PMID- 25231898 OWN - NLM STAT- MEDLINE DCOM- 20150616 LR - 20220321 IS - 1935-5548 (Electronic) IS - 0149-5992 (Linking) VI - 37 IP - 12 DP - 2014 Dec TI - Each degree of glucose intolerance in pregnancy predicts distinct trajectories of beta-cell function, insulin sensitivity, and glycemia in the first 3 years postpartum. PG - 3262-9 LID - 10.2337/dc14-1529 [doi] AB - 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 beta-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 beta-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 beta-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 beta-cell function, insulin sensitivity, and glycemia in the first 3 years postpartum that drive their differential risk of future T2DM. CI - (c) 2014 by the American Diabetes Association. Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. FAU - Kramer, Caroline K AU - Kramer CK AD - Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada Division of Endocrinology, University of Toronto, Toronto, Ontario, Canada. FAU - Swaminathan, Balakumar AU - Swaminathan B AD - Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, Ontario, Canada. FAU - Hanley, Anthony J AU - Hanley AJ AD - 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. FAU - Connelly, Philip W AU - Connelly PW AD - 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. FAU - Sermer, Mathew AU - Sermer M AD - Division of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario, Canada. FAU - Zinman, Bernard AU - Zinman B AD - 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. FAU - Retnakaran, Ravi AU - Retnakaran R AD - 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 rretnakaran@mtsinai.on.ca. LA - eng GR - 84206/Canadian Institutes of Health Research/Canada GR - MOP-67063/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140917 PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Blood Glucose) SB - IM MH - Adult MH - Blood Glucose/*metabolism MH - Diabetes Mellitus, Type 2/blood/*diagnosis/epidemiology/physiopathology MH - Diabetes, Gestational/diagnosis/epidemiology/*metabolism/*physiopathology MH - Disease Progression MH - Female MH - Follow-Up Studies MH - *Glucose Intolerance/classification/diagnosis/epidemiology MH - Glucose Tolerance Test MH - Humans MH - *Insulin Resistance MH - Insulin-Secreting Cells/*physiology MH - *Postpartum Period/blood/physiology MH - Pregnancy MH - Prognosis EDAT- 2014/09/19 06:00 MHDA- 2015/06/17 06:00 CRDT- 2014/09/19 06:00 PHST- 2014/09/19 06:00 [entrez] PHST- 2014/09/19 06:00 [pubmed] PHST- 2015/06/17 06:00 [medline] AID - dc14-1529 [pii] AID - 10.2337/dc14-1529 [doi] PST - ppublish SO - Diabetes Care. 2014 Dec;37(12):3262-9. doi: 10.2337/dc14-1529. Epub 2014 Sep 17.