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Genetics/Genomes/Proteomics/Metabolomics
Decreased arterial distensibility and postmeal hyperinsulinemia in young Japanese women with family history of diabetes
  1. Mika Takeuchi1,
  2. Bin Wu2,3,
  3. Mari Honda2,4,
  4. Ayaka Tsuboi1,5,
  5. Kaori Kitaoka1,6,
  6. Satomi Minato1,7,
  7. Miki Kurata1,8,
  8. Tsutomu Kazumi1,2,9,
  9. Keisuke Fukuo1,2,8
  1. 1Research Institute for Nutrition Sciences, Mukogawa Women’s University, Nishinomiya, Japan
  2. 2Open Research Center for Studying of Lifestyle-Related Diseases, Mukogawa Women’s University, Nishinomiya, Japan
  3. 3Department of Endocrinology, First Affiliated Hospital of Kunming Medical University, Kunming, China
  4. 4Department of Health, Sports, and Nutrition, Faculty of Health and Welfare, Kobe Women’s University, Kobe, Japan
  5. 5Department of Nutrition, Osaka City Juso Hospital, Osaka, Japan
  6. 6Department of Public Health, Shiga University of Medical Science, Otsu, Japan
  7. 7Graduate School of Human Science and Environment, University of Hyogo, Himeji, Japan
  8. 8Department of Food Sciences and Nutrition, Mukogawa Women’s University, Nishinomiya, Japan
  9. 9Department of Medicine, Kohnan Kakogawa Hospital, Kakogawa, Japan
  1. Correspondence to Dr Tsutomu Kazumi; kazumi{at}mukogawa-u.ac.jp

Abstract

Introduction To assess vascular function and characterize insulin secretion using a physiological approach in Japanese women with family history of type 2 diabetes (FHD).

Research design and methods Standardized mixed-meal tests were performed with multiple postprandial glucose, insulin and free fatty acids (FFA) measurements over a 30–120 min period in 31 Japanese women aged 21–24 years. Arterial distensibility was assessed as well.

Results Fasting glucose, triglyceride and insulin averaged <90 mg/dL, <60 mg/dL and <5 μU/mL, respectively, and did not differ cross-sectionally between 10 with (FHD+) and 21 without FHD (FHD–). FHD+ showed higher insulin responses not only during the first 30 min (p=0.005) but also during the second hour (60–120 min, p<0,05) in spite of identical postprandial suppression of FFA and identical fasting and postprandial glucose and FFA concentrations, except for higher 60 min FFA in FHD+. Further, FHD+ had decreased arterial distensibility (p=0.003). On multivariate regression analysis, arterial distensibility emerged as the only significant independent predictor of FHD+. Endurance training in FHD+ did not alter decreased arterial distensibility whereas it abolished postprandial hyperinsulinemia.

Conclusions FHD was associated with decreased arterial distensibility and postprandial hyperinsulinemia despite nearly identical postprandial glycemia and postprandial FFA suppression, suggesting that impaired vascular insulin sensitivity may precede glucose and lipid dysmetabolism in normal weight Japanese women aged 22 years.

  • family diabetes
  • vascular function
http://creativecommons.org/licenses/by-nc/4.0/

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

https://doi.org/10.1136/bmjdrc-2020-001244

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    Footnotes

    • Contributors MT, BW, MH, AT, KK, SM and MK have made substantial contributions to acquisition, analysis and interpretation of data. KF has been involved in drafting the manuscript. TK has been involved in revising it critically for important intellectual content; has given final approval of the version to be published; and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Competing interests None declared.

    • Patient consent for publication Not required.

    • Ethics approval The study was approved by the Ethics Committees of the University (No. 07-28) to be in accordance with the Helsinki declaration.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Data availability statement All data relevant to the study are included in the article or uploaded as supplementary information. The Ethics Committee of Mukogawa Women’s University does not allow us to open data except for a manuscript.