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Type: Journal article
Title: Metabolic burden and disease and mortality risk associated with impaired fasting glucose in elderly adults
Author: Samaras, K.
Crawford, J.
Lutgers, H.
Campbell, L.
Baune, B.
Lux, O.
Brodaty, H.
Trollor, J.
Sachdev, P.
Citation: Journal of the American Geriatrics Society, 2015; 63(7):1435-1442
Publisher: Wiley.
Issue Date: 2015
ISSN: 0002-8614
Statement of
Katherine Samaras, John Crawford, Helen L. Lutgers, Lesley V. Campbell, Bernhard T. Baune, Ora Lux, Henry Brodaty, Julian N. Trollor and Perminder Sachdev
Abstract: OBJECTIVES: To examine whether impaired fasting glucose (IFG) represents an intermediary condition between normal fasting glucose and diabetes mellitus and, specifically, whether elderly adults with IFG have higher disease burden, cardiovascular risk, and systemic inflammation and higher 2-year mortality and incident disease. DESIGN: Prospective observational study. SETTING: Population-derived cohort. PARTICIPANTS: Individuals with a mean age of 78.6 ± 4.7 (N = 945). MEASUREMENTS: Disease was ascertained using a standardized questionnaire at baseline and 2 years. Fasting metabolic, inflammatory, and oxidative metabolism markers were measured. Disease prevalence, cardiovascular risk, and biochemical markers were compared to determine disease burden and metabolic disturbances in IFG. Adjusted odds ratios (ORs) for 2-year all-cause mortality and incident disease were determined. RESULTS: IFG prevalence was 41%. Individuals with IFG had higher baseline rates of heart disease than those with normal fasting glucose (NFG), similar to that in individuals with diabetes mellitus. IFG was characterized by higher inflammatory markers and oxidative metabolism end products and was an intermediary between NFG and diabetes mellitus for triglycerides and malondialdehyde. Discriminant analysis showed that IFG was independently associated with stroke and higher triglycerides and oxidative stress. Two-year all-cause mortality was 3.9%. The 2-year adjusted ORs for all-cause mortality, incident cardiac disease, stroke, and cancer were similar between IFG and NFG, using both American Diabetes Association and World Health Organization IFG criteria. IFG did not predict secondary cardiac events, stroke, or cancer. CONCLUSION: IFG was an intermediary condition for heart disease, inflammation, and oxidative stress in elderly adults but not for 2-year incident disease or all-cause mortality. Longer-term prospective studies are needed to clarify whether IFG in elderly adults portends greater morbidity and mortality
Keywords: Geriatric; diabetes mellitus; impaired fasting glucose; glucose; inflammation; cardiovascular disease; hypertension; cholesterol; cancer; obesity
Rights: © 2015, Copyright the Authors ; Journal compilation © 2015, The American Geriatrics Society
DOI: 10.1111/jgs.13482
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