Abstract
Aim
To assess the association of telomere length (TL) with prediabetes/diabetes and to explore the potential factors affecting TL among individuals with prediabetes/diabetes by weight status.
Methods
This study included 3,379 eligible adults (aged 45–85 years, males: 42%) from the US Health and Retirement Study in 2008. TL was assayed using quantitative PCR of saliva (T/S ratio). Linear and nonlinear associations between TL and prediabetes/diabetes were assessed using the logistic regression and restricted cubic spline model, respectively, adjusting for TL-plate numbers, age, sex, race, body mass index, lifestyles, diabetes medications, and cardiometabolic parameters (blood pressure, C-reactive protein, and total cholesterol). Multiple linear regression was used for testing any factors associated with TL.
Results
Among 3,379 participants, 868 (25.7%) had prediabetes with a mean TL of 1.34 ± 0.37 (T/S ratio) and 858 (25.4%) had diabetes with a mean TL of 1.36 ± 0.43 (T/S ratio). Neither linear nor nonlinear association of TL with prediabetes/diabetes was significant by weight status. Age was negatively associated with TL in both normal-weight (β = − 0.002, p = 0.025) and overweight/obese (β = − 0.002, p = 0.006) prediabetes, but non-significant in normal-weight and overweight/obese diabetes. BMI and cardiometabolic parameters were not associated with TL in prediabetes/diabetes by weight status.
Conclusions
Salivary TL was not associated with prediabetes/diabetes among the US middle-aged and older adults. Further longitudinal studies are required to establish the link between TL and diabetes development and to identify potential factors affecting TL shortening, particularly in normal-weight diabetic patients.
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Acknowledgements
We thank the University of Michigan for providing the HRS data. The HRS data were sponsored by the National Institute on Aging (Grant Number: U01AG009740) and conducted by the University of Michigan.
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YHJ and HM conceptualized and designed the study. YHJ extracted and checked the data, performed the analyses, visualized the results, and drafted the manuscript. All authors revised the manuscript critically and approved the version to be submitted. HM and YHJ are the guarantors of this work and, as such, had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
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The HRS was supported by a cooperative agreement (Grant U01AG09740) between the National Institute on Aging and the University of Michigan.
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The informed consent for enrollment and Medicare link was obtained from participants before they enrolled in the study.
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Yu, Hj., Ho, M., Chau, P.H. et al. Salivary telomere length and the risks of prediabetes and diabetes among middle-aged and older adults: findings from the Health and Retirement Study. Acta Diabetol 60, 273–283 (2023). https://doi.org/10.1007/s00592-022-02004-9
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DOI: https://doi.org/10.1007/s00592-022-02004-9