Cardiac-Metabolic Coupling Revealed by Lipid and Energy Metabolomics Determines 80 km Endurance Performance in Yili Horses.
Abstract: This study aimed to investigate the regulatory mechanisms underlying the relationship between cardiac structure and function and plasma metabolic characteristics in Yili horses participating in an 80-km endurance, by integrating echocardiography, lipidomics, and energy metabolomics analyses. Twenty four competing Yili horses were selected and divided based on competition outcomes: Pre-Completion Group: PCG ( = 6); Post-Completion Group: PoCG ( = 6); Overtime Completion Group: OCG ( = 6); and Non-Completion Group: NCG ( = 6). Cardiac structural and functional parameters were assessed via echocardiography, and intergroup differences were analyzed using one-way ANOVA with a significance threshold of < 0.05. Plasma lipids and energy metabolites were quantified using UPLC-MS/MS, applying screening criteria of variable importance in projection (VIP) > 1, < 0.05, and fold change (FC) > 1.2 or FC < 0.833. Bioinformatics analyses were subsequently conducted to identify intergroup variations and correlations. Specifically, associations between cardiac structure/function and metabolites were examined using Pearson correlation analysis, with screening criteria of < 0.05 and correlation coefficient > 0.8. The results revealed the following: (1) Regarding cardiac structure and function, the PCG group exhibited significantly superior indices, including End-diastolic left ventricular diameter (LVIDd), End-diastolic left ventricular volume (EDV), stroke volume (SV), and ejection fraction (EF), compared with OCG and NCG, and LVIDd showed a highly significant negative correlation with competition completion time. (2) In metabolomic analyses, few differential metabolites were found among groups before the competition (only 60 between PCG and NCG), whereas 234 differential lipids were detected between PoCG and PCG, mainly enriched in sphingolipid metabolism and fatty acid degradation pathways. Energy metabolites showed distinct exercise-responsive patterns, with 22 differential metabolites between PCG and NCG and 21 between PoCG and PCG, significantly enriched in amino sugar and nucleotide sugar metabolism and TCA pathways. Dynamic changes in key TCA intermediates, such as citrate and succinate, reflected enhanced aerobic oxidative metabolism during endurance exercise. (3) Carnitine C18:1, Carnitine C10:2, FFA (20:3), Cer (t17:2/23:0) and 3-phenyllactic acid were significantly correlated with cardiac indicators such as LVLD and LVFWs ( < 0.05). In summary, performance in the 80-km endurance of Yili horses was primarily influenced by enlarged LVIDd and EDV, as well as the regulation of sphingolipid-fatty acid metabolic pathways. Triglycerides, specific acyl compounds, and ceramides may serve as potential biomarkers for evaluating endurance performance, providing a theoretical basis for scientific training and breeding of endurance horses.
Publication Date: 2025-11-12 PubMed ID: 41300371PubMed Central: PMC12650485DOI: 10.3390/biology14111581Google Scholar: Lookup
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Summary
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Objective Overview
- This research investigates how the heart’s structure and function relate to plasma metabolic profiles in Yili horses running an 80-km endurance race by combining echocardiography with detailed lipid and energy metabolite analysis.
Research Purpose and Design
- The study aims to understand the regulatory mechanisms linking cardiac characteristics with plasma metabolites to determine factors influencing endurance performance in Yili horses.
- Twenty-four Yili horses competing in an 80-km endurance race were divided into four groups by their race completion outcomes:
- Pre-Completion Group (PCG) – horses before race completion (n=6)
- Post-Completion Group (PoCG) – horses after race completion (n=6)
- Overtime Completion Group (OCG) – horses completing overtime (n=6)
- Non-Completion Group (NCG) – horses that did not complete the race (n=6)
Methodology
- Cardiac Assessment: Echocardiography was used to measure cardiac structural and functional parameters such as:
- End-diastolic left ventricular diameter (LVIDd)
- End-diastolic left ventricular volume (EDV)
- Stroke volume (SV)
- Ejection fraction (EF)
- Metabolomic Analyses:
- Plasma lipids and energy metabolites were quantified using UPLC-MS/MS.
- Significant differences were screened using criteria including variable importance in projection (VIP) >1, p-value < 0.05, and fold change thresholds.
- Bioinformatics tools were employed to analyze group differences and to perform correlation analyses between cardiac parameters and metabolites using Pearson correlation (p < 0.05 and correlation coefficient > 0.8).
Key Findings – Cardiac Structure and Function
- The PCG group exhibited significantly better cardiac performance indicators than the OCG and NCG groups, specifically:
- Greater end-diastolic left ventricular diameter (LVIDd)
- Larger end-diastolic left ventricular volume (EDV)
- Higher stroke volume (SV)
- Improved ejection fraction (EF)
- LVIDd was strongly negatively correlated with the time to complete the race, suggesting larger LVIDd predicts faster endurance performance.
Key Findings – Metabolomic Profiles
- Before the competition, few differences in metabolites were found between groups (only 60 differential metabolites between PCG and NCG).
- After competition (PoCG vs PCG), 234 differential lipids were detected, mainly implicating:
- Sphingolipid metabolism
- Fatty acid degradation pathways
- Energy metabolites showed distinct patterns in response to exercise with notable differences:
- 22 metabolites differing between PCG and NCG
- 21 metabolites differing between PoCG and PCG
These changes were enriched in pathways related to:
- Amino sugar and nucleotide sugar metabolism
- Tricarboxylic acid cycle (TCA) pathways
- Dynamic variations in TCA intermediates like citrate and succinate indicate enhanced aerobic oxidative metabolism during endurance exercise.
Metabolite and Cardiac Correlations
- Certain metabolites were significantly correlated with cardiac structural indicators:
- Carnitine C18:1 and Carnitine C10:2
- Free fatty acid (FFA) 20:3
- Ceramide (Cer t17:2/23:0)
- 3-phenyllactic acid
- These metabolites showed strong associations with left ventricular diameter and wall thickness, highlighting their potential role in cardiac-metabolic coupling and endurance capacity.
Conclusions and Implications
- Endurance performance in Yili horses is mainly influenced by:
- Cardiac adaptations, specifically enlarged LVIDd and EDV
- Regulation of sphingolipid and fatty acid metabolic pathways
- Specific lipids such as triglycerides, acylcarnitines, and ceramides may serve as biomarkers for evaluating endurance capacity in horses.
- The findings provide a theoretical basis for:
- Developing scientific training methods tailored to cardiac and metabolic profiles
- Informing selective breeding programs focused on improving endurance traits in horses
Cite This Article
APA
Wang T, Huang J, Ren W, Meng J, Yao X, Chu H, Yao R, Zhai M, Zeng Y.
(2025).
Cardiac-Metabolic Coupling Revealed by Lipid and Energy Metabolomics Determines 80 km Endurance Performance in Yili Horses.
Biology (Basel), 14(11), 1581.
https://doi.org/10.3390/biology14111581 Publication
Researcher Affiliations
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Yili Kazakh Autonomous Prefecture Animal Husbandry Station, Urumqi 835000, China.
- Xinjiang Yili Kazakh Autonomous Prefecture Animal Husbandry Station, Urumqi 835000, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
- Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology, Urumqi 830052, China.
- Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China.
Grant Funding
- 32202667 / National Natural Science Foundation of China Youth Program
- 2022A02013-1 / Major Science and Technology Project of Xinjiang Uygur Autonomous Region
- ZYYD2025JD02 / Central Guidance Project for Local Science and Technology Development-(Research on the Regulation Mechanism of Horse Breeding and Athletic Performance)
- 2024D01B40 / The Youth Science Fund of the Natural Science Foundation of Xinjiang Uygur Autonomous Re-gion
- XJMFY202401 / Key Laboratory of Horse Breeding and Exercise Physiology of Xinjiang Project
Conflict of Interest Statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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