jaivik amaratva

jaivik amaratva (kadhikadhi jaiv-nishchit mrutyudar mhanoon sambodhale jaate) hii eka ashee sthitee aahe jyamadhye vruddhatvamule vruddhatvamule mrutyuche praman sthir kinwa qamee hott jaate, asha prakare teey kalkramanusar vayapasoon vegale hote. kahee prushthavanshiy pranyansah vividh ekkoshikiy aanee bahukoshikiy prajati, ektar tyanchya sampoorn astitvamadhye kinwa dirghkal jagalyanantar hii sthitee prapt karatat. jaivikdrushtya amar prani ajunahi vruddhatvavyatirikt itar sadhananmule maroo shakato, jase qee dukhapat, vish, rog, shikar, upalabdh sansadhanancha abhav kinwa paryavaranatil badal.
amaratvachya yaa vyakhyela 'vruddhatvachya jivashastrachya pustika' madhye aavhan denyat aale aahe, kaaran kalanukramik vayache karya mhanoon mrutyudaratil vaadh atyant vruddhapkalat nagany asoo shakate, yaa kalpanela usheera-jeevan mrutyuche pathar asey mhanatat. vruddhapkalat mrutyuche praman vadhane thambavu shakate, parantu bahutek prakarananmadhye teey praman samanyatah khoop jaast asate.
jivashastradnyandvare hii sandnya asha peshinche varnan karnyasathi dekhil vaparali jaate jyaa kitee vela vibhajit houu shakatat yavar gavat-fika maryadechya adheen naheet.
peshi resha.
jivashastradnyanni 'amar' haah shabd asha peshinna soochit karnyasathi nivadala jeey gavatavarchya maryadechya adheen naheet, jyaa binduvar peshi dii. aine. aii. nuksan kinwa lahan telomearsmule vibhajit houu shakat naheet. leonard heflickchya siddhantapurvi, alexes caralne serve samanya sharirik peshi amar asalyache gruheet dharale.
amaratva' haah shabd pratham karkarogachya peshinna lagoo karnyat aala hota, jeey telomere-vadhanare enzyme telomeres vyakt karatat aanee tyadvare apoptosis-i talhtat.eae. antahkoshikiy yantranemule peshincha mrutyu hoto. sarvat samanyapane vaparlya jaanarya peshi reshanmadhye helah aanee jurkat aahet, jyaa donhi karkarogachya peshi resha amar aahet. 1951 madhye henrietta pasoon ghetalelya grivechya karkarogachya namunyatoon helah peshi tayar jhalya. yaa peshi polio lus tayar karane, laingik samprerak steroid sanshodhan aanee peshi chayapachay yasarkhya jaivik sanshodhanat mothya pramanat vaparlya gelya aahet aanee aajahi aahet. bhrun stame peshi aanee jantu peshi yanchehi amar mhanoon varnan kele gele aahe.
karkarogachya peshinchya amar peshi resha oncogeneschya preranadvare kinwa tumour suppressor janukanchya hanidware tayar kelya jaau shakatat. amaratva prerit karnyacha eka marg mhanje mothya tii-pratijanchya vishanu-madhyasthidvare preranadvare, samanyatah simean vishanu 40 (ess. vhee.-40) dware sadar kele jaate.
jeev.
pranyanche vruddhatva aanee dirghayushya yaa mahitisanchayanusar, atyalp vruddhatva asalelya pranyanchya yadeet (jangalatil andajit dirghayushyasaha) khaleel goshtincha samavesh aaheh
2018 madhye, varnamalechya malkichya calico yaa companysathi kaam punarjanan shastradnyanni 'eliph' yaa niyatkalikat eka pepper prakashit keela, jyamadhye heterocephalus glaberla (nange tantu under) vruddhatvamule mrutyucha dhoka vadhalela nahee yache sambhavya purave sadar kele aahet.
jivanu aanee kahee khameer.
anek ekkoshikiy jivanche vay vadhateh jasjasa kaal jaato tasatase teey adhik haloohaloo vibhajit hotat aanee shevati martat. vishamatapoorn vibhajan karnare jivanu aanee yeast dekhil vay vadhatat. tathapi, samamiteey vibhajan karnare jivanu aanee khameer heey aadarsh aadarsh paristhitit jaivikdrushtya amar asoo shakatat. yaa paristhitit, jevha peshi done dotter peshi tayar karnyasathi samamitiyaritya vibhajit hote, tevha peshi vibhajanachi prakriya peshila tarunyapurn sthiteet parat aanoo shakate. tathapi, jarr palakanni muleela asamanatene qamee kele tarr fakt mulgi tarunyapurn sthiteet parat yete-palak punarsthapit hott naheet aanee teey pudhe vruddha hotil aanee marnar aahet. ashach prakare mool peshi aanee jannendriye yanna 'amar' manale jaau shakate.
hydra.
hydras hii nideriya vanshavalinchi eka prajati aahe. serve sneederiyan punarutpadit karoo shakatat, jyamule tyanna dukhapatitun barey houu shakate aanee alaingik punarutpadan karata yete. hydraj heey sadhe, radial samamiti asalele godya panyatil prani aahet aanee tyat keval hatpayanmadhye poost-mytotic peshi (peshi jyaa punha kadhihi vibhajit honar naheet) asatat. serve jaal peshi satat vibhajit hotat. asey suchavale gele aahe qee hydras vruddhatvatun jaat naheet aanee tyamule teey jaivikdrushtya amar aahet. chaar varshanchya abhyasat, hydrachya 3 samoohanmadhye vayanusar mrutyudarat vaadh disun aalee nahee. heey prani 5 teey 10 divasant paripakv hotat heey lakshat gheta teey jaast kaal jagoo shakatat. tathapi, heey pudhe hydras telomiyarchi lambi kashee rakhu shakatat heey spasht karat nahee.
jelifish.
"turitopsis dohrani" kinwa "turitopsis nutricula" hii jelifishchi eka chhoti () prajati aahe jee laingik punarutpadanantar peshinna punha bharnyasathi transdiferentiationcha vapar karate. heey chakr anishchit kalasathi punha houu shakate, jyamule teey sambhavyatah jaivikdrushtya amar houu shakate. yaa jivanacha ugam caribean samudrat jhaala, parantu aata too jagbharat pasarla aahe. tulanatmak genomics abhyasanusar, tyachya punarujjivanachya pramukh aanvik yantrananmadhye dii. aine. aii. pratikruti aanee durusti aanee stame selche nutanikaran samavisht asalyache disate.
ashach prakarananmadhye hydrozone "laodicia undulata" aanee cyphosone "aurelia" ess. pii. 1. yancha samavesh hoto.
lobster.
sanshodhan asey suchavate qee lobster vayanusar mandavanar naheet, kamkuvat honar naheet kinwa prajanankshamta gamavanar naheet aanee june lobster lahan lobsterpeksha adhik supic asoo shakatat. tathapi, yamule teey paramparik arthane amar hott naheet, kaaran teey jitke mothe hotil titke (khalee tapshilvar) kavach khodoon maranyachi shakyata lakshaniyaritya jaast asate.
tyanche dirghayushya telomeres yaa enzymemule asoo shakate, jeey gunasutranchya tokanvar dii. aine. aii. anukramanchya dirgh punaravrutti vibhaganchi durusti karate, jyala telomeres mhanatat. telomeres bahutek prushthavanshiy pranyandvare garbh avasthemadhye vyakt keela jaato parantu samanyatah aayushyachya praudh avasthanmadhye anupasthit asato. tathapi, prushthavanshiy pranyanpeksha vegale, lobster bahutek uutindvare praudh mhanoon telomeres vyakt karatat, jeey tyanchya dirghayushyashi sambandhit asalyache suchavale gele aahe. lokpriy shraddhechya ulat, lobster amar nasatat. moltingdware lobster vadhatat jyasathi lakshaniy urja aavashyak asate aanee kavach jitke mothe asel titaki adhik urja aavashyak asate. akheris, katkasarichya darmyan thakvyamule lobster marel. junya lobster heey moulting thambavanyasathi dekhil olakhale jaatat, jyacha arth assa aahe qee kavach akheris kharab hoil, sankramit hoil kinwa tutel aanee teey martil. european lobsterche sarasari ayushya purushansathi 31 varshe aanee mahilansathi 54 varshe aahe.
samataliy chapate keede.
samataliy flatwormche laingik aanee alaingik punarutpadan karnare donhi prakar asatat. schmidteya mediterrania vanshavaril abhyas asey suchavatat qee heey samatoldhari punarutpadit hotana disatat (i.eae. barey karane) anishchit kalasathi, aanee alaingik vyaktinmadhye "varvar pahata amaryad [telomere] punarutpadak kshamata asate jee atyant pravardhaman pravardhaman praudh moolpeshinchya loksankhyedvare uttejit hote". "alaingik aanee laingik prani donhi telomiyarchya lambimadhye vayashi sambandhit ghat darshavtat; tathapi, alaingik prani telomiyarchi lambi sharirikaritya rakhanyas saksham asatat (i.eae. vikhandanadvare punarutpadanadarmyan kinwa vichchhedanadvare punarutpadan prerit kele jaate tevha), tarr laingik prani laingik punarutpadanadarmyan kinwa itar laingik prajatinpramanech bhrunjanan darmyan vistaradvare telomeres punarsanchayit karatat. alaingik aanee laingik asha donhi pranyanmadhye aadhalanari homeostatic telomeres kriya telomiyarchi lambi rakhanyasathi pureshi nahee, tarr punarjanan punarjanan alaingikanmadhil vadhaleli kriya telomiyarchi lambi nutanikaran karnyasathi pureshi aahe... "
laingik punarutpadan planeriasathih "vaiyaktik plenarianche ayushya 3 varshanparyant asoo shakate, bahudha neoblastchya vruddhatvachya peshinna satat badalanyachya kshamatemule". tarr alaingik punarutpadan planeriasathih "vikhandanadvare pratikruti pratikruti kahee plenarian prajatinchya clonal reshanmadhil vaiyaktik prani 15 varshanhun adhik kaal rakhale gele aahet".
granthasuchi.
 

