• R Manfredi and L Calza.
• Dipartimento di Medicina Clinica Specialistica e Sperimentale, Sezione di Malattie Infettive, Universita degli Studi Alma Mater, Policlinico S.Orsola-Malpighi, Bologna, Italy.
• Infez Med. 2004 Sep 1;12(3):152-73.

AbstractThe life expectancy of HIV-infected patients treated with highly active antiretroviral therapy (HAART) has increased and now approaches that of the general population, while also the definition of AIDS has lost most of its epidemiological and clinical significance, due to the immune recovery obtained by large-scale administration of potent antiretroviral combinations. The prolonged survival of subjects with HIV infection, and the late recognition of patients with occult disease, will contribute to a progressive increase in disease incidence in patients aged 50-60 years or more in the near future. Unfortunately, the large majority of therapeutic trials addressed to assess and compare novel antiretroviral molecules and associations, as well as studies regarding antimicrobial chemotherapy of prophylaxis of AIDS-related opportunistic infections, have just advanced age and/or underlying chronic disorders (i.e. liver or kidney failure) among main exclusion criteria, or do not allow the extrapolation of data regarding older subjects, compared with younger ones. The limited data available until now show that antiretroviral therapy has a similar virological efficacy in the elderly compared with younger patients. However, immune reconstitution is often slower and blunted according to age progression, although some well-designed studies have shown that the thymic function (which controls most quantitative and functional immune recovery) can be preserved in adults and even in advanced age. When facing older subjects, the Infectious Disease specialist has to pay careful attention to any chronic end-organ disorders, all possible pharmacological interactions, and overwhelming toxicity due to underlying drug therapies: all these issues may significantly interfere with HAART efficacy, patients' adherence to prescribed treatments, and frequency and severity of untoward events. Guidelines for antiretroviral therapy and treatment and prophylaxis of AIDS-associated illnesses should be appropriately updated, given the novel features due to the emerging increase in the mean age of the HIV-infected patient population.

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