[Vasopressin-stimulated adenyl cyclase activity in the ascending portions of rabbit kidney nephron loops].
The adenylate-cyclase activity contained in the successive segments of the loop of Henle was measured using single tubular pieces isolated by microdissection. Vasopressin (10 (-6) M) had no significant effect on either the pars recta or the thin descending limb; whereas, it stimulated the enzyme contained in the thin ascending limb (8.9 fold as a mean value) and that contained in the medullary portion of the large ascending limb (14.7 fold).
D000262:Adenylyl Cyclases / Q000378:metabolism*; D000818:Animals; D004789:Enzyme Activation; D007668:Kidney / Q000378:metabolism*; D009399:Nephrons / Q000033:anatomy & histology / Q000378:metabolism*; D011817:Rabbits; D014667:Vasopressins / Q000494:pharmacology*; D014882:Water-Electrolyte Balance / Q000187:drug effects
D014667:Vasopressins; D000262:Adenylyl Cyclases
Présence d'une adenyl-cyclase stimulée par la vasopressine dans la branche ascendante des anses des néphrons du rein de Lapin