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Master's Dissertation
DOI
https://doi.org/10.11606/D.82.2010.tde-20072012-092546
Document
Author
Full name
Cassiano de Moura Abdalla
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2010
Supervisor
Committee
Gaspar, Ana Maria Minarelli (President)
Ribeiro, Sidney José Lima
Rollo, João Manuel Domingos de Almeida
Title in Portuguese
Uso da membrana de celulose bacteriana associada a células mesenquimais e ácido hialurônico após lesão em cartilagem de patela de suínos
Keywords in Portuguese
Biocompatibilidade
Cartilagem articular
Joelho
Membrana de celulose
Patela
Suínos
Abstract in Portuguese
O objetivo deste trabalho foi avaliar a membrana de celulose bacteriana associada a células mesenquimais, que foram inoculadas juntamente com derivado do ácido hialurônico, hylano G-F 20, em patelas lesadas de suínos. Foram utilizados 12 suínos (24 joelhos) submetidos à raspagem das superfícies articulares das patelas até osso esponjoso; joelhos esquerdos sem tratamento, grupo controle (GC). Joelhos direitos, grupo tratado (GT), tiveram membranas de celulose bacteriana fixadas às superfícies de suas patelas, sendo que as mesmas foram preparadas com inoculação de células mesenquimais, ósseas e cartilaginosas, provenientes das raspagens das superfícies, lavadas em solução fisiológica 0,9%, filtradas e diluídas em 5 ml de solução fisiológica à 0,9% e posteriormente acrescentados 2 ml de hylano G-F 20. Colhidos 5 ml dessa papa que teve contido o volume de 16,35 x '10 POT.8' células na sua totalidade, e foram infiltrados na membrana de celulose revestindo a patela, obedecendo a distribuição de 3,27 x '10 POT.8' por 1,2 'CM POT.3'. Após 2, 4 e 6 meses os animais foram sacrificados para avaliações macroscópicas e histológicas. As superfícies patelares apresentaram aspecto de neoformação de cartilagem aos dois meses; essas membranas evoluíram para tecido fibroso de altíssima resistência, com densidade de fibras conjuntivas aumentando proporcionalmente ao tempo de cirurgia, quatro ou seis meses conforme as células do infiltrado tiveram alterações morfológicas para fibroblastos Ao mesmo tempo, parte do volume dessas células sofreu processo de degeneração e morte celular, semelhante ao mecanismo de apoptose celular. Dessa forma, ofereceu substratos para as células remanescentes, colaborando para a neoformação desse tecido conjuntivo. Não ocorreram processos inflamatórios ou agressão às cartilagens em contigüidade à membrana. Pelo contrário, em relação ao grupo controle não tratado, a membrana de celulose bacteriana utilizada segundo a metodologia aplicada, atuou com uma barreira protetora para agressões maiores à cartilagem da fossa intercondilar do fêmur que manteve a integridade de seus contornos articulares. Desta forma, segundo a metodologia utilizada, concluímos que a membrana de celulose bacteriana apresentou biocompatibilidade para uso articular, hábil para agregar condrócitos e fibroblastos.
Title in English
Use of bacterial cellulose membrane associated with mesenchymal cells and hyaluronic acid after injury in pig patella cartilage
Keywords in English
Articular cartilage
Biocompatibilty
Cellulose
Knee
Pig's patella
Abstract in English
The goal of this work was to evaluate the bacterial cellulose membrane associated with mesenchymal cells, which were inoculated with hyaluronic acid derivative, G-F 20 hylano in patelas injured pigs. 12 pigs were used (24 knees) submitted to the scraping of the articular surfaces of spongy bone patelas up; knees left without treatment, group controller (GC). Knees rights, treated group (GT), bacterial cellulose membranes had fixed on their surfaces patelas, being that they were prepared with inoculation of mesenchymal cells, bone and cartilage from sweeps of surfaces, washed in 0.9% saline solution, filtered and diluted in 5 ml of saline solution to 0.9% and subsequently added 2 ml hylano G-F 20. Collected 5 ml that Pope had contained the volume 16.35 x '10 POT.8' cells in its entirety, and were infiltrated in the membrane of cellulose coating the patella, obeying distribution 3.27 x '10 POT.8' per 1.2 'CM POT.3'. After 2, 4 and 6 months the animals were sacrificed to macroscopic and histological evaluations. The surfaces patellar components submitted aspect of neoplasm of cartilage to two months; These membranes evolved into fibrous tissue resistance of high density fibrous tears increasing in proportion to the time of surgery, four or six months as had infiltrated cells for morphological changes while fibroblasts, part of the volume of these cells suffered process of degeneration and cell death, similar to the mechanism of cellular apoptosis. This way, offered substrates for the remaining cells, collaborating for this connective tissue neoplasm. There were no inflammatory processes or aggression on cartilage in adjacency to the membrane. On the contrary, compared to the untreated control group, the bacterial cellulose membrane used according to the methodology applied, served with a protective barrier for larger aggressions of cartilage of the femur intercondilar trench that maintained the integrity of its articular contours. This way, according to the methodology, we found that the bacterial cellulose membrane biocompatibility presented for use articulate, skilled to aggregate condrócitos and fibroblasts.
 
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Publishing Date
2012-08-01
 
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