Resultado da pesquisa (6)
Termo utilizado na pesquisa pituitary
#1 - Pituitary pars intermedia dysfunction in horses associated to pituitary adenoma
Abstract in English:
The clinical syndrome of the pituitary pars intermedia dysfunction (PPID) is the most common endocrinopathy of older horses. This syndrome is characterized by several clinical and pathological changes, which are usually associated with adenomas of the pars intermedia (PI) of the pituitary gland. The aim of this work is to describe five cases of pituitary adenoma of the PI associated with PPID in horses, addressing its clinical and pathological aspects. The horses had a mean of 22 years of age. The main clinical signs were hirsutism and paresis of hind limbs, and at post mortem examination all horses had hirsutism, and a nodule in the pituitary gland, which was histologically characterized as an adenoma of PI (5/5). Furthermore, two horses had gross lesions suggestive of chronic laminitis. Moreover, there was intense parasitism of Sarcocystis neurona (2/5), Strongylus vulgaris (1/5), Parascaris equorum (1/5), Draschia megastoma (1/5), and Klossiella equi (1/5).
Abstract in Portuguese:
A síndrome clínica da disfunção da pars intermedia da hipófise (PPID) é a endocrinopatia mais comum em cavalos idosos. Essa síndrome é caracterizada por várias alterações clínicas e patológicas, geralmente associadas a adenomas da pars intermedia (PI) da hipófise. O objetivo deste trabalho é descrever cinco casos de adenoma hipofisário de PI associado a PPID em equinos, abordando seus aspectos clínicos e patológicos. Os cavalos apresentaram média de 22 anos de idade. Os principais sinais clínicos incluíam hirsutismo e paresia dos membros pélvicos, e no exame post mortem todos os equinos apresentavam hirsutismo e um nódulo na glândula pituitária, que foi histologicamente caracterizada como um adenoma de PI (5/5). Além disso, dois cavalos tinham lesões macroscópicas sugestivas de laminite crônica. Ainda, havia intenso parasitismo de Sarcocystis neurona (2/5), Strongylus vulgaris (1/5), Parascaris equorum (1/5), Draschia megastoma (1/5) e Klossiella equi (1/5).
#2 - Urine protein electrophoresis study in dogs with pituitary dependent hyperadrenocorticism during therapy with trilostane, 37(7):734-740
Abstract in English:
ABSTRACT.- Caragelasco D.S., Kogika M.M., Martorelli C.R., Kanayama K.K. & Simões D. M.N. 2017. Urine protein electrophoresis study in dogs with pituitary dependent hyperadrenocorticism during therapy with trilostane. Pesquisa Veterinária Brasileira 37(7):734-740. Departamento de Clinica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, São Paulo, SP 05508-270, Brazil. E-mail: mv.douglas@usp.br
Hyperadrenocorticism is one of the most common endocrine disorders in dogs. Regarding to the kidneys, chronic hypercortisolemia can cause damage to the glomerulus, and evolve into chronic kidney disease. This study evaluated nine normotensive dogs with pituitary dependent hyperadrenocorticism, before and after therapy with trilostane, during the follow-up period of six months, in order to investigate the development of pathological proteinuria by quantitative (urinary protein-to-creatinine ratio) and qualitative (urinary protein electrophoresis) methods, and also to monitor its intensity over the course of the disease and therapy. The main renal lesion detected in dogs with hyperadrenocorticism was in the tubular segment, evidenced by the prevalence of urinary protein bands of lower molecular weight, indicating the lack absorption of these proteins in the proximal segment of the nephron. Low molecular weight proteins persisted throughout the follow-up. Regarding the future of routine veterinary medical clinic in the care of patients with hyperadrenocorticism, the assessments of proteinuria determinations by the urinary protein-to-creatinin ratio and urinary protein electrophoresis, according to the results obtained in this study, can add more information about the renal damage in these animals, and contribute to the prognosis.
Abstract in Portuguese:
RESUMO.- Caragelasco D.S., Kogika M.M., Martorelli C.R., Kanayama K.K. & Simões D. M.N. 2017. Urine protein electrophoresis study in dogs with pituitary dependent hyperadrenocorticism during therapy with trilostane. Pesquisa Veterinária Brasileira 37(7):734-740. Departamento de Clinica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, São Paulo, SP 05508-270, Brazil. E-mail: mv.douglas@usp.br
Hiperadrenocorticismo (HAC) é uma das doenças endócrinas mais comuns em cães. A hipercortisolemia crônica pode causar danos glomerulares, pelo aumento da taxa de filtração glomerular, podendo levar ao desenvolvimento de doença renal crônica. Este estudo avaliou nove cães normotensos com hiperadrenocorticismo hipófise-dependente, antes e após a terapia com trilostano, durante o período de acompanhamento de seis meses, a fim de investigar o desenvolvimento de proteinúria patológica por métodos quantitativo (relação proteína e creatinina urinária) e qualitativos (eletroforese de proteínas urinárias) e também para monitorar a sua intensidade ao longo do curso da doença e terapia. A principal lesão renal detectada em cães com HAC foi no segmento tubular, evidenciada pela prevalência de bandas de proteínas urinárias de peso molecular mais baixo, indicando a falta de absorção destas proteínas no segmento proximal do néfron. A proteinúria de baixo peso molecular persistiu durante todo o acompanhamento. Em relação ao futuro da rotina clínica médica veterinária no tratamento de cães com hiperadrenocorticismo, as avaliações de proteinúria pela relação proteína e creatinina urinária e eletroforese de proteínas urinárias, de acordo com os resultados obtidos neste estudo, podem adicionar mais informações sobre a lesão renal nestes animais e contribuir para o prognóstico.
#3 - Diseases of the nervous system of cattle in the semiarid of Northeastern Brazil, 30(3):267-276
Abstract in English:
RESUMO.- Galiza G.J.N., Silva M.L.C.R, Dantas A.F.M., Simões S.V.D. & Riet-Correa F. 2010. [Diseases of the nervous system of cattle in the semiarid of Northeastern Brazil.] Doenças do sistema nervoso de bovinos no semiárido nordestino. Pesquisa Veterinária Brasileira 30(3):267-276. Hospital Veterinário, CSTR, Campus de Patos da Universidade Federal de Campina Grande, Patos, PB 58700-000, Brazil. E-mail: franklin.riet@pq.cnpq.br
Para determinar as doenças que ocorrem no sistema nervoso de bovinos no semiárido nordestino, foi realizado um estudo retrospectivo em 411 necropsias de bovinos realizadas no Hospital Veterinário da Universidade Federal de Campina Grande, Patos, Paraíba, entre janeiro de 2000 a dezembro de 2008. Dos 411 casos analisados 139 (33,81%) apresentaram alterações clínicas do sistema nervoso e as fichas foram revisadas para determinar os principais achados referentes à epidemiologia, aos sinais clínicos e às alterações macroscópicas e microscópicas. Em 28 (20,14%) casos o diagnóstico foi inconclusivo. As principais enfermidades foram raiva (48,7% dos casos com sinais nervosos), abscessos cerebrais (7,2%) incluindo três casos de abscesso da pituitária, febre catarral maligna (6,3%), botulismo (6,3%), alterações congênitas (4,5%), traumatismo (4,5%), tuberculose (2,7%), tétano (2,7%), infecção por herpesvírus bovino-5 (2,7%), encefalomielite não supurativa (2,7%), intoxicação por Prosopis juliflora (2,7%), status spongiosus congênito de causa desconhecida (1,8%) e polioencefalomalacia (1,8%). Outras doenças diagnosticadas numa única oportunidade (0,9%) foram criptococose, listeriose, encefalite tromboembólica, linfossarcoma, tripanossomíase e babesiose por Babesia bovis.
Abstract in Portuguese:
ABSTRACT.- Galiza G.J.N., Silva M.L.C.R, Dantas A.F.M., Simões S.V.D. & Riet-Correa F. 2010. [Diseases of the nervous system of cattle in the semiarid of Northeastern Brazil.] Doenças do sistema nervoso de bovinos no semiárido nordestino. Pesquisa Veterinária Brasileira 30(3):267-276. Hospital Veterinário, CSTR, Campus de Patos da Universidade Federal de Campina Grande, Patos, PB 58700-000, Brazil. E-mail: franklin.riet@pq.cnpq.br
Diseases of the nervous system of cattle in the semiarid region of northeastern Brazil were evaluated by a retrospective study of 411 cattle necropsies performed in the Veterinary Hospital of the Federal University of Campina Grande, Patos, Paraíba, from January 2000 to December 2008. Of the 411 cases analyzed, 139 (33.81%) were from cattle that presented nervous signs and the records were reviewed to determine the epidemiological, clinical, and macroscopic and histologic main features. Diagnosis was inconclusive in 28 cases (20.14%). In cases with diagnosis the main diseases were rabies (48.7% of the cases with nervous signs), brain abscesses (7.2%) including three cases of pituitary abscesses, malignant catarrhal fever (6.3%), botulism (6.3%), congenital malformations (4.5%), trauma (4.5%), tuberculosis (2.7%), tetanus (2.7%), infection by bovine hervesvirus-5 (2.7%), non-suppurative encephalomyelitis (2.7%), intoxication by Prosopis juliflora (2.7%), congenital status spongiosus of unknown etiology (1.8%), and polioencephalomalacia (1.8%). Other diseases diagnosed only once (0.9%) were cryptococcosis, listeriosis, thromboembolic encephalitis, lymphosarcoma, trypanosso-miasis, and babesiosis by Babesia bovis.
#4 - Pituitary abscess syndrome in calves from Mid-Western Brazil, 29(11):925-930
Abstract in English:
ABSTRACT.- Câmara A.C.L., Borges J.R.J., Godoy R.F., Moscardini A.R.C., Mustafa V.S., Castro M.B., Ximenes F.H.B., Paludo G.R., Perecmanis S. & Drummond V.O. 2009. [Pituitary abscess syndrome in calves from Mid-Western Brazil.] Síndrome do abscesso pituitário em bezerros na região Centro-Oeste. Pesquisa Veterinária Brasileira 29(11):925-930. Hospital Escola de Grandes Animais da Granja do Torto, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF 70636-200. E-mail: aclcamara@yahoo.com.br
Pituitary abscess syndrome is a neurologic disease responsible for sporadic cases and outbreaks especially in calves leading to high mortality rates. This paper aimed to report the occurrence and the clinical, laboratorial and pathologic findings in three 8 to 11-month-old calves with pituitary abscess syndrome from Mid-Western Brazil. The most important clinical findings were nervous signs of cerebral and brainstem origin with clinical evolution of 7-20 days. Hematology revealed leucocytosis by neutrophilia and hyperfibrinogenemia. Cerebrospinal fluid analysis showed neutrophilic pleocytosis. Arcanobacterium pyogenes was isolated from cerebrospinal fluid. One calf recovered after antibiotic treatment. Mortality rate was 66.6% (2/3). Necropsy findings included single para-hypophyseal abscesses or located in the glandular parenchyma; one calf showed necrotizing rhinitis and another abscedative pneumonia. Histological exams of the central nervous system reveal complete absence of normal pituitary tissue due to the wide necrosis and neutrophilic inflammatory infiltrate. The authors reiterate the importance of adequate management practices to reduce incidence of several diseases especially in calves, including the pituitary abscess syndrome.
Abstract in Portuguese:
RESUMO.- Câmara A.C.L., Borges J.R.J., Godoy R.F., Moscardini A.R.C., Mustafa V.S., Castro M.B., Ximenes F.H.B., Paludo G.R., Perecmanis S. & Drummond V.O. 2009. [Pituitary abscess syndrome in calves from Mid-Western Brazil.] Síndrome do abscesso pituitário em bezerros na região Centro-Oeste. Pesquisa Veterinária Brasileira 29(11):925-930. Hospital Escola de Grandes Animais da Granja do Torto, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF 70636-200. E-mail: aclcamara@yahoo.com.br
A síndrome do abscesso pituitário é uma doença neurológica responsável por casos esporádicos e surtos, principalmente em bezerros, ocasionando alto índice de mortalidade. Descreve-se a ocorrência e os achados clínicos, laboratoriais e anátomo-patológicos em três bezerros com síndrome do abscesso pituitário no Centro-Oeste do Brasil. Os animais tinham 8-11 meses de idade e os sinais clínicos mais marcantes relacionaram-se aos sinais nervosos de origem cerebral e do tronco encefálico com evolução clínica de 7-20 dias. A hematologia revelou leucocitose por neutrofilia e hiperfibrinogenemia. A análise do líquido céfalo-raquidiano apresentou pleocitose neutrofílica. Arcanobacterium pyogenes foi isolado do líquido céfalo-raquidiano. Um dos bezerros apresentou recuperação após antibioticoterapia. A mortalidade foi de 66,6% (2/3). Os achados de necropsia consistiram em um único abscesso de localização parapituitária ou situado no parênquima da glândula; um dos bezerros apresentou rinite necrosante e outro, broncopneumonia abscedativa. O exame histológico do sistema nervoso central revelou ausência quase completa do tecido hipofisário normal, devido à necrose extensa e infiltrado inflamatório neutrofílico difuso concomitante. Reitera-se a importância da realização de práticas de manejo adequadas a fim de reduzir a incidência de inúmeras enfermidades, principalmente em bezerros, dentre elas a síndrome do abscesso pituitário.
#5 - Histomorfologia do gânglio de Gasser, da rete mirabile carotídea e da hipófise de bovinos: estudo de 199 casos
Abstract in English:
ABSTRACT.- Rech R.R., Rissi D.R., Silva M.C., Inkelmann M.A. & Barros C.S.L. 2006. [Histomorphology of the Gasserian ganglion, carotid rete mirabile and pituitary gland in cattle: a study of 199 cases.] Histomorfologia do gânglio de Gasser, da rete mirabile carotídea e da hipófise de bovinos: estudo de 199 casos. Pesquisa Veterinária Brasileira 26(2):105-111. Depto Patologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil. E-mail: claudioslbarros@uol.com.br
The complex of heterogenous tissues formed by the Gasserian ganglia, carotid rete mirabile and pituitary gland (GRH) from 199 cattle were grossly and histologically evaluated. Twenty one of the GRH were from comfirmed cases of rabies, 19 were diagnosed as cases of meningoencephalitis caused by bovine herpesvirus-5 (BoHV-5), 11 were confirmed cases of malignant catarrhal fever (MCF), 7 had pituitary abscesses, 17 had lesions of hepatic encephalopathy (status spongiosus) attributable to chronic liver failure due to Senecio sp poisoning; and the remaining 124 GRH were from cattle which did not present neurological signs and died or were euthanatized due to various causes. No significant histologic changes were observed in the GRH from the 124 cattle which did not present neurological signs, in the GRH of the 17 cattle that had hepatic encephalopathy neither in the GRH of the 19 cattle diagnosed with BoHV-5 meningoencephalitis. Inflammatory changes were found in the Gasserian ganglia of 20 out of 21 cases of rabies and consisted of proliferation of sattelite cells, glial nodules and lymphoplasmacytic infiltrate; degenerative changes included central chromatolysis, neuronal vacuolation, and neuronal death with neuronophagia. Characteristic eosinophilic intracytoplasmatic inclusion (Negri) bodies were found in 19 out of 21 cases of rabies, neuritis of the fifth nerve in 11, and neurohypophysitis in 4 cases. The GRH from nine of the eleven cases of MCF had characteristic necrotizing arteritis affecting the arteries of the carotid rete mirabile. In seven cases pituitary abscesses were found; they were characterized by large aggregates of neutrophils admixed with cellular debris and surrounded by mononuclear cells and were walled by a fibrous capsule. Several incidental findings were observed equally in the 199 histologically examined GRH and consequently were non specific for any disease entity. These include cysts in the pituitary cleft, fibrin and neutrophilic aggregates in the cavernous sinus of the carotid rete mirabile, mildly increased numbers of sattelite cells around neurons of the Gasserian ganglia and occasional neuronal vacuolation and lipofuscinosis. It was concluded that the histological examination of the GRH is an important and reliable tool in the diagnosis of the main forms of encephalitis occurring in cattle in Brazil.
Abstract in Portuguese:
ABSTRACT.- Rech R.R., Rissi D.R., Silva M.C., Inkelmann M.A. & Barros C.S.L. 2006. [Histomorphology of the Gasserian ganglion, carotid rete mirabile and pituitary gland in cattle: a study of 199 cases.] Histomorfologia do gânglio de Gasser, da rete mirabile carotídea e da hipófise de bovinos: estudo de 199 casos. Pesquisa Veterinária Brasileira 26(2):105-111. Depto Patologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil. E-mail: claudioslbarros@uol.com.br
The complex of heterogenous tissues formed by the Gasserian ganglia, carotid rete mirabile and pituitary gland (GRH) from 199 cattle were grossly and histologically evaluated. Twenty one of the GRH were from comfirmed cases of rabies, 19 were diagnosed as cases of meningoencephalitis caused by bovine herpesvirus-5 (BoHV-5), 11 were confirmed cases of malignant catarrhal fever (MCF), 7 had pituitary abscesses, 17 had lesions of hepatic encephalopathy (status spongiosus) attributable to chronic liver failure due to Senecio sp poisoning; and the remaining 124 GRH were from cattle which did not present neurological signs and died or were euthanatized due to various causes. No significant histologic changes were observed in the GRH from the 124 cattle which did not present neurological signs, in the GRH of the 17 cattle that had hepatic encephalopathy neither in the GRH of the 19 cattle diagnosed with BoHV-5 meningoencephalitis. Inflammatory changes were found in the Gasserian ganglia of 20 out of 21 cases of rabies and consisted of proliferation of sattelite cells, glial nodules and lymphoplasmacytic infiltrate; degenerative changes included central chromatolysis, neuronal vacuolation, and neuronal death with neuronophagia. Characteristic eosinophilic intracytoplasmatic inclusion (Negri) bodies were found in 19 out of 21 cases of rabies, neuritis of the fifth nerve in 11, and neurohypophysitis in 4 cases. The GRH from nine of the eleven cases of MCF had characteristic necrotizing arteritis affecting the arteries of the carotid rete mirabile. In seven cases pituitary abscesses were found; they were characterized by large aggregates of neutrophils admixed with cellular debris and surrounded by mononuclear cells and were walled by a fibrous capsule. Several incidental findings were observed equally in the 199 histologically examined GRH and consequently were non specific for any disease entity. These include cysts in the pituitary cleft, fibrin and neutrophilic aggregates in the cavernous sinus of the carotid rete mirabile, mildly increased numbers of sattelite cells around neurons of the Gasserian ganglia and occasional neuronal vacuolation and lipofuscinosis. It was concluded that the histological examination of the GRH is an important and reliable tool in the diagnosis of the main forms of encephalitis occurring in cattle in Brazil.
#6 - Pituitary abscess syndrome in calves following injury of the nasal septum by a plastic device used to prevent suckling, 23(1):39-46
Abstract in English:
ABSTRACT.- Loretti A. P., Ilha M. R. S., Riet-Correa G., Driemeier D., Colodel E. M. & Barros C. S. L. 2002. [Pituitary abscess syndrome in calves following injury of the nasal septum by a plastic device used to prevent suckling.] Síndrome do abscesso pituitário em bezerros associada ao uso de tabuleta nasal para desmame interrompido. Pesquisa Veterinária Brasileira 23(1):39-46. Depto Patologia, Universidade Federal de Santa Maria, Santa Maria, RS 97105- 900, Brazil. E-mail: claudioslbarros@uol.corn.br
Outbreaks and sporadic cases of the pituitary abscess syndrome are described in calves in the state of Rio Grande do Sul, southern Brazil. The disease occurred in eight beef cattle farms in the rnunicipalities of Cachoeira do Sul, Lavras do Sul, Bagé, Osório and Vila Nova do Sul, from 1998 to 2002. Thirty-five (1.4%) out of 2,438 calves with 3-12 rnonths of age were affected and 24 (0.98%) died. A nasal plastic device to prevent suckling had been used in all the affected calves. Clinicai signs consisted of nasal discharge, depression, hypertherrnia, ataxia, circling, head tilt and hyperrnetria, exophtalrnos, dysphagia, partial mandibular paralysis, prolapse of the tangue, difficulty in chewing, drooling and in some cases blindness accompanied or not by aqueous flare, prolapse of the ocular globe and corneal opacity. ln the terminal stages of the disease, there was lateral recumbency, opisthotonus and coma. The main necropsy findings included single large hypophyseal or para-hypophyseal abscesses. Those space-occupying lesions dorsally compressed the brain stem and the cranial nerves adjacent to the hypophysis. In sorne cases, there was also osteornyelitis of the basisphenoid bone, single or rnultiple brain abscesses and leptomeningitis affecting the ventral surface of the brain stern and cervical spinal cord. In a few cases, necrotizing or abscedative rhinitis associated with nose device injury was observed. Histologically, those abscesses consisted mainly of neutrophils adrnixed with cellular debris surrounded by numerous mononuclear cells anda fibrous capsule. Fibrino-suppurative rneningitis affecting the leptorneninges of the cerebellum, brain stem and cervical spinal cord was also observed. In some cases, purulent inflammation extended into the hypophyseal parenchyma. Arcanobacterium (Actinomyces) pyogenes was isolated from the abscesses. The diagnosis of pituitary abscess syndrome was based on epidemiological data, clinicai signs, necropsy findings, histological alterations and bacterial cultures.
Abstract in Portuguese:
RESUMO.- Loretti A. P., Ilha M. R. S., Riet-Correa G., Driemeier D., Colodel E. M. & Barros C. S. L. 2002. [Pituitary abscess syndrome in calves following injury of the nasal septum by a plastic device used to prevent suckling.] Síndrome do abscesso pituitário em bezerros associada ao uso de tabuleta nasal para desmame interrompido. Pesquisa Veterinária Brasileira 23(1):39-46. Depto Patologia, Universidade Federal de Santa Maria, Santa Maria, RS 97105- 900, Brazil. E-mail: claudioslbarros@uol.corn.br
Descrevem-se surtos e casos esporádicos de síndrome do abscesso pituitário em bovinos no Estado do Rio Grande do Sul. A doença ocorreu em 8 propriedades de gado de corte, nos municípios de Cachoeira do Sul, Lavras do Sul, Bagé, Osório e Vila Nova do Sul, no período de 1998 a 2002. De um total de 2.438 bezerros submetidos ao desmame interrompido com o uso da tabuleta nasal, aproximadamente 35 (1,4%) animais adoeceram e 24 (0,98%) morreram. A idade dos bezerros afetados variava entre 3 e 12 meses. Os animais doentes apresentavam corrimento nasal, depressão, febre, incoordenação motora, andar em círculos, desvio lateral da cabeça, hipermetria, exoftalmia, disfagia, mandíbula caída, protusão lingual, dificuldade de mastigação e sialorréia. Em alguns casos, observou-se também cegueira, acompanhada ou não de turvação dos humores do globo ocular, exoftalmia e opacidade da córnea. Nas fases terminais, ocorriam decúbito lateral, convulsões, nistagmo, opistótono, coma e morte. Os principais achados de necropsia consistiam em abscessos únicos pituitários ou parapituitários que comprimiam dorsalniente o tronco encefálico e nervos cranianos próximos à pituitária. Em alguns casos, havia osteomielite envolvendo o osso baso-esfenóide com a formação de abscessos na substância encefálica, leptomeningite na superfície ventral do encéfalo e medula espinhal cervical e rinite necrosante ou abscedativa associada às lesões traumáticas provocadas pela colocação da tabuleta nasal. Histologicamente, os abscessos correspondiam a grandes agregados de neutrófilos e restos celulares circundados por células mononucleares e proliferação de tecido conjuntivo. Meningite fibrinopurulenta nas leptomeninges do cerebelo, tronco encefálico e medula espinhal cervical também foi observada. Em alguns casos, a inflamação purulenta se estendia para o parênquima da pituitária. Arcanobacterium (Actinomyces) pyogenes foi isolado dos abscessos. O diagnóstico de síndrome do abscesso pituitário foi baseado nos dados epidemiológicos, sinais clínicos, achados macroscópicos, histológicos e microbiológicos.
