目的:采用洛哌丁胺灌胃建立便秘大鼠模型,观察大黄对便秘模型大鼠AQP3表达的影响。方法:健康Wistar大鼠18只,随机分为3组,空白组、模型组、大黄组。模型组及大黄组采用配制好的含洛哌丁胺(1.5 mg·kg^(-1)·d^(-1))混悬液2 m L...目的:采用洛哌丁胺灌胃建立便秘大鼠模型,观察大黄对便秘模型大鼠AQP3表达的影响。方法:健康Wistar大鼠18只,随机分为3组,空白组、模型组、大黄组。模型组及大黄组采用配制好的含洛哌丁胺(1.5 mg·kg^(-1)·d^(-1))混悬液2 m L灌胃7 d。模型建立后,大黄组以大黄(5 mg·kg^(-1))混悬液2 m L灌胃。检测结肠传输,采用RT-PCR、免疫组织化学法检测AQP3表达情况。结果:(1)造模后大鼠的体重增加、结肠存留粪便增多、粪便含水量降低、肠道传输时间延长(P<0.05)。(2)大黄干预组大鼠大便量、粪便含水量增加(P<0.05)。(3)大黄干预便秘大鼠,其结肠传输时间缩短,AQP3 mRNA及蛋白表达水平低于模型组(P<0.05)。结论:大黄能抑制AQP3在大鼠结肠黏膜层的表达,其表达降低可能与下调结肠上皮细胞质膜上功能性AQP3数量相关,从而增加粪便含水量。展开更多
In this study, the effect of cyclosporin A （CsA） eye drop on keratoconjunctivitis Sicca （KCS） and its mechanism were studied. The KCS models were established by injecting Pertussis vaccine, complete freund＇s adju...In this study, the effect of cyclosporin A （CsA） eye drop on keratoconjunctivitis Sicca （KCS） and its mechanism were studied. The KCS models were established by injecting Pertussis vaccine, complete freund＇s adjuvant （CFA） and antigen of conjunctiva from isotype mice. Then the KCS models were treated with cyclosporin A eye drop. Changes in breaking-up time （BUT）, lacrimal secretion in 30 min and diversion in 24 h were measured. The percentage of beaker cells, the lymphocytic infiltration in conjunctiva were observed. The expression levels of Aquaporin-3 （AQP3） in conjunctiva epithelial cells, beaker cells and accessory lacrimal gland were immunohistochemically detected. The results showed that there were significant differences in BUT, the percentage of beaker cells, lacrimal secretion in 30 min, the lymphocytic infiltration and the expression of AQP3 between the experimental group and an control group. It was concluded.that CsA eye drop exerts marked therapeutic effect on KCS by inhibiting T lymph cells, increasing the goblet cells and AQP3 expression in conjunctiva.展开更多
文摘目的:采用洛哌丁胺灌胃建立便秘大鼠模型,观察大黄对便秘模型大鼠AQP3表达的影响。方法:健康Wistar大鼠18只,随机分为3组,空白组、模型组、大黄组。模型组及大黄组采用配制好的含洛哌丁胺(1.5 mg·kg^(-1)·d^(-1))混悬液2 m L灌胃7 d。模型建立后,大黄组以大黄(5 mg·kg^(-1))混悬液2 m L灌胃。检测结肠传输,采用RT-PCR、免疫组织化学法检测AQP3表达情况。结果:(1)造模后大鼠的体重增加、结肠存留粪便增多、粪便含水量降低、肠道传输时间延长(P<0.05)。(2)大黄干预组大鼠大便量、粪便含水量增加(P<0.05)。(3)大黄干预便秘大鼠,其结肠传输时间缩短,AQP3 mRNA及蛋白表达水平低于模型组(P<0.05)。结论:大黄能抑制AQP3在大鼠结肠黏膜层的表达,其表达降低可能与下调结肠上皮细胞质膜上功能性AQP3数量相关,从而增加粪便含水量。
文摘In this study, the effect of cyclosporin A （CsA） eye drop on keratoconjunctivitis Sicca （KCS） and its mechanism were studied. The KCS models were established by injecting Pertussis vaccine, complete freund＇s adjuvant （CFA） and antigen of conjunctiva from isotype mice. Then the KCS models were treated with cyclosporin A eye drop. Changes in breaking-up time （BUT）, lacrimal secretion in 30 min and diversion in 24 h were measured. The percentage of beaker cells, the lymphocytic infiltration in conjunctiva were observed. The expression levels of Aquaporin-3 （AQP3） in conjunctiva epithelial cells, beaker cells and accessory lacrimal gland were immunohistochemically detected. The results showed that there were significant differences in BUT, the percentage of beaker cells, lacrimal secretion in 30 min, the lymphocytic infiltration and the expression of AQP3 between the experimental group and an control group. It was concluded.that CsA eye drop exerts marked therapeutic effect on KCS by inhibiting T lymph cells, increasing the goblet cells and AQP3 expression in conjunctiva.
