PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Martins D.S., Wenceslau C.V., Vieira E., Franciolli A.L.R., Ambrósio C.E., Carvalho A.F. & Miglino M.A. 2012. [Identification of mesenchymal progenitor niches from liver of embryo and fetuses of canines: a source of stem cells for cell therapy.] Identificação do nicho de progenitores mesenquimais no fígado de embriões e fetos caninos: uma fonte de células-tronco para terapia celular. Pesquisa Veterinária Brasileira 32(Supl.1):15-20. Departamento de Zootecnia, Faculdade de Zootecnia e Engenharia de Alimentos, USP, Av. Duque de Caxias Norte 225, Pirassununga, SP 13635-900, Brazil. E-mail: daniele@usp.br Stem cells (SC) derived from fetal tissues (FT) were the most recent discoveries among the SC, and lately had demonstrated broad therapeutic potential; the FT from the fetal liver (FL) presents great therapeutic potential. This organ during the fetal period in mammals acts as a transient hematopoietic niche, being the main organ responsible for hematopoiesis in the fetus, and contribute to the formation of permanent niche in the adult bone marrow, thus can be considered a niche for mesenchymal stem cells (MSC) and parents. However, little is known about the location of these cells in FF, so the present study aims to identify the niche of mesenchymal progenitors in FF and dogs in order to contribute to the techniques of cell isolation and extraction. Together was performed to verify the expression of the transcription factor Oct-3/4 of the protein and DNA polymerase delta (PCNA). For the analysis of five embryos were used and 11 canine fetuses with gestational ages ranging from 25-60 days. The results elucidated from 25 days of gestation showed the FF is bulky and composed of all the typical structures, among them the portal triad, bile ducts and hepatic artery branches. With 30 days of gestation were identified the first requirements of mesenchymal progenitors (MP) at 60 days while the niches were completely formed with location similar to adult liver (AL). However, cells immunoreactives for Oct-3/4 were not identified, therefore, point out that the FL is a source of PM, presenting as an alternative for therapeutic purposes as well as for studying the developmental biology of MSC and parents.

• Liver dogs stem cells fígado caninos células-tronco

Abstract in Portuguese:

RESUMO.- Martins D.S., Wenceslau C.V., Vieira E., Franciolli A.L.R., Ambrósio C.E., Carvalho A.F. & Miglino M.A. 2012. [Identification of mesenchymal progenitor niches from liver of embryo and fetuses of canines: a source of stem cells for cell therapy.] Identificação do nicho de progenitores mesenquimais no fígado de embriões e fetos caninos: uma fonte de células-tronco para terapia celular. Pesquisa Veterinária Brasileira 32(Supl.1):15-20. Departamento de Zootecnia, Faculdade de Zootecnia e Engenharia de Alimentos, USP, Av. Duque de Caxias Norte 225, Pirassununga, SP 13635-900, Brazil. E-mail: daniele@usp.br As células-tronco (CT) derivadas dos tecidos fetais (TF) foram as mais recentes descobertas entre as CT, e ultimamente tem demonstrado amplo potencial terapêutico, dentre os TF o fígado fetal (FF) apresenta grande potencial terapêutico. Este órgão durante o período fetal em mamíferos é um nicho hematopoético transitório, sendo o principal órgão responsável pela hematopoese no feto, além de contribuir com a formação do nicho definitivo na medula óssea adulta, portanto pode ser considerado um nicho de células-tronco mesenquimais (CTM) e progenitores. No entanto, pouco se sabe sobre a localização destas células no FF, desta forma o presente estudo visa identificar o nicho de CTM e progenitores em FF de cães, a fim de contribuir com as técnicas de isolamento e extração celular. Em conjunto foi realizada a verificação da expressão do fator de transcrição Oct-3/4 e da proteína delta polimerase do DNA (PCNA). Para a análise foram utilizados cinco embriões e 11 fetos caninos com idades gestacionais variando de 25-60 dias. Os resultados elucidaram a partir de 25 dias de gestação o FF apresentou-se volumoso e composto por todas as estruturas típicas, dentre elas a tríade portal, ductos biliares e ramos das artérias hepáticas. Com 30 dias de gestação foram identificados os primeiros sitos de progenitores mesenquimais (PM) enquanto que aos 60 dias os nichos estavam completamente formados com localização semelhante ao fígado adulto (FA). No entanto, células imunopositivas para Oct-3/4 não foram identificadas; sendo assim, destacamos que o FF é uma fonte de PM, apresentando-se como uma alternativa para a utilização terapêutica, bem como para os estudos da biologia do desenvolvimento das CTM e progenitores.

Abstract in English:

ABSTRACT.- Pescador C.A., Bandarra P.M., Antoniassi N.A.B., Santos A.S., Oliveira E.C., Barcellos D.E.S.N. & Driemeier D. 2010. [Methodology used in the evaluation of stillborns and aborted fetuses from swine.] Metodologia aplicada na avaliação de fetos suínos abortados e natimortos. Pesquisa Veterinária Brasileira 30(12):1058-1063. Laboratório de Patologia Veterinária, Faculdade de Agronomia e Medicina Veterinária, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT 78069-900, Brazil. E-mail: capescador@ufmt.br This paper reviews information on necropsies in stillborn and aborted fetuses from swine. Aspects dealt with include sampling collection, necropsy procedures, gross and histopathological findings, some of which are of little or no pathological significance but often observed in the routine diagnostic work and misinterpreted as real or important lesions.

• Methodology stillbirth abortion metodologia natimortos abortos

Abstract in Portuguese:

RESUMO.- Pescador C.A., Bandarra P.M., Antoniassi N.A.B., Santos A.S., Oliveira E.C., Barcellos D.E.S.N. & Driemeier D. 2010. [Methodology used in the evaluation of stillborns and aborted fetuses from swine.] Metodologia aplicada na avaliação de fetos suínos abortados e natimortos. Pesquisa Veterinária Brasileira 30(12):1058-1063. Laboratório de Patologia Veterinária, Faculdade de Agronomia e Medicina Veterinária, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT 78069-900, Brazil. E-mail: capescador@ufmt.br Este artigo revisa dados relativos à realização de necropsia em fetos suínos abortados e natimortos. Aspectos descritos incluem coleta de material, procedimentos de necropsia, achados macroscópicos e histopatológicos alguns dos quais de pouco ou nenhum significado patológico são frequentemente observados numa rotina de diagnóstico e geralmente interpretados erroneamente como lesões reais ou de importância.

Abstract in English:

ABSTRACT.- Cadore G.C., Vogel F.S.F., Sangioni L.A., Pena H.F.J. & Gennari S.M. 2010. [IgM and IgG as markers of infection transplacentary Neospora caninum in bovine fetuses.] IgM e IgG como marcadores da infecção transplacentária por Neospora caninum em fetos bovinos. Pesquisa Veterinária Brasileira 30(7):551-553. Setor de Medicina Veterinária Preventiva (Doenças Parasitárias), Universidade Federal de Santa Maria, Camobi, Santa Maria, RS 97105-900, Brazil. E-mail: fervogel@smail.com The aim of this study was to determine the occurrence of anti-Neospora caninum antibodies in serum samples collected from 260 bovine fetuses, between July 2007 and March 2008, in an abattoir in the municipality of Santa Maria, Rio Grande do Sul, Brazil. An indirect fluorescent antibody test was used to detect anti-N. caninum immunoglobulins G (IgG) and M (IgM), using a cut-off of 1:25. Considering IgG or IgM detection, 15% (39/260) of the samples tested were found positive. Among the positive samples, 38 (97.4%) were positive for IgG and 6 (15.4%) for IgM. However 5 (12.8%) of it were positive for both IgG and IgM. These results are in agreement with the proven ability of N. caninum to fetal infection. IgM testing was few relevant to detect N. caninum transplacental infection through fetal bovine serum analisys.

• Neospora caninum immuno-globulin G and M (IgG and IgM) Imunoglobulinas G e M (IgG e IgM).

Abstract in Portuguese:

RESUMO.- Cadore G.C., Vogel F.S.F., Sangioni L.A., Pena H.F.J. & Gennari S.M. 2010. [IgM and IgG as markers of infection transplacentary Neospora caninum in bovine fetuses.] IgM e IgG como marcadores da infecção transplacentária por Neospora caninum em fetos bovinos. Pesquisa Veterinária Brasileira 30(7):551-553. Setor de Medicina Veterinária Preventiva (Doenças Parasitárias), Universidade Federal de Santa Maria, Camobi, Santa Maria, RS 97105-900, Brazil. E-mail: fervogel@smail.com O objetivo deste estudo foi determinar a ocorrência de anticorpos anti-Neospora caninum em 260 amostras de soro coletadas de fetos bovinos de julho de 2007 a março de 2008, em abatedouro do município de Santa Maria, Rio Grande do Sul, Brasil. Para detecção de anticorpos anti-N. caninum, a técnica de imunofluorescência indireta foi utilizada tanto para a detecção de imunoglobulinas G e M. Amostras com títulos e” 25 foram consideradas positivas. Das 260 amostras testadas, 15% (39/260) foram positivas para anticorpos anti-N. caninum. Destas, em 38 (97,4%) foi detectada a presença de IgG anti-N. caninum e em seis (15,4%) de IgM. Em cinco amostras (12,8%) detectaram-se ambos, IgG e IgM. Os resultados reafirmam a habilidade do N. caninum em determinar infecção fetal. A pesquisa de IgM foi de limitada importância na detecção da infecção via transplacentária em soro fetal bovino.

Abstract in English:

RESUMO.- Lima E.M.M., Silva F.O.C, Rafael E.L.S., Severino R.S., Drummond S.S., Bombonato P.P. & Dianese D.M. 2009. [Arterial vascularization of the thoracic lobes of the thymus in stillborns of the lineage C40.] Vascularização arterial dos lobos torácicos do timo em fetos de suínos da Linhagem C40. Pesquisa Veterinária Brasileira 29(11):863-867. Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, ICC, Ala Sul, Campus Universitário Darcy Ribeiro, Cx. Postal 4508, Brasília, DF 70910-970, Brazil. E-mail: limaemm@unb.br As origens e distribuições das artérias que vascularizaram os lobos torácicos do timo foram estudadas em 30 suínos da linhagem C40, fetos, sendo 12 machos e 18 fêmeas. Os exemplares tiveram o sistema arterial preenchido com solução aquosa de, a 50% de Neoprene Látex, corado e, em seguida foram submetidos à fixação em solução aquosa, a 10%, de formaldeído. Os lobos torácicos do timo foram vascularizados por ramos diretos das artérias torácica interna direita (63,33%) e esquerda (53,33%), subclávia esquerda (3,33%), vertebral esquerda (3,33%), cervical superficial direita (3,33%) e esquerda (3,33%), carótida comum esquerda (3,33%), coronária direita (3,33%) e pelos troncos braquiocefálico (33,33%) e costocervical (3,33%). Observou ainda os ramos indiretos das artérias torácica interna direita (70%) e esquerda (76,67%), subclávia esquerda (23,33%), cervical superficial esquerda (3,33%) e do arco aórtico (6,67%).

• Vascularization lineage C40 fetus

Abstract in Portuguese:

ABSTRACT.- Lima E.M.M., Silva F.O.C, Rafael E.L.S., Severino R.S., Drummond S.S., Bombonato P.P. & Dianese D.M. 2009. [Arterial vascularization of the thoracic lobes of the thymus in stillborns of the lineage C40.] Vascularização arterial dos lobos torácicos do timo em fetos de suínos da Linhagem C40. Pesquisa Veterinária Brasileira 29(11):863-867. Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, ICC, Ala Sul, Campus Universitário Darcy Ribeiro, Cx. Postal 4508, Brasília, DF 70910-970, Brazil. E-mail: limaemm@unb.br The origins and distributions of the arteries that vascularization the thoracic lobes of the thymus, right and left, were studied in 30 swine of the lineage C40, fetus, being 12 males and 18 females. The animals had the arterial system filled with aqueous colored solution in a 50% of Neoprene Latex, and than were fixed in 10% aqueous solution formaldehyde. The thoracic lobes of thymus were vascularization by direct branches of the right (53.33%) and left (63.33%) internal thoracic arteries, left subclavian (3.33%), left vertebral (3.33%), right (3.33%) and left (3.33%) superficial cervical, left common carotid (3.33%), right coronary (3.33%) and brachiocephalic trunk (33.33%) and costocervical trunk (3.33%). The right internal thoracic arteries (70%) and left internal thoracic (76.67%), left subclavian (23.33%), left superficial cervical (3.33%) of the aortic arch (6.67%) provided indirect branches for the correspondent thoracic lobes of the thymus in each side.

Abstract in English:

ABSTRACT.- Pavarini S.P., Sonne L., Antoniassi N.A.B., Santos A.S., Pescador C.A., Corbellini L.G. & Driemeier D. 2008. [Congenital anomalies in aborted bovine fetuses in Southern Brazil.] Anomalias congênitas em fetos bovinos abortados no Sul do Brasil. Pesquisa Veterinária Brasileira 28(3):149-154. Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br Abortion, stillbirth and neonatal death are important causes of production losses to the livestock industry. Abortions caused by congenital anomalies may occur sporadically, or appear in epidemics. This retrospective study was conducted at Laboratory of Veterinary Pathology of Federal University of Rio Grande do Sul, and included 307 cases of bovine abortion submitted for diagnosis from September 2001 to March 2007. Most of them were from southern Brazil. Ten cases (3.25%) of congenital anomalies were seen. The most frequent congenital anomalies were artrogryposis, Amorphous globosus, and cleft palate (palatoschisis). Infectious causes were investigated, but only BVDV infection was detected by immunohistochemistry in one case, which was affected with porencephalia.

• Abortion bovine congenital anomalies

Abstract in Portuguese:

ABSTRACT.- Pavarini S.P., Sonne L., Antoniassi N.A.B., Santos A.S., Pescador C.A., Corbellini L.G. & Driemeier D. 2008. [Congenital anomalies in aborted bovine fetuses in Southern Brazil.] Anomalias congênitas em fetos bovinos abortados no Sul do Brasil. Pesquisa Veterinária Brasileira 28(3):149-154. Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br Abortion, stillbirth and neonatal death are important causes of production losses to the livestock industry. Abortions caused by congenital anomalies may occur sporadically, or appear in epidemics. This retrospective study was conducted at Laboratory of Veterinary Pathology of Federal University of Rio Grande do Sul, and included 307 cases of bovine abortion submitted for diagnosis from September 2001 to March 2007. Most of them were from southern Brazil. Ten cases (3.25%) of congenital anomalies were seen. The most frequent congenital anomalies were artrogryposis, Amorphous globosus, and cleft palate (palatoschisis). Infectious causes were investigated, but only BVDV infection was detected by immunohistochemistry in one case, which was affected with porencephalia.

Abstract in English:

ABSTRACT.- Silva F.O.C., Rafael E.L.S., Severino R.S., Drummond S.S. & Bombonato P.P. 2007. [Arteries of the cervical wolves of the thymus in stillborns hogs of the lineage C40.] Vascularização arterial dos lobos cervicais do timo em fetos de suínos da linhagem C40. Pesquisa Veterinária Brasileira 27(6):246-250. Departamento de Anatomia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, MG 38400-902, Brazil. E-mail: eltonvete@yahoo.com.br The thymus is a lymphoid structure of great importance for young animals, excellently acting on the after-birth development and maintenance of their immunologic ability. It has been shown well-developed from the final phase of the prenatal period through the beginning of puberty, and is the largest lymphoid structure with high lymphopoietic function during that period. The objective was to study the arterial vascularization of the cervical part of the thymus of C40 pigs, to supply morphologic information for this structure in animals that are of economical importance in Brazil, and to furnish subsidies for comparative anatomy. Thirty pig embryos, males and females, were used originating from cases of abortion and natural death. Both sides of the cervical lobes of the thymus were found divided during the fetal phase into cranial and caudal portions, joined by an isthmus and situated along the medial face of the mandibulary glands up to the cranial edge of the first pair of ribs. Characteristic for each side of the thymus vascularization is that the cervical lobes of the left side were found irrigated by Arteria subclavia, A. carotida communis, A. thyreoidea caudalis, A. thyreoidea cranialis, A. thyreoidea cervicalis superficialis, A. laryngea caudalis, and A. laryngea cranialis. The cervical thymus lobes of the right side were irrigated by A. carotida communis, A. thyreoidea caudalis, A. thyreoidea cranialis, A. thyreoidea cervicalis superficialis, A. laryngea caudalis, and A. laryngea cranialis.

• Arteries thymus swine

Abstract in Portuguese:

ABSTRACT.- Silva F.O.C., Rafael E.L.S., Severino R.S., Drummond S.S. & Bombonato P.P. 2007. [Arteries of the cervical wolves of the thymus in stillborns hogs of the lineage C40.] Vascularização arterial dos lobos cervicais do timo em fetos de suínos da linhagem C40. Pesquisa Veterinária Brasileira 27(6):246-250. Departamento de Anatomia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, MG 38400-902, Brazil. E-mail: eltonvete@yahoo.com.br The thymus is a lymphoid structure of great importance for young animals, excellently acting on the after-birth development and maintenance of their immunologic ability. It has been shown well-developed from the final phase of the prenatal period through the beginning of puberty, and is the largest lymphoid structure with high lymphopoietic function during that period. The objective was to study the arterial vascularization of the cervical part of the thymus of C40 pigs, to supply morphologic information for this structure in animals that are of economical importance in Brazil, and to furnish subsidies for comparative anatomy. Thirty pig embryos, males and females, were used originating from cases of abortion and natural death. Both sides of the cervical lobes of the thymus were found divided during the fetal phase into cranial and caudal portions, joined by an isthmus and situated along the medial face of the mandibulary glands up to the cranial edge of the first pair of ribs. Characteristic for each side of the thymus vascularization is that the cervical lobes of the left side were found irrigated by Arteria subclavia, A. carotida communis, A. thyreoidea caudalis, A. thyreoidea cranialis, A. thyreoidea cervicalis superficialis, A. laryngea caudalis, and A. laryngea cranialis. The cervical thymus lobes of the right side were irrigated by A. carotida communis, A. thyreoidea caudalis, A. thyreoidea cranialis, A. thyreoidea cervicalis superficialis, A. laryngea caudalis, and A. laryngea cranialis.