Exploring How Chinese Hawthorn Leaves Help Heal Heart Damage

Jenn Hoskins
21st February, 2024

Exploring How Chinese Hawthorn Leaves Help Heal Heart Damage
Image Source: © Natural Science News. This image is an artistic rendition.
Myocardial ischemia, commonly known as heart ischemia, occurs when the heart muscle doesn’t receive enough oxygen-rich blood. This can lead to chest pain, shortness of breath, and in severe cases, heart attack. Traditional treatments exist, but researchers are continually exploring complementary therapies. Hawthorn leaf has a history of use for heart-related conditions, and recent research from Chengde Medical College[1] aims to understand how it might work at a molecular level, potentially offering new avenues for treatment. The study combined several advanced analytical techniques to investigate the effects of hawthorn leaf. Researchers began by identifying the active chemical components within the leaf and predicting the proteins within the body that these components might interact with. They used databases like the Traditional Chinese Medicine System Pharmacology and Swiss Target Prediction to achieve this. Simultaneously, they identified proteins known to be involved in myocardial ischemia using databases such as Gene Card and the Therapeutic Targets Database. This allowed them to pinpoint potential targets where hawthorn leaf’s components could exert a therapeutic effect. A key part of the process involved ‘network pharmacology’. This is a computational approach that maps out the complex relationships between the active ingredients in hawthorn leaf, the proteins they target, and the biological pathways involved in heart ischemia. The researchers used software called Cytoscape to build a network illustrating these connections. This analysis revealed ten proteins, including AKT1 and EGFR, as particularly important ‘hub genes’ – meaning they interact with many other proteins and likely play a central role in the process. Three compounds – quercetin, kaempferol, and isorhamnetin – were identified as core active components. To further investigate how these compounds might work, the researchers used ‘molecular docking’. This is a computer simulation that predicts how well a molecule (in this case, a hawthorn leaf component) fits into the active site of a target protein. A strong fit suggests a strong interaction and potential for the compound to alter the protein’s function. The simulations showed that these three compounds strongly interacted with the identified core targets. The study then moved to laboratory experiments using cells. These experiments aimed to confirm the findings from the computational analyses. Researchers found that quercetin, one of the core compounds, protected cells from oxidative damage – a process that contributes to heart injury during ischemia. They also observed that quercetin influenced the expression of proteins involved in cell survival and death, specifically PI3K, P-AKT/AKT, and Bax/Bcl-2. These findings build upon earlier research demonstrating the potential benefits of flavonoids for cardiovascular health[2][3]. Flavonoids, a class of plant compounds found in hawthorn leaf, have been linked to a reduced risk of heart disease and are thought to work by reducing oxidative stress and inflammation[2]. The current study expands on this by identifying specific molecular targets and pathways through which hawthorn leaf’s flavonoids might exert their protective effects. Interestingly, another study highlighted the importance of specific compounds found in the volatile oil of Acorus tatarinowii in protecting against heart injury[4]. While focusing on a different plant, this research also used network pharmacology to identify key signaling pathways – such as the VEGF and cAMP pathways – involved in protecting the heart. The Chengde Medical College study identified similar pathways, including the PI3K/Akt pathway, suggesting that these pathways may be common targets for natural compounds aimed at treating myocardial ischemia. The researchers identified over 450 Gene Ontology entries and 77 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways potentially affected by hawthorn leaf, with the PI3K/Akt pathway being particularly prominent. This pathway is crucial for cell growth, survival, and metabolism, and its activation is often impaired during heart ischemia. By modulating this pathway, hawthorn leaf may help restore normal heart function.

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References

Main Study

1) Uncovering the Mechanism of Chinese Hawthorn Leaf on Myocardial Ischemia Based on Network Pharmacology, Molecular Docking Verification, and In Vitro Studies.

Published 20th February, 2024

https://doi.org/10.1007/s12012-024-09825-w

Related Studies

2) Recent Research on Flavonoids and their Biomedical Applications.

https://doi.org/10.2174/0929867327666200713184138

3) The role of flavonoids in the prevention and management of cardiovascular complications: a narrative review.

https://doi.org/10.21037/apm-21-1343

4) Uncovering the Protective Mechanism of the Volatile Oil of Acorus tatarinowii against Acute Myocardial Ischemia Injury Using Network Pharmacology and Experimental Validation.

https://doi.org/10.1155/2021/6630795


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