中华临床感染病杂志
中華臨床感染病雜誌
중화림상감염병잡지
CHINESE JOURNAL OF CLINICAL INFECTIOUS DISEASES
2009年
6期
326-329
,共4页
陈伟烈%杨湛%魏绍静%谭奕洲%唐漾波%肖春花
陳偉烈%楊湛%魏紹靜%譚奕洲%唐漾波%肖春花
진위렬%양담%위소정%담혁주%당양파%초춘화
肝炎病毒%乙型%肝炎表面抗原%乙型%肝炎抗体%乙型%"a"决定簇
肝炎病毒%乙型%肝炎錶麵抗原%乙型%肝炎抗體%乙型%"a"決定簇
간염병독%을형%간염표면항원%을형%간염항체%을형%"a"결정족
Hepatitis B virus%Hepatitis B surface antigens%Hepatitis B antibodies%"a"determinants
目的 分析HBsAg和抗-HBs双阳性乙型肝炎患者HBV S基因"a"决定簇序列特征.方法 巢式PCR法扩增4例HBsAg和抗-HBs双阳性乙型肝炎患者HBV S基因,PCR扩增产物直接进行测序和克隆后测序,对获得的"a"决定簇序列进行比对分析.结果 PCR扩增产物直接测序表明,4例患者HBV"a"决定簇低保守区各有1个氨基酸位点显示多态性.PCR产物克隆后测序表明,病例1 S基因"a"决定簇126位点(s126)氨基酸可为苏氨酸(T)、异亮氨酸(I)和丝氨酸(S),s134氨基酸可为苯丙氨酸(F)和丝氨酸(S);病例2 s126氨基酸可为丙氨酸(A)和苏氨酸(T);病例3 s126氨基酸可为异亮氨酸(I)和天冬酰胺(N);病例4未发现多态性位点.结论 HBV S基因"a"决定簇序列的多态性可能是引起乙型肝炎患者HBsAg和抗-HBs双阳性的原因之一.
目的 分析HBsAg和抗-HBs雙暘性乙型肝炎患者HBV S基因"a"決定簇序列特徵.方法 巢式PCR法擴增4例HBsAg和抗-HBs雙暘性乙型肝炎患者HBV S基因,PCR擴增產物直接進行測序和剋隆後測序,對穫得的"a"決定簇序列進行比對分析.結果 PCR擴增產物直接測序錶明,4例患者HBV"a"決定簇低保守區各有1箇氨基痠位點顯示多態性.PCR產物剋隆後測序錶明,病例1 S基因"a"決定簇126位點(s126)氨基痠可為囌氨痠(T)、異亮氨痠(I)和絲氨痠(S),s134氨基痠可為苯丙氨痠(F)和絲氨痠(S);病例2 s126氨基痠可為丙氨痠(A)和囌氨痠(T);病例3 s126氨基痠可為異亮氨痠(I)和天鼕酰胺(N);病例4未髮現多態性位點.結論 HBV S基因"a"決定簇序列的多態性可能是引起乙型肝炎患者HBsAg和抗-HBs雙暘性的原因之一.
목적 분석HBsAg화항-HBs쌍양성을형간염환자HBV S기인"a"결정족서렬특정.방법 소식PCR법확증4례HBsAg화항-HBs쌍양성을형간염환자HBV S기인,PCR확증산물직접진행측서화극륭후측서,대획득적"a"결정족서렬진행비대분석.결과 PCR확증산물직접측서표명,4례환자HBV"a"결정족저보수구각유1개안기산위점현시다태성.PCR산물극륭후측서표명,병례1 S기인"a"결정족126위점(s126)안기산가위소안산(T)、이량안산(I)화사안산(S),s134안기산가위분병안산(F)화사안산(S);병례2 s126안기산가위병안산(A)화소안산(T);병례3 s126안기산가위이량안산(I)화천동선알(N);병례4미발현다태성위점.결론 HBV S기인"a"결정족서렬적다태성가능시인기을형간염환자HBsAg화항-HBs쌍양성적원인지일.
Objective To identify the sequence of hepatitis B virus S gene"a"determinant in patients with positive HBsAg and anti-HBs.Methods Nested-PCR Was used to amplify the HBV S gene in 4 patients with positive HBsAg and anti-HBs,and the PCR products were sequenced directly or after cloning.The sequences of"a" determinants were then analyzed by sequence alignment.Results Direct sequencing of PCR products showed that there was one amino acid (aa)residue in"a"determinant less conserved region emerging polymorphism in all 4 patients.Clone sequencing showed that aa residue at 126 of "a"determinant in patient 1 miSht be Thr,Ile and Set,at 134 might be Phe and Set;the aa at 126 in patient 2 misht be Ala and Thr.and in patient 3 might be Ile and Asn;aa polymorphism was not found in patient 4.Conclusion The polymorphism of"a"determinant in HBV S gene might be associated with positivity of both HBsAg and anti-HBs in hepatitis B patients.