Selwyn Headley | Universidade Estadual de Londrina (original) (raw)
Papers by Selwyn Headley
Ciência Rural
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Chronic copper poisoning (CCP) in sheep is a severe disease that occurs worldwide. This paper des... more Chronic copper poisoning (CCP) in sheep is a severe disease that occurs worldwide. This paper describes the pathological lesions of CCP that occurred in a flock of sheep from Northern Paraná, Southern Brazil. Seven, cross-breed Merino sheep, out of a flock of 14 were affected. Most of these animals demonstrated muscular tremors, nervous symptoms, difficult breathing, and died within 24-48 after the onset of clinical signs. Gross lesions were characterized by generalized icterus, hemoglobinuria, dark colored kidneys, and a softened spleen. Histological findings included tubular renal necrosis, centrilobular hepatic necrosis, and status spongiosis of the white matter of the brain; toxicological evaluation of the liver confirmed CCP. Intoxicação crônica por cobre (ICC) é uma doença severa de ocorrência mundial. Este artigo descreve as alterações patológicas de ICC que ocorreram em um rebanho de ovinos no norte do Paraná, Brasil. Sete ovinos, cruzados Merino, de um rebanho de quatorze f...
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The objective of this study was to compare the influence of butorphanol and phetidine as part of ... more The objective of this study was to compare the influence of butorphanol and phetidine as part of the preanesthetic medication, in 20 healthy dogs submitted to experimental orthopedic surgery. Dogs were randomly allocated in two groups: GI, acepromazine and butorphanol (0,05 mg.kg 1 and 0,4 mg.kg 1, respectively, i.m.) and, GII, acepromazine and phetidine (0,05 mg.kg 1and 4 mg.kg 1, respectively, i.m.). Anesthesia was induced by administration of propofol (5 mg.kg 1) and maintained by the use of sevoflurane delivered in a 100% oxygen circuit. Plasma concentrations of cortisol and glucose were measured during several surgical procedures: T0, before preanesthetic medication; T1, 20 minutes after preanesthetic medication; T2, at skin incision; T3, at periostal stimulation; and, T4, at skin suture. Concentrations of plasma glucose were not significantly different between the surgical procedures and between the two groups evaluated. Concentrations of plasma cortisol were significantly hig...
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Gross and histopathological lesions associated with Mycobacterium bovis in an ox are described. D... more Gross and histopathological lesions associated with Mycobacterium bovis in an ox are described. Differential diagnoses of frequently occurring gross lesions in cattle that could be easily confused with bovine tuberculosis are discussed, and a comparative analysis of M. bovis induced tuberculosis lesions in wildlife is made. Alterações macroscópicas e histopatológicas associadas a Mycobacterium bovis são descritas em um bovino. O diagnóstico diferencial de lesões macroscópicas mais freqüentemente encontradas em bovinos que podem ser confundidas com a tuberculose bovina é discutida. Uma análise comparativa de lesões induzidas por M. bovis em animais silvestres foi realizada.
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Spina bifida is a congenital spinal deformity that is characterized by an incomplete closure of t... more Spina bifida is a congenital spinal deformity that is characterized by an incomplete closure of the dorsal portion of the vertebrate. This report describes the radiological and pathological findings of this abnormality in a dead still birth mongrel. The dog demonstrated a cleft at the dorsal region of the thoracic vertebrate column, which resulted in exposition and protrusion of the spinal cord and the meninges. Plain radiographs of the ventral-dorsal of the vertebrate column revealed a defect in the fusion of the dorsal spinous processes of the distal thoracic vertebrates (T6 – T13); while the right-lateral view revealed xyphosis of the entire lumbar region of the spine. A espinha bífida é uma deformidade congênita caracterizada pelo incompleto fechamento da porção dorsal de uma ou mais vértebras. O presente caso descreve as alterações radiológicas e patológicas de um cão natimorto sem raça definida. O animal apresentava uma fissura nas vértebras torácicas, resultando em exposição ...
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Pesquisa Veterinária Brasileira, 2015
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Semina: Ciências Agrárias, 2005
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Pesquisa Veterinária Brasileira
Molecular findings that confirmed the participation of ovine herpesvirus 2 (OVH-2) in the lesions... more Molecular findings that confirmed the participation of ovine herpesvirus 2 (OVH-2) in the lesions that were consistent with those observed in malignant catarrhal fever of cat¬tle are described. Three mixed breed cattle from Rio Grande do Norte state demonstra¬ted clinical manifestations that included mucopurulent nasal discharge, corneal opacity and motor incoordination. Routine necropsy examination demonstrated ulcerations and hemorrhage of the oral cavity, corneal opacity, and lymph node enlargement. Significant histopathological findings included widespread necrotizing vasculitis, non-suppurative meningoencephalitis, lymphocytic interstitial nephritis and hepatitis, and thrombosis. PCR assay performed on DNA extracted from kidney and mesenteric lymph node of one animal amplified a product of 423 base pairs corresponding to a target sequence within the ovi¬ne herpesvirus 2 (OVH-2) tegument protein gene. Direct sequencing of the PCR products, from extracted DNA of the kidney and me...
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Parasites & Vectors
The characterization of proteins released from filariae is an important step in addressing many o... more The characterization of proteins released from filariae is an important step in addressing many of the needs in the diagnosis and treatment of these clinically important parasites, as well as contributing to a clearer understanding of their biology. This report describes findings on the proteins released during in vitro cultivation of adult Dirofilaria immitis , the causative agent of canine and feline heartworm disease. Differences in protein secretion among nematodes in vivo may relate to the ecological niche of each parasite and the pathological changes that they induce. The proteins in the secretions of cultured adult worms were run on Tris-Glycine gels, bands separated and peptides from each band analysed by ultra mass spectrometry and compared with a FastA dataset of predicted tryptic peptides derived from a genome sequence of D. immitis. This study identified 110 proteins. Of these proteins, 52 were unique to D. immitis . A total of 23 (44%) were recognized as proteins likely...
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Research in Veterinary Science
This study investigated the occurrence of rotavirus infections in ostriches (Struthio camelus) re... more This study investigated the occurrence of rotavirus infections in ostriches (Struthio camelus) reared in Northern Paraná, Brazil. Fecal (n=66) and serum (n=182) samples from nine farms located in four different cities were analyzed by silver stained-polyacrylamide gel electrophoresis (ss-PAGE), RT-PCR assay, virus isolation, and counterimmunoelectroosmophoresis (CIE). Rotavirus group A seropositivity occurred in 5.49% (10/182) of serum samples of ostriches originated from two farms. Only 9.09% (6/66) of fecal samples from ostriches with diarrhea maintained in one farm were positive by ss-PAGE, RT-PCR, and virus isolation. The G (VP7) and P (VP4) genotypes of rotavirus wild strains isolated in cell culture were determined by multiplex-nested PCR. The genotyping identified two rotavirus strains: G6P[1] and G10P[1]. In three rotavirus strains it was only possible to identify the P type; one strain being P[1] and two strains that presented the combination of P[1]+P[7]. These findings mi...
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Journal of veterinary science (Suwŏn-si, Korea)
This report describes the naturally occurring atypical neuropathological manifestation of systemi... more This report describes the naturally occurring atypical neuropathological manifestation of systemic canine distemper virus (CDV) infection in two 16-day-old Pit Bull pups. CDV-induced changes affected the gray and white matter of the forebrain while sparing the hindbrain. Histologically, there was necrosis with destruction of the nervous parenchyma due to an influx of inflammatory and reactive cells associated with eosinophilic intranuclear inclusion bodies within glial cells. Positive immunoreactivity against CDV antigens was predominantly observed within astrocytes and neurons. RT-PCR was used to amplify CDV-specific amplicons from brain fragments. These findings suggest the participation of CDV in the etiopathogenesis of these lesions.
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Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria mo... more Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria monocytogenes. Ruminants either demonstrate manifestations of the encephalitic, septicemic, or reproductive form of listeriosis. The pathological and molecular findings with encephalitic listeriosis in a 5.5-month-old, male, mixed-breed goat and a 3-year-old Texel-crossed sheep from northern Paraná, Brazil are described. Clinically, the kid demonstrated circling, lateral protrusion of the tongue, head tilt, and convulsions; the ewe presented ataxia, motor incoordination, and lateral decumbency. Brainstem dysfunctions were diagnosed clinically and listeriosis was suspected. Necropsy performed on both animals did not reveal remarkable gross lesions; significant histopathological alterations were restricted to the brainstem (medulla oblongata; rhombencephalitis) and were characterized as meningoencephalitis that consisted of extensive mononuclear perivascular cuffings, neutrophilic and macrop...
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Journal of Helminthology
The occurrence of platynosomiasis and intestinal sparganosis is described in feral cats from Gran... more The occurrence of platynosomiasis and intestinal sparganosis is described in feral cats from Grand Cayman, Cayman Islands. Spirometra spp. was observed within the intestine of 18.18% (10/55) of cats; 1.18% (1/55) of cats demonstrated gross and histological manifestation of parasitism by Platynosomum fastosum, but 14.5% (8/55) of cats had the characteristic pathological manifestations of P. fastosum-induced intrahepatic cholangitis without the concomitant presence of the intraductal trematode. Combined parasitism (Spirometra spp. and P. fastosum) was observed in 9.09% (5/55) of feral cats. Significant pathological findings were only associated with the hepatic fluke, P. fastosum, and were grossly characterized by moderate hepatomegaly with enlarged and dilated bile ducts. Examples of cestodes with morphological features characteristic of Spirometra spp. were observed within the small intestine without any associated pathological lesion. The histopathological evaluation of liver fragm...
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The evaluation of enteric viruses in asymptomatic free-ranging non-human primates (Alouatta guari... more The evaluation of enteric viruses in asymptomatic free-ranging non-human primates (Alouatta guariba clamitans, Alouatta caraya, Callithrix spp., Callithrix penicillata, and Leontopithecus caissara) in southern Brazil Abstract Background This study evaluated the presence of rotavirus groups A, B, and C (RV-A, RV-B, and RV-C), sapovirus (SaV), and norovirus (NoV) in asymptomatic non-human primates (NHP). Methods Fecal samples were collected from 19 recently captured (Red-how-ler, Alouatta guariba clamitans, n = 18; Howler, Alouatta caraya, n = 1) and 43 free-ranging NHP (Marmosets, Callithrix spp., Callithrix penicillata, n = 30; Black-faced lion tamarin, Leontopithecus caissara, n = 12, Red-how-ler, Alouatta guariba clamitans, n = 1) that were maintained in southern Bra-zil without manifestation of diarrhea. Screening was performed by a combination of silver-stained polyacrylamide gel electrophoresis (ss-PAGE) and RT-PCR analyses. Results All samples were negative for RV-A, RV-B, RV-...
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Após a descoberta da melatonina por Lerner et al. (1958), novas pesquisas e perspectivas surgiram... more Após a descoberta da melatonina por Lerner et al. (1958), novas pesquisas e perspectivas surgiram tornando a pineal uma estrutura mais estudada. Além disso, sabe-se que este hormônio está relacionado com o controle circadiano e outras funções comportamentais fisiológicas como o ciclo reprodutivo e termorregulação. Neste trabalho, foram utilizados 20 cães e estudamos a morfologia das glândulas, empregando uma análise macroscópica e microscópica. O formato das pineais variou de cônico a glossóide (em relação à língua humana); cor entre bege e marrom-acinzentado e apresentaram consistência gelatinosa. A largura e o comprimento das glândulas variaram respectivamente de 1,38 a 2,39 mm e de 1,53 a 2,96 mm. Quanto à microscopia, utilizamos coloração de eosina-hematoxilina (HE), e em todas as pineais observamos a presença dos seguintes componentes: cápsula; septos ou trabéculas pinealócitos; células da glia; grânulos de pigmentos, e não foram notadas concreções calcáreas. Following the disc...
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Mycopathologia, Jan 30, 2015
Cryptococcus gattii-induced cryptococcosis is an emerging infectious disease of humans and animal... more Cryptococcus gattii-induced cryptococcosis is an emerging infectious disease of humans and animals worldwide, with rare descriptions of this infection in domestic animals from Brazil. This study presents the findings associated with C. gattii in dogs from Londrina, Paraná, Southern Brazil. Two dogs, a 3-year-old, female German shepherd and a 6-year-old, male Boxer, were evaluated by a combination of pathological, mycological, and molecular diagnostic techniques. Significant pathological alterations included cryptococcal lymphadenitis, meningoencephalitis, tonsillitis, and rhinitis with nasal cryptococcomas in the German shepherd dog, while cryptococcal lymphadenitis and pneumonia were observed in the Boxer; both dogs had pseudocystic cryptococcosis. The mucicarmine histochemical stain readily identified the intralesional cryptococcal budding organisms in all affected tissues. Mycological culture and isolation confirmed the yeasts as C. gattii due to positive reaction with the L-cana...
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The Veterinary record, Jan 16, 2006
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The Veterinary record, Jan 12, 2005
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Ciência Rural
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Chronic copper poisoning (CCP) in sheep is a severe disease that occurs worldwide. This paper des... more Chronic copper poisoning (CCP) in sheep is a severe disease that occurs worldwide. This paper describes the pathological lesions of CCP that occurred in a flock of sheep from Northern Paraná, Southern Brazil. Seven, cross-breed Merino sheep, out of a flock of 14 were affected. Most of these animals demonstrated muscular tremors, nervous symptoms, difficult breathing, and died within 24-48 after the onset of clinical signs. Gross lesions were characterized by generalized icterus, hemoglobinuria, dark colored kidneys, and a softened spleen. Histological findings included tubular renal necrosis, centrilobular hepatic necrosis, and status spongiosis of the white matter of the brain; toxicological evaluation of the liver confirmed CCP. Intoxicação crônica por cobre (ICC) é uma doença severa de ocorrência mundial. Este artigo descreve as alterações patológicas de ICC que ocorreram em um rebanho de ovinos no norte do Paraná, Brasil. Sete ovinos, cruzados Merino, de um rebanho de quatorze f...
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The objective of this study was to compare the influence of butorphanol and phetidine as part of ... more The objective of this study was to compare the influence of butorphanol and phetidine as part of the preanesthetic medication, in 20 healthy dogs submitted to experimental orthopedic surgery. Dogs were randomly allocated in two groups: GI, acepromazine and butorphanol (0,05 mg.kg 1 and 0,4 mg.kg 1, respectively, i.m.) and, GII, acepromazine and phetidine (0,05 mg.kg 1and 4 mg.kg 1, respectively, i.m.). Anesthesia was induced by administration of propofol (5 mg.kg 1) and maintained by the use of sevoflurane delivered in a 100% oxygen circuit. Plasma concentrations of cortisol and glucose were measured during several surgical procedures: T0, before preanesthetic medication; T1, 20 minutes after preanesthetic medication; T2, at skin incision; T3, at periostal stimulation; and, T4, at skin suture. Concentrations of plasma glucose were not significantly different between the surgical procedures and between the two groups evaluated. Concentrations of plasma cortisol were significantly hig...
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Gross and histopathological lesions associated with Mycobacterium bovis in an ox are described. D... more Gross and histopathological lesions associated with Mycobacterium bovis in an ox are described. Differential diagnoses of frequently occurring gross lesions in cattle that could be easily confused with bovine tuberculosis are discussed, and a comparative analysis of M. bovis induced tuberculosis lesions in wildlife is made. Alterações macroscópicas e histopatológicas associadas a Mycobacterium bovis são descritas em um bovino. O diagnóstico diferencial de lesões macroscópicas mais freqüentemente encontradas em bovinos que podem ser confundidas com a tuberculose bovina é discutida. Uma análise comparativa de lesões induzidas por M. bovis em animais silvestres foi realizada.
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Spina bifida is a congenital spinal deformity that is characterized by an incomplete closure of t... more Spina bifida is a congenital spinal deformity that is characterized by an incomplete closure of the dorsal portion of the vertebrate. This report describes the radiological and pathological findings of this abnormality in a dead still birth mongrel. The dog demonstrated a cleft at the dorsal region of the thoracic vertebrate column, which resulted in exposition and protrusion of the spinal cord and the meninges. Plain radiographs of the ventral-dorsal of the vertebrate column revealed a defect in the fusion of the dorsal spinous processes of the distal thoracic vertebrates (T6 – T13); while the right-lateral view revealed xyphosis of the entire lumbar region of the spine. A espinha bífida é uma deformidade congênita caracterizada pelo incompleto fechamento da porção dorsal de uma ou mais vértebras. O presente caso descreve as alterações radiológicas e patológicas de um cão natimorto sem raça definida. O animal apresentava uma fissura nas vértebras torácicas, resultando em exposição ...
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Pesquisa Veterinária Brasileira, 2015
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Semina: Ciências Agrárias, 2005
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Pesquisa Veterinária Brasileira
Molecular findings that confirmed the participation of ovine herpesvirus 2 (OVH-2) in the lesions... more Molecular findings that confirmed the participation of ovine herpesvirus 2 (OVH-2) in the lesions that were consistent with those observed in malignant catarrhal fever of cat¬tle are described. Three mixed breed cattle from Rio Grande do Norte state demonstra¬ted clinical manifestations that included mucopurulent nasal discharge, corneal opacity and motor incoordination. Routine necropsy examination demonstrated ulcerations and hemorrhage of the oral cavity, corneal opacity, and lymph node enlargement. Significant histopathological findings included widespread necrotizing vasculitis, non-suppurative meningoencephalitis, lymphocytic interstitial nephritis and hepatitis, and thrombosis. PCR assay performed on DNA extracted from kidney and mesenteric lymph node of one animal amplified a product of 423 base pairs corresponding to a target sequence within the ovi¬ne herpesvirus 2 (OVH-2) tegument protein gene. Direct sequencing of the PCR products, from extracted DNA of the kidney and me...
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Parasites & Vectors
The characterization of proteins released from filariae is an important step in addressing many o... more The characterization of proteins released from filariae is an important step in addressing many of the needs in the diagnosis and treatment of these clinically important parasites, as well as contributing to a clearer understanding of their biology. This report describes findings on the proteins released during in vitro cultivation of adult Dirofilaria immitis , the causative agent of canine and feline heartworm disease. Differences in protein secretion among nematodes in vivo may relate to the ecological niche of each parasite and the pathological changes that they induce. The proteins in the secretions of cultured adult worms were run on Tris-Glycine gels, bands separated and peptides from each band analysed by ultra mass spectrometry and compared with a FastA dataset of predicted tryptic peptides derived from a genome sequence of D. immitis. This study identified 110 proteins. Of these proteins, 52 were unique to D. immitis . A total of 23 (44%) were recognized as proteins likely...
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Research in Veterinary Science
This study investigated the occurrence of rotavirus infections in ostriches (Struthio camelus) re... more This study investigated the occurrence of rotavirus infections in ostriches (Struthio camelus) reared in Northern Paraná, Brazil. Fecal (n=66) and serum (n=182) samples from nine farms located in four different cities were analyzed by silver stained-polyacrylamide gel electrophoresis (ss-PAGE), RT-PCR assay, virus isolation, and counterimmunoelectroosmophoresis (CIE). Rotavirus group A seropositivity occurred in 5.49% (10/182) of serum samples of ostriches originated from two farms. Only 9.09% (6/66) of fecal samples from ostriches with diarrhea maintained in one farm were positive by ss-PAGE, RT-PCR, and virus isolation. The G (VP7) and P (VP4) genotypes of rotavirus wild strains isolated in cell culture were determined by multiplex-nested PCR. The genotyping identified two rotavirus strains: G6P[1] and G10P[1]. In three rotavirus strains it was only possible to identify the P type; one strain being P[1] and two strains that presented the combination of P[1]+P[7]. These findings mi...
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Journal of veterinary science (Suwŏn-si, Korea)
This report describes the naturally occurring atypical neuropathological manifestation of systemi... more This report describes the naturally occurring atypical neuropathological manifestation of systemic canine distemper virus (CDV) infection in two 16-day-old Pit Bull pups. CDV-induced changes affected the gray and white matter of the forebrain while sparing the hindbrain. Histologically, there was necrosis with destruction of the nervous parenchyma due to an influx of inflammatory and reactive cells associated with eosinophilic intranuclear inclusion bodies within glial cells. Positive immunoreactivity against CDV antigens was predominantly observed within astrocytes and neurons. RT-PCR was used to amplify CDV-specific amplicons from brain fragments. These findings suggest the participation of CDV in the etiopathogenesis of these lesions.
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Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria mo... more Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria monocytogenes. Ruminants either demonstrate manifestations of the encephalitic, septicemic, or reproductive form of listeriosis. The pathological and molecular findings with encephalitic listeriosis in a 5.5-month-old, male, mixed-breed goat and a 3-year-old Texel-crossed sheep from northern Paraná, Brazil are described. Clinically, the kid demonstrated circling, lateral protrusion of the tongue, head tilt, and convulsions; the ewe presented ataxia, motor incoordination, and lateral decumbency. Brainstem dysfunctions were diagnosed clinically and listeriosis was suspected. Necropsy performed on both animals did not reveal remarkable gross lesions; significant histopathological alterations were restricted to the brainstem (medulla oblongata; rhombencephalitis) and were characterized as meningoencephalitis that consisted of extensive mononuclear perivascular cuffings, neutrophilic and macrop...
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Journal of Helminthology
The occurrence of platynosomiasis and intestinal sparganosis is described in feral cats from Gran... more The occurrence of platynosomiasis and intestinal sparganosis is described in feral cats from Grand Cayman, Cayman Islands. Spirometra spp. was observed within the intestine of 18.18% (10/55) of cats; 1.18% (1/55) of cats demonstrated gross and histological manifestation of parasitism by Platynosomum fastosum, but 14.5% (8/55) of cats had the characteristic pathological manifestations of P. fastosum-induced intrahepatic cholangitis without the concomitant presence of the intraductal trematode. Combined parasitism (Spirometra spp. and P. fastosum) was observed in 9.09% (5/55) of feral cats. Significant pathological findings were only associated with the hepatic fluke, P. fastosum, and were grossly characterized by moderate hepatomegaly with enlarged and dilated bile ducts. Examples of cestodes with morphological features characteristic of Spirometra spp. were observed within the small intestine without any associated pathological lesion. The histopathological evaluation of liver fragm...
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The evaluation of enteric viruses in asymptomatic free-ranging non-human primates (Alouatta guari... more The evaluation of enteric viruses in asymptomatic free-ranging non-human primates (Alouatta guariba clamitans, Alouatta caraya, Callithrix spp., Callithrix penicillata, and Leontopithecus caissara) in southern Brazil Abstract Background This study evaluated the presence of rotavirus groups A, B, and C (RV-A, RV-B, and RV-C), sapovirus (SaV), and norovirus (NoV) in asymptomatic non-human primates (NHP). Methods Fecal samples were collected from 19 recently captured (Red-how-ler, Alouatta guariba clamitans, n = 18; Howler, Alouatta caraya, n = 1) and 43 free-ranging NHP (Marmosets, Callithrix spp., Callithrix penicillata, n = 30; Black-faced lion tamarin, Leontopithecus caissara, n = 12, Red-how-ler, Alouatta guariba clamitans, n = 1) that were maintained in southern Bra-zil without manifestation of diarrhea. Screening was performed by a combination of silver-stained polyacrylamide gel electrophoresis (ss-PAGE) and RT-PCR analyses. Results All samples were negative for RV-A, RV-B, RV-...
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Após a descoberta da melatonina por Lerner et al. (1958), novas pesquisas e perspectivas surgiram... more Após a descoberta da melatonina por Lerner et al. (1958), novas pesquisas e perspectivas surgiram tornando a pineal uma estrutura mais estudada. Além disso, sabe-se que este hormônio está relacionado com o controle circadiano e outras funções comportamentais fisiológicas como o ciclo reprodutivo e termorregulação. Neste trabalho, foram utilizados 20 cães e estudamos a morfologia das glândulas, empregando uma análise macroscópica e microscópica. O formato das pineais variou de cônico a glossóide (em relação à língua humana); cor entre bege e marrom-acinzentado e apresentaram consistência gelatinosa. A largura e o comprimento das glândulas variaram respectivamente de 1,38 a 2,39 mm e de 1,53 a 2,96 mm. Quanto à microscopia, utilizamos coloração de eosina-hematoxilina (HE), e em todas as pineais observamos a presença dos seguintes componentes: cápsula; septos ou trabéculas pinealócitos; células da glia; grânulos de pigmentos, e não foram notadas concreções calcáreas. Following the disc...
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Mycopathologia, Jan 30, 2015
Cryptococcus gattii-induced cryptococcosis is an emerging infectious disease of humans and animal... more Cryptococcus gattii-induced cryptococcosis is an emerging infectious disease of humans and animals worldwide, with rare descriptions of this infection in domestic animals from Brazil. This study presents the findings associated with C. gattii in dogs from Londrina, Paraná, Southern Brazil. Two dogs, a 3-year-old, female German shepherd and a 6-year-old, male Boxer, were evaluated by a combination of pathological, mycological, and molecular diagnostic techniques. Significant pathological alterations included cryptococcal lymphadenitis, meningoencephalitis, tonsillitis, and rhinitis with nasal cryptococcomas in the German shepherd dog, while cryptococcal lymphadenitis and pneumonia were observed in the Boxer; both dogs had pseudocystic cryptococcosis. The mucicarmine histochemical stain readily identified the intralesional cryptococcal budding organisms in all affected tissues. Mycological culture and isolation confirmed the yeasts as C. gattii due to positive reaction with the L-cana...
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The Veterinary record, Jan 16, 2006
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The Veterinary record, Jan 12, 2005
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