Novel central action of des-Asp-angiotensin I

Intracerebroventricularly administered des-Asp-angiotensin I, when prevented from degradation by prior administration of captopril, attenuated dose-dependently the central pressor actions of angiotensin II and angiotensin III in the spontaneously hypertensive (SHR) and Wistar Kyoto (WKY) rats. This...

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Veröffentlicht in:European journal of pharmacology 1994-05, Vol.257 (1), p.R1-R3
Hauptverfasser: Sim, M.K., Radhakrishnan, R.
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Radhakrishnan, R.
description Intracerebroventricularly administered des-Asp-angiotensin I, when prevented from degradation by prior administration of captopril, attenuated dose-dependently the central pressor actions of angiotensin II and angiotensin III in the spontaneously hypertensive (SHR) and Wistar Kyoto (WKY) rats. This finding is the first demonstration of an intrinsic action of des-Asp-angiotensin I and, together with earlier finding of its increased production in the hypothalamus of the spontaneously hypertensive rat, may support the suggestion that the nonapeptide is a functional angiotensin that regulates the pressor action of angiotensin II and angiotensin III in the brain.
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subjects Angiotensin I - analogs & derivatives
Angiotensin I - pharmacology
Angiotensin II - antagonists & inhibitors
Angiotensin III
Angiotensin III - antagonists & inhibitors
Animals
Biological and medical sciences
Blood Pressure - drug effects
Captopril - pharmacology
des-Asp-Angiotensin I
Dose-Response Relationship, Drug
Drug Interactions
Endocrine kidney. Renin-angiotensin-aldosterone system
Fundamental and applied biological sciences. Psychology
Hypothalamus - drug effects
Injections, Intraventricular
Male
Rats
Rats, Inbred SHR
Rats, Inbred WKY
Spontaneously hypertensive rat (SHR)
Vertebrates: endocrinology
title Novel central action of des-Asp-angiotensin I
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