菝葜提取物抑制良性前列腺增生活性部位筛选

Screening for the Bioactive Fraction of Smilax china L. on Inhibition of Experimentally Induced Benign Prostatic Hyperplasia

目的研究菝葜提取物对良性前列腺增生(BPH)的抑制作用,并筛选其活性部位。方法将雄性大鼠随机分为8组,每组6只,分别为假手术组、模型对照组、石油醚组、乙酸乙酯组、正丁醇组、水部位组、大孔树脂部位组、总提取物组。除假手术组外,其他各组均采用丙酸睾酮诱导去势大鼠BPH模型,并分别灌胃给予菝葜各提取部位,连续3周。末次给药后分离血清,检测前列腺酸性磷酸酶(PACP)含量,称取前列腺质量并进行病理学检查,评价菝葜各提取部位抑制BPH活性。结果菝葜各提取部位对大鼠BPH均有一定抑制作用,其中正丁醇部位、水部位和大孔树脂部位能显著抑制大鼠前列腺增生。与模型对照组比较,正丁醇组、水部位组及大孔树脂部位组前列腺指数分别降低了52.80%,50.93%及67.70%,血清PACP含量均显著降低。病理学检查发现,前列腺组织形态均有明显改善。综合各检测指标,菝葜大孔树脂部位抑制BPH效果最佳。结论菝葜提取物对模型大鼠BPH有一定抑制作用,其中大孔树脂部位效果最好,提示其可能为抑制BPH的活性部位。

Objective To study the effect of extracts of Smilax china L. on inhibition the experimentally induced benign prostatic hyperplasia （ BPH） , and screen the effective fraction. Methods The BPH model was built on the castrated rats by subcutaneous injection of testosterone propionate. Male rats were randomly divided into eight groups （ n=6 ）：sham operation, model control, petroleum ether fraction, acetic ether fraction, n-butyl alcohol fraction, water fraction, macroporous resin fraction （ FMR） , and total extracts group. The rats were treated with testosterone propionate by subcutaneous injection for consecutive 3 weeks. Meanwhile, rats were orally administrated with the six extract fractions of S. china L. After the last administration, serum was separated for the determination of prostatic acid phosphatase （ PACP ） , prostate was weighed and histopathological examination was carried out to evaluate the inhibitory effect of S. china L. against BPH. Results All of the six fractions from S. china L. could inhibit BPH, and the n-butanol fraction, water fraction and FMR showed better inhibitory effect, which significantly decreased the prostatic index by 52. 80%, 50. 93% and 67. 70%, respectively, remarkably reduced serum PACP, and notably improved the prostate gland morphology compared with the model group. Among the three fractions, FMR showed the strongest effect against BPH. Conclusion S. china L. ameliorates the experimentally prostatic hyperplasia, and FMR showes the best effect, which might be the bioactive components against BPH.