ABSTRACT
Background: Malignant catarrhal fever (MCF) is a frequently fatal viral infection that affects various wild and domestic ruminants and even pigs, as recently reported. It is a disease characterized by lymphoproliferation, vasculitis and erosiveulcerative lesions in mucosa and skin. In Brazil, the virus that circulates and causes the disease has been identifi ed as OvHV-2. The aim of this study is to describe the clinicopathological changes in a cow with obliterative vasculitis caused by OvHV-2.Case: A two-year-old Gir cow with a history of intermittent diarrhea and progressive weight loss for approximately a year, which had not improved with antibiotic therapy, was euthanized and subjected to necropsy. In the necropsy, the liver was enlarged, fi rm, and had a marbled aspect all over the capsular and cut surfaces (light striations intercalated with dark areas). Cut surfaces also revealed thickening of the vessel walls, which exhibited a branched pattern. There was marked thickening of the small and large intestinal walls. The hepatic, mediastinal and mesenteric lymph nodes were enlarged. The samples were fi xed in 10% phosphate-buffered formalin, routinely processed for histology, embedded in paraffi n, cut 5-µm sections, and stained stained with hematoxylin and eosin. Additionally, sections of the liver and ileum were subjected to Massons trichrome staining. The main microscop
Background: Malignant catarrhal fever (MCF) is a frequently fatal viral infection that affects various wild and domestic ruminants and even pigs, as recently reported. It is a disease characterized by lymphoproliferation, vasculitis and erosiveulcerative lesions in mucosa and skin. In Brazil, the virus that circulates and causes the disease has been identifi ed as OvHV-2. The aim of this study is to describe the clinicopathological changes in a cow with obliterative vasculitis caused by OvHV-2.Case: A two-year-old Gir cow with a history of intermittent diarrhea and progressive weight loss for approximately a year, which had not improved with antibiotic therapy, was euthanized and subjected to necropsy. In the necropsy, the liver was enlarged, fi rm, and had a marbled aspect all over the capsular and cut surfaces (light striations intercalated with dark areas). Cut surfaces also revealed thickening of the vessel walls, which exhibited a branched pattern. There was marked thickening of the small and large intestinal walls. The hepatic, mediastinal and mesenteric lymph nodes were enlarged. The samples were fi xed in 10% phosphate-buffered formalin, routinely processed for histology, embedded in paraffi n, cut 5-µm sections, and stained stained with hematoxylin and eosin. Additionally, sections of the liver and ileum were subjected to Massons trichrome staining. The main microscop
ABSTRACT
Background: Urolithiasis is a metabolic disease of ruminants castrated and uncastrated. The formation of uroliths causes trauma and obstruction in the tract urinary. The nutrition and management are the main predisposing factors for this disease. Many cases occur sporadically, but outbreaks can occur or become an endemic problem. This paper describes a case of obstructive urolithiasis in Nelore cattle uncastrated in Recôncavo of Bahia, Brazil. Case: An 4-year-old Nelore cattle, uncastrated male was sent to the Centro de Desenvolvimento da Pecuária da Universidade Federal da Bahia (CPD-UFBA), Bahia, Brazil. by presenting a swelling on the ventral abdomen 5 days ago. Clinical examination revealed the exposure with mucosal necrosis and hemorrhage preputial, and continuous dripping of urine. The animal was euthanized in extremis and submitted to necropsy. The animal was necropsied and samples collected from the abdominal cavity, thoracic cavity, and nervous system. The samples were fixed in 10% formalin, cleaved, processed routinely for histology, embedded in paraffi n, cut at five microns thick and stained with hematoxylin and eosin (HE). Urinary stones collected during necropsy were sent for analysis of chemical composition. The macroscopic had swelling in the ventral abdominal region. By cutting this region was the formation of cavities and fi lled with red liquid and odor uremi
Background: Urolithiasis is a metabolic disease of ruminants castrated and uncastrated. The formation of uroliths causes trauma and obstruction in the tract urinary. The nutrition and management are the main predisposing factors for this disease. Many cases occur sporadically, but outbreaks can occur or become an endemic problem. This paper describes a case of obstructive urolithiasis in Nelore cattle uncastrated in Recôncavo of Bahia, Brazil. Case: An 4-year-old Nelore cattle, uncastrated male was sent to the Centro de Desenvolvimento da Pecuária da Universidade Federal da Bahia (CPD-UFBA), Bahia, Brazil. by presenting a swelling on the ventral abdomen 5 days ago. Clinical examination revealed the exposure with mucosal necrosis and hemorrhage preputial, and continuous dripping of urine. The animal was euthanized in extremis and submitted to necropsy. The animal was necropsied and samples collected from the abdominal cavity, thoracic cavity, and nervous system. The samples were fixed in 10% formalin, cleaved, processed routinely for histology, embedded in paraffi n, cut at five microns thick and stained with hematoxylin and eosin (HE). Urinary stones collected during necropsy were sent for analysis of chemical composition. The macroscopic had swelling in the ventral abdominal region. By cutting this region was the formation of cavities and fi lled with red liquid and odor uremi
ABSTRACT
Background: Malignant edema occurs when a wound is contaminated by one or a combination of the following bacteria: Clostridium septicum, C. sordellii, C. chauvoei, C. novyi type A, and C. perfringens type A. Although malignant edema has been recognized as a disease of economic importance in domestic ruminants, it has rarely been reported in horses in Brazil. Immunohistochemistry is a method that combines histological, immunological and biochemical techniques which, with the use of specifi c antibodies, detects the agent in situ. This paper reports a case of malignant edema by Clostridium chauvoei in a horse in Bahia, Brazil.Case: A 4.5-year-old male horse was submitted for necropsy. The clinical history was obtained from the owner. Samples from the abdominal cavity, thoracic cavity, central nervous system and integumentary system were collected. The samples were fi xed in 10% formalin, processed routinely for histology, embedded in paraffi n, sectioned at fi ve microns, and stained with hematoxylin and eosin. Additionally, histological sections were subjected to immunohistochemistry anti-Clostridium perfringens type A, C. septicum, C. chauvoei, C. novyi type A, and C. sordellii. Positive and negative controls were included. The animal presented diffi culty in walking, swelling of the pelvic limbs two days after intramuscular anti-infl ammatory treatment, and died seven hours af
Background: Malignant edema occurs when a wound is contaminated by one or a combination of the following bacteria: Clostridium septicum, C. sordellii, C. chauvoei, C. novyi type A, and C. perfringens type A. Although malignant edema has been recognized as a disease of economic importance in domestic ruminants, it has rarely been reported in horses in Brazil. Immunohistochemistry is a method that combines histological, immunological and biochemical techniques which, with the use of specifi c antibodies, detects the agent in situ. This paper reports a case of malignant edema by Clostridium chauvoei in a horse in Bahia, Brazil.Case: A 4.5-year-old male horse was submitted for necropsy. The clinical history was obtained from the owner. Samples from the abdominal cavity, thoracic cavity, central nervous system and integumentary system were collected. The samples were fi xed in 10% formalin, processed routinely for histology, embedded in paraffi n, sectioned at fi ve microns, and stained with hematoxylin and eosin. Additionally, histological sections were subjected to immunohistochemistry anti-Clostridium perfringens type A, C. septicum, C. chauvoei, C. novyi type A, and C. sordellii. Positive and negative controls were included. The animal presented diffi culty in walking, swelling of the pelvic limbs two days after intramuscular anti-infl ammatory treatment, and died seven hours af
ABSTRACT
Background: The squamous cell carcinoma is a malignant tumor of epidermal cells in which the cells show differentiation to keratinocytes. It is a common neoplasm affecting all domestic animals and other mammalian species. There are several factors that are associated with the development of a squamous cell carcinoma, including prolonged exposure to ultraviolet light, lack of pigment within the epidermis at the sites of tumor development, and lack of hair or a very sparse hair coat at the affected sites. They can appear anywhere on the animals body predominantly in areas devoid of hair and ears, eyelids, nose and perineal area. Squamous cell carcinoma may occur in young animals, but the incidence increases with age. The cut surface of the tumor appears grainy, whitish or yellowish. These tumors are very infi ltrative but rarely metastasize. Microscopically there is the characteristic feature of squamous cell carcinomas and well differentiated with abundant proliferation of stromal. The tumor is common in the horse, cow, cat, and dog, relatively uncommon in the sheep, and rare in the goat and pig. In sheep and goats there are few data in literature. This paper reports a case of squamous cell carcinoma in the frontal region of the head in a Pardo Alpino goat in Bahia.Case: An 6-year-old female Pardo Alpino goat was made euthanasia and sent for necropsy to the Laboratório de Patol
Background: The squamous cell carcinoma is a malignant tumor of epidermal cells in which the cells show differentiation to keratinocytes. It is a common neoplasm affecting all domestic animals and other mammalian species. There are several factors that are associated with the development of a squamous cell carcinoma, including prolonged exposure to ultraviolet light, lack of pigment within the epidermis at the sites of tumor development, and lack of hair or a very sparse hair coat at the affected sites. They can appear anywhere on the animals body predominantly in areas devoid of hair and ears, eyelids, nose and perineal area. Squamous cell carcinoma may occur in young animals, but the incidence increases with age. The cut surface of the tumor appears grainy, whitish or yellowish. These tumors are very infi ltrative but rarely metastasize. Microscopically there is the characteristic feature of squamous cell carcinomas and well differentiated with abundant proliferation of stromal. The tumor is common in the horse, cow, cat, and dog, relatively uncommon in the sheep, and rare in the goat and pig. In sheep and goats there are few data in literature. This paper reports a case of squamous cell carcinoma in the frontal region of the head in a Pardo Alpino goat in Bahia.Case: An 6-year-old female Pardo Alpino goat was made euthanasia and sent for necropsy to the Laboratório de Patol
ABSTRACT
Background: The squamous cell carcinoma is a malignant tumor of epidermal cells in which the cells show differentiation to keratinocytes. It is a common neoplasm affecting all domestic animals and other mammalian species. There are several factors that are associated with the development of a squamous cell carcinoma, including prolonged exposure to ultraviolet light, lack of pigment within the epidermis at the sites of tumor development, and lack of hair or a very sparse hair coat at the affected sites. They can appear anywhere on the animals body predominantly in areas devoid of hair and ears, eyelids, nose and perineal area. Squamous cell carcinoma may occur in young animals, but the incidence increases with age. The cut surface of the tumor appears grainy, whitish or yellowish. These tumors are very infi ltrative but rarely metastasize. Microscopically there is the characteristic feature of squamous cell carcinomas and well differentiated with abundant proliferation of stromal. The tumor is common in the horse, cow, cat, and dog, relatively uncommon in the sheep, and rare in the goat and pig. In sheep and goats there are few data in literature. This paper reports a case of squamous cell carcinoma in the frontal region of the head in a Pardo Alpino goat in Bahia.Case: An 6-year-old female Pardo Alpino goat was made euthanasia and sent for necropsy to the Laboratório de Patol
Background: The squamous cell carcinoma is a malignant tumor of epidermal cells in which the cells show differentiation to keratinocytes. It is a common neoplasm affecting all domestic animals and other mammalian species. There are several factors that are associated with the development of a squamous cell carcinoma, including prolonged exposure to ultraviolet light, lack of pigment within the epidermis at the sites of tumor development, and lack of hair or a very sparse hair coat at the affected sites. They can appear anywhere on the animals body predominantly in areas devoid of hair and ears, eyelids, nose and perineal area. Squamous cell carcinoma may occur in young animals, but the incidence increases with age. The cut surface of the tumor appears grainy, whitish or yellowish. These tumors are very infi ltrative but rarely metastasize. Microscopically there is the characteristic feature of squamous cell carcinomas and well differentiated with abundant proliferation of stromal. The tumor is common in the horse, cow, cat, and dog, relatively uncommon in the sheep, and rare in the goat and pig. In sheep and goats there are few data in literature. This paper reports a case of squamous cell carcinoma in the frontal region of the head in a Pardo Alpino goat in Bahia.Case: An 6-year-old female Pardo Alpino goat was made euthanasia and sent for necropsy to the Laboratório de Patol
ABSTRACT
Background: Malignant edema occurs when a wound is contaminated by one or a combination of the following bacteria: Clostridium septicum, C. sordellii, C. chauvoei, C. novyi type A, and C. perfringens type A. Although malignant edema has been recognized as a disease of economic importance in domestic ruminants, it has rarely been reported in horses in Brazil. Immunohistochemistry is a method that combines histological, immunological and biochemical techniques which, with the use of specifi c antibodies, detects the agent in situ. This paper reports a case of malignant edema by Clostridium chauvoei in a horse in Bahia, Brazil.Case: A 4.5-year-old male horse was submitted for necropsy. The clinical history was obtained from the owner. Samples from the abdominal cavity, thoracic cavity, central nervous system and integumentary system were collected. The samples were fi xed in 10% formalin, processed routinely for histology, embedded in paraffi n, sectioned at fi ve microns, and stained with hematoxylin and eosin. Additionally, histological sections were subjected to immunohistochemistry anti-Clostridium perfringens type A, C. septicum, C. chauvoei, C. novyi type A, and C. sordellii. Positive and negative controls were included. The animal presented diffi culty in walking, swelling of the pelvic limbs two days after intramuscular anti-infl ammatory treatment, and died seven hours af
Background: Malignant edema occurs when a wound is contaminated by one or a combination of the following bacteria: Clostridium septicum, C. sordellii, C. chauvoei, C. novyi type A, and C. perfringens type A. Although malignant edema has been recognized as a disease of economic importance in domestic ruminants, it has rarely been reported in horses in Brazil. Immunohistochemistry is a method that combines histological, immunological and biochemical techniques which, with the use of specifi c antibodies, detects the agent in situ. This paper reports a case of malignant edema by Clostridium chauvoei in a horse in Bahia, Brazil.Case: A 4.5-year-old male horse was submitted for necropsy. The clinical history was obtained from the owner. Samples from the abdominal cavity, thoracic cavity, central nervous system and integumentary system were collected. The samples were fi xed in 10% formalin, processed routinely for histology, embedded in paraffi n, sectioned at fi ve microns, and stained with hematoxylin and eosin. Additionally, histological sections were subjected to immunohistochemistry anti-Clostridium perfringens type A, C. septicum, C. chauvoei, C. novyi type A, and C. sordellii. Positive and negative controls were included. The animal presented diffi culty in walking, swelling of the pelvic limbs two days after intramuscular anti-infl ammatory treatment, and died seven hours af
ABSTRACT
Background: Urolithiasis is a metabolic disease of ruminants castrated and uncastrated. The formation of uroliths causes trauma and obstruction in the tract urinary. The nutrition and management are the main predisposing factors for this disease. Many cases occur sporadically, but outbreaks can occur or become an endemic problem. This paper describes a case of obstructive urolithiasis in Nelore cattle uncastrated in Recôncavo of Bahia, Brazil. Case: An 4-year-old Nelore cattle, uncastrated male was sent to the Centro de Desenvolvimento da Pecuária da Universidade Federal da Bahia (CPD-UFBA), Bahia, Brazil. by presenting a swelling on the ventral abdomen 5 days ago. Clinical examination revealed the exposure with mucosal necrosis and hemorrhage preputial, and continuous dripping of urine. The animal was euthanized in extremis and submitted to necropsy. The animal was necropsied and samples collected from the abdominal cavity, thoracic cavity, and nervous system. The samples were fixed in 10% formalin, cleaved, processed routinely for histology, embedded in paraffi n, cut at five microns thick and stained with hematoxylin and eosin (HE). Urinary stones collected during necropsy were sent for analysis of chemical composition. The macroscopic had swelling in the ventral abdominal region. By cutting this region was the formation of cavities and fi lled with red liquid and odor uremi
Background: Urolithiasis is a metabolic disease of ruminants castrated and uncastrated. The formation of uroliths causes trauma and obstruction in the tract urinary. The nutrition and management are the main predisposing factors for this disease. Many cases occur sporadically, but outbreaks can occur or become an endemic problem. This paper describes a case of obstructive urolithiasis in Nelore cattle uncastrated in Recôncavo of Bahia, Brazil. Case: An 4-year-old Nelore cattle, uncastrated male was sent to the Centro de Desenvolvimento da Pecuária da Universidade Federal da Bahia (CPD-UFBA), Bahia, Brazil. by presenting a swelling on the ventral abdomen 5 days ago. Clinical examination revealed the exposure with mucosal necrosis and hemorrhage preputial, and continuous dripping of urine. The animal was euthanized in extremis and submitted to necropsy. The animal was necropsied and samples collected from the abdominal cavity, thoracic cavity, and nervous system. The samples were fixed in 10% formalin, cleaved, processed routinely for histology, embedded in paraffi n, cut at five microns thick and stained with hematoxylin and eosin (HE). Urinary stones collected during necropsy were sent for analysis of chemical composition. The macroscopic had swelling in the ventral abdominal region. By cutting this region was the formation of cavities and fi lled with red liquid and odor uremi
ABSTRACT
Background: Malignant catarrhal fever (MCF) is a frequently fatal viral infection that affects various wild and domestic ruminants and even pigs, as recently reported. It is a disease characterized by lymphoproliferation, vasculitis and erosiveulcerative lesions in mucosa and skin. In Brazil, the virus that circulates and causes the disease has been identifi ed as OvHV-2. The aim of this study is to describe the clinicopathological changes in a cow with obliterative vasculitis caused by OvHV-2.Case: A two-year-old Gir cow with a history of intermittent diarrhea and progressive weight loss for approximately a year, which had not improved with antibiotic therapy, was euthanized and subjected to necropsy. In the necropsy, the liver was enlarged, fi rm, and had a marbled aspect all over the capsular and cut surfaces (light striations intercalated with dark areas). Cut surfaces also revealed thickening of the vessel walls, which exhibited a branched pattern. There was marked thickening of the small and large intestinal walls. The hepatic, mediastinal and mesenteric lymph nodes were enlarged. The samples were fi xed in 10% phosphate-buffered formalin, routinely processed for histology, embedded in paraffi n, cut 5-µm sections, and stained stained with hematoxylin and eosin. Additionally, sections of the liver and ileum were subjected to Massons trichrome staining. The main microscop
Background: Malignant catarrhal fever (MCF) is a frequently fatal viral infection that affects various wild and domestic ruminants and even pigs, as recently reported. It is a disease characterized by lymphoproliferation, vasculitis and erosiveulcerative lesions in mucosa and skin. In Brazil, the virus that circulates and causes the disease has been identifi ed as OvHV-2. The aim of this study is to describe the clinicopathological changes in a cow with obliterative vasculitis caused by OvHV-2.Case: A two-year-old Gir cow with a history of intermittent diarrhea and progressive weight loss for approximately a year, which had not improved with antibiotic therapy, was euthanized and subjected to necropsy. In the necropsy, the liver was enlarged, fi rm, and had a marbled aspect all over the capsular and cut surfaces (light striations intercalated with dark areas). Cut surfaces also revealed thickening of the vessel walls, which exhibited a branched pattern. There was marked thickening of the small and large intestinal walls. The hepatic, mediastinal and mesenteric lymph nodes were enlarged. The samples were fi xed in 10% phosphate-buffered formalin, routinely processed for histology, embedded in paraffi n, cut 5-µm sections, and stained stained with hematoxylin and eosin. Additionally, sections of the liver and ileum were subjected to Massons trichrome staining. The main microscop
ABSTRACT
Background: Rabies is a zoonotic disease caused by rabies virus, the genus Lyssavirus e family Rhabdoviridae. The commonest way of rabies transmission is by the bite of an infected mammal. Bites by rabid animals generally inoculate virus-laden saliva through the skin into muscle and subcutaneous tissues. Rabies has previously been regarded as 100% lethal. In South America, rabies in cattle is transmitted by vampire bats Desmodus rotundus mainly resulting in a major economic problem and public health. The present study retrospectively analyzed data from cattle affected by rabies registered between 2002 and 2007, evaluating the epidemiological, clinical and pathological and immunohistochemistry studies.Materials, Methods & Results: This retrospective study included epidemiological, clinical, pathological, direct immunofluorescence, and immunohistochemistry fi ndings from 26 cattle affected by rabies diagnosed by the Laboratory of Veterinary Pathology, UFRGS, Porto Alegre, RS, Brazil in the period from 2002 to 2007. The samples were selected from a histological diagnosis of lesions characteristic of rabies or positive direct immunofl uorescence for rabies where samples were available for histological examination. The central nervous system (CNS) samples of cattle were reported in 10% formalin fi xed, routinely processed for histology, embedded in paraffin, cut at 5 µm and stai
Background: Rabies is a zoonotic disease caused by rabies virus, the genus Lyssavirus e family Rhabdoviridae. The commonest way of rabies transmission is by the bite of an infected mammal. Bites by rabid animals generally inoculate virus-laden saliva through the skin into muscle and subcutaneous tissues. Rabies has previously been regarded as 100% lethal. In South America, rabies in cattle is transmitted by vampire bats Desmodus rotundus mainly resulting in a major economic problem and public health. The present study retrospectively analyzed data from cattle affected by rabies registered between 2002 and 2007, evaluating the epidemiological, clinical and pathological and immunohistochemistry studies.Materials, Methods & Results: This retrospective study included epidemiological, clinical, pathological, direct immunofluorescence, and immunohistochemistry fi ndings from 26 cattle affected by rabies diagnosed by the Laboratory of Veterinary Pathology, UFRGS, Porto Alegre, RS, Brazil in the period from 2002 to 2007. The samples were selected from a histological diagnosis of lesions characteristic of rabies or positive direct immunofl uorescence for rabies where samples were available for histological examination. The central nervous system (CNS) samples of cattle were reported in 10% formalin fi xed, routinely processed for histology, embedded in paraffin, cut at 5 µm and stai
ABSTRACT
Background: Rabies is a zoonotic disease caused by rabies virus, the genus Lyssavirus e family Rhabdoviridae. The commonest way of rabies transmission is by the bite of an infected mammal. Bites by rabid animals generally inoculate virus-laden saliva through the skin into muscle and subcutaneous tissues. Rabies has previously been regarded as 100% lethal. In South America, rabies in cattle is transmitted by vampire bats Desmodus rotundus mainly resulting in a major economic problem and public health. The present study retrospectively analyzed data from cattle affected by rabies registered between 2002 and 2007, evaluating the epidemiological, clinical and pathological and immunohistochemistry studies.Materials, Methods & Results: This retrospective study included epidemiological, clinical, pathological, direct immunofluorescence, and immunohistochemistry fi ndings from 26 cattle affected by rabies diagnosed by the Laboratory of Veterinary Pathology, UFRGS, Porto Alegre, RS, Brazil in the period from 2002 to 2007. The samples were selected from a histological diagnosis of lesions characteristic of rabies or positive direct immunofl uorescence for rabies where samples were available for histological examination. The central nervous system (CNS) samples of cattle were reported in 10% formalin fi xed, routinely processed for histology, embedded in paraffin, cut at 5 µm and stai
Background: Rabies is a zoonotic disease caused by rabies virus, the genus Lyssavirus e family Rhabdoviridae. The commonest way of rabies transmission is by the bite of an infected mammal. Bites by rabid animals generally inoculate virus-laden saliva through the skin into muscle and subcutaneous tissues. Rabies has previously been regarded as 100% lethal. In South America, rabies in cattle is transmitted by vampire bats Desmodus rotundus mainly resulting in a major economic problem and public health. The present study retrospectively analyzed data from cattle affected by rabies registered between 2002 and 2007, evaluating the epidemiological, clinical and pathological and immunohistochemistry studies.Materials, Methods & Results: This retrospective study included epidemiological, clinical, pathological, direct immunofluorescence, and immunohistochemistry fi ndings from 26 cattle affected by rabies diagnosed by the Laboratory of Veterinary Pathology, UFRGS, Porto Alegre, RS, Brazil in the period from 2002 to 2007. The samples were selected from a histological diagnosis of lesions characteristic of rabies or positive direct immunofl uorescence for rabies where samples were available for histological examination. The central nervous system (CNS) samples of cattle were reported in 10% formalin fi xed, routinely processed for histology, embedded in paraffin, cut at 5 µm and stai
ABSTRACT
This paper describes two fatal cases of embolic and septicaemic lesions caused by Actinobacillus equuli subsp. haemolyticus in two newborn foals. In one foal was observed at necropsy small whitish nodules of approximately 0,2cm in diameter on the renal cortex and the other foal had an area of gray color in the left diaphragmatic lobe of the lung. The main histologic changes were observed in the first foal kidneys with multifocal to coalescing inflammatory suppurative infiltrates associated with slightly granular basophilic bacterial colonies. In the second animal the lung showed neutrophilic inflammatory infiltrate, edema, congestion and presence of intravascular bacterial colonies. In both cases, the bacteria were disseminated by several organs including cerebral capillary cerebral. In both cases A. equuli subsp. haemolyticus was isolated and identified.
Neste trabalho, são descritos dois casos fatais de septicemia com lesões embólicas causadas por Actinobacillus equuli subsp. haemolyticus em potros recém-nascidos. Em um dos animais, foram observados, na necropsia, pequenos nódulos esbranquiçados de aproximadamente 0,2cm de diâmetro na cortical dos rins e no outro havia uma área de coloração acinzentada no lobo diafragmático esquerdo do pulmão. As principais alterações microscópicas observadas no primeiro animal foram rins com infiltrado inflamatório multifocal a coalescente acentuado, com predomínio de neutrófilos, associado com áreas basofílicas levemente granulares compostas por grumos bacterianos. No segundo animal, o pulmão apresentava infiltrado inflamatório neutrofílico, edema, congestão e colônias bacterianas intravasculares. Em ambos os casos, colônias bacterianas foram encontradas disseminadas por vários órgãos incluindo capilares cerebrais. Nos dois casos foi isolado e identificado A. equuli subsp. haemolyticus.
ABSTRACT
This paper describes two fatal cases of embolic and septicaemic lesions caused by Actinobacillus equuli subsp. haemolyticus in two newborn foals. In one foal was observed at necropsy small whitish nodules of approximately 0,2cm in diameter on the renal cortex and the other foal had an area of gray color in the left diaphragmatic lobe of the lung. The main histologic changes were observed in the first foal kidneys with multifocal to coalescing inflammatory suppurative infiltrates associated with slightly granular basophilic bacterial colonies. In the second animal the lung showed neutrophilic inflammatory infiltrate, edema, congestion and presence of intravascular bacterial colonies. In both cases, the bacteria were disseminated by several organs including cerebral capillary cerebral. In both cases A. equuli subsp. haemolyticus was isolated and identified.
Neste trabalho, são descritos dois casos fatais de septicemia com lesões embólicas causadas por Actinobacillus equuli subsp. haemolyticus em potros recém-nascidos. Em um dos animais, foram observados, na necropsia, pequenos nódulos esbranquiçados de aproximadamente 0,2cm de diâmetro na cortical dos rins e no outro havia uma área de coloração acinzentada no lobo diafragmático esquerdo do pulmão. As principais alterações microscópicas observadas no primeiro animal foram rins com infiltrado inflamatório multifocal a coalescente acentuado, com predomínio de neutrófilos, associado com áreas basofílicas levemente granulares compostas por grumos bacterianos. No segundo animal, o pulmão apresentava infiltrado inflamatório neutrofílico, edema, congestão e colônias bacterianas intravasculares. Em ambos os casos, colônias bacterianas foram encontradas disseminadas por vários órgãos incluindo capilares cerebrais. Nos dois casos foi isolado e identificado A. equuli subsp. haemolyticus.
ABSTRACT
Background: : : : rabies is a fatal zoonosis caused by a highly neurotropic RNA virus which causes neurological signs and that is distributed almost worldwide. Rabies affects domestic and wild animals and this is a disease transmitted by their bites, through which the virus present in the saliva is inoculated. In Brazil, Desmodus rotundus is the main hematophagous bat species that transmits rabies, especially to herbivores e equines. In equines, the clinical manifestation varies a lot, including both the paralytic and the furious form of the disease. The goal of this study is to describe a case of equine rabies in the city of Porto Alegre, Rio Grande do Sul, Brazil. Case: a six-year old male American Quarter Horse, which presented a clinical picture characterized by colic, depraved appetite and difficulty to move, was admitted to the Hospital de Clínicas Veterinárias of Universidade Federal do Rio Grande do Sul (HCV-UFRGS). The horse did not respond to treatment, therefore, it was submitted to exploratory laparotomy, when the moderate intestinal constipation and low intestinal motility was observed. A large colon enterotomy was performed and the intestinal contents were partially emptied. During recovery from anesthesia, the animal remained in lateral decubitus, not making any attempt to stand up. The animal did not show a favorable clinical evolution a few hours later, disp
ABSTRACT
Background: : : : rabies is a fatal zoonosis caused by a highly neurotropic RNA virus which causes neurological signs and that is distributed almost worldwide. Rabies affects domestic and wild animals and this is a disease transmitted by their bites, through which the virus present in the saliva is inoculated. In Brazil, Desmodus rotundus is the main hematophagous bat species that transmits rabies, especially to herbivores e equines. In equines, the clinical manifestation varies a lot, including both the paralytic and the furious form of the disease. The goal of this study is to describe a case of equine rabies in the city of Porto Alegre, Rio Grande do Sul, Brazil. Case: a six-year old male American Quarter Horse, which presented a clinical picture characterized by colic, depraved appetite and difficulty to move, was admitted to the Hospital de Clínicas Veterinárias of Universidade Federal do Rio Grande do Sul (HCV-UFRGS). The horse did not respond to treatment, therefore, it was submitted to exploratory laparotomy, when the moderate intestinal constipation and low intestinal motility was observed. A large colon enterotomy was performed and the intestinal contents were partially emptied. During recovery from anesthesia, the animal remained in lateral decubitus, not making any attempt to stand up. The animal did not show a favorable clinical evolution a few hours later, disp
ABSTRACT
In June of 2007, mortality in cattle with clinical signs and lesions of acute hepatic insufficiency on a farm located in the hillside of Rio Grande do Sul mountain range was attributed to Cestrum intermedium consumption. From 17 bovines, two died up to 12 hours presenting clinical signs such as muscular tremors, incoordination, aggressiveness, lateral recumbence and death. Macroscopic lesions were found primary in the liver and were characterized by a slightly increased volume and diffuse accentuation of the lobules. Microscopically, the liver showed diffuse and accentuated centrilobular coagulative necrosis. The presence of Cestrum intermedium plants that was being ingested by the bovine associated with the hepatic lesions was decisive for the diagnosis.
Em junho de 2007, uma mortalidade de bovinos com sinais clínicos e lesões de insuficiência hepática aguda em uma propriedade, na região da encosta da serra do Rio Grande do Sul, foi atribuída ao consumo de Cestrum intermedium. De um total de 17 bovinos, dois morreram com curso clínico inferior a 12 horas, apresentando tremores musculares, andar cambaleante, reações agressivas, decúbito lateral e morte. À necropsia, o fígado estava moderadamente aumentado de volume e com acentuação do padrão lobular. Histologicamente, o fígado apresentava necrose de coagulação centrolobular, difusa, aguda e acentuada. As alterações patológicas associadas à presença e a evidência de consumo da planta pelos bovinos permitiram o diagnóstico.
ABSTRACT
Descrevem-se cinco casos de pitiose cutânea em equinos enviados ao Laboratório de Patologia Veterinária da Universidade Federal do Rio Grande do Sul, Brasil. Microscopicamente focos necróticos circundados por infiltrados de eosinófilos, neutrófilos, macrófagos e abundante tecido conjuntivo fibroso foi observado. Filamentos de hifas esparsamente septadas foram identificadas no centro das áreas necróticas. Na coloração de prata metenamina de Grocott hifas septadas, ramificadas foram também observadas no interior dos focos de necrose. O diagnóstico de pitiose foi confirmado em todos os casos através do teste de imuno-histoquímica em cortes de tecido usando um anticorpo policlonal anti- Pythium insidiosum. Imuno-histoquímica em tecidos fixados em formalina podem ser úteis no diagnóstico de pitiose quando o material submetido não pode ser mais utilizado para cultivo.
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Rinite micótica é uma doença granulomatosa de ocorrência pouco frequente que acomete o homem e os animais. Recentemente, no Centro-Oeste e Nordeste do Brasil foram descritos casos de rinite micótica em ovinos. Em uma propriedade no município de Parobé, Rio Grande do Sul, Sul do Brasil adoeceram e morreram, desde janeiro de 2007, 4 ovinos de um total de 30 animais. Os animais apresentavam dificuldade respiratória, intolerância ao exercício e secreção serossanguinolenta pelas narinas e morte após alguns dias. Um quinto animal doente foi encaminhado ao Setor de Patologia Veterinária da UFRGS para exame clínico e necropsia. O ovino apresentava dificuldade respiratória devido à obstrução parcial dos orifícios nasais, intolerância ao exercício, espirros e corrimento nasal serossanguinolento bilateral. Os principais achados de necropsia foram massas de coloração amarelada irregular, friável e com coágulos de sangue na região etmoidal, conchas nasais e coanas do lado esquerdo. Foram encontrados ainda, pequenos nódulos no lóbulo pulmonar diafragmático esquerdo. Na microscopia da mucosa da cavidade nasal apresentava necrose multifocal, contendo estruturas semelhantes a hifas e circundadas por infiltrado de neutrófilo, macrófagos e células gigantes. Cérebro com focos necróticos piogranulomatosos na leptomeninge das porções frontais. Na coloração de Gomori metenamina-prata, foram observada
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Práticas inadequadas de manejo atuam como fatores predisponentes a quadros clínico-patológicos em caprinos, destacando-se as falhas nutricionais e erros de amochamento e casqueamento. No presente relato, apresenta-se um caso de traumatismo medular na região cervical em caprino Saanen de quatro anos de idade, mantido em regime de confinamento. Segundo história clínica obtida com o tratador, o caprino se apresentou disposto no arraçoamento matinal, entretanto, ao entardecer mostrou-se apático e em decúbito esternal, permanecendo assim por cinco dias. No exame clínico, verificou-se que o animal não conseguia levantar-se, mas mantinha apetite e resposta aos estímulos externos normais. Optou-se pela realização da eutanásia, em decorrência do estado debilitado em que se apresentava. No exame macroscópico, evidenciou-se hemorragia na porção cervical da medula espinhal (C4-C6) e, no exame microscópico, observou-se, na medula cervical, hemorragia e hemossiderose difusa moderada, degeneração axonal e esferóides axonais. Determinou-se que o quadro apresentado era compatível com traumatismo medular na região cervical. Após avaliação das instalações e manejo adotados na propriedade, considera-se a possibilidade do macho ter escorregado enquanto se alimentava, ficando com os chifres presos à proteção do cocho, o que levou à lesão na medula. Considera-se, assim, que a manutenção adequada das
ABSTRACT
Difalo, penis duplo ou bifido e uma anomalia congenita rara que ocorre em animais e no homem, com escassos relatos na literatura. Este relato apresenta um caso de difalia em um bovino macho adulto castrado. A peca do sistema reprodutor de um bovino foi encaminhada por um frigorifico local para realizacao de exame histologico. O material foi analisado, fixado em formol 10%, processado de forma rotineira para histologia e corado pela hematoxilina-eosina. Macroscopicamente, a peca apresentava duas glandes penianas, uma composta pelo corpo cavernoso, corpo esponjoso, uretra e prepucio do penis, sugerindo que esta fosse a parte normal. Adjacente a essa, havia uma formacao tecidual identica a glande peniana, que, ao corte, no entanto, nao se observavam uretra, corpos cavernoso e esponjoso. Ao exame microscopico das duas glandes, confirmou-se sua estrutura histologica, uma composta por corpo cavernoso, corpo esponjoso e uretra e a outra somente de tecido conjuntivo fibroso revestido por epitelio. O diagnostico foi baseado nas alteracoes macroscopicas e constituicao histologica caracteristica. Esta anomalia pode prejudicar a miccao assim como o desempenho reprodutivo do animal.
ABSTRACT
Descrevem-se cinco casos de pitiose cutânea em equinos enviados ao Laboratório de Patologia Veterinária da Universidade Federal do Rio Grande do Sul, Brasil. Microscopicamente focos necróticos circundados por infiltrados de eosinófilos, neutrófilos, macrófagos e abundante tecido conjuntivo fibroso foi observado. Filamentos de hifas esparsamente septadas foram identificadas no centro das áreas necróticas. Na coloração de prata metenamina de Grocott hifas septadas, ramificadas foram também observadas no interior dos focos de necrose. O diagnóstico de pitiose foi confirmado em todos os casos através do teste de imuno-histoquímica em cortes de tecido usando um anticorpo policlonal anti- Pythium insidiosum. Imuno-histoquímica em tecidos fixados em formalina podem ser úteis no diagnóstico de pitiose quando o material submetido não pode ser mais utilizado para cultivo.