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 di...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.展开更多
Objective:To investigate the changes of Mg^(2+) levels in serum and peripheral blood mononuclear cells(PBMCs)of patients with COVID-19 and its effects on the functions of CD8^(+)T lymphocytes and NK cells.Methods:A to...Objective:To investigate the changes of Mg^(2+) levels in serum and peripheral blood mononuclear cells(PBMCs)of patients with COVID-19 and its effects on the functions of CD8^(+)T lymphocytes and NK cells.Methods:A total of 165 COVID-19 patients hospitalized in Ezhou Central Hospital from January 20 to February 20,2020 were divided into mild/common group(98 cases)and severe/critical group(67 cases).At the same time,34 healthy persons were selected as the control group.Peripheral blood was collected and PBMCs were isolated,the level of Mg^(2+) in serum and PBMCs was detected.The subsets of CD8^(+)T lymphocytes and NK cell and the expression levels of their surface inhibitory molecular PD-1 and activator molecular NKG2D were detected by flow cytometry.The correlation between Mg^(2+) concentration and the expression levels of PD-1 and NKG2D was also analyzed.Results:Compared with the control group,the concentration of Mg^(2+) in serum and PBMCs,the counts of CD8^(+)T lymphocytes and NK cell in patients with mild/common and severe/critical groups were significantly reduced(P<0.05),while the expression level of surface inhibitory molecular PD-1 were significantly increased(P<0.05),while the expression level of the activation molecule NKG2D were significantly decreased(P<0.05).However,the changes of the above indicators in patients with severe/critical group were greater than those in the mild/common group(P<0.05).In addition,the Mg^(2+) concentration in COVID-19 patients was negatively correlated with the expression level of PD-1 on CD8^(+)T lymphocytes and NK cells(P<0.05),and positively correlated with the expression levels of NKG2D(P<0.05).Conclusion:The concentration of Mg^(2+) in the serum and PBMCs of COVID-19 patients is significantly reduced,which may cause the function of CD8^(+)T lymphocytes and NK cells to be inhibited.展开更多
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 ...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/mm<sup>3</sup> and the mean CD4+ count was ±191/mm<sup>3</sup>. 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/mm<sup>3</sup> (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.展开更多
文摘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.
文摘Objective:To investigate the changes of Mg^(2+) levels in serum and peripheral blood mononuclear cells(PBMCs)of patients with COVID-19 and its effects on the functions of CD8^(+)T lymphocytes and NK cells.Methods:A total of 165 COVID-19 patients hospitalized in Ezhou Central Hospital from January 20 to February 20,2020 were divided into mild/common group(98 cases)and severe/critical group(67 cases).At the same time,34 healthy persons were selected as the control group.Peripheral blood was collected and PBMCs were isolated,the level of Mg^(2+) in serum and PBMCs was detected.The subsets of CD8^(+)T lymphocytes and NK cell and the expression levels of their surface inhibitory molecular PD-1 and activator molecular NKG2D were detected by flow cytometry.The correlation between Mg^(2+) concentration and the expression levels of PD-1 and NKG2D was also analyzed.Results:Compared with the control group,the concentration of Mg^(2+) in serum and PBMCs,the counts of CD8^(+)T lymphocytes and NK cell in patients with mild/common and severe/critical groups were significantly reduced(P<0.05),while the expression level of surface inhibitory molecular PD-1 were significantly increased(P<0.05),while the expression level of the activation molecule NKG2D were significantly decreased(P<0.05).However,the changes of the above indicators in patients with severe/critical group were greater than those in the mild/common group(P<0.05).In addition,the Mg^(2+) concentration in COVID-19 patients was negatively correlated with the expression level of PD-1 on CD8^(+)T lymphocytes and NK cells(P<0.05),and positively correlated with the expression levels of NKG2D(P<0.05).Conclusion:The concentration of Mg^(2+) in the serum and PBMCs of COVID-19 patients is significantly reduced,which may cause the function of CD8^(+)T lymphocytes and NK cells to be inhibited.
文摘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/mm<sup>3</sup> and the mean CD4+ count was ±191/mm<sup>3</sup>. 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/mm<sup>3</sup> (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.
