scholarly journals Contributions of  -Cell Dysfunction and Insulin Resistance to the Pathogenesis of Impaired Glucose Tolerance and Impaired Fasting Glucose

Diabetes Care ◽  
2006 ◽  
Vol 29 (5) ◽  
pp. 1130-1139 ◽  
Author(s):  
M. A. Abdul-Ghani ◽  
D. Tripathy ◽  
R. A. DeFronzo
Keyword(s):  
Insulin Resistance ◽  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose ◽  
Cell Dysfunction

scholarly journals Impaired fasting glucose with or without impaired glucose tolerance: progressive or parallel states of prediabetes?

2008 ◽  
Vol 295 (2) ◽  
pp. E428-E435 ◽  
Author(s):  
Leigh Perreault ◽  
Bryan C. Bergman ◽  
Mary C. Playdon ◽  
Chiara Dalla Man ◽  
Claudio Cobelli ◽  
...  
Keyword(s):  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Insulin Action ◽  
Low Dose ◽  
Fasting Glucose ◽  
Normal Glucose Tolerance ◽  
Β Cell ◽  
Cell Dysfunction ◽  
Normal Glucose

Our objective was to determine whether defects underlying impaired fasting glucose (IFG) are maintained and additive when combined with impaired glucose tolerance (IGT) (representing a progressive form of prediabetes) or are distinct in IFG/IGT (reflecting a parallel form of prediabetes). Volunteers with IFG ( n = 10), IFG/IGT ( n = 14), or normal glucose tolerance (NGT; n = 15) were matched for demographics and anthropometry. Insulin secretion was assessed using the glucose step-up protocol and insulin action through the use of a two-stage hyperinsulinemic euglycemic clamp with infusion of [6,6-2H2]glucose. Modeling of insulin secretory parameters revealed similar basal (Φb) but diminished dynamic (Φd) components in both IFG and IFG/IGT ( P = 0.05 vs. NGT for both). Basal glucose rate of appearance (Ra) was higher in IFG compared with NGT ( P < 0.01) and also, surprisingly, with IFG/IGT ( P < 0.04). Moreover, glucose Ra suppressed more during the low-dose insulin clamp in IFG ( P < 0.01 vs. NGT, P = 0.08 vs. IFG/IGT). Insulin-stimulated glucose uptake [glucose rate of disappearance (Rd)] was similar in IFG, IFG/IGT, and NGT throughout the clamp. We conclude that nuances of β-cell dysfunction observed in IFG were also noted in IFG/IGT. A trend for additional insulin secretory defects was observed in IFG/IGT, possibly suggesting progression in β-cell failure in this group. In contrast, basal glucose Ra and its suppressability with insulin were higher in IFG, but not IFG/IGT, compared with NGT. Together, these data indicate that IFG/IGT may be a distinct prediabetic syndrome rather than progression from IFG.

scholarly journals The positive association between serum uric acid, impaired fasting glucose, impaired glucose tolerance, and diabetes mellitus in the ELSA-Brasil study

2021 ◽  
Vol 37 (9) ◽  
Author(s):  
Aline Isabel Rodrigues Galvão ◽  
Alline Maria R. Beleigoli ◽  
Pedro Guatimosim Vidigal ◽  
Bruce Bartholow Duncan ◽  
Maria Inês Schmidt ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Insulin Resistance ◽  
Uric Acid ◽  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Serum Uric Acid ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose ◽  
Newly Diagnosed ◽  
Glycemic Status

Abstract: There is a conflict in the literature regarding the association between serum uric acid (SUA) levels and glycemic status. Therefore, we evaluated the association between SUA level and glycemic status - impaired fasting glucose (IFG), impaired glucose tolerance (IGT), and diabetes mellitus - and insulin resistance, in a large Brazilian study. This is a cross-sectional, observational study with 13,207 participants aged 35-74 years, at baseline (2008-2010) of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). A multinomial regression analysis was performed to test the association between SUA and glycemic status (IFG, IGT, and newly diagnosed type 2 diabetes at the cohort baseline) after adjustments by age, sex, skin color, body mass index, physical activity, smoking, alcohol consumption, comorbidities, and medicines use. Logistic regression model was used to evaluate the association between SUA and insulin resistance by HOMA-IR. Stratified analyses by sex were performed. The mean age (standard deviation) was 51.4 (8.9) years, 55.2% of participants were women. There were 1,439 newly diagnosed diabetes. After all adjustments, higher SUA was associated with IFG, IGT, and diabetes, with odds ratio (OR) = 1.15 (95%CI: 1.06; 1.25), 1.23 (95%CI: 1.14; 1.33), and 1.37 (95%CI: 1.24; 1.51), respectively. There was association between SUA levels and insulin resistance with OR = 1.24 (95%CI: 1.13; 1.36). In analysis stratified by sex, higher SUA persisted independently associated with impaired glycemic status. Our results suggest that a higher SUA levels were significantly associated with glycemic status in a large Latin American population, mainly among women.

scholarly journals Differences in Insulin Resistance in Nondiabetic Subjects With Isolated Impaired Glucose Tolerance or Isolated Impaired Fasting Glucose

Diabetes ◽  
2004 ◽  
Vol 53 (6) ◽  
pp. 1549-1555 ◽  
Author(s):  
A. Festa ◽  
R. D'Agostino ◽  
A. J.G. Hanley ◽  
A. J. Karter ◽  
M. F. Saad ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose
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