text:
|Publication number
|Publication type
|Application number
|Publication date
|Sep 2, 2008
|Filing date
|Mar 26, 2002
|Priority date
|Mar 26, 2001
|Fee status
|Also published as
|Publication number
|S. Brian Wilson, Glenn Dranoff, Silke Gillessen
|Original Assignee
|Dana-Farber Cancer Institute, Inc.
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (30), Non-Patent Citations (66), Referenced by (6), Classifications (53), Legal Events (5)
|External Links: USPTO, USPTO Assignment, Espacenet
This Utility Application is based on Provisional Application 60/278,837, filed Mar. 26, 2001, the content of which is relied upon and incorporated herein by reference in its entirety, and benefit priority under 35 U.S.C. �119(e) is hereby claimed.
This invention was supported by National Institutes of Health Grants R01 A145051, K11 DK02345, and R01 CA74886 and the government of the United States has certain rights thereto.
The present invention is directed to a method of attenuating and/or inhibiting a variety of reactions such as rashes caused by irritants. Preferably, the attenuated reaction is an immune response associated with CD1d activation.
The skin represents the body's initial line of defense against the environment. The body is continually exposed to a barrage of molecules, many of which can cause an adverse reaction upon contact. These reactions can follow a spectrum from causing a dramatic and detrimental effect on an individual to skin discoloration and blotching.
The reactions include typical allergic dermatitis, including contact dermatitis and atopic dermatitis, as well as irritant dermatitis.
Contact dermatitis is an inflammation of the skin, which occurs when the skin comes in contact with substances that the skin is sensitive or allergic to. The reaction usually appears within 24-48 hours after exposure to the allergen. Common symptoms include redness, itching and swelling. Sometimes blistering and weeping of the skin also develop. The clinical symptoms of contact dermatitis can include acute eczema accompanied by erythema, edema, papula, vesicle, erosion, and itching. Repeated exposure to an irritant can lead to the development of eczema accompanying lichenification and infiltration. Allergic contact dermatitis can appear after initial or prolonged exposure to an irritant. Contact dermatitis includes irritant dermatitis, phototoxic dermatitis, allergic dermatitis, photoallergic dermatitis, contact urticaria, systemic contact-type dermatitis and the like.
A wide range of agents can cause allergic contact dermatitis including for example, metals (e.g. nickel, chromium, cobalt), fragrances, chemicals, cosmetics, textiles, pesticides, plastics, and pollen (see, for example, R. J. G. Rycroft et al. "Textbook of Contact Dermatitis").
Therapeutic agents such as drugs may also cause allergic contact dermatitis, particularly when administered transdermally. It is well known that many drugs, e.g., topical ointments, including some currently marketed in the United States (e.g. clonidine) sensitize the skin when used.
Skin sensitization may be produced not only by transdermally delivered drugs, but also by a non-sensitizing drug combined with skin sensitizing permeation enhancers, or a combination of a sensitizing drug and a sensitizing permeation enhancer. Penetration of these sensitizing agents into the skin and the resulting adverse reaction of the skin may persist well beyond the time that the transdermal patch is removed from the skin. The reaction of the skin may be a source of discomfort and a clinical complication in patients suffering from such a reaction.
Atopic dermatitis is developed by exposure to various antigens, since an individual has an atopic disposition which is hypersensitivity against a certain substance. The clinical symptoms include marked itching, skin hypertrophy, infiltration, lichenification and the like.
Irritant dermatitis can occur when too much of a substance is used on the skin or when the skin is sensitive to a certain substance. Susceptibility can include a genetic component. Skin-irritating agents are substances (e.g. soap) that cause an immediate and generally localized adverse response. The response is typically in the form of redness and/or inflammation and generally does not extend beyond the immediate area of contact. Symptoms that are commonly seen include redness, scaling, and the skin looking irritated and sore.
Psoriasis is a skin condition associated with hyper-proliferation of skin cells and immunologic involvement. Psoriasis is a common, idiopathic chronic skin disease characterized by inflamed, scaling, skin lesions containing infiltrates of neutrophils, lymphocytes, and monocytes. Psoriasis manifests in many forms, including cutaneous, mucosal, ungual, and even psoriatic rheumatism. The most effective treatment in the control of localized psoriasis for most patients is the use of topical corticosteroids and topical coal-tar preparations. With certain patients who have generalized psoriasis, it has been necessary to use a variety of systemic chemotherapeutic agents, especially methotrexate.
Certain irritants may cause both allergic and non-allergic contact dermatitis. For example, latex. Latex refers to a type of plastic made from the milky sap of the rubber tree, and contains many proteins which can cause allergic reactions in sensitive individuals. Symptoms can range from watery eyes, hives, rash, swelling, wheezing and in severe cases, anaphylaxis. These responses can occur when latex items touch the skin; the mucous membranes (including the mouth, bladder, genitals, or rectum), and open wounds or bloodstream (especially during surgery). Anybody can develop latex sensitivity. People at increased risk for developing latex allergy include workers with ongoing latex contact (like health care workers), persons with many environmental allergies (hay fever), and those with spina bifida. Latex is found in a wide array of common products, including, for example: gloves, balloons, band-aids, tourniquets, bandages, catheters, rubber bands, IV, other tubing (ex. stethoscopes), art supplies, pacifiers, bottle nipples, diapers, condoms/diaphragms, elastic, chewing gum, carpeting, hand grips of bicycles and motorcycles, shoe soles, auto tires, swimming goggles and equipment.
The more common reaction to latex products is not allergic, but rather, irritant contact dermatitis, which can cause dry, itchy, irritated areas on the skin, usually the hands. Skin reactions include a rash that usually begins 24 to 48 hours after contact. It may progress to oozing blisters or spread away from area touched by latex. Latex allergy (immediate hypersensitivity) is a more serious reaction. Certain proteins in latex cause an allergic reaction. The amount of exposure needed to cause symptoms is not known. Very low levels of exposure can trigger allergic reactions in some people, while having no affect to most people. Reactions usually begin within minutes of exposure to latex, but can occur hours later and have a variety of symptoms. Mild reactions to latex usually cause skin redness, hives, or itching. More severe reactions can cause respiratory or breathing symptoms such as runny nose, sneezing, itchy eyes, scratchy throat, and asthma (trouble breathing, coughing, and wheezing).
Individuals can also develop allergic dermatitis and/or irritant dermatitis in response to insects and plants and shrubbery. For example, certain plants such as poison ivy excrete chemicals that upon contact can cause adverse reactions in humans. These reactions may particularly occur during gardening or nature walks.
Many animals can also suffer from a variety of skin irritations and inflammations generally known as dermatitis. For example, all animals can develop contact dermatitis caused by flea, mosquito, or other insect bites, allergies, external stimulation such as from prickly plants, and for other reasons. The condition has been notoriously difficult to treat. Veterinarians occasionally resort to injections of various medicines in an attempt to alleviate the symptoms and cure the dermatitis.
Presently known therapies for treating or preventing reactions associated with such irritants are inadequate. For example, steroidal agents and antihistamine agents have been used as therapeutic agents for contact dermatitis, and these and a part of the so-called anti-allergic agents have been used for atopic dermatitis. The most widely prescribed drugs to treat dermatologic disease are corticosteroids, also known as glucocorticosteroids or glucocorticoids. Approximately 50% of prescriptions written by dermatologists are for topical corticosteroids. However, these drugs can cause adverse reactions and/or are not fully effective. Systemic corticosteroids are often required in some severe dermatologic diseases but topical treatment is preferred in most responsive cases because it causes fewer systemic adverse effects.
Individual topical corticosteroid preparations vary in anti-inflammatory potency and clinical efficacy.
Though some steroids, particularly mid- to high-potency steroids, are efficacious in chronic dermatoses, long term use of steroids is associated with serious local side effects. These include skin atrophy (thinning, telangiectasia, striae) and a prompt rebound flare when the steroid is stopped. Treatment of large areas of skin and use of occlusive dressings can also increase the potential for adverse effects. This is especially the case in children.
Examples of anti-histamine agents include diphenhydramine hydrochloride, mequitazine, promethazine hydrochloride, and chlorpheniramine maleate anti-histamines have been used mainly to reduce itchiness. Anti-allergic agents include tranilast, ketotifen fumarate, oxatomide, and azelastine hydrochloride. In general, conventional so-called antiallergic agents are either ineffective or fail to show satisfactory therapeutic effects on contact dermatitis and atopic dermatitis.
Accordingly, there is a need for a treatment for skin reactions including allergic dermatitis (contact dermatitis and atopic dermatitis), as well as irritant dermatitis.
The pathophysiologic mechanisms involved in the above-described skin disorders and the evolution of such inflammatory processes are poorly understood. There are numerous skin conditions characterized by increased T cell activation and abnormal antigen presentation in the dermis and epidermis. Thus, there has been speculation that skin cells are important in the generation of a cutaneous inflammatory response (Kupper, "Immune and Inflammatory Processes in Cutaneous Tissues", J. Clin. Invest., 86, pp. 1783-89 (1990)).
CD1d-restricted NK T cells are among the immune system cells found in the skin. The in vivo functions of CD1d-restricted NK T cells are not fully known. They are involved in the IgG response to GPI-anchored proteins of various parasites, contribute to the IL-12-mediated rejection of tumors, and appear to regulate some autoimmune disorders and clearance of certain infections through the production of cytokines. Many of these functions have been observed by using lipid ligands that bind CD1d and activate NK T cells. For example, α-gal-cer.
In humans, the direct cellular targets for their immunomodulatory function(s) have remained enigmatic.
We have now discovered that one can attenuate and block CD1d activation. This can be done by administering compositions that attenuate CD1d-restricted NK T cell responses. Such compositions include compounds that act as antagonists by binding CD1d and inhibiting activation of CD1d-restricted NK T cells, compounds that block CD1d-specific receptors on NK T cells, and decoys, mimics and the like. Compositions include pharmaceutical and cosmetic compositions.
One preferred group of compositions include phospholipids that bind CD1d without activating NK T cells. Preferred phospholipids include 1,2-Dipalmitoyl-sn-Glycero-3-Phosphoethanolamine (DPPE) and 1,2-Dipalmitoyl-sn-Glycero-3-Phosphoethanolamine-N-[Poly(ethylene glycol) 2000] (DPPE-PEG).
Another preferred group of compositions includes glycolipid antagonists that bind CD1d without activating NK T cells. Preferred glycolipids include ceramide, αMan Cer, and βGal Cer.
Another preferred group of compositions includes phosphatidyl inositol.
This method of attenuating CD1d activation can be used for treatment of conditions associated with activation of CD1d-restricted NK T cells. Preferred conditions include skin disorders due to hyperactive CD1d-restricted T cell responses and other disorders associated with ongoing CD1d-restricted immune responses.
Such CD1d associated skin disorders include contact dermatitis and further eczematous dermatitises, atopical dermatitis, seborrheic dermatitis, psoriasis, Lichen planus, Pemphigus, bullous Pemphigoid, epidermolysis bullosa, urticaria, angioedemas, vasculitides, erythemas, cutaneous eosinphilias, Lupus erythematosus, and Alopecia areata.
A preferred embodiment of the invention is directed to the treatment of contact hypersensitivity.
Another embodiment of the invention provides hypoallergenic cosmetic products.
Another embodiment of the invention is directed to compositions that can be used prophylactically to prevent a reaction before one encounters the irritant. For example, a composition to use before weeding.
One preferred embodiment of the invention provides preventing or treating skin sensitization produced by topical administration of therapeutic drugs.
Other embodiments of the invention provide systemic administration of compositions to attenuate ongoing CD1d-restricted immune responses. Systemic therapy can be used in any individual for which activation of NKT cells would be adverse. Systemic conditions can include individuals with autoimmune disease such as lupus. It can also be used in women at high risk for spontaneously aborting pregnancies.
In one embodiment of the invention, a locally administrable topical pharmaceutical or cosmetic composition is provided for the attenuation or treatment of skin conditions associated with CD1d-restricted immune responses. The locally administrable topical pharmaceutical composition includes a topical carrier.
The present invention is directed to a method of inhibiting CD1d activation. The method comprises administering a composition containing a moiety that blocks CD1d activation.
Compositions of the invention are useful for the attenuation of CD1d-restricted immune responses, including treatment of skin disorders due to hyperactive immune responses (e.g., contact hypersensitivity), for systemic administration to attenuate ongoing immune responses, and to provide hypoallergenic cosmetic products including pharmaceutical, cosmetic, and skin care compositions. Preferably, these compositions are in a form intended for topical administration.
We have discovered that certain antagonists bind CD1d and inhibit activation of NK T cells. Consequently, by exposing CD1d-expressing cells to a CD1d-specific antagonist, one can attenuate immune responses by specific inhibition of CD1d-restricted events. Antagonists of the present invention include any molecules that inhibit activation of CD1d-restricted NK T cells. Thus, one can treat subjects suffering from an activated CD1d associated disorder such as a skin disorder by administering an effective amount of CD1d specific antagonist.
Such compounds include antagonists that bind CD1d and inhibit NK T cell activation, antagonists that block CD1d-specific receptors such as on NK T cells, decoys that prevent CD1d binding to the CD1d specific receptor, and the like.
Experiments in human models have revealed that CD1d-restricted CD161+T cells specifically target myeloid dendritic (DC1) cells. DC1 dendritic cells are integral to the genesis of Th1 immune responses. Accordingly, their susceptibility to lysis by CD1d-restricted CD161+T cells may be part of a negative feedback loop in cell-mediated immune responses.
We tested dendritic cell function in CD1d null and wild type mice. The CD1d mull mice had impaired priming responses in mixed lymphocyte reactions, to tumor vaccinations, and in skin contact hypersensitivity (see
Accordingly, one can readily determine whether a compound inhibits activation of CD1d by looking at activation of CD1d-restricted NK T cells in vitro using standard assays such as described herein. For example, the proliferation of NK T cells is indicative of their activation by binding to CD1d-expressing cells. Proliferation can be measured, for example, by determining the incorporation of [3H] thymidine into Vα14 NK T cells (Kawano et al., Science 278:1626-29 (1997)). Other in vitro assays include the induction of cytokine production.
CD1d-specific antagonists include any antagonist that binds CD1d and inhibits activation of NK T cells. The binding of an antagonist to CD1d can be determined in vitro using standard assays. For example, surface plasmon resonance (Naidenko et al., J. Exp. Med. 190:1069-79 (1999)). Molecules known to bind CD1d include antibodies, phospholipids and glycolipids, including highly glycosylated sphingolipids (gangliosides) (Kawano et al., Science 278: 1626-9 (1997); Naidenko et al., J. Exp. Med. 190:1069-79 (1999); Briken et al., Sem. Immunol. 12: 517-25 (2000); Kronenberg et al., Proc. Natl. Acad. Sci. USA 98: 2950-52 (2001)).
Phospholipids that bind CD1d without activating NK T cells include 1,2-Dipalmitoyl-sn-Glycero-3-Phosphoethanolamine (DPPE) (Naidenko et al., 1999). The phospholipid may be coupled to a conjugate, such as other lipids coupled to a carrier such as biotin or a poly(alkylene oxide), for example polyethylene glycol (PEG). Polymeric substances such as dextran, polyvinyl pyrrolidones, polysaccharides, starches, polyvinyl alcohols, polyacrvyl amides or other similar polymers can be used. Polyethylene glycol (PEG) as the poly(alkylene oxide) is preferred. The poly(alkylene oxides) can include monomethoxy polyethylene glycol, polypropylene glycol, block copolymers of polyethylene glycol and polypropylene glycol and the like. The polymers can also be distally capped with C1-4 alkyls instead of monomethoxy groups.
Other preferred phospholipids include phosphotidyl inositol.
Glycolipids that bind to CD1d share a common motif consisting of a hydrophobic portion composed of a branched or dual alkyl chain moiety with a covalently linked hydrophilic cap formed by a polar or charged group of the lipid of associated carbohydrates (Briken et al., 2000). The prototypical glycolipid antigen presented by CD1d is -galactosylceramide (Kawano et al., 1997). Thus, D1d antagonists can include glycolipids such as monoglycosylated ceramides and diglycosylated ceramides (Kawano et al., 1997).
Examples of monoglycosylated ceramides and diglycosylated ceramides which bind CD1d but do not activate NK T cells can include ceramides with inner sugar groups at the β-anomer position (such as Galα1-4Glcβ1-1′Cer), an axial configuration of the 2-hydroxyl group (such as α-ManCer), derivatives lacking the 3- and 4-hydroxyl groups on the phytosphingosine of α-GalCer (such as 3,4-deoxy α-GalCer), and ceramides with fatty acyl chain with less than C26, and a sphingosine base less than C18. Glycolipid antagonists can also be coupled to a conjugate such as biotin or a poly(alkylene oxide), for example PEG.
Other CD1d glycolipid antagonists include highly glycosylated sphingolipids, also known as gangliosides. Ganglioside antagonists include GM1 and GD1a (Naidenko et al., 1997). The antagonists can be coupled to a conjugate such as a biotin or poly (alkylene oxide).
Preferred examples of CD1d-specific lipid antagonists include but are not limited to: DPPE-PEG, phosphatidyl inositol, ceramide, α-ManCer, β-GalCer, Galα1-4Glcβ1-1′Cer, and 13,4-deoxy α-GalCer, GM1, and GD1a.
Other antagonists can include antibodies that specifically bind to CD1d and in doing so prevent CD1d from binding to a CD1d specific receptor. Single chain antibodies and humanized monoclonal antibodies are preferred. Alternatively, one can use molecules that block the CD1d-specific receptor. For example, a molecule. Alternatively, one can modify the lipids that activate CD1d binding by capping the end that bind to CD1d (Kawano et al., Science 278: 1626-9 (1997); Naidenko et al., J. Exp. Med. 190:1069-79 (1999); Briken et al., Sem. Immunol. 12: 517-25 (2000); Kronenberg et al., Proc. Natl. Acad. Sci. USA 98: 2950-52 (2001)).
One can also use decoys that mimic CD1d receptors so that the CD1d molecule does not bind to the receptor.
CD1d blocking molecules are presently preferred.
Compositions of the invention should be physiologically stable at therapeutically effective concentrations. Physiological stable compounds are compounds that do not break down or otherwise become ineffective upon introduction to a patient prior to having a desired effect. Compounds are structurally resistant to catabolism, and thus, physiologically stable, or coupled by electrostatic or covalent bonds to specific reagents to increase physiological stability. Such reagents include amino acids such as arginine, glycine, alanine, asparagine, glutamine, histidine or lysine, nucleic acids including nucleosides or nucleotides, or substituents such as carbohydrates, saccharides and polysaccharides, lipids, fatty acids, proteins, or protein fragments. Useful coupling partners include, for example, glycol such as polyethylene glycol, glucose, glycerol, glycerin and other related substances.
Preferably, the compositions are not substantially toxic, myelotoxic, mutagenic or teratogenic at required dosages. Although side effects may occur, preferably the benefits achieved from their use outweigh disadvantages attributable to adverse side effects.
Compositions of the present invention can be used to prevent or treat any condition associated with activation of CD1d-restricted NK T cells, in which attenuation of CD1d activation, such as attenuation of the CD1d-restricted NK T cell response, would be desirable. Preferred embodiments of the invention include topical administration to treat skin disorders due to hyperactive immune responses (e.g., contact hypersensitivity) and systemic administration. Prophylactic use to attenuate immune responses. For example, to avoid reactions to certain plants such as poison ivy, poison oak, etc. when you are going to be in an area where exposure to such a substance is likely, for example, if you are going to be in the woods, gardening, etc.
Systemic administration is preferred in any individual for which activation of NKT cells would be adverse.
Certain women have a problem with spontaneous abortion which appears to be associated with high levels of CD1d. These individuals could use the present compositions before trying to conceive, preferably using systemic administration.
Certain individuals with autoimmune diseases have complications associated in part with CD1d activation. These compositions can be used with such individuals.
One problem with allergic or irritant caused itching is that the scratching can in fact result in further irritation that causes rashes and irritation long after the initial stimulus is gone. This is a particular problem with non-human animals. These compositions can be used to attenuate, treat or present such conditions. Another preferred embodiment includes the composition in hypoallergenic cosmetic products.
In one embodiment of the invention, a locally administrable topical pharmaceutical composition is provided for the prevention or treatment of skin conditions associated with CD1d-restricted T cell responses. Skin conditions include, but are not limited to, contact dermatitis and further eczematous dermatitises, atopical dermatitis, seborrheic dermatitis, Lichen planus, Pemphigus, bullous Pemphigoid, epidermolysis bullosa, urticaria, angioedemas, vasculitides, erythemas, cutaneous eosinphilias, Lupus erythematosus, and Alopecia areata.
A preferred skin condition is contact dermatitis. Contact dermatitis can be caused by a variety of irritants. The most widely known natural allergens which are capable of sensitizing and causing contact dermatitis in many people are antigenic plants of the genus Rhus, such as poison ivy, poison oak, and poison sumac. Other widely known skin irritants are commercial products such as insecticides containing Pyrethrum or Rotenone, dye intermediates such as aniline, nitro compounds, anthracene, and derivatives thereof, dyes such as paraphenylenediamine and aniline black, photo developers such as hydroquinone and para-amido-phenol, antioxidants such as hexamethylene tetramine, and synthetic and natural resins such as wood rosin and phenol formaldehyde, and detergents and constituents of rubber and latex gloves
Other agents that cause contact dermatitis include, for example, metals (e.g. nickel, chromium, cobalt, including exposure during body piercing), latex, fragrances, chemicals, cosmetics, textiles, pesticides, plastics, pollen, and the like. Therapeutic agents such as drugs may also cause allergic contact dermatitis, particularly when administered topically or transdermally. Agents that cause non-allergic contact dermatitis include skin-irritating agents such as water, skin cleansers, industrial cleaning agents, alkalis, acids, oils, organic solvents, oxidizing agents, reducing agents, plant matter, animal matter, combinations thereof, and the like.
Another preferred skin condition is psoriasis. Psoriasis is a skin condition associated with hyper-proliferation of skin cells and immunologic involvement. Psoriasis is a common, idiopathic chronic skin disease characterized by inflamed, scaling, skin lesions containing infiltrates of neutrophils, lymphocytes, and monocytes. The compositions and methods of the present invention can be used to treat any form of psoriasis, including cutaneous, mucosal, ungual, and even psoriatic rheumatism. Compositions and methods of the present invention can be used to treat localized and generalized psoriasis.
One preferred embodiment of the invention provides prophylactic treatment to minimize skin sensitization produced by topical administration of therapeutic drugs. In another embodiment, the composition can be administered with the therapeutic drug or cosmetic. In still another embodiment, the composition is used for treatment after the reaction has occurred.
Another embodiment of the invention provides systemic administration of compositions to attenuate ongoing CD1d-restricted immune responses. This embodiment is preferable for any individual for whom activation of NKT cells would be adverse. Systemic conditions can include certain high risk spontaneously aborting pregnancies. It can also be used with autoimmune diseases such as lupus.
In another embodiment of the invention, a locally administrable topical cosmetic composition is provided, for example to provide hypoallergenic products.
The compositions of the present invention include those suitable for topical and systemic administration including oral, rectal, intravaginal, nasal, ophthalmic or parenteral administration, all of which may be used as routes of administration using the materials of the present invention. A preferred route of administration is topical. The topical composition may be in the form of a pharmaceutical but it does not have to be. For example, it can be a cosmetic.
In one embodiment of the invention, the locally administrable topical composition is provided for the prevention or treatment of skin conditions associated with CD1d-restricted immune responses. The locally administrable topical composition includes a topical carrier.
The topical carrier, as noted above, is one which is generally suited to topical drug administration and includes any such materials known in the art. The topical carrier is selected so as to provide the composition in the desired form, e.g., as a liquid, lotion, cream, paste, gel, powder, or ointment, and may be comprised of a material of either naturally occurring or synthetic origin. It is essential that the selected carrier not adversely affect the active agent or other components of the topical formulation. Examples of suitable topical carriers for use herein include water, alcohols and other nontoxic organic solvents, glycerin, mineral oil, silicone, petroleum jelly, lanolin, fatty acids, vegetable oils, parabens, waxes, and the like. The composition of the invention may also be administered in the form of a shampoo, in which case conventional components of such a formulation are included as well, e.g., surfactants, conditioners, viscosity modifying agents, humectants, and the like.
Particularly preferred formulations herein are colorless, odorless oinstments, lotions, creams and gels.
Ointments are semisolid preparations which are typically based on petrolatum or other petroleum derivatives. The specific ointment base to be used, as will be appreciated by those skilled in the art, is one that will provide for optimum drug delivery, and, preferably, will provide for other desired characteristics as well, e.g., emolliency. As with other carriers or vehicles, an ointment base should be inert, stable, nonirritating and nonsensitizing. As explained in Remington: The Science and Practice of Pharmacy, 19th Ed. (Easton, Pa.: Mack Publishing Co., 1995), at pages 1399-1404, ointment bases may be grouped in four classes: oleaginous bases; emulsifiable bases; emulsion bases; and water-soluble bases. Oleaginous ointment bases include, for example, vegetable oils, fats obtained from animals, and semisolid hydrocarbons obtained from petroleum. Emulsifiable ointment bases, also known as absorbent ointment bases, contain little or no water and include, for example, hydroxystearin sulfate, anhydrous lanolin and hydrophilic petrolatum. Emulsion ointment bases are either water-in-oil (W/O) emulsions or oil-in-water (OW) emulsions, and include, for example, cetyl alcohol, glyceryl monostearate, lanolin and stearic acid. Preferred water-soluble ointment bases are prepared from polyethylene glycols of varying molecular weight (Remington: The Science and Practice of Pharmacy).
Lotions are preparations to be applied to the skin surface without friction, and are typically liquid or semiliquid preparations in which solid particles, including the active agent, are present in a water or alcohol base. Lotions are usually suspensions of solids, and preferably, for the present purpose, comprise a liquid oily emulsion of the oil-in-water type. Lotions are preferred formulations herein for treating large body areas, because of the ease of applying a more fluid composition. It is generally necessary that the insoluble matter in a lotion be finely divided. Lotions will typically contain suspending agents to produce better dispersions as well as compounds useful for localizing and holding the active agent in contact with the skin, e.g., methylcellulose or sodium carboxymethyl-cellulose, or the like. A particularly preferred lotion formulation for use in conjunction with the present invention contains propylene glycol mixed with a hydrophilic petrolatum such as that which may be obtained under the trademark Aquaphor.RTM. from Beiersdorf, Inc. (Norwalk, Conn.).
Creams containing the selected agent are, as known in the art, viscous liquid or semisolid emulsions, either oil-in-water or water-in-oil. Cream bases are water-washable, and contain an oil phase, an emulsifier and an aqueous phase. The oil phase, also sometimes called the "internal" phase, is generally comprised of petrolatum and a fatty alcohol such as cetyl or stearyl alcohol; the aqueous phase usually, although not necessarily, exceeds the oil phase in volume, and generally contains a humectant. The emulsifier in a cream formulation, as explained in Remington, supra, is generally a nonionic, anionic, cationic or amphoteric surfactant.
Gels formulations are preferred for application to the scalp. As will be appreciated by those working in the field of topical drug formulation, gels are semisolid, suspension-type systems. Single-phase gels contain organic macromolecules distributed substantially uniformly throughout the carrier liquid, which is typically aqueous, but also, preferably, contain an alcohol and, optionally, an oil.
Shampoos may be formulated with the standard shampoo components, i.e., cleansing agents, thickening agents, and preservatives with the cleansing agent representing the primary ingredient, typically an anionic surfactant or a mixture of an anionic and an amphoteric surfactant.
Various additives, known to those skilled in the art, may be included in the topical formulations of the invention. For example, solvents may be used to solubilize certain drug substances. Other optional additives include skin permeation enhancers, opacifiers, anti-oxidants, gelling agents, thickening agents, stabilizers, and the like. Other agents may also be added, such as antimicrobial agents, antifungal agents, antibiotics and anti-inflammatory agents such as steroids.
In the preferred topical formulations of the invention, the active agent is present in an amount which is generally less than 10% by weight of the total composition, preferably less than about 1% by weight, and most preferably less than about 0.1% by weight.
The topical compositions of the invention may also be delivered to the skin using a time-release mechanism. For example, "transdermal"-type patches, wherein the CD1d activation-blocking composition is contained within a laminated structure that serves as a drug delivery device to be affixed to the skin. In such a structure, the drug composition is contained in a layer, or "reservoir," underlying an upper backing layer. The laminated structure may contain a single reservoir, or it may contain multiple reservoirs. In one embodiment, the reservoir comprises a polymeric matrix of a pharmaceutically acceptable contact adhesive material that serves to affix the system to the skin during drug delivery. Examples of suitable skin contact adhesive materials include, but are not limited to, polyethylenes, polysiloxanes, polyisobutylenes, polyacrylates, polyurethanes, and the like. The particular polymeric adhesive selected will depend on the particular drug, vehicle, etc., i.e., the adhesive must be compatible with all components of the drug-containing composition. In an alternative embodiment, the drug-containing reservoir and skin contact adhesive are present as separate and distinct layers, with the adhesive underlying the reservoir which, in this case, may be either a polymeric matrix as described above, or it may be a liquid or hydrogel reservoir, or may take some other form.
The backing layer in these laminates, which serves as the upper surface of the device, functions as the primary structural element of the laminated structure and provides the device with much of its flexibility. The material selected for the backing material should be selected so that it is substantially impermeable to the CD1d activation-blocking composition and to any other components of the composition, thus preventing loss of any components through the upper surface of the device. The backing layer may be either occlusive or nonocclusive, depending on whether it is desired that the skin become hydrated during drug delivery. The backing is preferably made of a sheet or film of a preferably flexible elastomeric material. Examples of polymers that are suitable for the backing layer include polyethylene, polypropylene, polyesters, and the like.
During storage and prior to use, the laminated structure preferably includes a release liner. Immediately prior to use, this layer is removed from the device to expose the basal surface thereof, either the drug reservoir or a separate contact adhesive layer, so that the system may be affixed to the skin. The release liner should be made from a drug/vehicle impermeable material.
Such devices may be fabricated using conventional techniques, known in the art, for example by casting a fluid admixture of adhesive, drug and vehicle onto the backing layer, followed by lamination of the release liner. Similarly, the adhesive mixture may be cast onto the release liner, followed by lamination of the backing layer. Alternatively, the drug reservoir may be prepared in the absence of drug or excipient, and then loaded by "soaking" in a drug/vehicle mixture.
As with the topical formulations of the invention, CD1d activation blocking composition contained within the reservoirs of these laminated system may contain a number of components. In some cases, the blocking composition may be delivered "neat," i.e., in the absence of additional liquid. In most cases, however, the composition will be dissolved, dispersed or suspended in a suitable pharmaceutically acceptable vehicle, typically a solvent or gel. Other components which may be present include preservatives, stabilizers, surfactants, and the like.
Preferably, the topical formulations and the laminated delivery systems also contain a skin permeation enhancer. A skin permeation enhancer can be co-administered. Suitable enhancers are well know in the art and include, for example, dimethylsulfoxide (DMSO), dimethyl formamide (DMF), N,N-dimethylacetamide (DMA), decylmethylsulfoxide (C10 MSO), C2-C6 alkanediols, and the 1-substituted azacycloheptan-2-ones, particularly 1-n-dodecylcyclazacycloheptan-2-one (available under the trademark Azone.RTM. from Whitby Research Incorporated, Richmond, Va.), alcohols, and the like.
The ointments, pastes, creams and gels also may contain excipients, such as animal and vegetable fats, oils, waxes, paraffins, starch, tragacanth, cellulose derivatives, polyethylene glycols, silicones, bentonites, silicic acid, talc and zinc oxide, or mixtures thereof. Powders and sprays also can contain excipients such as lactose, talc, silicic acid, aluminum hydroxide, calcium silicates and polyamide powder, or mixtures of these substances. Sprays can additionally contain customary propellants, such as chlorofluorohydrocarbons and volatile unsubstituted hydrocarbons, such as butane and propane.
The topical compositions according to this invention may also include one or more preservatives or bacteriostatic agents, e.g., methyl hydroxybenzoate, propyl hydroxybenzoate, chlorocresol, benzalkonium chlorides, and the like. The topical compositions also can contain other active ingredients such as antimicrobial agents, particularly antibiotics, anesthetics, analgesics, and antipruritic agents.
Antimicrobial agents that can be used in the topical administration of the present invention are those compatible with skin and soluble in solvents. In addition, antimicrobial agents are active against a broad spectrum of microorganisms, including but are not limited to, gram positive and gram negative bacteria, yeast, and mold. Examples of the antimicrobial agents include, but are not limited to, triclosan (5-chloro-2-(2,4-dichlorophenoxy) phenol which is also known as Irgasan.TM. DP 300 manufactured by Ciba-Geigy Corporation), hexetidine (5-amino-1,3-bis(2-ethylhexyl)-5-methyl-hexahydropyrimidine), chlorhexidine salts (salts of N,N″-Bis(4-chlorophenyl)-3,12-diimino-2,4,11,14-tetraazatetradecanediimidi amide), 2-bromo-2-nitropropane-1,3-diol, hexyresorcinol, benzalkonium chloride, cetylpyridinium chloride, alkylbenzyldimethylammonium chlorides, iodine, phenol derivatives, povidone-iodine (polyvinylpyrrolidinone-iodine), parabens, hydantoins (2,4-imidazolidinedione), hydantoins derivatives (derivatives of 2,4-imidazolidinedione), phenoxyethanol, cis isomer of 1-(3-chloroallyl)-3,5,6-triaza-1-azoniaadamantane chloride (quarternium-15 which is also known as Dowicil 200 manufactured by Dow Chemical Company), diazolidinyl urea, benzethonium chloride, methylbenzethonium chloride, and mixtures thereof. Examples of hyndantoin derivatives include, but are not limited to, dimethylol-5,5-dimethylhydantoin (glydant). Preferably, examples of the antimicrobial agents include triclosan, cis isomer of 1-(3-clhoroallyl)-3,5,6-triaza-1-azoniaadamantane chloride (quarternium-15), hyndantoins, hyndantoin derivatives such as dimethylol-5,5-dimethylhydantoin (glydant), and mixtures thereof.
The percentage of the antimicrobial agents in the composition is about 0.01 wt. % to about 10 wt. %, and preferably, about 0.01 wt. % to about 2 wt. %.
In one embodiment such as where a latex condom or diaphragm is to be used, the CD1d activation block compositions can be included in ointments, foams, and creams that can be used during sex. For example, they can be administered preferably prior to or just after sexual contact such as intercourse. One preferred composition would be a vaginal foam, including a spermicide, containing one of the compounds.
The topical compositions and drug delivery systems of the invention can be used in the prevention or treatment of the skin conditions identified above. When used in a preventive (prophylactic) method, susceptible skin can be treated prior to exposure or just after exposure but any visible lesions on areas known to be susceptible to such lesions are observed. In treating skin conditions, it will be recognized by those skilled in the art that the optimal quantity and spacing of individual dosages will be determined by the nature and extent of the condition being treated, the form, route and site of administration, and the particular individual undergoing treatment, and that such optimums can be determined by conventional techniques. It will also be appreciated by one skilled in the art that the optimal dosing regimen, i.e., the number of doses can be ascertained using conventional course of treatment determination tests. Generally, a dosing regimen will involve administration of the selected topical formulation at least once daily, and preferably one to four times daily, until the symptoms have subsided.
Systemic administration of a composition may be by oral, parenteral, sublingual, rectal such as suppository or enteral administration, or by pulmonary absorption. Parenteral administration may be by intravenous injection, subcutaneous injection, intramuscular injection, intra-arterial injection, intrathecal injection, intra peritoneal injection or direct injection or other administration to one or more specific sites. When long term administration by injection is necessary, venous access devices such as medi-ports, in-dwelling catheters, or automatic pumping mechanisms are also preferred wherein direct and immediate access is provided to the arteries in and around the heart and other major organs and organ systems.
Compositions may also be administered to the nasal passages as a spray. Arteries of the nasal area provide a rapid and efficient access to the bloodstream and immediate access to the pulmonary system. Access to the gastrointestinal tract, which can also rapidly introduce substances to the blood stream, can be gained using oral enema, or injectable forms of administration. Compositions may be administered as a bolus injection or spray, or administered sequentially over time (episodically) such as every two, four, six or eight hours, every day (QD) or every other day (QOD), or over longer periods of time such as weeks to months. Compositions may also be administered in a timed-release fashion such as by using slow-release resins and other timed or delayed release materials and devices.
Where systemic administration is desired, orally active compositions are preferred as oral administration is a convenient and economical mode of drug delivery. Oral compositions may be poorly absorbed through the gastrointestinal lining. Compounds which are poorly absorbed tend to be highly polar. Preferably, such compositions are designed to reduce or eliminate their polarity. This can be accomplished by known means such as formulating the oral composition with a complimentary reagent which neutralizes its polarity, or by modifying the compound with a neutralizing chemical group. Preferably, the molecular structure is similarly modified to withstand very low pH conditions and resist the enzymes of the gastric mucosa such as by neutralizing an ionic group, by covalently bonding an ionic interaction, or by stabilizing or removing a disulfide bond or other relatively labile bond.
Treatments to the patient may be therapeutic or prophylactic. Therapeutic treatment involves administration of one or more compositions of the invention to a patient suffering from one or more symptoms of the disorder. Relief and even partial relief from one or more symptoms can correspond to an increased life span or simply an increased quality of life. Further, treatments that alleviate a pathological symptom can allow for other treatments to be administered.
The term "compatible", as used herein, means that the components of the compositions are capable of being commingled with the CD1d blocking agents of the present invention, and with each other, in a manner such that does not substantially impair the desired efficacy.
Doses of the pharmaceutical compositions of the invention will vary depending on the subject and upon the particular route of administration used. Dosages can range from 0.1 to 100,000 μg/kg per day, more preferably 1 to 10,000 μg/kg. By way of an example only, an overall dose range of from about, for example, 1 microgram to about 300 micrograms might be used for human use. This dose can be delivered at periodic intervals based upon the composition.
8-12 week old female C57B1/6 mice were purchased from Taconic Farms, Inc. (Germantown, N.Y.). The CD1d-null allele (generated in a 129�C57B1/6 founder (25) (26) was backcrossed 7 generations into the C57B1/6 strain. (15) Homozygous CD1d deficient mice were obtained from littermate pairings and used to generate heterozygote CD1d deficient and wild type controls. Breeding pairs of mice deficient for CD1d on the BALB/c background were purchased from Jackson Labs (Bar Harbor, Me.). The C57B1/6 and BALB/c J 281 null mice were established by specific deletion of the J 281 gene segment (27) (28). All mouse experiments were approved and conducted under IACUC guidelines.
Contact hapten, 4-ethoxymethylene-2-phenyl-2-phenyl-2-oxazolin-5-one (oxazolone) was purchased from SIGMA, GalCer [(2S, 3S, 4R)-1-O-(-D-galactopyranosyl)-2-(N-hexacosanoylamino)-1,3,4-octadecanetriol was kindly provided by Pharmaceutical Research Laboratories, Kirin Brewery, Gunma, Japan, and CD1d-binding antagonists Polyethylene glycol (PEG)2000 dipalmitoyl-L-phosphatidylethanolamine (DPPE-PEG) and (PEG)2000 ceramide were purchased from Northern Lipids, Inc.
Contact Hypersensitivity
Mice at least seven weeks of age were sensitised epicutaneously on day 0 with 70 μl of 4% 4-ethoxymethylene-2-phenyl-2-oxazolin-5-one (oxazolone, Sigma, St. Louis, Mo.) in acetone/olive oil (4/1) and challenged five days later on the right ear with 20 μl of 0.5% oxazolone or carrier only on the left ear. The hapten-specific increase in ear thickness at 24 hours was determined with a micrometer. For experiments using DPPE-PEG, 4% oxazolone in acetone/olive oil (4/1) solutions with or without DPPE-PEG (in dosages ranging from 5 mg/ml to 100 mg/ml) were applied. Finally, a mixture off 0.5% oxazolone and 50 mg/ml DPPE-PEG was used for the inhibition of oxazalone recall.
Analysis of invariant Vα14Jα281 TCR frequency. Total RNA was isolated from spleens of individual mice using TRIZOL (Gibro BRL, Grand Island, N.Y.) according to the manufacturer's recommendations. First-strand cDNA synthesis was performed using oligo(dT) as a primer for reverse transcription of 2 μg of total RNA in a 50 μl reaction mixture using MMLV-RT (Life Technologies, GIBCO-BRL, Gaithersgurg, Mass.). Quantitative analysis of Vα14Jα281 T cell frequency was done using multiplex RT-PCR by comparing the intensity of the TCR α-chain CDR3 band with the invariant INKT cell specific band, as previously described (29).
Treatment Protocols
Mice received a series of 5 intraperitoneal injections of either 2 μg of αManCer (2 μg i.p. diluted in a solution of phosphate buffered saline and 0.5% Tween-20 every other day, starting 3 days prior to skin sensitization and continuing through to re-challenge.
Statistical Analysis
Significant differences between groups were evaluated with a Mann-Whitney test, or where appropriate, a two tailed Student's t test. Mean differences were considered significant when p<0.05.
Contact hypersensitivity is ablated both in CD1d knock out and in iNKT cell-deficient Jα281 knock out mice. Mice were sensitized epicutaneously on day 0 with oxazolone and challenged six days later on the ear with oxazolone or carrier only, as described above. The hapten-specific increase in ear thickness at 24 hours was determined with a micrometer. (See
To examine the functional importance of CD1d restricted iNKT cells in CHS we measured the ability of iNKT cell-deficient mice to generate contact hypersensitivity to oxazolone. This reaction is a form of delayed-type hypersensitivity in which hapten-protein conjugates are presented by cutaneous dendritic cells, followed by their migration to regional lymph nodes, to hapten-specific CD4 and CD8 positive T lymphocytes (1)′(2)′(30)′(3). Upon secondary hapten challenge, sensitized T cells initiate a local inflammatory response. In this system, activation of iNKT cells by CD1d on skin DC is thought to be an important initiation step followed by the elaboration of cytokines such as IL-4 (10) (31). Interestingly, contact hypersensitivity to oxazolone was significantly impaired in INKT cell-deficient mice on both the C57B1/6 and Balb/c backgrounds (
Systemical administration of an inactive CD1d binding lipid, α-ManCer inhibits contact hypersensitivity to oxazolone. Since CD1d- or Jα281-null mice had impaired CSH responses, we examined whether activation or inhibition of iNKT cells with the protypic CD1d-dependent glycolipid agonist α-GalCer or antagonist α-ManCer, a glycolipid that is known to bind CD1d but fails to activate iNKT cells, would modulate CSH responses. Mice were treated with the α-GalCer or α-ManCer by i.p. injections administered prior to and during the sensitization phase with oxazolone. Pretreatment of mice with α-ManCer inhibited the CSH response by 50% when compared to the control group (
Topical DPPE-PEG (a CD1d-binding lipid) inhibits oxazolone-induced contact hypersensitivity (
Topical administration of iNKT antagonist lipids inhibited the generation of CHS. Increasing doses of DPPE-PEG inhibit oxazolone-induced hypersensitivity in a dose-dependent manner, as shown in
Inhibition of CSH by DPPE-PEG is strain independent (
CSH reactions were inhibited in mice deficient in iNKT cells directly confirming an important role for iNKT cells in CSH. Furthermore, CHS was specifically inhibited in those mice that were treated with CD1d-binding antagonists. Thus, blockade of the CD1d system could be used to treat ACD in an antigen- and MHC-independent fashion.
All references described herein are incorporated herein by reference.
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|U.S. Classification
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|International Classification
|Cooperative Classification
|European Classification
|Jun 26, 2008
Owner name: DANA-FARBER CANCER INSTITUTE, INC., MASSACHUSETTS
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text:
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subset: commoncrawl


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May 2016 M T W T F S S « May 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Category Archives: Random Thoughts
Checking In
No one can accuse the Hawks of ever being boring. Not even a month into their off-season and the Hawks created quite a stir when they released assistant coach Mike Haviland. Much to the surprise of just about everyone who … Continue reading
Posted in Random Thoughts 5 Comments
Let The Real Season Begin
After 82 games, after all the head-scratching, after all the jumps to conclusion in October, after all the calls for Stan Bowman and/or Joel Quenneville to be fired, after every core player was deemed trade able, the Blackhawks finished with … Continue reading
Posted in Random Thoughts 3 Comments
Dazed at the Deadline
The dreams of Derek Roy and Matt Carle came crashing down hard today. While there was some hope for the Hawks to make a big splash at the trade deadline, simply put, the market place didn't allow for it. Unless, … Continue reading
Posted in Random Thoughts 20 Comments
Blood In the Streets, The Town of Chicago
As we all search for some hidden reason as to why the Blackhawks have lost their last six games, the answer is actually pretty obvious. Nothing rips out a team's will to compete quite like a bad goal at a … Continue reading
Posted in Random Thoughts 29 Comments
Just A Lonely Thursday Night in Pittsburgh
After our hiatus, it only took one Blackhawk pre-season to get our juices flowing again. Actually, I could only stomach about 25 minutes of gameplay before the premiere of 'Parks and Recreation' got the best of my television, but nevertheless. … Continue reading
Posted in Random Thoughts 7 Comments


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Tony Award winner Ruben Santiago-Hudson, one of August Wilson's finest interpreters is at the helm of the Broadway premiere of Wilson's JITNEY at MTC's Samuel J. 720 more words
Tags » Jitney
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Uber and its New York riders dodged a bullet — for now, anyway — when the company struck a deal to let its local drivers organize. 28 more words
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Morris predicted Democrats will sustain large losses in the 2010 midterm elections due to public backlash from the bank and auto company bailouts, the president's $787 billion economic stimulus bill and the health care debate. 248 more words


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Olivia Wilde Gives The Best Advice Ever For Turning 30
Photo: Henry Lamb/Photowire/BEImages
If you haven't jumped on the Olivia Wilde fan bandwagon yet, now is definitely the time. The actress has been heating up the big screen for years now (and doing some seriously good deeds in her downtime), but thanks to her latest column for Glamour we're realizing that she's probably the coolest/funniest/most down-to-earth gal in Tinseltown. In honor of her upcoming 30th birthday (mazel!), Wilde penned a special Dos & Don'ts dedicated to making the transition from 20-something to serious adult.
Not only is she an amazing writer, but she dishes out some inspiring advice. Entering your '30s (dubbed by the star as the "Cut the Bullsh-t and Go Be Awesome" stage) can be a scary experience filled with lofty expectations, endless self-comparisons, and that nagging biological clock, but the Drinking Buddies star reminds us all why we need to start giving ourselves a break — and even major props. After all, as she points out, what's truly important is the kind of person we are, and not what we've managed to achieve by a certain age. "What do you want people to say at your funeral," she writes. "'Olivia may have cured HIV, but she ran over my cat and drove away laughing?' No, thanks! I'd rather be a good person who makes people happy than a dick who wins a Nobel by 32."
Wilde also waxes poetic on the topics of plastic surgery (don't do it!), travel (get out and explore while you still can), the pressure to pop out kids, and why this is the perfect time to try new things. Even if you've already passed the milestone (or turning 30 is way in your future), her essay is worth a read. Her life advice is some of the most heartfelt we've heard from an A-lister, and there's never a wrong time for a good laugh. (Glamour)
- Entertainment |
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Friday the 13th all started with one man: William Fowler. Fowler was your stereotypical superstitious 19th-century man. He was transfixed with the number 13. He attended P.S. 13, fought in 13 battles during the Civil War, built 13 structures in New York City, belonged to 13 secret clubs, and tried to coordinate all other ...
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May 13, 2016


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A suspect was arrested early Saturday and charged with murder in the fatal shooting of a student outside a dormitory at South Carolina State University, law enforcement officials said.
A suspect was arrested early Saturday and charged with murder in the fatal shooting of a student outside a dormitory at South Carolina State University, law enforcement officials said.
Justin Bernard Singleton, 19, of Charleston, was arrested just after midnight at the parking lot of an apartment complex in Orangeburg, where the campus is located, said Thom Berry, a public information officer with the South Carolina Law Enforcement Division.
He was charged with murder in the death of 20-year-old Brandon Robinson, according to a news release from law enforcement. Singleton was being held at the Orangeburg-Calhoun Regional Detention Center.
Robinson died Friday afternoon after he was shot outside Hugine Suites.
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Authorities initially said they were looking for four men who had left campus. Berry said there was no ongoing safety concern for the community but declined to say whether there was still an active manhunt.
"At this time, we believe we have the individual who fired the shot," Berry told The Associated Press early Saturday.
Authorities decided to lock down the campus so that whoever was responsible for the shooting could not return, University Police Chief Mernard Clarkson said Friday. The lockdown was lifted Friday evening.
Clarkson said police haven't figured out what led to the shooting.
The shooting shocked the entire campus, university President Thomas Elzey said. Grief counselors were being brought in to talk to students and staff.
"We, again, are extraordinarily sad about this. He was a very nice young man. And it hurts. It hurts us all," Elzey said.
Elzey said South Carolina Gov. Nikki Haley offered any help the school needed.
South Carolina State also was the site of a fatal shooting in 2011, when police said three men met on campus for a drug deal. A student, 22-year-old Jonathan Bailey, was killed.
Friday's fatal shooting happened three days after authorities said a Purdue University student shot and stabbed a fellow student to death in a classroom.
South Carolina State University is a historically black university with about 3,200 students in Orangeburg, about 40 miles south of Columbia.


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Palm shares drop on iTunes Pre block
Apple's recent move to block the Palm Pre syncing with Apple's iTunes music software has had a knock-on effect on Palm's shares.
Shares of Palm have dropped more than 3% on the back of the news after an Apple software update closed the "loophole" that allowed Pre-syncing.
"It also disables devices falsely pretending to be iPods, including the Palm Pre. As we've said before, newer versions of Apple's iTunes software may no longer provide syncing functionality with unsupported digital media players", Reuters quotes an Apple spokesperson as stating.
The aggressive move from Apple, seen as an attempt to protect its long-standing iTunes product from piggy-backing companies, means that Palm will no longer be able to advertise its phone as one that "synchronizes seamlessly with iTunes".
"Palm's media sync works with iTunes 8.2. If Apple chooses to disable media sync in iTunes, it will be a direct blow to their users who will be deprived of a seamless synchronization experience. However, people will have options. They can stay with the iTunes version that works to sync their music on their Pre, they can transfer the music via USB, and there are other third-party applications we can consider", Palm told Pocket-lint.
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- Tech then and now: Hilarious pictures of how gadgets have changed us for the worse


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White Nexus 5 leaked online in alleged press render
A press render of a white Google Nexus 5 has popped up online, indicating that another colour besides the black variant is in the works.
The Gadget Ox first noticed the press render published on Chinese website Weibo. The white smartphone pictured looks quite similar to the black version expected to debut soon with Android 4.4 KitKat.
Although a white Nexus 5 isn't too far-fetched, it's important to remember that anyone with some good Photoshop and Illustrator skills can dream up a "press" render. Still, it's interesting to enteratain the possibilities.
The upcoming Nexus 5 is expected to boast a 4.95-inch IPS TFT display, 2.3GHz Snapdragon 800 processor, 2GB of RAM, 8-megapixel rear-facing camera, 1.3-megapixel front-facing camera, 2,300mAh battery, support for wireless charging, NFC and LTE, 16GB or 32GB storage options and a price tag starting at $349 (£216).
As for when we can expect to see the white Nexus 5, the Nexus 4 was launched on 29 October 2012. It replaced the Galaxy Nexus, launched before that on 19 October 2011. Such a pattern indicates a late-October launch date for the Nexus 5.
Read: Nexus 5 release date, rumours and everything you need to know
Check out Pocket-lint's round-up for a complete rundown of all the rumours. Nothing has been confirmed nor made official though, so take everything you see or read with a grain of salt.
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- Motorola Moto X / Z (2016): What's the story so far?
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King Fahd International Airport (KFIA) is the third biggest international airport in the Kingdom of Saudi Arabia by passenger throughput. Located in the Eastern Province, it serves as the gateway to this region of 4 million people, offering good connections and frequencies to residente in Dammam, Dhahran Khobar, Qatif, Ras Tanura, and Jubail. KFIA has the world's largest airport land bank, covering 780km2. KFIA registered 7.56 million passengers and 118,000 tons of cargo in 2013.
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King Fahd International Airport (KFIA), Dammam, will welcome 7 new airlines over 7 months from November 2009 to May 2010. Felix Airways , Iran Air , and Jet Airways commenced operations to...
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Malibu Author's Festival
Laurie's short story, The Bag Lady
is in the Short Mystery Fiction Society's anthology
Flash and Bang
published by Untreed ReadsHERE
Click on the book to glimpse the German edition of
The Dark Before Dawn
Troubled homicide detective Gabriel McRay confronts his nemesis Victor Archwood at the killer's trial. A surprise twist during the proceedings sets a course for Archwood to claim his ultimate revenge on the detective, whom he blames for ruining his life. In a trap that combines Archwood's theatrical skills and criminal genius, Gabriel is forced to face his psychological demons once again and play a deadly cat and mouse game with a murderous opponent who will stop at nothing to achieve the detective's total destruction.
Upcoming Release!
author of the Gabriel McRay psychological suspense novels
official website
Upcoming Events!
April 30
Todes Schuldwins
the General Fiction Award
at the
2016 Amsterdam Book Festival
This just in:
The Mask of Midnightwins
theCLUE Award
for First Place In the Category of Suspense/Thriller Fiction
click here to learn more: Clue Award
Now Available !
California Writer's Club
Todes Schuld (The Dark Before Dawn) is Random House (Germany)
Editor's Best Picks "Book of the Month"
of the 2016 Amsterdam Book Festival
General Fiction category
The Dark Before Dawn and Deep into Dusk have been chosen to be featured selections and will be promoted to libraries and universities nationwide! Read about it in the
The Dark Before Dawn is chosen in Library Journal's
Best Books of 2015 self-e awards
And will be honored at the 2016 ALA!
Assistance League Annual Fundraiser