Separate contribution of diabetes, total fat mass, and fat topography to glucose production, gluconeogenesis, and glycogenolysis (Articolo in rivista)

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Label
  • Separate contribution of diabetes, total fat mass, and fat topography to glucose production, gluconeogenesis, and glycogenolysis (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1210/jc.2003-031941 (literal)
Alternative label
  • Gastaldelli A, Miyazaki Y, Pettiti M, Buzzigoli E, Mahankali S, Ferrannini E, DeFronzo R.A (2004)
    Separate contribution of diabetes, total fat mass, and fat topography to glucose production, gluconeogenesis, and glycogenolysis
    in The Journal of clinical endocrinology and metabolism; Endocrine Society, Chevy Chase (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gastaldelli A, Miyazaki Y, Pettiti M, Buzzigoli E, Mahankali S, Ferrannini E, DeFronzo R.A (literal)
Pagina inizio
  • 3914 (literal)
Pagina fine
  • 3921 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.ncbi.nlm.nih.gov/pubmed/15292327 (literal)
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  • 89 (literal)
Rivista
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  • 8 (literal)
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  • 8 (literal)
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  • PubMe (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ Texas, Hlth Sci Ctr, Diabet Div, San Antonio, TX 78229 USA 2. Univ Pisa, Sch Med, CNR,Inst Clin Physiol, Metab Unit, I-56100 Pisa, Italy 3. Univ Pisa, Sch Med, Dept Internal Med, I-56100 Pisa, Italy (literal)
Titolo
  • Separate contribution of diabetes, total fat mass, and fat topography to glucose production, gluconeogenesis, and glycogenolysis (literal)
Abstract
  • The contribution of increased gluconeogenesis (GNG) to the excessive rate of endogenous glucose production (EGP) in type 2 diabetes (T2DM) is well established. However, the separate effects of obesity (total body fat), visceral adiposity, and T2DM have not been investigated. We measured GNG (by the (2)H(2)O technique) and EGP (with 3-(3)H-glucose) after an overnight fast in 44 type 2 diabetic and 29 gender/ethnic-matched controls. Subjects were classified as obese (body mass index 30 kg/m(2) or greater) or nonobese (body mass index < 30 kg/m(2)); diabetic subjects were further subdivided according to the severity of fasting hyperglycemia [fasting plasma glucose (FPG) < 9 mm or >or= 9 mm]. EGP was similar in nondiabetic controls and T2DM with FPG less than 9 mm but was increased in T2DM with FPG >or= 9 mm (P < 0.001). Within the diabetic groups, obesity had an independent effect to further increase basal EGP (P < 0.01). In both nonobese diabetic groups, both the percent GNG and gluconeogenic flux were increased, compared with nonobese nondiabetic controls. In both diabetic groups, obesity further increased both percent GNG and gluconeogenic flux. In obese and nonobese T2DM, the increase in gluconeogenic flux was not accompanied by a reciprocal decrease in glycogenolysis, indicating a loss of hepatic autoregulation. By multivariate analysis, gluconeogenic flux was positively correlated with percent body fat, visceral fat, and the fasting plasma free fatty acid and glucose concentrations (all P
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