Effect of testosterone on the proliferation and collagen synthesis of cardiac fibroblasts induced by angiotensin II in neonatal rat.

Abstract:

:The objective is to explore the effect of testosterone on the proliferation and collagen synthesis of neonatal rat cardiac fibroblasts (CF) induced by Angiotensin II (Ang II) and the underlying mechanisms. Derived from neonatal rats, the CFs were divided into 4 groups: the control group, Ang II group, testosterone group, and testosterone + Ang II group in vitro. Cell cycle distribution, collagen counts, and phosphorylated extracellular signal-regulated kinase (ERK1/2) (p - ERK1/2) expression were assessed by flow cytometry, VG staining, and immunocytochemistry, respectively. The Ang II group had a much higher proportion of cells in the S-phase, higher collagen contents, and a higher p - ERK1/2 expression level than either the control or testosterone group. However, these factors were significantly reduced in the testosterone + Ang II group as compared to the Ang II group. In terms of cells in the S-phase and the collagen contents, there was not a significant difference between the testosterone group and the control. However, the protein expression of p-ERK1/2 was significantly increased in the testosterone group as compared to the control. Testosterone inhibits the proliferation and collagen synthesis of CF induced by Ang II. The underlying mechanism may involve the ERK1/2 signaling pathway.

journal_name

Bioengineered

journal_title

Bioengineered

authors

Yang X,Wang Y,Yan S,Sun L,Yang G,Li Y,Yu C

doi

10.1080/21655979.2016.1227141

subject

Has Abstract

pub_date

2017-01-02 00:00:00

pages

14-20

issue

1

eissn

2165-5979

issn

2165-5987

journal_volume

8

pub_type

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