The role of mouse mast cell proteases in the proliferative phase of wound healing in microdeformational wound therapy.
Plast Reconstr Surg
; 134(3): 459-467, 2014 Sep.
Article
em En
| MEDLINE
| ID: mdl-24814421
ABSTRACT
BACKGROUND:
Stored in the secretory granules of cutaneous mouse mast cells are mouse mast cell proteases (mMCP-4, -5, and -6). Using transgenic mouse lines that lacked these enzymes, it was shown that mMCP-4 and mMCP-5 modulate the outcome of burn-induced skin injury. Whether or not these proteases also play a role in the repair of surgically damaged skin, with or without microdeformational wound therapy, remains to be determined.METHODS:
Wild-type C57BL/6 mice and transgenic C57BL/6 mouse lines lacking mMCP-4, -5, or -6 were subjected to surgical wounding of their skin. Wounds were splinted with a stabilizing patch, and the mice received either microdeformational wound therapy (n = 5) or occlusive dressing (n = 5) for 7 days. Wound healing parameters were assessed in the proliferative phase.RESULTS:
Cell proliferation in the wounded wild-type mice receiving microdeformational wound therapy was 60 ± 3 percent. Cell proliferation was only 35 ± 5 percent, 25 ± 5 percent, and 45 ± 4 percent for the treated mMCP-4-, mMCP-5-, and mMCP-6-null mice, respectively (p = 0.005). Blood vessel sprouting was higher in the control mice with microdeformational wound therapy (170 ± 40 vessels/high-power field) compared with mouse mast cell protease 6-null mice with microdeformational wound therapy (70 ± 20 vessels/high-power field; p = 0.005), and higher in the control mice with occlusive dressing (110 ± 30 vessels/high-power field) compared with mMCP-4-null mice with occlusive dressing (50 ± 20 vessels/high-power field; p = 0.01). Qualitatively, the granulation tissue of all the protease-deficient groups receiving microdeformational wound therapy was disrupted.CONCLUSION:
Results suggest that mouse mast cell proteases 4, 5, and 6 are mediators of the critical role mast cells play in microdeformational wound therapy in the proliferative phase of healing.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Pele
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Cicatrização
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Ferimentos e Lesões
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Serina Endopeptidases
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Quimases
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Triptases
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Tratamento de Ferimentos com Pressão Negativa
Tipo de estudo:
Evaluation_studies
Limite:
Animals
Idioma:
En
Revista:
Plast Reconstr Surg
Ano de publicação:
2014
Tipo de documento:
Article