食物不耐受的腹泻型肠易激综合征患者肠黏膜肥大细胞与5-HT的变化及意义

被引:13
作者
唐吟菡 [1 ]
吴萍 [2 ]
许树长 [1 ]
机构
[1] 同济大学附属同济医院消化内科
[2] 同济大学附属同济医院营养科
关键词
食物不耐受; 肠易激综合征; 食物特异性IgG; 5-羟色胺; 肥大细胞;
D O I
暂无
中图分类号
R574 [肠疾病];
学科分类号
100201 [内科学];
摘要
目的观察食物不耐受在腹泻型肠易激综合征患者中的发生情况,分析其不同肠段黏膜肥大细胞及5-HT的变化,探讨食物不耐受在腹泻型肠易激综合征中的作用及意义。方法初筛腹泻型肠易激综合征患者,并对其进行食物特异性IgG检测及结肠镜检查,分别在回肠末端、回盲部、乙状结肠、直肠处钳取黏膜活检,进行5-HT定量及肥大细胞计数。结果腹泻型肠易激综合征患者食物不耐受阳性率为56%。根据其食物特异性IgG检测结果将受试者分为阳性组及阴性组。阳性组受试者回肠末端、回盲部、乙状结肠及直肠部位的5-HT浓度均值与阴性组同部位相比,无显著性差异。两组受试者肠黏膜5-HT的浓度均在回肠末端最高。阳性组回肠末端黏膜的肥大细胞数量明显多于阴性组(P<0.01)。阳性组回肠末端黏膜的肥大细胞数显著多于回盲部、乙状结肠及直肠等部位(P<0.01)。阴性组回肠末端黏膜肥大细胞计数与乙状结肠及直肠相比,有明显增多(P<0.05)。阳性组患者回盲部黏膜肥大细胞数量与5-HT浓度呈显著相关性。结论腹泻型IBS合并食物不耐受者肠黏膜肥大细胞数增加,且以回肠末端肥大细胞数增加更为明显。并发现该类患者肠黏膜肥大细胞数增加与5-HT浓度呈正相关。
引用
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页码:25 / 29+36 +36
页数:6
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