Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are...Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders.展开更多
正常的胃肠运动功能依赖于节律性的胃肠蠕动,这种规律性的蠕动目前主要认为与肠神经系统及众多的神经递质有关,但其具体的调控机制目前尚有争议,主要争论的焦点在于肠神经系统所释放的神经递质是否直接作用于平滑肌细胞[1-2]。近年来,...正常的胃肠运动功能依赖于节律性的胃肠蠕动,这种规律性的蠕动目前主要认为与肠神经系统及众多的神经递质有关,但其具体的调控机制目前尚有争议,主要争论的焦点在于肠神经系统所释放的神经递质是否直接作用于平滑肌细胞[1-2]。近年来,越来越多的研究发现,Cajal间质细胞（interstitial cells of Cajal,ICC）在胃肠动力调节方面扮演着至关重要的作用[3]。因此,本文拟就从生理结构基础、展开更多
AIM To investigate the underlying effect of Jianpi Qingchang decoction(JQD) regulating intestinal motility of dextran sulfate sodium(DSS)-induced colitis in mice. METHODS C57BL/6 mice were randomly divided into four g...AIM To investigate the underlying effect of Jianpi Qingchang decoction(JQD) regulating intestinal motility of dextran sulfate sodium(DSS)-induced colitis in mice. METHODS C57BL/6 mice were randomly divided into four groups: the control group, the DSS group, the JQD group, and the 5-aminosalicylic acid group. Except for the control group, colitis was induced in other groups by giving distilled water containing 5% DSS. Seven days after modeling, the mice were administered corresponding drugs intragastrically. The mice were sacrificed on the 15^(th) day. The disease activity index, macroscopic and histopathologic lesions, and ultrastructure of colon interstitial cells of Cajal(ICC) were observed. The levels of tumor necrosis factor-alpha(TNF-α), interleukin(IL)-1β, IL-10 and interferon gamma(IFN-γ), the expression of nuclear factor-kappa B(NF-κB) p65, c-kit, microtubule-associated protein 1 light chain 3(LC3-Ⅱ) and Beclin-l m RNA, and the colonic smooth muscle tension were assessed. RESULTS Acute inflammation occurred in the mice administered DSS. Compared with the control group, the levels of IL-1β, TNF-α, IL-10 and IFN-γ, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency increased(P < 0.05), the expression of c-kit m RNA and the colonic smooth muscle contractile amplitude decreased in the DSS group(P < 0.05). Compared with the DSS group, the levels of IL-10 and IFN-γ, the expression of c-kit m RNA, and the colonic smooth muscle contractile amplitude increased(P < 0.05), the levels of TNF-α and IL-1β, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency decreased in the JQD group(P < 0.05).CONCLUSION JQD can regulate the intestinal motility of DSS-induced colitis in mice through suppressing intestinal inflammatory cascade reaction, reducing autophagy of ICC, and regulating the network path of ICC/smooth muscle cells.展开更多
胃肠道Cajal间质细胞(interstitial cells of Cajal,ICCs)是一类分布于消化道各个部位的特殊间质细胞,它和肠神经系统、平滑肌之间的特殊位置关系构成了"肠神经-ICCs-平滑肌细胞"的网络结构,其中ICCs是该网络重要的协调者,与...胃肠道Cajal间质细胞(interstitial cells of Cajal,ICCs)是一类分布于消化道各个部位的特殊间质细胞,它和肠神经系统、平滑肌之间的特殊位置关系构成了"肠神经-ICCs-平滑肌细胞"的网络结构,其中ICCs是该网络重要的协调者,与肠道慢波的形成密切相关。胃肠道ICCs的特异性受体c-kit,与其配体干细胞因子(stem cell factors,SCF)结合后启动的信号途径,在ICCs的生长、发育及表型维持中起着重要作用。因此,从SCF/c-kit信号系统入手,有望拉开治疗ICCs相关性胃肠运动功能障碍性疾病的新序幕。展开更多
胃肠动力障碍性疾病(disorders of gastrointestinal motility,DGIM)较为常见,但发病机制尚不明确。Cajal间质细胞(interstitial cells of Cajal,ICC)是胃肠道慢波运动的起搏细胞、调控者和感受器,其病理性改变可导致DGIM的发生。ICC的...胃肠动力障碍性疾病(disorders of gastrointestinal motility,DGIM)较为常见,但发病机制尚不明确。Cajal间质细胞(interstitial cells of Cajal,ICC)是胃肠道慢波运动的起搏细胞、调控者和感受器,其病理性改变可导致DGIM的发生。ICC的重要生理功能使其有望成为DGIM的治疗新靶点。本文就ICC的研究认识及其在DGIM中作用的相关研究作一概述。展开更多
目的:探究白术破壁饮片对慢传输型便秘(slow transit constipation,STC)小鼠肠神经递质、Cajal间质细胞(interstitial cells of Cajal,ICC)的干细胞因子(stem cell factor,SCF)/干细胞生长因子受体(c-kit)信号通路的影响。方法:采用皮...目的:探究白术破壁饮片对慢传输型便秘(slow transit constipation,STC)小鼠肠神经递质、Cajal间质细胞(interstitial cells of Cajal,ICC)的干细胞因子(stem cell factor,SCF)/干细胞生长因子受体(c-kit)信号通路的影响。方法:采用皮下注射2.5 mg/(kg·d)盐酸吗啡注射液法复制STC小鼠模型,选取48只雌雄各半昆明小鼠随机分为正常组,模型组,白术破壁饮片低、中、高剂量组(25、50、100 mg/kg)和莫沙必利组(1.5 mg/kg),每组8只。各组予以不同药物干预1周后,检测造模后和给药后各组小鼠粪便性状、肠道推进率;采用酶联免疫反应(enzyme-linked immunosorbent assay,ELISA)测定各组小鼠结肠神经递质P物质(substance P,SP)、乙酰胆碱(acetylcholine,Ach)、血管活性肠肽(vasoactive intestinal peptide,VIP)、一氧化氮(nitric oxide,NO)和5-羟色胺(5-hydroxytrytamine,5-HT)含量;采用Western blot检测小鼠结肠组织SCF和c-kit蛋白的表达。结果:ELISA结果显示,与正常组比较,模型组SP和Ach含量均明显降低(SP:230.41±16.41 vs. 146.69±15.59;Ach:577.68±39.35 vs. 281.50±39.40)。与模型组比较,白术破壁饮片低剂量组、白术破壁饮片中剂量组和白术破壁饮片高剂量组SP含量均明显升高(146.69±15.59 vs. 188.25±4.60;146.69±15.59 vs. 201.78±4.44;146.69±15.59 vs. 307.51±16.94);白术破壁饮片高剂量组和莫沙必利组Ach含量均明显升高(281.50±39.40 vs. 400.93±12.21;281.50±39.40 vs. 422.22±22.70)。与白术破壁饮片高剂量组比较,白术破壁饮片低剂量组和白术破壁饮片中剂量组SP和Ach含量均明显降低(SP:307.51±16.94 vs.188.25±4.60;307.51±16.94 vs. 201.78±4.44;Ach:400.93±12.21 vs. 283.79±11.53;400.93±12.21 vs. 327.81±14.77);莫沙必利组SP含量均明显降低(307.51±16.94 vs. 164.08±12.54)。与正常组比较,模型组VIP、NO和5-HT含量均明显升高(VIP:64.47±2.69 vs. 87.74±2.93;NO:38.21±1.76 vs. 42.78±1.69;5-HT:219.58±11.60 vs. 276.08±7.97)。与模型组比较,白术展开更多
文摘Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders.
文摘正常的胃肠运动功能依赖于节律性的胃肠蠕动,这种规律性的蠕动目前主要认为与肠神经系统及众多的神经递质有关,但其具体的调控机制目前尚有争议,主要争论的焦点在于肠神经系统所释放的神经递质是否直接作用于平滑肌细胞[1-2]。近年来,越来越多的研究发现,Cajal间质细胞（interstitial cells of Cajal,ICC）在胃肠动力调节方面扮演着至关重要的作用[3]。因此,本文拟就从生理结构基础、
基金Supported by the National Natural Science Foundation of China,No.81403355 and No.81573892the Project of 3-Year Action Plan for Shanghai Municipal Chinese Medicine Development,No.ZY3-RCPY-2-2001
文摘AIM To investigate the underlying effect of Jianpi Qingchang decoction(JQD) regulating intestinal motility of dextran sulfate sodium(DSS)-induced colitis in mice. METHODS C57BL/6 mice were randomly divided into four groups: the control group, the DSS group, the JQD group, and the 5-aminosalicylic acid group. Except for the control group, colitis was induced in other groups by giving distilled water containing 5% DSS. Seven days after modeling, the mice were administered corresponding drugs intragastrically. The mice were sacrificed on the 15^(th) day. The disease activity index, macroscopic and histopathologic lesions, and ultrastructure of colon interstitial cells of Cajal(ICC) were observed. The levels of tumor necrosis factor-alpha(TNF-α), interleukin(IL)-1β, IL-10 and interferon gamma(IFN-γ), the expression of nuclear factor-kappa B(NF-κB) p65, c-kit, microtubule-associated protein 1 light chain 3(LC3-Ⅱ) and Beclin-l m RNA, and the colonic smooth muscle tension were assessed. RESULTS Acute inflammation occurred in the mice administered DSS. Compared with the control group, the levels of IL-1β, TNF-α, IL-10 and IFN-γ, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency increased(P < 0.05), the expression of c-kit m RNA and the colonic smooth muscle contractile amplitude decreased in the DSS group(P < 0.05). Compared with the DSS group, the levels of IL-10 and IFN-γ, the expression of c-kit m RNA, and the colonic smooth muscle contractile amplitude increased(P < 0.05), the levels of TNF-α and IL-1β, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency decreased in the JQD group(P < 0.05).CONCLUSION JQD can regulate the intestinal motility of DSS-induced colitis in mice through suppressing intestinal inflammatory cascade reaction, reducing autophagy of ICC, and regulating the network path of ICC/smooth muscle cells.
文摘胃肠动力障碍性疾病(disorders of gastrointestinal motility,DGIM)较为常见,但发病机制尚不明确。Cajal间质细胞(interstitial cells of Cajal,ICC)是胃肠道慢波运动的起搏细胞、调控者和感受器,其病理性改变可导致DGIM的发生。ICC的重要生理功能使其有望成为DGIM的治疗新靶点。本文就ICC的研究认识及其在DGIM中作用的相关研究作一概述。
文摘目的:探究白术破壁饮片对慢传输型便秘(slow transit constipation,STC)小鼠肠神经递质、Cajal间质细胞(interstitial cells of Cajal,ICC)的干细胞因子(stem cell factor,SCF)/干细胞生长因子受体(c-kit)信号通路的影响。方法:采用皮下注射2.5 mg/(kg·d)盐酸吗啡注射液法复制STC小鼠模型,选取48只雌雄各半昆明小鼠随机分为正常组,模型组,白术破壁饮片低、中、高剂量组(25、50、100 mg/kg)和莫沙必利组(1.5 mg/kg),每组8只。各组予以不同药物干预1周后,检测造模后和给药后各组小鼠粪便性状、肠道推进率;采用酶联免疫反应(enzyme-linked immunosorbent assay,ELISA)测定各组小鼠结肠神经递质P物质(substance P,SP)、乙酰胆碱(acetylcholine,Ach)、血管活性肠肽(vasoactive intestinal peptide,VIP)、一氧化氮(nitric oxide,NO)和5-羟色胺(5-hydroxytrytamine,5-HT)含量;采用Western blot检测小鼠结肠组织SCF和c-kit蛋白的表达。结果:ELISA结果显示,与正常组比较,模型组SP和Ach含量均明显降低(SP:230.41±16.41 vs. 146.69±15.59;Ach:577.68±39.35 vs. 281.50±39.40)。与模型组比较,白术破壁饮片低剂量组、白术破壁饮片中剂量组和白术破壁饮片高剂量组SP含量均明显升高(146.69±15.59 vs. 188.25±4.60;146.69±15.59 vs. 201.78±4.44;146.69±15.59 vs. 307.51±16.94);白术破壁饮片高剂量组和莫沙必利组Ach含量均明显升高(281.50±39.40 vs. 400.93±12.21;281.50±39.40 vs. 422.22±22.70)。与白术破壁饮片高剂量组比较,白术破壁饮片低剂量组和白术破壁饮片中剂量组SP和Ach含量均明显降低(SP:307.51±16.94 vs.188.25±4.60;307.51±16.94 vs. 201.78±4.44;Ach:400.93±12.21 vs. 283.79±11.53;400.93±12.21 vs. 327.81±14.77);莫沙必利组SP含量均明显降低(307.51±16.94 vs. 164.08±12.54)。与正常组比较,模型组VIP、NO和5-HT含量均明显升高(VIP:64.47±2.69 vs. 87.74±2.93;NO:38.21±1.76 vs. 42.78±1.69;5-HT:219.58±11.60 vs. 276.08±7.97)。与模型组比较,白术
