排序方式： 共有17条查询结果，搜索用时 31 毫秒
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胃溃疡(Gu)、十二指肠溃疡(Du)和对照组(Con)各5例,取肉眼下非病变区胃窦粘膜,用免疫组织化学PAP双重染色法,在同一张切片上显示5-HT细胞和G细胞。结果5-HT细胞多散在于粘膜的中下1/3,呈棕褐色,形状多样,常见有突起的细胞。G细胞呈带状分布于粘膜的中1/3,大部分G细胞为蓝色,个别细胞为蓝黄混合色。它们多为圆形或锥体形。有时可见5-HT细胞和G细胞相毗邻。5-HT细胞数和G细胞数在Gu组分别为:4.17±1.21、7.87±3.13;Du组:5.45±1.96、9.21±5.72;Con组:3.21±1.64、6.19±1.72。5-HT细胞数和G细胞数在Gu组和Du组都增加。且都以Du组为最多,经相关分析二者呈正相关关系。Gu和Du组的5-HT细胞数和G细胞数与对照组相比均有高度显著性差异。Du组的5-HT细胞数和G细胞数与Gu组相比较,亦有高度显著性差异。提示5-HT细胞和G细胞可能参与了消化性溃疡病的调节,特别与Du的关系更为密切。5-HT细胞和G细胞之间的关系有待于进一步研究。 相似文献
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目的为探讨P_(53)、PCNA抗原在胃粘膜中的表达情况及其与胃癌发生的关系方法：应用LsAB免疫织化方法对80例胃粘膜进行了检测结果显了胃癌中P_(53)、PCNA强阳性表达率（80％、93．3％）明显高于异型增生（467％,53．3％）异型增生中P_(53)、PCNA强阳性表达率明显高于慢性萎缩性胃炎及慢性浅表性胃炎．结论研究结果表明,检测P_(53)、PCNA在肖粘膜中的不同表达,对胃癌发生机理的认识有重要意义． 相似文献
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ZHANG Xi-ping ZHANG Jie SONG Qiao-ling CHEN Han-qin 《Journal of Zhejiang University. Science. B》2007,(12)
Acute pancreatitis (AP) is a common acute abdomen in clinic with a rapid onset and dangerous pathogenetic condition. AP can cause an injury of intestinal mucosa barrier, leading to translocation of bacteria or endotoxin through multiple routes, bacterial translocation (BT), gutorigin endotoxaemia, and secondary infection of pancreatic tissue, and then cause systemic in- flammatory response syndrome (SIRS) or multiple organ dysfunction syndrome (MODS), which are important factors influencing AP’s severity and mortality. Meanwhile, the injury of intestinal mucosa barrier plays a key role in AP’s process. Therefore, it is clinically important to study the relationship between the injury of intestinal mucosa barrier and AP. In addition, many factors such as microcirculation disturbance, ischemical reperfusion injury, excessive release of inflammatory mediators and apoptosis may also play important roles in the damage of intestinal mucosa barrier. In this review, we summarize studies on mechanisms of AP. 相似文献
4.
胃溃疡(Gu)、十二指肠溃疡(Du)和对照组(Con)各5例,取肉眼下非病变区胃窦粘膜,用免疫组织化学PAP双重染色法,在同一张切片上显示5-HT细胞和G细胞。结果5-HT细胞多散在于粘膜的中下1/3,呈棕褐色,形状多样,常见有突起的细胞 G细胞呈带状分布于粘膜的中1/3,大部分G细胞为蓝色,个别细胞为蓝黄混合色。它们多为圆形成锥体形、有时可见5-HT细胞和G细胞相毗邻,5-HT细胞数和G细胞数在Gu组分别为:4 17±1.21、7.87±3 13;Du组:5 45±1 96、9 21±5 72;Con组:3.21±1.64、6 19±1.72。5-HT细胞数和G细胞数在Gu组和Du组都增加,且都以Du组为最多,经相关分析二者呈正相关关系,Gu和Du组的5-HT细胞数和G细胞数与对照组相比均有高度显著性差异 Du组的5-HT细胞数和G细胞数与Gu组相比较,亦有高度显著性差异。提示5-HT细胞和G细胞可能参与了消化性溃疡病的调节,特别与Du的关系更为密切,5-HT细胞和G细胞之间的关系有待干进一步研究。 相似文献
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研究目的:补充大豆低聚肽对大鼠小肠上皮组织形态学和IEL的影响,观察大豆低聚肽对高强度运动后肠道粘膜屏障的保护作用.方法:雄性SD大鼠40只,被随机分为灌喂水安静(A)组、灌喂大豆低聚肽安静(B)组、灌喂水运动(C)组和灌喂大豆低聚肽运动(D)组.大鼠在适应性喂养及膳食平衡1周后,进行实验及指标测试.结果:高强度运动后,大鼠肠道粘膜机械屏障出现轻微损伤和IEL减少,而补充大豆低聚肽后,与C组比较,D组大鼠小肠粘膜厚度增高33.36%(P<0.05),小肠绒毛高度增高12.91%(P<0.05),小肠粘膜隐窝深度增加32.84%(P<0.05),IEL增加40.96%(P<0.05).结论:补充大豆低聚肽可改善高强度运动后小肠粘膜屏障功能. 相似文献
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Hypertonic saline resuscitation reduces apoptosis of intestinal mucosa in a rat model of hemorrhagic shock 总被引：1，自引：0，他引：1
Objective: To investigate the early effects of hypertonic and isotonic saline solutions on apoptosis of intestinal mueosa in rats with hemorrhagic shock. Methods: A model of rat with severe hemorrhagic shock was established in 21 Spragne-Dawley (SD) rats. The rats were randomly divided into the sham group, normal saline resuscitation (NS) group, and hypertonic saline resuscitation (HTS) group, with 7 in each group. We detected and compared the apoptosis in small intestinal mucosa of rats after hemorrhagic shock and resuscitation by terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL), FITC (fluo-rescein-iso-tbiocyanate)-Annexin V/PI (propidium iodide) double staining method, and flow cytometry. Results: In the early stage of hemorrhagic shock and resuscitation, marked apoptosis of small intestinal mucosa in the rats of both NS and HTS groups was observed. The numbers of apoptotic cells in these two groups were significantly greater than that in the sham group (P＜0.01). In the HTS group, the apoptic cells significantly decreased, compared with the NS group (P＜0.01). Conclusion: In this rat model of severe hemorrhagic shock, the HTS resuscitation of small volume is more effective than the NS resuscitation in reducing apoptosis of intestinal mucosa in rats, which may improve the prognosis of trauma. 相似文献
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目的 :研究热休克蛋白 90α(HSP90α)在人胃癌组织中的表达。方法 :应用兔抗人HSP90α多克隆抗体对 6 6例手术及胃镜活检胃癌及非胃癌粘膜病变石蜡标本 ,用免疫组织化学SP试剂检测HSP90α的表达。结果 :HSP90α在胃癌、浅表性胃炎、萎缩性胃炎、萎缩性胃炎伴肠上皮化生和不典型增生组织中的阳性率分别为 88%、36 %、5 0 %、75 %。HSP90α在胃癌、萎缩性胃炎伴肠上皮化生和不典型增生中的阳性率明显高于单纯性胃炎病变。在胃癌中的表达率高于萎缩性胃炎伴肠上皮化生和不典型增生 (P <0 .0 1)。结论 :HSP90α在人胃癌及癌前病变中表达值明显增高 ,此现象可能和胃癌的产生和发展有密切关系 相似文献
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Mechanism of acute pancreatitis complicated with injury of intestinal mucosa barrier 总被引：4，自引：0，他引：4
Acute pancreatitis （AP） is a common acute abdomen in clinic with a rapid onset and dangerous pathogenetic condition AP can cause an injury of intestinal mucosa barrier, leading to translocation of bacteria or endotoxin through multiple routes, bacterial translocation （BT）, gutorigin endotoxaemia, and secondary infection of pancreatic tissue, and then cause systemic inflammatory response syndrome （SIRS） or multiple organ dysfunction syndrome （MODS）, which are important factors influencing AP＇s severity and mortality. Meanwhile, the injury of intestinal mucosa barrier plays a key role in AP＇s process. Therefore, it is clinically important to study the relationship between the injury of intestinal mucosa barrier and AP. In addition, many factors such as microcirculation disturbance, ischemical reperfusion injury, excessive release of inflammatory mediators and apoptosis may also play important roles in the damage of intestinal mucosa barrier. In this review, we summarize studies on mechanisms of AP. 相似文献
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为阐明过度训练时肠黏膜免疫屏障结构和功能的变化及其机制,采用建立一般训练和过度训练大鼠模型,应用形态学手段结合免疫组织化学和图像分析方法,对训练后2组大鼠肠道黏膜的超微结构、脂质过氧化反应产物丙二醛(MDA)含量和黏膜IgA的产生及含量作定位和定量研究.结果表明:第6周末,一般训练组和过度训练组大鼠肠道黏膜的超微结构、MDA 含量和黏膜IgA水平未见异常改变;第10周末,过度训练组电镜下见肠道黏膜超微结构明显改变,MDA 含量明显升高,IgA 浆细胞计数及其平均吸光度,以及黏液 IgA 水平均显著低于对照组(P<0.01).提示过度训练可以引起肠道黏膜和 IgA 屏障结构改变,这些改变可能与肠黏膜脂质过氧化反应增加有关. 相似文献