RESUMO

BACKGROUND: Combined chondroitin sulfate (CS) and glucosamine (GlcN) has been widely used in oral formulations to prevent and treat osteoarthritis. CS is effective for controlling pain in osteoarthritic patients, whereas GlcN can stimulate glycosaminoglycan synthesis, thus reducing extracellular matrix degradation. Although several studies have been published on this topic, the effectiveness of treatment with oral CS and GlcN remains uncertain. The objective of this study was to analyze the progression of experimentally induced osteoarthritis in horses and verify the effectiveness of an oral compound based on CS and GlcN to treat and/or modulate this disease. The study analyzed the metacarpophalangeal joint of the left thoracic limb of 16 horses divided into two groups, with eight horses treated with CS and GlcN in the treated group (GT) and eight untreated horses in the control group (GC). Chondral lesions were induced through arthroscopy, which was defined as time-point zero (T0). Physical, ultrasonographic, and radiographic examinations and synovial fluid biomarkers measurements were performed on days 0, 30, 60, 90, and 120. At the end of the experiment (T4), arthroscopy was performed again to macroscopically evaluate the joints and collect material for microscopic analysis. RESULTS: Significant differences were observed between groups in some evaluated parameters, such as visual lameness assessment, synovial concentrations of prostaglandin E2, and ultrasound examination. However, the GT still presented slightly improved results for joint flexion angle, analysis of lameness using sensors, and histopathological analysis of chondral repair tissue, however, without the statistical significance (p>0.05). CONCLUSIONS: The treatment was considered effective in the clinical modulation of experimental osteoarthritis, with improvement of some parameters in the GT. However, this type of treatment may not be entirely effective to change the catabolic process in articular cartilage and the progressive induced chondral damage.

Assuntos

RESUMO

Racehorses are exposed to repetitive overload during training and competition, causing joint hyperextension, tissue fatigue, and ultimately skeletal failure. Some degree of bone changes, such as sclerosis, are expected in equine athletes, as adaptation to the biomechanical rigors of training and racing. Understanding the imaging characteristics of the equine joint surface and subchondral bone would allow earlier detection of injuries or adaptation, improving prognosis and training programs. This study sought to describe the joint surface structural patterns and the periarticular structures of the third metacarpal bone (MC3). Both forelimbs of eight horses engaged in daily training programs, aged 3-5 years, which were euthanized for reasons unrelated to the metacarpophalangeal (MCP) joints, were collected. Specimens were evaluated through macroscopic inspection, radiography, ultrasonography, and microscopic examinations, such as optical microscopy and microtomography. Analysis of the microtomography images showed that 50% of the samples had higher trabecular thickness in the lateral condyle. Comparison of each imaging examination revealed that ultrasound images were most closely related to the histological examination (p = .29) in terms of sensitivity, while macroscopic and radiographic examinations differed most between evaluators. Finally, the irregularities and modifications observed in the articular cartilage surface and subchondral bone were normal adaptations of the anatomical structures of trained racehorses, which should be considered during clinical examination.

Assuntos

RESUMO

Mineralization of the anatomical structures involved in the limb movement of horses has been reported to induce lameness and interfere with athletic performance. A 4-year-old jumping horse in sport activity was reported at Veterinary Hospital of University of São Paulo, with mild lameness and a mineralized oblique distal sesamoidean ligament (ODSL) of the left forelimb, revealed by a purchase radiographic and ultrasound examination. Mineralization is more common in tendons than ligaments. This report calls for attention to these structures when performing image exams, even in mild lameness. Long-term favorable follow-up by ultrasonographic and radiographic examination showed that the severe ligament injury in this case did not decrease the athletic activity until the present day.

A mineralização de estruturas anatômicas envolvidas na movimentação dos membros predispõe à claudicação e interfere no desempenho atlético. Foi admitido no Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da USP-SP um equino macho, da raça Brasileiro de Hipismo, com quatro anos de idade e histórico de claudicação leve e ligamento sesamoideo oblíquo distal mineralizado do membro torácico esquerdo, diagnosticado por exame de compra. A mineralização apresenta alta incidência em tendões, sendo em menor proporção nos ligamentos. Esse relato visa atentar à essas estruturas ao se realizar exames rotineiros de imagem, apesar de claudicação leve. O acompanhamento a longo prazo por ultrassonografia e radiografia mostrou que lesões graves de ligamentos, como no presente caso, não diminuíram a atividade atlética até o momento.

RESUMO

Urinary bladder rupture is rarely reported in adult horses and is usually associated with parturition, history of traumaor urethral obstruction. This paper reports two cases in mares free of these predisposing factors, diagnosed throughclinical manifestations, abdominal ultrasound and abdominocentesis, corrected by cystorrhaphy through laparotomy.While recovery was satisfactory in one case, the other case had complications in celiorraphy such as development ofincisional hernia, small colon eventration and intestinal adherences, opting by the euthanasia of the animal. These reportsare important because of the rarity with which they occur in adult mares. The different prognoses may be related to theseverity of each case, according to the location and extension of the wound, which directly or indirectly influence thetechnique and recovery of the animals.

A ruptura de bexiga urinária é raramente relatada em equinos adultos, sendo normalmente associada ao parto, antecedentesde trauma ou obstrução de uretra. Este trabalho relata dois casos em éguas livres destes fatores predisponentes,diagnosticados através de manifestações clínicas, ultrassonografia abdominal e abdominocentese, corrigidos por cistorrafiaatravés de laparotomia. Em um dos casos a recuperação ocorreu satisfatoriamente, porém no outro houve complicaçõesna celiorrafia como desenvolvimento de hérnia incisional, eventração de cólon menor e posterior desenvolvimento deaderências intestinais, optando-se pela eutanásia do animal. Estes relatos são importantes pela raridade com que ocorremem éguas adultas. Os diferentes prognósticos podem estar relacionados à gravidade de cada caso, de acordo com o locale extensão da ferida, que direta ou indiretamente influenciam na técnica empregada e recuperação dos animais.

RESUMO

Mineralization of the anatomical structures involved in the limb movement of horses has been reported to induce lameness and interfere with athletic performance. A 4-year-old jumping horse in sport activity was reported at Veterinary Hospital of University of São Paulo, with mild lameness and a mineralized oblique distal sesamoidean ligament (ODSL) of the left forelimb, revealed by a purchase radiographic and ultrasound examination. Mineralization is more common in tendons than ligaments. This report calls for attention to these structures when performing image exams, even in mild lameness. Long-term favorable follow-up by ultrasonographic and radiographic examination showed that the severe ligament injury in this case did not decrease the athletic activity until the present day.

A mineralização de estruturas anatômicas envolvidas na movimentação dos membros predispõe à claudicação e interfere no desempenho atlético. Foi admitido no Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da USP-SP um equino macho, da raça Brasileiro de Hipismo, com quatro anos de idade e histórico de claudicação leve e ligamento sesamoideo oblíquo distal mineralizado do membro torácico esquerdo, diagnosticado por exame de compra. A mineralização apresenta alta incidência em tendões, sendo em menor proporção nos ligamentos. Esse relato visa atentar à essas estruturas ao se realizar exames rotineiros de imagem, apesar de claudicação leve. O acompanhamento a longo prazo por ultrassonografia e radiografia mostrou que lesões graves de ligamentos, como no presente caso, não diminuíram a atividade atlética até o momento.

RESUMO

Urinary bladder rupture is rarely reported in adult horses and is usually associated with parturition, history of traumaor urethral obstruction. This paper reports two cases in mares free of these predisposing factors, diagnosed throughclinical manifestations, abdominal ultrasound and abdominocentesis, corrected by cystorrhaphy through laparotomy.While recovery was satisfactory in one case, the other case had complications in celiorraphy such as development ofincisional hernia, small colon eventration and intestinal adherences, opting by the euthanasia of the animal. These reportsare important because of the rarity with which they occur in adult mares. The different prognoses may be related to theseverity of each case, according to the location and extension of the wound, which directly or indirectly influence thetechnique and recovery of the animals.

A ruptura de bexiga urinária é raramente relatada em equinos adultos, sendo normalmente associada ao parto, antecedentesde trauma ou obstrução de uretra. Este trabalho relata dois casos em éguas livres destes fatores predisponentes,diagnosticados através de manifestações clínicas, ultrassonografia abdominal e abdominocentese, corrigidos por cistorrafiaatravés de laparotomia. Em um dos casos a recuperação ocorreu satisfatoriamente, porém no outro houve complicaçõesna celiorrafia como desenvolvimento de hérnia incisional, eventração de cólon menor e posterior desenvolvimento deaderências intestinais, optando-se pela eutanásia do animal. Estes relatos são importantes pela raridade com que ocorremem éguas adultas. Os diferentes prognósticos podem estar relacionados à gravidade de cada caso, de acordo com o locale extensão da ferida, que direta ou indiretamente influenciam na técnica empregada e recuperação dos animais.

RESUMO

Urinary bladder rupture is rarely reported in adult horses and is usually associated with parturition, history of traumaor urethral obstruction. This paper reports two cases in mares free of these predisposing factors, diagnosed throughclinical manifestations, abdominal ultrasound and abdominocentesis, corrected by cystorrhaphy through laparotomy.While recovery was satisfactory in one case, the other case had complications in celiorraphy such as development ofincisional hernia, small colon eventration and intestinal adherences, opting by the euthanasia of the animal. These reportsare important because of the rarity with which they occur in adult mares. The different prognoses may be related to theseverity of each case, according to the location and extension of the wound, which directly or indirectly influence thetechnique and recovery of the animals.

A ruptura de bexiga urinária é raramente relatada em equinos adultos, sendo normalmente associada ao parto, antecedentesde trauma ou obstrução de uretra. Este trabalho relata dois casos em éguas livres destes fatores predisponentes,diagnosticados através de manifestações clínicas, ultrassonografia abdominal e abdominocentese, corrigidos por cistorrafiaatravés de laparotomia. Em um dos casos a recuperação ocorreu satisfatoriamente, porém no outro houve complicaçõesna celiorrafia como desenvolvimento de hérnia incisional, eventração de cólon menor e posterior desenvolvimento deaderências intestinais, optando-se pela eutanásia do animal. Estes relatos são importantes pela raridade com que ocorremem éguas adultas. Os diferentes prognósticos podem estar relacionados à gravidade de cada caso, de acordo com o locale extensão da ferida, que direta ou indiretamente influenciam na técnica empregada e recuperação dos animais.

RESUMO

Mineralization of the anatomical structures involved in the limb movement of horses has been reported to induce lameness and interfere with athletic performance. A 4-year-old jumping horse in sport activity was reported at Veterinary Hospital of University of São Paulo, with mild lameness and a mineralized oblique distal sesamoidean ligament (ODSL) of the left forelimb, revealed by a purchase radiographic and ultrasound examination. Mineralization is more common in tendons than ligaments. This report calls for attention to these structures when performing image exams, even in mild lameness. Long-term favorable follow-up by ultrasonographic and radiographic examination showed that the severe ligament injury in this case did not decrease the athletic activity until the present day. 

A mineralização de estruturas anatômicas envolvidas na movimentação dos membros predispõe à claudicação e interfere no desempenho atlético. Foi admitido no Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da USP-SP um equino macho, da raça Brasileiro de Hipismo, com quatro anos de idade e histórico de claudicação leve e ligamento sesamoideo oblíquo distal mineralizado do membro torácico esquerdo, diagnosticado por exame de compra. A mineralização apresenta alta incidência em tendões, sendo em menor proporção nos ligamentos. Esse relato visa atentar à essas estruturas ao se realizar exames rotineiros de imagem, apesar de claudicação leve. O acompanhamento a longo prazo por ultrassonografia e radiografia mostrou que lesões graves de ligamentos, como no presente caso, não diminuíram a atividade atlética até o momento.

RESUMO

Urinary bladder rupture is rarely reported in adult horses and is usually associated with parturition, history of traumaor urethral obstruction. This paper reports two cases in mares free of these predisposing factors, diagnosed throughclinical manifestations, abdominal ultrasound and abdominocentesis, corrected by cystorrhaphy through laparotomy.While recovery was satisfactory in one case, the other case had complications in celiorraphy such as development ofincisional hernia, small colon eventration and intestinal adherences, opting by the euthanasia of the animal. These reportsare important because of the rarity with which they occur in adult mares. The different prognoses may be related to theseverity of each case, according to the location and extension of the wound, which directly or indirectly influence thetechnique and recovery of the animals.

A ruptura de bexiga urinária é raramente relatada em equinos adultos, sendo normalmente associada ao parto, antecedentesde trauma ou obstrução de uretra. Este trabalho relata dois casos em éguas livres destes fatores predisponentes,diagnosticados através de manifestações clínicas, ultrassonografia abdominal e abdominocentese, corrigidos por cistorrafiaatravés de laparotomia. Em um dos casos a recuperação ocorreu satisfatoriamente, porém no outro houve complicaçõesna celiorrafia como desenvolvimento de hérnia incisional, eventração de cólon menor e posterior desenvolvimento deaderências intestinais, optando-se pela eutanásia do animal. Estes relatos são importantes pela raridade com que ocorremem éguas adultas. Os diferentes prognósticos podem estar relacionados à gravidade de cada caso, de acordo com o locale extensão da ferida, que direta ou indiretamente influenciam na técnica empregada e recuperação dos animais.

RESUMO

Mineralization of the anatomical structures involved in the limb movement of horses has been reported to induce lameness and interfere with athletic performance. A 4-year-old jumping horse in sport activity was reported at Veterinary Hospital of University of São Paulo, with mild lameness and a mineralized oblique distal sesamoidean ligament (ODSL) of the left forelimb, revealed by a purchase radiographic and ultrasound examination. Mineralization is more common in tendons than ligaments. This report calls for attention to these structures when performing image exams, even in mild lameness. Long-term favorable follow-up by ultrasonographic and radiographic examination showed that the severe ligament injury in this case did not decrease the athletic activity until the present day. 

A mineralização de estruturas anatômicas envolvidas na movimentação dos membros predispõe à claudicação e interfere no desempenho atlético. Foi admitido no Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da USP-SP um equino macho, da raça Brasileiro de Hipismo, com quatro anos de idade e histórico de claudicação leve e ligamento sesamoideo oblíquo distal mineralizado do membro torácico esquerdo, diagnosticado por exame de compra. A mineralização apresenta alta incidência em tendões, sendo em menor proporção nos ligamentos. Esse relato visa atentar à essas estruturas ao se realizar exames rotineiros de imagem, apesar de claudicação leve. O acompanhamento a longo prazo por ultrassonografia e radiografia mostrou que lesões graves de ligamentos, como no presente caso, não diminuíram a atividade atlética até o momento.

RESUMO

BACKGROUND: Bone marrow and adipose tissues are known sources of mesenchymal stem cells (MSCs) in horses; however, synovial tissues might be a promising alternative. The aim of this study was to evaluate phenotypic characteristics and differentiation potential of equine MSCs from synovial fluid (SF) and synovial membrane (SM) of healthy joints (SF-H and SM-H), joints with osteoarthritis (SF-OA and SM-OA) and joints with osteochondritis dissecans (SF-OCD and SM-OCD) to determine the most suitable synovial source for an allogeneic therapy cell bank. METHODS: Expression of the markers CD90, CD105, CD44, and CD34 in SF-H, SM-H, SF-OA, SM-OA, SF-OCD and SM-OCD was verified by flow cytometry, and expression of cytokeratin, vimentin, PGP 9.5, PCNA, lysozyme, nanog, and Oct4 was verified by immunocytochemistry. MSCs were cultured and evaluated for their chondrogenic, osteogenic and adipogenic differentiation potential. Final quantification of extracellular matrix and mineralized matrix was determined using AxioVision software. A tumorigenicity test was conducted in Balb-C(nu/nu) mice to verify the safety of the MSCs from these sources. RESULTS: Cultured cells from SF and SM exhibited fibroblastoid morphology and the ability to adhere to plastic. The time elapsed between primary culture and the third passage was approximately 73 days for SF-H, 89 days for SF-OCD, 60 days for SF-OA, 68 days for SM-H, 57 days for SM-OCD and 54 days for SM-OA. The doubling time for SF-OCD was higher than that for other cells at the first passage (P < 0.05). MSCs from synovial tissues showed positive expression of the markers CD90, CD44, lysozyme, PGP 9.5, PCNA and vimentin and were able to differentiate into chondrogenic (21 days) and osteogenic (21 days) lineages, and, although poorly, into adipogenic lineages (14 days). The areas staining positive for extracellular matrix in the SF-H and SM-H groups were larger than those in the SF-OA and SM-OA groups (P < 0.05). The positive mineralized matrix area in the SF-H group was larger than those in all the other groups (P < 0.05). The studied cells exhibited no tumorigenic effects. CONCLUSIONS: SF and SM are viable sources of equine MSCs. All sources studied provide suitable MSCs for an allogeneic therapy cell bank; nevertheless, MSCs from healthy joints may be preferable for cell banking purposes because they exhibit better chondrogenic differentiation capacity.

Assuntos

RESUMO

The occlusion of inguinal ring is the treatment to avoid the inguinal hernia in horses. The aim of this study is evaluate the efficacy of homologous pericardium grafts for internal inguinal ring closure in horses, comparing mechanical or manual laparoscopic suture. Cross over study, using six healthy intact male Mangalarga breed horses aged between 3 and 12 years. Horses were operated under general anesthesia in 25º Trendelenburg position. Five laparoscopic portals were employed. Pericardium grafts measuring 4x5cm were anchored covering the left and right internal inguinal rings using either manual intracorporeal suture or laparoscopic stapler. Horses were followed-up during 11 weeks when were submitted to a laparoscopic control. Surgical time, trans and postoperative complications and effectiveness of internal inguinal closure were evaluated and statistically analyzed. The level of significance was set at 5% P 0.05. The procedures were realized without complications and the mean time required for manual and mechanical suture procedures differed significantly (67.8±15.3 and 14.1±2.1 min respectively; P 0.05). All manually sutured grafts remained in place and partial suture dehiscence with incomplete occlusion of the internal inguinal ring was observed in two stapled grafts. Non-severe complications were observed trans or postoperatively. One synechiae and three omental ad(AU)

A oclusão dos anéis inguinais é o tratamento indicado para evitar as hérnias inguinais comumente observadas nos equinos. O objetivo do trabalho é avaliar a eficácia do uso de enxerto de pericárdio homólogo para recobrimento do anel inguinal interno de equinos, fixado por laparoscopia, comparando a sutura manual e mecânica. Para tanto, foram utilizados seis equinos machos não castrados da raça Mangalarga com idade entre 3 e 12 anos. Os cavalos foram operados sob anestesia geral em posição de Trendelenburg com inclinação de 25º. Cinco portais laparoscópicos foram empregados. Enxertos de pericárdio homólogo, medindo 4X5cm, foram ancorados recobrindo os anéis inguinais internos esquerdo e direito, sendo em um dos lados fixado com sutura manual intracorpórea e o contralateral fixado com grampos, escolhidos por sorteio previamente ao procedimento, distribuído equitativamente. Os cavalos foram acompanhados por 11 semanas do período pós-operatório. O tempo cirúrgico, eventuais complicações trans ou pós-operatórias e a efetividade do procedimento foram avaliados e analisados estatisticamente com nível de significância de 5% P 0,05. Os procedimentos foram realizados sem complicações, com tempo médio requerido para realização da sutura manual e com grampos de 67,8±15,3 e 14,1±2,1 minutos, respectivamente, havendo diferença significativa P 0,05. Todos os implantes suturados manualmen(AU)

Assuntos

RESUMO

BACKGROUND: Isolation of mesenchymal stem cells (MSCs) in equines, has been reported for different tissues including bone marrow, adipose, umbilical cord, peripheral blood, and yolk sac. In regard to the MSCs derived from synovial fluid (SF) or membrane (SM), there is data available for humans, dogs, pigs, goats and horses. Especially in equines, these cells have being considered promising candidates for articular regeneration. Herein, we established and characterized MSCs obtained from equine SF and SM. Samples were obtained during arthroscopy and cultured using MEM (Minimum Essential Medium). MSCs were characterized by morphology and expression of specific markers for stem cells, pluripotency, inflammation, and cell cycle. RESULTS: The medium MEM was more effective (97% ± 2) to maintain both cultures. The cultures were composed by adherent cells with fibroblast-like shape, which had a growth pattern represented by a sigmoidal curve. After the expansion, the cells were analyzed by flow cytometry for stem cells, inflammatory, and cell cycle markers, and both lineages showed significant expression of CD45, Oct3/4, Nanog, CD105, CD90, CD34, CD117, CD133, TRA-1-81, VEGF, and LY6a. In contrast, there were differences in the cell cycle phases between the lineages, which was not observed in relation to the mitochondrial electrical potential. CONCLUSION: Given the large impact that joint pathology has on the athletic performance horses, our results suggested that the SF and SM are promising sources of stem cells with satisfactory characteristics of growth and gene expression that can be used in equine regenerative medicine.

Assuntos

RESUMO

Objetivo: O objetivo deste estudo foi verificar a ocorrência de Habronella sp. em equinos sadios e comprovar a possibilidade de utilização da gastroscopia como seu método de diagnóstico. Material e Método: Foi realizado exame gastroscópico em 21 equinos sadios, de diversas raças, com idade entre 3 e 20 anos, provenientes do Serviço de Clínica Médica de Equinos da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, São Paulo, SP. Resultados: A ocorrência de Habronell1a sp. foi de 28,6%, principalmente junto ao margo plicatus. A presença de quantidade excessiva de muco foi identificada em 50% dos animais parasitados. Os parasitas recuperados foram identificados como Habronema uscae. Conclusões: O Habronella sp. apresenta alta ocorrência no Brasil. Endoscopicamente, a habronemose gástrica é caracterizada pela presença de gastrite catarral, com excesso de produção de muco, e presença dos parasitas. Embora infecções com baixa carga parasitária possam não ser identificadas, a gastroscopia revelou-se uma forma eficiente de diagnóstico de habronemose gástrica em equinos.

Objective: The purpose of this study was lo investigate the occurrence of Habronema sp. in healthy horses and to confirm the effectiveness of gastroscopy as a diagnostic method. Material and Method: Gastroscopy examination was performed in 21 healthy horses of different breeds and aged between 3 and 20 years, referred from the Equine Clinic Service of the Faculdade de Medicina Velerinária e Zootecnia da Universidade de São Paulo (School of Veterinary Medicine and Animal Science of the University of São Paulo), São Paulo, Sp, Brazil. Results: Habronema sp. was present in 28,6% of the horses, mostly close lo the mango plicatus. The presence of excessive amounts was documented in 50% of the affected animals. The parasites recovered were identified as Habronema muscae. Conclusions: Habronema sp. is common in Brazil. Endoscopically, gastric habronemosis is characterized by the presence of the parasites and an associated catarrhal gastritis, with excessive mucus production. Although infections with low parasitic load may go unidentified, gastroscopy examination is an efficient diagnostic method for gastric habronemosis in horses.

Objetivo: Verificar la presencia de Habronema sp. en equinos sonos y confirmar la posibilidad de la utilización de la gastroscopia como método de diagnóstico. Material y Método: Fueron realizados exámenes gastroscópicos en 21 equinos sanos de varias razas, con edad entre 3 y 20 años, y que provenían dei "Serviço de Clínica Médica de Equinos" de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad de São Paulo, Sp, Brasil. Resultados: La presencia de Habronema sp. fue de un 28,6 %, principalmente junto ai margo plicatus. La presencia de cantidad excesiva de moco se ha identificado enun50% de los animales infectados. Los parásitos rescatados fueron identificados como Habronema muscae. Conclusiones: El Habronema sp. es bastante frecuente em nuestro país. Endoscópicamente, la habronemosis gástrica se caracteriza por la presencia de gastritis catarral, con exceso de producción de moco, y presencia de los parásitos. Aunque infecciones con baja carga parasitaria puedan no ser identificadas, la gastroscopia mostró ser unaforma eficiente de diagnóstico de habronemosis gástrica en equinos.

Assuntos

RESUMO

Objetivo: O objetivo deste estudo foi verificar a ocorrência de Habronella sp. em equinos sadios e comprovar a possibilidade de utilização da gastroscopia como seu método de diagnóstico. Material e Método: Foi realizado exame gastroscópico em 21 equinos sadios, de diversas raças, com idade entre 3 e 20 anos, provenientes do Serviço de Clínica Médica de Equinos da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, São Paulo, SP. Resultados: A ocorrência de Habronell1a sp. foi de 28,6%, principalmente junto ao margo plicatus. A presença de quantidade excessiva de muco foi identificada em 50% dos animais parasitados. Os parasitas recuperados foram identificados como Habronema uscae. Conclusões: O Habronella sp. apresenta alta ocorrência no Brasil. Endoscopicamente, a habronemose gástrica é caracterizada pela presença de gastrite catarral, com excesso de produção de muco, e presença dos parasitas. Embora infecções com baixa carga parasitária possam não ser identificadas, a gastroscopia revelou-se uma forma eficiente de diagnóstico de habronemose gástrica em equinos.(AU)

Objective: The purpose of this study was lo investigate the occurrence of Habronema sp. in healthy horses and to confirm the effectiveness of gastroscopy as a diagnostic method. Material and Method: Gastroscopy examination was performed in 21 healthy horses of different breeds and aged between 3 and 20 years, referred from the Equine Clinic Service of the Faculdade de Medicina Velerinária e Zootecnia da Universidade de São Paulo (School of Veterinary Medicine and Animal Science of the University of São Paulo), São Paulo, Sp, Brazil. Results: Habronema sp. was present in 28,6% of the horses, mostly close lo the mango plicatus. The presence of excessive amounts was documented in 50% of the affected animals. The parasites recovered were identified as Habronema muscae. Conclusions: Habronema sp. is common in Brazil. Endoscopically, gastric habronemosis is characterized by the presence of the parasites and an associated catarrhal gastritis, with excessive mucus production. Although infections with low parasitic load may go unidentified, gastroscopy examination is an efficient diagnostic method for gastric habronemosis in horses.(AU)

Objetivo: Verificar la presencia de Habronema sp. en equinos sonos y confirmar la posibilidad de la utilización de la gastroscopia como método de diagnóstico. Material y Método: Fueron realizados exámenes gastroscópicos en 21 equinos sanos de varias razas, con edad entre 3 y 20 años, y que provenían dei "Serviço de Clínica Médica de Equinos" de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad de São Paulo, Sp, Brasil. Resultados: La presencia de Habronema sp. fue de un 28,6 %, principalmente junto ai margo plicatus. La presencia de cantidad excesiva de moco se ha identificado enun50% de los animales infectados. Los parásitos rescatados fueron identificados como Habronema muscae. Conclusiones: El Habronema sp. es bastante frecuente em nuestro país. Endoscópicamente, la habronemosis gástrica se caracteriza por la presencia de gastritis catarral, con exceso de producción de moco, y presencia de los parásitos. Aunque infecciones con baja carga parasitaria puedan no ser identificadas, la gastroscopia mostró ser unaforma eficiente de diagnóstico de habronemosis gástrica en equinos.(AU)

Assuntos