中药痛经巴布剂治疗痛经的实验研究
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摘要
中药痛经巴布剂治疗痛经的实验研究
     目的 通过中药痛经巴布剂主要药效学的研究,验证其治疗痛经的有效性;通过皮肤刺激试验,对中药痛经巴布剂的毒理作用有所认识,验证其安全性。
     方法 ①扭体试验:SD雌性大鼠随机分为凡士林组(空白对照组)、布洛芬乳膏组(阳性对照组)及痛经巴布剂组(试验药物组),各组大鼠腹腔注射苯甲酸雌二醇连续10天,第5天起分别用各组相应药物,连续6天。第11天用药40min后,腹腔注射催产素2u/只,记录30min内的扭体反应。②对痛经模型大鼠前列腺素E_2的影响:扭体试验观察完毕后,即刻眼眶取血,取血后立即取出大鼠子宫,称取子宫组织,匀浆,用放免法检测血浆及子宫组织中的PGE_2含量。③对正常家兔子宫平滑肌收缩的影响:雌性家兔腹腔注射苯甲酸雌二醇连续2天,第3天处死,制备离体子宫平滑肌标本,固定在盛有洛氏液的恒温浴皿中。标本平衡后依次加入月月舒冲剂,痛经巴布剂高、低剂量中药原液,用Medlab生物信号采集系统记录给药前后子宫平滑肌的收缩频率、幅度。④对催产素所致家兔子宫平滑肌剧烈收缩的影响(基本方法同③):将标本平衡并加入催产素,10min后,依次加入各试验药物。⑤皮肤刺激试验:白色家兔设完整皮肤组和破损皮肤组,采用左右侧自身对照,每日给药1次,连续7天,观察7天后及停药一周内的皮肤刺激情况。
     结果 ①痛经巴布剂能显著抑制痛经模型大鼠的扭体反
    
    应。②痛经模型大鼠痛经巴布剂组血浆及子宫组织中的PGEZ
    含量明显低于空白组,和布洛芬乳膏组相比较血浆中PGEZ含
    量有统计学差异而子宫组织中的PGEZ含量无统计学差异。③
    痛经巴布剂高、低剂量组能降低家兔正常离体子宫平滑肌的
    收缩频率和幅度,降低催产素所致子宫平滑肌剧烈收缩的幅
    度,低剂量组和用药前比有统计学差异,高剂量组和用药前
    及月月舒冲剂组比较均有统计学差异。④痛经巴布剂无明显
    皮肤刺激征。
     结论①通过动物实验证实中药痛经巴布剂能够治疗原
    发性痛经。②中药痛经巴布剂治疗原发性痛经的作用机制与
    其能抑制子宫平滑肌收缩(解痉作用)、降低PGEZ含量及镇
    痛作用有关。③皮肤刺激试验初步说明痛经巴布剂是一个安
    全的外用制剂。
Experimental Study on Anti-dysmenorrhea Effect of Tongjing Plaster
    Objective To study the anti-dysmenorrhea effect and the skin irritation of Tongjing Plaster, which could be a conclusion that Tongjing Plaster can cure primary dysmenorrhea, and has no irritation reaction in skin. Methods (1)Twisting body reaction: SD female rats were divided into three groups randomly, vaseline group, ibuprofen group and Tongjing Plaster group .Intraperitoneal injected estradiol benzoate for 10 days. From the fifth days, each group received the medicine respectively for 6 days. At the eleventh day, intraperitoneal injected oxytocin, recorded twisting numbers of each rat within 30 minutes.(2)The effect on the concentration of PGE2 of rat models of dysmenorrhea: After (1) completed, measured the concentration of PGE2 in blood plasma and uterine tissue by radioimmunoassay(RIA).(3)The effect on extracorporeal uterine smooth muscle of rabbits: Female rabbits were intraperitoneal injected estradiol benzoate for 2 days. At the third day the rabbits were killed ,then measured the extent ,frequency
    of the isolated uteri contractions, which influenced by yueyueshu pelletized granule ,high or dosage of Tongjing Plaster respectively .(4)The effect on extracorporeal uterine smooth muscle of rabbits which sensitized by oxytocin: the same method as (3), but the uteri sensitized by oxytocin. (5) Experimental study on skin irritation: hair -cut white rabbits were divided into complete skin group and injured skin group, each group received the
    
    
    medicine respectively, then judged the results according to " Instructive principle for preclinic study of new Chinese drugs" .
    Results (1)Tongjing Plaster evidently inhibited twisting body reaction of rat models of dysmenorrhea. (2) The content of PGEa in blood plasma and uterine tissue of Tongjing Plaster group was evidently under vacuity contrast group, the content in blood plasma of Tongjing Plaster had statistical significant comparing with ibuprofen ,but no statistical significant in uterine tissue.(3)Tongjing Plaster can reduce the frequency and extent of contraction in normal extracorporeal uterine smooth muscle, and reduce the extent of acutely contraction in uterine muscle sensitized by oxytocin. (4) No evidently irritation reaction occurred in either complete skin or injured skin.
    Conclusion (1) Tongjing Plaster can cure primary dysmenorrhea. (2) Tongjing Plaster has effect on primary dysmenorrhea, the mechanism related to inhibiting contraction of isolated uteri both in normal and sensitized by oxytocin , reducing the content of PGE2 and the abirritation . (3)Tongjing Plaster has no irritation in skin, which initially proved Tongjing Plaster is a safe medcine.
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