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Pine nanocellulose and bacterial nanocellulose dressings are similar in the treatment of second-degree burn? experimental study in rats / Os curativos de nanocelulose de pinus e nanocelulose bacteriana são semelhantes no tratamento da queimadura de segundo grau? estudo experimental em ratos
Coelho, Guilherme Andrade; Magalhães, Maria Angélica Baron; Matioski, Alysson; Ribas-Filho, Jurandir Marcondes; Magalhães, Washington Luiz Esteves; Claro, Francine Ceccon; Ramos, Rafael Koerich; Camargo, Thayline Mylena Santana de; Malafaia, Osvaldo.
  • Coelho, Guilherme Andrade; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Magalhães, Maria Angélica Baron; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Matioski, Alysson; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Ribas-Filho, Jurandir Marcondes; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Magalhães, Washington Luiz Esteves; EMBRAPA Forests. Colombo. BR
  • Claro, Francine Ceccon; EMBRAPA Forests. Colombo. BR
  • Ramos, Rafael Koerich; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Camargo, Thayline Mylena Santana de; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
  • Malafaia, Osvaldo; Mackenzie Evangelical Faculty of Paraná. Medical Research Institute. Postgraduate Program in Principles of Surgery. Curitiba. BR
ABCD (São Paulo, Impr.) ; 33(2): e1533, 2020. tab, graf
Article in English | LILACS | ID: biblio-1130522
ABSTRACT
ABSTRACT

Background:

Despite all the advances in medicine and the wide variety of dressings available, the treatment of burn wounds still represents an important medical challenge. The pinus cellulose membrane dressing is a biomaterial with characteristics similar to those of bacterial cellulose, but with lower cost.

Aim:

To evaluate the efficacy of pinus nanocellulose membrane on healing of deep second degree burns in rats and compare with Membracel®.

Method:

Thirty male Wistar rats were submitted to deep second degree burn in dorse, with boiling water at 97o C for 20 s, generating a 314 mm² area wound. The animals were distributed in three dressing groups (n=10) group 1 - simple gauze; group 2 - bacterial cellulose membrane (Membracel®); and group 3 - pinus cellulose membrane. They were evaluated for 20 days to verify clinical condition, macro and microscopic appearance and wound contraction.

Results:

All of them remained clinically well with no differences in weight. Crusts were observed in group 1, and none in groups 2 and 3. Regarding to scar contraction, groups 2 and 3 were similar, better than group 1. Microscopic analysis showed predominance of advanced healing degree in groups 1 and 3, and initial in group 2. Mature collagen was predominant in all groups.

Conclusion:

The pinus nanocellulose membrane is effective in the treatment of experimental second degree burn in rats and its effectiveness is similar to that of the bacterial nanocellular membrane.
RESUMO
RESUMO Racional Apesar de todos os avanços da medicina e da grande variedade de curativos disponíveis, o tratamento das queimaduras ainda representa importante desafio médico. O curativo de membrana de celulose de pinus é biomaterial com características semelhantes à de celulose bacteriana, mas de menor custo.

Objetivo:

Avaliar a eficácia da membrana de nanocelulose de pinus na cicatrização de queimaduras profundas de segundo grau em ratos e comparar com a Membracel®.

Método:

Trinta ratos Wistar machos foram submetidos à queimadura profunda de segundo grau em dorso, com água fervente a 97o C por 20 s, gerando lesão de 314 mm². Os animais foram distribuídos em três grupos de curativos (n = 10) grupo 1 - gaze simples; grupo 2 - membrana de celulose bacteriana (Membracel®); e grupo 3 - membrana de celulose de pinus. Eles foram avaliados por 20 dias para verificar o quadro clínico, aspecto macro e microscópico e a contração da ferida.

Resultados:

Todos permaneceram clinicamente bem, sem diferenças de peso. Crostas foram observadas no grupo 1 e nenhuma nos grupos 2 e 3. Em relação à contração da cicatriz, os grupos 2 e 3 foram semelhantes, melhores que o grupo 1. A análise microscópica mostrou predomínio de grau de cicatrização avançado nos grupos 1 e 3, e inicial no grupo 2. O colágeno maduro foi predominante em todos os grupos.

Conclusão:

A membrana de nanocelulose de pinus é eficaz no tratamento de queimaduras experimentais de segundo grau em ratos e sua eficácia é semelhante à da membrana nanocelular bacteriana.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Bandages / Wound Healing / Burns / Cellulose / Pinus Limits: Animals Language: English Journal: ABCD (São Paulo, Impr.) Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: EMBRAPA Forests/BR / Mackenzie Evangelical Faculty of Paraná/BR

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Full text: Available Index: LILACS (Americas) Main subject: Bandages / Wound Healing / Burns / Cellulose / Pinus Limits: Animals Language: English Journal: ABCD (São Paulo, Impr.) Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: EMBRAPA Forests/BR / Mackenzie Evangelical Faculty of Paraná/BR