title: [The effect of proliferation and differentiation of CD8+ T cells on the progression in patients co-infected with HIV and HCV].
abstract: OBJECTIVE
  To investigate the effect of proliferation and differentiation of CD8 T cells on the progression in patients co-infected with HIV and HCV.
  
  
  METHODS
  To address this issue, the presences of CD57 and CD28 in the surface of CD8+ T-cell were monitored using flow cytometry in 20 patients co-infected with HIV and HCV and 20 patients infected with HCV alone. The proliferation and differentiations of CD8+ T cell were compared hetween patients co-infected with HIV and HCV and ones with HCV infection alone, to clarify the association hetween the function of CU and the progression of disease.
  
  
  RESULTS
  A high presence (28.84 +/- 4.49)% of CD57 in the surface of CD8+ T-cell in the patients with HIV/HCV co-infections was found, comparing with a low presence (8.24% +/- 5.05%) of CU57 in the patients with HCV infection alone, the difference hetween these two groups is significant (P < 0.001). Moreover, A clear linear regression hetween the percentage of CD57CD8t T and HCV viral load (log) was identified (P = 0.023, R2 = 0.21). In addition, the differentiations of CD8 T cells were compared between patients with HIV/HCV co-infection and mono-HCV infection: the dominant cells in patients with mono-HCV infection were ones in intermediate stage, while, a late differentiation process of CU8 T cells might he associated with HIV/HCV co-infection.
  
  
  CONCLUSIONS
  The differences of proliferation and differentiation of CTL. are significant, between HIV/HCV co- infection and mono-HCV infection. Lower proliferation and late stage of differentiations of CD8 T cell might affect the clearance of hepatitis C virus, weaken CU immunological response and induce chronic inflammation, finally will accelerate the progression of HCV infection.
authors.affiliation: Beijing Youan Hospital, Capital Medical University, Beijing 100069, China.
authors.forename: Yong-hong
authors.initials: YH
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Li-na
authors.initials: LN
authors.lastname: Ma
authors.forename: Ling-xian
authors.initials: LX
authors.lastname: Shi
authors.forename: Yi
authors.initials: Y
authors.lastname: Jin
authors.forename: Zhi-min
authors.initials: ZM
authors.lastname: He
authors.forename: Xiao-dan
authors.initials: XD
authors.lastname: Zhang
authors.forename: Xin-yue
authors.initials: XY
authors.lastname: Chen
mesh_terms: D000328:Adult; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology* / Q000276:immunology; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D018450:Disease Progression; D005260:Female; D015658:HIV Infections / Q000150:complications / Q000276:immunology / Q000473:pathology / Q000503:physiopathology*; D015497:HIV-1 / Q000276:immunology / Q000502:physiology; D016174:Hepacivirus / Q000276:immunology / Q000502:physiology; D006526:Hepatitis C / Q000150:complications / Q000276:immunology / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013601:T-Lymphocytes / Q000276:immunology; D055815:Young Adult