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Teixeira DG, Hamlett WC, Guimarães MADBV, Morini AC, Araújo KPC, Cury FS, Souza AFD, Vidane AS, Ambrósio CE, Miglino MA. Morphological Tools for Describing the Male External Genitalia ofSapajus apella. Zoolog Sci 2015; 32:97-104. [DOI: 10.2108/zs140175] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Freitas SHD, Dória RGS, Mendonça FDS, Santos MDD, Engrácia Filho JR, Vidane AS, Marques ATC, Ambrósio CE. Tomographic imaging of fragmented cortical bone heteroimplant and methylmethacrylate in segmental bone defect of rabbit tibia. Acta Cir Bras 2014; 29:794-800. [PMID: 25517492 DOI: 10.1590/s0102-86502014001900005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/20/2014] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To evaluate the performance of composites consisting of fragmented cortical bone heteroimplant in association with methylmethacrylate preserved in 98% glycerin, in segmental bone defect of rabbit tibia medial metaphysis. METHODS In this study were used twelve adult New Zealand rabbits, divided into three groups of four animals each: G30 (30 days), G60 (60 days) and G90 (90 days). The bone defects previously created in the tibia were filled with composites and both were evaluated by cone-beam computed tomography, immediately after surgery and after 30, 60, and 90 days. RESULTS The composites fulfilled and remained in the sites of bone defects in all cases and were not registered signals of infection, migration or rejection. CONCLUSIONS The implanted composites promoted the bone defects repair without signals of infection and/or rejection. The composites are one more option for bone defects repair.
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Vidane AS, Elias MZJ, Cardoso JMM, Come JASS, Harun M, Ambrósio CE. Incidência de fraturas em cães e gatos da cidade de Maputo (Moçambique) no período de 1998-2008. CIÊNCIA ANIMAL BRASILEIRA 2014. [DOI: 10.1590/1089-6891v15i424279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
As fraturas representam o principal problema ortopédico na clínica de pequenos animais. O estudo de 333 casos em cães, e 37 em gatos diagnosticados nas principais unidades de atendimento veterinário da cidade de Maputo no período de 1998 a 2008 foi levado a cabo para analisar a frequência das fraturas. A maior incidência de fraturas foi registrada em animais com idade igual ou inferior a 2 anos (55,68%). Em ambas as espécies, os machos (58,38%) estiveram mais envolvidos em fraturas que as fêmeas. O esqueleto apendicular foi o mais acometido com 91,59% (cães) e 75,66% (gatos) do total de fraturas, sendo o fêmur [35,74% (cães) e 35,14% (gatos)] singularmente o mais envolvido em todas as espécies seguido pela tíbia e fíbula. Os atropelamentos por veículos motorizados foram responsáveis pela maior parte das fraturas, contudo, a frequência por agressão humana é bastante preocupante. Não há evidência da distribuição sazonal dos casos registrados.
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Lessa TB, Carvalho RC, Spagnolo JD, Silva LCLCD, Cortopassi SRG, Ambrósio CE. Laparoscopic guided local injection in the X-linked muscular dystrophy mouse (mdx) diaphragm. An advance in experimental therapies for Duchenne Muscular Dystrophy. Acta Cir Bras 2014; 29:715-20. [PMID: 25424291 DOI: 10.1590/s0102-86502014001800004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 09/15/2014] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To investigate the development of a laparoscopy technique for local injection into the X-linked muscular dystrophy (mdx) diaphragm. METHODS It was used 10 mice Balb/C57 and 5 mdx mice and three differents decubitus type were tested: the right lateral, supine, and supine decubitus with 20 degrees elevation of the forelimb. Abdominal caudal face and the 10 intercostal space were tested as spot to introduce the needle into the diaphragm. RESULTS Supine position with elevation of 20 degrees forelimb and the 10th intercostal space are the beneficial position to apply a local injection. CONCLUSION It was proved to be possible to perform the laparoscopy technique in the X-linked muscular dystrophy diaphragm and this requires a specific position and technique during the surgery.
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Brolio MP, Cima DS, Miglino MA, Ambrósio CE. Histological comparison of the smooth uterine muscle of healthy golden retriever bitches, carriers of the progressive muscular dystrophy (GRMD) gene, and GRMD-affected bitches. Anim Reprod Sci 2014; 150:56-61. [PMID: 25200710 DOI: 10.1016/j.anireprosci.2014.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 07/25/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022]
Abstract
There is evidence to suggest that weakness of the pelvic and/or uterine musculature may negatively affect the obstetric performance of women who carry the gene for Duchenne muscular dystrophy (DMD). The golden retriever dog is the ideal animal model for preclinical studies of progressive muscular dystrophy, and this model is referred to as "golden retriever muscular dystrophy (GRMD)". This study evaluated and compared the histopathological aspects of the uterine muscle of eleven dogs: health, n=4; carriers of GRMD gene, n=5; and affected females, n=2. The obtained results showed that the uterine muscle of healthy dogs was exclusively composed of type III collagen, while a predominance of type I collagen and small amounts of type III were observed in the uterine muscle of the carriers. The myometrium of the affected bitches showed small quantities of both collagen types. The differences noted in the three evaluated groups suggest that female carrier and those individuals affected by muscular dystrophy had collagen alteration and muscle fiber commitment in the uterine muscle, a deficiency which could directly influence the composition and function of this tissue. In addition, this information is highly relevant to the reproductive management of these animals. This data open important venues for translate reproductive protocols for women, who carry the dystrophin gene.
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Gonçalves NN, Ambrósio CE, Piedrahita JA. Stem Cells and Regenerative Medicine in Domestic and Companion Animals: A Multispecies Perspective. Reprod Domest Anim 2014; 49 Suppl 4:2-10. [DOI: 10.1111/rda.12392] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 07/14/2014] [Indexed: 12/18/2022]
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Cury FS, Favaron PO, Ambrósio CE. Placentation in Coendou prehensilis (Rodentia, Erethizontidae). Placenta 2014. [DOI: 10.1016/j.placenta.2014.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lessa TB, de Abreu DK, Rodrigues MN, Brólio MP, Miglino MA, Ambrósio CE. Morphological and ultrastructural evaluation of the golden retriever muscular dystrophy trachea, lungs, and diaphragm muscle. Microsc Res Tech 2014; 77:857-61. [DOI: 10.1002/jemt.22408] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/30/2014] [Accepted: 07/13/2014] [Indexed: 12/23/2022]
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Lima JMDN, Santos AC, Viana DC, Bertassoli BM, Lobo LM, Oliveira VC, Briani DC, Costa GM, Assis-Neto AC, Ambrósio CE, Carvalho AF, Mançanares CAF. Morphological study of the male genital organs of Gracilinanus microtarsus. BRAZILIAN JOURNAL OF VETERINARY RESEARCH AND ANIMAL SCIENCE 2013. [DOI: 10.11606/issn.1678-4456.v50i6p447-456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lobo LM, Dos Santos AC, Rosa RA, Ambrósio CE, Briane DC, Costa GM, De Carvalho AF, Mançanares CAF. Estudo macroscópico do aparelho digestório de Gracilinanus microtarsus (Wagner, 1842) (Mammalia: Didelphidae). BIOTEMAS 2013. [DOI: 10.5007/2175-7925.2014v27n1p109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Cury FS, Censoni JB, Ambrósio CE. Técnicas anatômicas no ensino da prática de anatomia animal. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013000500022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A preocupação quanto a conservação de peças anatômicas existe a mais de 5 mil anos, pois o uso de peças cadavéricas são indispensáveis para o ensino, contribuindo com a melhora das habilidades aplicativas, assimilativas e compreensivas da disciplina. Esse trabalho propõe maior utilização das técnicas apresentadas em laboratórios de anatomia, visando abolir o uso do formol como conservante, permitindo um ambiente agradável para a prática da relação ensino-aprendizagem. Para isso foram utilizadas quatro técnicas anatômicas, a criodesidratação, glicerinação, injeção de látex e injeção de vinilite seguido de corrosão, que foram executadas utilizando cães, gatos e órgãos provenientes de doações. Com a criodesidratação e glicerinação os materiais anatômicos ficaram consideravelmente mais leves do que eram quando mantidos em formol, mantendo-se inodoros, diferente do evidenciado na utilização de formol e outros conservantes. As estruturas de estudo das peças ficaram intactas, de fácil visualização e o armazenamento passou a ser feito em caixas fechadas sem qualquer tipo de liquido, mantendo-se assim por até 3 anos. As técnicas de injeção de látex e vinilite seguido de corrosão mostraram total eficiência preenchendo os sistemas injetados, podendo visualizar as ramificações e todo caminho percorrido no sistema circulatório. As quatro técnicas anatômicas estudadas nesse trabalho mostraram ser suficientes para atender as necessidades dos estudantes quanto ao estudo da anatomia, devido à perfeita evidenciação de estruturas externas e internas dos animais.
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Roballo KCS, Ercolin ACM, Casals JB, Pieri NCG, Barreto RSN, Illera MJ, Martins DS, Miglino MA, Ambrósio CE. Domestic carnivore's development: detection of Oct-4, a pluripotency marker, in pharyngeal arches. Reprod Domest Anim 2013; 48:e41-3. [PMID: 23379423 DOI: 10.1111/rda.12147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 01/02/2013] [Indexed: 12/17/2022]
Abstract
Very few carnivore's embryology is reported mainly restricted to old literature without new technique analyses. Also, their development focuses on pharyngeal arches and stem cell sources and the high capacity for differentiation from those cells to generate embryonic tissue. We aimed to use immunohistochemistry to prove the potentiality of these stem cell niches. The results were to highlight the timetable for the development of dogs and cats, the proper formation of pharyngeal arches and the description of these cells on first and second arches since 17-25 days of pregnancy. After that, the differentiation process is reduced.
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De Barros MA, Panattoni Martins JF, Samoto VY, Oliveira VC, Gonçalves N, Mançanares CAF, Vidane A, Carvalho AF, Ambrósio CE, Miglino MA. Marsupial morphology of reproduction: South America opossum male model. Microsc Res Tech 2013; 76:388-97. [PMID: 23362127 DOI: 10.1002/jemt.22178] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/03/2013] [Accepted: 01/03/2013] [Indexed: 11/08/2022]
Abstract
This study aims to describe the morphology of Didelphis sp. male genital organs (penis, testes, epididymis, ductus deferens, prostate, and bulbourethral gland). Ten male animals were used, eight for macroscopic and light microscopy analysis, and two for scanning electron microscopy. The testes and epididymis showed similarity to other eutherian mammals. The bifid penis showed the urethra ending in the medial region where the bifurcation begins, occurring in each segment extension of the urethral groove until the beginning of the glans. Histologically, the penis consists of a cavernous and spongy body, covered by stratified squamous epithelium with loose connective tissue. The urethra was lined by transitional stratified epithelium. In the prostate, prostatic segments were found consisting of tubular glands in a radial arrangement around the urethra, coated externally by a dense connective tissue associated with a relatively thick layer of smooth muscle arranged in two layers that surround the glandular tissue. The animals had three pairs of bulbourethral glands placed at the membranous and cavernous urethra junction with descending and parallel excretory ducts ending caudally in the urethral lumen.
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Lessa TB, da Fonseca ET, de Abreu DK, Rodrigues MN, Bertassoli BM, de Oliveira e Silva FM, Ambrósio CE. Diaphragm morphology of guinea pig (Cavia porcellus). Microsc Res Tech 2013; 76:316-20. [PMID: 23334933 DOI: 10.1002/jemt.22169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 12/13/2012] [Indexed: 11/06/2022]
Abstract
The diaphragm is the main respiratory muscle. Along with other respiratory muscles, the diaphragm is responsible for the muscular contraction that generates the respiratory cycle and, as a consequence, the gaseous interchanges in the lungs. Guinea pigs (Cavia porcellus Linnaeus 1758) are largely used as experimental animals in many biology applications due to their easy management, low cost, and docile behavior. As the diaphragm exerts important effects on lung physiology and function, this study aimed at investigating the morphological characteristics of the muscle, through macroscopic, microscopic, and scanning electron microscopy to add reference data for future studies. We observed a "U"-shaped tendineous center and its morphology was similar to other mammals. These results cooperate with the descriptive and comparative anatomy of mammals, besides can be used as control data for areas of surgery and stem cells.
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Fonseca ETD, Mançanares ACF, Ambrósio CE, Miglino MA. Review point on neural stem cells and neurogenic areas of the central nervous system. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojas.2013.33036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gonçalves NJN, Bressan FF, Souza A, Martins DS, Miglino MA, Meirelles FV, Perecin F, Ambrósio CE. Canine Fibroblasts Expressing Human Transcription Factors: What is in the Route for the Production of Canine Induced Pluripotent Stem Cells. Reprod Domest Anim 2012; 47 Suppl 6:84-7. [DOI: 10.1111/rda.12002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Meireles WA, Bergqvist RR, Conrado AV, Trotta MDR, Ambrósio CE. AVALIAÇÃO MORFOLÓGICA DO SISTEMA REPRODUTOR MASCULINO DE Panthera tigris. CIÊNCIA ANIMAL BRASILEIRA 2012. [DOI: 10.5216/cab.v13i4.14346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Lessa TB, Carvalho RC, Franciolli ALR, de Oliveira LJ, Barreto R, Feder D, Bressan FF, Miglino MA, Ambrósio CE. Muscle reorganisation through local injection of stem cells in the diaphragm of mdx mice. Acta Vet Scand 2012; 54:73. [PMID: 23231953 PMCID: PMC3537552 DOI: 10.1186/1751-0147-54-73] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 12/05/2012] [Indexed: 12/22/2022] Open
Abstract
Background The diaphragm is the major respiratory muscle affected by Duchenne muscular dystrophy (DMD) and is responsible for causing 80% of deaths. The use of mechanical forces that act on the body or intermittent pressure on the airways improves the quality of life of patients but does not prevent the progression of respiratory failure. Thus, diseases that require tissue repair, such as DMD, represent a group of pathologies that have great potential for cell therapy. The application of stem cells directly into the diaphragm instead of systemic application can reduce cell migration to other affected areas and increase the chances of muscle reorganisation. The mdx mouse is a suitable animal model for this research because its diaphragmatic phenotype is similar to human DMD. Therefore, the aim of this study was to assess the potential cell implantation in the diaphragm muscle after the xenotransplantation of stem cells. Methods A total of 9 mice, including 3 control BALB/Cmice, 3 5-month-old mdx mice without stem cell injections and 3 mdx mice injected with stem cells, were used. The animals injected with stem cells underwent laparoscopy so that stem cells from GFP-labelled rabbit olfactory epithelium could be locally injected into the diaphragm muscle. After 8 days, all animals were euthanised, and the diaphragm muscle was dissected and subjected to histological and immunohistochemical analyses. Results Both the fresh diaphragm tissue and immunohistochemical analyses showed immunopositive GFP labelling of some of the cells and immunonegativity of myoblast bundles. In the histological analysis, we observed a reduction in the inflammatory infiltrate as well as the presence of a few peripheral nuclei and myoblast bundles. Conclusion We were able to implant stem cells into the diaphragm via local injection, which promoted moderate muscle reorganisation. The presence of myoblast bundles cannot be attributed to stem cell incorporation because there was no immunopositive labelling in this structure. It is believed that the formation of the bundles may have been stimulated by cellular signalling mechanisms that have not yet been elucidated.
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Da Silva LCS, Lessa TB, Santos PRDS, Rici REG, Bombonato PP, Ambrósio CE. ARQUITETURA DA ÁRVORE BRÔNQUICA NO SAGUI-DE-TUFO-PRETO: UM MODELO ANIMAL EXPERIMENTAL PARA LESÕES DO SISTEMA RESPIRATÓRIO. ARCHIVES OF VETERINARY SCIENCE 2012. [DOI: 10.5380/avs.v17i4.24137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
O sagui-de-tufo-preto (Callithrix penicillata), bem como outros representantes do gênero Callithrix, possui uma grande importância na área da pesquisa, principalmente em estudos biomédicos. Entretanto existe ainda uma carência em pesquisas básicas, tais como aquelas que abarcam aspectos de sua anatomia e de sua fisiologia. Considerando a escassez de informações acerca da morfologia do sistema respiratório em saguis da espécie Callithrix penicillata, objetivou-se neste estudo descrever os aspectos histológicos e ultraestruturais da traquéia, dos brônquios e do pulmão destes animais por meio do uso da microscopia eletrônica de varredura (MEV) e da microscopia de luz. Para a avaliação foram utilizados cinco espécimes adultos, 3 fêmeas e 2 machos, que vieram a óbito por causas naturais. Na MEV da traquéia e brônquio observaram-se uma superfície densa de capilares salientes, a cartilagem hialina em formato de “C” e o feixe de músculo liso disposto em formato helicoidal. Já no tocante aos pulmões houve a observação das mesmas estruturas típicas de um pulmão de mamífero. Na microscopia de luz tanto para a traquéia, brônquios e pulmões as estruturas foram similares às já descritas para demais espécies de primatas não-humanos. Os dados obtidos nesta pesquisa elucidam a morfologia histológica e ultraestrutural da traquéia, brônquios e pulmões do sagui-de-tufo-preto (Callithrix penicillata). Servindo assim de subsídio para estudos de anatomia comparada bem como para o conhecimento acerca da morfologia de tal espécie de primata não-humano.
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Tavares Schäfer B, Malavasi CE, Favaron PO, Ambrósio CE, Miglino MA, Ferreira De Amorim A, Grassi Rici RE. Morphological observations of ampullae of lorenzini in Squatina guggenheim and S. occulta (Chondrichthyes, Elasmobranchii, Squatinidae). Microsc Res Tech 2012; 75:1213-7. [PMID: 22488878 DOI: 10.1002/jemt.22051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 03/11/2012] [Indexed: 11/08/2022]
Abstract
We have conducted a morphological study of the ampullae of Lorenzini on two shark species from Squatina Genus. In both species, S. guggenheim and S. occulta, the ampullae were observed like small pores scattered in the head region similar to other species of the Chondrichthyes Class. However, differently of the other species a greatest density of ampullae of Lorenzini was observed along of the body surface. After fixation using 10% formaldehyde, the ampullae were removed and processed for light and scanning electron microscopy. Macroscopically, the two shark species differed by the presence of dorsal spines that appeared from the head to the first dorsal fin in S. guggenheim and were absent in S. occulta. Microscopically, there were no differences between the ampullae of Lorenzini channels in these two species. The wall of the ampulla was formed by a simple squamous epithelium. Bands of connective tissue, hyaline cartilage and collagen fibers were found between the ampulla and the skeletal striated muscle layer. Nerve branches responsible for conducting signal pulses to the central nervous system were visible between the muscle and connective tissue layers. Using scanning electron microscopy and histological analysis, we found that the channels were twisted and positioned parallel to the skin. The inside of the channels contained a large amount of a gelatinous secretion composed by polysaccharides. Therefore, we conclude that the morphological combination of extended distribution of the ampullae of Lorenzini and the body shape may represent an adaptation of these species to their way of life.
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Rici REG, Alcântara D, Fratini P, Wenceslau CV, Ambrósio CE, Miglino MA, Maria DA. Mesenchymal stem cells with rhBMP-2 inhibits the growth of canine osteosarcoma cells. BMC Vet Res 2012; 8:17. [PMID: 22356869 PMCID: PMC3307475 DOI: 10.1186/1746-6148-8-17] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 02/22/2012] [Indexed: 01/18/2023] Open
Abstract
Background The bone morphogenetic proteins (BMPs) belong to a unique group of proteins that includes the growth factor TGF-β. BMPs play important roles in cell differentiation, cell proliferation, and inhibition of cell growth. They also participate in the maturation of several cell types, depending on the microenvironment and interactions with other regulatory factors. Depending on their concentration gradient, the BMPs can attract various types of cells and act as chemotactic, mitogenic, or differentiation agents. BMPs can interfere with cell proliferation and the formation of cartilage and bone. In addition, BMPs can induce the differentiation of mesenchymal progenitor cells into various cell types, including chondroblasts and osteoblasts. The aim of this study was to analyze the effects of treatment with rhBMP-2 on the proliferation of canine mesenchymal stem cells (cMSCs) and the tumor suppression properties of rhBMP-2 in canine osteocarcoma (OST) cells. Osteosarcoma cell lines were isolated from biopsies and excisions of animals with osteosarcoma and were characterized by the Laboratory of Biochemistry and Biophysics, Butantan Institute. The mesenchymal stem cells were derived from the bone marrow of canine fetuses (cMSCs) and belong to the University of São Paulo, College of Veterinary Medicine (FMVZ-USP) stem cell bank. After expansion, the cells were cultured in a 12-well Transwell system; cells were treated with bone marrow mesenchymal stem cells associated with rhBMP2. Expression of the intracytoplasmic and nuclear markers such as Caspase-3, Bax, Bad, Bcl-2, Ki-67, p53, Oct3/4, Nanog, Stro-1 were performed by flow citometry. Results We evaluated the regenerative potential of in vitro treatment with rhBMP-2 and found that both osteogenic induction and tumor regression occur in stem cells from canine bone marrow. rhBMP-2 inhibits the proliferation capacity of OST cells by mechanisms of apoptosis and tumor suppression mediated by p53. Conclusion We propose that rhBMP-2 has great therapeutic potential in bone marrow cells by serving as a tumor suppressor to increase p53 and the pro-apoptotic proteins Bad and Bax, as well as by increasing the activity of phosphorylated caspase 3. Study design Canine bone marrow mesenchymal stem cells associated with rhBMP2 in canine osteosarcoma treatment: "in vitro" study
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Fadel L, Viana BR, Feitosa MLT, Ercolin ACM, Roballo KCS, Casals JB, Pieri NCG, Meirelles FV, Martins DDS, Miglino MA, Ambrósio CE. Protocols for obtainment and isolation of two mesenchymal stem cell sources in sheep. Acta Cir Bras 2012; 26:267-73. [PMID: 21808838 DOI: 10.1590/s0102-86502011000400004] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 03/18/2011] [Indexed: 12/25/2022] Open
Abstract
PURPOSE To evaluate different protocols to isolate stem cells from ovine umbilical cord blood and adipose tissue. METHODS There were used 5 samples of umbilical blood and 5 samples of perirenal adipose tissue from 10 female sheep. All the samples were obtained through surgery, to harvest aseptic samples. There were used 3 protocols for obtainment and culture of umbilical cord blood stem cells and 4 protocols for ovine adipose tissue stem cells. RESULTS It was possible to observe only one successful protocol for the obtainment of umbilical cord blood stem cells. When analyzing the techniques used to obtain adipose tissue stem cells, only one of the methods was effective as well. Through colony forming unit assay, there were obtained 58 colonies of cells after seven days in culture. Flow citometry tests revealed the cells were positive to CD44 and exhibited negative reaction to CD38, CD45, CD41/61. These cells showed a growth curve with very well defined phases LOG, LAG and PLATEAU. This phases are typically seem in mesenchymal stem cells growth curves. CONCLUSIONS The isolation and culture of mesenchymal stem cells from ovine umbilical cord blood are complex and request more detailed assays. Stem cells from fat tissue sheep showed mesenchymal characteristics, according to their cell growth curve, ability to origin colonies of fibroblastoid cells and positive reactivity with the antibody CD44 by flow citometry.
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Abreu DK, Rodrigues EA, Monteiro JM, Franciolli AL, Costola-Souza C, Roballo KC, Ambrósio CE, Miglino MA. Estudo microscópico e macroscópico, com enfoque radiográfico e de alizarina, no desenvolvimento embrionário e fetal de gatos domésticos (Felis catus) em diferentes idades gestacionais. PESQUISA VETERINARIA BRASILEIRA 2011. [DOI: 10.1590/s0100-736x2011001300010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
O gato doméstico (Felis catus) foi nomeado por Carolus Linnaeus em seu livro Systema Naturae, em 1798. A família Felidea apresenta muita semelhança morfológica com os felinos selvagens. O estudo da embriologia do gato doméstico é de grande valia, uma vez que, é considerado um importante modelo animal quando comparado aos gatos selvagem em extinção, especialmente relacionado às pesquisas sobre biologia reprodutiva. Este trabalho objetivou análisar e comparar as fases embrionárias de quatro embriões e um feto de felinos domésticos. Nos embriões com idade gestacional estimada em 17 dias (0,5cm CR) podemos observar pela análise macroscópica a presença de dilatação rostral correspondente ao prosencéfalo, o local placóide do cristalino, a flexura cervical, os quatro arcos faríngeos com os sulcos que o dividem, a proeminência cardíaca, o indício do brotamento do membro pélvico, além da presença de somitos. Na região caudal do embrião, visualizamos a curvatura cranio-caudal, permitindo ao mesmo uma posição em formato de "C". Nos embriões com idade gestacional estimada em 22 dias (1,2cm CR), na análise macroscópica foi visualizado o prosencéfalo, vesícula óptica com pigmentação da retina, vesícula ótica, quarto ventrículo, fígado, membros torácicos e pélvicos com discreta distinção dos dígitos e vascularização superficial. Nos embriões com idade gestacional estimada em 25 dias (1,5cm CR) notamos a presença do prosencéfalo e mesencéfalo, a curvatura cervical pronunciada, vesícula óptica com forte pigmentação da retina, vesícula ótica, membros pélvicos e torácicos bem desenvolvidos, com distinção dos dígitos e fígado bem pronunciado. Os fetos com idade gestacional estimada em 52 dias (10cm CR) possuem estruturas internas e externas facilmente identificadas em animais adultos. Com relação às estruturas ósseas notamos que as mesmas não apresentam nenhuma epífise óssea formada, sendo visíveis somente as diáfises ósseas. Na análise microscópica, o embrião de idade gestacional de 19 dias (0,9cm CR) revelou a presença do rostro, cavidade oral com lábio superior e inferior, cavidade nasal, olho e a abertura do 4º ventrículo encefálico, esôfago, coração com átrio e ventrículo, pulmão, fígado, crista mesonéfrica, gônada primitiva, estômago, broto do membro torácico, coluna vertebral e a medula espinhal em formação. Esse trabalho é de grande importância para o estudo da morfologia externa e interna de gatos domésticos, principalmente no que diz respeito ao desenvolvimento ósseo e articular, considerando as alterações que podem ou não ser promovidas pelo uso de terapias medicamentosas ou celulares durante o desenvolvimento embrionário e fetal.
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Casals JB, Godoy NCP, Cury FS, Paskoski LB, Oliveira MF, Martins DDS, Figueiredo Pessôa LVD, Miglino MA, Ambrósio CE. Descrição macroscópica da musculatura dos membros do Tupinambis merianae. BIOTEMAS 2011. [DOI: 10.5007/2175-7925.2012v25n1p103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Franco de Oliveira M, Favaron PO, Ambrósio CE, Miglino MA, Mess AM. Chorioallantoic and yolk sac placentation in Thrichomys laurentinus (Echimyidae) and the evolution of hystricognath rodents. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2011; 318:13-25. [DOI: 10.1002/jez.b.21428] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 06/09/2011] [Accepted: 06/14/2011] [Indexed: 11/06/2022]
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