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不同基因亚型幽门螺杆菌对甲硝唑敏感性的研究 被引量:1

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摘要 目的研究不同基因亚型幽门螺杆菌(H.pylori)对甲硝唑的敏感性。方法PCR法检测H.pylori菌株的casA及vaeA(sl,mlb,m2)的基因亚型。琼脂稀释法测定H.pylori分离株对甲硝唑的最低抑菌浓度(ME),并计算MIC50和MIC90值。结果51株H.pylori菌株中cagA+和cagA-菌株分别为46例(90.20%)和5例(9.80%);vacAsl+和vacAsl-菌株分别为32例(62.75%)和19例(37.25%);vacAmlb+和vacAmlb-菌株分别为33例(64.71%)和18例(35.29%);vacAm2+和va-cAm2-菌株分别为38例(74.51%)和13例(25.49%)。分析不同cagA/vacA基因亚型的H.pylori菌株对甲硝唑敏感性的关系发现:cagA+/CagA-、vacAsl+/vacAsl-及vacAm2+/vacAm2-H.Py-lori菌株对甲硝唑的敏感性组间差异无统计学意义;vacAmlb+/vacAmlb-H.pylori菌株对甲硝唑的敏感性组间差异有统计学意义:vacAmlb+基因亚型的H.pylon菌株较vacAmlb-基因亚型的H.pylori菌株对甲硝唑敏感。结论vacAmlb+H.pylori菌株较vacAmlb-菌株对甲硝唑敏感。
出处 《实用肿瘤学杂志》 CAS 2004年第3期188-190,共3页 Practical Oncology Journal
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