Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA)

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Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA)

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Title: Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA)
Author: Chatterjee, Ranee; Zelnick, Leila; Mukamal, Kenneth J.; Nettleton, Jennifer A.; Kestenbaum, Bryan R.; Siscovick, David S.; Ix, Joachim H.; Tracy, Russell; Hoofnagle, Andrew N.; Svetkey, Laura P.; Edelman, David; de Boer, Ian H.

Note: Order does not necessarily reflect citation order of authors.

Citation: Chatterjee, R., L. Zelnick, K. J. Mukamal, J. A. Nettleton, B. R. Kestenbaum, D. S. Siscovick, J. H. Ix, et al. 2016. “Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA).” PLoS ONE 11 (6): e0157252. doi:10.1371/journal.pone.0157252. http://dx.doi.org/10.1371/journal.pone.0157252.
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Abstract: Background: Recent studies have found low-normal potassium (K) to be associated with increased diabetes risk. We sought to verify these associations in a multi-ethnic US cohort; and to determine if these associations extend to US Hispanics and Asian-Americans. Methods: We analyzed data from Multi-Ethnic Study of Atherosclerosis (MESA) participants who were free-of-diabetes at baseline. We examined cross-sectional associations between measures of K—serum, dietary, and urine—with fasting glucose and HOMA-IR. We examined longitudinal associations between K and diabetes risk over 8 years. Findings: In multivariable models, compared to those with higher serum K (≥4.5mmol/L), those with lower serum K (<4.0mmol/L) had significantly higher fasting glucose [1.3 mg/dL (95%CI 0.2, 2.4), P-value = 0.03]. Incident diabetes developed in 1281 of 5415 at-risk participants. In minimally-adjusted models, we found inverse associations between serum and dietary K and diabetes risk. Compared to those with higher serum K, those with lower serum K had an HR (95% CI) of incident diabetes of 1.23 (1.04, 1.47), P-value = 0.02. However, these associations were attenuated in fully-adjusted models. We found no significant interaction between potassium and ethnicity. Conclusions: In this multi-ethnic cohort, we found a significant inverse association between serum K and fasting glucose but no significant association with longer-term diabetes risk. This inverse association between potassium and glucose must be studied further to understand the physiology and its potential impact on chronic health.
Published Version: doi:10.1371/journal.pone.0157252
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4900670/pdf/
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Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27662284
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