Control of renin secretion from adrenal gland in transgenic Ren-2 and normal rats.
In Ren-2 rats, plasma active renin and prorenin increase following binephrectomy (BNx) related to increasing plasma potassium. Adrenal is the source of the increasing prorenin but active renin comes mainly from thymus and gut. Trophic influences other than potassium were tested in the present work. Angiotensin did not influence the post-BNx increases in plasma active or prorenin but suppressed resting plasma prorenin from non-adrenal, non-renal sources virtually to zero. ACTH and histamine had no discernible effects. Hexamethonium decreased by 50% the post BNx increase in prorenin but not active renin. In Sprague-Dawley and spontaneously hypertensive rats, low levels of active renin secretion were detected from adrenal but no prorenin. Thus, in anesthetized Ren-2 rats, secreted prorenin is from two sources, i.e. extrarenal and extra-adrenal sites readily suppressible with angiotensin and the adrenal that is partly suppressible by autonomic blockage. This may assist in identifying the origin of extra-renal prorenin secreted in man.
Rong
P
P
Department of Physiology, The University of Melbourne, Vic. 3010, Parkville, Australia.
Wilkinson-Berka
J L
JL
Skinner
S L
SL
D000311:Adrenal Glands / Q000187:drug effects / Q000378:metabolism*; D000324:Adrenocorticotropic Hormone / Q000494:pharmacology; D000804:Angiotensin II / Q000494:pharmacology; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000494:pharmacology; D000818:Animals; D030801:Animals, Genetically Modified; D000959:Antihypertensive Agents / Q000494:pharmacology; D004195:Disease Models, Animal; D004656:Enalapril / Q000494:pharmacology; D004792:Enzyme Precursors / Q000235:genetics / Q000378:metabolism*; D005260:Female; D005730:Ganglionic Blockers / Q000494:pharmacology; D018628:Gene Dosage; D018738:Hexamethonium / Q000494:pharmacology; D006632:Histamine / Q000494:pharmacology; D006973:Hypertension / Q000097:blood / Q000235:genetics / Q000378:metabolism; D009392:Nephrectomy; D051381:Rats; D011918:Rats, Inbred SHR; D017207:Rats, Sprague-Dawley; D012083:Renin / Q000097:blood / Q000235:genetics / Q000378:metabolism*; D014662:Vasoconstrictor Agents / Q000494:pharmacology
D000806:Angiotensin-Converting Enzyme Inhibitors; D000959:Antihypertensive Agents; D004792:Enzyme Precursors; D005730:Ganglionic Blockers; D014662:Vasoconstrictor Agents; D000804:Angiotensin II; D018738:Hexamethonium; D004656:Enalapril; D006632:Histamine; D000324:Adrenocorticotropic Hormone; D012083:Renin