Mechanisms of Structural Vascular Changes in Genetic Hypertension: Analyses on Cultured Vascular Smooth Muscle Cells from Spontaneously Hypertensive Rats-Reference-Cited by-同舟云学术

Mechanisms of Structural Vascular Changes in Genetic Hypertension: Analyses on Cultured Vascular Smooth Muscle Cells from Spontaneously Hypertensive Rats

Published:1981-12-01 Issue:s7 Volume:61 Page:121s-123s
ISSN:0144-9664
Container-title:Clinical Science
language:en
Short-container-title:

Author:

Yamori Yukio¹²,Igawa Takehiro¹²,Kanbe Toshimi¹²,Kihara Masahiro¹²,Nara Yasuo¹²,Horie Ryoichi¹²

Affiliation:

1. Department of Pathology, Shimane Medical University, Izumo, Japan

2. Japan Stroke Prevention Center, Izumo, Japan

Abstract

1. The basic mechanism underlying the structural vascular changes occurring in hypertension was studied in cultured aortic smooth muscle cells (SMC) obtained by an explant method from spontaneously hypertensive rats (SHR) and stroke-prone SHR (SHRSP) and compared with that in normotensive Wistar—Kyoto (WKY) rats. 2. The growth rate of SMC from SHR and SHRSP at the age of 2.5–11 months was greater than that of SMC from WKY rats even after repeated passages. 3. [3H]Thymidine and [14C]leucine incorporation, and ornithine decarboxylase (ODC) activity of SMC were increased in SHR and SHRSP in comparison with WKY rats. 4. The application of isoprenaline but not noradrenaline to the culture media increased ODC activity acutely in SMC from WKY rats and this increase was blocked by propranolol. 5. These results indicate that SMC from SHR and SHRSP are more prone to proliferate than those from WKY rats and that a β-adrenergic neurohumoral mechanism accelerates SMC growth independently of blood pressure.

Publisher

Portland Press Ltd.

Subject

Ocean Engineering

Link

https://portlandpress.com/clinsci/article-pdf/61/s7/121s/876763/cs061121s.pdf

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