Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 15 de 15
Filtrar
Mais filtros

Intervalo de ano de publicação
1.
Acta sci. vet. (Impr.) ; 41: 01-05, 2013.
Artigo em Inglês | LILACS-Express | VETINDEX | ID: biblio-1457151

Resumo

Background: Tracheal tumors are rare and may cause obstruction of the trachea. The neoplasms most commonly diagnosed in cats are lymphosarcoma, squamous cell carcinomas and adenocarcinomas. Surgical resection may provide a clinical cure for small, benign and localized tumors. For malignant neoplasia, surgery is usually palliative. Tracheal segment excision is an invasive procedure, particularly when the intrathoracic trachea is involved, and this increases the risk of stenosis, surgical suture dehiscence, necrosis and pneumothorax. Intraluminal tracheal stents have been used in dogs with tracheobronchomalacia, presenting a feasible alternative to surgery for the treatment of tracheal lumen obstruction.Case: A 11-year-old male mixed-breed cat was referred to the Veterinary Hospital of the Federal University of Rio Grande do Sul (HCV-UFRGS) with a history of appetite loss, wasting and progressive inspiratory dyspnea, for the last 30 days. The cat presenting with oral breathing. Radiography of the lateral thorax shown a radiopaque area, 1cm in diameter, superimposed in the tracheal region, close to the carina cartilage, at the fourth intercostal space. A tracheoscopy confi rmed the diagnosis of tracheal neoplasia, which was identifi ed as an adenocarcinoma by biopsy and histopathology. Given that surgical resection may result in signifi cant morbidity and consequent mortality, the


Background: Tracheal tumors are rare and may cause obstruction of the trachea. The neoplasms most commonly diagnosed in cats are lymphosarcoma, squamous cell carcinomas and adenocarcinomas. Surgical resection may provide a clinical cure for small, benign and localized tumors. For malignant neoplasia, surgery is usually palliative. Tracheal segment excision is an invasive procedure, particularly when the intrathoracic trachea is involved, and this increases the risk of stenosis, surgical suture dehiscence, necrosis and pneumothorax. Intraluminal tracheal stents have been used in dogs with tracheobronchomalacia, presenting a feasible alternative to surgery for the treatment of tracheal lumen obstruction.Case: A 11-year-old male mixed-breed cat was referred to the Veterinary Hospital of the Federal University of Rio Grande do Sul (HCV-UFRGS) with a history of appetite loss, wasting and progressive inspiratory dyspnea, for the last 30 days. The cat presenting with oral breathing. Radiography of the lateral thorax shown a radiopaque area, 1cm in diameter, superimposed in the tracheal region, close to the carina cartilage, at the fourth intercostal space. A tracheoscopy confi rmed the diagnosis of tracheal neoplasia, which was identifi ed as an adenocarcinoma by biopsy and histopathology. Given that surgical resection may result in signifi cant morbidity and consequent mortality, the

2.
Acta sci. vet. (Impr.) ; 41(supl.1): Pub. 23, 2013. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1372652

Resumo

Background: Tracheal tumors are rare and may cause obstruction of the trachea. The neoplasms most commonly diagnosed in cats are lymphosarcoma, squamous cell carcinomas and adenocarcinomas. Surgical resection may provide a clinical cure for small, benign and localized tumors. For malignant neoplasia, surgery is usually palliative. Tracheal segment excision is an invasive procedure, particularly when the intrathoracic trachea is involved, and this increases the risk of stenosis, surgical suture dehiscence, necrosis and pneumothorax. Intraluminal tracheal stents have been used in dogs with tracheobronchomalacia, presenting a feasible alternative to surgery for the treatment of tracheal lumen obstruction. Case: A 11-year-old male mixed-breed cat was referred to the Veterinary Hospital of the Federal University of Rio Grande do Sul (HCV-UFRGS) with a history of appetite loss, wasting and progressive inspiratory dyspnea, for the last 30 days. The cat presenting with oral breathing. Radiography of the lateral thorax shown a radiopaque area, 1cm in diameter, superimposed in the tracheal region, close to the carina cartilage, at the fourth intercostal space. A tracheoscopy confirmed the diagnosis of tracheal neoplasia, which was identified as an adenocarcinoma by biopsy and histopathology. Given that surgical resection may result in significant morbidity and consequent mortality, the owner chose a palliative treatment without adjuvant therapy for adenocarcinoma until acquisition of the stent, with partial resection of the tumor performed during tracheoscopy. This procedure was performed twice at an interval of three months. After the first endoscopic examination, the patient regained weight and normal behavior. Three months after the second tracheoscopy, signs of labored breathing recurred. At this point, the obstruction was treated with implantation of an intratracheal stent. A nitinol biliary stent, 35 mm in length, 8 mm in diameter, was applied during tracheoscopy without fluoroscopy aid. The cat received postoperative treatment with dexamethasone 0.25 mg.kg­¹ SID for seven days. The patient showed immediate clinical improvement in dyspnea, but retained an episodic cough. After six months, the cat suffered a relapse of dyspnea. Radiographic examination revealed a large area of radiopacity in the region of the tracheal stent, suggesting an increase in size of the tumor, and possible metastasis in the lung parenchyma. The patient underwent repeat tracheoscopy, and almost complete obstruction of the tracheal lumen was found. The cat died during this procedure. Post-mortem examination was requested, which confirmed tracheal obstruction resulting from growth of the tumor, and pulmonary metastasis. Discussion: There are few reports of tracheal neoplasms in cats, because they are uncommon. The diagnosis was based on radiography, tracheoscopy and incisional biopsy. Treatment with surgery involves high morbidity and mortality. For this reason we chose the use of a tracheal stent, although palliative in cases of cancer. Stents are frequently used in humans with malignant tracheal obstruction, but the few reports in the veterinary literature, are focused on dogs presenting with tracheobronchomalacia. In cats, a few cases of tracheal stenosis and tumors have been treated experimentally with stents, which have shown success in reestablishing an airway. In previous reports, the technique has always been carried out with the aid of fluoroscopy. The application of the stent using tracheoscopy alone was efficient. The patient in this report suvived for one year since it diagnosed before near-total obstruction of the trachea occurred. Therefore this was a palliative measure, which allowed the patient a good quality of life while receiving adjuvant therapy when possible or necessary.


Assuntos
Animais , Masculino , Gatos , Traqueia/cirurgia , Neoplasias da Traqueia/veterinária , Doenças do Gato/fisiopatologia , Stents/veterinária
3.
Semina ciênc. agrar ; 32(4): 1513-1526, out.-dez. 2011. graf, tab
Artigo em Português | VETINDEX | ID: biblio-1436606

Resumo

Circovirus Suíno Tipo-2 (CSV-2) é um vírus não-envelopado, DNA fita única circular, classificado na família de Circoviridae, relacionado à Síndrome Multisistêmica do Definhamento de Suínos (SMDS) de leitões. A técnica de Imuno-Histoquímica (IHQ) é aplicada na detecção de antígenos do (CSV-2) em tecido lesionados. Entretanto, suínos infectados com CSV-2 assintomáticos ou com infecções subclínicas podem disseminar o vírus no plantel. A pesquisa de anticorpos contra o CVS-2 em porcos aparentemente saudáveis pode sugerir o risco de ingresso de vírus. Neste trabalho foram investigados antígenos e anticorpos contra CVS-2 de porcos de granjas comerciais de sete e oito mesorregiões de Estado de Gerais de Minas (MG). 32 porcos com idades de cinco a onze semanas que apresentaram sinais clínicos de SMDS foram necropsiados. Antígenos do CVS-2 foram investigados nos porcos sacrificados (grupo I) e amostras de demanda de diagnóstico (grupo II) pela IHQ. 7.60% e mais de 60%do primeiro e segundo grupo, respectivamente, foram positivos para antígeno viral. Em todos, marcação intensa de macrófagos e histiócitos, especialmente nos linfonodos e pulmão, evidenciou antígenos a CVS-2. Em paralelo, 955 amostras de soros de porcos de 35 granjas comerciais de ciclo completo sem sintomatologia clínica de SMDS foram investigadas para a detecção de anticorpos contra o CVS-2 aplicando a técnica de Imunoperoxidase em Monocamada de Células (IPMC). Todos os rebanhos de suínos (100%) apresentaram animais positivos (nível de confiança 90% a 100%) com freqüência de 96,6% de porcos reagentes (nível de confiança 94.7% a 98,6%). Os títulos de anticorpos contra o CVS-2 variou 1:320 (médio) a 1:10.240 (alto). Os resultados sugerem que pelo menos 2,66% e 9% dos porcos das regiões Triângulo Mineiro e Zona da Mata, respectivamente, nesta amostragem poderiam desenvolver SMDS clínica e esta porcentagem alcança 3,35% no total dos soros.


Porcine Circovirus Type 2 (PCV-2) is a non-enveloped circular single stranded DNA virus classified in the Circoviridae family related to post weaning multi systemic wasting syndrome (PMWS) in piglets.Immune-Histochemical (IHC) techniques are applied to detected PCV-2 antigen in the animal tissue injuries. Although, asymptomatic or sub clinic PCV-2 infected pigs could disseminate the virus in the flock. Serologic survey on apparently health pigs could suggest the virus ingression risk. In this work, antigens and antibodies against PCVS-2 in swine from commercial farms of seven and eight mesorregions of Minas Gerais State (MG) were investigated. 32 pigs with ages from five to eleven weeks which presented SMDS clinical signs were submitted to necropsy. PCV-2 antigens were investigated either from sacrificed pigs (Group I) and diagnosis demand samples (Group II) by IHC. 7,60% and more than 60% of the first and second groups, respectively, were positive for viral antigen. In both of them, intense marking of macrophages and histiocytes, especially in the lymph nodes and lung, evidenced antigens to CVS-2. In parallel, Immunoperoxidase Monolayer Assay (IPMA) was applied to antibody against PCV-2 screened in 955 pigs from 35 complete cycle commercial farms from same mesorregions. All pig flocks (100%) presented positive animals (confidence level 90% to 100%) and the frequency of reacting pigs varied 96.6% (confidence level 94,7% to 98,6%). PCV-2 antibody titers ranged 1:320 (medium) to 1:10.240 (high). The results suggest that 2.66% and 9% of pigs from Triângulo Mineiro and Zona da Mata regions respectively, would be able to develop clinical SMDS and that percentage reach 3.35% in the total serum.


Assuntos
Animais , Doenças dos Suínos , Circovirus , Síndrome de Emaciação/veterinária
4.
Tese em Português | VETTESES | ID: vtt-204508

Resumo

A Distrofia Muscular de Duchenne (DMD) é uma doença hereditária ligada ao cromossomo X que tem como principais características a atrofia e fraqueza muscular progressiva, chegando até mesmo ao comprometimento da musculatura cardíaca e respiratória. A ausência e/ou disfunção da proteína distrofina na DMD faz com que qualquer esforço muscular contribua para deterioração do tecido muscular. Portanto, presente estudo avaliou pela primeira vez os niveis de metilação e hidroximetilação global no músculo esquelético de animais portadores e afetados pela DMD e analisou os efeitos do acido ursólico sobre a viabilidade e producao proteina de linhagens celulas musculares isoladas de animais portadores e afetados pela GRMD. As análises dos niveis de metilação e hidroximetilação sugerem que as células musculares de caes portadores apresentam maiores níveis de hidroximetilação, em geral, o que pode estar associado com a estabilidade e capacidade de reparo celular; o tratamento com ácido ursólico in vitro, aumentou a concentração de proteinas sobre as células cultivadas;no entanto apresentou-se tóxico às células cultivadas in vitro quando em baixas concentrações, para animais portadores e afetados com 6 meses de idade. Ainda que ensaio de viabilidade celular demonstrou que o ácido ursólico pode ser tóxico em determinada concentração, quando comparado com o controle, entretanto, a utilização deste componente parece ser favorável às células.


The Duchenne muscular dystrophy (DMD) is a hereditary 'X'-linked wasting muscle disease which is characterized by atrophy and progressive muscle weakness that in later stages affects cardiac and respiratory muscles leading to death. The lack and/or dysfunction of dystrophin in DMD induces muscle injury after each muscles contraction leading severe wasting of the muscle tissue. Therefore, for the first time this study assessed the global levels of methylation levels and hydroxymethylation in skeletal muscle of carrier and affected dogs by DMD. Also, we assessed the effects of ursolic acid on the cell viability and protein production of muscle cells lineages isolated from carrier and affected dogs by DMD. The analysis of global levels of methylation and hydroxymethylation showed that muscle cells from carrier dogs had higher levels of global hydroxymethylation when compared to heir affected counterparts, which may be associated with the cellular stability and repair capacity. Taken together, our results showed that there is a difference on global methylation of DNA the skeletal muscle between carrier and affected dogs by DMD, which can be a new prognostic tool for disease progression. Also, the treatment with ursolic acid in vitro increased protein concentration in cultured cells, however ursolic acid showed to be toxic to muscle cells lineages isolated from carrier and affected dogs by DMD at low concentrations. Although cell viability assay showed that ursolic acid may be toxic in certain concentrations, when compared with the control, however, the use of this component appears to be favorable to the cells.

5.
Pesqui. vet. bras ; 30(12): 1036-1042, 2010. ilus, graf
Artigo em Português | VETINDEX | ID: vti-14258

Resumo

Mediante a revisão dos arquivos das fichas de necropsia do Laboratório de Patologia Animal, Universidade Federal do Mato Grosso do Sul, foram estudados a epidemiologia, o quadro clínico e a patologia de 29 surtos de intoxicação por Brachiaria spp., ocorridos em bovinos de corte, no Mato Grosso do Sul, de março de 1996 a novembro de 2009. Os surtos ocorreram em todas as épocas do ano, tanto na seca quanto na chuva. Em 24 dos 29 surtos o principal sinal clínico foi a fotossensibilização e em cinco o principal sinal foi o emagrecimento progressivo. Dos 24 surtos de fotossensibilização, 11 ocorreram em pastagens de B. decumbens, dois em pastagens mistas de B. decumbens e B. brizantha, um em B. brizantha e em 10 surtos não foi informada a espécie de Brachiaria envolvida. A morbidade variou de 0,2 por cento a 50 por cento e a letalidade de 44,4 por cento a 100 por cento. Nos casos de fotossensibilização o edema de barbela foi o sinal clínico mais encontrado em bovinos, seguido de dermatite com pele espessada no flanco e períneo, retração cicatricial auricular, icterícia, corrimento ocular. crostas auriculares e oculares, e ulcerações na parte ventral da língua. Em dois surtos foram observados sinais nervosos e em um, diarréia. Nas necropsias o fígado estava aumentado de tamanho, amarelado, com padrão lobular aumentado e, ocasionalmente, com áreas esbranquiçadas e deprimidas. Os rins estavam acastanhados e a urina escura. No exame histológico do fígado encontrou-se tumefação e vacuolização de hepatócitos, proliferação de células epiteliais dos ductos biliares, retenção biliar, fibroplasia periportal discreta ou moderada e infiltrado mononuclear periportal. Todos os casos de fotossensibilização apresentaram macrófagos espumosos no parênquima hepático e em 21 foram observados cristais birrefringentes nos ductos biliares. Cinco surtos com emagrecimento progressivo dos bovinos afetados foram diagnosticados em pastagens de B. decumbens. A principal lesão macroscópica foi o fígado aumentado de volume e amarelado. No estudo histológico, as lesões foram semelhantes às observadas nos casos de fotossensibilização, sendo que cristais refringentes nos ductos biliares foram observados em três animais. Conclui-se que B. decumbens é mais tóxica que B. brizantha e que a intoxicação ocorre, principalmente, em bovinos jovens nas diferentes épocas do ano. No entanto, pesquisas são necessárias para determinar as variações no conteúdo de saponinas litogênicas em Brachiaria spp. e as diferenças de resistência/susceptibilidade à intoxicação de bovinos de diferentes idades e raças em diferentes regiões.(AU)


The epidemiology, clinical signs and pathology of 29 outbreaks of spontaneous poisoning by Brachiaria spp. in beef cattle, which occurred from March 1996 to November 2009, in the state of Mato Grosso do Sul, were retrospectively studied. For this, the files of the Veterinary Pathology Laboratory at the Federal University of Mato Grosso do Sul were reviewed. Outbreaks occurred at different times of the year, including dry and rainy seasons. While photosensitization was the main clinical sign in cattle from 24 out of 29 outbreaks, in five of them the main clinical sign was progressive wasting, without photosensitization. Eleven outbreaks of photosensitization occurred in pastures of Brachiaria decumbens, two in mixed pastures of B. decumbens and B. brizantha, and one in B. brizantha. In 10 outbreaks the species of Brachiaria was not informed. Morbidity ranged from 0.2 percent to 50 percent, and fatality rates were between 44.4 percent and 100 percent. In cases of photosensitization brisket edema was the most frequent clinical sign observed. Dermatitis with thickened skin of the flank and perineal region, scar retraction of the ears, jaundice, ocular discharge, crusts in the eyes and ears, and ulceration of the ventral surface of the tongue were also observed. Nervous signs were observed in two cases and diarrhea in one. At necropsy the liver was enlarged, yellowish, with increased lobular pattern, and occasionally with depressed whitish areas. The kidneys were brownish and the urine dark. Upon histological examination of the liver the hepatocytes were swollen and vacuolized. Individual necrosis of hepatocytes, bile duct cell proliferation, biliary retention, and mild to moderate periportal fibrosis were also observed. In all cases foamy macrophages, most in groups, were observed mainly in the centrilobular region. In 21 cattle birefringent crystals were observed within the bile ducts. Five outbreaks of progressive wasting were observed in cattle grazing B. decumbens pastures. The main lesion was an enlarged yellowish liver. Histologic lesions were similar to those observed in cases of photosensitization. Birefringent crystals were observed in the liver of three cases, but foamy macrophages were found in all animals. It is concluded that B. decumbens is more toxic than B. brizantha and that the poisoning occurs at any time of the year. Nevertheless, research is still necessary to determine variations in the saponin content of Brachiaria species and the probable differences on susceptibility/resistance to the poisoning of cattle of different ages, breeds and from different regions.(AU)


Assuntos
Bovinos , Plantas Tóxicas/efeitos adversos , Plantas Tóxicas/intoxicação , Intoxicação por Plantas/epidemiologia , Intoxicação por Plantas/microbiologia , Intoxicação por Plantas/patologia , Intoxicação por Plantas/veterinária
6.
Pesqui. vet. bras ; 28(12): 601-605, Dec. 2008. ilus, tab
Artigo em Inglês | LILACS, VETINDEX | ID: lil-509317

Resumo

Samples of gastric lymph nodes and the stomachs from 24 pigs selected from herds affected by postweaning multisystemic wasting syndrome (PMWS) and sudden death associated with gastric ulcers were studied. Pigs were selected on the basis of unthriftiness, decreased feed intake, and wasting. The stomachs were opened, inverted, and classified into 0-3 score according the severity of the gross lesions present in pars oesophagica (non-glandulargastric mucosa). Selected samples were processed for paraffin embedding and stained with hematoxylin and eosin. Immunohistochemistry using anti-PCV2 (porcine circovírus type 2) antibody, anti-Helicobacter pylori antibody and a wide-spectrum anti-cytokeratin antibody was performed. Gross changes in pars oesophagea were classified according to the severity of lesions as score 3, 2, and 1 in 8, 6, 5 stomachs respectivelly. Microscopically, hyperplastic lymphoid follicles, lymphohistiocytic inflammatory infiltrates and focci of necrosis in the gastric mucosa were common findings. Large amounts of PCV2 antigen were observed in the cytoplasm and nuclei from intralesional cells and debris from the gastric glandular mucosal zone; however, in the fundus, anti-PCV2 immunostaining was restricted to the surface mucosal cells and foveolar compartment. All gastric lymph nodes were positive for PCV2 antigen. Anti-H. pylori immunostaining was seen in eleven cases, mainly in the antrum, on the mucosal surface and foveolar compartment. The association of the anti-PCV2 immunostaining with the glandular mucus-producing cells suggests a role for PCV2 as an additional factor for the swine ulcer development.(AU)


Amostras de linfonodos gástricos e os estômagos de 24 leitões selecionados de rebanhos afetados pela síndrome multissistêmica do definhamento suíno e mortes súbitas por úlceras gástricas foram estudados. Os animais foram seleciona dos por baixa performance, baixo consumo de alimento e desnutrição. Os estômagos foram abertos, invertidos e classificados, conforme a severidade das lesões presentes na pars oesophagica (porção não-glandular da mucosa gástrica). Amostras selecionadas foram processadas por método histológico convencional para coloração de hematoxilina-eosina. Testes imuno-histoquímicos utilizando anticorpos anti-PCV2 (circovírus suíno tipo 2), anti-Helicobacter pylori e anticitoqueratina de largo espectro foram feitos. As alterações macroscópicas na pars oesophagica foram classificadas como de escore 3, 2 e 1 respectivamente em 8, 6 e 5 estômagos. Microscopicamente, foram notados folículos linfóides hiperplásicos, infiltrados linfohistiocitários e focos de necrose na mucosa gástrica. Grandes quantidades de antígeno do PCV2 foram observadas no citoplasma, núcleo e restos necróticos de células intralesionais das glândulas gástricas nas regiões do antro e cárdia; entretanto, na região do fundo, a marcação anti-PCV2 foi restrita às células da superfície mucosa e fossetas gástricas. Todos os linfonodos gástricos foram positivos para PCV2. Coloração anti-H. pylori foi identificada em 11 casos, principalmente, na superfície mucosa e fossetas gástricas no antro. A associação de antígenos PCV2 com células produtoras de muco lesadas na zona glandular gástrica sugere o envolvimento de PCV2 como um fator adicional para o desenvolvimento da úlcera gástrica suína.(AU)


Assuntos
Animais , Úlcera Gástrica , Suínos/virologia , Helicobacter pylori/isolamento & purificação , Circovirus , Síndrome de Emaciação/veterinária , Antígenos
7.
Pesqui. vet. bras ; 28(12): 601-605, 2008. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-394

Resumo

Samples of gastric lymph nodes and the stomachs from 24 pigs selected from herds affected by postweaning multisystemic wasting syndrome (PMWS) and sudden death associated with gastric ulcers were studied. Pigs were selected on the basis of unthriftiness, decreased feed intake, and wasting. The stomachs were opened, inverted, and classified into 0-3 score according the severity of the gross lesions present in pars oesophagica (non-glandulargastric mucosa). Selected samples were processed for paraffin embedding and stained with hematoxylin and eosin. Immunohistochemistry using anti-PCV2 (porcine circovírus type 2) antibody, anti-Helicobacter pylori antibody and a wide-spectrum anti-cytokeratin antibody was performed. Gross changes in pars oesophagea were classified according to the severity of lesions as score 3, 2, and 1 in 8, 6, 5 stomachs respectivelly. Microscopically, hyperplastic lymphoid follicles, lymphohistiocytic inflammatory infiltrates and focci of necrosis in the gastric mucosa were common findings. Large amounts of PCV2 antigen were observed in the cytoplasm and nuclei from intralesional cells and debris from the gastric glandular mucosal zone; however, in the fundus, anti-PCV2 immunostaining was restricted to the surface mucosal cells and foveolar compartment. All gastric lymph nodes were positive for PCV2 antigen. Anti-H. pylori immunostaining was seen in eleven cases, mainly in the antrum, on the mucosal surface and foveolar compartment. The association of the anti-PCV2 immunostaining with the glandular mucus-producing cells suggests a role for PCV2 as an additional factor for the swine ulcer development.(AU)


Amostras de linfonodos gástricos e os estômagos de 24 leitões selecionados de rebanhos afetados pela síndrome multissistêmica do definhamento suíno e mortes súbitas por úlceras gástricas foram estudados. Os animais foram seleciona dos por baixa performance, baixo consumo de alimento e desnutrição. Os estômagos foram abertos, invertidos e classificados, conforme a severidade das lesões presentes na pars oesophagica (porção não-glandular da mucosa gástrica). Amostras selecionadas foram processadas por método histológico convencional para coloração de hematoxilina-eosina. Testes imuno-histoquímicos utilizando anticorpos anti-PCV2 (circovírus suíno tipo 2), anti-Helicobacter pylori e anticitoqueratina de largo espectro foram feitos. As alterações macroscópicas na pars oesophagica foram classificadas como de escore 3, 2 e 1 respectivamente em 8, 6 e 5 estômagos. Microscopicamente, foram notados folículos linfóides hiperplásicos, infiltrados linfohistiocitários e focos de necrose na mucosa gástrica. Grandes quantidades de antígeno do PCV2 foram observadas no citoplasma, núcleo e restos necróticos de células intralesionais das glândulas gástricas nas regiões do antro e cárdia; entretanto, na região do fundo, a marcação anti-PCV2 foi restrita às células da superfície mucosa e fossetas gástricas. Todos os linfonodos gástricos foram positivos para PCV2. Coloração anti-H. pylori foi identificada em 11 casos, principalmente, na superfície mucosa e fossetas gástricas no antro. A associação de antígenos PCV2 com células produtoras de muco lesadas na zona glandular gástrica sugere o envolvimento de PCV2 como um fator adicional para o desenvolvimento da úlcera gástrica suína.(AU)


Assuntos
Animais , Síndrome de Emaciação , Circovirus , Antígenos , Úlcera Gástrica , Helicobacter pylori/isolamento & purificação , Suínos
8.
Pesqui. vet. bras ; 27(2): 75-79, 2007. tab, graf, ilus
Artigo em Inglês | VETINDEX | ID: vti-45

Resumo

This study comprised 12 hearts of Wiedïs black-tufted-ear marmoset, Callithrix kuhlii (Coimbra-Filho 1985), 6 with Wasting Marmoset Syndrome (WMS) and 6 non-affected. Biometry was performed after death. After necropsy, the hearts were weighed, dissected, fixed in 10 percent formalin solution (pH 7.2), and processed for optical microscopy at 5µm sections stained with Haematoxylin-Eosin. Quantitative analysis was performed by stereological techniques. The statistical differences between the biometrical and stereological parameters were assessed by the Mann-Whitney test. The morphometric results showed that WMS causes a significant reduction in body and cardiac weights, and also in the volume density of vessels in those animals. Further studies are necessary to understand some of the results shown here.(AU)


Neste estudo, foram utilizados corações de 12 Sagui-de-Wied, Callitrhix kuhlii (Coimbra-Filho 1985), sendo 6 animais afetados pela SEP e 6 animais normais. Após a morte foi realizada a biometria seguida de necropsia. Os corações foram fixados em formol tamponado a 10 por cento, pesados e dissecados, sendo processados através de técnicas histológicas de rotina para microscopia óptica em cortes de 5µm corados por Hematoxilina-Eosina. As análises quantitativas foram feitas com o uso de técnicas estereológicas. As diferenças estatísticas entre os parâmetros biométricos e estereológicos foram avaliadas usando o test Mann-Whitney. Os resultados encontrados através da morfometria mostraram que a SEP causa uma redução significante do peso tanto corporal quanto do músculo cardíaco, e também uma redução no volume dos vasos nestes animais. Novos estudos são necessários para entender alguns dos resultados mostrados aqui.(AU)


Assuntos
Síndrome de Emaciação/diagnóstico , Miocárdio/metabolismo , Callitrichinae/anatomia & histologia
9.
Pesqui. vet. bras ; 25(1): 39-53, jan.-mar.2005. ilus, tab
Artigo em Português | VETINDEX | ID: vti-3233

Resumo

Descreve-se o primeiro surto de Síndrome Definhante Multissistêmica de Suínos Desmamados (SDMSD) na Região Sudeste do Brasil, no estado do Rio de Janeiro. A enfermidade que afetou principalmente suínos desmamados com idade em torno de 4 meses, levou a morte pelo menos 14 animais. A granja onde o surto ocorreu, tinha péssimas condições sanitárias e de manejo. Clinicamente, a doença caracterizou-se por má condição corporal, pouco desenvolvimento, tosse, taquipnéia, dispnéia, diarréia, ataxia, tremores após estímulo, decúbito e convulsões, com evolução aguda a subaguda. À necropsia, os achados mais importantes foram um aumento de volume de linfonodos e pulmões não-colapsados, com áreas consolidadas, principalmente nos lobos craniais e porção anterior dos lobos médios. O exame histológico revelou, com maior freqüência, infiltração linfo-histiocítica com células sinciciais em linfonodos, baço, placas de Peyer, rim, pulmão e fígado, depleção ou hiperplasia linfóide, bem como pneumonia bronco-intersticial linfo-histiocitária e áreas de broncopneumonia secundária. O diagnóstico firmou-se pela observação dos sintomas e das lesões histológicas típicas e foi confirmado por exame imunohistoquímico e PCR. O estudo teve por objetivo caracterizar os aspectos epidemiológico e clínico-patológico desse surto, já que a mesma tem causado grandes perdas econômicas, diretas ou indiretas, à suinocultura mundial.(AU)


The first outbreak of Postweaning Multisystemic Wasting Syndrome (PMWS) in swine, which occurred in southeastern Brazil, in the state of Rio de Janeiro, is described. The disease, which affects mainly weaned about 4 month-old pigs, caused the death of at least 14 animals. The property, where the outbreak occurred, had inadequate sanitary and management conditions. Clinically the disease was characterized by wasting, poor development, cough, tachypnoea, dispnoea, diarrhoea, ataxia, tremors after stimulation, decubitus and convulsions. The course of the disease was acute or subacute. The most important post-mortem findings were enlarged lymphnodes, non-collapsed lungs, with consolidated areas mainly in the cranial lobes. Histological lesions consisted mainly of lymphohistiocytic infiltration with multinucleate giant cells in lymph nodes, spleen, Peyer's patches, kidney, lung and liver, depletion or lymphoid hyperplasia, as well as lymphohistiocytic interstitial pneumonia and areas of secondary bronchopneumonia. The diagnosis was established through observations of the symptoms and typical lesions, and was confirmed by immunohistochemical examination and PCR. The objective of this study was to characterize the epidemiological, clinical and pathological aspects of the outbreak of PMWS, because of the severe direct or indirect economical losses caused by the disease to the world pig industry.(AU)


Assuntos
Animais , Circovirus/isolamento & purificação , Síndrome de Emaciação/epidemiologia , Síndrome de Emaciação/fisiopatologia , Reação em Cadeia da Polimerase/métodos
10.
São Paulo; s.n; 30/08/2010.
Tese em Português | VETTESES | ID: vtt-5495

Resumo

A síndrome de emagrecimento progressivo (SEP) é responsável por elevada morbidade e mortalidade de calitriquídeos mantidos em cativeiro em diferentes instituições. Essa síndrome representa um desafio aos médicos veterinários por suas características ainda pouco esclarecidas e são poucos os estudos multidisciplinares que visam à avaliação dos diferentes sistemas, como os órgãos linfo-hematopoiéticos. O objetivo foi caracterizar a evolução e duração da SEP, associando os dados clínicos, laboratoriais e anatomopatológicos dos órgãos linfo-hematopoiéticos de saguis naturalmente acometidos por SEP no cativeiro. Foram analisadas as fichas clínicas, necroscópicas e os resultados das amostras de sangue e urina de 47 saguis doentes, Callithrix spp., machos e fêmeas, que foram a óbito devido a SEP e eram provenientes de dois criadouros diferentes do estado de São Paulo. Os fragmentos dos órgãos linfo-hematopoiéticos, intestino delgado e do fígado foram processados e avaliados. Os resultados caracterizaram que a SEP acomete calitriquídeos de espécies diferentes, adultos, sem predisposição sexual, mantidos sob condições estáveis de manejo por em média 42 meses e a duração clínica varia de 41 dias a 1 ano e 7 meses. As características clínicas na fase inicial foram predominantemente sinais gastrintestinais e na fase terminal, sinais gastrintestinais e extra-intestinais. A anemia macrocítica normo ou hipocrômica com policromasia, esferocitose, presença de corpúsculos de Heinz e hemoglobinúria foi a alteração hematológica mais frequente. As lesões dos órgãos linfo-hematopoiéticos foram características de anemia hemolítica ou foram inespecíficas e reacionais caracterizadas por hiperplasia ou depleção das células da medula óssea, baço e linfonodo e lesões degenerativas no fígado. Na SEP, a associação clínica, laboratorial e anatomopatológica possibilitou a caracterização da evolução e duração clínica, da anemia e das alterações dos órgãos linfo-hematopoiéticos, cujas lesões foram consideradas secundárias à desnutrição crônica e progressiva decorrente da severa enterite atrófica


Wasting marmoset syndrome (WMS) causes high morbidity and mortality of marmosets and tamarins kept in captivity in different colonies. WMS challenges the veterinarian due to its unclear and not established features and there are few multidisciplinary studies that carried out an evaluation of different systems, such the lymphohematopoietic system. The aim was described the duration and evolution of illness based on an association of clinical, laboratory and pathological aspects of WMS. Medical record, laboratory data and pathological findings were analyzed of 47 Callithrix spp., males and females, sick marmosets that died due to WMS in two different colonies in São Paulo state. Tissue samples of small intestine, lymphohematopoietc system and liver were histological processed and evaluated. The results showed that WMS affects adult marmosets of different species; there are no sex-related differences, and the marmosets are at least 42 months under similar general management at colony. The clinical duration of WMS is from 41 days to 1 year and 7 months. The clinical features were gastrointestinal symptoms in the beginning and extra-gastrointestinal and gastrointestinal signs in the end. Normochromic or hypochromic macrocytic anemia with polychromasia, spherocytes, Heinz bodies, and hemoglobinuria is the common hematological result. The lymphohematopoietic system lesions were the common findings of hemolytic anemia or unspecific and reacting features such as hyperplasia or depletion of cell numbers of bone marrow, spleen and lymph node, and degenerative lesions of liver. The clinical, laboratory and pathological association allowed the characterization of evolution and duration of the WMS, the anemia and the lesions of lymphohematopoietic organs which lesions were considered secondary to chronic and progressive malnutrition as a result of severe atrophic

11.
Acta sci. vet. (Online) ; 41: 01-05, 2013.
Artigo em Inglês | VETINDEX | ID: vti-480260

Resumo

Background: Tracheal tumors are rare and may cause obstruction of the trachea. The neoplasms most commonly diagnosed in cats are lymphosarcoma, squamous cell carcinomas and adenocarcinomas. Surgical resection may provide a clinical cure for small, benign and localized tumors. For malignant neoplasia, surgery is usually palliative. Tracheal segment excision is an invasive procedure, particularly when the intrathoracic trachea is involved, and this increases the risk of stenosis, surgical suture dehiscence, necrosis and pneumothorax. Intraluminal tracheal stents have been used in dogs with tracheobronchomalacia, presenting a feasible alternative to surgery for the treatment of tracheal lumen obstruction.Case: A 11-year-old male mixed-breed cat was referred to the Veterinary Hospital of the Federal University of Rio Grande do Sul (HCV-UFRGS) with a history of appetite loss, wasting and progressive inspiratory dyspnea, for the last 30 days. The cat presenting with oral breathing. Radiography of the lateral thorax shown a radiopaque area, 1cm in diameter, superimposed in the tracheal region, close to the carina cartilage, at the fourth intercostal space. A tracheoscopy confi rmed the diagnosis of tracheal neoplasia, which was identifi ed as an adenocarcinoma by biopsy and histopathology. Given that surgical resection may result in signifi cant morbidity and consequent mortality, the


Background: Tracheal tumors are rare and may cause obstruction of the trachea. The neoplasms most commonly diagnosed in cats are lymphosarcoma, squamous cell carcinomas and adenocarcinomas. Surgical resection may provide a clinical cure for small, benign and localized tumors. For malignant neoplasia, surgery is usually palliative. Tracheal segment excision is an invasive procedure, particularly when the intrathoracic trachea is involved, and this increases the risk of stenosis, surgical suture dehiscence, necrosis and pneumothorax. Intraluminal tracheal stents have been used in dogs with tracheobronchomalacia, presenting a feasible alternative to surgery for the treatment of tracheal lumen obstruction.Case: A 11-year-old male mixed-breed cat was referred to the Veterinary Hospital of the Federal University of Rio Grande do Sul (HCV-UFRGS) with a history of appetite loss, wasting and progressive inspiratory dyspnea, for the last 30 days. The cat presenting with oral breathing. Radiography of the lateral thorax shown a radiopaque area, 1cm in diameter, superimposed in the tracheal region, close to the carina cartilage, at the fourth intercostal space. A tracheoscopy confi rmed the diagnosis of tracheal neoplasia, which was identifi ed as an adenocarcinoma by biopsy and histopathology. Given that surgical resection may result in signifi cant morbidity and consequent mortality, the

12.
Ci. Rural ; 30(5)2000.
Artigo em Português | VETINDEX | ID: vti-703719

Resumo

Acute myelomonocytic leukemia is described in a 4-year-old female dog. During a two month period it presented anorexia, lethargy and progressive wasting. Laboratory results showed severe anemia and acute renal impairment. An ultrassonographic examination revealed a mesogastric mass. Once the dog did not respond to treatment it was euthanatiized. Macroscopically, deep pallor of mucous membranes, poor body condition and dehydration were detected. Some lymph nodes were swollen and tumoral nodules were observed in the liver, pancreas, regional lymph nodes, spleen and duodenum. The microscopic lesion consisted of neoplastic infiltration of the bone marrow, spleen, liver and lymph nodes. The cells were blastic myeloid cells with scant cytoplasm, round or segmented nucleus, prominent nucleolus and diffuse chromatin pattern. Immunohistochemical stains for NP57 were positive. The tumor was classified as acute myelomonocytic leukemia because of the morphology of the neoplastic cells and the predominance of blastic cells in the bone marrow.


Uma cadela, sem raça definida, de quatro anos apresentou, no período de dois meses, anorexia, emagrecimento progressivo e letargia. Os exames laboratoriais constataram anemia intensa e azotemia e, na ultra-sonografia, observou-se uma massa na região mesogástrica. Após tentativa de tratamento clínico sem resposta, optou-se pela eutanásia. Macroscopicamente, observaram-se acentuada palidez das mucosas, pobre estado nutricional e desidratação. Os linfonodos pré-esternais estavam aumentados e nos lobos esquerdos do fígado, pâncreas, linfonodos regionais, baço e duodeno havia múltiplos nódulos tumorais branco-amarelados. Microscopicamente, na medula óssea, baço, linfonodos e fígado havia infiltração tumoral por células blásticas com pouco citoplasma, núcleo redondo ou chanfrado, nucléolo proeminente e cromatina fina. Havia, também, moderada quantidade de neutrófilos. A imuno-istoquímica da medula óssea utilizando-se o anticorpo NP57 foi positiva. O tumor foi classificado como leucemia mielomonocítica aguda pela massiva proliferação de células neoplásicas compatíveis com a série monocítica e neutrofílica na medula óssea, igualmente em múltiplos órgãos e a relativa imaturidade celular e predominância de blastos na medula óssea.

13.
Artigo em Português | LILACS-Express | VETINDEX | ID: biblio-1475478

Resumo

Acute myelomonocytic leukemia is described in a 4-year-old female dog. During a two month period it presented anorexia, lethargy and progressive wasting. Laboratory results showed severe anemia and acute renal impairment. An ultrassonographic examination revealed a mesogastric mass. Once the dog did not respond to treatment it was euthanatiized. Macroscopically, deep pallor of mucous membranes, poor body condition and dehydration were detected. Some lymph nodes were swollen and tumoral nodules were observed in the liver, pancreas, regional lymph nodes, spleen and duodenum. The microscopic lesion consisted of neoplastic infiltration of the bone marrow, spleen, liver and lymph nodes. The cells were blastic myeloid cells with scant cytoplasm, round or segmented nucleus, prominent nucleolus and diffuse chromatin pattern. Immunohistochemical stains for NP57 were positive. The tumor was classified as acute myelomonocytic leukemia because of the morphology of the neoplastic cells and the predominance of blastic cells in the bone marrow.


Uma cadela, sem raça definida, de quatro anos apresentou, no período de dois meses, anorexia, emagrecimento progressivo e letargia. Os exames laboratoriais constataram anemia intensa e azotemia e, na ultra-sonografia, observou-se uma massa na região mesogástrica. Após tentativa de tratamento clínico sem resposta, optou-se pela eutanásia. Macroscopicamente, observaram-se acentuada palidez das mucosas, pobre estado nutricional e desidratação. Os linfonodos pré-esternais estavam aumentados e nos lobos esquerdos do fígado, pâncreas, linfonodos regionais, baço e duodeno havia múltiplos nódulos tumorais branco-amarelados. Microscopicamente, na medula óssea, baço, linfonodos e fígado havia infiltração tumoral por células blásticas com pouco citoplasma, núcleo redondo ou chanfrado, nucléolo proeminente e cromatina fina. Havia, também, moderada quantidade de neutrófilos. A imuno-istoquímica da medula óssea utilizando-se o anticorpo NP57 foi positiva. O tumor foi classificado como leucemia mielomonocítica aguda pela massiva proliferação de células neoplásicas compatíveis com a série monocítica e neutrofílica na medula óssea, igualmente em múltiplos órgãos e a relativa imaturidade celular e predominância de blastos na medula óssea.

14.
Botucatu; s.n; 31/07/2006. 70 p.
Tese em Português | VETTESES | ID: vtt-4265

Resumo

Vários estudos têm demonstrado a associação entre a maior concentração viral do circovírus suíno tipo 2 (PCV2) detectado por PCR quantitativa com o desenvolvimento de lesões microscópicas típicas da Síndrome da circovirose suína (SCS). Clinicamente, a SCS é caracterizada principalmente pelo emagrecimento progressivo, acompanhado de dispnéia, aumento de tamanho dos linfonodos, palidez e/ou icterícia das mucosas. A diminuição na taxa de crescimento dos leitões acometidos com a síndrome provoca grave prejuízo econômico para o produtor, o que torna a SCS uma das doenças mais importantes para a suinocultura. Assim, com o objetivo de comparar a concentração viral relativa do circovírus suíno (PCV) com o ganho de peso de leitões provenientes de uma granja comercial com SCS, amostras de sangue total, soro e "swab" nasal foram analisadas por PCR em tempo real com SYBR® Green I e PCR para o circovírus suíno tipo 1 (PCV1), sendo posteriormente, comparadas entre si para determinação de qual amostra seria mais apropriada para a utilização na PCR em tempo real com SYBR® Green I. Foram colhidas 128 amostras de sangue total, 128 de soro e 128 de "swab" nasal, as quais foram obtidas de 32 leitões acompanhados na maternidade, creche, recria e crescimento. Através da comparação das concentrações virais relativas do PCV entre as amostras, o sangue total mostrou-se mais apropriado para a PCR em tempo real, seguido do soro. Os "swabs" nasais não foram considerados apropriados para detecção do PCV pela técnica aplicada, pois o PCV detectado pode representar o vírus sendo eliminado nas secreções nasais e/ou uma contaminação do ambiente. Todas as amostras (n = 107) positivas para PCV por PCR em tempo real foram testadas para PCV1 e resultaram negativas


Several studies have shown the association among the largest viral concentration of Porcine circovirus type 2 (PCV2) detected by quantitative PCR with the development of typical microscopic lesions of Postweaning multisystemic wasting syndrome (PMWS). Clinically, PMWS is characterized by the progressive weigh loss, accompanied of dyspnea, enlargement of limph nodes, paleness and/or jaundice of the mucous membranes. The reduce growth rate of the pigs affected with the PMWS cause serious economical damage, making this disease as one of the most important for swine producing area. Like this, with the objective of comparing the relative viral concentration of the PCV with the weight gain of piglets of a commercial farm with PMWS, samples of total blood, serum and nasal swab were analyzed by real time PCR using SYBR® Green I and PCR for the PCV1, and were compared later amongst themselves for determination of which sample would be more appropriate for quantitative PCR. A total of 128 samples of total blood, 128 of serum and 128 of nasal swab were collected, which were obtained of 32 piglets accompanied at the nursery, grower, and finisher stage. After analyses, total blood was shown more appropriate for real time PCR, following by the serum. The nasal swabs were not considered appropriate for quantifications of PCV because detected PCV can represent the virus being eliminated in the nasal secretions and/or an environment contamination. All of the samples (n = 107) positive for PCV in real time PCR were also tested in PCR for PCV1 with negative results. The comparison between viral concentrations in blood or serum samples and the weights of the piglets, a negative correlation was observed

15.
São Paulo; s.n; 09/08/2004. 163 p.
Tese em Português | VETTESES | ID: vtt-5428

Resumo

A síndrome de emagrecimento progressivo (SEP) dos calitriquídeos representa importante causa de morbidade e mortalidade de sagüis mantidas em cativeiro. A etiologia dessa síndrome não está estabelecida e suas principais características são emagrecimento progressivo, diarréia, colite, anemia, paralisia dos membros posteriores e alopecia. Com esse estudo pretende-se responder se a síndrome é um processo de má-absorção ou de desnutrição protéico-calórica primária, caracterizar o quadro histológico intestinal de base e a resposta imunológica tecidual local. Foram estudados três grupos de sagüis: 1) 40 doentes com SEP pertencentes ao criadouro Mucky, 2) 9 controles vivos sadios, 3) 8 necrópsias de controles sem SEP. Foi realizado acompanhamento clínico, exame laboratorial das fezes, teste de absorção de D-xilose, avaliação da composição nutricional e digestibilidade da dieta, estudo anatomopatológico, incluindo avaliação semiquantitativa e análise morfométrica do jejuno de sagüis que foram a óbito naturalmente por SEP e dos controles. Os resultados alcançados permitiram caracterizar o perfil dos animais acometidos no nosso meio; os sinais clínicos maiores e menores da síndrome; identificar esteatorréia; o comprometimento da função digestiva e absortiva do intestino delgado dos sagüis com SEP; caracterizar o quadro histopatológico como uma enterite com atrofia semelhante à doença celíaca humana. A associação dos resultados clínicos, laboratoriais e histológicos permitiu definir a SEP como processo de má-absorção, por perda de superfície absortiva de intestino delgado, decorrente de enterite crônica imunomediada, de padrão celíaco-like que leva a progressiva e grave desnutrição secundária dos animais acometidos


Wasting marmoset syndrome (WMS) is an important cause of morbidity and mortality of marmosets and tamarins kept in captivity. The etiology of this syndrome has not been established and its main features are progressive weight loss, diarrhea, colitis, anemia, hind limb paralysis, and alopecia. The aims of this research were to demonstrate that WMS is a malabsorption process, and to analyze the underlying histological lesion of the intestine and to characterize the local immune response of the small intestine. The sick marmosets (n=40) were compared to live normal controls (n=9) or to necropsied marmosets that died of other diseases than WMS (n=8), regarding clinical follow up, fecal analysis, D-xylose absorption test, evaluation of the nutritional composition and digestibility of the diet, gross and histological examination and morphometric approach of the jejune of wasters and control marmosets. These data revealed general features of WMS under our general captivity conditions, major and minor clinical signs of waster marmosets, impaired absorptive and digestive function of small intestine with steatorrhea and atrophic enteritis similar to celiac disease. The clinical and laboratory data associated with pathology examination demonstrated that WMS is a malabsorption process due to loss of absorptive surface area that results in progressive secondary malnutrition of the waster marmosets. The major immunologic mechanism underlying the celiac-like enteritis of WMS is a T-cell immune mediated response that affects intestine architecture

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA