Eur J Nutr. 2021 Nov 19; doi: 10.1007/s00394-021-02713-x. Epub 2021 Nov 19.
Ten-year changes in plasma L-carnitine levels and risk of coronary heart disease.
European journal of nutrition
Yoriko Heianza, Wenjie Ma, Joseph A DiDonato, Qi Sun, Eric B Rimm, Frank B Hu, Kathryn M Rexrode, JoAnn E Manson, Lu Qi
Affiliations
Affiliations
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street, Suite 1724, 70112, New Orleans, LA, USA.
- Clinical and Translational Epidemiology Unit and Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- Center for Microbiome and Human Health, Cleveland Clinic, Cleveland, OH, USA.
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
- Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Division of Women's Health, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street, Suite 1724, 70112, New Orleans, LA, USA. [email protected].
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA. [email protected].
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. [email protected].
PMID: 34799774
DOI: 10.1007/s00394-021-02713-x
Abstract
PURPOSE: L-Carnitine is abundant in animal source foods, particularly red meat, and circulating L-carnitine may be related to the incidence of coronary heart disease (CHD). We investigated whether long-term changes in plasma L-carnitine over 10 years were associated with the CHD incidence and also examined joint associations of carnitine-rich red meat consumption and L-carnitine changes on the subsequent risk of CHD.
METHODS: This prospective nested case-control study included 772 healthy women at baseline (386 incident CHD cases and 386 healthy controls). Plasma L-carnitine levels were measured both at the first (1989-90) and second blood collections (2000-02). Incident cases of CHD were prospectively followed from the date of the second blood collection through 2016.
RESULTS: Overall, a greater increase in L-carnitine from the first to the second time point was related to a higher risk of CHD, regardless of the initial L-carnitine levels (relative risk: 1.36 (95% CI 0.999, 1.84) per 1-SD increase). The 10-year changes in L-carnitine were positively associated with red meat consumption over time, and women with higher red meat intake (≥ 36 g/day) and with greater increases in L-carnitine had a 1.86 (95% CI 1.13, 3.09) times increased risk of CHD, as compared to those with lower red meat intake and lesser increases in L-carnitine.
CONCLUSION: Long-term increases in L-carnitine levels were associated with the subsequent incidence of CHD, especially among women with higher intake of red meat. Our results suggest the importance of atherogenic L-carnitine changes and dietary intakes over time in the prevention of CHD.
© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.
Keywords: Coronary heart disease; Diet; Gut microbiota-related metabolite; L-Carnitine; Risk; Trimethylamine N-oxide
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