Paula Debroy1, Myung Sim2, Kristine M Erlandson3, Julian Falutz4, Carla M Prado5, Todd T Brown6, Giovanni Guaraldi7, Jordan E Lake1,2. 1. University of Texas Health Sciences Center, Houston, TX, USA. 2. University of California Los Angeles, Los Angeles, CA, USA. 3. University of Colorado, Aurora, CO, USA. 4. McGill University, Montreal, Canada. 5. Hospital Beatriz Ângelo, Loures, Portugal. 6. Johns Hopkins University, Baltimore, MD, USA. 7. University of Modena and Reggio Emilia, Modena, Italy.
Abstract
OBJECTIVES: Although weight gain on ART is common, the long-term trajectory of and factors affecting increases in fat mass in people living with HIV are not well described. METHODS: Men and women living with HIV in the Modena HIV Metabolic Clinic underwent DXA scans every 6-12 months for up to 10 years (median 4.6 years). Regression modelling in both combined and sex-stratified models determined changes in and clinical factors significantly associated with trunk and leg fat mass over the study period. RESULTS: A total of 839 women and 1759 men contributed two or more DXA scans. The baseline median age was 44 years and BMI 22.9 kg/m2; 76% were virologically suppressed on ART at baseline. For both sexes, trunk and leg fat consistently increased over the study period, with mean yearly trunk and leg fat gain of 3.6% and 7.5% in women and 6.3% and 10.8% in men, respectively. In multivariate analysis, factors associated with greater fat mass included female sex, per-year ART use (specifically tenofovir disoproxil fumarate and integrase strand transfer inhibitor therapy), per-unit BMI increase, no self-reported physical activity and CD4 nadir <200 cells/mm3. CONCLUSIONS: Among people living with HIV on ART, trunk and leg fat mass increased steadily over a median of 4.6 years of follow up, particularly among women. After controlling for traditional risk factors, HIV- and ART-specific risk factors emerged.
OBJECTIVES: Although weight gain on ART is common, the long-term trajectory of and factors affecting increases in fat mass in people living with HIV are not well described. METHODS:Men and women living with HIV in the Modena HIV Metabolic Clinic underwent DXA scans every 6-12 months for up to 10 years (median 4.6 years). Regression modelling in both combined and sex-stratified models determined changes in and clinical factors significantly associated with trunk and leg fat mass over the study period. RESULTS: A total of 839 women and 1759 men contributed two or more DXA scans. The baseline median age was 44 years and BMI 22.9 kg/m2; 76% were virologically suppressed on ART at baseline. For both sexes, trunk and leg fat consistently increased over the study period, with mean yearly trunk and leg fat gain of 3.6% and 7.5% in women and 6.3% and 10.8% in men, respectively. In multivariate analysis, factors associated with greater fat mass included female sex, per-year ART use (specifically tenofovir disoproxil fumarate and integrase strand transfer inhibitor therapy), per-unit BMI increase, no self-reported physical activity and CD4 nadir <200 cells/mm3. CONCLUSIONS: Among people living with HIV on ART, trunk and leg fat mass increased steadily over a median of 4.6 years of follow up, particularly among women. After controlling for traditional risk factors, HIV- and ART-specific risk factors emerged.
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