Improved burn wound healing by the antimicrobial peptide LLKKK18 released from conjugates with dextrin embedded in a carbopol gel
| Autor: | Monika Garcia, Miguel Gama, Manuela Martins-Green, João Pedro Silva, César Costa, Sandeep Dhall, Alex Chan |
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| Přispěvatelé: | Universidade do Minho |
| Rok vydání: | 2015 |
| Předmět: |
Angiogenesis
Macrophage Administration Topical Acrylic Resins 02 engineering and technology Nanoconjugates Pharmacology Biochemistry Rats Sprague-Dawley Succinoylation 0303 health sciences General Medicine 021001 nanoscience & nanotechnology Antimicrobial M2 Macrophage 3. Good health Topical 5.1 Pharmaceuticals Administration Female medicine.symptom Development of treatments and therapeutic interventions 0210 nano-technology Burns Biotechnology Materials science Physical Injury - Accidents and Adverse Effects Antimicrobial peptides Biomedical Engineering Inflammation Bioengineering Biomaterials 03 medical and health sciences Nanocapsules In vivo Dextrins medicine Animals Molecular Biology 030304 developmental biology Wound Healing Science & Technology fungi Rats Oxidative stress Sprague-Dawley Wound healing Gels Biomedical engineering Antimicrobial Cationic Peptides |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Antimicrobial peptides (AMPs) are good candidates to treat burn wounds, a major cause of morbidity, impaired life quality and resources consumption in developed countries. We took advantage of a commercially available hydrogel, Carbopol, a vehicle for topical administration that maintains a moist environment within the wound site. We hypothesized that the incorporation of LLKKK18 conjugated to dextrin would improve the healing process in rat burns. Whereas the hydrogel improves healing, LLKKK18 released from the dextrin conjugates further accelerates wound closure, and simultaneously improving the quality of healing. Indeed, the release of LLKKK18 reduces oxidative stress and inflammation (low neutrophil and macrophage infiltration and pro-inflammatory cytokines levels). Importantly, it induced a faster resolution of the inflammatory stage through early M2 macrophage recruitment. In addition, LLKKK18 stimulates angiogenesis (increased VEGF and microvessel development in vivo), potentially contributing to more effective transport of nutrients and cytokines. Moreover, collagen staining evaluated by Massons Trichrome was visually much more intense after treatment with LLKKK18, suggesting higher collagen deposition. Overall, we generated an effective, safe and inexpensive formulation that maintains a moist environment in the wound, easy to apply and remove, and with potential to prevent infection due to the presence of an antimicrobial peptide. These findings propel us to further study this LLKKK18-containing formulation, setting the foundations towards a potential therapeutic approach for burn wound treatment. Fundação Para a Ciência e Tecnologia |
| Databáze: | OpenAIRE |
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