Related Experiment Video
Updated: Jan 16, 2026
Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
Published on: October 12, 2017
Circulating oxylipins predict mortality in heart failure with preserved ejection fraction
Vaishnavi Aradhyula1, Sareeta Manandhar1, Alborz Sherafati1
1Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA.
Aims:
Heart failure with preserved ejection fraction (HFpEF) poses significant diagnostic, prognostic and therapeutic challenges, with high morbidity and mortality rates. Currently, there are limited predictors of outcomes in HFpEF patients. Circulating oxidized polyunsaturated fatty acyl lipids, or oxylipins, are known to initiate and resolve inflammation in cardiovascular diseases. However, their ability to predict mortality in HFpEF has not been established. We hypothesize that a panel of oxylipins can predict and stratify mortality risk in HFpEF patients.
Methods And Results:
Venous and arterial blood samples were collected during right heart catheterization from 90 HFpEF patients at a single institution. Patients were followed for 5 years to determine morbidity and mortality rates. We measured 143 arterial and 143 venous oxylipins in all study participants using liquid chromatography-mass spectrometry. Volcano plots were used to visualize differences in oxylipins between survived and deceased groups. Receiver operator characteristic (ROC) curves were used to determine optimal biomarker cut-points, and the relationship between the most significant oxylipins and mortality was assessed with Kaplan-Meier (KM) curves. HFpEF patients with 5-year mortality had increased age, decreased body mass index, decreased diastolic blood pressure and worse renal function at baseline. They also had more severe pulmonary hypertension (PH) and right heart dysfunction. Volcano plot analysis revealed that arterial oxylipin 15-keto prostaglandin F2a (PGF2a) was significantly associated with 5-year mortality. ROC curve analysis identified an optimal cut-point for 15-keto PGF2a, and participants with elevated arterial 15-keto PGF2a had significantly increased 5-year mortality on KM curves. Multivariable adjusted analysis identified 15-keto PGF2a as a significant predictor of 5-year mortality (OR 1.82; CI 1.03, 3.5).
Conclusions:
In this cohort of patients with HFpEF, arterial 15-keto PGF2a, a stable metabolite of PGF2a, significantly predicted 5-year mortality.
Related Concept Videos
01:25Blood Studies for Cardiovascular System III: Serum Lipid Profile
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
01:29Heart Failure II: Pathophysiology
01:24Peroxisomes
01:20Blood Studies for Cardiovascular System I: Cardiac Biomarkers
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
01:17Pathophysiology of Heart Failure
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...