PMID- 33951481 OWN - NLM STAT- MEDLINE DCOM- 20210706 LR - 20221207 IS - 1872-8227 (Electronic) IS - 0168-8227 (Linking) VI - 176 DP - 2021 Jun TI - Comparison of islet cell function, insulin sensitivity, and incretin axis between Asian-Indians with either impaired fasting glucose or impaired glucose tolerance, and normal healthy controls. PG - 108846 LID - S0168-8227(21)00205-9 [pii] LID - 10.1016/j.diabres.2021.108846 [doi] AB - AIMS: The objective of this study was to compare the islet cell function, insulin sensitivity, and incretin axis between Asian-Indian subjects with either impaired fasting glucose (IFG), or impaired glucose tolerance (IGT), and normal glucose tolerance (NGT). MATERIALS AND METHODS: Prediabetes subjects underwent a mixed meal tolerance test(MMTT) after overnight fasting. Samples for glucose, insulin, glucagon, and glucagon-like peptide-1 (GLP-1) were collected at 0, 30, 60, and 120 min. Insulin secretion sensitivity index -2 (ISSI-2) for beta-cell function and Matsuda index for insulin sensitivity were assessed. Alpha cell function was assessed by measuring the area under the curve (AUC) (0-120) glucagon/AUC(0-120) glucose. RESULTS: A total of sixty subjects were recruited with 20 in each group. The beta-cell function represented by ISSI-2 was impaired in prediabetes subjects as compared to NGT group (IFG: 2.09 +/- 0.44 vs. NGT: 3.04 +/- 0.80, P < 0.0001, and IGT: 2.33 +/- 0.59 vs. NGT: 3.04 +/- 0.80, P = 0.002). Similarly, AUC(0-120) glucagon/AUC(0-120) glucose was also lower in prediabetes group as compared to healthy controls (IFG: 0.41(0.54) vs. NGT: 1.07(0.39), P = 0.003 and IGT: 0.57(0.38) vs. NGT: 1.07(0.39), P = 0.001). CONCLUSION: Asian-Indian prediabetes subjects have reduced beta-cell function with lesser glucagon secretion during MMTT as compared to normal healthy controls. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Roy, Ayan AU - Roy A AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India; Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, Jodhpur, Rajasthan, 342005, India. FAU - Kamalanathan, Sadishkumar AU - Kamalanathan S AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Sahoo, Jayaprakash AU - Sahoo J AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. Electronic address: jppgi@yahoo.com. FAU - Kar, Sitanshu Sekhar AU - Kar SS AD - Department of Preventive and Social Medicine, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Naik, Dukhabandhu AU - Naik D AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Narayanan, Niya AU - Narayanan N AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Merugu, Chandhana AU - Merugu C AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. FAU - Patel, Deepika AU - Patel D AD - Department of Endocrinology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India. LA - eng PT - Comparative Study PT - Journal Article DEP - 20210502 PL - Ireland TA - Diabetes Res Clin Pract JT - Diabetes research and clinical practice JID - 8508335 RN - 0 (Blood Glucose) RN - 0 (Incretins) RN - 0 (Insulin) RN - 9007-92-5 (Glucagon) SB - IM MH - Adult MH - Aged MH - Asian People MH - Blood Glucose/metabolism MH - Case-Control Studies MH - Fasting/blood MH - Female MH - Glucagon/metabolism MH - Glucose Intolerance/ethnology/*metabolism/*physiopathology MH - Glucose Tolerance Test MH - Humans MH - Incretins/*metabolism MH - India/ethnology MH - Insulin/metabolism MH - Insulin Resistance/ethnology/*physiology MH - Insulin Secretion/physiology MH - Insulin-Secreting Cells/metabolism/*physiology MH - Male MH - Middle Aged MH - Prediabetic State/ethnology/metabolism/physiopathology MH - Signal Transduction/physiology OTO - NOTNLM OT - Alpha cell OT - Beta-cell OT - Glucagon OT - Glucagon-like peptide-1 OT - Insulin OT - Prediabetes COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/05/06 06:00 MHDA- 2021/07/07 06:00 CRDT- 2021/05/05 20:09 PHST- 2021/03/07 00:00 [received] PHST- 2021/04/24 00:00 [revised] PHST- 2021/04/28 00:00 [accepted] PHST- 2021/05/06 06:00 [pubmed] PHST- 2021/07/07 06:00 [medline] PHST- 2021/05/05 20:09 [entrez] AID - S0168-8227(21)00205-9 [pii] AID - 10.1016/j.diabres.2021.108846 [doi] PST - ppublish SO - Diabetes Res Clin Pract. 2021 Jun;176:108846. doi: 10.1016/j.diabres.2021.108846. Epub 2021 May 2.