Peripheral T-cell apoptosis is not differentially affected by antiretroviral regimens in HIV-infected patients.
Antivir Ther
; 18(8): 1021-5, 2013.
Article
em En
| MEDLINE
| ID: mdl-23732862
ABSTRACT
BACKGROUND:
HIV-induced CD4(+) and CD8(+) T-cell apoptosis decreases upon start of combination antiretroviral therapy (cART). Although in vitro evidence suggests an anti-apoptotic effect of protease inhibitors (PIs) as opposed to non-nucleoside reverse transcriptase inhibitors (NNRTIs), in vivo studies are inconclusive about effects of differential cART regimens on T-cell apoptosis.METHODS:
Peripheral T-cell apoptosis was evaluated in a cross-sectional study including 20 patients on PI- and 19 on NNRTI-based combination antiretroviral therapy (cART), all with backbone therapy of tenofovir and emtricitabine and undetectable viral loads 6 months before inclusion. Spontaneous T-cell apoptosis was measured in freshly isolated peripheral blood mononuclear cells (<4 h after venipuncture) using annexin V, propidium iodide and staining for caspase activity and levels of the anti-apoptotic protein Bcl-2.RESULTS:
The groups were comparable in general- and HIV-specific characteristics. In addition, T-cell activation was similar in both groups. We observed no difference in T-cell apoptosis as measured by annexin V, propidium iodide or caspase staining between PI- and NNRTI-treated patients. Interestingly, the level of anti-apoptotic protein Bcl-2 was higher in PI-treated than in NNRTI-treated patients.CONCLUSIONS:
In this cross-sectional study on HIV-infected patients, direct ex vivo spontaneous T-cell apoptosis rates are not differentially affected by NNRTI- or PI-based cART.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linfócitos T CD4-Positivos
/
Infecções por HIV
/
Apoptose
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Linfócitos T CD8-Positivos
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article