4.7 Article

Novel Fusidic Acid Cream Containing Metal Ions and Natural Products against Multidrug-Resistant Bacteria

期刊

PHARMACEUTICS
卷 14, 期 8, 页码 -

出版社

MDPI
DOI: 10.3390/pharmaceutics14081638

关键词

fusidic acid; formulation; MRSA; natural products; skin infections; FRSA; antimicrobial activity

资金

  1. Beit Jala Pharmaceutical Co., Ltd., Bethlehem, Palestine

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This study aimed to develop and evaluate a cream formulation containing fusidic acid and natural products for eradicating fusidic-acid-resistant microorganisms in skin infections. The study found that the cream had stable physical and chemical properties, and demonstrated better antimicrobial activity than the marketed product.
Background: Drug design and development to overcome antimicrobial resistance continues to be an area of research due to the evolution of microbial resistance mechanisms and the necessity for new treatments. Natural products have been used since the dawn of medicine to heal skin infections. The antimicrobial properties of fusidic acid, zinc sulfate, and copper sulfate have been studied and are well known. Furthermore, these compounds have different mechanisms of action in targeting microorganisms, either by inhibiting protein synthesis or bacterial cell walls. Therefore, their combination is expected to have synergistic activity in killing bacteria. However, the synergistic antimicrobial activity has not been evaluated in a cream formulation. Therefore, the objectives of this in vitro study were to develop and evaluate the synergistic efficacy of fusidic acid in combinations with natural products, including oleuropein, thyme oil, zinc sulfate, and copper sulfate, as a cream to eradicate fusidic-acid-resistant microorganisms in skin infections. Methods: Three different cream formulations were developed, compared, and labeled F1, F2, and F3. The compounds were studied for their antibacterial activity. In addition, the stability of the cream was investigated at 25 degrees C and 40 degrees C in plastic jars over three months. Results: The F2 formula has adequate physicochemical properties. Furthermore, it displays stable and better results than the marketed trade product and has potential inhibition zones (ZOI). Interestingly, considerable numbers (9.5%) of fusidic-acid-resistant Staphylococcus aureus (FRSA) isolates possessed a high resistance pattern with MIC >= 128 mu g/mL. In contrast, most tested FRSA isolates (90.5%) had a low resistance pattern with MIC <= 8 mu g/mL. Conclusion: In conclusion, the F2 cream made with fusidic acid, oleuropein, thyme oil, zinc sulfate, and copper sulfate in the right amounts has stable physical and chemical properties and has potential against FRSA as an antimicrobial agent.

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