Effect of Heart Failure With Preserved Ejection Fraction on Nitric Oxide Metabolites

Payman Zamani, Benjamin French, Jeffrey A. Brandimarto, Paschalis Thomas Doulias, Ali Javaheri, Julio A. Chirinos, Kenneth B. Margulies, Raymond R. Townsend, Nancy K. Sweitzer, James C. Fang, Harry Ischiropoulos, Thomas P. Cappola

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Endothelial function may be deranged in heart failure with preserved ejection fraction (HFpEF). Serum NO-derived metabolites (NOm) might provide a biochemical surrogate of endothelial function in patients with heart failure (HF). We measured serum NOm in 415 participants in the Penn HF Study. Participants with HFpEF (n = 82) and those whose EF had recovered (Recovered-HF, n = 125) were matched 1:1 to heart failure with reduced ejection fraction (HFrEF) participants based on age, gender, race, tobacco use, and eGFR. Serum NOm levels were quantified after chemical reduction coupled with gas-phase chemiluminescence detection. After adjustment for matching covariates and BMI, HFpEF (34.5 μM; interquartile range [IQR] 25.0, 51.5) participants had lower NOm levels than HFrEF (41.0 μM; IQR 28.3, 58.0; ratio of HFpEF:HFrEF 0.82, 95% confidence interval [CI] 0.67 to 0.99; p = 0.04), which further decreased when adjusted for covariates that affect endothelial function (ratio 0.79, 95% CI 0.65 to 0.98; p = 0.03). There were no differences between HFrEF (34.0; IQR 25.3, 49.0) and matched Recovered-HF (36.0 μM; IQR 25.0, 55.0) or HFpEF and Recovered-HF. Age (+21%/10-year increase, p <0.001) and black race (−28%, p = 0.03) associated with NOm in HFpEF, whereas age (+11%/10-year increase, p = 0.03), current tobacco use (+67%, p = 0.01), and eGFR (p = 0.01) associated with NOm in Recovered-HF. In conclusion, HFpEF participants have reduced NOm compared with HFrEF in this matched cohort. This might suggest either compromised endothelial function or poor dietary intake. Black race was associated with lower NOm in HFpEF.

Original languageEnglish (US)
Pages (from-to)1855-1860
Number of pages6
JournalAmerican Journal of Cardiology
Volume118
Issue number12
DOIs
StatePublished - Dec 15 2016

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Zamani, P., French, B., Brandimarto, J. A., Doulias, P. T., Javaheri, A., Chirinos, J. A., Margulies, K. B., Townsend, R. R., Sweitzer, N. K., Fang, J. C., Ischiropoulos, H., & Cappola, T. P. (2016). Effect of Heart Failure With Preserved Ejection Fraction on Nitric Oxide Metabolites. American Journal of Cardiology, 118(12), 1855-1860. https://doi.org/10.1016/j.amjcard.2016.08.077