南昌大学学报(医学版)
南昌大學學報(醫學版)
남창대학학보(의학판)
ACTA ACADEMIAE MEDICINAE JIANGXI
2014年
4期
18-21
,共4页
CD4+CD25+调节性T细胞%干扰素-γ%白介素-4%乙型肝炎病毒%宫内感染
CD4+CD25+調節性T細胞%榦擾素-γ%白介素-4%乙型肝炎病毒%宮內感染
CD4+CD25+조절성T세포%간우소-γ%백개소-4%을형간염병독%궁내감염
CD4+ CD2 5+ regulatory T cells%interferon-γ%interleukin-4%hepatitis B virus%intrauterine infection
目的:探讨孕妇外周血及新生儿脐血中 CD4+CD25+调节性 T细胞(CD4+CD25+Treg)表达水平对 Th1/Th2类细胞免疫平衡的作用及与 HBV宫内感染的相关性。方法选择 HBsAg阳性但肝功能正常的单胎足月妊娠未临产孕妇101例及其新生儿101例,根据脐血的检验结果将8例发生 HBV宫内感染的新生儿及其母亲纳入研究组(n=16),将93例未发生 HBV宫内感染的新生儿及其母亲纳入对照组(n=186)。采用流式细胞仪检测CD4+CD25+Treg和 ELISA法检测各组干扰素-r(IFN-γ)及白介素-4(IL-4)水平。结果研究组中孕妇外周血和新生儿脐血的 IFN-γ及 IFN-γ/IL-4均明显低于对照组(P<0.05);且 IL-4及CD4+CD25+Treg占 CD4+淋巴细胞百分比都明显高于对照组(P<0.05)。研究组和对照组中孕妇外周血及新生儿脐血的CD4+CD25+Treg与IFN-γ、IFN-γ/IL-4呈负相关(P<0.01,P<0.05),与 IL-4呈正相关(P<0.01,P<0.05)。结论 HBV宫内感染时,孕妇和新生儿Th1型特异性反应降低而Th2型特异性反应增强,Th1/Th2间的细胞免疫失衡可能是促使 HBV宫内感染的机制之一。HBV宫内感染与孕妇外周血和新生儿脐血中 CD4+CD25+Treg 的分泌水平升高有关,CD4+CD25+Treg水平的升高可能是发生 HBV宫内感染的高危因素之一。
目的:探討孕婦外週血及新生兒臍血中 CD4+CD25+調節性 T細胞(CD4+CD25+Treg)錶達水平對 Th1/Th2類細胞免疫平衡的作用及與 HBV宮內感染的相關性。方法選擇 HBsAg暘性但肝功能正常的單胎足月妊娠未臨產孕婦101例及其新生兒101例,根據臍血的檢驗結果將8例髮生 HBV宮內感染的新生兒及其母親納入研究組(n=16),將93例未髮生 HBV宮內感染的新生兒及其母親納入對照組(n=186)。採用流式細胞儀檢測CD4+CD25+Treg和 ELISA法檢測各組榦擾素-r(IFN-γ)及白介素-4(IL-4)水平。結果研究組中孕婦外週血和新生兒臍血的 IFN-γ及 IFN-γ/IL-4均明顯低于對照組(P<0.05);且 IL-4及CD4+CD25+Treg佔 CD4+淋巴細胞百分比都明顯高于對照組(P<0.05)。研究組和對照組中孕婦外週血及新生兒臍血的CD4+CD25+Treg與IFN-γ、IFN-γ/IL-4呈負相關(P<0.01,P<0.05),與 IL-4呈正相關(P<0.01,P<0.05)。結論 HBV宮內感染時,孕婦和新生兒Th1型特異性反應降低而Th2型特異性反應增彊,Th1/Th2間的細胞免疫失衡可能是促使 HBV宮內感染的機製之一。HBV宮內感染與孕婦外週血和新生兒臍血中 CD4+CD25+Treg 的分泌水平升高有關,CD4+CD25+Treg水平的升高可能是髮生 HBV宮內感染的高危因素之一。
목적:탐토잉부외주혈급신생인제혈중 CD4+CD25+조절성 T세포(CD4+CD25+Treg)표체수평대 Th1/Th2류세포면역평형적작용급여 HBV궁내감염적상관성。방법선택 HBsAg양성단간공능정상적단태족월임신미임산잉부101례급기신생인101례,근거제혈적검험결과장8례발생 HBV궁내감염적신생인급기모친납입연구조(n=16),장93례미발생 HBV궁내감염적신생인급기모친납입대조조(n=186)。채용류식세포의검측CD4+CD25+Treg화 ELISA법검측각조간우소-r(IFN-γ)급백개소-4(IL-4)수평。결과연구조중잉부외주혈화신생인제혈적 IFN-γ급 IFN-γ/IL-4균명현저우대조조(P<0.05);차 IL-4급CD4+CD25+Treg점 CD4+림파세포백분비도명현고우대조조(P<0.05)。연구조화대조조중잉부외주혈급신생인제혈적CD4+CD25+Treg여IFN-γ、IFN-γ/IL-4정부상관(P<0.01,P<0.05),여 IL-4정정상관(P<0.01,P<0.05)。결론 HBV궁내감염시,잉부화신생인Th1형특이성반응강저이Th2형특이성반응증강,Th1/Th2간적세포면역실형가능시촉사 HBV궁내감염적궤제지일。HBV궁내감염여잉부외주혈화신생인제혈중 CD4+CD25+Treg 적분비수평승고유관,CD4+CD25+Treg수평적승고가능시발생 HBV궁내감염적고위인소지일。
Objective To investigate the effects of maternal blood and neonatal cord blood CD4+ CD25+ regulatory T(Treg)cells on Th1/Th2 balance and their relationships to hepatitis B virus(HBV)intrauterine infection.Methods According to the results of umbilical cord blood tes-ting,101 HBsAg-positive women with singleton full term pregnancy and normal liver function and their newborns were divided into two groups:study group(8 newborns with HBV intrauterine in-fection and their mothers)and control group(93 newborns without HBV intrauterine infection and their mothers).CD4+ CD2 5+ Treg cells were detected by flow cytometry and IFN-γand IL-4 levels were measured by ELISA.Results Compared with control group,maternal blood and neo-natal cord blood levels of IFN-γand IFN-γ/IL-4 significantly decreased but IL-4 levels and per-centage of CD4+ CD25+ Treg cells accounting for CD4+ lymphocytes significantly increased in study group(P<0.05).The percentage of CD4+ CD25+ Treg cells were negatively correlated with levels of IFN-γand IFN-γ/IL-4,but positively correlated with levels of IL-4(P<0.01 or P<0.05).Conclusion Specific Th1 response decreases but Specific Th2 response increases in HBV intrauterine infection.Th1/Th2 imbalance is one of the possible mechanisms responsible for HBV intrauterine infection.In addition,HBV intrauterine infection is correlated with the increase in maternal blood and neonatal cord blood CD4+ CD25+ Treg cells,which may be a major risk fac-tor for HBV intrauterine infection.