Association between the level of CD4^+T lymphocyte microRNA-155 and coronary artery disease in patients with unstable angina pectoris

Objective To study the association between the expression of microRNA-155(miRNA-155)in peripheral blood CD4^+T lymphocytes and the level of semrn interferon-7(IFN-7)concentration and the severity of coronary artery disease (CAD).Methods After coronary angiography,252patients with suspected unstable angina pectoris (UAP)were divided into the UAP group (128patients with CAD confirmed by angiography)and the control group (124patients without CAD confirmed by angiography).Fresh peripheral blood was extracted 16-24h before coronary angiography,CD4^+T lymphocytes was tested using immunomagnetic beads,the expression ofmiRNA-155was tested using quantitative PCR and the expression of IFN-7was tested using enzyme-linked immunosorbent assay (ELISA).According to the results of angiography,Gensini score of coronary artery lesions was analyzed.Furthermore,we also analysis the association between the level of miRNA-155in peripheral blood CD4^+T lymphocytes,the level of serum IFN-γand Gensini score of coronary lesion.Results The levels ofmiRNA-155(0.49±0.08vs.0.23±0.09)and IFN-7(227.58±26.01vs.141.23±17.89)in the UAP group were significantly higher than that of the control group,the difference was statistically significant.The level of miRNA-155and IFN-γwere positively correlated with Gensini score of CAD (r =0.534,r =0.713,respectively,all P <0.05).The level of miRNA-155was positively correlated with the level of IFN-γ,(r =0.686,P <0.05).Conclusions The level of miRNA-155in peripheral blood CD4^+T lymphocytes and the level of IFN-γ are closely correlated with the severity of CAD.

CD4 T-Lymphocytes Count in HIV-<i>Toxoplasma gondii</i>Co-Infected Pregnant Women Undergoing a Prevention of Mother-to-Child Transmission Program

Toxoplasma gondii (T. gondii) is a parasite responsible of toxoplasmosis, a disease often asymptomatic but with serious consequences in pregnant women and immunocompromised subjects. Objective: This study aimed to investigate the impact of T. gondii infection on CD4+ T lymphocytes count in HIV-infected pregnant women. Methods: This was a cross-sectional study of pregnant women co-infected by HIV and T. gondii. The study was conducted from January to July 2016 at the Prevention of Mother-to-Child Transmission of HIV (PMTCT) sites in the Health District of Lacs in Togo. Diagnosis of HIV was performed by immuno-chromatographic methods with Determine TM HIV-1/2 and immuno-filtration with Tri-Dot HIV-1 and 2 kits. Presence of anti-toxoplasmic IgG and IgM antibodies was established via enzyme immunoassay using ELISA-BIOREX&reg;kit. Flow cytometry was used to count CD4+ T lymphocytes. Results: Our study found that of the 4599 pregnant women, 111 (2.41%) were HIV-positive. Among them, 109 (98.20%) were infected by HIV-1 and 2 (1.98%) by HIV-2. Antibodies against T. gondii were detected in 5.36% (IgM), 25% (IgG) and 3.57% (both IgM and IgG) of HIV 56 infected women. There was no significant difference between CD4 cell count in HIV (+)/T. gondii IgM (-)/IgG (-) infected pregnant women (378.8 ± 222.8 cell//μl) compared to HIV (+)/T. gondii/IgM (+) (457.3 ± 183.3 cell//μl), HIV (+)/T. gondii IgG (+) (419.4 ± 287.3 cell//μl) and HIV (+)/T. gondii IgM/IgG (+) (480.5 ± 252.4 cell/μl). Conclusion: This study showed that intracellular parasite T. gondii did not alter CD4+ T lymphocytes count in HIV/T. gondii co-infected pregnant women.

Viral Characteristic of HIV Infected Patients Naïf of Anti-Retroviral Therapy with CD4+ T Lymphocytes Rate Greater than 350 per Microliter of Blood in LoméTogo

Objective: To evaluate the virological status of ineligible HIV patients for anti-retroviral therapy based on the criterion of CD4+ T lymphocytes rate over than 350/μl of blood. Method: This is a prospective study which was conducted from November 2011 to July 2012 in the tropical and infectious disease department of CHU Sylvanus Olympio of Lomé. All HIV-1 infected patients whose CD4+ T lymphocytes rate was ≥350/μl of blood were retained. The count of CD4+ T lymphocytes was made by cytometer FACSCalibur? flow of BD biosciences and the determination of viral load was achieved by NASBA laboratory method of Biomérieux. Results: We have recruited 102 PLWHA aged between 19 and 58 years with a median of 35 years. Biologically, 102 patients had a T-CD4 rate between 355 and 432/μl of blood. The determination of viral load showed a very high viral replication more than 10,000 copies/ml among all patients and 28 (27.5%) patients had a viral load > 100,000 copies/ml of blood. Conclusion: Our results argue for a reconsideration of the criteria for starting antiretroviral therapy in Togo by including virological data if necessary in patients with T-CD4 rate below 500/μl of blood.

Role of CD4+ and CD8+ T Lymphocyte in the Onset of Stroke in People Living with HIV in Pointe-Noire

Objective: To determine the role of CD4+ and CD8+ T lymphocytes in the onset of stroke in people living with HIV. Methodology: This was a descriptive, cross-sectional study from January to July 2019, in the neurology department of loandjili general hospital, including any patient hospitalized for a first episode of stroke confirmed by brain scan. The study variables were: age, sex, CRP value, serum T cell CD4+, CD8+. The statistical analysis was carried out using the EPI info 7 software. Results: Twenty stroke patients were included. The relative frequency of HIV was 20%. The risk factors were potentiated by immunosuppression of CD4+ T cells. Sixty percent (60%) of the patients had a CD4+ count < 200/mm3 and the mean CD4+ count was ±191/mm3. Stroke was the predominant mechanism of injury with a frequency of 70%, the only injury mechanism of stroke in patients with CD8+ T cell count > 800/mm3 (p = 0.04). Conclusion: Risk factors are potentiated by TCD4+ lymphocyte immunosupression, also CD8+ lymphocytes of immune system activation marker are a cardiovascular risk factor for living people with HIV.

Autoimmune pancreatitis characterized by predominant CD8+ Tlymphocyte infiltration

Autoimmune pancreatitis(AIP)is a rare form of pan-creatitis characterized by prominent lymphocyte inf iltration and pancreatic f ibrosis resulting in organ dysfunc-tion.The pathogenesis and pathology of AIP remain unknown.A 64-year-old Chinese man presented with symptoms and signs of bile duct obstruction diffuse enlargement of the head of pancreas,elevated IgG levels,and negative autoimmune antibody responses.A pylorus-preserving pancreatoduodenectomy was per-formed and a pancreatic tumor was suspected.Howev-er,periductal lymphoplasmacytic inf iltration and f ibrosis were found in the head of pancreas and nearby organs instead of tumor cells.Four months after surgery,the patient was readmitted because of reoccurrence ofsevere jaundice and sustained abdominal distension.Prednisone 30 mg/d was administered orally as an AIP was suspected.One and a half months later,the symp-toms of the patient disappeared,and globulin,amino-transferase and bilirubin levels decreased signif icantly.Over a 9-mo follow-up period,the dose of prednisone was gradually decreased to 10 mg/d and the patient remained in good condition.We further demonstrated dominant CD3+/CD8+ populations,CD20+ cells and a few CD4+ cells in the pancreatic parenchyma,duo-denum and gallbladder wall by immunohistochemical assay.This AIP case presented with signif icant CD8+ T lymphocyte inf iltration in the pancreas and extra-pan-creatic lesions,indicating that this cell population may be more important in mediating AIP pathogenesis than previously known and that AIP might be a poorly defined autoimmune disease with heterogeneous pathogenesis.

脓毒症性急性肾损伤患者CD_4^+ T淋巴细胞内三磷酸腺苷水平变化及其与肾功能转归的关系

目的探讨CD_4^+T淋巴细胞内三磷酸腺苷(CD_4^+T cell-iATP)水平预测脓毒症并发急性肾损伤(AKI)患者预后的价值。方法前瞻性选择2013年7月—2014年12月于丽水市中心医院ICU、感染科及肾内科住院的脓毒症并发AKI患者69例为研究对象,分别于人组0、48、96h检测患者CD_4^+T cell-iATP水平。根据肾功能临床转归情况将患者分为肾功能完全恢复组(18例)、肾功能部分恢复组(38例)、依赖透析组(4例)和死亡组(9例)。结果各组eGFR、功能衰竭脏器数量、AKI分期及0、48h CD_4^+T cell-iATP水平比较,差异有统计学意义(P<0.05)。多分类Logistic回归分析结果显示,相对于预后不良(依赖透析或死亡),eGFR、功能衰竭脏器数量和48h CD_4^+T cell-iATP水平为肾功能完全恢复、肾功能部分恢复的影响因素(P<0.05)。ROC曲线分析显示,48h CD_4^+T cell-iATP水平预测脓毒症并发AKI患者预后的ROC曲线下面积为0.926(P<0.01),取48h CD_4^+T cell-iATP临界点为344.2μg/L时,灵敏度为92.3%,特异度为87.5%。结论 CD_4^+T cell-iATP水平低的脓毒症患者肾功能恢复良好,脓毒症患者早期CD_4^+T cell-iATP水平是肾功能转归的预测指标。

日本血吸虫慢性感染致CD_4^+ T细胞凋亡的分子基础

目的 立足于全基因水平考察日本血吸虫慢性感染小鼠CD+4T细胞的凋亡相关基因的变化。方法 采用三色流式细胞术结合高密度寡核苷酸芯片 (Affemetrix芯片 ) ,对日本血吸虫感染 13周的小鼠脾脏中的CD+4T细胞进行凋亡观察及基因转录分析 ,获得凋亡相关基因的表达图谱。结果 日本血吸虫慢性感染小鼠CD+4T细胞的凋亡率均明显高于正常小鼠 (P <0 0 1) ;感染小鼠的CD+4T细胞中有 2 5个凋亡相关基因与正常小鼠相比有显著性差异 ,包括凋亡促进基因—生长抑制和DNA损伤 -GADD家族和肿瘤坏死因子α诱导蛋白 3,凋亡抑制基因—IAP等。结论 日本血吸虫慢性感染小鼠CD+4T细胞的凋亡可能是导致宿主免疫下调的原因之一。凋亡通路中存在复杂的凋亡促进基因和抑制基因的相互作用 ,其中肿瘤坏死因子α诱导蛋白 3可能是日本血吸虫感染诱导CD+4T细胞凋亡的特征性因子。

肺癌患者胸腔积液及外周血CD_4^+CD_(25)^+T细胞、Foxp3基因表达及意义

目的探讨CD4+CD2+5T细胞及Foxp3基因在肺癌发生、发展中的作用及机制。方法流式细胞仪检测32例肺癌合并胸腔积液患者外周血、胸腔积液及30例无胸腔积液肺癌患者外周血、胸腔冲洗液中CD4+CD2+5T细胞水平,RT-PCR法检测特异性转录因子Foxp3基因在胸腔积液及外周血中的表达。结果肺癌合并胸腔积液患者胸腔积液中CD4+CD25+T细胞水平显著高于无胸腔积液患者胸腔冲洗液及外周血;Foxp3基因在肺癌患者外周血和胸腔积液中呈高表达。结论肺癌患者外周血和胸腔积液中增高的CD4+CD2+5T细胞主要是CD4+CD2+5调节性T细胞。CD4+CD25+调节性T细胞可促进肺癌的进一步恶化,其机制可能是抑制肿瘤免疫。

CD4^+T淋巴细胞三磷酸腺苷检测在预测肝移植术后感染中的作用

目的探讨外周血CD4+T淋巴细胞内三磷酸腺苷(ATP)水平与肝移植术后感染之间的关系。方法采集肝移植术后患者外周血样本142例次,应用ImmuKnow免疫细胞功能检测试剂盒检测ATP。根据患者肝移植术后是否发生感染及不同的免疫应答状态分组,分析CD4+T淋巴细胞ATP水平与肝移植术后感染的关系。结果根据患者临床状态将患者分为感染组和非感染组,其ATP值分别为236.0(41.0~512.0)μg/L和371.5(9.0~1000.0)μg/L,两组比较差异有统计学意义(P=0.001)。根据患者外周血CD4+T淋巴细胞ATP水平将患者分为低免疫应答组、正常免疫应答组和高免疫应答组,其肝移植术后感染的发生率分别为25.0%、13.6%和0,各组间移植术后感染的发生率比较差异有统计学意义(P=0.003)。结论外周血CD4+T淋巴细胞ATP值与肝移植术后感染间具有良好的相关性,有利于指导临床治疗。

HIV感染者早期抗病毒治疗CD_4^+T淋巴细胞水平变化研究

目的了解新疆维吾尔自治区伊犁州HIV感染者早期高效抗反转录病毒治疗后CD_4^+T淋巴细胞水平的变化情况及相关影响因素。方法选取伊犁州2008年1月-2012年12月首次参加抗病毒治疗的HIV感染者(基线CD_4^+T淋巴细胞计数>350个/μl)为研究对象,收集其基线情况及治疗后各随访时点(6个月、12个月、18个月、24个月)的相关资料并进行统计分析。结果共收集311例HIV感染者信息,基线CD_4^+T淋巴细胞计数的M(P_(25),P_(75))为440(391,525)个/μl;治疗6个月与基线、12个月与6个月、18个月与12个月的CD_4^+T淋巴细胞计数比较,差异均有统计学意义(Z=-6.6,P<0.01;Z=-3.6,P<0.01;Z=-2.5,P=0.01),6、8、12、24个月时的CD_4^+T淋巴细胞计数与基线相比分别上升了84、123、143、140个/μl;CD_4^+T淋巴细胞计数有随时间变化的趋势(F=31.56,P<0.01),不同基线CD_4^+T淋巴细胞分组治疗后CD_4^+T淋巴细胞计数差异有统计学意义(F=20.54,P<0.01),>500个/μl组治疗后CD_4^+T淋巴细胞计数增长量低于351~500个/μl组。结论早期抗病毒治疗后CD_4^+T淋巴细胞计数在前6个月升高幅度较大,随后升高的幅度逐渐缓慢趋于稳定;基线CD_4^+T淋巴细胞计数越高,免疫功能恢复越好。

Changes of CD4^+CD25^+ Regulatory T Cells in Patients with Acute Coronary Syndrome and the Effects of Atorvastatin

The function of CD4＋CD25＋ regulatory T lymphocytes （Treg） in patients with acute coronary syndrome （ACS） and the effects of atorvastatin were investigated. Forty-eight patients with ACS were randomly divided into two groups： group C receiving conventional therapy （n=24）, and group C＋A receiving conventional therapy＋atorvastatin （10 mg/day, n=24）. T lymphocytes from ACS patients （before and 2 weeks after the treatment） or 18 healthy subjects were separated and the flow cytometry was used to measure the percentage of Treg. The inhibitory ability of Treg on effector T cells was determined by mixed lymphocyte reaction （MLR）. ELISA was used to measure the serum levels of cytokines （IL-10, TGF-β1 and IFN-γ） before and after treatment. The results showed that as compared with normal control group, Treg percentage was decreased significantly （P〈0.01）, the inhibitory ability of Treg on the T lymphocytes proliferation was reduced （P〈0.01）, IFN-γ levels were increased and IL-10 and TGF-β1 levels were lowered in ACS patients. After treatment with atorvastatin, Treg percentage and the inhibitory ability of Treg on T lymphocytes proliferation were significantly increased in ACS patients. Serum IFN-γ was decreased significantly, while IL-10 and TGF-β1 were elevated significantly as compared with the non-atorvastatin group. The number of Treg was positively correlated with serum TGF-β1, but negatively with serum IFN-γ and CRP. It was concluded that ACS was associated with decreased number and defected function of Treg, which may play an important role in initiating immune-inflammatory response in ACS. The inhibitory effects of atorvastatin on inflammation in ACS may be due to its beneficial effects on Treg and restoration of immune homeostasis.

Super-resolution immunohistochemistry study on CD4 and CD8 cells and the relation to macrophages in human cochlea

Recently, the human cochlea has been shown to contain numerous resident macrophages under steady-state. The macrophages accumulate in the stria vascularis, among the auditory nerves, and are also spotted in the human organ of Corti. These macrophages may process antigens reaching the cochlea by invasion of pathogens and insertion of CI electrode. Thus, macrophages execute an innate, and possibly an adaptive immunity. Here, we describe the molecular markers CD4 and CD8 of T cells, macrophage markers MHCⅡ and CD11b, as well as the microglial markers TEME119 and P2Y12, in the human cochlea. Immunohistochemistry and the advantageous super-resolution structured illumination microscopy(SR-SIM) were used in the study. CD4^+ and CD8^+ cells were found in the human cochleae. They were seen in the modiolus in a substantial number adjacent to the vessels, in the peripheral region of the Rosenthal's canal, and occasionally in the spiral ligament. While there are a surprisingly large number of macrophages in the stria vascularis as well as between the auditory neurons,CD4^+ and CD8^+ cells are hardly seen in these areas, and neither are seen in the organ of Corti. In the modiolus,macrophages, CD4^+ and CD8^+ cells appeared often in clusters. Interaction between these different cells was easily observed with SR-SIM, showing closely placed cell bodies, and the processes from macrophages reaching out and touching the lymphocytes. Otherwise the CD4^+ and CD8^+ cells in human cochlear tissue are discretely scattered. The possible roles of these immune cells are speculated.

Methylprednisolone inhibits activated CD4^+ T cell survival promoted by toll-like receptor ligands

BACKGROUND: Methylprednisolone (MP) can affect the survival of CD4(+) T lymphocytes and plays an important role in adaptive immune responses; however, its mechanism of action is not clear. Recent studies have shown that toll-like receptors (TLRs) on CD4(+) T cells can directly modulate adaptive immune responses by affecting the survival and proliferation of activated CD4(+) T cells. This study aimed to investigate the relationship between MP, TLRs and activated CD4(+) T cells. METHODS: We separated and purified CD4(+) T cells from mice, activated them in vitro, and co-cultured them with TLR ligands, MP or inhibitors of nuclear factor-kappa B (NF-kappa B) and activator protein 1 (AP-1). We then assessed CD4(+) T cell survival and proliferation and the expression of NF-kappa B and AP-1. RESULTS: Activated CD4(+) T cells showed increased TLR-3 and TLR-9 mRNA expression, but polyinosinic-polycytidylic acid (poly I:C) and MP had no effect on the expression of these mRNAs. Still, poly I:C and CpG oligodeoxynucleotides (CpG DNA) increased the survival of activated CD4(+) T cells, whereas MP reduced the survival of activated CD4(+) T cells and could inhibit the survival effects of poly I:C and CpG DNA. The NF-kappa B essential modifier-binding domain (NBD) inhibited the survival of activated CD4(+) T cells induced by poly I:C and CpG DNA, but the AP-1 inhibitor crucumin did not have the same effect. The increased expression of NF-kappa B induced by poly I:C and CpG DNA in activated CD4(+) T cells could be inhibited by MP, but the same was not true for the increased expression of AP-1 induced by poly I:C and CpG DNA. Finally, the proliferation of activated CD4(+) T cells was not affected by poly I:C or MP. CONCLUSION: The survival of activated CD4(+) T cells is promoted by TLR ligands, but this effect is inhibited by MP.

Increase of CD4^+CD25^+ T cells in Smad3^(-/-) mice

AIM： To investigate the changes of lymphocyte subpopulations, especially CD4^＋CD25^ T regulatory cells in Smad3^-/- mice. METHODS： Hematological changes and changes of lymphocyte subpopulations were detected in Smad3＂/- mice using cell counter and flow cytometry, respectively, and compared to their littermate controls. RESULTS： The numbers of neutrophils and lymphocytes in peripheral blood were significantly increased in Smad3^-/- mice compared to littermate controls. CD19^＋ expressing cells in blood and spleen, and CD8^＋ T cells in thymus were all markedly decreased in Smad3^-/- mice. More important, Smad3^-/- mice had an increased population of CD4^＋CD25^＋ T cells in peripheral lymphoid tissues, including thymus, spleen, and lymph nodes. CONCLUSION： These observations suggest that the changes of lymphocyte subpopulations might play a role in susceptibility to inflammation of Smad3^-/- mice.

Poor CD4 count is a predictor of untreated depression in human immunodeficiency virus-positive African-Americans

AIM: To determine if efforts to improve antiretroviral therapy(ART) adherence minimizes the negative impact of depression on human immunodeficiency virus(HIV) outcomes. METHODS: A cross-sectional study of a clinic-based cohort of 158 HIV seropositive(HIV+) African Americans screened for major depressive disorder(MDD) in 2012. CD4 T lymphocyte(CD4+) counts were obtained from these individuals. Self-report on adherence to ART was determined from questionnaire administered during clinic visits. The primary outcome measure was conditional odds of having a poorer CD4+ count(< 350 cells/mm3). Association between CD4+ count and antidepressant-treated or untreated MDD subjects was examined controlling for self-reported adherence and other potential confounders. RESULTS: Out of 147 individuals with available CD4+ T lymphocyte data, 31% had CD4+ count < 350 cells/mm^3 and 28% reported poor ART adherence. As expected the group with > 350 cells/mm^3 CD4+ T lymphocyte endorsed significantly greater ART adherence compared to the group with < 350 cells/mm3 CD4+ T lymphocyte count(P < 0.004). Prevalence of MDD was 39.5% and 66% of individuals with MDD took antidepressants. Poor CD4+ T lymphocyte count was associated with poor ART adherence and MDD. Adjusting for ART adherence, age, sex and education, which were potential confounders, the association between MDD and poor CD4+ T lymphocyte remained significant only in the untreated MDD group.CONCLUSION: Therefore, CD4+ count could be a clinical marker of untreated depression in HIV+. Also, mental health care may be relevant to primary care of HIV+ patients.

Effects of pituitary adenylate cyclase activating polypeptide on CD4^+/CD8^+T cell levels after traumatic brain injury in a rat model

BACKGROUND： The effect of pituitary adenylate cyclase activating polypeptide （PACAP） during traumatic brain injury （TBI） and whether it can modulate secondary injury has not been reported previously. The present study evaluated the potential protective effects of ventricular infusion of PACAP in a rat model of TBI.METHODS： Male Sprague Dawley rats were randomly divided into 3 treatment groups （n=6, each）： sham-operated, vehicle （normal saline）＋TBI, and PACAP＋TBI. Normal saline or PACAP （1 μg/5 μL） was administered intracerebroventricularly 20 minutes before TBI. Right parietal cortical contusion was produced via a weight-dropping method. Brains were extracted 24 hours after trauma. Histological changes in brains were examined by HE staining. The numbers of CD4＋ and CD8＋ T cells in blood and the spleen were detected via flow cytometry.RESULTS： In injured brain regions, edema, hemorrhage, inflammatory cell infiltration, and swollen and degenerated neurons were observed under a light microscope, and the neurons were disorderly arrayed in the hippocampi. Compared to the sham group, average CD4＋ CD8＋ lymphocyte counts in blood and the spleen were significantly decreased in rats that received TBl＋vehicle, and CD4- CD8＋ were increased. In rats administered PACAP prior to TBI, damage was attenuated as evidenced by significantly increased CD4＋, and decreased CD8＋, T lymphocytes in blood and the spleen.CONCLUSION： Pretreatment with PACAP may protect against TBI by influencing periphery T cellular immune function.

An Effective Method for Depleting MatureT Lymphocytes from Bone Marrow Cells──Two－step Percoll Centrifugation

In the present paper we have observed the effect of discontinuous gradient two-step Percoll centrifugation on depleting mature T lymphocytes from normal bone marrow. The pre-/post-Percoll percentage of CD34+, and Leu4+ cells in MNC was counted by using APAAP technique. As the two-step Percoll centrifugation is simple,and time saving, and decreases the incidence of contamination of cultured cells as well,This technique may be of value in serum-free culture of hematopoietic cells and immunological studies.

CD4+ Tcell and tuberculosis results of AIDS patients with different types of tuberculosis

Objective: To investigate the correlation of CD4+T cell and tuberculosis test in AIDS patients with different types of tuberculosis. Methods: A total of 127 cases of AIDS complicated with tuberculosis were selected from our hospital between June 2014 and June 2017 as observation group;50 cases with non-tuberculosis respiratory system who were admitted to our hospital during the same period were selected as control group. The positive rate of TB was examined by T.spotTB test and TST test, and the level of CD4+T lymphocyte was measured by flow cytometry. Results: The positive rate of the observed group After T.spotTB test and TST test was higher than the control group;observation group CD4+T lymphocyte level of 0-100/mm3 was significantly higher than that of the control group;different types of tuberculosis with AIDS showed no significant difference between the T.spotTB test and the TST test in terms of positive rate;There was also no significant difference between the different types of tuberculosis with HIV CD4+T lymphocyte level;the levels of 100-200/mm3 and >200/mm3 CD4+T lymphocytes and T.spotTB test positive and TST positive test were negatively correlated, while the levels of CD4+T lymphocyte 0-100/mm3 and positive T.spotTB test and TST test were positively correlated. Conclusions: the lower level of CD4+T cells in AIDS patients with different types of tuberculosis is positively related to the positive T.spotTB test and TST test.

The relationship of different respiratory virus infection with pediatric asthma attack as well as cytokine and lymphocyte subset levels

Objective:To study the relationship of different respiratory virus infection with pediatric asthma attack as well as cytokine and lymphocyte subset levels.Methods: A total of 85 children who were diagnosed with bronchial asthma in our hospital between May 2013 and March 2016 were selected as asthma group and further divided into asthma-RSV group, asthma-AV group, asthma-PIV group, asthma-IFV group and pure asthma group according to the condition of respiratory virus infection, and 70 healthy children who received physical examination in our hospital during the same period were selected as the control group. Spirometer was used to determine airway function parameters, enzyme-linked immunosorbent assay kits were used to determine serum cytokine contents, and flow cytometry was used to determine peripheral blood lymphocyte subset contents.Results: FEV1/FVC, FEF25, FEF50 and FEF75 levels, serum IL-2, IFN-γ and TGF-β1 contents as well as peripheral blood Th1 and Treg cell contents of asthma groups were significantly lower than those of control group while serum IL-4, IL-5 and IL-17 contents as well as peripheral blood Th2 and Th17 cell contents were significantly higher than those of control group;FEV1/FVC, FEF25, FEF50 and FEF75 levels, serum IL-2, IFN-γ and TGF-β1 contents as well as peripheral blood Th1 and Treg cell contents of asthma-RSV group and asthma-IFV group were significantly lower than those of pure asthma group while serum IL-4, IL-5 and IL-17 contents as well as peripheral blood Th2 and Th17 cell contents were significantly higher than those of pure asthma group;these indexes of asthma-AV group and asthma-PIV group were not significantly different from those of pure asthma group.Conclusion: RSV and IFV infection can affect the airway function and the balance of CD4+T cell subsets to promote the development of asthma.

特发性血小板减少性紫癜患者外周血淋巴细胞的CD_4、CD_(28)表达

目的 :探讨T淋巴细胞表面分子CD4 、CD2 8在特发性血小板减少性紫癜 (ITP)的变化。方法 :用流式细胞术检测 2 1例ITP患者和 9例正常对照外周血淋巴细胞CD+4、CD+2 8、CD+4CD+2 8的表达率以及CD+4T淋巴细胞中的CD+2 8表达率。结果 :ITP患者外周血CD+4、CD+2 8、CD+4CD+2 8表达明显低于正常对照 ,但CD4 细胞中CD+2 8表达与正常对照相比无显著差异。ITP患者外周血淋巴细胞中的CD+2 8表达率与CD+4表达率呈正相关。结论 :ITP患者CD+4T淋巴细胞减少并非因协同刺激信号分子CD2 8表达下降所致 ,CD+4T淋巴细胞无协同刺激信号分子CD2