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Low circulating coenzyme Q10 during acute phase is associated with inflammation, malnutrition, and in-hospital mortality in patients admitted to the coronary care unit

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Abstract

Coenzyme Q10 (CoQ10) has a potential role in the prevention and treatment of heart failure through improved cellular bioenergetics. In addition, it has antioxidant, free radical scavenging, and vasodilatory effects that may be beneficial. Although critical illness in intensive care unit is associated with decreased circulating CoQ10 levels, the clinical significance of CoQ10 levels during acute phase in the patients of cardiovascular disease remains unclear. We enrolled 257 consecutive cardiovascular patients admitted to the coronary care unit (CCU). Serum CoQ10 levels were measured after an overnight fast within 24 h of admission. We examined the comparison of serum CoQ10 levels between survivors and in-hospital mortalities in patients with cardiovascular disease. Serum CoQ10 levels during the acute phase in patients admitted to the CCU had similar independent of the diagnosis. CoQ10 levels were significantly lower in patients with in-hospital mortalities than in survivors (0.43 ± 0.19 vs. 0.55 ± 0.35 mg/L, P = 0.04). In patients admitted to the CCU, CoQ10 levels were negatively associated with age and C-reactive protein levels, and positively associated with body mass index, total cholesterol, and high-density lipoprotein cholesterol levels. Low CoQ10 levels correlated with low diastolic blood pressure. Multivariate logistic regression analysis demonstrated that low CoQ10 levels were an independent predictor of in-hospital mortality. Low serum CoQ10 levels during acute phase are significantly associated with cardiovascular risk and in-hospital mortality in patients admitted to the CCU.

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Acknowledgements

The authors would like to thank Ms. Ayako Onodera for their assistance with the clinical research aspects of this study.

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Authors and Affiliations

  1. Department of Cardiovascular Medicine, Juntendo University School of Medicine, 2-1-1Hongo Bunkyo-ku, Tokyo, 113-8421, Japan

    Megumi Shimizu, Tetsuro Miyazaki, Atsutoshi Takagi, Yurina Sugita, Shoichiro Yatsu, Azusa Murata, Takao Kato, Shoko Suda, Shohei Ouchi, Tatsuro Aikawa, Masaru Hiki, Shuhei Takahashi, Makoto Hiki, Hidemori Hayashi, Takatoshi Kasai, Kazunori Shimada, Katsumi Miyauchi & Hiroyuki Daida

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  1. Megumi Shimizu
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  2. Tetsuro Miyazaki
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Corresponding author

Correspondence to Tetsuro Miyazaki.

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Conflict of interest

This research study was not funded by any grant from any funding agency in the public, commercial, or not-for-profit sectors. Dr. Daida received consulting fee from KANEKA CORPORATION. Dr. Kasai received unrestricted research funding from Philips Respironics, Teijin Home Healthcare, and Fukuda Denshi. The remaining authors report no conflicts.

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Shimizu, M., Miyazaki, T., Takagi, A. et al. Low circulating coenzyme Q10 during acute phase is associated with inflammation, malnutrition, and in-hospital mortality in patients admitted to the coronary care unit. Heart Vessels 32, 668–673 (2017). https://doi.org/10.1007/s00380-016-0923-x

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  • DOI: https://doi.org/10.1007/s00380-016-0923-x

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