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Cardiovascular Protective Effects of Salvianic Acid A on db/db Mice with Elevated Homocysteine Level
Lei Gao1, Parco M Siu2, Shun-Wan Chan3
1Department of Health Technology and Informatics, Hong Kong Polytechnic University, Hung Hom, Hong Kong.
Insights
Salvianic acid A (SAA) protects diabetic mice from cardiovascular issues by improving homocysteine metabolism. This traditional Chinese medicine reduces left ventricular hypertrophy and endothelial dysfunction, offering a potential therapeutic strategy.
Area of Science:
- Cardiovascular Pharmacology
- Diabetic Complications
- Traditional Chinese Medicine
Background:
- Diabetic cardiovascular complications, including left ventricular hypertrophy (LVH) and endothelial dysfunction (ED), are often preceded by elevated homocysteine (Hcy).
- Traditional Chinese Medicine (TCM), specifically Salvianic acid A (SAA), has a history of use in cardiovascular disease treatment.
Purpose of the Study:
- To investigate the cardiovascular protective effects of SAA in ameliorating LVH and ED in diabetic mice with elevated Hcy.
- To determine if SAA's protective effects are linked to modulating Hcy metabolism, methylation potential, and redox status in the liver.
Main Methods:
- Utilized db/db mice with elevated blood Hcy levels to model diabetic cardiovascular complications.
- Administered SAA and assessed its impact on left ventricular mass and endothelial function.
- Conducted immunological assays on liver tissues to analyze methylation potential and redox status.
Main Results:
- SAA administration significantly reduced left ventricular mass accumulation and ameliorated endothelial dysfunction in the treated mice.
- SAA treatment was associated with decreased methylation potential but improved redox status in the liver of diabetic mice with elevated Hcy.
- SAA demonstrated a protective effect against hyperglycemia- and hyperhomocysteinemia-induced oxidative stress.
Conclusions:
- Salvianic acid A exhibits potential cardiovascular protective effects in a diabetic mouse model with hyperhomocysteinemia.
- SAA may exert its benefits by modulating homocysteine metabolism, influencing methylation potential and redox balance.
- SAA represents a promising therapeutic agent for mitigating diabetic cardiovascular complications associated with oxidative stress and elevated Hcy.
Abstract:
The onsets of left ventricular hypertrophy (LVH) and endothelial dysfunction (ED) in diabetics, especially in those with elevated homocysteine (Hcy), precede the development of cardiovascular (CV) events. Salvianic acid A (SAA) is a renowned Traditional Chinese Medicine (TCM) that has been applied in the treatment of cardiovascular disease for many decades. In this study, we aimed (1) to investigate the CV protective effects of SAA on ameliorating LVH and ED in db/db mice with elevated blood Hcy level and (2) to decipher whether the observed CV protective effects of SAA are associated with Hcy metabolism by modulating the methylation potential and redox status in the liver of the db/db mice with elevated blood Hcy level. Our results found that the administration of SAA could significantly slow down the build-up of left ventricular mass and ameliorate ED. Immunological assay analysis on the mouse liver tissue also indicated that SAA treatment on db/db mice with elevated Hcy was associated with reduced methylation potential but improved redox status. In conclusion, we revealed that SAA has the potential to protect against the hyperglycemia- and hyperhomocysteinemia-induced oxidative stress on diabetic mice via modulation in Hcy metabolism.
