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Genetic polymorphisms of fungi in gastric mucosa of patients with different gastric diseases
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 19
- DOI:
- 10.3969/j.issn.1009-3079.2010.19.020
- Key Word:
- 真菌;白色念珠菌;胃溃疡;胃癌;幽门螺旋杆菌
Abstract： 目的:检测人胃黏膜病损处的真菌,及其基因多样性,分析菌种进化分支与黏膜病理损伤的关系.方法:用胃镜钳取有病损的胃黏膜标本65例(慢性胃炎52例,胃渍疡11例,胃癌2例).用念珠菌显色培养基(CHROM agar)进行分离培养鉴定.对鉴定为真菌的菌株样本按照病损程度分组,随机抽取菌株样本进行ITS序列检测,并比对同源性,建立进化树,分析菌株进化分支与胃黏膜病理损伤的关系.结果:分离培养出真菌菌株34个(34/65,52.3%),真菌阳性率在慢性胃炎、胃溃疡、胃癌样本中分别为44.2%(23/52),818%(9/11),100%(2/2),差异有统计学意义(x2=7.023,P=0.030).进行ITS序列检测的18个菌株申请GenBank序列注册号为GQ280298-GQ280334,建立系统进化树显示真菌菌株某些进化分支与胃黏膜痛损有密切关系.结论:不同进化分支的真菌对胃黏膜炎症损伤的程度存在差异.
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