Effects of omapatrilat on endothelin-1-induced proliferation and synthesis of cardiac fibroblasts.
- Author:
Ya-ping ZHENG
1
;
Jiang XU
;
Yan-feng ZHAO
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Cell Proliferation; drug effects; Cells, Cultured; Collagen; biosynthesis; Endothelin-1; pharmacology; Fibroblasts; cytology; drug effects; Myocytes, Cardiac; cytology; drug effects; Nitric Oxide; metabolism; Pyridines; pharmacology; Rats; Rats, Sprague-Dawley; Thiazepines; pharmacology
- From: Chinese Journal of Applied Physiology 2007;23(4):415-418
- CountryChina
- Language:Chinese
-
Abstract:
AIMTo investigate the effects of omapatrilat (OMA) on endothelin-1-induced proliferation of cardiac fibroblasts (CFs).
METHODSIsolated and cultured CFs from neonatal Sprague-Dawley rats (SD) were randomly divided into 7 groups: (1) Control, (2) ET-1, (3) OMA, (4) ET-1 + OMA 10(-9) mol/L, (5) ET-1 + OMA 10(-8) mol/L, (6) ET-1 + OMA 10(-7) mol/L and (7) ET-1 + OMA 10(-6) mol/L. CFs were counted by MTT assay. Cell cycle distribution was determined with a flow cytometer (FCM). [3H]-Proline incorporation was evaluated by scintillation counting. Nitric oxide (NO) was measured by colorimetry.
RESULTS10(-7) mol/L ET-1 significantly increased A490 value and [3H]-Pro incorporation and decreased NO secretion compared with the control group (P < 0.01). 10(-9)-10(-6) mol/L OMA inhibited the effects of ET-1 on CFs in a concentration-dependent manner (P < 0.01 vs. ET-1). In the ET-1 group, the percentage of cells in the S phase was higher than control, which was inhibited by l0(-6) mol/L OMA (P < 0.01 vs. ET-1 and control).
CONCLUSIONOMA can restrain the proliferation and collagen synthesis of cardiac fibroblasts induced by endothelin-1, and this effect may be partially mediated by NO.
