ABSTRACT
[Objective] To investigate the effect of electroacupuncture (EA) of Neiguan (PC6) poinl on rnyocardial fibrosis and myocardial contents of collagen type Ⅰ and type Ⅲ in rats with pressure overload. [ Methods ] Rats were randomized to four groups: pseudo-operation group ( group A), model group ( group B) , EA group ( group C) and western medicine group (group D). Pressure-overloaded rat models were established by restriction of abdominal aortic artery. Left ventricular mass index (LVMI) and blood pressure (BP) in the four groups were observed; the plasma level of angiotensin Ⅱ (Ang Ⅱ ) was detected by radioimmunoassay and myocardial contents of collagen type Ⅰ and type Ⅲ by immunohistochemical staining method. [Results] BP, LVMI, expression levels of Ang If and collagen type Ⅰ and type Ⅲ were increased in group B as compared with those in group A ( P 0.05) . [Conclusion] EA of Neiguan point is effective in preventing and treating myocardial fibrosis induced by pressure overload.