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  • Effects of family history of diabetes on pancreatic β-cell function and diabetic ketoacidosis in newly diagnosed patients with type 2 diabetes: a cross-sectional study in China

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Diabetes and endocrinology
Original research
Effects of family history of diabetes on pancreatic β-cell function and diabetic ketoacidosis in newly diagnosed patients with type 2 diabetes: a cross-sectional study in China
  1. Xiaofen Xiong,
  2. Ling Wei,
  3. Ying Xiao,
  4. Yachun Han,
  5. Jinfei Yang,
  6. Hao Zhao,
  7. Ming Yang,
  8. Lin Sun
  1. Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China
  1. Correspondence to Dr Lin Sun; sunlin{at}csu.edu.cn

Abstract

Objective To investigate the association between a parental and/or sibling history of diabetes and clinical characteristics.

Design A cross-sectional study.

Setting The data were collected from the endocrinology department of The Second Xiangya Hospital of Central South University from June 2017 to October 2019.

Participants A total of 894 newly diagnosed patients with type 2 diabetes were recruited. Data on clinical characteristics were collected from patient medical records. Pancreatic β-cell function and insulin resistance were calculated with the homeostatic model assessment. SPSS V.25.0 was used to perform the analysis.

Results The percentages of patients with parental and sibling histories of diabetes were 14.8% and 9.8%, respectively. The prevalence of diabetic ketoacidosis (DKA) was 3.9%. Compared with those with no parental history of diabetes, patients with a parental history of diabetes were characterised by early-onset disease (41.70±10.88 vs 51.17±14.09 years), poor glycaemic control of fasting blood glucose (10.84±5.21 vs 8.91±4.38 mmol/L) and a high prevalence of DKA (7.6% vs 3.3%). The patients with a sibling history of diabetes had later disease onset (56.05±9.86 vs 49.09±14.29 years) and lower BMI (24.49±3.48 vs 25.69±3.86 kg/m2) than those with no sibling history of diabetes. Univariate regression suggested that both parental history (p=0.037) and sibling history (p=0.011) of diabetes were associated with β-cell function; however, multiple regression analysis showed that only a sibling history of diabetes was associated with β-cell function (p=0.038). Univariate regression revealed a positive correlation between parental history of diabetes (p=0.023, OR=2.416, 95% CI 1.132 to 5.156) and DKA. Unfortunately, this correlation was not statistically significant for either patients with a parental history (p=0.234, OR=1.646, 95% CI 0.724 to 3.743) or those with a sibling history (p=0.104, OR=2.319, 95% CI 0.841 to 6.389) after adjustments for confounders.

Conclusion A sibling history of diabetes was associated with poor β-cell function, and a parental history of diabetes was associated with poor glycaemic control and a high prevalence of DKA.

  • diabetes & endocrinology
  • general diabetes
  • diabetes & endocrinology
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/bmjopen-2020-041072

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    Footnotes

    • Contributors The data were collected by XX, LW and YX, and the manuscript was written by XX, LW, YX, YH, JY, HZ and MY. LS was responsible for data integrity and accuracy.

    • Funding This study was assisted by the National Key R&D Program of China (2018YFC1314002 and 2016YFC1305501) and the National Natural Science Foundation of China (81730018).

    • Competing interests None declared.

    • Patient consent for publication Not required.

    • Ethics approval This study was approved by the human research ethics committees of The Second Xiangya Hospital of Central South University, China. All participants in this study provided informed consent prior to their inclusion in the study.

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

    • Data availability statement Data are available upon reasonable request. Data used in this study can be obtained from the corresponding author.

    • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.