Abstract
Raltegravir (RAL) is considered one of the better-tolerated antiretroviral medications, due to limited side effects and minimal drug-drug interactions. Matherials and Methods: We retrospectively evaluated 96 HIV+, over 60 years old, experienced patients who had switched from any antiretroviral drug to raltegravir-based nuc-sparing or standard nucleoside-backbone regimens. A control group with patients aged under 60 years old was included. The median age of the patients was 66 years (IQR 10.5) (77 M, 19 F); the median time horizon of follow-up was 4 years (IQR 5). HIV-RNA at baseline was undetectable for more than 6 months in most of the patients. Median CD4+ count was 453 cells/mmc (IQR 379). 49 patients had AIDS history. All the patients were assuming concomitant medications. No adverse effect attributed to the use of raltegravir was reported in the medical records. Only 2 patients presented virological failure, whereas viremic blips were observed in 10 patients. After switching to RAL-containing regimens triglycerides values showed a statistically significant reduction from a median value of 172 (IQR 105.5) mg/dl to 129 mg/dl (IQR 73) (p=0,0001). Switching to a standard regimens was associated with a marked reduction of triglycerides. Cholesterol levels were reduced at the time of follow-up (T2) but no significant modifications were observed when patients which had introduced drugs to treat dislypidemia were removed from the analysis; in contrast, triglycerides reduction was also confirmed in this sub-group. Patients presented higher levels of CD4+ at T2 and reduced platelet count [from 230 300/mmc (SD 123 527) to 197 125/mmc (SD 66 377), p=0,04]. Similar trends were observed in younger patients. RAL-containing regimens are safe and highly effective in the older population. RALtreatment is associated with the reduction of triglycerides and platelets count in the older population.
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