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Assessment of Cardiac Function and Energetics in Isolated Mouse Hearts Using 31P NMR Spectroscopy
Published on: August 31, 2010
Targeted Plasma Amino Acid Metabolic Remodeling and Pharmacological Regulation in Heart Failure Rats Using
Renliang Xue1, Xindan Zhang1, Yating Ge1
1State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
NMR in Biomedicine
|June 20, 2026
Summary
This study developed a novel 2D NMR method for analyzing amino acids in heart failure (HF) rats. The method identified key amino acids linked to cardiac injury and showed potential for noninvasive diagnosis and therapeutic assessment in HF.
Area of Science:
- Biochemistry
- Cardiovascular Science
- Analytical Chemistry
Background:
- Nuclear magnetic resonance (NMR) metabolomics is powerful for biological analysis but faces challenges with signal overlap and sensitivity.
- Heart failure (HF) involves complex metabolic changes that require advanced analytical techniques for comprehensive understanding.
Purpose of the Study:
- To develop an optimized 2D NMR approach for high-throughput, high-resolution amino acid profiling in HF.
- To correlate systemic amino acid metabolism with regional cardiac injury in a rat model of HF.
- To evaluate the efficacy of various therapeutic strategies in reversing HF-associated metabolic dysregulation.
Main Methods:
- Developed and applied a probe-induced sensitivity enhancement with nonuniform sampling and band-selective 1H-13C HSQC (PRISE-NUS-bs-HSQC) technique.
- Integrated plasma metabolomics with spatially resolved cardiac tissue metabolomics using AFADESI-MSI.
- Analyzed plasma amino acid profiles in a rat model of heart failure.
Main Results:
- Identified specific amino acids (valine, leucine, isoleucine, phenylalanine, methionine, glutamine) positively correlated with cardiac infarct area disturbances.
- A composite biomarker panel of these amino acids distinguished HF rats from controls with high accuracy (AUC = 0.926).
- All tested therapeutic strategies, including traditional Chinese medicine (TCM) and Western medicine, partially reversed amino acid metabolic dysregulation; combined therapy showed synergistic effects.
Conclusions:
- Established a noninvasive, efficient 2D NMR framework for linking systemic amino acid metabolism to cardiac injury in HF.
- Provided mechanistic insights into amino acid metabolic remodeling during HF progression.
- Highlighted the translational potential of this NMR-based approach for noninvasive HF diagnosis and therapeutic evaluation.
