scholarly journals Flow cytometric analysis of T lymphocytes and cytokines in aqueous humor of patients with varicella zoster virus-mediated acute retinal necrosis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hao Kang ◽  
Yunbo Wei ◽  
Ming Liu ◽  
Di Yu ◽  
Yong Tao
Keyword(s):  
T Lymphocytes ◽  
Varicella Zoster Virus ◽  
Aqueous Humor ◽  
T Lymphocyte ◽  
Lymphocyte Subsets ◽  
Flow Cytometric Analysis ◽  
T Lymphocyte Subsets ◽  
Varicella Zoster ◽  
Flow Cytometric ◽  
Cd8 T Lymphocytes

Abstract Background The purpose of this study is to investigate the aqueous humor (AH) T lymphocyte subsets and cytokines of acute retinal necrosis (ARN) to elucidate the immunologic inflammatory features of this disorder. Methods Three patients with ARN infected with varicella zoster virus (VZV) who underwent multiple intravitreal injections of ganciclovir were enrolled in this study. The control group consisted of four non-infectious patients with acute anterior uveitis (AAU). Flow cytometric analysis was performed on the lymphocyte subsets from the AH and peripheral blood (PB) samples during the active phase of intraocular inflammation. Five inflammatory cytokines were measured in each AH sample and various clinical characteristics were also assessed. Results VZV deoxyribonucleic acid (DNA) was detected by real-time polymerase chain reaction (PCR) in AH from all the ARN patients, who showed higher CD8+ T lymphocytes population in AH than the AAU patients (p = 0.006). CD4/CD8 ratios of T lymphocytes and the percentage of CD8 + CD25+ T lymphocytes in AH were significantly lower in ARN than in AAU (p = 0.006; p = 0.012). In the ARN patients, the percentages of CD4+ and CD8+ T lymphocytes in AH were higher than those found in PB. The percentage of CD4 + CD25+ T lymphocytes in AH was significantly higher than the proportion in PB in the AAU patients (p = 0.001). Immunoregulatory cytokine Interleukin-10 in AH was significantly elevated in the ARN patients in comparison with the case of the AAU patients (p = 0.036). In ARN, the copy number of VZV DNA in AH positively correlated with the percentage of CD8+ T lymphocytes in AH and negatively correlated with the CD4/CD8 ratio in AH during the course of disease treatment (p = 0.009, r = 0.92; p = 0.039, r = − 0.834). Conclusion The ARN patients caused by VZV had different intraocular T lymphocyte subsets and cytokines profile than those of the non-infectious patients. High percentages of CD8+ T lymphocytes and low CD4/CD8 T cell ratios may be a potential biomarker for diagnosis of viral-infectious uveitis. T lymphocytes examination at the inflammatory sites has the potential to become a useful research tool for differentiating viral and non-viral uveitis.

Flow Cytometric Analysis of T Lymphocytes and Cytokines in Aqueous Humor of Patients with Varicella Zoster Virus-mediated Acute Retinal Necrosis

2020 ◽  
Author(s):  
Hao Kang ◽  
Yunbo Wei ◽  
Ming Liu ◽  
Di Yu ◽  
Yong Tao
Keyword(s):  
T Lymphocytes ◽  
Varicella Zoster Virus ◽  
Aqueous Humor ◽  
T Lymphocyte ◽  
Lymphocyte Subsets ◽  
Flow Cytometric Analysis ◽  
T Lymphocyte Subsets ◽  
Varicella Zoster ◽  
Flow Cytometric ◽  
Cd8 T Lymphocytes

Abstract Background: The purpose of this study is to investigate the aqueous humor (AH) T lymphocyte subsets and cytokines of acute retinal necrosis (ARN) to elucidate the immunologic inflammatory features of this disorder.Methods: Three patients with ARN infected with varicella zoster virus (VZV) who underwent multiple intravitreal injections of ganciclovir were enrolled in this study. The control group consisted of four non-viral infectious patients with acute anterior uveitis (AAU). Flow cytometric analysis was performed on the lymphocyte subsets from the AH and peripheral blood (PB) samples during the active phase of intraocular inflammation. Five inflammatory cytokines were measured in each AH sample and various clinical characteristics were also assessed.Results: VZV DNA was detected by real-time polymerase chain reaction (PCR) in AH from all the ARN patients, who showed higher CD8+ T lymphocytes population in AH than the AAU patients (p=0.006). CD4/CD8 ratios of T lymphocytes and the percentage of CD8+CD25+ T lymphocytes in AH were significantly lower in ARN than in AAU (p=0.006; p=0.012). In the ARN patients, the percentages of CD4+ and CD8+ T lymphocytes in AH were higher than those found in PB. The percentage of CD4+CD25+ T lymphocytes in AH was significantly higher than the proportion in PB in the AAU patients (p=0.001). Immunoregulatory cytokine Interleukin-10 in AH was significantly elevated in the ARN patients in comparison with the case of the AAU patients (p=0.036). In ARN, the copy number of VZV DNA in AH positively correlated with the percentage of CD8+ T lymphocytes in AH and negatively correlated with the CD4/CD8 ratio in AH during the course of disease treatment (p=0.009, r=0.92; p=0.039, r=-0.834).Conclusion: The ARN patients caused by VZV had different intraocular T lymphocyte subsets and cytokines profile than those of the non-viral infectious patients. High percentages of CD8+ T lymphocytes and low CD4/CD8 T cell ratios may be a potential biomarker for diagnosis of viral-infectious uveitis. T lymphocytes examination at the inflammatory sites has the potential to become a useful research tool for differentiating viral and non-viral uveitis.

Flow Cytometric Analysis of Peripheral Blood T-lymphocyte Subsets in Colon Cancer

2006 ◽  
Vol 2 (4) ◽  
pp. 409-414 ◽  
Author(s):  
Abdelfattah M. Attal . ◽  
Ashraf A. Tabll . ◽  
Mohamed F. Ismail . ◽  
Ashraf S. Ibrahim . ◽  
Ibrahim El-Dosoky .
Keyword(s):  
Colon Cancer ◽  
T Lymphocyte ◽  
Peripheral Blood ◽  
Lymphocyte Subsets ◽  
Flow Cytometric Analysis ◽  
T Lymphocyte Subsets ◽  
Flow Cytometric

The Levels of T Lymphocyte Subsets in Immune Thrombocytopenia Associated with Anti-GPIIb/IIIa- and/or Anti-GPIbα-Mediated Responses Are Differentially Sensitive to Dexamethasone

2018 ◽  
Vol 140 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Yang Chen ◽  
Yanyan Xie ◽  
Min Ruan ◽  
Jinning Shi
Keyword(s):  
T Lymphocytes ◽  
T Lymphocyte ◽  
Immune Thrombocytopenia ◽  
Lymphocyte Subsets ◽  
Response Rate ◽  
Control Group ◽  
Dexamethasone Treatment ◽  
T Lymphocyte Subsets ◽  
Cd8 T Lymphocytes ◽  
Significant Difference

Objective: The aim of this work was to investigate the influence of T lymphocyte subsets and platelet-specific autoantibodies on immune thrombocytopenia (ITP) with dexamethasone therapy. Methods: The samples were obtained from patients before therapy. T lymphocyte subsets were measured by flow cytometry, and platelet-specific autoantibodies were evaluated by modified monoclonal antibody immobilization of platelet antigen assay. Results: A total of 50 ITP patients were involved in the study. Twenty-three were anti-GPIbα antibody positive and were treated with dexamethasone, with a response rate of 47.8%. Twenty-seven cases were anti-GPIbα antibody negative, with a response rate of 77.8%. A significant difference was detected (p < 0.05). The level of CD4+ T lymphocytes in ITP patients was lower compared with the control group (p < 0.05). The level of CD8+ T lymphocytes was higher than that in the normal controls (p < 0.05). Additionally, the patients with a higher level of CD8+ T lymphocytes and lower level of CD4+ T lymphocytes were more likely to respond to dexamethasone treatment. Moreover, we observed that ITP patients associated with anti-GPIIb/IIIa antibodies had lower levels of CD4+ T lymphocytes and higher CD8+ T lymphocyte levels. Conclusions: There was insensitivity to dexamethasone treatment in ITP patients who were anti-GPIbα antibody positive. The detection of T lymphocyte subsets is useful in ITP patients for forecasting the outcome of dexamethasone treatment. There were some relationships between the different antibodies and the levels of T lymphocyte subsets.

Effect of Qigong Training on Proportions of T Lymphocyte Subsets in Human Peripheral Blood

1995 ◽  
Vol 23 (01) ◽  
pp. 27-36 ◽  
Author(s):  
Hoon Ryu ◽  
Chang Duk Jun ◽  
Bok Soo Lee ◽  
Byung Min Choi ◽  
Hyung Min Kim ◽  
...  
Keyword(s):  
T Lymphocytes ◽  
T Lymphocyte ◽  
Peripheral Blood ◽  
Lymphocyte Subsets ◽  
Human Peripheral Blood ◽  
Absolute Number ◽  
T Lymphocyte Subsets ◽  
Healthy Group ◽  
Cd8 T Lymphocytes ◽  
Trainee Group

The effect of Qigong training on proportions of T lymphocyte subsets was investigated in human peripheral blood. We observed that the ratio of CD4+/CD8+ T lymphocytes was increased as much as 50% in a trainee group who practiced Qigong training more than 5 months compared to a normal healthy group who did not practice. The absolute number of CD4+ T lymphocytes was also elevated in trainee group with 100 cells/mm 3 more than in normal healthy group. The positive correlation between the ratio of CD4+/CD8+ T lymphocytes and the ratio of CD4+45RA-/CD4+ CD45RA+ T lymphocytes was shown in the trainee group. In contrast, there was a negative correlation between the ratio of CD4+/CD8+ T lymphocytes and the ratio of CD8+CD57+/CD8+CD57- T lymphocytes in the trainee group. The data indicate that Qigong training affects the profile of lymphocyte subsets in human peripheral blood, especially the proportion of CD4+ T lymphocytes.

Flow cytometric analysis of T-lymphocyte subsets in cats

1991 ◽  
Vol 28 (3-4) ◽  
pp. 327-335 ◽  
Author(s):  
Gregg A. Dean ◽  
Sandra L. Quackenbush ◽  
Christopher D. Ackley ◽  
Max D. Cooper ◽  
Edward A. Hoover
Keyword(s):  
T Lymphocyte ◽  
Lymphocyte Subsets ◽  
Flow Cytometric Analysis ◽  
T Lymphocyte Subsets ◽  
Flow Cytometric

scholarly journals Changes in T Lymphocyte Subsets in Different Tumors Before and After Radiotherapy: A Meta-analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Qin Wang ◽  
Shangbiao Li ◽  
Simiao Qiao ◽  
Zhihao Zheng ◽  
Xiaotong Duan ◽  
...  
Keyword(s):  
Immune Response ◽  
T Lymphocytes ◽  
T Lymphocyte ◽  
Peripheral Blood ◽  
Lymphocyte Subsets ◽  
Meta Analysis ◽  
Tumor Patients ◽  
T Lymphocyte Subsets ◽  
Cd8 T Lymphocytes ◽  
Before And After

PurposeRadiation therapy (RT) induces an immune response, but the relationship of this response with tumor type is not fully understood. This meta-analysis further elucidated this relationship by analyzing the changes in T lymphocyte subsets in different tumors before and after radiotherapy.MethodsWe searched English-language electronic databases including PubMed, EMBASE, and the Cochrane Library to collect studies on the changes in peripheral blood CD3+ T lymphocytes, CD4+ T lymphocytes, and CD8+ T lymphocytes before and after radiotherapy in tumor patients from January 2015 to April 2021. The quality of the included literature was evaluated using the NOS scale provided by the Cochrane Collaboration, and statistical software RevMan 5.4 was used to analyze the included literature. P&lt;0.05 was considered to indicate statistical significance.ResultsA total of 19 studies in 16 articles involving 877 tumor patients were included. All data were collected within 1 month before or after radiotherapy. Meta-analysis showed that numbers of CD3+ T lymphocytes (SMD: -0.40; 95% CI [-0.75, -0.04]; p = 0.03) and CD4+ T lymphocytes (SMD: -0.43; 95% CI: [-0.85, -0.02]; p = 0.04) were significantly reduced after radiotherapy compared with before treatment, but there was no statistically significant difference for CD8+ T lymphocytes (SMD: 0.33; 95% CI: [-0.88, 0.74]; p = 0.12). Subgroup analysis showed that peripheral blood T lymphocytes decreased in head and neck cancer. However, in prostate cancer and breast cancer, there was no significant change in peripheral blood. 1 month after radiotherapy, it has a potential proliferation and activation effect on lymphocytes in esophageal cancer and lung cancer. The results showed that CD8+T lymphocytes increased in peripheral blood after SBRT. Radiotherapy alone reduced CD3+ T lymphocyte numbers.ConclusionsWithin 1 month of radiotherapy, patients have obvious immunological changes, which can cause apoptosis and reduction of T lymphocytes, and affect the balance of peripheral blood immune cells. The degree of immune response induced by radiotherapy differed between tumor types.

Sign in / Sign up

Export Citation Format

Share Document