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Rocha MADC, Silva LMC, Oliveira WAD, Bezerra DDO, Silva GCD, Silva LDS, Medeiros BLDN, Baêta SDAF, Carvalho MAMD, Argôlo NM. Allogeneic mesenchymal stem cells and xenogenic platelet rich plasma, associated or not, in the repair of bone failures in rabbits with secondary osteoporosis. Acta Cir Bras 2017; 32:767-780. [PMID: 29019594 DOI: 10.1590/s0102-865020170090000009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/18/2017] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To assess the efficacy of allogeneic mesenchymal stem cells and xenogenic platelet rich plasma in the treatment of bone failure of osteoporotic rabbits secondary to estrogenic deprivation and iatrogenic hypercortisolism. METHODS Eight female rabbits underwent ovarian resection and corticoid therapy to induce clinical status of osteoporosis. Four failures were produced in the tibiae, with each failure being treated with hemostatic sponge, allogenic mesenchymal stem cells, xenogenic platelet-rich plasma and the association between both. The animals were divided into two groups, evaluated radiographically and histopathologically at 30 and 60 days post treatment. RESULTS A radiographically confirmed consolidation of bone failures treated with allogeneic mesenchymal stem cells, associated with the histopathological image of mature and immature bone tissue, without evidence of osteopenia, was compared with the other groups, in which radiolucent failures with osteopenia and fibrosis were still present, denoting the satisfactory effect of the first treatment in detriment to the others. CONCLUSION The treatment of bone failures of rabbits with secondary osteoporosis with allogeneic mesenchymal stem cells induced greater bone consolidation with mature and immature bone tissue production (p<0.01), when compared to the other treatments.
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Affiliation(s)
- Mariá Andrade de Carvalho Rocha
- Fellow Master degree, Postgraduate Program in Animal Science, Universidade Federal do Piauí (UFPI), Teresina-PI, Brazil. Radiography, technical procedures, obtaining platelet-rich plasma
| | - Laís Meireles Costa Silva
- Fellow Master degree, Postgraduate Program in Animal Science, Universidade Federal do Piauí (UFPI), Teresina-PI, Brazil. Radiography, technical procedures, obtaining platelet-rich plasma
| | - Wellson Andrade de Oliveira
- Fellow Master degree, Postgraduate Program in Animal Science, Universidade Federal do Piauí (UFPI), Teresina-PI, Brazil. Radiography, technical procedures, obtaining platelet-rich plasma
| | - Dayseanny de Oliveira Bezerra
- Fellow PhD degree, Postgraduate Program in Animal Science, UFPI, Teresina-PI, Brazil. Anesthetic, technical procedures
| | - Gustavo Cardoso da Silva
- Fellow PhD degree, Northeast Network of Biotechnology, UFPI, Teresina-PI, Brazil. Computerized image analysis
| | - Lucilene Dos Santos Silva
- Fellow Postdoctoral degree, National Postdoctoral Program (PNPD/CNPq), UFPI, Teresina-PI, Brazil. Photomicrographs and histopathological examinations
| | | | - Sílvia de Araújo França Baêta
- PhD, Associate Professor, Department of Clinical and Veterinary Surgery, UFPI, Teresina-PI, Brazil. Histopathological examinations, supervised all phases of the study
| | | | - Napoleão Martins Argôlo
- PhD, Associate Professor, Department of Clinical and Veterinary Surgery, UFPI, Teresina-PI, Brazil. Design of the study, supervised all phases of the study
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Melo M, Verçosa Júnior D, Pinto M, Silveira J, Ferraz V, Ecco R, Paes P. Intoxicação experimental com extratos de Mascagnia rigida (Malpighiaceae) em camundongos. ARQ BRAS MED VET ZOO 2008. [DOI: 10.1590/s0102-09352008000300017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Foi realizado o fracionamento químico do extrato aquoso da Mascagnia rigida Griseb., uma importante planta tóxica no Brasil, para se obter cinco substratos ricos em diferentes grupos químicos - alcalóides, flavanóides, taninos, saponinas e açúcares, ácidos orgânicos e aminoácidos -, e investigar a toxicidade dessas frações, exceto a última, em 75 camundongos. Os animais, distribuídos aleatoriamente em cinco grupos, receberam: grupo I - alcalóides; grupo II - flavanóides; grupo III - taninos; grupo IV - saponinas e grupo V - placebo, este último funcionando como controle negativo. Todos os grupos, com exceção do grupo-controle, redistribuídos em três subgrupos, A, B e C, com cinco animais cada, receberam, respectivamente, 9g/kg, 18g/kg e 27g/kg de cada substrato. As frações foram fornecidas via oral, diariamente, por sete dias; no sétimo dia, foi coletado sangue para o estudo do perfil sangüíneo e dosagem de enzimas musculares. As frações de alcalóides e taninos foram capazes de causar alteração no perfil enzimático-muscular, com aumento significativo da enzima miocárdica. Observou-se, também, aumento significativo na porcentagem da CK-MB após a administração das frações de saponinas e taninos, comprovando a ação tóxica da M. rigida sobre a fibra muscular cardíaca.
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