[Triglyceride-glucose index changes after one year of antiretroviral therapy].

Background: Antiretroviral therapy (ART) is highly effective for treating HIV, but it is associated with metabolic alterations, such as insulin resistance (IR), which can be assessed using HOMA-IR, or using more accessible alternatives such as triglyceride-glucose (TG) index, which has been validated in Mexican population with a cut-off point of 4.68, with sensitivity of 96.5% and specificity of 85%. However, there are no studies analyzing the applicability and changes of the TG index after ART initiation in HIV-positive patients. Objective: To describe the frequency of IR using the TG index in HIV patients without previous treatment (naive) before and one year after starting ART. Material and methods: Comparative cross-sectional study. The Internal Medicine and Infectology Department records of patients recently diagnosed with HIV from a third-level hospital during 2010-2025 were reviewed. Biochemical, clinical, and anthropometric data were collected at baseline and one year after treatment initiation. Variables were recorded and analyzed blindly using SPSS, v. 25, with nonparametric statistics. It was considered significant a p with a < 0.05 value. Results: 86 cases, 88.4% men, with a median age of 34.5 years (IQR 24-44.25), had a TG index of 4.70 (IQR 4.55-4.89) at baseline and 4.77 (IQR 4.63-4.89) at 1 year, with a statistically significant increase (p = 0.025). Conclusions: Out of patients with naive HIV and normal baseline TG index, 64% exhibited an elevation above the IR threshold (> 4.68) after one year of ART. In contrast, among those with an already elevated baseline TG index, 72% remained elevated after one year of treatment.