Context: In subjects with normal glucose tolerance (NGT) 1-hour postload plasma glucose (1-h oral glucose tolerance test [OGTT]) of > 155 mg/dL predicts type 2 diabetes (T2DM) and is associated with subclinical atherosclerosis. Objective: The purpose of this study was to evaluate β-cell function, insulin resistance, and cardiovascular risk profile in subjects with NGT with a 1-h OGTT glucose of > 155 mg/dL. Patients and Methods: The GENFIEV (Genetics, PHYsiopathology, and Evolution of Type 2 diabetes) study is a multicenter study recruiting individuals at high risk of T2DM. A total of 926 subjects underwent a 75-g OGTT for assessment of plasma glucose and C-peptide for mathematical modeling of β-cell function (derivative and proportional control). Fasting insulin, lipid profile, and clinical parameters were determined as well. Results: A 1-hour OGTT glucose of > 155 mg/dL was found in 39% of subjects with NGT, 76% with impaired fasting glucose (IFG), 90% with impaired glucose tolerance (IGT), and 99% and 98% with IFG + IGT or newly diagnosed T2DM, respectively. Among subjects with NGT (n = 474), those with 1-hour OGTT glucose of > 155 mg/dL were more insulin-resistant and had worse β-cell function than those with 1-hour OGTT glucose of ≤ 155 mg/dL. Moreover, glycosylated hemoglobin, blood pressure, low-density lipoprotein cholesterol, and triglycerides were higher in subjects with NGT with 1-hour OGTT glucose of > 155 mg/dL, whereas high-density lipoprotein cholesterol was lower compared with that in subjects with NGT with 1-hour OGTT glucose of ≤ 155 mg/dL. Compared with subjects with IGT, those with NGT with 1-hour OGTT glucose of > 155 mg/dL had comparable cardiovascular risk profile and insulin resistance but slightly better β-cell function. Conclusions: Among subjects with NGT, those with 1-hour OGTT glucose of > 155 mg/dL showed lower insulin sensitivity, impaired β-cell function, and worse cardiovascular risk profile and therefore are at greater risk of developing T2DM and cardiovascular disease. Copyright © 2013 by The Endocrine Society.

Elevated 1-hour postload plasma glucose levels identify subjects with normal glucose tolerance but impaired β-cell function, insulin resistance, and worse cardiovascular risk profile: the GENFIEV study / C., Bianchi; R., Miccoli; M., Trombetta; F., Giorgino; S., Frontoni; E., Faloia; G., Marchesini; M. A., Dolci; F., Cavalot; Cavallo, Maria Gisella; Leonetti, Frida; R. C., Bonadonna; S., Genfiev Investigators Del Prato. - In: THE JOURNAL OF CLINICAL ENDOCRINOLOGY AND METABOLISM. - ISSN 0021-972X. - STAMPA. - 98:5(2013), pp. 2100-2105. [10.1210/jc.2012-3971]

Elevated 1-hour postload plasma glucose levels identify subjects with normal glucose tolerance but impaired β-cell function, insulin resistance, and worse cardiovascular risk profile: the GENFIEV study.

CAVALLO, Maria Gisella;LEONETTI, Frida;
2013

Abstract

Context: In subjects with normal glucose tolerance (NGT) 1-hour postload plasma glucose (1-h oral glucose tolerance test [OGTT]) of > 155 mg/dL predicts type 2 diabetes (T2DM) and is associated with subclinical atherosclerosis. Objective: The purpose of this study was to evaluate β-cell function, insulin resistance, and cardiovascular risk profile in subjects with NGT with a 1-h OGTT glucose of > 155 mg/dL. Patients and Methods: The GENFIEV (Genetics, PHYsiopathology, and Evolution of Type 2 diabetes) study is a multicenter study recruiting individuals at high risk of T2DM. A total of 926 subjects underwent a 75-g OGTT for assessment of plasma glucose and C-peptide for mathematical modeling of β-cell function (derivative and proportional control). Fasting insulin, lipid profile, and clinical parameters were determined as well. Results: A 1-hour OGTT glucose of > 155 mg/dL was found in 39% of subjects with NGT, 76% with impaired fasting glucose (IFG), 90% with impaired glucose tolerance (IGT), and 99% and 98% with IFG + IGT or newly diagnosed T2DM, respectively. Among subjects with NGT (n = 474), those with 1-hour OGTT glucose of > 155 mg/dL were more insulin-resistant and had worse β-cell function than those with 1-hour OGTT glucose of ≤ 155 mg/dL. Moreover, glycosylated hemoglobin, blood pressure, low-density lipoprotein cholesterol, and triglycerides were higher in subjects with NGT with 1-hour OGTT glucose of > 155 mg/dL, whereas high-density lipoprotein cholesterol was lower compared with that in subjects with NGT with 1-hour OGTT glucose of ≤ 155 mg/dL. Compared with subjects with IGT, those with NGT with 1-hour OGTT glucose of > 155 mg/dL had comparable cardiovascular risk profile and insulin resistance but slightly better β-cell function. Conclusions: Among subjects with NGT, those with 1-hour OGTT glucose of > 155 mg/dL showed lower insulin sensitivity, impaired β-cell function, and worse cardiovascular risk profile and therefore are at greater risk of developing T2DM and cardiovascular disease. Copyright © 2013 by The Endocrine Society.
2013
type-2 diabetes mellitus; sensitivity; disfunction
01 Pubblicazione su rivista::01a Articolo in rivista
Elevated 1-hour postload plasma glucose levels identify subjects with normal glucose tolerance but impaired β-cell function, insulin resistance, and worse cardiovascular risk profile: the GENFIEV study / C., Bianchi; R., Miccoli; M., Trombetta; F., Giorgino; S., Frontoni; E., Faloia; G., Marchesini; M. A., Dolci; F., Cavalot; Cavallo, Maria Gisella; Leonetti, Frida; R. C., Bonadonna; S., Genfiev Investigators Del Prato. - In: THE JOURNAL OF CLINICAL ENDOCRINOLOGY AND METABOLISM. - ISSN 0021-972X. - STAMPA. - 98:5(2013), pp. 2100-2105. [10.1210/jc.2012-3971]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/530194
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