In rats, water-immersion restraint stress is a model of experimental ulceration. We encountered a case in which multiple hemorrhagic gastric ulcers formed in the stomach in a setting similar to water-immersion restrai...In rats, water-immersion restraint stress is a model of experimental ulceration. We encountered a case in which multiple hemorrhagic gastric ulcers formed in the stomach in a setting similar to water-immersion restraint stress. The patient was a 54-year-old man who was found wet on a riverbank and transported by ambulance. Because of hypothermia and renal failure, hemodialysis was performed. Tarry stools were noted and endoscopy revealed the presence of multiple hemorrhagic gastric ulcers;thus, hemostasis was performed end oscopically. During the course, pseudo membranous colitis also developed and was ameliorated with vancomycin. Further, the renal failure and gastric ulcers improved, and the patient was discharged from hospital 25 days later. The reason why he survived more than 2 weeks was the hot summer season and he was not soaked in the river water throughout.展开更多
目的探讨辣椒素(capsaicin,CAP)对水浸-束缚应激(water immersion restraint stress,WIRS)大鼠胃动力的作用及机制。方法雄性SD大鼠30只,随机分为3组:正常对照组、WIRS模型组、CAP干预组。其中正常对照组自由摄食进水;WIRS模型组每日WIR...目的探讨辣椒素(capsaicin,CAP)对水浸-束缚应激(water immersion restraint stress,WIRS)大鼠胃动力的作用及机制。方法雄性SD大鼠30只,随机分为3组:正常对照组、WIRS模型组、CAP干预组。其中正常对照组自由摄食进水;WIRS模型组每日WIRS 1 h后自由摄食进水;CAP干预组每日WIRS 1 h后喂食CAP饲料。4周后所有大鼠给予酚红溶液灌胃后麻醉处死,测定胃酚红排空率;采用ELISA法检测血浆胃动素(motilin,MTL)水平;采用免疫组化方法检测胃窦辣椒素受体(transient receptor potential vanilloid1,TRPV1)、P物质(substance P,SP)的表达;用RT-PCR方法检测c-kit m RNA、SCF m RNA的转录水平。结果大鼠胃酚红排空率:WIRS模型组胃酚红排空率显著低于其余两组(P<0.05);正常对照组胃酚红排空率与CAP干预组相比,差异无统计学意义(P>0.05)。血浆MTL水平:WIRS模型组血浆MTL水平显著低于其余两组(P<0.05);正常对照组血浆MTL水平显著低于CAP干预组(P<0.05)。免疫组化结果:大鼠胃窦组织TRPV1表达积分:CAP干预组TRPV1表达水平显著高于其余两组(P<0.05);正常对照组TRPV1表达水平与WIRS模型组相比,差异无统计学意义(P>0.05)。大鼠胃窦组织SP表达积分:WIRS模型组SP表达水平显著低于其余两组(P<0.05);正常对照组SP表达水平显著低于CAP干预组(P<0.05)。RT-PCR方法检测结果:大鼠胃窦组织c-kit m RNA表达结果:WIRS模型组c-kit m RNA转录水平显著低于正常对照组(P<0.05);正常对照组、WIRS模型组c-kit m RNA转录水平与CAP干预组相比,差异无统计学意义(P>0.05)。大鼠胃窦组织SCF m RNA表达结果:WIRS模型组SCF m RNA转录水平显著低于其余两组(P<0.05);正常对照组SCF m RNA转录水平显著低于CAP干预组(P<0.05)。结论 CAP可能对WIRS大鼠胃动力具有改善作用,其机制可能与CAP调节TRPV1、SP的表达及MTL的释放有关,是否与Cajal间质细胞相关尚不明确。展开更多
目的:研究不同时程低强度束缚水浸应激对大鼠Cajal间质细胞(interstitial cells of Cajal,ICC)数量的影响,探讨慢性应激导致胃动力改变与ICC的相关性.方法:雄性SPF级SD大鼠48只被随机分为6组,即实验3d、7d、28d组和对照3d、7d、28d组,每...目的:研究不同时程低强度束缚水浸应激对大鼠Cajal间质细胞(interstitial cells of Cajal,ICC)数量的影响,探讨慢性应激导致胃动力改变与ICC的相关性.方法:雄性SPF级SD大鼠48只被随机分为6组,即实验3d、7d、28d组和对照3d、7d、28d组,每组8只.实验组23℃水域箱内束缚水浸1h/d,对照组自由摄食饮水.4d、8d、29d晨序贯脱颈处死.取膜胃小弯侧(ICC-1)、腺胃小弯侧(ICC-3)、腺胃大弯侧上1/3处(ICC-5)、腺胃幽门旁0.5cm处(ICC-7)组织各一块放入固定液中,制成石蜡切片;抗c-kit免疫组织化学染色,观察不同层次ICC计数.结果:正常大鼠胃内ICC主要分布在肌内(ICC-MY)和肌间(ICC-IM),而黏膜下(ICC-SM)和深肌丛(ICC-DMP)较少.实验3d组的各层ICC数量与对照组相比无明显差异,实验7d和28d组大鼠不同部位、不同层次及同一部位不同层次ICC数量明显异于同期对照组.应激时间长短对不同部位不同层次及同一部位不同层次ICC总数有明显影响,其大致规律是先正常后增加再减少,即先升高后降低.应激主要引起ICC-MY及ICC-IM数量发生变化,而本来较少的ICC-SM和ICC-DMP受影响较轻.结论:长时间低强度的慢性束缚水浸应激可以使大鼠胃窦ICC数量发生变化.展开更多
文摘In rats, water-immersion restraint stress is a model of experimental ulceration. We encountered a case in which multiple hemorrhagic gastric ulcers formed in the stomach in a setting similar to water-immersion restraint stress. The patient was a 54-year-old man who was found wet on a riverbank and transported by ambulance. Because of hypothermia and renal failure, hemodialysis was performed. Tarry stools were noted and endoscopy revealed the presence of multiple hemorrhagic gastric ulcers;thus, hemostasis was performed end oscopically. During the course, pseudo membranous colitis also developed and was ameliorated with vancomycin. Further, the renal failure and gastric ulcers improved, and the patient was discharged from hospital 25 days later. The reason why he survived more than 2 weeks was the hot summer season and he was not soaked in the river water throughout.
文摘目的探讨辣椒素(capsaicin,CAP)对水浸-束缚应激(water immersion restraint stress,WIRS)大鼠胃动力的作用及机制。方法雄性SD大鼠30只,随机分为3组:正常对照组、WIRS模型组、CAP干预组。其中正常对照组自由摄食进水;WIRS模型组每日WIRS 1 h后自由摄食进水;CAP干预组每日WIRS 1 h后喂食CAP饲料。4周后所有大鼠给予酚红溶液灌胃后麻醉处死,测定胃酚红排空率;采用ELISA法检测血浆胃动素(motilin,MTL)水平;采用免疫组化方法检测胃窦辣椒素受体(transient receptor potential vanilloid1,TRPV1)、P物质(substance P,SP)的表达;用RT-PCR方法检测c-kit m RNA、SCF m RNA的转录水平。结果大鼠胃酚红排空率:WIRS模型组胃酚红排空率显著低于其余两组(P<0.05);正常对照组胃酚红排空率与CAP干预组相比,差异无统计学意义(P>0.05)。血浆MTL水平:WIRS模型组血浆MTL水平显著低于其余两组(P<0.05);正常对照组血浆MTL水平显著低于CAP干预组(P<0.05)。免疫组化结果:大鼠胃窦组织TRPV1表达积分:CAP干预组TRPV1表达水平显著高于其余两组(P<0.05);正常对照组TRPV1表达水平与WIRS模型组相比,差异无统计学意义(P>0.05)。大鼠胃窦组织SP表达积分:WIRS模型组SP表达水平显著低于其余两组(P<0.05);正常对照组SP表达水平显著低于CAP干预组(P<0.05)。RT-PCR方法检测结果:大鼠胃窦组织c-kit m RNA表达结果:WIRS模型组c-kit m RNA转录水平显著低于正常对照组(P<0.05);正常对照组、WIRS模型组c-kit m RNA转录水平与CAP干预组相比,差异无统计学意义(P>0.05)。大鼠胃窦组织SCF m RNA表达结果:WIRS模型组SCF m RNA转录水平显著低于其余两组(P<0.05);正常对照组SCF m RNA转录水平显著低于CAP干预组(P<0.05)。结论 CAP可能对WIRS大鼠胃动力具有改善作用,其机制可能与CAP调节TRPV1、SP的表达及MTL的释放有关,是否与Cajal间质细胞相关尚不明确。
基金supported by the Project of Hunan Provincial Social Science Achievement Review Committee (No.XSP20YBC255)the Guangxi Science and Technology Plan Project (No.AD20238035)+1 种基金the Open Project of Guangxi Key Laboratory of Brain and Cognitive Neuroscience (No.GKLBCN-20190105-02)the Guangxi Zhuang Autonomous Region Students’ Innovation and Entrepreneurship Training Program of China (No.202010601050)。
文摘目的:研究不同时程低强度束缚水浸应激对大鼠Cajal间质细胞(interstitial cells of Cajal,ICC)数量的影响,探讨慢性应激导致胃动力改变与ICC的相关性.方法:雄性SPF级SD大鼠48只被随机分为6组,即实验3d、7d、28d组和对照3d、7d、28d组,每组8只.实验组23℃水域箱内束缚水浸1h/d,对照组自由摄食饮水.4d、8d、29d晨序贯脱颈处死.取膜胃小弯侧(ICC-1)、腺胃小弯侧(ICC-3)、腺胃大弯侧上1/3处(ICC-5)、腺胃幽门旁0.5cm处(ICC-7)组织各一块放入固定液中,制成石蜡切片;抗c-kit免疫组织化学染色,观察不同层次ICC计数.结果:正常大鼠胃内ICC主要分布在肌内(ICC-MY)和肌间(ICC-IM),而黏膜下(ICC-SM)和深肌丛(ICC-DMP)较少.实验3d组的各层ICC数量与对照组相比无明显差异,实验7d和28d组大鼠不同部位、不同层次及同一部位不同层次ICC数量明显异于同期对照组.应激时间长短对不同部位不同层次及同一部位不同层次ICC总数有明显影响,其大致规律是先正常后增加再减少,即先升高后降低.应激主要引起ICC-MY及ICC-IM数量发生变化,而本来较少的ICC-SM和ICC-DMP受影响较轻.结论:长时间低强度的慢性束缚水浸应激可以使大鼠胃窦ICC数量发生变化.
