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Kahn SE, Woods SC, Halter JB, Taborsky GJ, Schwartz MW. Daniel Porte Jr., 13 August 1931-13 May 2023. Diabetes 2024; 73:5-10. [PMID: 38118001 PMCID: PMC10784651 DOI: 10.2337/db23-0787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Affiliation(s)
- Steven E. Kahn
- VA Puget Sound Health Care System and University of Washington, Seattle, WA
| | | | - Jeffrey B. Halter
- University of Michigan, Ann Arbor, MI
- National University of Singapore, Singapore
| | - Gerald J. Taborsky
- VA Puget Sound Health Care System and University of Washington, Seattle, WA
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Ramanadham S, Turk J, Bhatnagar S. Noncanonical Regulation of cAMP-Dependent Insulin Secretion and Its Implications in Type 2 Diabetes. Compr Physiol 2023; 13:5023-5049. [PMID: 37358504 PMCID: PMC10809800 DOI: 10.1002/cphy.c220031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Impaired glucose tolerance (IGT) and β-cell dysfunction in insulin resistance associated with obesity lead to type 2 diabetes (T2D). Glucose-stimulated insulin secretion (GSIS) from β-cells occurs via a canonical pathway that involves glucose metabolism, ATP generation, inactivation of K ATP channels, plasma membrane depolarization, and increases in cytosolic concentrations of [Ca 2+ ] c . However, optimal insulin secretion requires amplification of GSIS by increases in cyclic adenosine monophosphate (cAMP) signaling. The cAMP effectors protein kinase A (PKA) and exchange factor activated by cyclic-AMP (Epac) regulate membrane depolarization, gene expression, and trafficking and fusion of insulin granules to the plasma membrane for amplifying GSIS. The widely recognized lipid signaling generated within β-cells by the β-isoform of Ca 2+ -independent phospholipase A 2 enzyme (iPLA 2 β) participates in cAMP-stimulated insulin secretion (cSIS). Recent work has identified the role of a G-protein coupled receptor (GPCR) activated signaling by the complement 1q like-3 (C1ql3) secreted protein in inhibiting cSIS. In the IGT state, cSIS is attenuated, and the β-cell function is reduced. Interestingly, while β-cell-specific deletion of iPLA 2 β reduces cAMP-mediated amplification of GSIS, the loss of iPLA 2 β in macrophages (MØ) confers protection against the development of glucose intolerance associated with diet-induced obesity (DIO). In this article, we discuss canonical (glucose and cAMP) and novel noncanonical (iPLA 2 β and C1ql3) pathways and how they may affect β-cell (dys)function in the context of impaired glucose intolerance associated with obesity and T2D. In conclusion, we provide a perspective that in IGT states, targeting noncanonical pathways along with canonical pathways could be a more comprehensive approach for restoring β-cell function in T2D. © 2023 American Physiological Society. Compr Physiol 13:5023-5049, 2023.
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Affiliation(s)
- Sasanka Ramanadham
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Alabama, USA
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Alabama, USA
| | - John Turk
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Sushant Bhatnagar
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Alabama, USA
- Department of Medicine, University of Alabama at Birmingham, Alabama, USA
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3
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Wander PL, Christophi CA, Araneta MRG, Boyko EJ, Enquobahrie DA, Dabelea D, Goldberg RB, Kahn SE, Kim C, Pi-Sunyer X, Knowler WC. Adiposity, related biomarkers, and type 2 diabetes after gestational diabetes: The Diabetes Prevention Program. Obesity (Silver Spring) 2022; 30:221-228. [PMID: 34796678 PMCID: PMC8692336 DOI: 10.1002/oby.23291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/23/2021] [Accepted: 08/15/2021] [Indexed: 01/03/2023]
Abstract
OBJECTIVE This study investigated associations of adiposity and adiposity-related biomarkers with incident type 2 diabetes (T2D) among parous women. METHODS Among women in the Diabetes Prevention Program (DPP) who reported a previous live birth, circulating biomarkers (leptin, adiponectin, sex hormone-binding globulin, and alanine aminotransferase; n = 1,711) were measured at enrollment (average: 12 years post partum). Visceral (VAT) and subcutaneous adipose tissue areas at the L2-L3 region and the L3-L4 region were quantified by computed tomography (n = 477). Overall and stratified (by history of gestational diabetes mellitus [GDM]) adjusted Cox proportional hazards models were fit. RESULTS Alanine aminotransferase, L2-L3 VAT, and L3-L4 VAT were positively associated (hazard ratio [HR] for 1-SD increases: 1.073, p = 0.024; 1.251, p = 0.009; 1.272, p = 0.004, respectively), and adiponectin concentration was inversely associated with T2D (HR 0.762, p < 0.001). Whereas leptin concentration was not associated with T2D overall, in GDM-stratified models, a 1-SD higher leptin was positively associated with risk of T2D in women without GDM (HR: 1.126, p = 0.016) and inversely in women with a history of GDM (HR: 0.776, p = 0.013, interaction p = 0.002). CONCLUSIONS Among parous women, alanine aminotransferase and VAT are positively associated with incident T2D, whereas adiponectin is inversely associated. Leptin is associated with higher risk of T2D in women with a history of GDM but a lower risk in women without a history of GDM.
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Affiliation(s)
- Pandora L Wander
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Costas A Christophi
- Biostatistics Center, George Washington University, Rockville, Maryland, USA
| | - Maria Rosario G Araneta
- Department of Family Medicine and Public Health, University of California San Diego, La Jolla, California, USA
| | - Edward J Boyko
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | | | - Dana Dabelea
- Department of Preventive Medicine and Biometrics, Colorado School of Public Health, Aurora, Colorado, USA
| | | | - Steven E Kahn
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Catherine Kim
- Departments of Medicine and Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan, USA
| | - Xavier Pi-Sunyer
- Division of Endocrinology, Columbia University Medical Center, New York, New York, USA
| | - William C Knowler
- National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, Arizona, USA
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Kahn SE, Chen YC, Esser N, Taylor AJ, van Raalte DH, Zraika S, Verchere CB. The β Cell in Diabetes: Integrating Biomarkers With Functional Measures. Endocr Rev 2021; 42:528-583. [PMID: 34180979 PMCID: PMC9115372 DOI: 10.1210/endrev/bnab021] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 02/08/2023]
Abstract
The pathogenesis of hyperglycemia observed in most forms of diabetes is intimately tied to the islet β cell. Impairments in propeptide processing and secretory function, along with the loss of these vital cells, is demonstrable not only in those in whom the diagnosis is established but typically also in individuals who are at increased risk of developing the disease. Biomarkers are used to inform on the state of a biological process, pathological condition, or response to an intervention and are increasingly being used for predicting, diagnosing, and prognosticating disease. They are also proving to be of use in the different forms of diabetes in both research and clinical settings. This review focuses on the β cell, addressing the potential utility of genetic markers, circulating molecules, immune cell phenotyping, and imaging approaches as biomarkers of cellular function and loss of this critical cell. Further, we consider how these biomarkers complement the more long-established, dynamic, and often complex measurements of β-cell secretory function that themselves could be considered biomarkers.
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Affiliation(s)
- Steven E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System and University of Washington, Seattle, 98108 WA, USA
| | - Yi-Chun Chen
- BC Children's Hospital Research Institute and Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V5Z 4H4, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada.,Department of Surgery, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada
| | - Nathalie Esser
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System and University of Washington, Seattle, 98108 WA, USA
| | - Austin J Taylor
- BC Children's Hospital Research Institute and Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V5Z 4H4, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada.,Department of Surgery, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada
| | - Daniël H van Raalte
- Department of Internal Medicine, Amsterdam University Medical Center (UMC), Vrije Universiteit (VU) University Medical Center, 1007 MB Amsterdam, The Netherlands.,Department of Experimental Vascular Medicine, Amsterdam University Medical Center (UMC), Academic Medical Center, 1007 MB Amsterdam, The Netherlands
| | - Sakeneh Zraika
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System and University of Washington, Seattle, 98108 WA, USA
| | - C Bruce Verchere
- BC Children's Hospital Research Institute and Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V5Z 4H4, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada.,Department of Surgery, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada
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5
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Esser N, Utzschneider KM, Kahn SE. Early beta cell dysfunction vs insulin hypersecretion as the primary event in the pathogenesis of dysglycaemia. Diabetologia 2020; 63:2007-2021. [PMID: 32894311 DOI: 10.1007/s00125-020-05245-x] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022]
Abstract
Obesity and insulin resistance are associated with the development of type 2 diabetes. It is well accepted that beta cell dysfunction is required for hyperglycaemia to occur. The prevailing view is that, in the presence of insulin resistance, beta cell dysfunction that occurs early in the course of the disease process is the critical abnormality. An alternative model has been proposed in which primary beta cell overstimulation results in insulin hypersecretion that then leads to the development of obesity and insulin resistance, and ultimately to beta cell exhaustion. In this review, data from preclinical and clinical studies, including intervention studies, are discussed in the context of these models. The preponderance of the data supports the view that an early beta cell functional defect is the more likely mechanism underlying the pathogenesis of hyperglycaemia in the majority of individuals who develop type 2 diabetes. Graphical abstract.
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Affiliation(s)
- Nathalie Esser
- Veterans Affairs Puget Sound Health Care System, 1660 South Columbian Way (151), Seattle, WA, 98108, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Kristina M Utzschneider
- Veterans Affairs Puget Sound Health Care System, 1660 South Columbian Way (151), Seattle, WA, 98108, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Steven E Kahn
- Veterans Affairs Puget Sound Health Care System, 1660 South Columbian Way (151), Seattle, WA, 98108, USA.
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA.
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Winhofer Y, Wolf P, Fellinger P, Tura A, Hillebrand P, Staufer K, Trauner M, Jaksch P, Muraközy G, Kautzky-Willer A, Pacini G, Krebs M, Luger A, Kazemi-Shirazi L. MARKEDLY DELAYED INSULIN SECRETION AND A HIGH RATE OF UNDETECTED OVERT DIABETES CHARACTERIZE GLUCOSE METABOLISM IN ADULT PATIENTS WITH CYSTIC FIBROSIS AFTER LUNG TRANSPLANTATION. Endocr Pract 2019; 25:254-262. [PMID: 30913015 DOI: 10.4158/ep-2018-0461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Cystic fibrosis-related diabetes (CFRD) is associated with adverse clinical outcomes and should be screened for by an annual oral glucose tolerance test (OGTT). Since pathophysiologic studies have mainly been performed in a pediatric/adolescent, nontransplanted collective, we aimed to assess parameters of insulin secretion and sensitivity in adult cystic fibrosis (CF) patients after lung transplantation (LT). METHODS Twelve adult CF patients after LT without known diabetes (33.3 ± 11.5 years; body mass index [BMI] 21.5 ± 3.3 kg/m2) and 8 control subjects matched by age (36.0 ± 6.6 years; P>.05), BMI (22.3 ± 1.5 kg/m2; P>.05), and gender (CON group) underwent a 3-hour OGTT with glucose, insulin, and C-peptide measurements. Parameters of insulin secretion and sensitivity as well as lipid profiles were assessed. RESULTS In the CF group, 4 patients were diagnosed with overt diabetes (CFRD) compared to CF patients without diabetes (CF-noDM), of whom 6 had indeterminate glycemia with 1-h glucose values >200 mg/dL. The insulin peak after glucose load occurred after 30 minutes in CON, after 90 minutes in CF-noDM, and was missing in CFRD. Insulin sensitivity was comparable between the groups. Beta-cell glucose sensitivity was markedly reduced in CFRD (10.7 ± 5.8 pmol/min*m2*mM), higher in CF-noDM (39.9 ± 23.4 pmol/min*m2*mM), but still significantly lower compared to CON (108.3 ± 53.9 pmol/min*m2*mM; P = .0008). CFRD patients exhibited increased triglyceride levels and decreased high-density lipoprotein levels. CONCLUSION Adult CF patients after LT have profound disturbances in glucose metabolism, with a high rate of undetected diabetes and markedly delayed insulin secretion. Curbed beta-cell glucose sensitivity rather than insulin resistance explains postprandial hyperglycemia and is accompanied by abnormalities in lipid metabolism. ABBREVIATIONS AUC = area under the curve; BMI = body mass index; CF = cystic fibrosis; CFRD = cystic fibrosis-related diabetes; CFTR = cystic fibrosis transmembrane-conductance regulator; CF-TX = cystic fibrosis patients who underwent lung transplantation; CGM = continuous glucose monitoring; HbA1c = glycated hemoglobin; HDL = high-density lipoprotein; INDET = indeterminate glycemia; LDL = low-density lipoprotein; LT = lung transplantation; OGIS = oral glucose sensitivity index; OGTT = oral glucose tolerance test; QUICKI = quantitative insulin sensitivity check index.
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7
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Lohse Z, Knorr S, Bytoft B, Clausen TD, Jensen RB, Oturai P, Beck-Nielsen H, Gravholt CH, Damm P, Højlund K, Jensen DM. Differential effects of age and sex on insulin sensitivity and body composition in adolescent offspring of women with type 1 diabetes: results from the EPICOM study. Diabetologia 2018; 61:210-219. [PMID: 28971223 DOI: 10.1007/s00125-017-4458-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/15/2017] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS The aim of this study was to investigate the influence of age and sex on insulin sensitivity and insulin secretion in the adolescent offspring of women with type 1 diabetes, compared with the background population. METHODS This was a prospective nationwide follow-up study (Epigenetic, Genetic and Environmental Effects on Growth, Cognitive Functions and Metabolism in Offspring of Women with Type 1 Diabetes [EPICOM]) in a Danish population. We examined 278 offspring of women with type 1 diabetes from the Danish Diabetes Association Register born during 1993-1999 (index offspring) and 303 control offspring, identified through the Danish Central Office of Civil Registration and matched to the index offspring with respect to date of birth, sex and postal code. The offspring had an overall mean age of 16.7 years (range 13.0-20.4 years). The main outcomes were age-related changes in fasting OGTT-derived indices for insulin sensitivity (BIGTT-SI0-30-120, Matsuda index, HOMA-IR) and insulin secretion (acute insulin response [BIGTT-AIR0-0-30-120], insulinogenic index, HOMA of insulin secretory function [HOMA-β], disposition index) and physical activity (International Physical Activity Questionnaire). In addition, we determined total body fat (TBF) percentage using dual-energy x-ray absorptiometry. RESULTS We observed significantly lower insulin sensitivity in index offspring compared with control offspring, increasing with age. The differences were attenuated after adjustment for TBF percentage, but were still significant at 17 and 18 years of age. We also observed decreased disposition index and insulin secretion-sensitivity index-2 in index offspring at the same age, but we found no significant differences in other indices of insulin secretion compared with control offspring. With age, TBF percentage became increasingly more divergent between index and control offspring, and was consistently higher among female but not male index offspring. CONCLUSIONS/INTERPRETATION Differences in insulin sensitivity between the offspring of women with type 1 diabetes and control offspring increased with age. This was only partially explained by higher adiposity in the index offspring. TRIAL REGISTRATION ClinicalTrials.gov NCT01559181.
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Affiliation(s)
- Zuzana Lohse
- Department of Endocrinology, Odense University Hospital, Kløvervænget 6, 4th floor, 5000, Odense C, Denmark
- The Department of Clinical Research, Faculty of Health and Medical Sciences, University of Southern Denmark, Odense, Denmark
| | - Sine Knorr
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Bytoft
- Center for Pregnant Women with Diabetes, Rigshospitalet, Copenhagen, Denmark
- Department of Obstetrics, Rigshospitalet, Copenhagen, Denmark
- The Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tine D Clausen
- Department of Gynecology and Obstetrics, Hilleroed Hospital, Hilleroed, Denmark
| | - Rikke B Jensen
- University Department of Growth and Reproduction, Rigshospitalet, Copenhagen, Denmark
| | - Peter Oturai
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, Copenhagen, Denmark
| | - Henning Beck-Nielsen
- Department of Endocrinology, Odense University Hospital, Kløvervænget 6, 4th floor, 5000, Odense C, Denmark
| | - Claus H Gravholt
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Damm
- Center for Pregnant Women with Diabetes, Rigshospitalet, Copenhagen, Denmark
- Department of Obstetrics, Rigshospitalet, Copenhagen, Denmark
- The Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kurt Højlund
- Department of Endocrinology, Odense University Hospital, Kløvervænget 6, 4th floor, 5000, Odense C, Denmark
- Section of Molecular Diabetes & Metabolism, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Dorte M Jensen
- Department of Endocrinology, Odense University Hospital, Kløvervænget 6, 4th floor, 5000, Odense C, Denmark.
- The Department of Clinical Research, Faculty of Health and Medical Sciences, University of Southern Denmark, Odense, Denmark.
- Department of Gynaecology and Obstetrics, Odense University Hospital, Odense, Denmark.
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8
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Ryan AS. Improvements in insulin sensitivity after aerobic exercise and weight loss in older women with a history of gestational diabetes and type 2 diabetes mellitus. Endocr Res 2016; 41:132-41. [PMID: 26925596 PMCID: PMC4961462 DOI: 10.3109/07435800.2015.1094087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To determine whether a hypocaloric diet alone (WL) or with exercise training (AEX + WL) is effective in improving body composition, fitness, glucose utilization and CVD risk factors in sedentary women with a history of gestational diabetes (GDM) and with type 2 diabetes (T2DM). MATERIALS AND METHODS Longitudinal clinical investigation of 25 overweight/obese (BMI: 32 ± 1 kg/m(2)) women (59 ± 1 yrs) with a GDM history (n = 20) or T2DM (n = 5). Women completed 6 months WL (n = 10) or AEX+WL (n = 15) with VO2max, body composition, and glucose tolerance testing. Insulin sensitivity was measured during the last 30 min of 2 h hyperinsulinemic-euglycemic clamps (40 mU·m(-2.)min(-1)) before and after interventions. RESULTS Body weight decreased ~7% after WL and AEX+WL (p < 0.001), with an 11-12% decrease in fat mass (p < 0.0001). Visceral fat and subcutaneous abdominal fat decreased 27 and 10% after WL (p < 0.01) and 14 and 11% after AEX + WL (p < 0.05). VO2max increased 16% after AEX + WL (p < 0.001) and did not change after WL. Glucose AUC decreased 14 and 13% after WL (p < 0.05) and AEX + WL (p < 0.01) with a 42% decrease in insulin AUC after AEX + WL (p < 0.01). Glucose utilization increased 25% (p = 0.05) with AEX + WL and 7% with WL. CONCLUSIONS A six-month aerobic exercise program combined with moderate weight loss reduces body weight, visceral and subcutaneous abdominal fat, and improves insulin sensitivity in older women who had previously been diagnosed with GDM and those with T2DM. These findings should encourage women with a history of GDM to engage in an active lifestyle and reduce caloric intake to lower the risk for the development of T2DM.
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Affiliation(s)
- Alice S Ryan
- a VA Maryland Health Care System, Research Service, Department of Medicine, Division of Gerontology and Geriatric Medicine , University of Maryland School of Medicine , Baltimore , MD , USA
- b Baltimore Geriatric Research, Education and Clinical Center (GRECC) , Baltimore , MD , USA
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9
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Khodabandehloo H, Gorgani-Firuzjaee S, Panahi G, Meshkani R. Molecular and cellular mechanisms linking inflammation to insulin resistance and β-cell dysfunction. Transl Res 2016; 167:228-56. [PMID: 26408801 DOI: 10.1016/j.trsl.2015.08.011] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/29/2015] [Accepted: 08/31/2015] [Indexed: 12/13/2022]
Abstract
Obesity is a major public health problem worldwide, and it is associated with an increased risk of developing type 2 diabetes. It is now commonly accepted that chronic inflammation associated with obesity induces insulin resistance and β-cell dysfunction in diabetic patients. Obesity-associated inflammation is characterized by increased abundance of macrophages and enhanced production of inflammatory cytokines in adipose tissue. Adipose tissue macrophages are suggested to be the major source of local and systemic inflammatory mediators such as tumor necrosis factor α, interleukin (IL)-1β, and IL-6. These cytokines induce insulin resistance in insulin target tissues by activating the suppressors of cytokine signaling proteins, several kinases such as c-Jun N-terminal kinase, IκB kinase β, and protein kinase C, inducible nitric oxide synthase, extracellular signal-regulated kinase, and protein tyrosine phosphatases such as protein tyrosine phosphatase 1B. These activated factors impair the insulin signaling at the insulin receptor and the insulin receptor substrates levels. The same process most likely occurs in the pancreas as it contains a pool of tissue-resident macrophages. High concentrations of glucose or palmitate via the chemokine production promote further immune cell migration and infiltration into the islets. These events ultimately induce inflammatory responses leading to the apoptosis of the pancreatic β cells. In this review, the cellular and molecular players that participate in the regulation of obesity-induced inflammation are discussed, with particular attention being placed on the roles of the molecular players linking inflammation to insulin resistance and β-cell dysfunction.
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Affiliation(s)
- Hadi Khodabandehloo
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Sattar Gorgani-Firuzjaee
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Ghodratollah Panahi
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Reza Meshkani
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
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Ryan AS, Serra MC. Skeletal Muscle CAP Expression Increases after Dietary Restriction and Aerobic Training in Women with a History of Gestational Diabetes. ACTA ACUST UNITED AC 2016; 5. [PMID: 28989819 DOI: 10.4172/2167-7182.1000354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The purpose is to determine the effects of 6 months caloric restriction and aerobic training (3x/wk) (CR+AEX) on c-CBL associated protein (CAP) gene expression in women with a history of GDM. CAP is involved in cell signaling and protein ubiquitination, and is linked to the development of insulin resistance. Obese (BMI=32 ± 1 kg/m2, % fat=46 ± 2, X ± SEM), sedentary (VO2 max=21.2 ± 1.2 ml/kg/min), women aged 52 ± 2 years participated in 6 months D+WL (n=10) with body composition, fitness (VO2 max), and glucose tolerance testing. Insulin sensitivity was assessed during the last 30 min of 2-hour hyperinsulinemic-euglycemic clamps (40 mU.m-2.min-1) pre and post interventions. Vastus lateralis skeletal muscle biopsies (n=7) were conducted and CAP, GLUT4 and glycogen synthase (GS) gene expression measured by RT-PCR. No change in FFM by DXA was observed, but body weight decreased 8% with losses of total body fat mass (P<0.05) and a 10% increase in VO2 max (P<0.01). Glucose and insulin areas under the curve by OGTT decreased (P<0.05). Glucose utilization during the clamp increased 27% (23.1 ± 3.8 vs. 29.4 ± 3.6 umol.kg.min-1, P<0.05). Vastus lateralis skeletal muscle CAP expression increased 21% (P<0.05) but GLUT4 did not. Results suggest that changes in CAP could be involved in the improvement in glucose metabolism with caloric restriction and aerobic training in women with a history of gestational diabetes.
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Affiliation(s)
- Alice S Ryan
- Department of Medicine, University of Maryland School of Medicine, USA
| | - Monica C Serra
- Department of Medicine, University of Maryland School of Medicine, USA
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Salzer L, Tenenbaum-Gavish K, Hod M. Metabolic disorder of pregnancy (understanding pathophysiology of diabetes and preeclampsia). Best Pract Res Clin Obstet Gynaecol 2015; 29:328-38. [DOI: 10.1016/j.bpobgyn.2014.09.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/04/2014] [Indexed: 01/22/2023]
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Kramer CK, Swaminathan B, Hanley AJ, Connelly PW, Sermer M, Zinman B, Retnakaran R. Each degree of glucose intolerance in pregnancy predicts distinct trajectories of β-cell function, insulin sensitivity, and glycemia in the first 3 years postpartum. Diabetes Care 2014; 37:3262-9. [PMID: 25231898 DOI: 10.2337/dc14-1529] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Glucose intolerance in pregnancy predicts an increased risk of future type 2 diabetes mellitus (T2DM) that is proportional to the severity of antepartum dysglycemia (i.e., highest in women with gestational diabetes mellitus [GDM], followed by those with milder dysglycemia). However, the pathophysiologic changes driving this risk are not known. Thus, we evaluated the longitudinal changes in β-cell function, insulin sensitivity, and glycemia in the first 3 years postpartum after gestational dysglycemia. RESEARCH DESIGN AND METHODS A total of 337 women underwent glucose challenge test (GCT) and oral glucose tolerance test (OGTT) in pregnancy, followed by repeat OGTT at 3 months, 1 year, and 3 years postpartum. The antepartum GCT/OGTT identified four gestational glucose tolerance groups: GDM (n = 105); gestational impaired glucose tolerance (GIGT; n = 60); abnormal GCT, followed by normal glucose tolerance (NGT) on the OGTT (abnormal GCT NGT; n = 96); and normal GCT with NGT (n = 76). RESULTS At each of 3 months, 1 year, and 3 years postpartum, the prevalence of glucose intolerance increased from normal GCT NGT to abnormal GCT NGT to GIGT to GDM (all P < 0.001), whereas β-cell function, assessed by the Insulin Secretion-Sensitivity Index-2 (ISSI-2), and insulin sensitivity (Matsuda index), progressively decreased across the groups (all P < 0.002). Each group predicted distinct trajectories of ISSI-2, Matsuda index, and fasting and 2-h glucose (all P < 0.001). Notably, GDM, GIGT, and abnormal GCT NGT predicted varying rates of declining β-cell function and insulin sensitivity, as well as rising glycemia, compared with normal GCT NGT. CONCLUSIONS Each degree of gestational glucose intolerance predicts distinct trajectories of β-cell function, insulin sensitivity, and glycemia in the first 3 years postpartum that drive their differential risk of future T2DM.
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Affiliation(s)
- Caroline K Kramer
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada
| | - Balakumar Swaminathan
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Anthony J Hanley
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Philip W Connelly
- Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Mathew Sermer
- Division of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario, Canada
| | - Bernard Zinman
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Ravi Retnakaran
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
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13
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Abstract
Glucose metabolism is normally regulated by a feedback loop including islet β cells and insulin-sensitive tissues, in which tissue sensitivity to insulin affects magnitude of β-cell response. If insulin resistance is present, β cells maintain normal glucose tolerance by increasing insulin output. Only when β cells cannot release sufficient insulin in the presence of insulin resistance do glucose concentrations rise. Although β-cell dysfunction has a clear genetic component, environmental changes play an essential part. Modern research approaches have helped to establish the important role that hexoses, aminoacids, and fatty acids have in insulin resistance and β-cell dysfunction, and the potential role of changes in the microbiome. Several new approaches for treatment have been developed, but more effective therapies to slow progressive loss of β-cell function are needed. Recent findings from clinical trials provide important information about methods to prevent and treat type 2 diabetes and some of the adverse effects of these interventions. However, additional long-term studies of drugs and bariatric surgery are needed to identify new ways to prevent and treat type 2 diabetes and thereby reduce the harmful effects of this disease.
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Affiliation(s)
- Steven E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System, University of Washington, Seattle, WA, USA.
| | - Mark E Cooper
- Diabetes Division, Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Stefano Del Prato
- Department of Clinical and Experimental Medicine, University of Pisa School of Medicine, Pisa, Italy
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14
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Isganaitis E, Woo M, Ma H, Chen M, Kong W, Lytras A, Sales V, DeCoste-Lopez J, Lee KJ, Leatherwood C, Lee D, Fitzpatrick C, Gall W, Watkins S, Patti ME. Developmental programming by maternal insulin resistance: hyperinsulinemia, glucose intolerance, and dysregulated lipid metabolism in male offspring of insulin-resistant mice. Diabetes 2014; 63:688-700. [PMID: 24186867 PMCID: PMC3900545 DOI: 10.2337/db13-0558] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Maternal obesity and gestational diabetes mellitus (GDM) are associated with obesity and diabetes risk in offspring. We tested whether maternal insulin resistance, which frequently coexists with GDM and obesity, could independently contribute to dysregulation of offspring metabolism. Female mice haploinsufficient for insulin receptor substrate-1 (IRS1-het) are hyperinsulinemic and insulin resistant during pregnancy, despite normal plasma glucose and body weight, and thus serve as a model of isolated maternal insulin resistance. Wild-type (WT) offspring of IRS1-het dams insulin resistance-exposed [IR-exposed] were compared with WT offspring of WT dams. Despite no differences in adiposity, male IR-exposed pups were glucose intolerant (P = 0.04) and hyperinsulinemic (1.3-fold increase, P = 0.02) by 1 month of age and developed progressive fasting hyperglycemia. Moreover, male IR-exposed pups challenged with high-fat diet exhibited insulin resistance. Liver lipidomic analysis of 3-week-old IR-exposed males revealed increases in the 16:1n7 fraction of several lipid classes, suggesting increased Scd1 activity. By 6 months of age, IR-exposed males had increased lipid accumulation in liver as well as increased plasma refed fatty acids, consistent with disrupted lipid metabolism. Our results indicate that isolated maternal insulin resistance, even in the absence of hyperglycemia or obesity, can promote metabolic perturbations in male offspring.
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Affiliation(s)
- Elvira Isganaitis
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Melissa Woo
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Huijuan Ma
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Michael Chen
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Wen Kong
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Aristides Lytras
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Vicencia Sales
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | | | - Kyung-Ju Lee
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Cianna Leatherwood
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Deborah Lee
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | - Connor Fitzpatrick
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
| | | | | | - Mary-Elizabeth Patti
- Division of Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA
- Corresponding author: Mary-Elizabeth Patti,
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15
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Sokup A, Ruszkowska-Ciastek B, Walentowicz-Sadłecka M, Grabiec M, Rość D. Gestational diabetes mellitus worsens the profile of cardiometabolic risk markers and decrease indexes of beta-cell function independently of insulin resistance in nondiabetic women with a parental history of type 2 diabetes. J Diabetes Res 2014; 2014:743495. [PMID: 25097861 PMCID: PMC4109116 DOI: 10.1155/2014/743495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 03/14/2014] [Accepted: 05/10/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Women with a history of both parental type 2 diabetes (pt2DM) and previous gestational diabetes (pGDM) represent a group at high risk of cardiovascular events. We hypothesized that pGDM changes cardiometabolic risk markers levels as well as theirs associations with glucose indices in nondiabetic pt2DM women. METHODS Anthropometric parameters, glucose regulation (OGTT), insulin resistance (HOMA-IR), beta-cell function, lipid levels, parameters of endothelial dysfunction, and inflammation were evaluated in 55 women with pt2DM, 40 with both pt2DM and pGDM 2-24 months postpartum, and 35 controls. RESULTS Prediabetes was diagnosed more frequently in women with both pt2DM and pGDM in comparison with women with only pt2DM (10 versus 8, P = 0.04). The pGDM group had higher LDL-cholesterol, sICAM-1, tPa Ag, fibrinogen, and lower beta-cell function after adjustment for HOMA-IR, in comparison with pt2DM group. In pt2DM group postchallenge glucose correlated independently with hsCRP and in pGDM group fasting glucose with HOMA-IR. CONCLUSIONS pGDM exerts a combined effect on cardiometabolic risk markers in women with pt2DM. In these women higher LDL-cholesterol, fibrinogen, sICAM-1, tPa Ag levels and decreased beta cell function are associated with pGDM independently of HOMA-IR index value. Fasting glucose is an important cardiometabolic risk marker and is independently associated with HOMA-IR.
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Affiliation(s)
- Alina Sokup
- Department of Gastroenterology, Angiology and Internal Diseases, Nicolaus Copernicus University, Dr. J. Biziel University Hospital, Ujejskiego 75, 85-168 Bydgoszcz, Poland
- Department of Endocrinology, Dr. J. Biziel University Hospital, Ujejskiego 75, 85-168 Bydgoszcz, Poland
- *Alina Sokup:
| | - Barbara Ruszkowska-Ciastek
- Department of Pathophysiology, Nicolaus Copernicus University, Dr. A. Jurasz University Hospital, Skłodowskiej-Curie 9, 85-094 Bydgoszcz, Poland
| | - Małgorzata Walentowicz-Sadłecka
- Department of Obstetrics and Gynecology, Nicolaus Copernicus University, Dr. J. Biziel University Hospital, Ujejskiego 75, 85-168 Bydgoszcz, Poland
| | - Marek Grabiec
- Department of Obstetrics and Gynecology, Nicolaus Copernicus University, Dr. J. Biziel University Hospital, Ujejskiego 75, 85-168 Bydgoszcz, Poland
| | - Danuta Rość
- Department of Pathophysiology, Nicolaus Copernicus University, Dr. A. Jurasz University Hospital, Skłodowskiej-Curie 9, 85-094 Bydgoszcz, Poland
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16
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Neuhaus T, Graf C, Stier S, Knapp M, Grunewald E, Ko YD, Sorger M. Variation in the Calpain-10 gene is not associated with gestational diabetes mellitus. Scandinavian Journal of Clinical and Laboratory Investigation 2013; 74:59-66. [DOI: 10.3109/00365513.2013.857427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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Human systems immunology: hypothesis-based modeling and unbiased data-driven approaches. Semin Immunol 2013; 25:193-200. [PMID: 23375135 PMCID: PMC3836867 DOI: 10.1016/j.smim.2012.11.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 11/08/2012] [Indexed: 11/23/2022]
Abstract
Systems immunology is an emerging paradigm that aims at a more systematic and quantitative understanding of the immune system. Two major approaches have been utilized to date in this field: unbiased data-driven modeling to comprehensively identify molecular and cellular components of a system and their interactions; and hypothesis-based quantitative modeling to understand the operating principles of a system by extracting a minimal set of variables and rules underlying them. In this review, we describe applications of the two approaches to the study of viral infections and autoimmune diseases in humans, and discuss possible ways by which these two approaches can synergize when applied to human immunology.
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18
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Ryan AS, McLenithan JC, Zietowski GM. Accelerated metabolic susceptibility to type 2 diabetes in older women with a history of gestational diabetes. Endocr Connect 2013; 2:79-86. [PMID: 23781323 PMCID: PMC3680953 DOI: 10.1530/ec-12-0072] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 02/21/2013] [Indexed: 11/12/2022]
Abstract
The purpose of this study is to compare central obesity, insulin sensitivity, and cardiovascular disease risk factors between premenopausal and postmenopausal women with a history of gestational diabetes mellitus (GDM), controls, and women with type 2 diabetes (T2DM). Subjects were 73 overweight/obese and sedentary women who had a history of GDM (n=31) and were either premenopausal (n=11, 44±1 years, X±s.e.m.), postmenopausal (n=20, 58±1 years), or without a history of GDM as healthy postmenopausal controls (n=27, 57±1 years) or postmenopausal with T2DM (n=16, 59±1 years). The premenopausal GDM women had higher maximal oxygen uptake and lower visceral fat than the other three groups (P<0.05). BMI, %body fat, subcutaneous abdominal fat, and intramuscular fat did not differ significantly among the four groups. Glucose utilization (M, 3 h 40 mU/m(2) per min hyperinsulinemic-euglycemic clamps) was 27% higher (P=0.05) in pre- than postmenopausal GDM and was not different between premenopausal GDM and postmenopausal controls. M was 28% lower (P=0.06) in postmenopausal GDM than controls and was not significantly different between postmenopausal GDM and T2DM groups. Thus, despite being younger and more physically fit, premenopausal women with prior GDM display similar central obesity, glucose, and metabolic profiles as postmenopausal controls. Postmenopausal women with prior GDM are more insulin resistant than controls of similar age, adiposity, and fitness levels and display comparable glucose utilization rates as similar as women with T2DM suggesting that a prior history of GDM may be an early manifestation of increased risk of later T2DM.
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Affiliation(s)
- Alice S Ryan
- Division of Endocrinology, Diabetes and Obesity, Endocrinology, Diabetes and Nutrition at the University of Maryland School of Medicine660 West Redwood Street HH 490, Baltimore, Maryland, 21201USA
- Correspondence should be addressed to A S Ryan Email
| | - John C McLenithan
- The Baltimore Geriatric Research, Education and Clinical Center (GRECC)10 North Greene Street GRECC (BT/18/GR) Baltimore VAMC, Baltimore, Maryland, 21201USA
| | - Gretchen M Zietowski
- Division of Endocrinology, Diabetes and Obesity, Endocrinology, Diabetes and Nutrition at the University of Maryland School of Medicine660 West Redwood Street HH 490, Baltimore, Maryland, 21201USA
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19
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Wen SW, Xie RH, Tan H, Walker MC, Smith GN, Retnakaran R. Preeclampsia and gestational diabetes mellitus: pre-conception origins? Med Hypotheses 2012; 79:120-5. [PMID: 22541860 DOI: 10.1016/j.mehy.2012.04.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 04/03/2012] [Indexed: 02/08/2023]
Abstract
Preeclampsia (PE) and gestational diabetes mellitus (GDM) are two of the most common medical complications of pregnancy, with risks for both mother and child. Like many other antepartum complications, PE and GDM occur only in pregnancy. However, it is not clear if pregnancy itself is the cause of these complications or it these conditions are caused by factors that existed prior to gestation. In this paper, we hypothesize that although the clinical findings of PE and GDM are first noted during pregnancy, the origins of both conditions may actually precede pregnancy. We further hypothesize that pathophysiologic changes underlying PE and GDM are present prior to pregnancy, but remain undetected in the non-gravid state either because pregnancy is the trigger that makes these pathologies become clinically detectable or because there has been limited prospective longitudinal data comparing the pre-gravid and antepartum status of women that go on to develop these conditions. Rigorous prospective cohort studies in which women undergo serial systematic evaluation in the pre-conception period, throughout pregnancy and into the postpartum are ideally needed to test this hypothesis of pre-conception origins of PE and GDM. In this context, we are creating a pre-conception cohort, involving about 5000 couples who plan to have a baby within six months in Liuyang county in the Chinese province of Hunan. Results from this pre-conception cohort program should be able to provide definitive answer to the question of whether the underpinnings of PE and GDM originate prior to pregnancy. Ultimately, the significance of addressing this hypothesis is underscored by its potential implications for targeted interventions that could be designed to (i) prevent the deleterious effects of PE/GDM and (ii) thereby interrupt the vicious cycle of disease that links affected women and their offspring.
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Affiliation(s)
- S W Wen
- OMNI Research Group, Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Canada
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20
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Vrachnis N, Belitsos P, Sifakis S, Dafopoulos K, Siristatidis C, Pappa KI, Iliodromiti Z. Role of adipokines and other inflammatory mediators in gestational diabetes mellitus and previous gestational diabetes mellitus. Int J Endocrinol 2012; 2012:549748. [PMID: 22550485 PMCID: PMC3328961 DOI: 10.1155/2012/549748] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 01/26/2012] [Indexed: 12/22/2022] Open
Abstract
Previous Gestational Diabetes Mellitus (pGDM) is a common condition and has been associated with future development of Type 2 Diabetes Mellitus (T2DM) and Metabolic Syndrome (MS) in women affected. The pathogenesis and risk factors implicated in the development of these conditions later in the lives of women with pGDM are not as yet fully understood. Research has recently focused on a group of substances produced mainly by adipose tissue called adipokines, this group including, among others, adiponectin, leptin, Retinol-Binding Protein-4 (RBP-4), and resistin. These substances as well as other inflammatory mediators (CRP, IL-6, PAI-1, TNF-α) seem to play an important role in glucose tolerance and insulin sensitivity dysregulation in women with pGDM. We summarize the data available on the role of these molecules.
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Affiliation(s)
- Nikolaos Vrachnis
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaieio Hospital, 11528 Athens, Greece
- *Nikolaos Vrachnis:
| | - Panagiotis Belitsos
- Department of Obstetrics and Gynaecology, General Hospital of Chalkida, Evia, Chalkida 34100, Greece
| | - Stavros Sifakis
- Department of Obstetrics and Gynaecology, University Hospital of Heraklion, 71110 Heraklio, Crete, Greece
| | - Konstantinos Dafopoulos
- Department of Obstetrics and Gynaecology, Medical School, University of Thessaly, 41334 Larissa, Greece
| | | | - Kalliopi I. Pappa
- 1st Department of Obstetrics and Gynecology, University of Athens, School of Medicine, Athens, Greece
| | - Zoe Iliodromiti
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaieio Hospital, 11528 Athens, Greece
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21
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Negrato CA, Jovanovic L, Tambascia MA, Geloneze B, Dias A, Calderon IDMP, Rudge MVC. Association between insulin resistance, glucose intolerance, and hypertension in pregnancy. Metab Syndr Relat Disord 2010; 7:53-9. [PMID: 18847384 DOI: 10.1089/met.2008.0043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
There is an association between insulin resistance, glucose intolerance, and essential hypertension, but the relation between insulin resistance, glucose intolerance, and hypertension diagnosed during pregnancy is not well understood. Transient hypertension of pregnancy, the new-onset nonproteinuric hypertension of late pregnancy, is associated with a high risk of later essential hypertension and glucose intolerance; thus, these conditions may have a similar pathophysiology. To assess the association between insulin resistance, glucose intolerance, essential hypertension, and subsequent development of proteinuric and nonproteinuric hypertension in pregnancy in women without underlying essential hypertension, we performed a prospective study comparing glucose (fasting, 1 and 2 hours postglucose load), insulin, glycosylated hemoglobin (HbA1c), high-density lipoprotein cholesterol (HDL-C), and triglycerides levels on routine screening for gestational diabetes mellitus. Women who developed hypertension in pregnancy (n = 37) had higher glycemic levels (fasting, 1 and 2 hours postglucose load) on a 100-gram oral glucose loading test, although only the fasting values showed a statistical significance (p < 0.05), and a significantly higher frequency of abnormal glucose loading tests, two hours after glucose load (>or=140 mg/dL) (p < 0.05) than women who remained normotensive (n = 180). Glucose intolerance was common in women who developed both subtypes of hypertension, particularly preeclampsia. Women who developed hypertension had greater prepregnancy body mass index (p < 0.0001), higher frequency and intensity of acanthosis nigricans (p < 0.0001), and higher baseline systolic and diastolic blood pressures (p <or= 0.0001 for both), although all subjects were normotensive at baseline by study design; they also presented lower levels of HDL-C (p < 0.05). However, after adjustment for these and other potential confounders, an abnormal glucose loading test remained a significant predictor of development of hypertension (p < 0.05) and, specifically, preeclampsia (p < 0.01). There was a trend toward higher insulin and homeostasis model assessment-insulin resistance (HOMA-IR) levels in women developing any type of hypertension. When comparing women that remained normotensive to term with those with transient hypertension and preeclampsia, the preeclamptic women were born with lower weight (p < 0.05) and shorter length (p < 0.005); at screening they were older (p < 0.005), showed higher frequency and intensity of acanthosis nigricans (p < 0.0001), had higher prepregnancy BMI (p < 0.0005), as well as higher baseline systolic and diastolic blood pressures (p <or= 0.0001 for both). They also showed higher HOMA-IR levels that did not show a statistical significance. When glucose tolerance status was taken in account, an association was found between increasing indexes of hypertension (p < 0.05) and of HOMA-IR (p < 0.05) with the worsening of glucose tolerance. These results suggest that insulin resistance and relative glucose intolerance are associated with an increased risk of new-onset hypertension in pregnancy, particularly preeclampsia, and support the hypothesis that insulin resistance may play a role in the pathogenesis of this disorder.
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Ahrén B, Accili D, Boitard C, Efendic S, Henquin JC, Seino S, Steiner DF, Cerasi E. β-Cell research - A decade of rapid growth. Diabetes Obes Metab 2009; 11 Suppl 4:iv-ix. [PMID: 19817782 DOI: 10.1111/j.1463-1326.2009.01143.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Kahn SE, Carr DB, Faulenbach MV, Utzschneider KM. An examination of beta-cell function measures and their potential use for estimating beta-cell mass. Diabetes Obes Metab 2008; 10 Suppl 4:63-76. [PMID: 18834434 DOI: 10.1111/j.1463-1326.2008.00945.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A characteristic and dominant feature of type 2 diabetes is a reduction in beta-cell function that is associated with a decrease in beta-cell volume. A decline in the first-phase insulin response following intravenous glucose administration can be demonstrated as the fasting glucose concentration increases. This response is completely absent before the glucose threshold that defines diabetes has been reached and at a time when beta-cells are clearly still present, implying that a functional beta-cell lesion has to exist independent of beta-cell loss. Surgical or chemical reductions of up to 65% of beta-cell volume demonstrate that functional adaptation of the normal beta-cell prevents a rise in fasting glucose or reduction in first-phase insulin response. However, the ability of glucose to potentiate the beta-cell's response to non-glucose secretagogues is reduced and is more closely associated with the reduction in beta-cell volume. The future, in terms of prevention and treatment of type 2 diabetes, lies in the ability to prevent and revert both beta-cell loss and dysfunction. However, until beta-cell volume can be quantified reliably and non-invasively, we will need to rely on the ability of glucose to potentiate insulin release as the best surrogate estimate of the number of beta-cells.
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Affiliation(s)
- S E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System and University of Washington, Seattle, WA 98108, USA.
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24
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Succurro E, Marini MA, Frontoni S, Hribal ML, Andreozzi F, Lauro R, Perticone F, Sesti G. Insulin secretion in metabolically obese, but normal weight, and in metabolically healthy but obese individuals. Obesity (Silver Spring) 2008; 16:1881-6. [PMID: 18551117 DOI: 10.1038/oby.2008.308] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Metabolically obese but normal-weight (MONW) individuals present metabolic disturbances typical of obese individuals. Additionally, metabolically healthy but obese (MHO) individuals have been identified who are relatively insulin sensitive and have a favorable cardiovascular risk profile. We compared insulin secretion patterns of MONW and MHO with those of two age-matched groups comprising nonobese individuals or obese insulin-resistant subjects, respectively. To this end, 110 nonobese subjects and 87 obese subjects were stratified into quartile based on their insulin-stimulated glucose disposal (M(FFM)). Insulin secretion was estimated by acute insulin response (AIR) during an intravenous glucose-tolerance test (IVGTT), and the disposition index was calculated as AIR x M(FFM). We found that, as defined, M(FFM) was lower in MONW, who exhibited higher triglycerides, free-fatty acid (FFA), and 2-h postchallenge glucose levels compared to normal nonobese group. Insulin secretion was higher in MONW than in normal nonobese subjects, but disposition index was lower in MONW. Disposition index did not differ between MONW and insulin-resistant obese. M(FFM) was higher in MHO who exhibited lower waist circumference, blood pressure (BP), triglycerides, FFA, insulin levels, and higher high-density lipoprotein (HDL) cholesterol compared to insulin-resistant obese. Insulin secretion did not differ between insulin-resistant obese and MHO, but disposition index was lower in the former group. In conclusion, MONW and insulin-resistant obese showed decreased compensatory insulin secretion compared to normal nonobese and MHO subjects, respectively. Because these subjects also exhibited a worse metabolic risk profile, these findings may account for their increased risk for type 2 diabetes.
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Affiliation(s)
- Elena Succurro
- 1Department of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy
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25
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Tura A, Mari A, Prikoszovich T, Pacini G, Kautzky-Willer A. Value of the intravenous and oral glucose tolerance tests for detecting subtle impairments in insulin sensitivity and beta-cell function in former gestational diabetes. Clin Endocrinol (Oxf) 2008; 69:237-43. [PMID: 18194489 DOI: 10.1111/j.1365-2265.2008.03178.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Women with former gestational diabetes mellitus (fGDM) often show defects in both insulin sensitivity and beta-cell function but it is not clear which defect plays the major role or which appears first. This might be because fGDM women are often studied as a unique group and not divided according to their glucose tolerance. Different findings might also be the result of using different tests. Our aim was to study insulin sensitivity and beta-cell function with two independent glucose tolerance tests in fGDM women divided according to their glucose tolerance. DESIGN AND PATIENTS A total of 108 fGDM women divided into normal glucose tolerance (IGT; N = 82), impaired glucose metabolism (IGM; N = 20) and overt type 2 diabetes (T2DM; N = 6) groups, and 38 healthy control women (CNT) underwent intravenous (IVGTT) and oral glucose tolerance tests (OGTT). Measurements Insulin sensitivity and beta-cell function were assessed by both the IVGTT and the OGTT. RESULTS Both tests revealed impaired insulin sensitivity in the normotolerant group compared to controls (IVGTT: 4.2 +/- 0.3 vs. 5.4 +/- 0.4 10(-4) min(-1) (microU/ml)(-1); OGTT: 440 +/- 7 vs. 472 +/- 9 ml min(-1) m(-2)). Conversely, no difference was found in beta-cell function from the IVGTT. However, some parameters of beta-cell function by OGTT modelling analysis were found to be impaired: glucose sensitivity (106 +/- 5 vs. 124 +/- 7 pmol min(-1) m(-2) mm(-1), P = 0.0407) and insulin secretion at 5 mm glucose (168 +/- 9 vs. 206 +/- 10 pmol min(-1) m(-2), P = 0.003). CONCLUSIONS Both insulin sensitivity and beta-cell function are impaired in normotolerant fGDM but the subtle defect in beta-cell function is disclosed only by OGTT modelling analysis.
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Affiliation(s)
- A Tura
- Institute of Biomedical Engineering, CNR, Padua, Italy
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Seghieri G, Tesi F, Anichini R, De Bellis A, Barsotti E, Mari A, Ferrannini E. Influence of gestational diabetes on the long-term control of glucose tolerance. Diabetologia 2007; 50:2234-8. [PMID: 17768604 DOI: 10.1007/s00125-007-0802-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Accepted: 07/09/2007] [Indexed: 11/26/2022]
Abstract
AIMS/HYPOTHESIS Gestational diabetes (GDM) carries a high risk of subsequent diabetes. We asked what impact prior GDM has on beta cell function and insulin action in women who maintain normal glucose tolerance (NGT) for a long time. METHODS Ninety-one women with NGT (aged 41 +/- 8 years, mean+/-SD) were studied (by mathematical modelling of the C-peptide response to an OGTT) 7 [6] years (median [interquartile range]) after the index pregnancy, during which 52 had GDM (pGDM) and 39 had NGT (pNGT). In all women an OGTT had also been performed at 29 +/- 3 weeks of the index pregnancy. RESULTS Women with pGDM were matched with women with pNGT for age, familial diabetes, time and weight gain since index pregnancy, parity, BMI (25.4 +/- 3.9 vs 26.8 +/- 6.4 kg/m(2)), and fasting (4.64 +/- 0.56 vs 4.97 +/- 0.46 mmol/l) and 2 h plasma glucose levels (5.91 +/- 1.14 vs 5.91 +/- 1.21 mmol/l). Nonetheless, fasting (49 [29] vs 70 [45] pmol min(-1) m(-2), p < 0.001) and total insulin secretion (32 [17] vs 48 [21] nmol m(-2), p < 0.0001) and beta cell glucose sensitivity (slope of the insulin secretion/plasma glucose concentration-response function) (95 [71] vs 115 [79] pmol min(-1) m(-2) (mmol/l)(-1), p = 0.025) were reduced in the pGDM group compared with the pNGT group, while insulin sensitivity was preserved (424 [98] vs 398 [77] ml min(-1) m(-2)). At index pregnancy, women with pGDM and those with pNGT had similar age and BMI. However, both insulin sensitivity (359 [93] vs 417 [92] ml min(-1) m(-2), p = 0.0012) and the insulin/glucose incremental area ratio (an empirical index of beta cell function; 98 [74] vs 138 [122] pmol/mmol, p = 0.028) were reduced in women with pGDM. CONCLUSIONS Even in women who maintain normal insulin sensitivity, impaired beta cell function is carried over into the NGT status several years after a GDM pregnancy.
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Affiliation(s)
- G Seghieri
- Division of Internal Medicine, Spedali Riuniti, Pistoia, Italy
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Bergman RN, Kim SP, Hsu IR, Catalano KJ, Chiu JD, Kabir M, Richey JM, Ader M. Abdominal obesity: role in the pathophysiology of metabolic disease and cardiovascular risk. Am J Med 2007; 120:S3-8; discussion S29-32. [PMID: 17296343 DOI: 10.1016/j.amjmed.2006.11.012] [Citation(s) in RCA: 158] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Visceral adiposity has been identified as an independent risk factor for cardiovascular disease and the so-called metabolic syndrome. The canine obesity model closely recapitulates the correlation between human visceral adiposity and insulin resistance. A recent canine study indicates that insulin expands the volume of distribution associated with skeletal muscle, and that its ability to enhance macromolecular distribution within this space is blunted in the fat-fed obese canine model. Our canine study supports the portal theory of insulin resistance, in which free fatty acids (FFAs) from visceral fat directly enter the liver and have a detrimental effect on insulin action. The role of adipokines in this condition remains less clear. Sympathetic nervous system hyperactivity in obesity may also contribute to excessive FFA release, hypertension, and insulin resistance. Pathologies interrelated with insulin resistance include beta-cell hypersecretion, reduced insulin clearance, and resultant hyperinsulinemia. An observed nocturnal increase in plasma FFA levels may account for both insulin resistance and compensatory hyperinsulinemia and warrants further investigation. The elucidation of these interrelated pathologies may help reveal points where medical intervention can reduce metabolic disease.
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Affiliation(s)
- Richard N Bergman
- Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA.
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Kahn SE, Hull RL, Utzschneider KM. Mechanisms linking obesity to insulin resistance and type 2 diabetes. Nature 2007; 444:840-6. [PMID: 17167471 DOI: 10.1038/nature05482] [Citation(s) in RCA: 3363] [Impact Index Per Article: 197.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Obesity is associated with an increased risk of developing insulin resistance and type 2 diabetes. In obese individuals, adipose tissue releases increased amounts of non-esterified fatty acids, glycerol, hormones, pro-inflammatory cytokines and other factors that are involved in the development of insulin resistance. When insulin resistance is accompanied by dysfunction of pancreatic islet beta-cells - the cells that release insulin - failure to control blood glucose levels results. Abnormalities in beta-cell function are therefore critical in defining the risk and development of type 2 diabetes. This knowledge is fostering exploration of the molecular and genetic basis of the disease and new approaches to its treatment and prevention.
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Affiliation(s)
- Steven E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, VA Puget Sound Health Care System and University of Washington, 1660 South Columbian Way, Seattle, Washington 98108, USA.
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Eroglu D, Zeyneloglu HB. Metabolic disorders in patients with recent gestational diabetes mellitus. J Obstet Gynaecol Res 2006; 32:408-15. [PMID: 16882267 DOI: 10.1111/j.1447-0756.2006.00418.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To determine metabolic disorders in patients with recent gestational diabetes mellitus (GDM) compared with controls. METHODS Thirty-six patients with recent GDM and treated with a diabetic diet only, and 33 controls with normal pregnancies, were included in the study. An oral glucose tolerance test, with corresponding insulin and hormone levels, was performed; the homeostatic model assessment scores were calculated to estimate insulin resistance; prevalence of polycystic ovarian morphology on ultrasound scan was assessed; and results were recorded 10-15 months after delivery. RESULTS Waist : hip ratio and fasting cholesterol and triglyceride levels were significantly higher in women with recent GDM; high-density lipoprotein cholesterol did not differ between groups. Fasting, 1-h and 2-h plasma glucose levels were significantly higher in the GDM group; no statistically significant difference was found between groups regarding fasting insulin levels, 1-h and 2-h insulin response, and homeostatic model assessment scores. Serum hormone levels did not differ between groups. The prevalence of polycystic ovarian morphology was greater in women with GDM. There was no difference in any metabolic parameter between women in the GDM group with polycystic ovaries and those with normal ovaries. CONCLUSIONS We found a higher prevalence of polycystic ovarian morphology in women with GDM than in controls. Among women with recent GDM, higher waist : hip ratios and fasting plasma glucose and triglyceride levels may indicate metabolic syndrome. In women with recent GDM managed by diet only, insulin resistance may not be detected in the short term.
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Affiliation(s)
- Derya Eroglu
- Department of Obstetrics and Gynecology, Baskent University Faculty of Medicine, Ankara, Turkey
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McLachlan KA, O'Neal D, Jenkins A, Alford FP. Do adiponectin, TNFalpha, leptin and CRP relate to insulin resistance in pregnancy? Studies in women with and without gestational diabetes, during and after pregnancy. Diabetes Metab Res Rev 2006; 22:131-8. [PMID: 16170833 DOI: 10.1002/dmrr.591] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND The role of adiponectin, tumour necrosis factor alpha (TNFalpha), leptin and C-reactive protein in the insulin resistance of pregnancy is not clear. We measured their levels in women with gestational diabetes (GDM) and in controls, during and after pregnancy, and related them to insulin secretion and action. METHODS Nineteen women with GDM and 19 BMI-matched healthy pregnant women underwent intravenous glucose tolerance tests in the third trimester of pregnancy and 4 months postpartum to determine insulin sensitivity (SI) and insulin secretion. Adiponectin, TNFalpha, leptin and high sensitivity CRP (hsCRP) were measured in fasted blood. RESULTS Of the circulating factors, only leptin (r = -0.41, p = 0.01) correlated with SI in pregnancy. Leptin and hsCRP levels were elevated in pregnancy compared to postpartum (leptin (mean +/- SEM): 27.8 +/- 2.4 vs 19.3 +/- 2.1 ng/mL, p < 0.001; hsCRP: 5.2 +/- 0.7 vs 3.2 +/- 0.6 mg/L, p < 0.001). Adiponectin levels did not change from pregnancy to postpartum, despite a marked increase in SI. All four factors correlated with SI postpartum (adiponectin: r = 0.38, p = 0.01; TNFalpha: r = -0.48, p = 0.002; Leptin: r = -0.61, p = 0.001; hsCRP: r = -0.48, p = 0.002). TNFalpha correlated inversely with insulin secretion in pregnancy (r = -0.35, p = 0.03) and was significantly higher in the GDM group (2.62 +/- 0.3 vs 1.88 +/- 0.3 pg/mL, p = 0.01) in pregnancy. CONCLUSION In our study, the influence of adiponectin, TNFalpha and hsCRP upon SI is overwhelmed by other factors in pregnancy. While leptin and SI correlated in pregnancy, it is unclear whether this represents cause or effect. Finally, TNFalpha may exert an inhibitory effect on insulin secretion in GDM, contributing to the associated hyperglycaemia.
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Affiliation(s)
- Kylie A McLachlan
- Department of Endocrinology, St Vincents Hospital, Victoria, Australia.
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Meier JJ, Gallwitz B, Askenas M, Vollmer K, Deacon CF, Holst JJ, Schmidt WE, Nauck MA. Secretion of incretin hormones and the insulinotropic effect of gastric inhibitory polypeptide in women with a history of gestational diabetes. Diabetologia 2005; 48:1872-81. [PMID: 16010522 DOI: 10.1007/s00125-005-1863-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2005] [Accepted: 04/05/2005] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS The insulinotropic effect of gastric inhibitory polypeptide (GIP) is reduced in patients with type 2 diabetes and around 50% of their first-degree relatives under hyperglycaemic conditions. It is unknown whether this is a result of a specific defect in GIP action or of a general reduction in beta cell function. Moreover, impaired secretion of glucagon-like peptide 1 (GLP-1) has been described in patients with type 2 diabetes. Therefore, we studied the insulinotropic effect of GIP in women with previous gestational diabetes (pGDM) under euglycaemic fasting conditions and during a hyperglycaemic clamp experiment. The secretion of GIP and GLP-1 was assessed following oral glucose ingestion. MATERIALS AND METHODS On separate occasions we performed an OGTT and administered an i.v. bolus of 20 pmol GIP/kg body weight in 20 women with pGDM and 20 control women. An additional hyperglycaemic clamp experiment (140 mg/dl [7.8 mmol/l] over 120 min) with i.v. infusion of GIP (2 pmol kg(-1) min(-1); 30-90 min) was performed in 14 women in each group. Capillary and venous blood samples were drawn for the measurement of glucose (glucose oxidase), insulin, C-peptide, GIP and GLP-1 (specific immunoassays). Indices of insulin sensitivity and beta cell function were calculated. Statistical analyses were carried out using repeated measures ANOVA. RESULTS Following oral glucose ingestion, plasma glucose, insulin and C-peptide concentrations increased to higher levels in the women with pGDM than in the control women (p<0.05). The women with pGDM were characterised by a higher degree of insulin resistance than the control women (p=0.007 for the Matsuda index), but showed no overt defects in glucose-stimulated insulin secretion (p=0.40 for the insulinogenic index following i.v. glucose). The secretion of GLP-1 and GIP was not different between the groups (p=0.87 and p=0.57, respectively). The insulin secretory response to GIP administration was similar in the two groups both after GIP bolus administration and during the hyperglycaemic clamp experiment (p=0.99 and p=0.88, respectively). A hyperbola-like relationship was found between the degree of insulin sensitivity (Matsuda index) and the insulin secretory response to GIP and i.v. glucose administration. CONCLUSIONS/INTERPRETATION These results do not support the hypothesis of an early defect in GIP action as a risk factor for subsequent development of diabetes in women with previous gestational diabetes. The inverse relationship between insulin resistance and the insulin secretory response to glucose or GIP suggests that beta cell secretory function in response to different stimuli increases adaptively when insulin sensitivity is diminished.
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Affiliation(s)
- J J Meier
- Department of Medicine I, St Josef Hospital, Ruhr-University of Bochum, Bochum, Germany.
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McLachlan KA, Boston R, Alford FP. Impaired non-esterified fatty acid suppression to intravenous glucose during late pregnancy persists postpartum in gestational diabetes: a dominant role for decreased insulin secretion rather than insulin resistance. Diabetologia 2005; 48:1373-9. [PMID: 15940468 DOI: 10.1007/s00125-005-1775-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2004] [Accepted: 02/22/2005] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS Non-esterified fatty acids are implicated in the pathogenesis of gestational (GDM) and type 2 diabetes. We examined the relationship between NEFA dynamics, insulin resistance and beta cell dysfunction in women with GDM in late pregnancy and postpartum. METHODS A total of 19 Caucasian women with GDM and 19 healthy pregnant women matched for BMI and age underwent an IVGTT in the third trimester and 4 months postpartum, deriving values for insulin sensitivity (SI), insulin secretion (AIRg) and disposition index (DI). NEFA levels were measured serially. RESULTS In pregnancy, the GDM women had similar SI but reduced AIRg and DI compared with control subjects. The GDM group demonstrated significantly slower NEFA suppression, which was attributable to the GDM women who required insulin during pregnancy (n=7) and who had markedly reduced AIRg and K(NEFA) (NEFA disappearance constant) compared with their matched controls. In contrast, GDM subjects not requiring insulin (n=12) had similar NEFA suppression curves and AIRg to control subjects. Postpartum, GDM subjects demonstrated reduced SI and DI. The impaired suppression of NEFA persisted postpartum, but again only in the subgroup of GDM subjects who had required insulin during pregnancy. Furthermore, K(NEFA) correlated with AIRg and DI in both states, but not with SI. CONCLUSIONS/INTERPRETATION Impaired NEFA suppression occurs in GDM subjects both in late pregnancy and postpartum in response to IVGTT-induced endogenous insulin secretion. The impaired NEFA suppression is present in GDM women with the most severe beta cell dysfunction (who had required insulin during pregnancy) and is related to their insulin secretory dysfunction rather than their reduced SI.
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Affiliation(s)
- K A McLachlan
- Department of Endocrinology and Diabetes, St Vincent's Hospital, Fitzroy, Australia.
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Abstract
Gestational diabetes mellitus (GDM) is defined as glucose intolerance of various degrees that is first detected during pregnancy. GDM is detected through the screening of pregnant women for clinical risk factors and, among at-risk women, testing for abnormal glucose tolerance that is usually, but not invariably, mild and asymptomatic. GDM appears to result from the same broad spectrum of physiological and genetic abnormalities that characterize diabetes outside of pregnancy. Indeed, women with GDM are at high risk for having or developing diabetes when they are not pregnant. Thus, GDM provides a unique opportunity to study the early pathogenesis of diabetes and to develop interventions to prevent the disease.
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Affiliation(s)
- Thomas A Buchanan
- Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, California 90089-9317, USA.
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Retnakaran R, Hanley AJG, Raif N, Hirning CR, Connelly PW, Sermer M, Kahn SE, Zinman B. Adiponectin and beta cell dysfunction in gestational diabetes: pathophysiological implications. Diabetologia 2005; 48:993-1001. [PMID: 15778860 DOI: 10.1007/s00125-005-1710-x] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2004] [Accepted: 12/06/2004] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS Gestational diabetes mellitus (GDM) identifies a population of young women at high risk of developing type 2 diabetes and thus provides an excellent model for studying early events in the natural history of this disease. Adiponectin, a novel adipocyte-derived protein with insulin-sensitising properties, has been proposed as a factor linking insulin resistance and beta cell dysfunction in the pathogenesis of type 2 diabetes. We conducted the current investigation to determine whether adiponectin is associated with beta cell dysfunction in GDM. METHODS We studied 180 women undergoing OGTT in late pregnancy. Based on the OGTT results, participants were stratified into three groups: (1) NGT (n=93); (2) IGT (n=39); and (3) GDM (n=48). First-phase insulin secretion was determined using a validated index previously proposed by Stumvoll. Insulin sensitivity was assessed using the validated OGTT insulin sensitivity index of Matsuda and DeFronzo (IS(OGTT)). RESULTS To evaluate beta cell function in relation to ambient insulin sensitivity, an insulin secretion-sensitivity index (ISSI) was derived from the product of the Stumvoll index and the IS(OGTT), based on the existence of the predicted hyperbolic relationship between these two measures. Mean ISSI was highest in the NGT group (6,731), followed by that in the IGT group (4,976) and then that in the GDM group (3,300) (overall p<0.0001), compatible with the notion of declining beta cell function across these glucose tolerance groups. Importantly, adiponectin was significantly correlated with ISSI (r=0.34, p<0.0001), with a stepwise increase in mean ISSI observed per tertile of adiponectin concentration (trend p<0.0001). In multivariate linear regression analysis, ISSI was positively correlated with adiponectin and negatively correlated with GDM, IGT and C-reactive protein (r(2)=0.54). CONCLUSIONS/INTERPRETATION Adiponectin concentration is an independent correlate of beta cell function in late pregnancy. As such, adiponectin may play a key role in mediating insulin resistance and beta cell dysfunction in the pathogenesis of diabetes.
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Affiliation(s)
- R Retnakaran
- Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada
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Abstract
Gestational diabetes mellitus (GDM) is defined as glucose intolerance of various degrees that is first detected during pregnancy. GDM is detected through the screening of pregnant women for clinical risk factors and, among at-risk women, testing for abnormal glucose tolerance that is usually, but not invariably, mild and asymptomatic. GDM appears to result from the same broad spectrum of physiological and genetic abnormalities that characterize diabetes outside of pregnancy. Indeed, women with GDM are at high risk for having or developing diabetes when they are not pregnant. Thus, GDM provides a unique opportunity to study the early pathogenesis of diabetes and to develop interventions to prevent the disease.
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Affiliation(s)
- Thomas A Buchanan
- Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, California 90089-9317, USA.
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Abstract
Insulin sensitivity and insulin secretion are reciprocally related such that insulin resistance is adapted by increased insulin secretion to maintain normal glucose and lipid homeostasis. The relation between insulin sensitivity and secretion is curvilinear and mathematically best described as a hyperbolic relation. Several potential mediators have been suggested to be signals for the beta cells to respond to insulin resistance such as glucose, free fatty acids, autonomic nerves, fat-derived hormones and the gut hormone glucagon-like peptide-1 (GLP-1). Failure of these signals or of the pancreatic beta cells to adequately adapt insulin secretion in relation to insulin sensitivity results in inappropriate insulin levels, impaired glucose intolerance (IGT) and type 2 diabetes. Therefore, treatment of IGT and type 2 diabetes should aim at restoring the normal relation between insulin sensitivity and secretion. Such treatment includes stimulation of insulin secretion (sulphonylureas, repaglinide and nateglinide) and insulin sensitivity (metformin and thiazolidinediones), as well as treatment aimed at supporting the signals mediating the islet adaptation (cholinergic agonists and GLP-1). Both, for correct understanding of diabetes pathophysiology and for development of novel treatment modalities, therefore, the non-linear inverse relation between insulin sensitivity and secretion needs to be acknowledged.
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Affiliation(s)
- B Ahrén
- Department of Medicine, Lund University, SE-221 84 Lund, Sweden.
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Pimenta WP, Calderon IMP, Cruz NS, Santos ML, Aragon FF, Padovani CR. Subclinical abnormalities of glucose metabolism in Brazilian women with a history of gestational diabetes mellitus. Acta Obstet Gynecol Scand 2004; 83:1152-8. [PMID: 15548148 DOI: 10.1111/j.0001-6349.2004.00444.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND To evaluate insulin release and insulin sensitivity in women with prior gestational diabetes mellitus (GDM) to gain a better understanding of type 2 diabetes pathogenesis. METHODS GDM women were individually matched for age, body mass index, and waist/hip ratio with those who were normal glucose tolerant in a previous pregnancy (NGT). All women presented with normal glucose tolerance. Twenty pairs were submitted to the oral glucose tolerance test (OGTT) with plasma glucose, insulin, and C-peptide determinations. Of the 20 pairs, 18 participated in hyperglycemic (10.0 mmol/l) clamp experiments with frequent plasma glucose and insulin determinations, allowing us to calculate first- and second-phase insulin release and the insulin sensitivity index. GDM and NGT women were compared using Student's t-test, the Mann-Whitney U-test, Friedman's non-parametric test, and the two proportion test for independent groups. RESULTS GDM women showed higher glycosylated hemoglobin values; at OGTT, they showed late insulin peak with increased plasma insulin levels only during the second hour, and a similar plasma C-peptide response despite a higher plasma glucose curve; during hyperglycemic clamp procedures, they showed similar biphasic insulin release and insulin sensitivity index. Considering that a woman with previous GDM had a defect in insulin release and/or insulin sensitivity, if its magnitude was at least 25% lower than that of the matched NGT woman, 43.8% showed impairment of first-phase insulin release and 55.6% insulin resistance. CONCLUSIONS GDM women showed some degree of glucose intolerance. It is therefore necessary to follow them for a longer time.
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Affiliation(s)
- Walkyria P Pimenta
- Division of Internal Medicine, Botucatu School of Medicine, Sao Paulo State University, Brazil.
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Goldfine AB, Bouche C, Parker RA, Kim C, Kerivan A, Soeldner JS, Martin BC, Warram JH, Kahn CR. Insulin resistance is a poor predictor of type 2 diabetes in individuals with no family history of disease. Proc Natl Acad Sci U S A 2003; 100:2724-9. [PMID: 12591951 PMCID: PMC151408 DOI: 10.1073/pnas.0438009100] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2002] [Indexed: 01/27/2023] Open
Abstract
In normoglycemic offspring of two type 2 diabetic parents, low insulin sensitivity (S(I)) and low insulin-independent glucose effectiveness (S(G)) predict the development of diabetes one to two decades later. To determine whether low S(I), low S(G,) or low acute insulin response to glucose are predictive of diabetes in a population at low genetic risk for disease, 181 normoglycemic individuals with no family history of diabetes (FH-) and 150 normoglycemic offspring of two type 2 diabetic parents (FH+) underwent i.v. glucose tolerance testing (IVGTT) between the years 1964-82. During 25 +/- 6 years follow-up, comprising 2,758 person years, the FH- cohort (54 +/- 9 years) had an age-adjusted incidence rate of type 2 diabetes of 1.8 per 1,000 person years, similar to that in other population-based studies, but significantly lower than 16.7 for the FH+ cohort. Even when the two study populations were subdivided by initial values of S(I) and S(G) derived from IVGTT's performed at study entry, there was a 10- to 20-fold difference in age-adjusted incidence rates for diabetes in the FH- vs. FH+ individuals with low S(I) and low S(G). The acute insulin response to glucose was not predictive of the development of diabetes when considered independently or when assessed as a function of S(I), i.e., the glucose disposition index. These data demonstrate that low glucose disposal rates are robustly associated with the development of diabetes in the FH+ individuals, but insulin resistance per se is not sufficient for the development of diabetes in individuals without family history of disease and strongly suggest a familial factor, not detectable in our current measures of the dynamic responses of glucose or insulin to an IVGTT is an important risk factor for type 2 diabetes. Low S(I) and low S(G), both measures of glucose disposal, interact with this putative familial factor to result in a high risk of type 2 diabetes in the FH+ individuals, but not in the FH- individuals.
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Kahn SE. The relative contributions of insulin resistance and beta-cell dysfunction to the pathophysiology of Type 2 diabetes. Diabetologia 2003; 46:3-19. [PMID: 12637977 DOI: 10.1007/s00125-002-1009-0] [Citation(s) in RCA: 1292] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2002] [Revised: 10/17/2002] [Indexed: 12/13/2022]
Abstract
The relative contributions of insulin resistance and beta-cell dysfunction to the pathophysiology of Type 2 diabetes have been debated extensively. The concept that a feedback loop governs the interaction of the insulin-sensitive tissues and the beta cell as well as the elucidation of the hyperbolic relationship between insulin sensitivity and insulin secretion explains why insulin-resistant subjects exhibit markedly increased insulin responses while those who are insulin-sensitive have low responses. Consideration of this hyperbolic relationship has helped identify the critical role of beta-cell dysfunction in the development of Type 2 diabetes and the demonstration of reduced beta-cell function in high risk subjects. Furthermore, assessments in a number of ethnic groups emphasise that beta-cell function is a major determinant of oral glucose tolerance in subjects with normal and reduced glucose tolerance and that in all populations the progression from normal to impaired glucose tolerance and subsequently to Type 2 diabetes is associated with declining insulin sensitivity and beta-cell function. The genetic and molecular basis for these reductions in insulin sensitivity and beta-cell function are not fully understood but it does seem that body-fat distribution and especially intra-abdominal fat are major determinants of insulin resistance while reductions in beta-cell mass contribute to beta-cell dysfunction. Based on our greater understanding of the relative roles of insulin resistance and beta-cell dysfunction in Type 2 diabetes, we can anticipate advances in the identification of genes contributing to the development of the disease as well as approaches to the treatment and prevention of Type 2 diabetes.
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Affiliation(s)
- S E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, Veterans Affairs Puget Sound Health Care System and University of Washington, Seattle, Washington, USA
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Bergman RN, Finegood DT, Kahn SE. The evolution of beta-cell dysfunction and insulin resistance in type 2 diabetes. Eur J Clin Invest 2002; 32 Suppl 3:35-45. [PMID: 12028373 DOI: 10.1046/j.1365-2362.32.s3.5.x] [Citation(s) in RCA: 228] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Insulin resistance and beta-cell dysfunction have important roles in the pathogenesis and evolution of type 2 diabetes. The development of precise methods to measure these factors has helped us to define the relationship between them and evidence is reviewed that changes in insulin sensitivity are compensated by inverse changes in beta-cell responsiveness such that the product of insulin sensitivity and insulin secretion (the disposition index) remains constant. While the disposition index promises to be a useful tool to predict individuals at high risk of developing type 2 diabetes, other factors that contribute to beta-cell dysfunction and mark disease onset and progression include impairments in proinsulin processing and insulin secretion, decreased beta-cell mass and islet amyloid deposition. Emerging data indicate that anti-diabetic agents, such as the thiazolidinediones that simultaneously target insulin resistance and beta-cell dysfunction, may have a beneficial impact on disease onset and progression. Several landmark clinical studies are underway to investigate if their initial promise is supported by data from large-scale trials.
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Affiliation(s)
- R N Bergman
- Diabetes Research Center, Keck School of Medicine, Department of Physiology and Biophysics, University of Southern California, Los Angeles, CA 90089, USA.
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41
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Bridget H‐H Hsu‐Hage, Xilin Yang. Gestational diabetes mellitus and its complications. Asia Pac J Clin Nutr 2002; 8:82-9. [DOI: 10.1046/j.1440-6047.1999.00072.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bridget H‐H Hsu‐Hage
- Department of Community Medicine and General Practice, Monash University, Melbourne, Australia,
| | - Xilin Yang
- Tianjin Institute of Food Safety Control and Inspection, Tianjin, China
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42
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Kahn SE. Clinical review 135: The importance of beta-cell failure in the development and progression of type 2 diabetes. J Clin Endocrinol Metab 2001; 86:4047-58. [PMID: 11549624 DOI: 10.1210/jcem.86.9.7713] [Citation(s) in RCA: 220] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- S E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington and Veterans Affairs Puget Sound Health Care System, Seattle, Washington 98108, USA.
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Kahn SE, Prigeon RL, Schwartz RS, Fujimoto WY, Knopp RH, Brunzell JD, Porte D. Obesity, body fat distribution, insulin sensitivity and Islet beta-cell function as explanations for metabolic diversity. J Nutr 2001; 131:354S-60S. [PMID: 11160560 DOI: 10.1093/jn/131.2.354s] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Studies of metabolic processes have been enhanced by our understanding of the relationships among obesity, body fat distribution, insulin sensitivity and islet beta-cell function. Thus, we have learned that although insulin resistance is usually associated with obesity, even lean subjects can be insulin resistant due to the accumulation of visceral fat. Insulin sensitivity and beta-cell function are also intimately linked. The hyperbolic relationship between these two parameters explains why insulin-resistant individuals have markedly enhanced insulin responses, whereas subjects who are insulin sensitive exhibit very low responses. Failure to take into account this relationship will lead to erroneous conclusions. By accounting for this important interaction, it has been clearly demonstrated that subjects at high risk of developing type 2 diabetes (older individuals, women with a history of gestational diabetes or polycystic ovary syndrome, subjects with impaired glucose tolerance and first-degree relatives of individuals with type 2 diabetes) have impaired beta-cell function. Furthermore, the progression from normal glucose tolerance to impaired glucose tolerance and type 2 diabetes is associated with declining insulin secretion.
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Affiliation(s)
- S E Kahn
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington and Department of Veterans Affairs, Puget Sound Health Care, Seattle, WA 98108, USA.
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Costa A, Carmona F, Martinez-Roman S, Quintó L, Levy I, Conget I. Post-partum reclassification of glucose tolerance in women previously diagnosed with gestational diabetes mellitus. Diabet Med 2000; 17:595-8. [PMID: 11073181 DOI: 10.1046/j.1464-5491.2000.00341.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS To re-evaluate post-partum screening; fasting plasma glucose (FPG) vs. oral glucose tolerance test (OGTT) in Caucasian women with previous gestational diabetes mellitus (GDM). METHODS Once breast-feeding had finished, an OGTT was performed in 120 women with previous GDM. They were classified according to World Health Organization (WHO) 1985 and American Diabetes Association (ADA) 1997 criteria. The kappa-statistic measure of agreement was used to compared both diagnostic categories. A receiver-operating characteristic (ROC) curve studied the FPG as a test to detect abnormal glucose tolerance. RESULTS Identical diabetes prevalence (2%) but quite different intermediate categories (12% impaired glucose tolerance vs. 3% impaired fasting glucose) were observed with both criteria. The kappa-statistic (scaled from 0 to 1) was 0.38 (fair agreement), P = 0.000. The ROC curve area of the FPG was 0.65. CONCLUSIONS FPG is an unsatisfactory method of evaluating the glucose tolerance of Caucasian women with previous GDM. OGTT may be a better test for such a purpose.
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Affiliation(s)
- A Costa
- Servei d'Endocrinologia i Diabetis, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, Facultat de Medicina, Universitat de Barcelona, Spain
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45
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Gerich JE. The genetic basis of type 2 diabetes mellitus: impaired insulin secretion versus impaired insulin sensitivity. Endocr Rev 1998; 19:491-503. [PMID: 9715377 DOI: 10.1210/edrv.19.4.0338] [Citation(s) in RCA: 196] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Despite the fact that it is the prevalent view that insulin resistance is the main genetic factor predisposing to development of type 2 diabetes, review of several lines of evidence in the literature indicates a lack of overwhelming support for this concept. In fact, the literature better supports the case of impaired insulin secretion being the initial and main genetic factor predisposing to type 2 diabetes, especially 1) the studies in people at high risk to subsequently develop type 2 diabetes (discordant monozygotic twins and women with previous gestational diabetes), 2) the studies demonstrating compete alleviation of insulin resistance with weight loss, and 3) the studies finding that people with type 2 diabetes or IGT can have impaired insulin secretion and no insulin resistance compared with well matched NGT subjects. The fact that insulin resistance may be largely an acquired problem in no way lessens its importance in the pathogenesis of type 2 diabetes. Life style changes (exercise, weight reduction) and pharmacological agents (e.g., biguanides and thiazolidendiones) that reduce insulin resistance or increase insulin sensitivity clearly have major beneficial effects (122, 144-146, 153-155).
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Affiliation(s)
- J E Gerich
- University of Rochester, School of Medicine and Dentistry, Department of Medicine, New York 14642, USA
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46
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Bowes SB, Hennessy TR, Umpleby AM, Benn JJ, Jackson NC, Boroujerdi MA, Sönksen PH, Lowy C. Measurement of glucose metabolism and insulin secretion during normal pregnancy and pregnancy complicated by gestational diabetes. Diabetologia 1996; 39:976-83. [PMID: 8858221 DOI: 10.1007/bf00403918] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Gestational diabetes affects 2-3% of pregnant women and is associated with foetal complications including macrosomia and an increased likelihood of developing diabetes in later life. We have therefore studied seven women with gestational diabetes and five control women both during the third trimester of pregnancy and again 2-3 months post-partum, using the minimal model analysis of the frequently sampled labelled ([6,6-2H2]-glucose) intravenous glucose tolerance test. Glucose tolerance (glucose Kd) was significantly reduced in the women with gestational diabetes compared with the normal pregnant women both in pregnancy (1.16 +/- 0.11 vs 1.78 +/- 0.23%/min; p < 0.05) and post-partum (1.47 +/- 0.22 vs 2.59 +/- 0.43%/min; p < 0.05) and increased significantly in the control women after delivery (p < 0.05). Glucose effectiveness was not significantly different between the women with gestational diabetes and the control group either during or after pregnancy. Insulin sensitivity was significantly lower during pregnancy than after delivery in the women with gestational diabetes (p < 0.05). There was no significant difference in basal insulin secretion in the two groups during pregnancy or post-partum. However, during pregnancy the control subjects significantly increased (p < 0.001) their insulin secretion over a period of 20 min in response to an intravenous glucose tolerance test (96.2 +/- 42.7 pmol/kg) compared with post-partum values (58.3 +/- 25.2 pmol/kg) while in the women with gestational diabetes insulin secretion was similar in pregnancy (65.5 +/- 9.3 pmol/kg) and after delivery (57.7 +/- 15.7 pmol/kg). These data suggest that the glucose intolerance in gestational diabetes compared to normal pregnancy is due to reduced insulin sensitivity and an impaired ability in gestational diabetes to increase insulin secretion in response to glucose.
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Affiliation(s)
- S B Bowes
- Division of Medicine, United Medical School, London, UK
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47
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Damm P, Vestergaard H, Kühl C, Pedersen O. Impaired insulin-stimulated nonoxidative glucose metabolism in glucose-tolerant women with previous gestational diabetes. Am J Obstet Gynecol 1996; 174:722-9. [PMID: 8623813 DOI: 10.1016/s0002-9378(96)70456-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Our purpose was to investigate insulin sensitivity and insulin secretion in women with previous gestational diabetes. STUDY DESIGN Twelve women with previous gestational diabetes and 11 controls were examined by oral and intravenous glucose tolerance tests and a hyperinsulinemic euglycemic clamp including indirect calorimetry. All women were lean and had normal oral glucose tolerance test results. Activities of glycogen synthase, phosphofructokinase, and hexokinase were measured in vastus lateralis muscle biopsy specimens obtained in the basal state and after insulin stimulation. RESULTS Women with previous gestational diabetes had a decreased glucose disposal rate (p<0.01) because of a reduced insulin-stimulated nonoxidative glucose metabolism (6.63 +/- 0.47 vs 9.04 +/- 0.57 mg/kg fat-free mass per minute, p<0.01). The muscle activities of glycogen synthase, phosphofructokinase, and hexokinase were similar in the two groups. The first-phase insulin response to the intravenous glucose tolerance test was, in absolute terms, comparable in the two groups. However, when the decreased insulin sensitivity was taken into account, women with previous gestational diabetes had a relative insulin secretion deficiency. CONCLUSION Women with previous gestational diabetes have a decreased insulin sensitivity and a relative impairment of insulin secretion.
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Affiliation(s)
- P Damm
- Diabetes Center, Department of Obstetrics and Gynaecology, Rigshospitalet, Copenhagen, Denmark
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48
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Peters RK, Kjos SL, Xiang A, Buchanan TA. Long-term diabetogenic effect of single pregnancy in women with previous gestational diabetes mellitus. Lancet 1996; 347:227-30. [PMID: 8551882 DOI: 10.1016/s0140-6736(96)90405-5] [Citation(s) in RCA: 171] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Pregnancy is associated with marked insulin resistance that seems to have little, if any, impact on the long-term risk of non-insulin-dependent diabetes mellitus (NIDDM) in the general population. The aim of this study was to test whether pregnancy would alter the risk of NIDDM among women with a high prevalence of pancreatic beta-cell dysfunction, as indicated by a history of gestational diabetes mellitus. METHODS The cohort consisted of 666 Latino women with gestational diabetes attending a high-risk family planning clinic. They were followed up for up to 7.5 years, during which time they were weighed and underwent an oral glucose-tolerance test annually. The effect of an additional pregnancy, and of other risk factors for diabetes, was examined. FINDINGS 87 (13%) of the women completed an additional pregnancy. 80 of those women did not have NIDDM immediately after the additional pregnancy and their subsequent annual incidence rate of NIDDM was 30.9% (95% CI 12.7-49.1), more than 2.5 times the annual incidence rate of NIDDM in the cohort overall (11.9%; 95% CI 10.0-13.8). Proportional hazards regression analysis using the presence or absence of an additional pregnancy as a time-dependent variable confirmed that an additional pregnancy increased the rate ratio of NIDDM to 3.34 (95% CI 1.80-6.19), compared with women without an additional pregnancy after adjustment for other potential diabetes risk factors during the index pregnancy (antepartum oral glucose tolerance, highest fasting glucose, gestational age at diagnosis of gestational diabetes) and during follow-up (postpartum body mass index [BMI], and glucose tolerance, weight change, breast feeding, and months of contraceptive use). Weight gain also was independently associated with an increased risk of NIDDM; the rate ratio was 1.95 (95% CI 1.63-2.33) for each 10 lb (4.5 kg) gained during follow-up after adjustment for the additional pregnancy and the other potential risk factors. INTERPRETATION The study showed that a single pregnancy, independent of the well-known effect of weight gain, accelerated the development of NIDDM in a group of women with a high prevalence of pancreatic beta-cell dysfunction. This finding implies that episodes of insulin resistance may contribute to the decline in beta-cell function that leads to NIDDM in many high-risk individuals.
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Affiliation(s)
- R K Peters
- Department of Preventive Medicine, School of Medicine, University of Southern California, Los Angeles, USA
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49
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Zhang S, Folsom AR, Flack JM, Liu K. Body fat distribution before pregnancy and gestational diabetes: findings from coronary artery risk development in young adults (CARDIA) study. BMJ (CLINICAL RESEARCH ED.) 1995; 311:1139-40. [PMID: 7580711 PMCID: PMC2551059 DOI: 10.1136/bmj.311.7013.1139] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- S Zhang
- Division of Epidemiology, School of Public Health, University of Minnesota, Minneapolis 55454-1015, USA
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50
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Alvarsson M, Wajngot A, Efendic S, Grill V. Relationship between insulin responses to D-glucose and to L-arginine in women with a history of gestational diabetes. Acta Diabetol 1995; 32:86-91. [PMID: 7579540 DOI: 10.1007/bf00569563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The relationship between insulin responses to glucose and to arginine was studied in non-obese women with previous gestational diabetes (PGD). One group, n = 10, had normal glucose tolerance (NGT) by WHO criteria and another, n = 8, had impaired glucose tolerance (IGT). A third group of women without PGD, n = 12, was also studied. A hyperglycaemic clamp (blood glucose level 11 mM) and an arginine stimulation test (150 mg/kg L-arginine followed by 10 mg/kg.min) were performed on separate days. The ratios of arginine to glucose responses 0-10 min differed: they were 1.00 for non-PGD, 1.29 for NGT and 1.46 for IGT (P < 0.02 vs non-PGD). A further difference between groups was the ratio between first- and second-phase glucose-induced insulin secretion, which was significantly decreased in IGT, 0.72, compared with NGT, 0.98 (P < 0.01), and non-PGD, 1.05 (P < 0.005). However, within each group insulin responses 0-10 min to glucose and arginine were strongly correlated: for NGT (r = 0.75, P < 0.05), for IGT (r = 0.85, P < 0.01) and for women without PGD (r = 0.69, P < 0.05). Insulin sensitivity, as assessed by the M/I ratio, was non-significantly decreased in IGT (0.18 +/- 0.03 mg/kg.min per mU/l vs 0.26 +/- 0.03 in NGT and 0.28 +/- 0.03 in non-PGD, P < 0.1).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M Alvarsson
- Department of Endocrinology, Karolinska Hospital, Stockholm, Sweden
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