Effect of Bu Yang Huan Wu decoction(补阳还五汤) on basic fibroblast growth factor in rats with cerebral ischemia / 中国中西医结合急救杂志

ABSTRACT

Objective To investigate the effect of Bu Yang Huan Wu decoction(BYHWD,补阳还五汤) on the expression of basic fibroblast growth factor(bFGF) and its mechanism of anti-cerebral ischemia.Methods Eighty-five Sprague-Dawley rats(body weight 280-300 g) were randomly divided into five groups normal control group(n=5),sham-operated group,model group(n=20),traditional BYHWD group and ultra-fine powder BYHWD group.Then the latter four groups were further divided into four subgroups of 1,3,5 and 7 days(each n=5).The cerebral ischemic rat model was made by occluding the middle cerebral artery(MCA) with a thread.The traditional decoction and ultra-fine powder decoction groups were ingested with the liquid medicine of BYHWD after 2 hours of the operation(2 ml per rat per day,according to the surface area,it was equivalent to three times the dosage of 70 kg adult(human)).All groups were executed at the 1,3,5 and 7 days after the operation.At the same time there were 5 rats as the normal control group.The brain tissue was taken for the preparation of specimens.The distribution and expression difference of bFGF in the ischemic brain tissues of rats in different groups had been investigated with immuohistochemistry technique.The contents of bFGF in the brain tissue were detected with enzyme linked immunosorbent assay(ELISA).Results The positive expression of bFGF at peri-infarct area after ischemia increased obviously,but at central-infarct area there was less such positive expression.There was no expression at contra-lateral side to the ischemic area.The expression of bFGF immune positive cell increased at 1 day,peaked at 3 days,and returned to baseline at 7 days.The positive cells of bFGF in tradition decoction and ultra-fine powder decoction groups were obviously more than those in the model group at 3,5 and 7 days(all P