Anti-hepatitis B virus(HBV)therapy leads to the emer- gence of mutant viral strains during the treatment of chronic hepatitis B with nucleos(t)ides analogues. The existence of HBV variants with primary antiviral resis...Anti-hepatitis B virus(HBV)therapy leads to the emer- gence of mutant viral strains during the treatment of chronic hepatitis B with nucleos(t)ides analogues. The existence of HBV variants with primary antiviral resistance may be important for treatment choice. We studied two patients with chronic HBV infection by sequencing the HBV polymerase gene.They had adefovir-and tenofovir-related mutations in the viral polymerase,although they had never been treated. These mutations were rtV214A/rtN238T in one patient and rtA194T in the other.Thus,mutations in untreated patients deserve cautious surveillance.These data indicate that mutations that can theoretically confer adefovir or tenofovir resistance may emerge in treatmentnaive patients.展开更多
目的：横断面了解浙江省未治疗人群耐药基因变异情况,补充耐药监测本底数据。方法：选取2004-2006年期间在各市县接受流行病学调查的104例未治疗HIV/AIDS感染者,对病毒载量高于最低检测限的99个样本进行HIV蛋白酶（PR）全长和部分逆转...目的：横断面了解浙江省未治疗人群耐药基因变异情况,补充耐药监测本底数据。方法：选取2004-2006年期间在各市县接受流行病学调查的104例未治疗HIV/AIDS感染者,对病毒载量高于最低检测限的99个样本进行HIV蛋白酶（PR）全长和部分逆转录酶（RT）基因区进行RT-PCR扩增测序。使用Stanford HIV Drug Resistance Database（ht-tp：//hivdb.stanford.edu）的在线耐药序列分析软件HIV DB进行序列分析,寻找耐药相关突变位点,并做出样本对各药物敏感性的结论。结果：扩增得到74份PI区序列,1份样本存在蛋白酶抑制剂（PIs）主要相关突变,耐药突变率为1.35%;得到83份RT区序列,4份样本存在逆转录酶抑制剂（RTIs）相关突变,耐药突变率为4.8%。总耐药突变率为6.02%（5/83）。结论：浙江省未治疗HIV感染者中耐药相关突变处于低流行状态。但具体感染者体内存在的PR和RT区主要耐药突变位点,会导致对抗病毒治疗药物不同程度的耐药,应该争取条件对治疗前病人进行基因型耐药检测。展开更多
基金Supported by Siemens Medical Solutions Diagnostics,France,provided the reagents
文摘Anti-hepatitis B virus(HBV)therapy leads to the emer- gence of mutant viral strains during the treatment of chronic hepatitis B with nucleos(t)ides analogues. The existence of HBV variants with primary antiviral resistance may be important for treatment choice. We studied two patients with chronic HBV infection by sequencing the HBV polymerase gene.They had adefovir-and tenofovir-related mutations in the viral polymerase,although they had never been treated. These mutations were rtV214A/rtN238T in one patient and rtA194T in the other.Thus,mutations in untreated patients deserve cautious surveillance.These data indicate that mutations that can theoretically confer adefovir or tenofovir resistance may emerge in treatmentnaive patients.
文摘目的：横断面了解浙江省未治疗人群耐药基因变异情况,补充耐药监测本底数据。方法：选取2004-2006年期间在各市县接受流行病学调查的104例未治疗HIV/AIDS感染者,对病毒载量高于最低检测限的99个样本进行HIV蛋白酶（PR）全长和部分逆转录酶（RT）基因区进行RT-PCR扩增测序。使用Stanford HIV Drug Resistance Database（ht-tp：//hivdb.stanford.edu）的在线耐药序列分析软件HIV DB进行序列分析,寻找耐药相关突变位点,并做出样本对各药物敏感性的结论。结果：扩增得到74份PI区序列,1份样本存在蛋白酶抑制剂（PIs）主要相关突变,耐药突变率为1.35%;得到83份RT区序列,4份样本存在逆转录酶抑制剂（RTIs）相关突变,耐药突变率为4.8%。总耐药突变率为6.02%（5/83）。结论：浙江省未治疗HIV感染者中耐药相关突变处于低流行状态。但具体感染者体内存在的PR和RT区主要耐药突变位点,会导致对抗病毒治疗药物不同程度的耐药,应该争取条件对治疗前病人进行基因型耐药检测。
