ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of long-term highly active antiretroviral therapy (HAART) on the abnormal activation state and immune reconstitution in HIV-1 infected individuals.</p><p><b>METHODS</b>CD4(+)T, CD8(+)T, CD8(+) CD38(+)T, CD8(+)HLADR(+)T and NK cell counts in the peripheral blood of 55 cases of HIV-1 infected individuals were measured by flow cytometry before and after HAART, and 30 healthy individuals served as controls.</p><p><b>RESULT</b>Compared to healthy individuals, the CD4(+)T and NK cells decreased (P < 0.05) and CD8(+)T and CD8(+)HLADR(+)T cells increased significantly (P < 0.05) in HIV-1 infected individuals before HAART. After HAART, CD4(+)T and NK cells were recovered (P < 0.05), but still lower than normal (P < 0.05); CD4(+)T cell count in HIV-1 infected individuals remained stable at 1, 3 and 5 years after treatment, there were no significant differences among each groups; NK cell count had a downward trend with HAART (P < 0.05), there were statistical differences between 1-year and 5-year-HAART groups(P < 0.05). CD8(+)HLADR(+)T cells decreased promptly (P < 0.05), there were statistical differences between before and after HAART groups, 1-year and 5-year, 3-year and 5-year HAART groups (P < 0.05). CD8(+)CD38(+)T cells declined slowly, with no statistical differences amont each groups.</p><p><b>CONCLUSION</b>HAART can effectively reduce abnormal immune activation in HIV-1 infected individuals and achieve immune reconstitution to a certain degree.</p>
Subject(s)
Adult , Female , Humans , Male , Middle Aged , Young Adult , Antiretroviral Therapy, Highly Active , Case-Control Studies , Follow-Up Studies , HIV Infections , Drug Therapy , Allergy and Immunology , HIV-1 , Lymphocyte Activation , T-Lymphocytes , Allergy and Immunology , Viral LoadABSTRACT
Objective To evaluate the immune reconstitution of HIV-1 infected individuals after long-term highly antiretroviral therapy (HAART). Methods Twenty-five HIV-1 infected individuals receiving HAART, 17 without HAART and 15 healthy controls were included in the study. CD4 +T, CD8 +T,CD8/human leukocyte antigen DR (HLADR) + T, CD8/CD38 +T cells, and the expression of CD127 on CD3 +T cells from peripheral blood samples were measured by flow cytometry. IL-7 in peripheral blood was measured by enzyme-linked immunosorbort assay (ELISA) in HAART group. t test was performed to compare the measurement data among the groups. Results Before HAART, the count of CD4 + T cells in HIV-1 infected group was lower than that of the healthy control (t =9. 12, P ＜0. 01 ), while the counts of CD8 + T,CD8/HLADR+T, and CD8/CD38 +T cells were higher than those of the healthy control (t = 4.48, 4.89 and 3.88, P＜0. 01 ). Ater 7 years' antiviral therapy, CD4 +T cells increased, CD8 +T cells decreased, but both of them didn' t reach to the normal levels ( t = 2.66 and 2.43, P ＜ 0.05 ). While the counts of CD8/HLADR+T cells and CD8/CD38 +T cells almost reached to the normal levels (t = 0. 86 and 1.39, P ＞0.05). Before HAART, the concentration of IL-7 in HIV-1 infected group was higher than that in healthy controls (t =5.31, P ＜0.01 ). It decreased with HAART, but was still higher than the normal level (t =2. 81, P ＜ 0. 05 ). The expression of CD127 on CD3 + CD8 + T cells in non-HAART group was significantly lower than that in healthy control ( t =- 6.01, P ＜ 0.01 ), while that in HAART group was higher ( t = 2.32,P ＜0.05), but still not reached to the normal level ( t = 4.49, P ＜ 0. 05 ). CD127 expression on ( CD45RA + ) CD3 + CD8 + T cells almost increased to the normal level ( t= 0. 28, P ＞ 0. 05 ), while that on ( CD45RO + ) CD3 + CD8 + T cells was still remarkably lower than the normal ( t = 4. 86, P ＜ 0. 05 ). Conclusion Long-term HAART can partially restore the count and function of lymphocyte subsets in HIV-1 infected individuals, and the abnormal immune activation can be inhibited.
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of highly active antiretroviral therapy (HAART) on plasma levels of MSP and MCP-1 in AIDS patients.</p><p><b>METHODS</b>Forty Chinese AIDS patients were treated with HAART for 3 months and 84 German AIDS patients with HAART for 3 to 6 years. The pre-treatment and post-treatment plasma levels of MSP and MCP-1 were measured by enzyme-linked immunosorbent assay (ELISA), and their correlations with CD4+ cell counts and viral loads were analyzed.</p><p><b>RESULT</b>The mean levels of MCP-1 were significantly higher and MSP were significantly lower in HIV-infected patients compared with the HIV-negative controls (P <0.01). After HAART for three months, there were no significant changes in the levels of these cytokines. But after long-term HAART (for 3 to 6 y), the level of MCP-1 was increased and that of MSP decreased significantly (P<0.01). There was a negative correlation between MSP and MCP-1 levels, and the same for MSP level and CD4+ cell counts; while there was a positive correlation between MCP-1 levels and CD4+ cell counts.</p><p><b>CONCLUSION</b>The changed plasma levels of MSP and MCP-1 are associated with HIV-1 infection and HAART may reverse the levels of these two cytokines.</p>