渝东北新发现HIV感染者首次CD4+T淋巴细胞检测分析

目的了解渝东北片区新发现HIV感染者CD4+和CD8+水平及相关情况,为早期对艾滋病(AIDS)患者开展抗病毒治疗提供依据。方法采用流式细胞术对采集的抗凝全血标本进行CD4+和CD8+检测,并进行统计分析。结果 2010—2013年能随访到的741例新发现HIV感染者首次CD4+T淋巴细胞绝对值均数为(302.86±216.99)个/μL,不同年度CD4+T淋巴细胞绝对值均值差异无统计学意义(F=0.63,P=0.59>0.05),不同年龄组HIV感染者首次CD4+T淋巴细胞绝对值均值差异有统计学意义(F=8.80,P=0.000001<0.01),且随年龄组增大CD4+T淋巴细胞绝对值均值有下降趋势。结论 1/3的HIV感染者发现时已经进入AIDS期。今后应加强宣传,早发现、早干预、早管理,以提高HIV感染者的生存质量。     

淮安市HIV/AIDS首次CD4~+T淋巴细胞检测分析

目的对淮安市新发现的HIV/AIDS首次CD4+T淋巴细胞计数进行分析,了解其免疫水平及疾病进展情况。方法收集淮安市2000-2014年报告的HIV/AIDS首次CD4+T淋巴细胞计数资料,分析其免疫水平,预测其疾病进程。结果 422例HIV/AIDS的首次CD4+T淋巴细胞均值为(322.81±245.81)个/μl,其中≤200个/μl占34.83%。年龄越大,首次CD4+T淋巴细胞计数均值越低(F=17.024,P0.001),未婚、离异或丧偶者首次CD4+T淋巴细胞计数均值比已婚有配偶者高(F=12.091,P0.001)。其他就诊者首次CD4+T淋巴细胞计数低于其他来源的HIV∕AIDS(χ2=83.076,P0.001)。结论新发现的感染者中有1/3已经进入艾滋病期,应加强宣传干预,扩大检测,早期发现感染者,加强感染者随访监测,及时提供抗病毒治疗,提高其生存质量。     

铜仁地区HIV感染者/病人CD4+T淋巴细胞检测结果分析

目的:了解铜仁地区HIV感染者/病人的CD4+T淋巴细胞的免疫水平,为及时进行抗病毒治疗提供依据。方法:采用流式细胞仪(FACS Calibar)对559例HIV感染者/病人进行CD4+T淋巴细胞绝对值检测。结果:559例HIV感染者的CD+4T淋巴细胞均值为303.46±212.90个/μl,CD4+T淋巴细胞计数≤200个/μl的占33.09%,201~350个/μl的占30.23%,351~500个/μl的占21.47%,>500个/μl的占15.21%。不同性别、感染途径的HIV感染者CD4+T淋巴细胞均值的差异无统计学意义,不同年龄的HIV感染者CD4+T淋巴细胞均值的差异有统计学意义。结论:铜仁地区HIV感染者的CD4+T淋巴细胞免疫水平普遍偏低,大部分感染者已进入艾滋病中、晚期。     

131例HIV感染者首次CD4~+T淋巴细胞检测结果分析

目的了解邗江区新发现艾滋病病毒感染者/艾滋病(HIV/AIDS)患者首次CD4~+T淋巴细胞水平,为艾滋病防治工作提供科学依据。方法调取2013年1月1日至2016年10月31日艾滋病综合防治系统HIV感染者及病人的首次CD4~+T淋巴细胞检测结果等资料进行分析。结果共检测131例131例HIV感染者,男性为主。感染途径主要为同性传播,首次CD4~+T淋巴细胞检测均值为(328±241.86)个/μL,不同年龄、不同文化程度感染者首次CD4~+T淋巴细胞检测结果差异有统计学意义(P<0.05)。结论邗江区HIV/AIDS晚发现情况较多,防治工作形势非常严峻,应进一步扩大HIV检测范围,最大程度做到早发现、早治疗、早控制HIV感染者。并及时对HIV感染者开展抗病毒治疗和随访,从而降低病死率和机会性感染率,延长生命,提高生存质量。     

昆明市2011年新发现HIV感染者首次CD4~+T淋巴细胞检测情况分析

目的了解昆明市2011年HIV感染者的首次CD4+T淋巴细胞检测情况,为HIV/AIDS防治工作提供科学依据。方法对昆明市2011年新发现的HIV感染者采取全血样本以三色荧光抗体进行标记,用流式细胞仪进行CD4+T淋巴细胞检测,统计分析检测数据。结果 1 028例检测对象首次CD4+T淋巴细胞均值为(379.30±242.62)个/μl,CD4+/CD8+比值为(0.36±0.25),CD4+/CD8+<1的占98.0%,CD4+T淋巴细胞水平随年龄增加而持续减少。不同样本来源CD4+T淋巴细胞差异有统计学意义(F=4.211,P<0.05),孕期和产前检查最高,为(438.88±245.09)个/μl,术前检查最低,为(287.57±208.51)个/μl。不同传播途径感染者CD4+T淋巴细胞差异有统计学意义(F=6.015,P<0.05),按最可能感染途径从高到低依次为:母婴传播、注射吸毒传播、异性传播和同性传播。结论 HIV感染者首次CD4+T淋巴细胞水平较低,HIV感染者发现较晚,但针对孕产妇、无偿献血人员和羁押人员的主动检测对HIV感染者的早期发现有积极的作用。建议加强高危人群尤其是经性传播危险人群的防治力度,推进PITC工作,扩大检测覆盖面,及早发现感染者,对HIV感染者/AIDS病人进行积极治疗。     

金华市178例新发现艾滋病病毒感染者首次CD4~+ T淋巴细胞检测结果分析

目的通过对金华市范围内新发现的178例HIV感染者进行首次CD4~+T淋巴细胞检测,了解其免疫状态及疾病进展情况,为HIV/AIDS防治工作提供科学依据。方法采用流式细胞术对采集的178份抗凝全血样本进行CD4~+T和CD8~+T淋巴细胞绝对值检测,并计算CD4~+/CD8~+比值。结果 178例HIV感染者首次CD4~+T淋巴细胞计数均值为(376.06±212.37)个/μl,其中≤200个/μl的占21.9%,201个/μl~350个/μl的占27.5%,351个/μl~500个/μl的占28.1%,500个/μl的占22.5%。CD4~+/CD8~+比值平均为0.31±0.19,CD4~+/CD8~+比值1的仅2例,CD4~+/CD8~+比值0.5的占87.6%。不同性别、不同年龄、不同感染途径CD4~+T淋巴细胞均数和CD4~+/CD8~+比值差异无统计学意义(P0.05)。结论金华市可随访到的77.5%的HIV感染者符合治疗标准,需要监测疾病过程并及时对其进行抗病毒治疗。     

三亚市HIV感染者/病人首次CD4+T淋巴细胞检测结果分析

目的通过对三亚市可追踪到的HIV感染者/病人进行首次的CD4+T淋巴细胞绝对值等的测定,来了解并估计其免疫水平及疾病的进展情况,并为及时进行抗病毒治疗提供依据。方法以四色荧光抗体进行标记,采用流式细胞仪(贝克曼库尔特)对131例HIV感染者/病人进行首次的CD4+T淋巴细胞绝对值等的检测,并计算CD4+/CD8+的比值,统计分析其测定值,并估计HIV感染者/病人进入艾滋病期的比例。结果 131例HIV感染者/病人的首次CD4+T淋巴细胞均值为(347.73±208.70)个/μl,CD4+/CD8+比值平均为(0.34±0.23),CD4+T淋巴细胞计数≤200个/μl的占22.1%,201～350个/μl的占29.8%,351～500个/μl的占25.2%,﹥500个/μl的占22.9%,CD4+/CD8+比值﹤1的占98.5%;不同性别、感染途径的HIV感染者/病人CD4+T淋巴细胞均值的差异无统计学意义,不同年龄的HIV感染者/病人CD4+T淋巴细胞均值的差异有统计学意义。结论按照我国发布的《国家免费艾滋病抗病毒治疗手册》(第2版)中的治疗标准,三亚市可追踪到的HIV感染者/病人的CD4+T淋巴细胞免疫水平普遍偏低,已有51.9%的HIV感染者进入了发病期,应进一步加强我市艾滋病预防与控制工作。     

2015～2017年沈阳市新发现HIV/AIDS 患者首次检测T淋巴细胞亚群分析

目的了解沈阳市新发现的艾滋病病毒感染者/艾滋病患者(HIV/AIDS)首次外周血T淋巴细胞亚群的检测情况,为艾滋病的防治工作提供依据。方法采集沈阳市2015～2017年新发现的923例HIV/AIDS患者全血样本,用流式细胞仪检测患者T淋巴细胞各亚群的绝对值。结果首次检测CD4+细胞计数平均值为(399.83±224.33)个/μl,44.42%的病例CD4+细胞≤350个/μl,其中CD4+细胞≤200个/μl占18.63%,已经进入艾滋病期。CD4+/CD8+比值为(0.31±0.18)。不同年份间的CD4+T淋巴细胞均值差异有统计学意义(P0.01)。CD4+T淋巴细胞均值随年龄增加逐步降低。不同性别和传播途径HIV抗体阳性者的CD4+T淋巴细胞均值和CD4+/CD8+比值,差异无统计学意义(P0.05)。结论沈阳市新发现的HIV抗体阳性者中有大量的长期感染者,建议重点关注高年龄组的检测与管理,扩大HIV监测范围,并及时完成首次CD4+T淋巴细胞检测。     

2016年长沙市497例新发现HIV抗体阳性者首次CD4~+ T淋巴细胞检测分析

目的了解长沙市2016年新发现HIV抗体阳性者的首次CD4+T淋巴细胞水平,指导临床开展早期抗病毒治疗。方法采用流式细胞仪对2016年长沙市新发现的497例HIV抗体阳性者进行首次T淋巴细胞计数。结果 497例HIV抗体阳性者中,男性占88.3%,女性占11.7%,年龄为17岁~85岁,CD4+T淋巴细胞计数均值为(363.8±185.9)个/μl,其中≤200个/μl的占18.1%,201个/μl~350个/μl的占30.4%。不同性别HIV抗体阳性者的CD4+T淋巴细胞水平比较,差异无统计学意义(P0.05),而不同年龄和传播途径对CD4+T淋巴细胞水平有影响。结论长沙市新发现HIV抗体阳性者的首次CD4+T淋巴细胞水平较低,18.1%的病例已进入艾滋病期,接近50%的人需要立即进行抗病毒治疗,应进一步扩大监测范围,加强早干预、早发现、早治疗工作,提高感染者生存质量。     

117例新确证HIV感染者首次CD4+T淋巴细胞检测结果分析

目的了解郑州市新确证艾滋病病毒(HIV)感染者细胞免疫状况,以了解该人群的病程进展情况。方法应用流式细胞仪对117例新确证HIV感染者抽取外周血进行CD4~+T、CD8~+T细胞绝对值检测。结果 117例HIV感染者的CD4~+T淋细胞细胞平均值为(384.32±223.50)个/ul,CD4~+淋巴细胞计数200个/ul 30例(25.64%),200～350个/ul 27例(23.08%),351～500个/ul 29例(24.79%),500个/ul 31例(26.50%)。结论郑州市目前的HIV感染者主要是由性途径感染引起,HIV感染者的CD4~+T淋细胞普遍偏低,应进一步扩大HIV检测范围,最大程度的做到早发现早治疗。     

Distribution of naïve (CD45RA+) and memory (CD45RO+) T-cells in HIV-infected Puerto Rican population

HIV infection usually results in a gradual deterioration of the immune system. It is evident that early recognition of progression markers during HIV infection from asymptomatic to symptomatic state is needed. In the present cross-sectional study, peripheral blood lymphocytes from 63 HIV-infected Puerto Rican individuals were analyzed by two-color flow cytometry to study the co-expression CD45RA and CD45RO on both CD4+ and CD8+ T-cells and its correlation with age, gender, CD4 count, CD4:CD8 ratio, anti-retroviral therapy, clinical status, and viral load. Measurement of T-cell subsets in these patients showed an excessive increase of CD3+CD8+, CD8+CD45RA+, and CD8+CD45RO+ T-cells as disease progresses. In contrast, it was also observed a significant decrease in CD3+CD4+, CD4+CD45RA+ and CD4+CD45RO+ T-cells. The distribution of CD8+CD45RA+ T-cells did not change significantly between HIV and AIDS cases suggesting that this T-cell subset is not a good progression marker. Interestingly, CD4+CD45RA+ T-cells were significantly difference between genders, and CD44+CD45RA+ and CD8+CD45RO+ T-cells were influenced by age. In conclusion, the distribution of na?ve/memory CD4+ T-cells and memory CD8+ T-cells significantly correlate with HIV infection in disease progression. It is also important to mention that these T-cell subpopulations may be influenced by both gender and age. Overall, these results suggest that a loss in the generation of new immune response and function may be occurring during disease progression. This study open new windows of understanding that will be beneficial for future studies on immunopathogenesis, diagnosis, prognosis, and treatment monitoring for HIV/AIDS.     

Underestimation of Mycobacterium tuberculosis infection in HIV-infected subjects using reactivity to tuberculin and anergy panel

BACKGROUND: This study aimed to evaluate purified protein derivative (PPD) reactivity and its interrelationship with anergy panel and CD4+ lymphocytes in HIV-infected subjects as compared to PPD reactivity in HIV-uninfected individuals in a tuberculosis endemic and high Bacillus Calmette-Guérin (BCG) coverage environment. METHODS: Clients of four Mexico City HIV detection centres were screened for HIV-1 antibodies (ELISA or haemagglutination, Western Blot); reactivity to PPD (Mantoux PPD, 5TU RT-23), Candida (1:1000, 0.1 ml), and tetanus toxoid (10Lf, 0.1 ml); and CD4+ T cells. Active tuberculosis was excluded. Informed consent was obtained. RESULTS: From 5130 clients 1168 subjects were enrolled; of these 801 (68.6%) were HIV positive. Reactivity to PPD among HIV-positive subjects was found in 174 (22%), 261 (32.6%), and 296 (37%), at PPD cutoff levels of > or =10 mm, > or =5 mm, and > or =2 mm as compared to 224 (61%) of 367 HIV-negative individuals' reactors to PPD (> or =10 mm) (P < 0.001). After exclusion of anergic individuals using two cutoff levels for cutaneous allergens (< or =2 mm and < or =5 mm), PPD reactivity between HIV-infected and uninfected individuals continued to be significantly different. Only HIV-infected individuals with CD4+ T cells > or =500 cells/mm3 had similar reactivity to PPD as HIV-uninfected individuals. Variables associated with PPD reactivity were CD4+ T cell counts, BCG scar, HIV infection and age. CONCLUSIONS: PPD reactivity was useful to diagnose tuberculosis infection only among HIV-infected individuals with CD4+ counts > or =500 cells/mm3. Among individuals with lower counts, lowering cutoff levels or using anergy panel did not permit comparable reactivity as that observed among HIV-uninfected individuals.     

艾滋病患者合并巨细胞病毒感染状况研究

目的了解艾滋病患者合并巨细胞病毒感染状况,及其对艾滋病疾病进展的影响。方法以278例在某院住院的艾滋病确诊患者为研究对象,采集外周血,分离血浆,通过人巨细胞病毒核酸定量检测(PCR-荧光法)检测巨细胞病毒DNA。同时检测CD4+T淋巴细胞和血浆病毒载量的水平。结果在278例艾滋病患者中合并巨细胞病毒感染者60例,感染率为21.58%,其中75%的合并巨细胞病毒感染的患者主要存在于CD4+T淋巴细胞低于50/μl的艾滋病感染者中。合并巨细胞病毒感染者的CD4+T淋巴细胞低于HIV单一感染者,而病毒载量则呈相反趋势,两者间差异有统计学意义(P﹤0.01)。结论对艾滋病患者的管理,在监测CD4+T淋巴细胞的同时,应加强监测巨细胞病毒的混合感染,并可结合CD4+T淋巴细胞计数对患者进行预防性服药,降低混合感染造成的死亡。     

347例HIV/AIDS患者外周血免疫细胞表达水平的临床意义

目的 分析HIV/AIDS患者外周血免疫细胞的表达水平随CD4+淋巴细胞数量、白蛋白含量、HIV-RNA载量以及合并感染的变化情况,探讨其检测的临床意义。方法 回顾性分析347例HIV/AIDS患者外周血的临床资料,对CD4+、CD8+、B淋巴细胞、自然杀伤细胞(NK)的绝对数、白蛋白(ALB)含量、HIV-RNA载量以及梅毒螺旋体抗体(TP)、乙型肝炎病毒(HBV)和丙型肝炎病毒(HCV)抗体的检测结果进行统计学分析。结果 CD4+含量降低组的HIV/AIDS患者CD8+、B、NK细胞的表达水平低于正常组患者(P<0.01),CD8+、NK、B细胞的含量与CD4+数量呈正相关(P<0.05);白蛋白含量降低组的HIV/AIDS患者CD4+、CD8+、B、NK细胞的表达水平低于正常组的患者(P<0.01),白蛋白含量与CD4+、CD8+、B、NK细胞的数量呈正相关(P<0.01);HIV-RNA阳性患者CD4+、CD8+、B、NK细胞的表达水平低于阴性患者(P<0.01),合并感染率为27.9%,高于阴性患者22.5%(P<0.05),HIV-RNA载量与CD4+、B淋巴细胞含量呈负相关(P<0.05)。结论 CD8+、B、NK细胞的表达水平以及合并感染率与疾病的进展密切相关,对于新发现的HIV/AIDS患者,同时检测血清中TP/HBV/HCV抗体,能准确地掌握合并感染情况,有利于实施个体化治疗方案。     

中国HCV/HIV合并感染者淋巴细胞CD25表达和血清IP-10的研究

目的研究淋巴细胞表面受体CD25和血清干扰素诱导蛋白10（IP-10）,在丙型肝炎病毒（HCV）单纯感染,人类免疫缺陷病毒（HIV）单纯感染和HCV/HIV合并感染中的表达及意义。方法采用流式细胞术,检测HCV感染组（n=21）、HIV感染组（n=14）、HCV/HIV感染组（n=28）及正常对照组（n=30）,T淋巴细胞表面CD25的表达,ELISA方法检测血清IP-10含量。结果血清IP-10水平在HCV感染组、HIV感染组和HCV/HIV合并感染组都明显升高,HIV感染组及HCV/HIV合并感染组CD4＋T细胞表面CD25表达显著降低（P〈0.01）;HCV感染组CD4＋T细胞表面CD25表达轻度升高,但差异无统计学意义。结论中国HCV/HIV合并感染与CD4＋T细胞CD25表达及血清IP-10水平密切相关。     

HIV感染者抗病毒治疗前后CD3+CD4+T及NK/NKT细胞变化的临床意义

目的 了解HIV感染者抗病毒治疗前后不同时期CD3+CD4+T和NK/NKT细胞的变化,探讨CD3+CD4+T、NK/NKT细胞作为抗病毒治疗后评价免疫状况指标的临床意义。方法 采用重复测量资料方差分析对40个HIV 感染者抗病毒治疗前、治疗后6个月和12个月的CD3+CD4+T、NK、NKT细胞绝对计数差异进行比较,分析治疗前后CD3+CD4+T细胞计数与NK、NKT细胞计数的相关性。结果 感染者不同时间测得的CD3+CD4+T细胞数量差异有统计学意义（F =68.16,P <0.001）,两两比较差异均有统计学意义（P <0.001）。NK和NKT细胞计数三次测量结果差异有统计学意义（F =10.701,P <0.001;F =44.177,P <0.001）,两两比较发现治疗前分别和治疗后6个月、12个月的绝对计数差异有统计学意义（P <0.001）;CD3+CD4+T与NK、NKT细胞绝对计数的相关性不具有统计学意义。结论 经过1年抗病毒治疗后,CD3+CD4+T淋巴细胞有明显的提高,提示患者免疫状况显著改善。NK和NKT细胞在前6个月增加明显,6个月到12个月期间无明显增加,说明NK和NKT细胞在早期抗病毒中同样发挥了重要作用。NK/NKT细胞的变化可以评价患者治疗后天然免疫状况,但与获得性免疫的CD3+CD4+T淋巴细胞变化没有相关性。     

A mathematical model and CD4+ lymphocyte dynamics in HIV infection.

The paper presents a model of CD4 + lymphocyte dynamics in HIV-infected persons. The model incorporates a feedback mechanism regulating the production of T lymphocytes and simulates the dynamics of CD8 + lymphocytes, whose production is assumed to be closely linked to that of CD4 + cells. Because CD4 + lymphocyte counts are a good prognostic indicator of HIV infection, the model was used to simulate such therapeutic interventions as chemotherapy and active and passive immunization. The model also simulated the therapeutic administration of anti-CD8 antibodies; this intervention was assumed to activate T-cell production by activating a feedback mechanism blocked by the high numbers of CD8 + lymphocytes present in HIV-infected persons. The character and implications of the model are discussed in the context of other mathematical models used in HIV infection.     

流行性出血热T淋巴细胞亚群及DP细胞异常改变

目的 研究流行性出血热（EHF）患者T淋巴细胞改变特点,探讨其发病机制,提高对流行性出血热的早期诊断水平。方法 收集医院30例确诊为流行性出血热患者和50名健康献血员的抗凝血,用特异性荧光抗体标记,通过流式细胞仪检测其T淋巴细胞亚群变化,对其中25例恢复后的流行性出血热患者复查淋巴细胞亚群。结果 与正常人相比,流行性出血热患者的CD^4＋T淋巴细胞数量减少,CD8^＋T淋巴细胞数量增多,CD4^＋CD8^＋双阳性细胞（DP细胞）数量增多;恢复期EHF患者的T4、T8和DP细胞恢复正常;与HIV、EBV、及CMV感染者相比,EHF患者的DP细胞明显升高。结论 EFH急性期患者的CD4^＋T淋巴细胞数量降低,CD8^＋T淋巴细胞数量增多,DP细胞数量增多,但可逆转;T4、T8细胞和DP细胞检测有助于早期诊断EHF患者。     

CD4 cell counts in adults with newly diagnosed HIV infection in Barbados.

OBJECTIVE: To evaluate the absolute CD4 cell counts of all the newly diagnosed HIV-infected persons who presented at the Ladymeade Reference Unit (LRU), which serves as the national HIV/AIDS referral and treatment center for the country of Barbados. DESIGN AND METHODS: The study group was comprised of HIV-infected adults who had been diagnosed with HIV infection and referred to the LRU between January and December 2002. All the patients referred to the LRU had a CD4 cell count done at their first visit to the unit, as part of the routine workup to assess their disease status and need for antiretroviral therapy. RESULTS: Of the 106 newly diagnosed adults, 62 of them (58.5%) were males, who had a median age at presentation of 40 years; the other 44 of them (41.5%) were females, and their median age at presentation was 36 years. Nearly one-fifth (18.2%) of the females were aged 16-25 years, whereas only 8.1% of the males were in this age group. The majority (57.6%) of the study group were diagnosed because they presented with an HIV/AIDS-related illness. Overall, the median CD4 cell count at the time of diagnosis was 183/microL; 52 of 103 adults (50.5%) with a newly diagnosed HIV infection had a CD4 cell count that was < 200. Among males, the median CD4 cell count was 161/microL, and 32 (53.3%) of 60 males had CD4 cell counts < 200. In contrast, among females, the median CD4 cell count was 223, and 20 (46.5%) of 43 females had a CD4 cell count that was < 200/microL. However, this difference in the proportion of males and females with a CD4 cell count less than 200/microL was not statistically significant (P = 0.63). CONCLUSIONS: At the time of HIV diagnosis, over one-half of the adults had an initial CD4 cell count that was consistent with relatively advanced disease. Proportionally more women than men presented at a younger age, and proportionally more women than men presented in the early stages of the disease. These patterns indicate a clear need for enhanced educational efforts regarding the importance of HIV testing for at-risk individuals across Barbados. This testing could improve efforts to reduce transmission as well as the prognosis for patients who receive antiretroviral therapy.     

HCV感染者和HCV/HIV合并感染者免疫调节

目的　探讨我国单纯丙型肝炎病毒(HCV)感染者和HCV/HIV合并感染者免疫应答的相关机制。方法　分离人外周血单个核细胞;流式细胞仪(FACS)检测CD4 + T细胞和CD4 + CD2 5 + T细胞表达水平。结果　CD4 +CD2 5 + T细胞占外周血单个核细胞中CD4 + T细胞比例(%CD4 + CD2 5 + ) ,HCV感染组明显高于健康对照组(19. 2 %>13 8% ,P <0 . 0 5 ) ,HCV/HIV合并感染组明显低于对照组(6. 9% <13. 8% ,P <0 .0 0 1) ,更明显低于HCV感染组(P <0 . 0 0 1)。结论　HCV感染者体内CD4 + CD2 5 + T细胞增殖明显,提示CD4 + CD2 5 + T细胞在HCV慢性感染中发挥免疫调节作用。HCV/HIV合并感染时,CD4 + CD2 5 + T细胞受损,从而影响免疫调节功能。