摘要
目的探讨选择性α1a肾上腺素受体拮抗剂西洛多辛对睾酮引起大鼠良性前列腺增生(BPH)的影响及机制研究。方法大鼠随机分成三组:对照组、睾酮诱导BPH组和西洛多辛+BPH组。对照组不做任何处理,BPH组、西洛多辛组BPH模型由睾酮[20mg/(kg·d)]皮下连续注射4周诱导。西洛多辛组大鼠同时连续口服西洛多辛[100μg/(kg·d)]4周,4周后处死所有大鼠,检测各组大鼠血生化指标,前列腺体积、重量和病理变化,表皮生长因子受体(EGFR)和B细胞慢性淋巴细胞白血病/淋巴瘤2(BCL-2)蛋白表达。结果4周后,各组大鼠体重均增加,但差异无统计学意义(P〉0.05)。BPH组血糖水平低于对照组,各组间谷草转氨酶和谷丙转氨酶水平差异均无统计学意义(P〉0.05)。与BPH组相比,西洛多辛治疗组前列腺体积和重量显著减小[前列腺体积:(0.93±0.14)cm^3 VS(1.75±0.15)cm^3,P〈0.01;前列腺重量:(0.97±O.06)gVS(1.30±0.05)g,P〈0.01]。西洛多辛降低前列腺组织中EGFR和BCL-2表达(P〈0.05)。结论西洛多辛可能通过减少EGFR和BCL-2的表达抑制BPH。
Objective To investigate the effect of silodosin, a selective alphalaadrenoceptor antagonist on a rat model of testosterone-induced benign prostatic hyperplasia (BPH) and its mechanisms. Methods The rats were divided into three groups: control, testosterone-induced BPH, and silodosin + BPH groups. BPH was induced by subcutaneous injection of testosterone [20 mg/( kg · d) ] for 4 weeks. Meanwhile silodosin + BPH groups rats were administered silodosin 4 weeks [ 100 μg,/( kg · d)]. After 4 weeks, all animals were sacrificed to examine the blood biochemical profiles, prostate volume, weight, histopathological changes, and epidermal growth factor receptor (EGFR) and B-cell chronic lymphocytic leu- kemia (CLL)/lymphoma 2 (BCL-2) protein expressions. Results Each group showed an increase compared to their initial body weight; however, differences in weight change between groups were not significant ( P 〉 0.05). The BPH group displayed lower glucose levels than the control group. The serum levels of glutamic oxaloacetic transaminase (GOT) and glutamic pyruvic transaminase (Girl') were not significantly different among groups ( P 〉 0.05). The group treated with silodosin showed significantly lesser prostate size and weight than the testosterone-induced BPH group [ volume: (0. 93 ± 0. 14)cm^3 vs (1.75 ± 0. 15 ) cm^3,P 〈0.01; weight: (0.97 ±0.06)g vs (1.30±0.05)g, P 〈0.01]. In addition, silodosin decreased the expressions of EGFR and BCL-2 in prostate tissues ( P 〈 0. 05). Conclusions These results suggest that silodosin suppress the development of BPH by inhibiting the expressions of EGFR and BCL-2.
出处
《中国医师杂志》
CAS
2016年第2期199-202,207,共5页
Journal of Chinese Physician
基金
山西省基础研究项目(2015021178)