Molecular Crossroads of Frailty and HIV.

An epidemiological transition is occurring regarding Human Immunodeficiency Virus (HIV) infection. This phenomenon, explained by several mechanisms (e.g.: physiologic changes, pharmacologic advances, sexual behaviors), is demonstrated by a significant increase in the number of patients aged 50 years and older diagnosed with this infection. The immunological changes observed in HIV-infected patients may prompt the appearance of an accelerated aging process as well as that of comorbidities and other pathological entities commonly diagnosed in older adults. Frailty is a biologic syndrome characterized by a multi-systemic decrease of the individual's physiologic and homeostatic reserves, leading to diminished resistance against stressors and increased vulnerability. The purpose of this review is to describe the common molecular changes seen in both frailty and HIV-1 infection, offering an in-depth analysis of their pathophysiology and specifying common processes where their pathways meet.