Biomarkers of mineral and bone metabolism and 20-year risk of hospitalization with infection: The atherosclerosis risk in communities study

Junichi Ishigami, Bernard G. Jaar, Casey M. Rebholz, Morgan E. Grams, Erin D. Michos, Myles Wolf, Csaba P. Kovesdy, Shinichi Uchida, Josef Coresh, Pamela L. Lutsey, Kunihiro Matsushita

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Context: Mineral and bone disorders (MBDs) might be relevant in the etiology of infection. Objective: To determine whether MBD biomarkers were associated with the incidence of hospitalization with infection. We also assessed the cross-sectional association between MBD biomarker levels and kidney function. Design, Setting, Participants: Community-based cohort study of 11,218 participants with an estimated glomerular filtration rate (eGFR) $30 mL/min/1.73m2 in the Atherosclerosis Risk in Communities study. We assessed the cross-sectional associations of five MBD markersfibroblast growth factor 23 (FGF23), 25-hydroxyvitamin D [25(OH)D], parathyroid hormone (PTH), calcium corrected for hypoalbuminemia, and phosphoruswith eGFR from 1990 to 1992 and their longitudinal associations with incident hospitalization with infection in 1990 to 2013. Main Outcome: Incident hospitalization with infection. Results: In age-, sex-, and race-adjusted models, lower eGFRs were significantly associated with greater levels of FGF23, PTH, and corrected calcium but not 25(OH)D or phosphorus. During followup, 5078 hospitalizations with infection occurred. In fully adjusted Cox models, with the second quartile as the reference, the hazard ratio (HR) was significantly greater in the highest quartile of FGF23 [HR, 1.12; 95% confidence interval (CI), 1.03 to 1.21], PTH (HR, 1.09; 95% CI, 1.01 to 1.18), and corrected calcium (HR, 1.11; 95% CI, 1.03 to 1.20), and lowest quartile for 25(OH)D (HR, 1.11; 95% CI, 1.03 to 1.21). The association with phosphorus was significant only when the outcome was restricted to primary diagnosis of infection. These findings were consistent across subgroups of age, sex, race, and eGFR (,60 vs $60 mL/min/1.73 m2). Conclusions: MBD biomarkers were associated with eGFR and the subsequent risk of infection, supporting MBD involvement in the etiology of infection.

Original languageEnglish (US)
Pages (from-to)4648-4657
Number of pages10
JournalJournal of Clinical Endocrinology and Metabolism
Volume102
Issue number12
DOIs
StatePublished - 2017

Bibliographical note

Funding Information:
Financial Support: J.I. was supported by the National Heart, Lung, and Blood Institute (Grant T32HL007024). C.M.R. is supported by a Mentored Research Scientist Development Award from the National Institute of Diabetes and Digestive and Kidney Diseases (Grant K01 DK107782). The Atherosclerosis Risk in Communities Study is performed as a collaborative study supported by National Heart, Lung, and Blood Institute (Grants HHSN268201100005C, HHSN268201100006C, HHSN268201100007C, HHSN268201100008C, HHSN268201100009C, HHSN268201100010C, HHSN268201100011C, and HHSN268201100012C). This work was supported in part by the National Heart, Lung, and Blood Institute (Grant R01HL103706; principal investigator, P.L.L.). The sponsors had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; or the decision to submit the manuscript for publication. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Publisher Copyright:
Copyright © 2017 Endocrine Society.

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