scholarly journals Effects of miglitol taken just before or after breakfast on plasma glucose, serum insulin, glucagon and incretin levels after lunch in men with normal glucose tolerance, impaired fasting glucose or impaired glucose tolerance

2011 ◽  
Vol 2 (6) ◽  
pp. 435-440 ◽  
Author(s):  
Kiyomi Masuda ◽  
Kazutaka Aoki ◽  
Yasuo Terauchi
Keyword(s):  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Plasma Glucose ◽  
Fasting Glucose ◽  
Serum Insulin ◽  
Normal Glucose Tolerance ◽  
Normal Glucose

Plasma glucose concentration 60 min post oral glucose load and risk of type 2 diabetes and cardiovascular disease: Pathophysiological implications

2019 ◽  
Vol 16 (4) ◽  
pp. 337-343
Author(s):  
Fahim Abbasi ◽  
Paul JW Tern ◽  
Gerald M Reaven
Keyword(s):  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Plasma Glucose ◽  
Glucose Concentration ◽  
Fasting Glucose ◽  
Normal Glucose Tolerance ◽  
Plasma Glucose Concentration ◽  
Oral Glucose ◽  
Normal Glucose

Aim: The aim of this study was to gain insight into the pathophysiological significance of elevated plasma glucose concentrations (mmol/L) 60 min post oral glucose load in apparently healthy individuals. Methods: Comparison of resistance to insulin action and associated cardio-metabolic risk factors in 490 apparently healthy persons, subdivided into those with a plasma glucose concentration 60 min following a 75-g oral glucose challenge of <8.6 versus ⩾8.6. Results: Insulin resistance was significantly greater in persons with normal glucose tolerance whose 60-min glucose concentration was ⩾8.6, associated with higher blood pressure, plasma concentrations of glucose, insulin, triglyceride and lower high-density lipoprotein cholesterol concentrations. Similar differences were seen in persons with impaired fasting glucose, but not in those with impaired glucose tolerance or both impaired fasting glucose and impaired glucose tolerance. The group whose 60-min glucose was <8.6 ( n = 318) contained primarily persons with normal glucose tolerance (88%), whereas the majority of those whose 60-min value was ⩾8.6 ( n = 172) had prediabetes (59%) and in particular combined impaired fasting glucose and impaired glucose tolerance. Conclusion: Plasma glucose concentration of ⩾8.6 mmol/L 60 min post oral glucose identifies higher proportions of combined impaired fasting glucose and impaired glucose tolerance individuals as well as normal glucose tolerance and impaired fasting glucose individuals with a more adverse cardio-metabolic profile, contributing to observed increased overall risk of type 2 diabetes and other metabolic diseases.

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 prevalence of cardiac autonomic neuropathy in prediabetes: a systematic review

Diabetologia ◽  
2020 ◽  
Author(s):  
Aikaterini Eleftheriadou ◽  
Scott Williams ◽  
Sarah Nevitt ◽  
Emily Brown ◽  
Rebecca Roylance ◽  
...  
Keyword(s):  
Systematic Review ◽  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose ◽  
Normal Glucose Tolerance ◽  
Risk Of Bias ◽  
Cardiac Autonomic Neuropathy ◽  
Prevalence Data ◽  
Normal Glucose

Abstract Aims/hypothesis Cardiac autonomic neuropathy (CAN) is independently associated with silent myocardial ischaemia, major cardiovascular events, myocardial dysfunction and cardiovascular mortality. Several studies have highlighted the increased prevalence of CAN in prediabetes (impaired glucose tolerance and/or impaired fasting glucose). Considering the exponential rise of prediabetes, we aimed to determine the prevalence of CAN through a systematic literature review. Methods This systematic review was registered with PROSPERO (CRD42019125447). An electronic literature search was performed using MEDLINE, EMBASE, PubMed, Web of Science, Scopus and Cochrane databases. Published full text, English language articles that provide CAN prevalence data of studies in individuals with prediabetes and aged over 18 years were included. Prevalence data for normal glucose tolerance and diabetes were also extracted from the selected articles, if present. All articles were screened by two independent reviewers using a priori criteria. Methodological quality and risk of bias were evaluated using a critical appraisal tool. Results Database searches found 4500 articles; subsequently, 199 full text articles were screened, 11 of which fulfilled the inclusion criteria (4431 total participants, 1730 people with prediabetes, 1999 people with normal glucose tolerance [NGT] and 702 people with predominantly type 2 diabetes). Six of the selected studies reported definite CAN prevalence data (9–39%). Only a single large population-based study by Ziegler et al (KORA S4 study, 1332 participants) determined definite CAN based on two or more positive autonomic function tests (AFTs), with a mean prevalence of 9% in all prediabetes groups (isolated impaired glucose tolerance 5.9%; isolated impaired fasting glucose 8.1%; impaired fasting glucose plus impaired glucose tolerance 11.4%), which was higher than NGT (4.5%). This study is most likely to provide a reliable population-specific estimate of CAN in prediabetes. There was a higher than expected prevalence of CAN in prediabetes (9–38%) when compared with normal glucose tolerance (0–18%) within the same studies (n = 8). There was a wide prevalence of possible CAN based on one positive AFT (n = 5). There was heterogeneity between the studies with variations in the definition of CAN, methodology and characteristics of the populations, which likely contributed to the diversity of prevalence estimates. The overall risk of bias was low. Conclusions/interpretation There is a higher than expected prevalence of CAN in prediabetes. Early detection of CAN in prediabetes through population screening needs careful consideration in view of the excess morbidity and mortality risk associated with this condition.

scholarly journals Effect of Short-Term Increase in Meal Frequency on Glucose Metabolism in Individuals with Normal Glucose Tolerance or Impaired Fasting Glucose: A Randomized Crossover Clinical Trial

Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2126
Author(s):  
Masanobu Hibi ◽  
Sayaka Hari ◽  
Tohru Yamaguchi ◽  
Yuki Mitsui ◽  
Sumio Kondo ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Glucose Metabolism ◽  
Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose ◽  
Normal Glucose Tolerance ◽  
Oral Glucose ◽  
Maximum Plasma ◽  
Meal Frequency ◽  
Normal Glucose

Effects of meal frequency on blood glucose levels and glucose metabolism were evaluated over 3 days in adult males with normal glucose tolerance (NGT, n = 9) or impaired fasting glucose (IFG, n = 9) in a randomized, crossover comparison study. Subjects were provided with an isocaloric diet 3 times daily (3M) or 9 times daily (9M). Blood glucose was monitored on Day 3 using a continuous glucose monitoring system, and subjects underwent a 75-g oral glucose tolerance test (OGTT) on Day 4. Daytime maximum blood glucose, glucose range, duration of glucose ≥180 mg/dL, and nighttime maximum glucose were significantly lower in the NGT/9M condition than in the NGT/3M condition. Similar findings were observed in the IFG subjects, with a lower daytime and nighttime maximum glucose and glucose range, and a significantly higher daytime minimum glucose in the 9M condition than in the 3M condition. The OGTT results did not differ significantly between NGT/3M and NGT/9M conditions. In contrast, the incremental area under the curve tended to be lower and the maximum plasma glucose concentration was significantly lower in the IFG/9M condition than in the IFG/3M condition. In IFG subjects, the 9M condition significantly improved glucose metabolism compared with the 3M condition. Higher meal frequency may increase glucagon-like peptide 1 secretion and improve insulin secretion.

scholarly journals Insulin Secretory Defect and Insulin Resistance in Isolated Impaired Fasting Glucose and Isolated Impaired Glucose Tolerance

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Sae Aoyama-Sasabe ◽  
Mitsuo Fukushima ◽  
Xin Xin ◽  
Ataru Taniguchi ◽  
Yoshikatsu Nakai ◽  
...  
Keyword(s):  
Insulin Sensitivity ◽  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Plasma Glucose ◽  
Clinical Characteristics ◽  
Fasting Glucose ◽  
Insulinogenic Index ◽  
Initial Examination ◽  
The Relationship

Objective.To investigate the characteristics of isolated impaired glucose tolerance (IGT) and isolated impaired fasting glucose (IFG), we analyzed the factors responsible for elevation of 2-hour postchallenge plasma glucose (2 h PG) and fasting plasma glucose (FPG) levels.Methods.We investigated the relationship between 2 h PG and FPG levels who underwent 75 g OGTT in 5620 Japanese subjects at initial examination for medical check-up. We compared clinical characteristics between isolated IGT and isolated IFG and analyzed the relationships of 2 h PG and FPG with clinical characteristics, the indices of insulin secretory capacity, and insulin sensitivity.Results.In a comparison between isolated IGT and isolated IFG, insulinogenic index was lower in isolated IGT than that of isolated IFG (0.43 ± 0.34 versus 0.50 ± 0.47, resp.;p<0.01). ISI composite was lower in isolated IFG than that of isolated IGT (6.87 ± 3.38 versus 7.98 ± 4.03, resp.;p<0.0001). In isolated IGT group, insulinogenic index showed a significant correlation with 2 h PG (r=-0.245,p<0.0001) and had the strongest correlation with 2 h PG (β=-0.290). In isolated IFG group, ISI composite showed a significant correlation with FPG (r=-0.162,p<0.0001) and had the strongest correlation with FPG (β=-0.214).Conclusions.We have elucidated that decreased early-phase insulin secretion is the most important factor responsible for elevation of 2 h PG levels in isolated IGT subjects, and decreased insulin sensitivity is the most important factor responsible for elevation of FPG levels in isolated IFG subjects.

scholarly journals The Diagnosis of Prediabetes in Adolescents/Dijagnoza Predijabetesa Kod Adolescenata

2014 ◽  
Vol 34 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Vera Zdravković ◽  
Silvija Sajić ◽  
Jadranka Mitrović ◽  
Igor Stefanović ◽  
Polina Pavićević ◽  
...  
Keyword(s):  
Glucose Tolerance ◽  
Impaired Glucose Tolerance ◽  
Impaired Fasting Glucose ◽  
Fasting Glucose ◽  
Normal Glucose Tolerance ◽  
Normal Weight ◽  
Insulinogenic Index ◽  
Obese Patients ◽  
Obese Adolescents ◽  
Glucose Levels

Summary Background: Prediabetes is characterized by isolated impaired fasting glucose (IFG), isolated impaired glucose tolerance (IGT), and combined IFG/IGT. This study aimed to establish the prevalence of prediabetes and examine possible contributory factors in a cohort of obese adolescents. Methods: In this prospective study, we recruited 85 obese patients from the Obesity Clinic at the University Children’s Hospital and 17 normal weight controls. All patients were of Caucasian origin, 60 males/42 females, aged 7.4-18.3 years, with at least Tanner 2 stage of puberty. Results: Depending on criteria we used, insulin resistance was confirmed in 62-100% of obese patients, predominantly in the group with BMI SDS > 3. oGTT revealed isolated impaired fasting glucose (IFG) in 13.9%, impaired glucose tolerance (IGT) in 20.8% and combined IFG and IGT only in 2.8% of the obese patients. Patients in the prediabetes group were older (14±2.4 vs 12.8±2.5 p=0.04) and had higher glucose levels (p<0.001) during the whole oGTT compared to normal glucose tolerance (NGT) group. There was no difference between groups in respect to family history, BMI, lipids and fasting insulin. Insulinogenic index, WBISI and HOMA%B were significantly lower in the prediabetes group compared to the NGT group (p=0.07, 0.01 and 0.04 respectively). HbA1c level was measured in 58% of patients and was significantly higher in the prediabetes group (5.4±0.3 vs 5.7±0.4, p=0.002). Conclusion: Prediabetes occurrence was fairly high in our obese adolescents. Further studies should establish what would be the most appropriate screening test to diagnose these patients at risk for type 2 diabetes and initiate treatment without delay.

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