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• W2045277592 abstract "HIV lipodystrophy - characterized by peripheral lipoatrophy, with or without central fat accumulation - confers increased metabolic risk. However, the functional activity of HIV lipodystrophic tissue in relation to metabolic risk has yet to be fully explored in vivo through the use of non-invasive imaging techniques. This study assesses the relationship between FDG uptake in various fat depots and metabolic/immune parameters among subjects with HIV lipodystrophy.Lipodystrophic men on antiretroviral therapy underwent whole-body (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET)/computed tomography scans and detailed metabolic/immune phenotyping.FDG uptake in the subcutaneous adipose tissue (SAT) of the extremities (mean standardized uptake value [SUV] of the arm and leg SAT) was found to correlate with the degree of peripheral lipoatrophy (r=0.7; P=0.01). Extremity SAT FDG uptake was positively associated with homeostasis model assessment of insulin resistance (HOMA-IR; r=0.6; P=0.02) and fasting hyperinsulinaemia (r=0.7; P=0.01), while fat percentage of extremities was not. Furthermore, extremity SAT FDG uptake was significantly associated with CD4(+) T-cell count (r=0.6; P=0.05). In multivariate modelling for HOMA-IR, extremity SAT FDG uptake remained significant after controlling for body mass index and tumour necrosis factor-α (R(2) for model =0.71, P=0.02; SUV in the extremity SAT β-estimate 12.3, P=0.009).In HIV lipodystrophic patients, extremity SAT FDG uptake is increased in association with reduced extremity fat and may contribute to insulin resistance. Non-invasive assessments of in situ inflammation using FDG-PET may usefully complement histological and gene expression analyses of metabolic dysregulation in peripheral fat among HIV-positive patients." @default.
• W2045277592 created "2016-06-24" @default.
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• W2045277592 date "2013-02-01" @default.
• W2045277592 modified "2023-09-26" @default.
• W2045277592 title "Increased Fdg Uptake in Association with Reduced Extremity Fat in HIV Patients" @default.
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• W2045277592 doi "https://doi.org/10.3851/imp2420" @default.
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