抗肝腹水浸膏对鼠肝纤维化及利尿作用的影响

目的：探讨抗肝腹水浸膏对鼠肝纤维化及利尿作用的影响。方法：1、小鼠肝纤维化试验：采用20%、40%CCL4橄榄油溶液,皮下注射制作小鼠肝纤维化模型后给药6周,测定肝组织羟脯氨酸含量,计算肝、脾指数并作病理检查。2、大鼠利尿试验：取试验前禁食18hr大鼠,分别给大鼠灌胃用生理盐水配成的药液50ml/kg,立即放入代谢笼内,收集6hr内的尿液,观察其大鼠6hr的排尿量与灌胃量比值。结果：1、小鼠肝纤维化试验：工艺Ⅱ高、工艺Ⅲ中、Ⅲ高和马洛替酯组小鼠肝组织羟脯氨酸含量下降,工艺Ⅱ中、工艺Ⅲ低和马洛替酯组小鼠血清透明质酸含量下降,工艺Ⅰ高、工艺Ⅱ中和马洛替酯组小鼠脾指数下降,与模型组比较,差异有显著和非常显著性意义（p〈0.05和p〈0.01）。病理组织学检查：工艺Ⅰ低、工艺Ⅱ高、工艺Ⅲ低、Ⅲ中、复方鳖甲软肝片组和马洛替酯片组炎症细胞逐渐减少,点状坏死和变性范围缩小,有明显的纤维组织增生,与模型组比较,差异有显著和非常显著性意义（p〈0.05和p〈0.01）。2、从大鼠利尿试验：工艺Ⅰ低、工艺Ⅱ低、工艺Ⅲ低、呋塞米片组在2hr的排尿量和排尿量与灌胃量比值均增;工艺Ⅰ低、工艺Ⅱ低、呋塞米片组在6hr的排尿量和排尿量与灌胃量比值均增加,但与空白组比较,均无显著性差异（p〉0.05）。结论：工艺Ⅱ供试品,具有抑制肝纤维化及利尿作用。     

Hibiscus sabdariffa extract lowers blood pressure and improves endothelial function

Polyphenols from Hibiscus sabdariffa calices were administered to patients with metabolic syndrome (125 mg/kg/day for 4 wk, n = 31) and spontaneously hypertensive rats (125 or 60 mg/kg in a single dose or daily for 1 wk, n = 8 for each experimental group). The H. sabdariffa extract improved metabolism, displayed potent anti‐inflammatory and antioxidant activities, and significantly reduced blood pressure in both humans and rats. Diuresis and inhibition of the angiotensin I‐converting enzyme were found to be less important mechanisms than those related to the antioxidant, anti‐inflammatory, and endothelium‐dependent effects to explain the beneficial actions. Notably, polyphenols induced a favorable endothelial response that should be considered in the management of metabolic cardiovascular risks.