Possible mechanism on changes of left-ventricular function in elderly isolated systolic hypertension
10.3760/cma.j.issn.0254-9026.2012.09.004
- VernacularTitle:老年单纯收缩期高血压患者左心功能变化的可能机制
- Author:
Xia LI
;
Youdong HU
;
Yan GUO
- Publication Type:Journal Article
- Keywords:
Hypertension;
Ventricular function,left;
C-reactive protein;
Toll-like receptor 2;
Antigens,CD34
- From:
Chinese Journal of Geriatrics
2012;31(9):753-757
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the relationship of left-ventricular function change with circulation levels of CD34+ cells,toll like receptor 2 (TLR2),TLR4 and high sensitivity C-reactive protein (hs-CRP)in elderly isolated systolic hypertension.Methods According to New York Heart Association (NYHA)class,left ventricular ejection fraction (LVEF) and systolic blood pressure (SBP),the healthy subjects and the patients were divided into 5 groups:control 30 cases,class Ⅰ 25 cases,class Ⅱ 29 cases,class Ⅲ 24 cases and class Ⅳ 20 cases.The expressions of circulating CD34 + cells,TLR2 and TLR4 in the patients and healthy subjects were measured by flow cytometry.The level of hs CRP was measured by nephelometry immunoassay.Results In class Ⅳ versus class Ⅰ,the levels of LVEF[(26.4±2.1)％vs.(40.5±3.6)％]and CD346 [(0.5±0.2) × 109 vs.(2.5±0.4) ×109 /L]were decreased,while SBP[(211.1±8.4)mm Hg vs.(151.1±5.9)mm Hg],TLR2 [(8.0±1.0) vs.(3.2±1.1)MFI],TLR4 [(6.4±1.3)MFT vs.(2.4±1.1)MFI]and hs-CRP [(14.7±0.3)mg/L vs.(4.9±0.6)mg/L]were increased (all P＜0.05).Conclusions The lower levels of CD34+ cells,higher TLR2,TLR4 and hs CRP levels are correlated with increasing SBP,decreasing LVEF and higher NYHA class.
