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Rev. bras. cir. plást ; 31(3): 385-390, 2016. ilus, tab
Article in English, Portuguese | LILACS | ID: biblio-2307

ABSTRACT

INTRODUÇÃO: O aumento da sobrevida na fase aguda do paciente grande queimado faz também aumentar a prevalência das sequelas cicatriciais estético-funcionais. Ao pensarmos na relevância clínica da lipoenxertia subcicatricial, necessita-se da compreensão e avaliação microscópica das reais alterações após o procedimento. MÉTODOS: Foram selecionados oito pacientes, vítimas de queimadura por álcool, com tempo médio após queimadura de 12 meses (10-14 meses), sendo submetidos à lipoenxertia subcicatricial associada à Rigottomy. Foram realizadas biópsias cutâneas no pré e pós-operatório tardio com 14 semanas. Avaliados os quesitos: 1 - Melhora estético funcional da cicatriz pela escala de Vancouver; 2 - Análise quantitativa e qualitativa do colágeno cicatricial; 3 -Análise imunohistoquímica da vascularização cicatricial com anti-fator de crescimento derivado do endotélio vascular (antiVEGE). RESULTADOS: Ao compararmos o período pré e pós-lipoenxertia, pôde-se avaliar que houve melhora estético-funcional significativa e, microscopicamente, redefinição entre os limites da derme papilar e reticular; redução quantitativa e reorganização do colágeno, além do decréscimo da vascularização tecidual pela análise imunohistoquímica. CONCLUSÃO: O princípio básico de todo processo cicatricial fisiológico é reestabelecer a homeostasia local, ou seja, as etapas exageradamente intensificadas levam a alterações clínicas catastróficas. Ao realizar a lipoenxertia subcicatricial associada à Rigotomia, foi verificada, neste estudo, a melhora qualitativa e quantitativa do tecido. Sendo assim, torna-se evidente o futuro promissor deste procedimento para a complementação terapêutica das patologias cicatriciais.


INTRODUCTION: The increase in survival of large burn patients during the acute phase has also increased the prevalence of esthetic-functional scarring sequelae. With regard to the clinical relevance of subcicatricial fat grafting, the actual changes after the procedure need to be understood and microscopically evaluated. METHODS: Eight patients with alcohol burns, with an average time after burn of 12 months (10-14 months), who underwent subcicatricial fat grafting associated with rigotomy were selected. Skin biopsies were performed in before and 14 weeks after operation. The following issues were assessed: 1) esthetic-functional improvement of the scar, by using the Vancouver scar scale; 2) quantitative and qualitative analyses of cicatricial collagen; 3) immunohistochemical analysis of scar vascularization with anti-vascular endothelial growth factor (anti-VEGF) antibody. RESULTS: When comparing the pre- and post-fat grafting period, a significant esthetic-functional improvement and, microscopically, a redefinition of the boundaries of the papillary and reticular dermis were observed, as well as quantitative reduction and reorganization of collagen, in addition to the decrease of the vascularization of the tissue through immunohistochemical analysis. CONCLUSION: The basic principle of the whole physiological healing process is to reestablish local homeostasis, that is, excessively intensified steps that lead to severe clinical changes. When subcicatricial fat grafting associated with rigotomy was performed, qualitative and quantitative improvements of the tissue were verified in this study. Thus, it becomes evident that this procedure can complement the treatment of cicatricial pathologies.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , History, 21st Century , Wound Healing , Burns, Chemical , Cicatrix , Skin Transplantation , Plastic Surgery Procedures , Evaluation Study , Esthetics , Homeostasis , Wound Healing/physiology , Burns, Chemical/surgery , Burns, Chemical/complications , Cicatrix/surgery , Cicatrix/complications , Cicatrix/therapy , Skin Transplantation/adverse effects , Skin Transplantation/methods , Plastic Surgery Procedures/adverse effects , Plastic Surgery Procedures/methods , Homeostasis/physiology
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