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Total and high-molecular-weight adiponectin and risk of coronary heart disease and ischemic stroke in older adults.
Friday,2013-11-08 16:01 America/Los_Angeles — poolea2
| Title | Total and high-molecular-weight adiponectin and risk of coronary heart disease and ischemic stroke in older adults. |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Kizer, JR, Benkeser, D, Arnold, AM, Djoussé, L, Zieman, SJ, Mukamal, KJ, Tracy, RP, Mantzoros, CS, Siscovick, DS, Gottdiener, JS, Ix, JH |
| Journal | J Clin Endocrinol Metab |
| Volume | 98 |
| Issue | 1 |
| Pagination | 255-63 |
| Date Published | 2013 Jan |
| ISSN | 1945-7197 |
| Keywords | Adiponectin, Adult, Aged, Aged, 80 and over, Brain Ischemia, Cardiovascular Diseases, Case-Control Studies, Cohort Studies, Coronary Disease, Female, Humans, Male, Molecular Weight, Residence Characteristics, Risk Factors, Stroke |
| Abstract | <p><b>CONTEXT: </b>Adiponectin is atheroprotective in the laboratory, but prospective studies have shown opposite associations with cardiovascular disease (CVD) in healthy middle-aged populations (protective) and older cohorts (adverse). Whether this relates to different proportions of high-molecular-weight (HMW) adiponectin is unknown.</p><p><b>OBJECTIVE: </b>The aim of the study was to test the hypothesis that total adiponectin is directly associated, but HMW adiponectin is inversely related, with CVD in older adults.</p><p><b>DESIGN, SETTING, AND PARTICIPANTS: </b>We evaluated 3290 participants free of prevalent CVD in a longitudinal cohort study of U.S. adults aged 65 yr and older.</p><p><b>MAIN OUTCOME MEASURES: </b>We measured incident CVD (n = 1291), comprising coronary heart disease and ischemic stroke.</p><p><b>RESULTS: </b>Total and HMW adiponectin were tightly correlated (r = 0.94). Cubic splines adjusted for potential confounders revealed that the associations of total and HMW adiponectin with CVD were U-shaped, with inflection points of 20 and 10 mg/liter, respectively. After controlling for potential confounding, levels of total and HMW adiponectin below these cutpoints tended to be inversely associated with incident CVD, driven by their significant or near-significant relations with coronary heart disease [hazard ratio (HR), 0.85 per sd increase; 95% confidence interval (CI), 0.75-96; and HR, 0.87; 95% CI, 0.75-1.01, respectively]. These associations were abrogated by additional inclusion of putative metabolic intermediates. Above these cutpoints, however, both total and HMW adiponectin were significantly directly associated with CVD after adjustment for confounders and, particularly, mediators (HR, 1.20 per sd increase; 95% CI, 1.06-1.35; and HR, 1.12; 95% CI, 1.02-1.24, respectively).</p><p><b>CONCLUSION: </b>In community-living elders, total and HMW adiponectin showed similar U-shaped relationships with CVD. The inverse relation in the lower range, but not the direct association at the higher end, disappeared after inclusion of putative intermediates, suggesting that high levels may reflect adverse processes separate from adiponectin's beneficial glycometabolic properties.</p> |
| DOI | 10.1210/jc.2012-2103 |
| Alternate Journal | J. Clin. Endocrinol. Metab. |
| PubMed ID | 23162097 |
| PubMed Central ID | PMC3537098 |
| Grant List | N01-HC-85085 / HC / NHLBI NIH HHS / United States R01 AG015928 / AG / NIA NIH HHS / United States U01 HL080295 / HL / NHLBI NIH HHS / United States N01-HC-85081 / HC / NHLBI NIH HHS / United States N01 HC015103 / HC / NHLBI NIH HHS / United States R56 AG020098 / AG / NIA NIH HHS / United States R01 HL-094555 / HL / NHLBI NIH HHS / United States AG-20098 / AG / NIA NIH HHS / United States N01HC55222 / HL / NHLBI NIH HHS / United States R01 HL094555 / HL / NHLBI NIH HHS / United States N01-HC-85086 / HC / NHLBI NIH HHS / United States N01HC85086 / HL / NHLBI NIH HHS / United States AG-027058 / AG / NIA NIH HHS / United States N01-HC-85082 / HC / NHLBI NIH HHS / United States N01 HC-55222 / HC / NHLBI NIH HHS / United States HHSN268201200036C / HL / NHLBI NIH HHS / United States N01-HC-85083 / HC / NHLBI NIH HHS / United States N01-HC-75150 / HC / NHLBI NIH HHS / United States N01-HC-85080 / HC / NHLBI NIH HHS / United States R01 HL080295 / HL / NHLBI NIH HHS / United States R01 AG020098 / AG / NIA NIH HHS / United States N01HC75150 / HL / NHLBI NIH HHS / United States N01-HC-85079 / HC / NHLBI NIH HHS / United States HHSN268201200036C / / PHS HHS / United States HL080295 / HL / NHLBI NIH HHS / United States N01-HC-85239 / HC / NHLBI NIH HHS / United States AG-023629 / AG / NIA NIH HHS / United States N01HC85079 / HL / NHLBI NIH HHS / United States R01 AG023629 / AG / NIA NIH HHS / United States R01 AG027058 / AG / NIA NIH HHS / United States N01 HC045133 / HC / NHLBI NIH HHS / United States N01 HC035129 / HC / NHLBI NIH HHS / United States R56 AG023629 / AG / NIA NIH HHS / United States UL1 TR000457 / TR / NCATS NIH HHS / United States N01-HC-85084 / HC / NHLBI NIH HHS / United States |