Síndrome do abscesso pituitário em bezerros na Região Centro-Oeste

Câmara, Antônio Carlos Lopes; Borges, José Renato Junqueira; Godoy, Roberta Ferro de; Moscardini, Augusto Ricardo Coelho; Mustafa, Vanessa da Silva; Castro, Márcio Botelho de; Ximenes, Fábio Henrique Bezerra; Paludo, Giane Regina; Perecmanis, Simone; Drummond, Vinicius Oliveira

doi:10.1590/s0100-736x2009001100011

Cited by 7 publications

(17 citation statements)

References 10 publications

(37 reference statements)

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“…A discreta leucocitose é sugestiva de processo inflamatório agudo, comumente observado em infecções bacterianas (Câmara et al, 2009). A análise do LCR apresentou-se crucial para o diagnóstico, pois permitiu a observação de moderada quantidade de bactérias e propiciou amostra para a cultura microbiológica.…”

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“…Os achados macroscópicos de coloração amarela clara e aspecto turvo são achados condizentes com o quadro de meningoencefalite (Stokol et al, 2009;Scott, 2010;Câmara et al, 2014). A diferenciação das células nucleadas encontradas no LCR de ruminantes saudáveis é composta quase que exclusivamente por células mononucleares (Scott, 2010), sendo evidenciada a elevação de granulócitos neutrofílicos polimorfonucleados em casos de abscessos cerebrais ou medulares e meningoencefalomielites sépticas (Mayhew, 2009;Stokol et al, 2009;Câmara et al, 2009;2014).…”

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“…No presente caso, também houve o acometimento do tronco encefálico como descrito por Barros et al (2006), entretanto no exame clínico não foi observada insuficiência de nervos cranianos, sendo os achados clínicos neurológicos predominantemente de origem cerebral (Câmara et al, 2009;Mayhew, 2009). …”

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“…Ainda salienta-se que a maior importância da análise do LCR foi realizar o diagnóstico diferencial com outras doenças do SNC que causam sinais clínicos neurológicos semelhantes, dentre elas as enfermidades infecciosas causadas por vírus (raiva e meningoencefalite por herpesvírus bovino-5) ou outras bactérias (como as causadoras de empiema basilar, abscessos cerebrais e listeriose); além de distúrbios nutricionais (intoxicação por chumbo) e metabólicos (polioencefalomalacia) (Barros et al, 2006;Câmara et al, 2009;2014).…”

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“…O tratamento deve se basear na cultura microbiológica e antibiograma, entretanto, na maioria dos casos, o veterinário de campo não dispõe destes exames, ou quando há esta possibilidade, o crescimento e isolamento bacterianos podem delongar o início do tratamento (Fecteau & George, 2004). Assim, a escolha de antimicrobianos de amplo espectro de ação é conduta primordial (Marchen et al, 2005, Lemos & Brum, 2007Câmara et al, 2009). Embora a maioria dos antibióticos não consiga atravessar a membrana hematoencefálica em animais saudáveis, naqueles com inflamação das meninges, esses medicamentos alcançam concentrações satisfatórias no SNC (Mayhew, 2009).…”

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MENINGOENCEFALITE POR Escherichia coli EM CABRITO

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Câmara²,

Oliveira³

et al. 2014

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RESUMO -O presente trabalho objetivou relatar os achados epidemiológicos, clínico-patológicos e laboratoriais de um cabrito de dois meses de idade com meningoencefalite por Escherichia coli. Ao exame clínico observou-se decúbito lateral, vocalização, opistótono, rigidez muscular cervical, opacidade bilateral de córnea, febre (41,3ºC), taquicardia, desidratação, urina avermelhada e movimentos de pedalagem. A hematologia mostrou discreta leucocitose com monocitose absoluta. A bioquímica sérica apresentou-se dentro dos padrões fisiológicos para a espécie. A análise do líquido cefalorraquiano (LCR) revelou aspecto turvo, coloração amarelo claro, pleocitose (598 leucócitos/µL) neutrofílica e presença de bactérias. O animal veio a óbito aproximadamente duas horas após o exame clínico. A necropsia revelou hiperemia, opacidade e presença de exsudato fibrinopurulento nas meninges, sulcos do córtex cerebral e tronco encefálico; e os rins com severa congestão. Microscopicamente, observou-se infiltrado inflamatório misto envolvendo as meninges das regiões do córtex parietal, temporal e tronco encefálico associado a colônias bacterianas. Edema e degeneração neuronal também foram evidentes. A cultura microbiológica de alíquota do LCR permitiu o isolamento de E. coli. Palavras-Chave: doenças bacterianas; Escherichia coli; meningoencefalite; neuropatologia; sistema nervoso central.ABSTRACT -This study aimed to report the epidemiological, clinical-pathological and laboratory findings in a 2-month-old kid with meningoencephalitis by Escherichia coli. Clinical examination revealed lateral recumbency, vocalization, opisthotonos, neck stiffness, bilateral corneal opacity, fever (41.3°C), tachycardia, dehydration, reddish urine and paddling. Hematology revealed light leukocytosis with absolute monocitosis. Serum biochemistry was within physiological standards for the specie. Cerebrospinal fluid (CSF) analysis showed turbid aspect, light yellow coloration, neutrophilic pleocytosis (598 leukocytes/µL) and bacteria. The animal died about two hours after the clinical exam. Necropsy findings consisted of hyperemia, opacity and presence of fibrinopurulent exudate in the meninges, cerebral cortex sulci and brain stem; while the kidneys showed severe congestion. Microscopically, there was a mixed inflammatory infiltrate involving the meninges of the regions of the parietal, temporal cortex and brainstem associated to bacterial colonies. Edema and neuronal degeneration was also noted. Microbiological culture of a CSF aliquot allowed the isolation of E. coli.

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MENINGOENCEFALITE POR Escherichia coli EM CABRITO

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Câmara²,

Oliveira³

et al. 2014

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Decreased pituitary hormone levels in a sheep with pituitary abscess

Dabak

Eröksüz

Baydar

et al. 2014

Journal of Applied Animal Research

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A four-year-old Akkaraman ewe was presented to the Firat University Veterinary Teaching Hospital for circling, dullness, weakness and sternal recumbency. On physical examination, opisthotonus, mydriasis in the right eye and myosis in the left eye, absence of the pupillary reflex, ruminal tympany were detected. Serum pituitary hormone analyses indicated the hypopituitarism characterized by thyroid stimulating hormone (TSH) < 0.05 IU/L, follicle stimulating hormone (FSH) < 0.13 IU/L, luteinizing hormone (LH) < 0.10 IU/L and prolactin (PRL) < 0.50 ng/ml. On the basis of clinical presentation and hypopituitarism, tentative diagnosis of pituitary abscess was made. The animal was euthanized due to the poor prognosis. Morphological examination revealed coexistence of hypophyseal-carotid rete abscess and hyaline thrombosis in carotid rete, heteropic ossification in carotid rete and tuberal muscles. Microbiologically; Arcanobacterium pyogenes was isolated in blood agar culture from the hypophysis. Decreased serum pituitary hormone levels including TSH, FSH, LH and PRL in conjunction with the clinical findings were a useful diagnostic tool for antemortem diagnosis of pituitary abscess in the sheep.

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Cerebrospinal fluid analysis in 58 ruminants showing neurological disorders

et al. 2020

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Ruminants may be affected by a wide variety of central nervous system (CNS) diseases. Cerebrospinal fluid (CSF) analysis forms the basis for ante mortem diagnostic evaluation of ruminants with clinical signs involving the CNS. Despite its importance as a tool to aid diagnosis, data regarding CSF examinations in spontaneous cases of CNS diseases in ruminants from Brazil are limited, and most reports involve experimental studies. Therefore, this study aimed to report the results of CSF analysis in 58 ruminants showing signs of neurological disorders. CSF samples for analysis were obtained from 32 cattle, 20 sheep, and 6 goats by cerebello-medullary cistern (n=54) or lumbosacral space (n=4) puncture. These ruminants showed neurological signs related to viral (n=13), mycotic (n=3), or bacterial (n=15) infections, and toxic (n=21), traumatic (n=4), or congenital disorders (n=2). CSF analysis from ruminants with viral infections presented lymphocytic pleocytosis, even though CSF showed no changes in several cases of rabies. Neutrophilic pleocytosis, cloudiness, presence of fibrin clots, and abnormal coloration were evident in the CSF of most cases of CNS bacterial infection, such as meningoencephalitis, meningitis, abscesses, myelitis, and a case of conidiobolomycosis. On the other hand, CSF was unchanged in most cases of toxic disorders, as botulism and hepatic encephalopathy. Elevated CSF density was observed in 60% of ruminants diagnosed with polioencephalomalacia. Our findings show that evaluation of CSF is a valuable diagnostic tool when used in association with epidemiological, clinical and pathological findings for diagnosis of CNS diseases in ruminants.

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Síndrome do abscesso pituitário em bezerros na Região Centro-Oeste

Cited by 7 publications

References 10 publications

MENINGOENCEFALITE POR Escherichia coli EM CABRITO

MENINGOENCEFALITE POR Escherichia coli EM CABRITO

Decreased pituitary hormone levels in a sheep with pituitary abscess

Cerebrospinal fluid analysis in 58 ruminants showing neurological disorders

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