Depression and Coping Are Associated with Failure of Adherence to Antiretroviral Therapy Among People Living with HIV/AIDS.

Sustained adherence to antiretroviral therapy (ART) is critical in the prevention of drug resistance, disease progression, and death. We aimed to assess the level of ART adherence among 112 people living with HIV/AIDS (PLWHA) and to determine associated factors with that. The socioeconomic aspects were evaluated by medical records; the adherence, depression, and coping by specific questionnaires. Although most patients have undetectable viral load (79%) and CD4+ T count >500 cells/mm3 (65%), two-third (66%) of them exhibited a lower adherence, which was directly associated with some signs of depression (p = .006) presented by 65% of them. Some risk factors to presence of depression were female gender (p = .008) and low income (p = .013). In addition, most participants who reported tobacco (33%) and alcohol (29%) consumption had a low or intermediate adherence score. Among the coping strategies, self-control (p = .029), social support (p = .006), problem solving (p = .013), and positive reappraisal (p = .049) led to an improvement in adherence.

Identification of a Specific miRNA Profile in HIV-Exposed Seronegative Individuals.

OBJECTIVE: MicroRNAs (miRNAs) are small noncoding RNAs involved in the posttranscriptional regulation of gene expression that play important roles in viral infections. Alterations of specific miRNAs are described in HIV infection, suggesting a role for miRNAs in pathogenesis of this disease. We verified whether a particular miRNA signature could be identified in natural resistance to HIV-1. METHODS: Expression level of 84 miRNAs was analyzed by RT-qPCR in plasma and unstimulated peripheral blood mononuclear cell (PBMC) of 30 seronegative individuals repeatedly exposed to HIV-1 (HESN), 30 HIV seropositive subjects (HIV+), and 30 healthy controls (HC). Results were confirmed by individual RT-qPCR in in vitro HIV-1-infected PBMC and in their cell culture medium. Dicer and Drosha expression was analyzed in basal PBMC. RESULTS: Whereas Dicer and Drosha expression was comparable in HESN, HIV+ and HC, several miRNAs were upregulated both in HESN and HIV+ compared with HC. Furthermore, miRNA-29a and miR-223 were upregulated in both unstimulated PBMC and plasma of HESN alone; their expression was reduced upon in vitro HIV-1 infection of HESN PBMC indicating that, upon infection, they are secreted in the extracellular milieu. These results were confirmed by individual qPCR. CONCLUSIONS: Our studies demonstrate that HIV-1 exposure modifies miRNAs expression even in the absence of productive infection. Because those miRNAs that are specifically increased only in HESN have been known to reduce HIV-1 replication, their modulation could represent an important mechanism in resistance to HIV-1 infection.