Estrogen receptor beta signals to inhibition of cardiac fibrosis.

Abstract:

:Cardiac fibrosis evolves from the cardiac hypertrophic state. In this respect, estrogen and estrogen receptor beta (ERβ) inhibit the effects of cardiac hypertrophic peptides that also stimulate fibrosis. Here we determine details of the anti-fibrotic functions of ERβ. In acutely isolated rat cardiac fibroblasts. E2 or a specific ERβ agonist (βLGND2) blocked angiotensin II (AngII) signaling to fibrosis. This resulted from ERβ activating protein kinase A and AMP kinase, inhibiting both AngII de-phosphorylation of RhoA and the resulting stimulation of Rho kinase. Inhibition of Rho kinase from ERβ signaling resulted in marked decrease of TGFβ expression, connective tissue growth factor production and function, matrix metalloproteinases 2 and 9 expression and activity, and the conversion of fibroblasts to myofibroblasts. Production of collagens I and III were also significantly decreased. Several important aspects were corroborated in-vivo from βLGND2-treated mice that underwent AngII-induced cardiac hypertrophy. Thus, ERβ in cardiac fibroblasts prevents key aspects of cardiac fibrosis development.

journal_name

Mol Cell Endocrinol

authors

Pedram A,Razandi M,Narayanan R,Levin ER

doi

10.1016/j.mce.2016.06.018

subject

Has Abstract

pub_date

2016-10-15 00:00:00

pages

57-68

eissn

0303-7207

issn

1872-8057

pii

S0303-7207(16)30220-9

journal_volume

434

pub_type

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