Oxidative stress in blood of HIV infected patients

Clinica Chimica Acta; International Journal of Clinical Chemistry
M RepettoS Llesuy

Abstract

The oxidative stress in human erythrocytes was studied in asymptomatic and symptomatic patients infected by the human immunodeficiency virus (HIV), and patients with the acquired immunodeficiency syndrome (AIDS). tert-Butyl hydroperoxide initiated chemiluminescence, superoxide dismutase and catalase activities, and total glutathione were evaluated in the erythrocytes and the total antioxidant capacity in the plasma of control, patients infected with HIV that have not yet developed acquired immunodeficiency syndrome, and patients in the later stage of AIDS. tert-Butyl hydroperoxide initiated chemiluminescence was increased by 33% in asymptomatic (stage A1) and symptomatic patients (stage B2) infected with HIV and 82% for patients with AIDS (stage B3) (P < 0.05). While catalase activity did not show any difference between patients and controls, other indices showed differences that, in some cases, reached statistical significance. Superoxide dismutase activity was increased by 24% in stages A1 and B2 of HIV infection and 65% in patients in stage B3 (P < 0.05). Glutathione was decreased by 20% in stages A1 and B2, and by 32% in stage B3 patients (P < 0.05). Total plasma antioxidant capacity was increased in 30 and 57% for the asym...Continue Reading

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