Obesity (Silver Spring, Md.) · 2013
Body composition determinants of metabolic phenotypes of obesity in nonobese and obese postmenopausal women.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Peppa Melpomeni, Koliaki Chrysi, Papaefstathiou Athanasios, Garoflos Efstathios, Katsilambros Nicholas, Raptis Sotirios A, Hadjidakis Dimitrios I, Dimitriadis George D
Аннотация
OBJECTIVE: Although obesity is typically associated with increased cardiovascular risk, a subset of obese individuals display a normal metabolic profile ("metabolically healthy obese," MHO) and conversely, a subset of nonobese subjects present with obesity-associated cardiometabolic abnormalities ("metabolically obese nonobese," MONO). The aim of this cross-sectional study was to identify the most important body composition determinants of metabolic phenotypes of obesity in nonobese and obese healthy postmenopausal women.
DESIGN AND METHODS: We studied a total of 150 postmenopausal women (age 54 ± 7 years, mean ± 1 SD). Based on a cardiometabolic risk score, nonobese (body mass index [BMI] ≤ 27) and obese women (BMI > 27) were classified into "metabolically healthy" and "Требует внимания" phenotypes. Total and regional body composition was assessed with dual-energy X-ray absorptiometry (DXA).
RESULTS: In both obese and nonobese groups, the "Требует внимания" phenotypes were characterized by frequent bodyweight fluctuations, higher biochemical markers of insulin resistance, hepatic steatosis and inflammation, and higher anthropometric and DXA-derived indices of central adiposity, compared with "Работает" phenotypes. Indices of total adiposity, peripheral fat distribution and lean body mass were not significantly different between "Работает" and "Требует внимания" phenotypes. Despite having increased fat mass, MHO women exhibited comparable cardiometabolic parameters with healthy nonobese, and better glucose and lipid levels than MONO. Two DXA-derived indices, trunk-to-legs and abdominal-to-gluteofemoral fat ratio were the major independent determinants of the "Требует внимания" phenotypes in our cohort.
CONCLUSIONS: The "metabolically obese phenotype" is associated with bodyweight variability, multiple cardiometabolic abnormalities and an excess of central relative to peripheral fat in postmenopausal women. DXA-derived centrality ratios can discriminate effectively between metabolic subtypes of obesity in menopause.
DESIGN AND METHODS: We studied a total of 150 postmenopausal women (age 54 ± 7 years, mean ± 1 SD). Based on a cardiometabolic risk score, nonobese (body mass index [BMI] ≤ 27) and obese women (BMI > 27) were classified into "metabolically healthy" and "Требует внимания" phenotypes. Total and regional body composition was assessed with dual-energy X-ray absorptiometry (DXA).
RESULTS: In both obese and nonobese groups, the "Требует внимания" phenotypes were characterized by frequent bodyweight fluctuations, higher biochemical markers of insulin resistance, hepatic steatosis and inflammation, and higher anthropometric and DXA-derived indices of central adiposity, compared with "Работает" phenotypes. Indices of total adiposity, peripheral fat distribution and lean body mass were not significantly different between "Работает" and "Требует внимания" phenotypes. Despite having increased fat mass, MHO women exhibited comparable cardiometabolic parameters with healthy nonobese, and better glucose and lipid levels than MONO. Two DXA-derived indices, trunk-to-legs and abdominal-to-gluteofemoral fat ratio were the major independent determinants of the "Требует внимания" phenotypes in our cohort.
CONCLUSIONS: The "metabolically obese phenotype" is associated with bodyweight variability, multiple cardiometabolic abnormalities and an excess of central relative to peripheral fat in postmenopausal women. DXA-derived centrality ratios can discriminate effectively between metabolic subtypes of obesity in menopause.
Предметные рубрики MeSH
Abdominal FatAbsorptiometry, PhotonAdipose TissueBiomarkersBlood GlucoseBody Fat DistributionBody Fluid CompartmentsBody Mass IndexBody WeightCardiovascular DiseasesCross-Sectional StudiesFatty LiverFemaleHumansInflammationInsulin ResistanceLipidsMetabolic DiseasesMiddle AgedObesityObesity, AbdominalPhenotypePostmenopauseReference Values