title: Plasma selenium concentration and glutathione peroxidase activity in HIV-1/AIDS infected patients: a correlation with the disease progression.
abstract: OBJECTIVE
  To find a correlation, if any, between the concentration of plasma selenium and erythrocyte activity in HIV-infected patients with the progression of the disease.
  
  
  METHODS
  Plasma selenium concentration and erythrocyte glutathione peroxidase (GSH-Px) activity were measured in 62 HIV-1 seropositive patients before commencing antiretroviral drug. Thirty (30) age-matched and apparently healthy HIV-1/11 seronegative subjects were recruited as control subjects. HIV-1 seropositive patients were classified according to the Centre for Disease Control and Prevention (CDC) Criteria.
  
  
  RESULTS
  The mean plasma selenium concentrations of 0.53+/-0.06_mol/L and 0.71+/-0.10_mol/L were significantly reduced (P<0.001) in HIV- 1 patients with CD4+ count of <200 lym/mm3 and that of 200-499 lym/mm3 respectively when compared with the controls which is 1.01+/-0.10_mol/L. The mean erythrocyte GSH-Px activity of 15.1+/-2.4 U/g Hb and 20.7+/-3.7U/g Hb of HIV-1 seropositive patients with CD4+ count of <200 lym/mm3 and 200-499 lym/mm3 respectively were significantly reduced (P<0.001) compared with 31.5+/-4.5 U/g Hb for the control. Our results clearly show that there is reduced scavenging antioxidant i.e Selenium and GSH-Px which will lead to oxidative stress in the HIV-1 patients when compared with controls, and decrease significantly with the progression of disease, i.e. AIDS<symptomatics<asymptomatics<controls. HIV-1 subtype variants have no significant influence in both parameters.
  
  
  CONCLUSIONS
  The inclusion of selenium micronutrient which is essential for the activity of erythrocyte GSH-Px as an adjuvant in the management of HIV seropositive patients to prevent additional damage that can be caused by free radicals will be of immense benefit.
authors.affiliation: Department of Chemical Pathology, College of Health Sciences, Ladoke Akintola University of Technology, Osogbo, Nigeria.
authors.forename: P S
authors.initials: PS
authors.lastname: Ogunro
authors.forename: T O
authors.initials: TO
authors.lastname: Ogungbamigbe
authors.forename: P O
authors.initials: PO
authors.lastname: Elemie
authors.forename: B E
authors.initials: BE
authors.lastname: Egbewale
authors.forename: T A
authors.initials: TA
authors.lastname: Adewole
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000097:blood* / Q000276:immunology / Q000821:virology; D000328:Adult; D015415:Biomarkers / Q000097:blood; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D003430:Cross-Sectional Studies; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005979:Glutathione Peroxidase / Q000097:blood*; D015483:HIV Antibodies / Q000276:immunology*; D015497:HIV-1 / Q000276:immunology*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012643:Selenium / Q000097:blood*
chemical_list: D015415:Biomarkers; D015483:HIV Antibodies; D005979:Glutathione Peroxidase; D012643:Selenium