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Published on: February 9, 2011
Therapeutic Potential of Mangosteen Pericarp Extract-Loaded Liposomes against Superficial Skin Infection Caused by
Seong-Yeop Kim1, Seong-Yong Park1, Jung-Hwa Lee1
1Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea.
Abstract:
α-mangostin (α-MG) demonstrates antibacterial activity against Staphylococcus species. Therefore, this study aimed to explore the antibacterial activity of α-MG-rich mangosteen pericarp extract (MPE)-loaded liposomes against Staphylococcus isolates from companion animal skin diseases in vitro and evaluated their therapeutic potential in a murine model of superficial skin infection caused by S. pseudintermedius. α-MG-rich extract was purified from mangosteen pericarp and then complexed with γ-cyclodextrin (γ-CD), forming the inclusion complexes. Nanoliposomes containing MPE and γ-CD complexes were prepared by adding lecithin and casein. Minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of MPE-loaded liposomes were determined using agar dilution and broth microdilution methods. The therapeutic potential of MPE-loaded liposomes was evaluated in vivo on tape-stripped skin lesions infected with S. pseudintermedius. Purified MPE and MPE-loaded liposomes contained 402.43 mg/g and 18.18 mg/g α-MG, respectively. MPE-loaded liposomes showed antibacterial activity against clinical Staphylococcus isolates in vitro but did not show antibacterial activity against Gram-negative bacterial isolates. MPE-loaded liposomes demonstrated consistent MICs and MBCs against Staphylococcus isolates. These liposomes significantly reduced bacterial numbers and lesional sizes in a superficial skin infection model. Moreover, they reconstructed the epidermal barrier in skin lesions. The therapeutic concentrations of MPE-loaded liposomes did not induce cytotoxicity in canine progenitor epidermal keratinocyte cells. In conclusion, MPE-loaded liposomes hold promise for the development of a prospective topical formulation to treat superficial pyoderma in companion animals.
Insights
Mangosteen pericarp extract (MPE)-loaded liposomes show promising antibacterial activity against Staphylococcus species, effectively treating skin infections in companion animals. These liposomes offer a potential new topical treatment for pyoderma.
Area of Science:
- Veterinary Dermatology
- Nanotechnology in Medicine
- Natural Product Chemistry
Background:
- Staphylococcus species are common causes of skin infections in companion animals.
- Alpha-mangostin (α-MG) from mangosteen pericarp exhibits antibacterial properties.
- Developing effective topical treatments for animal pyoderma is crucial.
Purpose of the Study:
- To investigate the antibacterial activity of α-MG-rich mangosteen pericarp extract (MPE)-loaded liposomes against Staphylococcus isolates.
- To evaluate the therapeutic potential of these liposomes in a murine model of superficial skin infection.
- To assess the safety and efficacy of the liposomal formulation for treating companion animal skin diseases.
Main Methods:
- Purification of α-MG-rich MPE and complexation with gamma-cyclodextrin (γ-CD).
- Preparation of nanoliposomes encapsulating MPE and γ-CD complexes.
- In vitro determination of Minimum Inhibitory Concentrations (MICs) and Minimum Bactericidal Concentrations (MBCs).
- In vivo evaluation of therapeutic efficacy in a murine skin infection model caused by S. pseudintermedius.
Main Results:
- MPE-loaded liposomes demonstrated significant in vitro antibacterial activity against clinical Staphylococcus isolates.
- Consistent MICs and MBCs were observed, with no activity against Gram-negative bacteria.
- In vivo studies showed reduced bacterial load, smaller lesion sizes, and epidermal barrier reconstruction.
- The liposomal formulation exhibited no cytotoxicity in canine progenitor epidermal keratinocyte cells.
Conclusions:
- MPE-loaded liposomes are effective against Staphylococcus-induced skin infections in a preclinical model.
- The liposomal formulation shows potential for developing a safe and effective topical treatment for superficial pyoderma in companion animals.
- This approach leverages natural compounds for veterinary dermatological applications.
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