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Multicomponent therapeutics of berberine alkaloids
Jiaoyang Luo1, Dan Yan, Meihua Yang
1China Military Institute of Chinese Medicine, Integrative Medical Center of 302 Military Hospital, Beijing 100039, China ; Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
Summary
Berberine alkaloids (BAs) interactions were studied against MRSA. An optimal BA combination showed enhanced anti-MRSA potency in vivo, outperforming natural herb mixtures.
Area of Science:
- Pharmacology
- Microbiology
- Natural Products Chemistry
Background:
- Berberine alkaloids (BAs) possess known antibacterial and antiviral properties.
- The synergistic or antagonistic interactions between different BAs remain largely uncharacterized.
- Understanding these interactions is crucial for optimizing their therapeutic potential.
Purpose of the Study:
- To elucidate the interactions among berberine alkaloids (BAs).
- To determine the optimal combination of BAs for enhanced anti-methicillin-resistant Staphylococcus aureus (MRSA) activity.
- To validate the efficacy of the optimal BA combination in vivo.
Main Methods:
- Methicillin-resistant Staphylococcus aureus (MRSA) was used as a model organism.
- Modified broth microdilution and checkerboard assays were employed to assess BA activity and interactions.
- Quadratic rotation-orthogonal combination design was used to optimize multicomponent BA ratios.
- In vitro and in vivo (mouse model) validation of the optimal combination was performed.
Main Results:
- Interactions among BAs were concentration-dependent.
- Synergistic interactions were observed between berberine and epiberberine, jatrorrhizine and palmatine, and jatrorrhizine and coptisine.
- Antagonistic interactions were noted between coptisine and epiberberine.
- An optimal combination ratio (berberine:coptisine:jatrorrhizine:palmatine:epiberberine = 0.702:0.863:1:0.491:0.526) demonstrated superior anti-MRSA potency.
Conclusions:
- Berberine alkaloid interactions are complex and concentration-dependent.
- The identified optimal BA combination exhibits enhanced anti-MRSA efficacy compared to natural herb combinations.
- This optimized BA formulation holds promise for treating MRSA infections.
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