ABSTRACT
HIV patients are predisposed to the development of hypertriglyceridemia and hypercholesterolemia as a result of both viral infection and HIV infection therapy, especially the protease inhibitors. Chemokines and cytokines are present at sites of inflammation and can influence the nature of the inflammatory response in atherosclerosis. We investigated the correlation between biochemical variables and beta-chemokines (MIP-1alpha and RANTES) and the apolipoprotein E genotype in HIV-infected individuals. The apolipoproteins were measured by nephelometry. Triglycerides and total cholesterol were determined by standard enzymatic procedures. The beta-chemokines were detected by ELISA. The genetic category of CCR5 and apolipoprotein E were determined by PCR amplification and restriction enzymes. Immunological and virological profiles were assessed by TCD4+ and TCD8+ lymphocyte counts and viral load quantification. Positive correlations were found between apo E and CD8+ (p = 0.035), apo E and viral load (p = 0.018), MIP-1alpha and triglycerides (p = 0.039) and MIP-1a and VLDL (p = 0.040). Negative correlations were found between viral load and CD4+ (p = 0.05) and RANTES and CD4+ (p = 0.029). The beta-chemokine levels may influence lipid metabolism in HIV-infected individuals.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Apolipoproteins E/blood , Chemokine CCL5 , HIV Infections/blood , Lipoproteins/blood , Macrophage Inflammatory Proteins , Apolipoproteins E/genetics , Apolipoproteins E/metabolism , Biomarkers/blood , Chemokine CCL5 , Enzyme-Linked Immunosorbent Assay , Genotype , HIV Infections/metabolism , Lipoproteins/metabolism , Macrophage Inflammatory Proteins , Nephelometry and Turbidimetry , Polymerase Chain Reaction , /blood , Viral LoadABSTRACT
Neste trabalho, investigamos concentração da vitamina B12 e folato, considerando-se a influência dos genótipos da metilenotetrahidrofolato redutase, o perfil imunológico e a terapia antiretroviral utilizada na população brasileira portadora do HIV. Um grupo de 86 indivíduos portadores do HIV-1 e 29 doadores de sangue foram recrutados para compor a casuística. Entre os infectados pelo HIV-1, observou-se menor concentração de B12 no grupo com maior número de linfócitos TCD4+. Não encontramos diferença na distribuição genotípica para as mutações MTHFR C677T e A1298C entre infectados e não infectados pelo HIV-1. Indivíduos portadores do HIV, genótipo C677C, apresentaram concentrações menores de B12 em relação ao grupo controle de mesmo genótipo. A terapia antiretroviral não mostrou qualquer influência nos valores de folato e vitamina B12. Estudos adicionais são necessários para reavaliar a prevalência de menores concentrações de B12 e folato e de hiperhomocisteinemia na população portadora do HIV sob a ótica do uso de HAART e da melhoria na sobrevida dos pacientes.