双橘颗粒药效学实验研究

目的 探讨双橘颗粒对SD大鼠和家兔乳腺增生的作用.方法 1）大鼠乳腺增生模型：取SD大鼠肌肉注射苯甲酸雌二醇0.5 mg/kg制作乳腺增生模型后,连续给双橘颗粒30 d,末次给药后1 h腹主动脉采血5 ml测定血清雌二醇、孕酮的含量,并取乳腺组织进行病理组织学检查;2）大鼠足肿胀模型：取SD大鼠连续给药10 d,末次给药后1 h左足爪中部皮下注射10%鸡蛋清0.1 ml,然后于0.5、1、2、4、6 h测量同一部位大鼠足肿胀度;3）家兔乳腺增生模型：取未孕雌性家兔,肌肉注射苯甲酸雌二醇0.2 mg/kg,每天1次,连续25 d,随后肌肉注射黄体酮1 mg/kg,每天1次,连续5 d;从造模第5天起,双橘颗粒组和乳增宁片组灌胃相应浓度药液连续给药30 d,末次给药后1 h,心脏采血5 ml,测血清雌二醇、孕酮含量.另取第2对完整的乳房,进行病理组织学检查.结果 1）SD大鼠注射雌激素后,乳房明显肿胀,乳头明显增高等现象.双橘颗粒各剂量组皆能降低乳头高度,与模型组比较,差异具有显著性（P〈0.05）;与空白对照组比较,乳腺增生模型组动物血清雌二醇含量明显升高,孕酮含量明显降低.双橘颗粒10.0、3.0 g/kg剂量组能降低血清雌二醇含量,与模型组比较,有显著性意义（P〈0.05）,双橘颗粒各剂量组小叶缩小,腺泡数减少,腺泡腔和腺导管腔扩张不明显,分泌物减少,与模型组比较,有显著性意义（P〈0.05）.2）SD大鼠足肿胀模型与空白对照组比较,模型组动物注射鸡蛋清后0.5、1、2、4、6 h,其左足注射部位肿胀明显,在0.5、1 h达到高峰,其后肿胀变轻,但至6 h仍未消退.双橘颗粒各剂量组有减轻足肿胀的作用,但1.0g/kg剂量组作用较弱,10.0、3.0 g/kg剂量组作用较明显,其各时间段足肿胀度与模型组比较,差异具有显著性或非常显著性意义（P〈0.05或0.01）.3）家兔乳腺增生模型血清性激素水平与空白对照组比较,乳腺增生模型组动物血清雌二醇含量明显升高,孕酮含量明显降低.双橘颗粒5.0、1.5、0.5 g/kg剂量组能降低血清雌二醇含量,升高血清中孕酮,与模型组比较,差异具有显著性意义（P〈0.05）.对乳腺组织增生病理改变均有明显的改善作用.结论 双橘颗粒对实验性大鼠及家兔乳腺增生具有较好的防治作用.

The Treatment of Shuangju Particles on Hyperplasia of Mammary Gland in Rat and Rabbit

Objective To observe the therapeutic effects of Shuangju Particles on experimental hyperplasia of mammary glands in rat and rabbit. Method The model of mammary gland hyperplasia was established by injection of estradiol benzoatics in this experiment, To observe the treatment of shuangju particles on mammary gland hyperplasia in rat and rabbit. Result The Shuangju particles can inhibit mammary enlargement caused by estrogen, reduce the level of E2 in serum of rats and rabbit with mammary gland hyperplasia, increase the content of progesterone, reduce the number of lobular, acinar, the cell proliferative layer and the degree of mammary duct expansion. Meanwhile, the experiment of egg white induced foot swelling showed that it also has significant anti-inflammatory effect. Conclusion Shuangju Particles has preventive and therapeutic effects on experimental hyperplasia of mammary glands in rats and rabbit,and it may be used to treat disease of mammary gland hyperplasia in clinical.