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Bystanders or not?Microglia and lymphocytes in aging and stroke 被引量:6
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作者 Justin N.Nguyen Anjali Chauhan 《Neural Regeneration Research》 SCIE CAS CSCD 2023年第7期1397-1403,共7页
As the average age of the world population increases,more people will face debilitating aging-associated conditions,including dementia and stroke.Not only does the incidence of these conditions increase with age,but t... As the average age of the world population increases,more people will face debilitating aging-associated conditions,including dementia and stroke.Not only does the incidence of these conditions increase with age,but the recovery afterward is often worse in older patients.Researchers and health professionals must unveil and understand the factors behind age-associated diseases to develop a therapy for older patients.Aging causes profound changes in the immune system including the activation of microglia in the brain.Activated microglia promote T lymphocyte transmigration leading to an increase in neuroinflammation,white matter damage,and cognitive impairment in both older humans and rodents.The presence of T and B lymphocytes is observed in the aged brain and correlates with worse stroke outcomes.Preclinical strategies in stroke target either microglia or the lymphocytes or the communications between them to promote functional recovery in aged subjects.In this review,we examine the role of the microglia and T and B lymphocytes in aging and how they contribute to cognitive impairment.Additionally,we provide an important update on the contribution of these cells and their interactions in preclinical aged stroke. 展开更多
关键词 age B lymphocytes brain central nervous system COGNItION inflammation MICROGLIA middle cerebral artery occlusion NEUROINFLAMMAtION StROKE t lymphocytes white matter injury
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Association of T lymphocyte subset counts with the clinical features of colorectal cancer
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作者 Lei Zhang Yong-Can Shi +3 位作者 Ying-Xin Yang Zhi-Guo Wang Song-Song Wang Hua Zhang 《Journal of Nutritional Oncology》 2023年第4期168-175,共8页
Background:Colorectal cancer(CRC)is a common gastrointestinal malignancy.The T lymphocyte subsets are important in the develop-ment,invasion and metastasis of tumors,including CRC.Nevertheless,limited research has exp... Background:Colorectal cancer(CRC)is a common gastrointestinal malignancy.The T lymphocyte subsets are important in the develop-ment,invasion and metastasis of tumors,including CRC.Nevertheless,limited research has explored the relationship between T cell subpopu-lations and the clinical characteristics of CRC.This study compared the T lymphocyte subsets in patients with CRC and healthy individuals,and assessed the relationship between these values and clinical characteristics.Methods:Peripheral blood was collected from 100 patients with CRC and 54 healthy individuals.The numbers of CD3^(+)T,CD4^(+)T,and CD8^(+)T lymphocytes,NK cells,and the CD4^(+)T/CD8^(+)T ratio in peripheral blood were measured using flow cytometry,and were compared between CRC patients and healthy individuals.Spearman's correlation analysis was performed to investigate the relationship between the T lymphocyte subsets in patients diagnosed with CRC and the levels of carcinoembryonic antigen(CEA)and thymidine kinase 1(TK1).Receiver operating characteristic(ROC)curves were utilized to evaluate the potential utility of the T lymphocyte counts in predicting lymph node metastasis,vas-cular infiltration,and high Ki-67 expression.Results:The CRC patients had lower counts of CD3^(+)T,CD4^(+)T,and CD8^(+)T lymphocytes compared to the healthy population(P<0.05).However,no significant differences were observed in the CD4^(+)/CD8^(+)ratio or NK cells(P>0.05).Notably,the CD3^(+)T,CD4^(+)T,and CD8^(+)T lym-phocyte counts were higher in patients with stageⅠ-Ⅱdisease,no lymph node metastasis,no vascular invasion,and low Ki-67 expression than in those with stageⅢ,lymph node metastasis,vascular invasion,and high Ki-67 expression(P<0.05).There was a negative association be-tween the CD3^(+)T,CD4^(+)T,and CD8^(+)T lymphocyte counts and CEA and TK1 levels in patients with CRC.The ROC curves demonstrated that CD3^(+)T,CD4^(+)T,and CD8^(+)T lymphocyte counts had significant predictive value for lymph node metastasis,vascular infiltration,and high Ki-67 expression.Conclusions:The peripheral blood CD3^(+)T,CD4^(+)T,and CD8^(+)T lymphocyte counts are related to the clinical traits of patients with CRC and can predict the prognosis of the disease. 展开更多
关键词 t lymphocyte subset flow cytometry IMMUNItY colorectal cancer
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Correlative factors of poor prognosis and abnormal cellular immune function in patients with Alzheimer’s disease
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作者 Hua Bai Hong-Mei Zeng +2 位作者 Qi-Fang Zhang Yue-Zhi Hu Fei-Fei Deng 《World Journal of Clinical Cases》 SCIE 2024年第6期1063-1075,共13页
BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation... BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation in the pathogenesis of AD is becoming more and more important.AIM To study the relationship among cognitive dysfunction,abnormal cellular immune function,neuroimaging results and poor prognostic factors in patients.METHODS A retrospective analysis of 62 hospitalized patients clinical diagnosed with AD who were admitted to our hospital from November 2015 to November 2020.Collect cognitive dysfunction performance characteristics,laboratory test data and neuroimaging data from medical records within 24 h of admission,including Mini Mental State Examination Scale score,drawing clock test,blood T lymphocyte subsets,and neutrophils and lymphocyte ratio(NLR),disturbance of consciousness,extrapyramidal symptoms,electroencephalogram(EEG)and head nucleus magnetic spectroscopy(MRS)and other data.Multivariate logistic regression analysis was used to determine independent prog-nostic factors.the modified Rankin scale(mRS)was used to determine whether the prognosis was good.The correlation between drug treatment and prognostic mRS score was tested by the rank sum test.RESULTS Univariate analysis showed that abnormal cellular immune function,extrapyramidal symptoms,obvious disturbance of consciousness,abnormal EEG,increased NLR,abnormal MRS,and complicated pneumonia were related to the poor prognosis of AD patients.Multivariate logistic regression analysis showed that the decrease in the proportion of T lym-phocytes in the blood after abnormal cellular immune function(odd ratio:2.078,95%confidence interval:1.156-3.986,P<0.05)was an independent risk factor for predicting the poor prognosis of AD.The number of days of donepezil treatment to improve cognitive function was negatively correlated with mRS score(r=0.578,P<0.05).CONCLUSION The decrease in the proportion of T lymphocytes may have predictive value for the poor prognosis of AD.It is recommended that the proportion of T lymphocytes<55%is used as the cut-off threshold for predicting the poor prog-nosis of AD.The early and continuous drug treatment is associated with a good prognosis. 展开更多
关键词 Alzheimer’s disease Cellular immunity PROGNOSIS t lymphocytes Magnetic resonance spectroscopy
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Subgroups of peripheral immune effector cells in cervical cancer patients are more sensitive to radiation therapy than chemotherapy
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作者 Ning Zhao Dong-Mei Han +1 位作者 Cai-Hong Wu Hao Jin 《Cancer Advances》 2024年第3期1-7,共7页
Background:CD8 positive T lymphocytes and natural killer(NK)cells in the peripheral blood of cervical cancer patients exhibit varying sensitivities to radiotherapy and chemotherapy.Methods:A total of 50 healthy people... Background:CD8 positive T lymphocytes and natural killer(NK)cells in the peripheral blood of cervical cancer patients exhibit varying sensitivities to radiotherapy and chemotherapy.Methods:A total of 50 healthy peoples and 60 cervical cancer patients were recruited.The patients with cervical cancer were separated into two groups:radiation and chemotherapy,and blood sample were collected before and after treatment.Data on the proportion of CD8 positive T lymphocytes and NK cells were gathered for analytical evaluation.Results:Compared to healthy individuals,patients with cervical cancer exhibit a reduced proportion of CD8 positive T cells within their peripheral blood.And for patients with cervical cancer,radiation therapy has been found to be more effective than chemotherapy in increasing the proportion of CD8 positive T lymphocytes and NK cells.Conclusions:These results suggest that radiation therapy increases the levels of CD8 positive T lymphocytes and NK cells within the peripheral blood of patients with cervical cancer.The study hypothesis that the changes in the percentage of CD8 positive T lymphocytes may serve as a potential indicator for predicting treatment efficacy. 展开更多
关键词 CD8 positive t lymphocytes flow cytometry natural killer cells RADIOtHERAPY uterine cervical neoplasms
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Effect of Chinese Herbal Medicinal Ingredients on IL-2 mRNA Levels of T Lymphocytes in Mice Measured Using Semiquantification RT-PCR 被引量:11
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作者 CHU Yue-feng YAN Xin-min +1 位作者 LI Xiang-rui HU Yuan-liang 《Agricultural Sciences in China》 CAS CSCD 2006年第11期873-878,共6页
In this study, the IL-2 mRNA levels of T lymphocytes in normal mice stimulated by nine Chinese herbal medicinal ingredients (CHMIs) were measured using semiquantification reverse transcription polymerase chain react... In this study, the IL-2 mRNA levels of T lymphocytes in normal mice stimulated by nine Chinese herbal medicinal ingredients (CHMIs) were measured using semiquantification reverse transcription polymerase chain reaction. The results showed that astragalus polysaccharide (APS), epimedium polysaccharide (EPS), Chinese angelica polysaccharide (CAPS), propolis flavone (PF), and astrogalosides (AS) promoted IL-2 mRNA levels in T lymphocytes in vitro and in vivo to differing degrees, and the level of IL-2 mRNA induced by propolis polysaccharide (PPS) in vitro was higher than that induced by the control, which differed from that of PPS in vivo. 展开更多
关键词 Chinese herbal medicinal ingredients semiquantification Rt-PCR IL-2 mRNA t lymphocytes MICE
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Ambiguous nucleus regulates the proliferation and percentage of T lymphocytes in peripheral blood 被引量:3
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作者 Wei Wang Wei Chen Yingwu Mei Bin Guo Zhanqing Yang Shoupeng Fu Zhanpeng Yue Juxiong Liu 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第35期2761-2767,共7页
The aim of this study was to examine the immunomodulatory role of the unilateral ambiguous nucleus (Amb). We performed electrical stimulation of the unilateral Amb, electrical stimulation of the left parietal cortex... The aim of this study was to examine the immunomodulatory role of the unilateral ambiguous nucleus (Amb). We performed electrical stimulation of the unilateral Amb, electrical stimulation of the left parietal cortex and the lateral hypothalamus following unilateral Arab lesion, as well as microinjection of acetylcholine chloride and hemicholine-3 into the unilateral Amb, and electrical stimulation of the unilateral Amb after injection of atropine, mecamylamine, propranolol, and phentolamine. Results showed that the number and proliferation of peripheral blood T lymphocytes were increased after electrical stimulation of the unilateral Arab. The cholinergic neurons in the Amb released choline substances to alter cellular immunity, thus confirming that the Amb mediates the neuro-immunomodulatory process. 展开更多
关键词 ambiguous nucleus electrical stimulation t lymphocytes PROLIFERAtION neuroimmune regulation parasympathetic nervous system
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Cross-talk between hepatic stellate cells and T lymphocytes in liver fibrosis 被引量:2
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作者 Hao Li Peng Ding +1 位作者 Bo Peng Ying-Zi Ming 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS CSCD 2021年第3期207-214,共8页
Background: Fibrosis results from inflammation and healing following injury. The imbalance between extracellular matrix(ECM) secretion and degradation leads to the ECM accumulation and liver fibrosis. This process is ... Background: Fibrosis results from inflammation and healing following injury. The imbalance between extracellular matrix(ECM) secretion and degradation leads to the ECM accumulation and liver fibrosis. This process is regulated by immune cells. T lymphocytes, including alpha beta( αβ) T cells, which have adaptive immune functions, and gamma delta( γδ) T cells, which have innate immune functions, are considered regulators of liver fibrosis. This review aimed to present the current understanding of the cross-talk between T lymphocytes and hepatic stellate cells(HSCs), which are the key cells in liver fibrosis. Data sources: The keywords "liver fibrosis", "immune", and "T cells" were used to retrieve articles published in Pub Med database before January 31, 2020. Results: The ratio of CD8 +(suppressor) T cells to CD4+(helper) T cells is significantly higher in the liver than in the peripheral blood. T cells secrete a series of cytokines and chemokines to regulate the inflammation in the liver and the activation of HSCs to influence the course of liver fibrosis. In addition, HSCs also regulate the differentiation and proliferation of T cells. Conclusions: The cross-talk between T cells and HSCs regulates liver fibrosis progression. The elucidation of this communication process will help us to understand the pathological process of liver fibrosis. 展开更多
关键词 Hepatic stellate cells t lymphocytes Inflammatory cytokines FIBROSIS
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Influence of REV and ALV-J Co-Infection on Immunologic Function of T Lymphocytes and Histopathology in Broiler Chickens 被引量:6
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作者 GUO Hui-jun, LI Hong-mei, CHENG Zi-qiang , LIU Jian-zhu and CUI Zhi-zhong Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Veternary Medicine, Shandong Agricultural University, Tai’an 271018, P.R.China 《Agricultural Sciences in China》 CSCD 2010年第11期1667-1676,共10页
The aim of present investigation is to study the effect of single- and co-infection with REV and ALV-J on T lymphocytes bioactivities and histopathology in broiler chickens. The bioactivities of blood and spleen T lym... The aim of present investigation is to study the effect of single- and co-infection with REV and ALV-J on T lymphocytes bioactivities and histopathology in broiler chickens. The bioactivities of blood and spleen T lymphocytes including lymphoproliferation responses, cytotoxicitic responses, and histopathology of spleen were detected in broiler chickens singly- or co-infected with REV and ALV-J at different days post inoculation and the virus expressions in spleen of infected broiler chickens were detected with immunofluorescence assay (IFA). The results indicated that blood and spleen T lymphocytes proliferation responses and cytotoxicity in broilers infected with REV or/and ALV-J were inhibited in the whole observed period compared with controls. In the co-infected chickens they were highly inhibited than in the single-infected. The histopathology of spleen in infected chickens at 17 and 37 d post inoculation (dpi) indicated that cell interium increased, the numbers of lymphocytes decreased, and the regrowth were destroyed or decreased, especially more significantly at 17 than at 37 dpi. The different numbers of virus were detected in spleen lymphocytes in REV- infected and/or ALV-J-infected chickens. In the spleen of co-infected chicken, both REV and ALV-J were detected and the total numbers of viruses were more than in chickens singly-infected with REV or ALV-J. Thus, the co-effect of REV and ALV-J caused more immunosuppression on T lymphocytes bioactivities in broiler chickens than single-effect of ALV-J or REV, which contributed to the sever histopathology and the product of tumor cells. This study will be helpful for understanding the effect of co-infection with many viruses and control them in poultry. 展开更多
关键词 reticuloendotheliosis virus (REV) J subgroup of avian leukosis virus (ALV-J) t lymphocyte activity histopathology commercial broiler chickens
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Frequencies and Characterization of HBV-specific Cytotoxic T Lymphocytes in Self-limited and Chronic Hepatitis B Viral Infection in China 被引量:2
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作者 杨新星 郝友华 +5 位作者 刘贽 陈玲 丁红晖 赵西平 陆蒙吉 杨东亮 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2009年第5期567-574,共8页
Hepatitis B virus (HBV)-specific cytotoxic T lymphocytes (CTLs) are believed to play a major role in viral clearance and disease pathogenesis during HBV infection. To clarify the differences in host immune respons... Hepatitis B virus (HBV)-specific cytotoxic T lymphocytes (CTLs) are believed to play a major role in viral clearance and disease pathogenesis during HBV infection. To clarify the differences in host immune responses between self-limited and chronic HBV infections, we constructed three HLA-A*0201/HBV tetramers with immunodominant epitopes of core18-27, polymerase 575-583 and envelope 335-343, and analyzed the HBV-specific CTLs in peripheral blood mononuclear cells (PBMCs) from patients infected with HBV. The frequencies and expansion ability of HBV-specific CD8+T cells in most self-limited HBV infected individuals were higher than those in chronic HBV-infected patients. HBV-specific CD8+T cells could be induced by in vitro peptide stimulation from chronic patients with a low level of serum HBV-DNA but not from those with a high level of serum HBV-DNA. In chronic infection, no significant correlation was found either between the frequencies of HBV-specific CD8^+ T cells and the viral load, or between the frequencies and the levels of alanine transaminase. Our results suggested that the frequencies of HBV-specific CTLs are not the main determinant of immune-mediated protection in chronic HBV infection and immunotherapeutic approaches should be aimed at not only boosting a HBV-specific CD8^+T response but also improving its function. 展开更多
关键词 hepatitis B virus cytotoxic t lymphocyte HLA-A*0201
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Effect of immunopotentiator of the Chinese herbal medicine on the quantity of T lymphocyte in chicken 被引量:1
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作者 SHI Qiumei SHEN Ping +2 位作者 GAO Guisheng ZHAO Ruili TANG Shengling 《Journal of Northeast Agricultural University(English Edition)》 CAS 2007年第2期120-124,共5页
In order to study the mechanism of immunopotentiator, the quantity of T lymphocyte was observed. Total 240 1-day chikens were divided into 3 groups randomly: one contrast group and two groups being drunk immunopotent... In order to study the mechanism of immunopotentiator, the quantity of T lymphocyte was observed. Total 240 1-day chikens were divided into 3 groups randomly: one contrast group and two groups being drunk immunopotentiator according to the concentration 10 mL·L^-1 and 5 mL·L^-1 lasting for 48 d. The number of T lymphocyte in blood was measured by E-rosette when the chikens were at 12-, 24-, 36-, and 48-day. The results showed that the percent ofT lymphocyte in the trial group was obviously higher than that of the contrast, and the 10 mL·L^-1 group was higher than that of the 5 mL·L^-1 group; the quantity distribution of T lymphocyte in intestinal mucosa lymphoid tissue of 14-day, 21-day chiken was surveyed in the contrast group and the10 mL·L^-1 group with the method of routine histology-slices and ANAE, the results showed that the quantity of T lymphocyte in the 10 mL·L^-1 group was significantly higher than that of the contrast, which indicated that immunopotentiator increased markedly the quantity of T lymphocyte, and the 10 mL·L^-1 group was higher than that of the 5 mL·L^-1 group. 展开更多
关键词 IMMUNOPOtENtIAtOR t lymphocyte E-rosette HIStOLOGY
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Observation of T Lymphocyte Subsets in the Liver of Patients with Advanced Schistosomiasis and Advanced Schistosomiasis Accompanied with Hepatitis B 被引量:1
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作者 张淑玲 李祖进 +1 位作者 蔡淑清 曾令兰 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2000年第2期137-138,共2页
T lymphocyte subsets in the liver were detected by Avidin-Biotin Complex (ABC) assay in 22 patients with advanced schistosomiasis (AS) and 5 cases of AS accompanied with hepatitis B. T lymphocytes in the liver of AS p... T lymphocyte subsets in the liver were detected by Avidin-Biotin Complex (ABC) assay in 22 patients with advanced schistosomiasis (AS) and 5 cases of AS accompanied with hepatitis B. T lymphocytes in the liver of AS patients were distributed in the peripheral layer of egg granuloma or the area near eggs in non-granuloma. No infiltrative T lymphocytes were observed in area with extensive fibrosis. There was infiltration of many T cells in the portal tract, piecemeal and focal necro- sis area as well as in hepatic sinus in AS patients accompanied with hepatitis B. CD8+ T cells (sup pressor/cytotoxic T cells, Ts/Tc) in the liver were predominant in the two groups. In AS patients, marked hepatic fibrosis, a small number of T cell infiltration and slight hepatocellular degeneration and necrosis were observed. However, obvious hepatocellular degeneration and necrosis were seen in AS patients accompanied with hepatitis B, and 3 cases of them developed active liver cirrhosis. The results indicated immune response was weak in the liver in AS patients and T. cells might be predominant in the subset of CDS+ T lymphocytes. Cellular immune response was relatively strong in AS patients accompanied with hepatitis B and the infiltrative CD8+ T lymphocytes might be mainly Tc cells. 展开更多
关键词 advanced schistosomiasis hepatitis B t lymphocyte subsets
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Therapeutic Effect of Integrative Traditional Chinese and Western Medicine on 51 SARS Patients and Its Influence on Their TLymphocyte Subsets 被引量:1
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作者 李秀惠 胡建华 +2 位作者 张可 叶军 勾春燕 《Chinese Journal of Integrated Traditional and Western Medicine》 2003年第4期263-265,共3页
Objective: To observe the clinical effect of integrative Chinese a nd western medicine (ICWM) in treatment of patients with severe acute respirator y syndrome (SARS) and its influence on their T lymphocyte subsets.Met... Objective: To observe the clinical effect of integrative Chinese a nd western medicine (ICWM) in treatment of patients with severe acute respirator y syndrome (SARS) and its influence on their T lymphocyte subsets.Methods: Fifty one patients with SARS of severe type were obser ved with synchronous non randomized controlled method. They were divided into the ICWM group (29 patients) and the western medicine (WM) group (22 patients). Western medical treatment was applied to both groups, but to the ICWM group, Ch inese medicine was given additionally. The therapeutic course was 2-3 weeks for both groups. Clinical effect and changes of T lymphocyte subsets (CD4 +) aft er treatment were observed.Results: In the ICWM group, 26 patients (89.66%) were cured and 3 (10.34%) died, while in the WM group, 12 (54.55%) cur ed and 10 (45.45%) died, thus comparison of the cure rate between the two groups showing significant difference ( P <0.01). The score of clinical symptoms in the ICWM group was decreased from 7.14±5.20 scores before treatment to 1.82±3. 75 scores after treatment, while in the WM group, it lowered from 7.36±3.84 sco res before treatment to 5.17±4.17 scores after treatment, significant diffe rence shown in the comparison of the values between the two groups after treatme nt (P<0.01). Immunological function test showed that CD4 + T lymphocyte in the ICWM group rose from 361±278 cells/mm 3 before treatment to 630±454 c ells/mm 3 after treatment, showing significant difference( P <0.01 );bu t in the WM group, it merely rose from 288±186 cells/mm 3 to 376±285 cells/mm 3 in the corresponding period (P>0.05). Conclusion: ICWM could improve the clinical symptoms of SARS pa tients markedly, enhance their T lymphocyte immune function, and reduce their mortality. 展开更多
关键词 integrative Chinese and western medicin e severe acute respiratory syndrome t lymphocyte subsets tREAtMENt
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Glypican-3-specific cytotoxic T lymphocytes induced by human leucocyte antigen-A*0201-restricted peptide effectively kill hepatocellular carcinoma cells in vitro
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作者 Jiang-Zheng Zeng Yu Liu +5 位作者 Fen Huang Zhi-Hui He Huamao Sun Yan-Da Lu Jun-Hua Lei Rong-Cheng Luo 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2017年第11期1084-1089,共6页
Objective: To investigate potential human leucocyte antigen(HLA)-A2-restricted epitope peptides of glypican-3(GPC3) and determine the cytotoxicity of peptidespecific cytotoxic T lymphocytes(CTLs) against hepatocellula... Objective: To investigate potential human leucocyte antigen(HLA)-A2-restricted epitope peptides of glypican-3(GPC3) and determine the cytotoxicity of peptidespecific cytotoxic T lymphocytes(CTLs) against hepatocellular carcinoma(HCC) cells.Methods: The potential HLA-A*0201-restricted GPC3 peptides were screened using computer algorithms, T2 cell-binding affinity and stability of peptide/HLA-A*0201 complex assay. The peptide-specific CTLs were generated and their cytotoxicity against GPC3+SMMC 7721 and Hep G2 cells was detected using IFN-g based enzymelinked immunospot and lactate dehydrogenase release assays in vitro.Results: A total of six peptides were identified for bindings to HAL-A2 and the GPC3522–530 and GPC3 229–237 peptides with HLA-A*0201 molecules displayed high binding affinity and stability. The CTLs induced by the GPC3 522–530 or positive control GPC3 144–152 peptide responded to the peptide by producing IFN-g, which were abrogated by treatment with anti-HLA-A2 antibody. The GPC3 522–530-specific CTLs responded to and killed SMMC 7721 and Hep G2 cells, instead of GPC3-silenced SMMC7721 or Hep G2 cells. GPC3 522–530-specific CTLs response to HCC cells was blocked by anti-HLA-A2 antibody.Conclusions: The GPC3 522–530 peptide contains antigen-determinant and its specific CTLs can effectively kill HCC in a HLA-A2-restricted and peptide-dependent manner. Our findings suggest that this peptide may be valuable for development of therapeutic vaccine. 展开更多
关键词 GLYPICAN-3 PEPtIDE Cytotoxic t lymphocyte Hepatocellular carcinoma
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Complete Human Immunodeficiency Virus-1 Specific T Lymphocyte Response to Chinese Human Immunodeficiency Virus-1 B/C Chronic Infectors
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作者 ZHE WANG HONG-WEI LIU +5 位作者 KUN-XUE HONG ZU-JIANG YU JIAN -PING CHEN YU-HUA RUAN QUAN-CHENG KAN YI-MING SHAO 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2009年第6期522-528,共7页
Objective To characterize the human immunodeficiency virus (HIV) -specific T lymphocyte responses and identify the immunodominant regions in Chinese HIV-1 recombinant subtype B/C chronic infectors at complete genome... Objective To characterize the human immunodeficiency virus (HIV) -specific T lymphocyte responses and identify the immunodominant regions in Chinese HIV-1 recombinant subtype B/C chronic infectors at complete genome level. Methods Twenty-five HIV-I B/C recombinant chronic infectors were screened for their specific T lymphocyte responses to a panel of peptides corresponding to the complete HIV-1 subtype B genome by gamma interferon ELISPOT assay. Kruskal-Wallis nonparametric analysis of variance was used to test significant differences across gene regions, and Tukey pairwise analysis was used to identify differences between gene regions. Spearman rank correlation was used to assess the relation between responses. Results The order of recognized frequencies of specific T lymphocyte responses to HIV proteins was Nef〉Vpr〉Gag〉Pol〉Vpu〉Env〉Rev〉Vif〉Tat. When adjusted for protein length, Nef, Vpr, Gag, and Pol were the most intensely targeted proteins and the central region of Nef, Gag p24, Pol RT, and Vpr was most frequently recognized. No significant correlation was observed between the magnitude of IFN-γ production of HIV-l-specific T lymphocyte responses and plasma viremia, breadth of response and CD4 counts. Conclusion The central region of Nef, Gag p24, Pol RT, and Vpr is most frequently targeted in HIV-1 B/C recombinants chronic infectors. HIV-1-specific T lymphocyte responses and plasma viremia or CD4 counts play no protective role at complete genome level in these infectors. 展开更多
关键词 Human immunodeficiency virus (HIV) Specific t lymphocyte response ELISPOt IFN-γ
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Study on T lymphocyte subsets and NK cells in patients with Graves' disease combined with type 2 diabetes
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作者 魏枫 杜婧 +3 位作者 苏秀兰 乌兰 王津京 霍晓静 《Journal of Pharmaceutical Analysis》 SCIE CAS 2008年第2期92-94,共3页
Objective To investigate changes in T lymphocyte subsets and NK cells in patients with simple Graves’ disease(GD)and Graves’ disease combined with type 2 diabetes mellitus(GD/T2DM).Methods Fifteen cases of GD/T2DM w... Objective To investigate changes in T lymphocyte subsets and NK cells in patients with simple Graves’ disease(GD)and Graves’ disease combined with type 2 diabetes mellitus(GD/T2DM).Methods Fifteen cases of GD/T2DM were selected from our hospital from November 2001 to November 2004.Before and after therapy thyroid function,thyroglobulin antibody(TGA),thyroid microsomal antibody(TMA)and blood glucose level were measured,and T lymphocyte subsets(CD3,CD4,CD8,CD4/CD8)and NK cells(CD56)were measured by immunofluorescence double labeling monoclonal antibody and flow cytometry,respectively.At the same time,comparison was made with simple GD(15 cases),T2DM(15 cases)and healthy control(20 cases).Results Before therapy,CD4/CD8,CD4 and NK cells in GD/T2DM were less than normal,and there was no significant difference in comparison with simple GD(P<0.05).In T2DM group,only CD4/CD8 and CD4 were less than those of healthy controls(P<0.05).When thyroid function recovered after 1 to 3 months of methimazole treatment in both GD/T2DM and simple GD groups,various indexes recovered,which were more obvious in simple GD.Conclusion Immune hypofunction of GD may be the key to the immune abnormality of GD/T2DM,which is more significant than that of simple GD or T2DM.The recovery of thyroid function and immune abnormality is not consistent,and the recovery of GD is more significant than that of GD/T2DM. 展开更多
关键词 Graves' disease t lymphocyte subsets NK cells type 2 diabetes mellitus
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An Effective Method for Depleting MatureT Lymphocytes from Bone Marrow Cells──Two-step Percoll Centrifugation
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作者 唐继森 王辨明 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 1994年第2期128-128,共1页
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... 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. 展开更多
关键词 Percoll centrifugation mature t lymphocyte in bonemarrow CD34+ cells Leu4+ t lymphocytes
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Construction of HA-1-DC Nucleic-acid Vaccine and Induction of Specific Cytotoxic T Lymphocytes
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作者 汪涯雅 张东华 +6 位作者 胡金梅 刘文励 周红升 张路 刘丹 黄振倩 谭获 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2007年第3期261-264,共4页
An HA-1-DC nucleic-acid vaccine was constructed to induce anti-leukemia effect after hematopoietic stem cell transplantation (HSCT). DCs were generated from HSCT donors in vitro, and its immunologic activity was assay... An HA-1-DC nucleic-acid vaccine was constructed to induce anti-leukemia effect after hematopoietic stem cell transplantation (HSCT). DCs were generated from HSCT donors in vitro, and its immunologic activity was assayed by using flow cytometry and mixed lymphocytes reaction. HA-1 gene was electroporated into the cultured DCs to construct a DC nucleic-acid vaccine. After transfection for 48 h, the expression of HA-1 protein could be detected by using Western blot. The DCs were cultured with syngenic lymphocytes to induce specific cytotoxic T lymphocytes (CTLs). The cytoxicity of the CTLs was detected by LDH assay. The results showed that The DCs derived from peripheral blood monocytes (PBMCs) expressed the phenotype of DCs, and were effective in stimulating proliferation of the allogenic lymphocytes. After electroporating for 48-h, HA-1 protein was detected by using Western blot. The cytotoxity of inducing CTLs was higher than the control group. It was suggested that minor histocompatibility antigen HA-1 could be considered as a target of immunotherapy against leukemia after HSCT. 展开更多
关键词 dendritic cell HA-1 nucleic-acid vaccine hematopoietic stem cell transplantation cy- totoxic t lymphocyte
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Effects of Immunopotentiator of the Traditional Chinese Medicine on T Lymphocytes in Chicken Blood
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作者 SHI Qiumei LI Chunling +2 位作者 GAO Guisheng SHEN Ping TANG Shengling 《Journal of Northeast Agricultural University(English Edition)》 CAS 2008年第2期26-29,共4页
In order to investigate the mechanism of action of immunoenhancer, the effects of the traditional Chinese medicine immunopromoter on the quantity and the transformation rates of T lymphocytes in the chicken blood were... In order to investigate the mechanism of action of immunoenhancer, the effects of the traditional Chinese medicine immunopromoter on the quantity and the transformation rates of T lymphocytes in the chicken blood were determined. Total 120 chickens were randomly assigned into three groups. The 1% and the 0.5% of the Chinese medicine immunopromoter were added to the chicken drinking water, respectively. The quantity of T lymphocytes in each group was measured by a-Naphthyl acetate esterase (ANAE) staining. The results showed that the percentages of T lymphocytes of the treatment groups were significantly higher than that of the control group (P〈0.05), and the percentage of the 1% group significantly higher than that of the 0.5% group (P〈0.05). In conclusion, the transformation rates of T lymphocytes showed that the Chinese medicine immunopromoter had the significant enhancing effect on the transformation rates of T lymphocytes of the treated chickens. The traditional Chinese medicine immunopromoter had the distinct function to promote the quantity and the transformation rate of T lymphocytes. 展开更多
关键词 traditional Chinese medicine immunopromoter t lymphocyte a-Naphthyl acetate esterase staining
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T LYMPHOCYTE SUBSETS OF PERIPHERAL BLOOD AND THEIR RELATIONSHIP WITH BETA-2-MICROGLOBULIN IN MULTIPLE MYELOMA
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作者 郑成云 陈学民 +1 位作者 王宝燕 陈开浚 《Journal of Pharmaceutical Analysis》 CAS 1996年第1期77-79,共3页
patients with multiple myeloma (MM) were investigated for lymphocyte subsets using APAAP (Alkaline Phosphastase Anti-Alkaline Phosphatase) technique and a panel of monoclonal antibodies.Radioimmunoassay was used to ex... patients with multiple myeloma (MM) were investigated for lymphocyte subsets using APAAP (Alkaline Phosphastase Anti-Alkaline Phosphatase) technique and a panel of monoclonal antibodies.Radioimmunoassay was used to examine serum beta-2-microglobulin (Sβ2-MG).The results showed that OKT3, OKT4 positive cells and OKT4/OKT8 ratio reduced significantly. OKT8 positive cells increased sharply in MM. We conclude that,in MM,all patients have severe abnormalities in the number and proportion of T cells.The level of S β2-MG increased significantly, especially in the initial and relapsing patients.But,we did not find the relationship between Sβ2-MG and T subsets. 展开更多
关键词 t lymphocyte subsets beta-2-microgiohulin multiple myeioma
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Correlation analysis of TCM syndrome types with T lymphocytes and biochemical indices in patients with HBV-related primary liver cancer
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作者 Han-Xiao Wang Zhong-Jie Yu +1 位作者 Jian-Peng Liu Wen-Xia Zhao 《Journal of Hainan Medical University》 2021年第22期10-16,共7页
Objective:To investigate the correlation between T lymphocytes and biochemical indices in patients with Primary liver cancer(PLC)associated with hepatitis B virus(HBV)and TCM syndrome differentiation.Methods:263 HBV-r... Objective:To investigate the correlation between T lymphocytes and biochemical indices in patients with Primary liver cancer(PLC)associated with hepatitis B virus(HBV)and TCM syndrome differentiation.Methods:263 HBV-related PLC patients who were admitted to the First Affiliated Hospital of Henan University of Traditional Chinese Medicine from January 2018 to December 2019 were retrospectively collected.There were 127 cases of liver depression and spleen deficiency syndrome(48.3%),48 cases of spleen deficiency and dampness syndrome(18.3%),31 cases of liver and gallbladder dampness and heat syndrome(11.8%),35 cases of liver and blood stasis syndrome(13.3%),and 22 cases of liver and kidney Yin deficiency syndrome(8.4%).The general data,T cell subsets,oncology and virology indicators,oncology characteristics,biochemical indicators and other data were counted.Epidata and Excel were used to collect and summarize the data,and SPSS26.0 software was used for statistical analysis.Results:There was no significant difference in gender and age distribution among the five syndrome types(χ^(2)=5.462,F=1.979,ALL P>0.05).The differences among T lymphocyte count(χ^(2)=57.785,P<0.001),CD4(+)T cell count(χ^(2)=47.103,P<0.001)and CD8(+)T lymphocyte count(F=12.760,P<0.001)were statistically significant.The T lymphocyte count,CD4(+)T lymphocyte count and CD8(+)T lymphocyte explicit count in patients with liver and kidney Yin deficiency syndrome were significantly lower than those in the other four syndrome types.AFP(χ^(2)=89.986,P<0.001),CEA(χ^(2)=95.501,P<0.001),CA199(χ^(2)=30.044,P<0.001)of the five syndrome types increased successively from the syndrome of liver depression and spleen deficiency to the syndrome of liver and kidney Yin deficiency,and the difference was statistically significant.There were statistically significant differences in the inner diameter of main portal vein,portal vein cancer thrombin and extrahepatic metastasis among the five syndrome types(ALL P<0.001).The main symptoms of portal vein cancer thrombin and extrahepatic metastasis were liver-gallbladder dampness-heat syndrome and liver-blood stasis syndrome.The differences among PLT(χ^(2)=39.234,P<0.001),Alb(χ^(2)=75.171,P<0.001),TBil(χ^(2)=51.140,P<0.001),AST(χ^(2)=55.881,P<0.001),PT(χ^(2)=21.515,P<0.001)were statistically significant.PLT and Alb decreased successively from the syndrome of liver depression and spleen deficiency to the syndrome of liver and kidney Yin deficiency.PLT and Alb of the syndrome of liver depression and spleen deficiency were significantly higher than those of the other four groups,and TBil and AST of the syndrome of liver and gallbladder dampness and heat were significantly higher than those of the other four groups.PT of liver and kidney Yin deficiency was significantly higher than that of the other four groups.The lymphocyte count,CD4(+) lymphocyte count and CD8(+) lymphocyte count were negatively correlated with AFP,PT and TBil(ALL P<0.05),and positively correlated with PLT(P<0.05).T lymphocyte count was positively correlated with AIb(P<0.05).Conclusion:This study found that patients with liver depression and spleen deficiency syndrome have better cellular immune function,liver function and prognosis.Patients with liver and kidney Yin deficiency have lower cellular immunity,worse liver function,and worse prognosis.Portal vein carcinoma embolus and extrahepatic metastasis were mainly characterized by dampness and heat of liver and gallbladder and blood stasis of liver.Patients with lower lymphocyte counts have poorer blood clotting,worse the liver reserve,and the higher the risk of further cancer. 展开更多
关键词 Hepatitis B Primary liver cancer tCM syndrome type t lymphocytes the biochemical indicators
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