H5亚型禽流感病毒分离株对金刚烷胺耐药性的鉴定
The Identification of Amantadine-Resistance of an H5 Subtype Avian Influenza Virus Isolate
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摘要: 对1株H5亚型禽流感病毒(AIV)分离株进行了金刚烷胺耐药性的鉴定.应用RT—PCR获得了AIV178株的M基因,序列分析显示M2蛋白有S31N的点突变;动物试验发现该毒株对200mg/L金刚烷胺饮水途径给药仍有抗性.结果表明AIV178分离株具有对金刚烷胺的耐药性,而且M2蛋白的第31位氨基酸突变可能与此有关.Abstract: The amantadine-resistance of an H5 subtype avian influenza virus(AIV) isolate was characterized.The M gene of AIV 178 isolate was obtained by RT-PCR,and sequence analysis showed that M2 protein contained S31N substitution.Animal trial revealed that the isolate was resistant to the treatment of 200 mg/L amantadine via drinking water.The results suggested that AIV 178 isolate was amantadine resistant,and the position 31 amino acid point mutation in M2 protein may confer the resistance.