title: Disorders of fat partitioning in treated HIV-infection.
abstract: HIV-associated lipodystrophy is clinically characterized by body fat changes including subcutaneous fat loss (lipoatrophy) with or without truncal fat accumulation (lipohypertrophy). Thymidine nucleoside reverse transcriptase inhibitors, stavudine and to a lesser extent zidovudine, are major contributors for lipoatrophy. Drug factors are not clear for lipohypertrophy. Restoration to health with effective viral suppression and weight gain may be factors playing significant roles in lipohypertrophy. Mitochondrial dysfunction and inflammation in subcutaneous adipose tissue are key factors in the pathogenesis of HIV-associated lipoatrophy. The pathogenesis of lipohypertrophy is less well understood. Switching from thymidine nucleoside reverse transcriptase inhibitors restores subcutaneous fat in patients with HIV-associated lipoatrophy, but improvement is slow and limited. Surgical filling cosmetically improves facial lipoatrophy. Exercise and diet may reduce increased visceral adipose tissue. Liposuction may be useful to remove superficial, localized fat accumuli.
authors.affiliation: Infectious Diseases Unit, Hospital Clínic-Institut d'Investigaciones Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain. esteban@fundsoriano.es
authors.forename: Esteban
authors.initials: E
authors.lastname: Martínez
mesh_terms: D000273:Adipose Tissue / Q000187:drug effects* / Q000473:pathology / Q000503:physiopathology; D044966:Anti-Retroviral Agents / Q000009:adverse effects* / Q000627:therapeutic use; D001284:Atrophy; D050218:Body Fat Distribution; D015658:HIV Infections / Q000188:drug therapy*; D039682:HIV-Associated Lipodystrophy Syndrome / Q000473:pathology / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D006984:Hypertrophy; D018894:Reverse Transcriptase Inhibitors / Q000009:adverse effects / Q000627:therapeutic use
chemical_list: D044966:Anti-Retroviral Agents; D018894:Reverse Transcriptase Inhibitors