机构地区:[1]天津药物研究院天津市中药质量标志物重点实验室,天津300462 [2]天津药物研究院中药现代制剂与质量控制技术国家地方联合工程实验室,天津300462 [3]天津药物研究院药物成药性评价与系统转化全国重点实验室,天津300462 [4]兰州佛慈制药股份有限公司,甘肃兰州730000 [5]天津中医药大学,天津301617
出 处:《药物评价研究》2023年第11期2330-2337,共8页Drug Evaluation Research
基 金:国家自然科学基金重点项目(U21A20406);兰州市人才创新创业项目(2022-RC-2)。
摘 要:目的 探究消痔丸对复方地芬诺酯致小鼠便秘模型的药效作用及机制。方法 ICR小鼠随机分为对照组、模型组、溴化甲基纳曲酮(阳性对照,58.5 mg·kg^(-1))组和消痔丸低、中、高剂量(1.17、2.34、4.68 g·kg^(-1))组,连续ig给药7 d,给药同时除对照组外,其余各组按照7.5 mg·kg^(-1) ig复方地芬诺酯混悬液制备小鼠便秘模型。观察小鼠一般情况;末次给药结束后,各实验组禁食不禁水16 h,模型组和各给药组ig给予复方地芬诺酯,30 min后给药组ig含相应受试药的活性炭悬液,对照组、模型组ig活性炭悬液。第1批小鼠观察首次排黑便时间、6 h内排便粒数、6 h和24 h内排便质量及粪便含水率。第2批小鼠检测小肠推进率,酶联免疫吸附实验(ELISA)检测结肠组织和血清中5-羟色胺(5-HT)、P物质(SP)、血管活性肠多肽(VIP)水平变化,实时荧光定量PCR(qRT-PCR)法检测结肠组织水通道蛋白3(AQP3)、AQP9 mRNA水平,Western blotting法检测AQP3、AQP9蛋白表达水平。结果 与模型组相比,各给药组小鼠粪便干结情况有所好转,排便量均有不同程度的增加,体质量有所增加,精神状态逐渐好转。与模型组相比,各给药组均能显著缩短排首粒黑便时间,提高6 h排便粒数及粪便含水率、6 h及24 h排便质量(P<0.05、0.01、0.001);除消痔丸低剂量组,其余各给药组小鼠24 h粪便含水率均显著增加(P<0.01、0.001);各给药组小肠炭末推进距离及炭末推进率均明显提高(P<0.05、0.01、0.001);各给药组均能显著降低结肠组织中VIP水平(P<0.01、0.001),除消痔丸低剂量组,其余各给药组均能显著提高结肠组织中5-HT、SP水平(P<0.01、0.001);各给药组均能显著增加血清中5-HT、SP水平并降低VIP的表达水平(P<0.05、0.01、0.001);各给药组AQP3蛋白表达量均显著下降(P<0.01、0.001),AQP9蛋白表达量均显著上升(P<0.05、0.01、0.001);各给药组AQP3 mRNA水平均显著下降(P<0.01、0.001),AQP9 mRNA水�Objective To investigate the therapeutic effect of Xiaozhi Pills(XZP)on constipation induced by diphenoxylate in mice and its mechanism.Methods ICR mice were randomly divided into control group,model group,methylnaltrexone bromide group(positive control,58.5 mg·kg^(-1))and XZP low,medium,and high doses group(1.17,2.34,and 4.68 g·kg^(-1)).Each group was administered by gavage of the corresponding drug once a day for seven days.Except for the control group,the other groups were given diphenoxylate suspension at 7.5 mg·kg^(-1) body weight by gavage on the same day.Observe the general situation of mice.After the end of the last administration,each experimental group fasted for 16 hours and couldn't help but water.The model group and each administration group were given compound diphenoxylate by ig.After 30 minutes,the administration group ig contained activated carbon suspension of the corresponding test drug,while the control group and model group ig contained activated carbon suspension.The first batch of mice were observed for the first time of black stools,the number of stools within six hours,the quality of stools within 6 and 24 hours,and the fecal moisture content.The second batch of mice were tested for intestinal propulsion rate,enzyme-linked immunosorbent assay(ELISA)was used to detect changes in levels of serotonin(5-HT),substance P(SP),and vasoactive intestinal polypeptide(VIP)in colon tissue and serum,real-time fluorescence quantitative PCR(qRT-PCR)was used to detect levels of aquaporin 3(AQP3)and AQP9 mRNA in colon tissue,and Western blotting was used to detect protein expression levels of AQP3 and AQP9.Results Compared with the model group,the fecal dryness of mice in each treatment group improved,with varying degrees of increase in fecal volume,increased body mass,and gradually improved mental state.Compared with the model group,each medication group significantly shortened the first black stool discharge time,improved the number of fecal particles and fecal moisture content at six hours,and improv
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