Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA).
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2016
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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.
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Chatterjee, Ranee, Leila Zelnick, Kenneth J Mukamal, Jennifer A Nettleton, Bryan R Kestenbaum, David S Siscovick, Joachim H Ix, Russell Tracy, et al. (2016). Potassium Measures and Their Associations with Glucose and Diabetes Risk: The Multi-Ethnic Study of Atherosclerosis (MESA). PLoS One, 11(6). p. e0157252. 10.1371/journal.pone.0157252 Retrieved from https://hdl.handle.net/10161/12563.
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Scholars@Duke
Ranee Chatterjee
Laura Pat Svetkey
Laura P. Svetkey, MD MHS is Professor of Medicine/Nephrology, Vice Chair for Faculty Development and Diversity in the Department of Medicine. She is also the Director of Duke’s CTSA-sponsored internal career development award program (KL2) and the Associate Director of Duke’s REACH Equity Disparities Research Center, in which she also leads the Investigator Development Core.
Dr. Svetkey has over 30 years of experience in the investigation of hypertension, obesity, and related areas, conducting NIH-sponsored clinical research ranging from behavioral intervention trials to metabolomics and genetics, with a consistent focus on prevention, non-pharmacologic intervention, health disparities and minority health. Her research has affected national guidelines, having served on the 2013 national Hypertension Guideline Panel (JNC) and the Lifestyle Guideline Working Group. She is an American Society of Hypertension certified hypertension specialist, and a member of the Association of American Physicians (AAP). She is the Associate Director, Core Director and Project PI of Duke’s NIH-sponsored REACH Equity Disparities Research Center (PI: Kimberly Johnson).
As Department of Medicine Vice Chair for Faculty Development and Diversity, she implements a wide range of programs to enhance the experience and advancement of faculty and trainees, with particular emphasis on those from racial and ethnic groups under-represented in medicine, and women.
David Edward Edelman
My general interests are in the improve quality of care for chronic illness, using diabetes as a model. While I have performed research on screening for, diagnosis of, and clinical severity of unrecognized diabetes in patient care settings, my current line of work is in using health systems interventions to prevent cardiovascular disease, and to improve outcomes from comorbid diabetes and hypertension.
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