Myeloperoxidase, carnitine, and derivatives of reactive oxidative metabolites in heart failure with preserved versus reduced ejection fraction: A meta-analysis

source extracted confidence: high 2026-04-09
#humans #heart-failure #carnitine #stroke-volume #biomarkers

Myeloperoxidase, carnitine, and derivatives of reactive oxidative metabolites in heart failure with preserved versus reduced ejection fraction: A meta-analysis

Wong et al., 2024 | Int J Cardiol | Meta Analysis

Citation

Wong Chenille N, Gui Xi Yao, Rabkin Simon W. Myeloperoxidase, carnitine, and derivatives of reactive oxidative metabolites in heart failure with preserved versus reduced ejection fraction: A meta-analysis. Int J Cardiol. 2024-Mar-15;399:131657. doi:10.1016/j.ijcard.2023.131657

Abstract

BACKGROUND: Understanding the pathophysiology of heart failure (HF) with preserved ejection fraction (HFpEF) continues to be challenging. Several inflammatory and metabolic biomarkers have recently been suggested to be involved in HFpEF. OBJECTIVES: The purpose of this review was to synthesize the evidence on non-traditional biomarkers from metabolomic studies that may distinguish HFpEF from heart failure with reduced ejection fraction (HFrEF) and controls without HF. METHODS: A systematic search was conducted using Medline and PubMed with search terms such as "HFpEF" and "metabolomics", and a meta-analysis was conducted. RESULTS: Myeloperoxidase (MPO) levels were significantly (p < 0.001) higher in HFpEF than controls without HF, but comparable (p = 0.838) between HFpEF and HFrEF. Carnitine levels were significantly (p < 0.0001) higher in HFrEF than HFpEF, but comparable (p = 0.443) between HFpEF and controls without HF. Derivatives of reactive oxidative metabolites (DROMs) were not significantly (p = 0.575) higher in HFpEF than controls without HF. CONCLUSION: These data suggest that MPO is operative in HFpEF and HFrEF and may be a biomarker for HF. Furthermore, circulating carnitine levels may distinguish HFrEF from HFpEF.

Key Findings

Myeloperoxidase (MPO) levels were significantly (p < 0.001) higher in HFpEF than controls without HF, but comparable (p = 0.838) between HFpEF and HFrEF. Carnitine levels were significantly (p < 0.0001) higher in HFrEF than HFpEF, but comparable (p = 0.443) between HFpEF and controls without HF. Derivatives of reactive oxidative metabolites (DROMs) were not significantly (p = 0.575) higher in HFpEF than controls without HF.

Outcomes Measured

  • inflammatory markers

Population

Field Value
Population See abstract
Sample Size See abstract
Age Range See abstract
Condition See abstract

MeSH Terms

  • Humans
  • Heart Failure
  • Carnitine
  • Stroke Volume
  • Biomarkers
  • Peroxidase
  • Oxidative Stress
  • Prognosis

Evidence Classification

  • Level: Meta Analysis
  • Publication Types: Review, Meta-Analysis, Journal Article
  • Vertical: carnitine-cardiovascular

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09