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Published on: October 3, 2019
Chlorogenic acid prevents isoproterenol-induced hypertrophy in neonatal rat myocytes
Yanfei Li1, Dan Shen2, Xiaomei Tang2
1School of Life Sciences and Technology, Tongji University, Shanghai, China; Tongji University School of Medicine, Shanghai, China.
Insights
Chlorogenic acid (CGA) may prevent cardiac hypertrophy by reducing inflammation and oxidative stress. This study shows CGA treatment decreased hypertrophic markers and blocked key signaling pathways in rat heart cells.
Area of Science:
- Cardiovascular Science
- Pharmacology
- Molecular Biology
Background:
- Cardiac hypertrophy is a risk factor for heart failure, a leading cause of death.
- Chinese herbal medicine components like chlorogenic acid (CGA) possess antioxidant and anti-inflammatory properties.
- Understanding molecular mechanisms underlying cardiac hypertrophy is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the potential of chlorogenic acid (CGA) in preventing isoproterenol (Iso)-induced cardiac hypertrophy.
- To elucidate the molecular pathways through which CGA exerts its protective effects in cardiac myocytes.
- To assess the impact of CGA on oxidative stress and inflammatory signaling in the context of cardiac hypertrophy.
Main Methods:
- Neonatal rat myocytes were pre-treated with chlorogenic acid (CGA).
- Cardiac hypertrophy was induced using isoproterenol (Iso).
- Levels of hypertrophic markers (ANP, BNP, β-MHC), NF-κB signaling pathway components, and reactive oxygen species (ROS) were measured.
Main Results:
- Chlorogenic acid pre-treatment significantly decreased the expression of hypertrophic markers ANP, BNP, and β-MHC.
- CGA inhibited the nuclear translocation of NF-κB and upregulated its inhibitor, NF-κBIA.
- Intracellular reactive oxygen species (ROS) levels were reduced following CGA treatment.
Conclusions:
- Chlorogenic acid demonstrates potential in inhibiting isoproterenol-induced cardiac hypertrophy.
- CGA appears to exert its protective effects by attenuating the NF-κB signaling pathway.
- Suppression of reactive oxygen species (ROS) is a key mechanism by which CGA combats cardiac hypertrophy.
Abstract:
Cardiac hypertrophy is an independent risk factor for cardiovascular disease and its subsequent progression to heart failure represents a major cause of morbidity and mortality in the world. CGA is an important component of Chinese herbal medicine, acting as an antioxidant, scavenging free radicals and preventing inflammation. This study found that with the pre-treatment of chlorogenic acid in Iso-induced neonatal rat myocytes, the levels of the hypertrophic markers, ANP, BNP and β-MHC decreased. The nuclear translocation of NF-κB was blocked, whereas NF-κBIA, an inhibitor of NF-κB, was upregulated accordingly. And the level of the intracellular ROS was also reduced. These data reveal that chlorogenic acid may inhibit Iso-induced cardiac hypertrophy by attenuating NF-κB signaling pathway and suppressing ROS.
