<prompt> Effect of GL P-1-Increased aldosterone secretion by adrenalIncreased PTH secretionIncreased insulin secretion from beta-cells of pancreasIncreased testosterone secretion from Ley dig cells  <response>: Ans. is c i.e., Increased insulin secretion from beta-cells of pancreas o Recently, attention has been focused on glucagon - like polypeptide 1 7-36 GLP-1 as an additional gut factor for insulin secretion and GLP-1 7-36 is more potent tnsulinotropic hormone.Regulation of insulin secretiono Factors affecting insulin secretion are : -Simulating insulin secretion :- Glucose; Mannose; Amino acids arginine, leucine; Intestinal hormones G1P, Gastrin. Secretin, CCK, GLP -1; b-keto acids; Parasympethetic stimulation acetylcholine; cAMP; b-adrenergic stimulation; theophylline; Sulfonylureas; and certain endocrine hormones like growth hormone. Glucagon and glucocorticoids.Inhibiting insulin secretion : - Somatostatin; 2-deoxyglucose; mannoheptulose; a-adrenergic stimulation, b-adrenergic inhibitors; galanin; Diazoxide; Thiazide diuretics; K- depletion; Phenytoin; Alloxan; microtubule inhibitors; and insulin itself. 