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Ferreira LVDO, Rocha TG, Takahira RK, Laufer-Amorim R, Machado VMDV, Ribeiro MG, Pereira WAB, Oliveira-Filho JP, Borges AS, Amorim RM. Brain Abscesses in Domestic Ruminants: Clinicopathological and Bacteriological Approaches. Microorganisms 2024; 12:1424. [PMID: 39065192 PMCID: PMC11279287 DOI: 10.3390/microorganisms12071424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/19/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024] Open
Abstract
Brain abscesses in ruminants often arise from primary infection foci, leading to an unfavorable prognosis for affected animals. This highlights the need for comprehensive studies on brain abscesses across different ruminant species. We retrospectively investigated medical records of epidemiological, clinical, neuroimaging, anatomopathological, and bacteriological findings in six ruminants (three goats, two cows, and one sheep) diagnosed with brain abscesses. All animals studied were female. Apathy (50%), compulsive walking (33%), decreased facial sensitivity (33%), head pressing (33%), seizures (33%), semicomatous mental status (33%), strabismus (33%), unilateral blindness (33%), and circling (33%) represented the most common neurologic signs. Leukocytosis and neutrophilia were the main findings in the hematological evaluation. Cerebrospinal fluid (CSF) analysis revealed predominant hyperproteinorrachia and pleocytosis. In three cases, computed tomography or magnetic resonance imaging were used, enabling the identification of typical abscess lesions, which were subsequently confirmed during postmortem examination. Microbiological culture of the abscess samples and/or CSF revealed bacterial coinfections in most cases. Advanced imaging examinations, combined with CSF analysis, can aid in diagnosis, although confirmation typically relies on postmortem evaluation and isolation of the causative agent. This study contributes to clinicopathological aspects, neuroimages, and bacteriological diagnosis of brain abscesses in domestic ruminants.
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Affiliation(s)
- Lucas Vinícius de Oliveira Ferreira
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Thaís Gomes Rocha
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Regina Kiomi Takahira
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Renée Laufer-Amorim
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Vânia Maria de Vasconcelos Machado
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil
| | - Márcio Garcia Ribeiro
- Department of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil
| | - Wanderson Adriano Biscola Pereira
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - José Paes Oliveira-Filho
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Alexandre Secorun Borges
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
| | - Rogério Martins Amorim
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, SP, Brazil; (L.V.d.O.F.)
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Malmström E, Cole RC, Hofmeister EH, Stern JK, Passler T. Comparison of atlantoaxial and lumbosacral cerebrospinal fluid centesis techniques in South American camelids. J Vet Intern Med 2024; 38:1232-1239. [PMID: 38407387 PMCID: PMC10937480 DOI: 10.1111/jvim.17023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 02/02/2024] [Indexed: 02/27/2024] Open
Abstract
BACKGROUND Iatrogenic blood contamination during cerebrospinal fluid (CSF) centesis is common, which can limit the diagnostic usefulness of the sample. A novel ultrasound-guided CSF collection technique is described in horses, by which CSF is obtained from the atlantoaxial (AA) space. HYPOTHESIS/OBJECTIVES To compare ultrasound-guided AA centesis with lumbosacral (LS) centesis in South American camelids (SAC). The hypotheses were that AA centesis would yield samples with less blood contamination although being technically more challenging than LS centesis. ANIMALS Eight clinically healthy adult SAC from a university-owned teaching herd. METHODS Single-blinded, randomized, 4-way, 4-period crossover study in which 2 veterinarians each performed both centesis techniques on each animal once. Cytological sample analysis was performed, and the technical difficulty of sample acquisition was assessed. RESULTS The CSF was collected successfully and without complications by either technique during all collection attempts. Aspects of technical difficulty and concentrations of CSF analytes did not vary significantly between techniques. Median total nucleated cell and red blood cell counts were 1/μL and 0.5/μL and 167.5/μL and 155/μL for AA and LS techniques, respectively. The median total protein concentration was 32.9 mg/dL and 38 mg/dL for AA and LS centeses. A median of 1 attempt was necessary for both centesis techniques and the median number of needle repositioning events was 1 for AA and 0 for LS. CONCLUSION AND CLINICAL IMPORTANCE Depending on clinical circumstances, ultrasound-guided AA centesis appears to be an acceptable alternative to other techniques for collection of CSF from SAC.
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Affiliation(s)
- Ester Malmström
- Department of Forestry and Wildlife ManagementInland Norway University of Applied SciencesEvenstadNorway
- Department of Clinical Sciences, JT Vaughan Large Animal Teaching Hospital, College of Veterinary MedicineAuburn UniversityAuburnAlabamaUSA
| | - Robert C. Cole
- Department of Clinical Sciences, JT Vaughan Large Animal Teaching Hospital, College of Veterinary MedicineAuburn UniversityAuburnAlabamaUSA
| | - Erik H. Hofmeister
- Department of Clinical Sciences, JT Vaughan Large Animal Teaching Hospital, College of Veterinary MedicineAuburn UniversityAuburnAlabamaUSA
| | - Jere K. Stern
- Department of Pathobiology, College of Veterinary MedicineAuburn UniversityAuburnAlabamaUSA
| | - Thomas Passler
- Department of Clinical Sciences, JT Vaughan Large Animal Teaching Hospital, College of Veterinary MedicineAuburn UniversityAuburnAlabamaUSA
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Schöb LC, Gerspach C, Stirn M, Hofmann-Lehmann R, Riond B. Findings Related to Cerebrospinal Fluid and Central Nervous System Disorders in Small Ruminants-A Retrospective Study on Sheep and Goats. Animals (Basel) 2023; 14:46. [PMID: 38200777 PMCID: PMC10778181 DOI: 10.3390/ani14010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/30/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Small ruminants often suffer from central nervous system (CNS) disorders, and cerebrospinal fluid (CSF) analysis can be used as a diagnostic tool in this regard. In small animals and cattle, specific CSF patterns have been defined for specific disease categories. No data exist regarding CSF results obtained from small ruminants and their association with certain CNS diseases. OBJECTIVES The objective of this study was to retrospectively investigate CSF findings obtained from sheep and goats and to identify possible CSF patterns associated with disease categories. METHODS CSF samples and medical records from 44 sheep and 27 goats were included in this study. All animals were presented to the Veterinary Teaching Hospital Zurich of the Veterinary Teaching Hospital Zurich of the Vetsuisse Faculty of the University of Zurich between 2003 and 2016 and had either a confirmed CNS diagnosis or showed CSF changes without a specific CNS diagnosis. RESULTS Mixed mononuclear pleocytosis was the most common CSF pattern in sheep (25%), followed by monocytic pleocytosis (21%). Lymphocytic pleocytosis was most frequently found in goats (37%). In 75% of sheep and 56% of goats, infectious CNS diseases were diagnosed, with listeriosis being the most common infectious disease in both species, followed by parasitic disorders (nematodiasis and coenurosis). CONCLUSIONS The cytologic CSF patterns in small ruminants are mainly based on the increased presence of monocytic and lymphocytic cells with variable quantitative expression, whereas neutrophilic pleocytosis and cytoalbuminologic dissociation were rare findings. Infectious diseases of bacterial origin were the most common underlying causes for CSF alterations in sheep and goats, followed by parasitic disorders. The pleocytosis type is not helpful for differentiating disease types.
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Affiliation(s)
- Leandra C. Schöb
- Clinical Laboratory, Department for Clinical Services and Diagnostics, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (L.C.S.); (M.S.); (R.H.-L.)
- Clinic for Ruminants, Department of Farm Animals, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland;
| | - Christian Gerspach
- Clinic for Ruminants, Department of Farm Animals, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland;
| | - Martina Stirn
- Clinical Laboratory, Department for Clinical Services and Diagnostics, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (L.C.S.); (M.S.); (R.H.-L.)
| | - Regina Hofmann-Lehmann
- Clinical Laboratory, Department for Clinical Services and Diagnostics, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (L.C.S.); (M.S.); (R.H.-L.)
| | - Barbara Riond
- Clinical Laboratory, Department for Clinical Services and Diagnostics, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (L.C.S.); (M.S.); (R.H.-L.)
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Câmara ACL, de Sousa DER, de Mâcedo IL, Soares KL, Borges JRJ, Martins CF, de Mesquita AQ, Dutra V, de Castro MB. Suppurative Meningoencephalitis by Pseudomonas aeruginosa from Direct Extension of Chronic Otitis in a Gir Cow. Vet Sci 2023; 10:398. [PMID: 37368784 DOI: 10.3390/vetsci10060398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
This paper aims to report clinical, laboratory and pathological features in a case of suppurative meningoencephalitis by P. aeruginosa from the direct extension of chronic otitis in a Gir cow. The cow was recumbent during physical examination, and neurological examination revealed depression, absence of left eyelid and auricular motor reflex, and hypotonic tongue. Hematology revealed hemoconcentration, leukocytosis by neutrophilia, and hyperfibrinogenemia. Cerebrospinal fluid was slightly turbid, and presented polymorphonuclear pleocytosis, and hyperproteinorrachia. Grossly, the skull floor showed a purulent green-yellow exudate that drained from the left inner ear to the cisterna magna. There was diffuse congestion of the telencephalon, and meninges showed severe hyperemia, moderate thickening, and opacity with the deposition of fibrinosuppurative material ventrally, extending to the cerebellum and brainstem. The left cerebellar hemisphere showed an approximately 1.5 cm in diameter liquefaction area surrounded by a hemorrhagic halo. Histologically, cerebellar, mesencephalic, thalamic, and brain base meninges were intensely thickened and showed severe suppurative inflammation and fibrin deposition. Small multifocal suppurative areas were observed in the cerebellum and brainstem, characterized by a necrotic core, a number of neutrophils, and Gram-negative intralesional bacillary myriads. Pure cultures of P. aeruginosa were obtained and identified in the suppurative CNS lesions, meninges, and inner ear samples. This report highlights an uncommon clinical evolution of secondary P. aeruginosa suppurative meningoencephalitis, probably triggered by recurrent parasitic otitis in an adult Gir cow. Veterinarians, practitioners, and farmers must be aware of the risk of CNS infections after unresolved media and inner otitis, especially in cattle breeds more prone to developing parasitic otitis, such as the Gir and Indubrasil breeds.
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Affiliation(s)
- Antonio Carlos Lopes Câmara
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
| | - Davi Emanuel Ribeiro de Sousa
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
| | - Isabel Luana de Mâcedo
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
| | - Karoline Lacerda Soares
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
| | - José Renato Junqueira Borges
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
| | - Carlos Frederico Martins
- Centro de Tecnologia para Raças Zebuínas Leiteiras, Embrapa Cerrados, Brasilia 70770-901, DF, Brazil
| | | | - Valéria Dutra
- Laboratory of Veterinary Molecular Biology, Veterinary Hospital, Federal University of Mato Grosso, Cuiabá 78060-900, MT, Brazil
| | - Márcio Botelho de Castro
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia 70910-900, DF, Brazil
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Ferrini S, Rollo C, Bellino C, Borriello G, Cagnotti G, Corona C, Di Muro G, Giacobini M, Iulini B, D'Angelo A. A novel machine learning-based web application for field identification of infectious and inflammatory disorders of the central nervous system in cattle. J Vet Intern Med 2023; 37:766-773. [PMID: 36896810 PMCID: PMC10061175 DOI: 10.1111/jvim.16664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/03/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Central nervous system (CNS) infections in cattle are a major cause of economic loss and mortality. Machine learning (ML) techniques are gaining widespread application in solving predictive tasks in both human and veterinary medicine. OBJECTIVES Our primary aim was to develop and compare ML models that could predict the likelihood of a CNS disorder of infectious or inflammatory origin in neurologically-impaired cattle. Our secondary aim was to create a user-friendly web application based on the ML model for the diagnosis of infection and inflammation of the CNS. ANIMALS Ninety-eight cattle with CNS infection and 86 with CNS disorders of other origin. METHODS Retrospective observational study. Six different ML methods (logistic regression [LR]; support vector machine [SVM]; random forest [RF]; multilayer perceptron [MLP]; K-nearest neighbors [KNN]; gradient boosting [GB]) were compared for their ability to predict whether an infectious or inflammatory disease was present based on demographics, neurological examination findings, and cerebrospinal fluid (CSF) analysis. RESULTS All 6 methods had high prediction accuracy (≥80%). The accuracy of the LR model was significantly higher (0.843 ± 0.005; receiver operating characteristic [ROC] curve 0.907 ± 0.005 ) than the other models and was selected for implementation in a web application. CONCLUSION AND CLINICAL IMPORTANCE Our findings support the use of ML algorithms as promising tools for veterinarians to improve diagnosis. The open-access web application may aid clinicians in achieving correct diagnosis of infectious and inflammatory neurological disorders in livestock, with the added benefit of promoting appropriate use of antimicrobials.
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Affiliation(s)
- Sara Ferrini
- Department of Veterinary SciencesUniversity of TurinTurinItaly
| | - Cesare Rollo
- Department of Medical SciencesUniversity of TurinTurinItaly
| | - Claudio Bellino
- Department of Veterinary SciencesUniversity of TurinTurinItaly
| | | | - Giulia Cagnotti
- Department of Veterinary SciencesUniversity of TurinTurinItaly
| | - Cristiano Corona
- Istituto Zooprofilattico del Piemonte Liguria e Valle d'AostaTurinItaly
| | - Giorgia Di Muro
- Department of Veterinary SciencesUniversity of TurinTurinItaly
| | - Mario Giacobini
- Department of Veterinary SciencesUniversity of TurinTurinItaly
| | - Barbara Iulini
- Istituto Zooprofilattico del Piemonte Liguria e Valle d'AostaTurinItaly
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Cervical Vertebral Stenotic Myelopathy in a Nelore Calf. Vet Sci 2022; 9:vetsci9120699. [PMID: 36548860 PMCID: PMC9782499 DOI: 10.3390/vetsci9120699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/07/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
This paper aims to report clinical, laboratory, radiographic, and pathological features in a case of cervical vertebral stenotic myelopathy (CVSM) affecting a 4-month-old Nelore calf for the first time. During physical examination, the calf could stand if assisted when lifting by the tail but fallen to the ground when trying to walk. Attempts to flex and extend the neck to the right side failed. Radiographs findings consisted of reduced intervertebral spaces, and misalignments between the endplates, more evident between the C3 and C4 vertebrae, resulting in narrowing of the spinal canal and compression of the spinal cord. Grossly, C4 showed cranial articular surface malformation, abnormal metaphyseal growth plate development, reduced vertebral body size and deformity. Histologically, C4 showed an abnormal vertebral bone development characterized by moderate replacement of trabecular bone by fibrous tissues, multifocal areas of dystrophic hyaline cartilage development, and cartilaginous growth failure along the metaphyseal growth plate. Cervical spinal cord within the stenotic vertebral canal showed swollen neurons with central chromatolysis, areas of Wallerian degeneration, and necrotic debris. In contrast with the well-known Wobbler syndrome in horses, the etiology of CVSM in cattle remains undetermined, and further genetic and pathological studies must be conducted to elucidate it.
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Bennett SJ, Adkins PRF, Schultz LG, Walker KE. Assessment of cerebrospinal fluid analysis and short-term survival outcomes in South American camelids: A retrospective study of 54 cases (2005-2021). J Vet Intern Med 2022; 36:2263-2269. [PMID: 36151907 DOI: 10.1111/jvim.16529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/18/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Cerebrospinal fluid (CSF) is commonly analyzed in South American camelids with suspected neurologic disease because of ease of collection and characteristic findings associated with certain diseases. OBJECTIVES To assess CSF findings associated with short-term survival or non-survival in South American camelids in which neurologic disease was a differential diagnosis based on history and physical examination. ANIMALS Twenty-one llamas and 33 alpacas that underwent CSF analysis at the University of Missouri Veterinary Health Center. METHODS Retrospective study. Medical records of camelids that underwent CSF analysis between January 2005 and September 2021 were studied. Short-term survival was defined as survival to discharge from the Veterinary Health Center. A Fisher's exact test was used to compare species, CSF results, and survival. RESULTS Odds of survival were 3.9 times higher in camelids with a total nucleated cell count (TNCC) <3 cells/μL (P = .04). No significant association was found between survival and total protein concentration (TPC; P = .15) or percentage of eosinophils (P = 1.0). No significant correlation was found between species and increased TNCC (P = .63), TPC (P = .55), or percentage of eosinophils (P = .30). Among camelids diagnosed with Paralephostrongylus tenuis infestation, odds of survival were 4.95 times higher in alpacas (P = .05). CONCLUSIONS Cerebrospinal fluid TNCC ≥3 cells/μL is associated with decreased odds of short-term survival in South American camelids.
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Affiliation(s)
- Samuel J Bennett
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Pamela R F Adkins
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Loren G Schultz
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Kelsey E Walker
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
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Ferrini S, Grego E, Ala U, Cagnotti G, Valentini F, Di Muro G, Iulini B, Stella MC, Bellino C, D'Angelo A. Feasibility of 16S rRNA sequencing for cerebrospinal fluid microbiome analysis in cattle with neurological disorders: a pilot study. Vet Res Commun 2022; 47:373-383. [PMID: 35759164 DOI: 10.1007/s11259-022-09949-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 05/31/2022] [Indexed: 10/17/2022]
Abstract
Bacterial infection of the central nervous system (CNS) in cattle requires prompt and adequate antimicrobial treatment. The current gold standard for antemortem etiological diagnosis is cerebrospinal fluid (CSF) culture, which often yields false negative results. CSF has long been considered a sterile district in healthy patients, but this notion has been recently challenged. For this pilot study, we used 16S rRNA gene sequencing to investigate the microbial composition of CSF of cattle presenting with CNS disorders and to compare it between subjects with CNS infections and with CNS disorders of other nature. The study sample was 10 animals: 4 presenting with CNS infectious-inflammatory diseases and 6 with other CNS disorders, based on definitive diagnosis. Since the initial round of a standard 16S rRNA PCR did not yield sufficient genetic material for sequencing in any of the samples, the protocol was modified to increase its sensitivity. Bacterial genetic material was identified in 6 animals and 2 groups were formed: an infectious inflammatory (n = 3) and a noninfectious inflammatory group (n = 3). The most frequently expressed bacterial families were Pseudomonadaceae (44.61%), Moraxellaceae (19.54%), Mycobacteriaceae (11.80%); the genera were Pseudomonas (45.42%), Acinetobacter (19.91%), Mycobacterium (12.01%). There were no detectable differences in the CSF microbial composition of the samples from the two groups. Sequencing of bacterial DNA present in the CSF was possible only after increasing PCR sensitivity. The results of 16S rRNA sequencing showed the presence of a microbial community in the CSF in cattle with neurological disorders. Further studies, in which CSF samples from healthy animals and samples from the environment are included as controls, are needed.
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Affiliation(s)
- Sara Ferrini
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Elena Grego
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Ugo Ala
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Giulia Cagnotti
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy.
| | - Flaminia Valentini
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Giorgia Di Muro
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Barbara Iulini
- Istituto Zooprofilattico del Piemonte Liguria e Valle d'Aosta, Turin, Italy
| | - Maria Cristina Stella
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Claudio Bellino
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
| | - Antonio D'Angelo
- Department of Veterinary Sciences, Clinical section, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy
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Veenema NJ, Santifort KM, Kuijpers NW, Seijger A, Hut PR. Case Report: Complex Congenital Brain Anomaly in a BBxHF Calf-Clinical Signs, Magnetic Resonance Imaging, and Pathological Findings. Front Vet Sci 2021; 8:700527. [PMID: 34631846 PMCID: PMC8492953 DOI: 10.3389/fvets.2021.700527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/27/2021] [Indexed: 12/04/2022] Open
Abstract
This case report describes the clinical signs, magnetic resonance imaging (MRI) findings and associated (histo)pathological findings in a crossbred Belgian Blue calf with congenital complex brain anomaly. The calf was presented with non-progressive signs (including cerebellar ataxia) since it was born, suggestive of a multifocal intracranial lesion. A congenital anomaly was suspected and after hematology, biochemistry, serology, and cerebrospinal fluid analysis, a magnetic resonance imaging study was performed. The following suspected abnormalities were the principal changes identified: severe hydrocephalus, porencephaly, suspected partial corpus callosum agenesis (CCA), and increased fluid signal between the folia of the cerebellum. Post-mortem examination predominately reflected the MRI findings. The origin for these malformations could not be identified and there was no evidence of a causative infectious agent. Corpus callosum abnormalities have been reported in bovids before and have been linked to bovine viral diarrhea virus (BVDV) infections, as have several other central nervous system anomalies in this species. In this case, BVDV was deemed an unlikely causative agent based on serology test results and lack of typical histopathological signs. The etiology of the congenital anomaly present in this bovine calf remains unknown.
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Affiliation(s)
- Neeltje J Veenema
- Department of Population Health Sciences, Faculty of Veterinary Medicine, University of Utrecht, Utrecht, Netherlands
| | | | - Nienke W Kuijpers
- Department of Diagnostic Imaging, Faculty of Veterinary Medicine, University of Utrecht, Utrecht, Netherlands
| | - Anne Seijger
- Department of Population Health Sciences, Faculty of Veterinary Medicine, University of Utrecht, Utrecht, Netherlands
| | - Peter R Hut
- Department of Population Health Sciences, Faculty of Veterinary Medicine, University of Utrecht, Utrecht, Netherlands
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Câmara ACL, Gonzaga MC, Ziober TM, Queiroz CRR, Fino TC, Castro MB, Borges JRJ, Soto-Blanco B. Cerebrospinal fluid analysis in 58 ruminants showing neurological disorders. PESQUISA VETERINÁRIA BRASILEIRA 2020. [DOI: 10.1590/1678-5150-pvb-6540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: 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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Clarke LL, Hawkins IK, Rissi DR. Central nervous system diseases of cattle in Georgia, 2001-2017. J Vet Diagn Invest 2019; 31:588-593. [PMID: 31179896 DOI: 10.1177/1040638719854788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In a review of 159 archived bovine autopsy cases submitted to the Georgia Veterinary Diagnostic Laboratory System from 2001 to 2017, we evaluated histologic lesions and other laboratory test results in cases diagnosed with central nervous system (CNS) disease to determine the most common disorders and the rate of definitive morphologic and etiologic diagnosis within the population. The most common breed was Aberdeen Angus or Angus (31%), and female animals comprised 60% of the overall submissions. Gross anatomic changes were described in 33% of cases that had histologic lesions. Suppurative meningoencephalitis was the most common diagnosis (28% of cases overall) and was frequently associated with bacterial sepsis. Lymphocytic meningoencephalitis without an identified etiology was diagnosed in 17% of cases. Polioencephalomalacia was the most commonly identified noninfectious diagnosis (17%). Hydrocephalus was the most common CNS comorbidity and potential congenital defect. Identification of specific agents was sporadic, and infectious disease testing was largely dependent on fluorescent antibody testing, almost all of which were negative. Our findings indicate the common differential diagnoses for cattle with neurologic signs in the southeastern United States, as well the need for a well-defined, methodical diagnostic approach, including autopsy, histology, and appropriate additional laboratory testing.
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Affiliation(s)
- Lorelei L Clarke
- Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, Madison, WI (Clarke).,Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia, College of Veterinary Medicine (UGA-CVM), Athens, GA (Rissi).,Tifton Veterinary Diagnostic and Investigational Laboratory, UGA-CVM, Tifton, GA (Hawkins)
| | - Ian K Hawkins
- Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, Madison, WI (Clarke).,Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia, College of Veterinary Medicine (UGA-CVM), Athens, GA (Rissi).,Tifton Veterinary Diagnostic and Investigational Laboratory, UGA-CVM, Tifton, GA (Hawkins)
| | - Daniel R Rissi
- Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, Madison, WI (Clarke).,Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia, College of Veterinary Medicine (UGA-CVM), Athens, GA (Rissi).,Tifton Veterinary Diagnostic and Investigational Laboratory, UGA-CVM, Tifton, GA (Hawkins)
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12
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Chung ELT, Jesse FFA, Marza AD, Ibrahim HH, Abba Y, Zamri-Saad M, Haron AW, Lila MAM, Saharee AA, Omar AR, Bakar MZA, Norsidin MJ. Responses of pro-inflammatory cytokines, acute phase proteins and cytological analysis in serum and cerebrospinal fluid during haemorrhagic septicaemia infection in buffaloes. Trop Anim Health Prod 2019; 51:1773-1782. [PMID: 30919320 DOI: 10.1007/s11250-019-01870-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/15/2019] [Indexed: 12/26/2022]
Abstract
Sudden death is usually the main finding in field animals during haemorrhagic septicaemia outbreaks caused by Pasteurella multocida type B:2 that causes acute, fatal and septicaemic disease in cattle and buffaloes. This situation may be due to failure in early detection of the disease where early treatment of antibiotics may improve the prognosis of the animal and other surviving animals. Thus, there is a grey area on the knowledge on the potential usage of pro-inflammatory cytokines and acute phase proteins as early biomarkers in the diagnosis of haemorrhagic septicaemia. In addition, exploration of the cerebrospinal fluid during infection has never been studied before. Therefore, this study was designed to fill up the grey areas in haemorrhagic septicaemia research. Twenty-one buffalo calves were divided into seven treatment groups where group 1 was inoculated orally with 10 mL of sterile phosphate-buffered saline pH 7 which act as a negative control group. Groups 2 and 3 were inoculated orally and subcutaneously with 10 mL of 1012 colony-forming unit of P. multocida type B:2. Group 4 and 5 buffaloes were inoculated orally and intravenously with 10 mL of lipopolysaccharide broth. Groups 6 and 7 were administered orally and subcutaneously with 10 mL of outer membrane protein broth. During the post-infection period of 21 days, blood and cerebrospinal fluid were sampled for the analyses of pro-inflammatory cytokines, acute phase proteins and cytological examination. Buffalo calves infected with P. multocida and its immunogens via different routes of inoculation showed significant changes (p < 0.05) of pro-inflammatory cytokines, acute phase proteins and cytological changes in both the serum and cerebrospinal fluid. Buffalo calves from groups 3 and 7 showed the highest pro-inflammatory cytokines, whereas group 6 had the highest acute phase protein concentration and group 5 revealed the highest value for cytology changes. In summary, results obtained in this study could be used as a profiling study to add novel knowledge to the haemorrhagic septicaemia research as well as the development of biomarkers.
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Affiliation(s)
- Eric Lim Teik Chung
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Faez Firdaus Abdullah Jesse
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. .,Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Ali Dhiaa Marza
- Department of Veterinary Internal Medicine, Faculty of Veterinary Medicine, Al-Qasim Green University, Al-Qasim, Iraq
| | | | - Yusuf Abba
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Maiduguri, P.M.B. 1069, Maiduguri, Borno, Nigeria
| | - Mohd Zamri-Saad
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abdul Wahid Haron
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Azmi Mohd Lila
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abdul Aziz Saharee
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abdul Rahman Omar
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Md Zuki Abu Bakar
- Department of Preclinical, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Jefri Norsidin
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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13
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Lanier CJ, Fish EJ, Stockler JW, Newcomer BW, Koehler JW. What is your diagnosis? Cerebrospinal fluid from a goat. Vet Clin Pathol 2019; 48:358-360. [DOI: 10.1111/vcp.12686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/15/2018] [Accepted: 06/27/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher J. Lanier
- Department of Pathobiology Auburn University College of Veterinary Medicine Auburn Alabama
| | - Eric J. Fish
- Department of Pathobiology Auburn University College of Veterinary Medicine Auburn Alabama
| | - Jenna W. Stockler
- Department of Clinical Sciences Auburn University College of Veterinary Medicine Auburn Alabama
| | - Benjamin W. Newcomer
- Department of Clinical Sciences Auburn University College of Veterinary Medicine Auburn Alabama
| | - Jennifer W. Koehler
- Department of Pathobiology Auburn University College of Veterinary Medicine Auburn Alabama
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Moreira IL, de Sousa DER, Ferreira-Junior JA, de Castro MB, Fino TCM, Borges JRJ, Soto-Blanco B, Câmara ACL. Paralytic rabies in a goat. BMC Vet Res 2018; 14:338. [PMID: 30419906 PMCID: PMC6233588 DOI: 10.1186/s12917-018-1681-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/31/2018] [Indexed: 12/02/2022] Open
Abstract
Background Paralytic form of rabies is frequent in cattle in Latin America, but it is uncommon in goats. There are few clinical reports on furious rabies affecting goats, and the sporadic cases of rabid goats from surveillance programs worldwide lack clinical data. Furthermore, few studies reported the cerebrospinal fluid findings in rabid livestock. Case presentation On a farm in Midwestern Brazil, six of 47 Saanen goats died within one week. No vaccination protocols were implemented on the farm and the owner stated bat bites history on the livestock. Although rabies is endemic in Brazil, livestock vaccination is not mandatory. One 1-year-old buck was evaluated and showed non-specific clinical signs evolving within 12-h to nervous signs. Cerebrospinal fluid analysis revealed mononuclear pleocytosis, hyperproteinemia and high glucose levels. At necropsy, no gross lesions were present. Microscopically, discrete to moderate perivascular lymphoplasmacytic cuffing in gray and white matter, neuronal necrosis, neuronophagia, and mononuclear ganglioneuritis was observed in the brainstem and cervical spinal cord. Immunohistochemistry revealed strong anti-rabies virus immunostaining. Fresh central nervous system samples were positive for rabies in direct fluorescent antibody test (dFAT) and mouse intracerebral inoculation test (MIT). Exposed livestock recommendations included immediate vaccination, a strict isolation period of 90 days, and booster vaccinations during the third and eighth weeks. Conclusion IHC revealed the widespread distribution of rabies virus antigen in the goat’s CNS, contrasting the discrete pathological changes. In this goat, definitive diagnosis of paralytic rabies was obtained through the association of epidemiological, clinical, laboratorial, pathological findings (histology and IHC) and gold standard confirmatory tests (dFAT and MIT).
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Affiliation(s)
- Igor Louzada Moreira
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF, 70636-200, Brazil
| | - Davi Emanuel Ribeiro de Sousa
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Via L4 Norte s/n, Asa Norte, Brasília, DF, 70910-970, Brazil
| | - Jair Alves Ferreira-Junior
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Via L4 Norte s/n, Asa Norte, Brasília, DF, 70910-970, Brazil
| | - Márcio Botelho de Castro
- Veterinary Pathology Laboratory, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Via L4 Norte s/n, Asa Norte, Brasília, DF, 70910-970, Brazil
| | - Tayná Cardim Morais Fino
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF, 70636-200, Brazil
| | - José Renato Junqueira Borges
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF, 70636-200, Brazil
| | - Benito Soto-Blanco
- Department of Veterinary Clinics and Surgery, Veterinary College, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, Belo Horizonte, MG, 31275-013, Brazil.
| | - Antonio Carlos Lopes Câmara
- Large Animal Veterinary Teaching Hospital, College of Agronomy and Veterinary Medicine, Universidade de Brasília, Galpão 4, Granja do Torto, Brasília, DF, 70636-200, Brazil
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15
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Bilodeau MÈ, Achard D, Francoz D, Grimes C, Desrochers A, Nichols S, Babkine M, Fecteau G. Survival associated with cerebrospinal fluid analysis in downer adult dairy cows: A retrospective study (2006-2014). J Vet Intern Med 2018; 32:1780-1786. [PMID: 30216558 PMCID: PMC6189354 DOI: 10.1111/jvim.15305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 06/23/2018] [Accepted: 07/24/2018] [Indexed: 12/25/2022] Open
Abstract
Background Threshold values for total nucleated cell count (TNCC) and protein concentration in cerebrospinal fluid (CSF) of downer dairy cows suggestive of a spinal cord lesion were recently published. Objectives Determine short‐ and long‐term survival of downer cows that underwent CSF analysis using the reported threshold values. Evaluate the prognostic value of these threshold values to predict short‐ and long‐term survival. Animals Two hundred and fourteen downer adult dairy cows that underwent CSF analysis during hospitalization at the Centre Hospitalier Universitaire Vétérinaire (CHUV) of the Université de Montréal. Methods Retrospective study. Medical records of downer adult dairy cows presented to the hospital between January 2006 and October 2014 for which CSF analysis results were available were studied. Short‐term (discharge from hospital) and long‐term (completion of lactation) survival were determined and compared in accordance with CSF TNCC and protein concentration, using a Chi‐square test. Results Cows with CSF TNCC and/or protein concentration above the threshold values had a significantly lower short‐term survival rate (P = .02). The odds of nonsurvival of cows with one or both CSF values above the threshold values was 2.16 times higher than the odds for cows with values under the threshold values. CSF TNCC >4.5 cells/μL had sensitivity and specificity of 17.3% (95% CI: 10.7%‐25.7%) and 92.3% (95% CI: 85.4%‐96.6%), respectively, for predicting short‐term nonsurvival. CSF protein concentration >0.39 g/L had sensitivity and specificity of 20.9% (95% CI: 13.7%‐29.7%) and 91.4% (95% CI: 84.2%‐96.0%), respectively. Conclusions CSF analysis above threshold values used in this study is associated with increased odds of short‐term nonsurvival.
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Affiliation(s)
- Marie-Ève Bilodeau
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | | | - David Francoz
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | | | - André Desrochers
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | - Sylvain Nichols
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | - Marie Babkine
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | - Gilles Fecteau
- Faculté de Médecine Vétérinaire, Département des Sciences Cliniques, Université de Montréal, St-Hyacinthe, Quebec, Canada
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16
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Oliveira MC, Pereira GO, Daoualibi Y, Dutra V, Brito MF, Caldas SA, Balthazar DA, Ubiali DG. An outbreak of malignant catarrhal fever in Sambar deer (Rusa unicolor). PESQUISA VETERINARIA BRASILEIRA 2018. [DOI: 10.1590/1678-5150-pvb-5794] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
ABSTRACT: Malignant catarrhal fever (MCF) is an infectious, pansystemic and highly fatal disease with wide geographic distribution. The species that are clinically prone to it include cattle, deer and bison. In Brazil, the disease in ruminants and deer is associated with the contact with sheep, especially during labor, when the fetal remains that are eliminated contain the ovine herpesvirus 2 (OvHV-2). The outbreak took place in a conservationist property in the city of Casimiro de Abreu/RJ, which hosted 23 Sambar deer, and, of these, 19 died, showing neurological signs. The deer lived in a location together with 15 male and female meat sheep. A female specimen of the Sambar deer (Rusa unicolor), aged approximately three years, which had presented with neurological clinical signs was referred to necropsy in the Setor de Anatomia Patológica at Universidade Federal Rural do Rio de Janeiro (SAP/UFRRJ). During necropsy, cerebrospinal fluid was sampled for analysis; fragments of several organs were fixated in 10% buffered formalin and processed for histopathological analysis. Fragments of occipital lobe, cerebellum and bulb were collected to perform the polymerase chain reaction (PCR). The diagnosis of this outbreak was based on epidemiological, clinical and pathological findings, and on the amplification of the OvHV-2 DNA through PCR. The histological changes were the base to confirm the MCF case and were characterized by degeneration of vascular endothelial cells, fibrinoid vasculitis, hyperplasia and necrosis of lymphoid organs. However, PCR was an important tool to confirm the diagnosis. MCF as an important disease with nervous symptomatology in deer.
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17
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Queiroz GR, Pereira PFV, Flaiban KKMDC, Di Santis GW, Alfieri AA, Lisbôa JAN. Cerebrospinal fluid changes in cattle with rabies or with BoHV-5 meningoencephalitis and its correlation with the severity of CNS inflammatory process. Res Vet Sci 2018; 118:389-394. [DOI: 10.1016/j.rvsc.2018.03.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/20/2018] [Accepted: 03/24/2018] [Indexed: 11/26/2022]
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18
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Cunha P, Andrade D, Oliveira-Filho J, Badial P, Passarelli D, Takahira R, Lisboa J, Borges A. Parâmetros citológicos e bioquímicos do líquido cefalorraquidiano coletado de bovinos sadios em dois momentos, com intervalo de 96 horas. ARQ BRAS MED VET ZOO 2017. [DOI: 10.1590/1678-4162-9393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO A análise do líquido cefalorraquidiano (LCR) é uma importante ferramenta no diagnóstico das doenças neurológicas dos bovinos. A coleta do LCR em diferentes momentos facilita o monitoramento do quadro clínico e/ou a avaliação da eficácia de tratamentos estabelecidos. Todavia, os efeitos de coletas consecutivas sobre os parâmetros citológicos e bioquímicos do LCR de bovinos saudáveis ainda não foram analisados. Dessa forma, o objetivo do presente estudo foi avaliar potenciais diferenças citológicas e bioquímicas no LCR de bovinos sadios, obtidos em dois momentos, com intervalo de 96 horas. O LCR foi submetido à análise citológica e à determinação do teor de proteína total. Na segunda coleta, verificou-se aumento significativo da celularidade, porém ainda dentro do intervalo de referência para a espécie, diminuição de linfócitos e elevação de células mononucleares em relação à primeira coleta. No entanto, os números de hemácias (/µL), células nucleadas (/µL), neutrófilos (%), eosinófilos (%) e a concentração da proteína total (mg/dL) continuaram dentro dos valores de referência 96 horas após a realização da primeira punção. Conclui-se que os procedimentos de coleta de LCR consecutivos não provocaram inflamação local detectável 96 horas após a primeira punção, o que sugere que, quando necessário, coletas de LCR seriadas, por si só, não interfeririam nos resultados do exame.
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Affiliation(s)
| | | | | | - P.R. Badial
- Universidade Estadual Paulista, Brazil; Mississippi State University, USA
| | - D. Passarelli
- Universidade Estadual Paulista, Brazil; Universidade de São Paulo, Brazil
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19
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Moore AR, Hsiao SH, Chu CT, Aldridge BM, Schnelle AN. Pathology in Practice. Thrombotic meningoencephalitis (TME) in a calf. J Am Vet Med Assoc 2017; 251:665-668. [PMID: 28857705 DOI: 10.2460/javma.251.6.665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Achard D, Francoz D, Grimes C, Desrochers A, Nichols S, Babkine M, Fecteau G. Cerebrospinal Fluid Analysis in Recumbent Adult Dairy Cows With or Without Spinal Cord Lesions. J Vet Intern Med 2017; 31:940-945. [PMID: 28382682 PMCID: PMC5435069 DOI: 10.1111/jvim.14705] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/14/2017] [Accepted: 02/28/2017] [Indexed: 11/28/2022] Open
Abstract
Background Diagnosis of central nervous system (CNS) lesions in recumbent dairy cattle (RDC) is challenging because neurologic examination is limited and medical imaging often is challenging or unrewarding. Cerebrospinal fluid (CSF) analysis is useful in the diagnosis of CNS disorders in cattle. However, its utility in identifying spinal cord lesions in RDC remains to be evaluated. Hypothesis/Objectives We hypothesized that CSF analysis would discriminate between RDC with and without spinal cord lesions. Animals Twenty‐one RDC with spinal cord lesions (RDC+) and 19 without (RDC−) were evaluated. Methods Spinal cord lesions were confirmed at necropsy. Signalment, clinical findings, and CSF results were compared retrospectively. Total nucleated cell count and differential, protein concentration, and red blood cell count in RDC+ and RDC− were compared. Results Neoplasia, trauma, and infectious processes were the most frequent spinal cord lesions identified. Cerebrospinal fluid protein concentrations and TNCC were significantly higher in RDC+ compared to RDC− (P = .0092 and P = .0103, respectively). Additionally, CSF protein concentrations and TNCC in RDC− were lower than previously published reference ranges. Using an interpretation rule based on CSF protein concentration and TNCC, it was possible to accurately identify 13 RDC with spinal cord lesions and 6 RDC without lesions. It was not possible to determine spinal cord status in the remaining 18 RDC. Conclusions and Clinical Importance Cerebrospinal fluid analysis is valuable in the evaluation of spinal cord status in RDC. The prognosis associated with these findings remains to be determined.
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Affiliation(s)
- D Achard
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - D Francoz
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - C Grimes
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - A Desrochers
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - S Nichols
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - M Babkine
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - G Fecteau
- Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
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22
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Abstract
In food animals, spinal cord damage is most commonly associated with infection or trauma. Antemortem diagnosis is based on clinical signs, history, cerebrospinal fluid analysis, and imaging. As clinical signs are often severe, and prognosis is grave, necropsy may provide a postmortem diagnosis. Peripheral nerve abnormalities are most often the result of trauma. Calving paralysis or paresis is the most common condition affecting the sciatic or obturator nerve and often concurrently involves the peroneal branch of the sciatic. Damage to peripheral nerves is often transient and resolves within a few days as long as the nerve is not severed.
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23
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Moreira ASD, Raabis SM, Graham ME, Dreyfus JM, Sibley SD, Godhardt-Cooper JA, Toohey-Kurth KL, Goldberg TL, Peek SF. Identification by next-generation sequencing of Aichivirus B in a calf with enterocolitis and neurologic signs. J Vet Diagn Invest 2017; 29:208-211. [PMID: 28176615 DOI: 10.1177/1040638716685597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An 11-d-old Holstein bull calf was presented to the Veterinary Medical Teaching Hospital at the University of Wisconsin-Madison because of a 4-d history of diarrhea and persistent low-grade fever. Initial diagnosis was enteritis caused by Cryptosporidium and rotavirus. During hospitalization, the calf became stuporous and was only responsive to noxious stimuli, with hypotonia of all 4 limbs, tail, head, and neck. A cerebrospinal fluid analysis revealed xanthochromia, with marked lymphocytic pleocytosis, which was suggestive of viral meningitis and/or encephalitis. Aichivirus B, which belongs to the Kobuvirus genus, was tentatively identified in spinal fluid by next-generation DNA sequencing. This virus can affect a multitude of species, including humans and cattle, and has been isolated from both healthy and diarrheic individuals. However, to date, a possible connection with neurologic disease has not been described, to our knowledge.
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Affiliation(s)
- Ana S D Moreira
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Sarah M Raabis
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Melissa E Graham
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Jennifer M Dreyfus
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Samuel D Sibley
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Jennifer A Godhardt-Cooper
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Kathy L Toohey-Kurth
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Tony L Goldberg
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
| | - Simon F Peek
- Departments of Medical Sciences (Moreira, Raabis, Peek), University of Wisconsin-Madison, Madison, WI.,Pathobiological Sciences (Graham, Dreyfus, Sibley, Toohey-Kurth, Goldberg), University of Wisconsin-Madison, Madison, WI.,Wisconsin Veterinary Diagnostic Laboratory (Toohey-Kurth), University of Wisconsin-Madison, Madison, WI
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Diseases of the Nervous System. Vet Med (Auckl) 2017. [PMCID: PMC7322266 DOI: 10.1016/b978-0-7020-5246-0.00014-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Asymmetrical signs of brainstem disease occur relatively infrequently in ruminants. The most common differential diagnoses include listeriosis, otitis media/interna, and pituitary abscess syndrome. Although these conditions produce signs of brainstem dysfunction, the diseases can usually be differentiated based on historical findings and subtle clinical differences. Basic laboratory diagnostic tests are often not specific in the definitive diagnosis but may be supportive. Advanced imaging techniques have proven to be useful in the diagnosis of otitis media/interna. Presumptive clinical diagnosis is confirmed at necropsy. Treatment involves a prolonged course of antibiotic therapy but is unrewarding in cases of pituitary abscess syndrome.
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Marza AD, Jesse FFA, Ahmed IM, Teik Chung EL, Ibrahim HH, Zamri-Saad M, Omar AR, Abu Bakar MZ, Saharee AA, Haron AW, Alwan MJ, Mohd Lila MA. Involvement of the nervous system following experimental infection with Pasteurella multocida B:2 in buffalo (Bubalus bubalis): A clinicopathological study. Microb Pathog 2016; 93:111-9. [DOI: 10.1016/j.micpath.2016.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/28/2016] [Indexed: 10/22/2022]
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Bellino C, Miniscalco B, Bertone I, Cagnasso A, Occhiena E, Gianella P, D'Angelo A. Analysis of cerebrospinal fluid from cattle with central nervous system disorders after storage for 24 hours with autologous serum. BMC Vet Res 2015; 11:201. [PMID: 26268228 PMCID: PMC4542111 DOI: 10.1186/s12917-015-0502-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 07/22/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND We compared the changes in cell morphology, total and differential cell counts between cerebrospinal fluid (CSF) samples analyzed within an hour of collection (fresh sample) and after the addition of autologous serum and storage for 24 h (stored sample) in 27 cattle with central nervous system disorders. RESULTS There was a positive linear correlation between total and differential cell counts in the fresh and the stored samples. Cell morphology was preserved in all stored samples, except for increased vacuolization of mononuclear cells and cleaved nuclei of some small mononuclear cells. In the stored CSF samples, the total nucleated cell count and monocyte percentage were decreased (P = 0.01; P = 0.03), while the lymphocyte percentage was increased (P = 0.04). Mononuclear pleocytosis diagnosed in 20 fresh samples was cytologically confirmed in 12 of the 20 stored samples. In the remaining eight stored samples, the number of total nucleated cells was within the normal range. Neutrophilic pleocytosis was confirmed in all seven stored samples. The overall agreement rate between cytologic interpretation of the fresh and the stored CSF samples was 70 % (100 % for neutrophilic pleocytosis and 60 % for mononuclear pleocytosis). CONCLUSIONS Adding 11 % of autologous serum to CSF samples might allow delayed analysis with a good agreement rate for CSF cytological interpretation. Caution is nonetheless warranted, as animal age, anamnesis, and neurological presentation need to be considered when interpreting stored CSF without pleocytosis.
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Affiliation(s)
- C Bellino
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
| | - B Miniscalco
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
| | - I Bertone
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
| | - A Cagnasso
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
| | | | - P Gianella
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
| | - A D'Angelo
- Department of Veterinary Science, University of Turin, Grugliasco (TO), Turin, Italy.
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Headley SA, Bracarense APF, Oliveira VH, Queiroz GR, Okano W, Alfieri AF, Flaiban KK, Lisbôa JA, Alfieri AA. Histophilus somni-induced thrombotic meningoencephalitis in cattle from northern Paraná, Brazil. PESQUISA VETERINARIA BRASILEIRA 2015. [DOI: 10.1590/s0100-736x2015000400003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thrombotic meningoencephalitis (TME) is a fatal neurological disease of cattle, predominantly from North America, that is caused by Histophilus somniwith sporadic descriptions from other countries. This manuscript describes the occurrence of spontaneous TME in cattle from northern Paraná, Brazil. Most cattle had acute neurological manifestations characteristic of brain dysfunction. Hematological and cerebrospinal fluid analyses were not suggestive of bacterial infections of the brain. Histopathology revealed meningoencephalitis with vasculitis and thrombosis of small vessels that contained discrete neutrophilic and/or lymphocytic infiltrates admixed with fibrin at the brainstem, cerebral cortex, and trigeminal nerve ganglion of all animals. All tissues from the central nervous system used during this study were previously characterized as negative for rabies virus by the direct immunofluorescence assay. PCR and RT-PCR assays investigated the participation of infectious agents associated with bovine neurological disease by targeting specific genes of H. somni, Listeria monocytogenes, bovine herpesvirus -1 and -5, bovine viral diarrhea virus, and ovine herpesvirus-2. PCR and subsequent sequencing resulted in partial fragments of the 16S rRNA gene of H. somni from brain sections of all animals with histopathological diagnosis of TME; all other PCR/RT-PCR assays were negative. These findings confirmed the participation of H. somni in the neuropathological disease observed in these animals, extend the geographical distribution of this disease, and support previous findings of H. somni from Brazil.
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Câmara ACL, Vale AMD, Batista JS, Feijó FMC, Soto-Blanco B. Suppurative intracranial processes in 15 domestic ruminants. PESQUISA VETERINÁRIA BRASILEIRA 2014. [DOI: 10.1590/s0100-736x2014000500006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In addition to listeriosis which is relatively common in ruminants, there are three other uncommon suppurative intracranial processes (SIP) identifiable in adult ungulates as brain abscess, basilar empyema and suppurative meningitis. The present paper reports the epidemiological, clinical, laboratorial, pathological and microbiological findings of 15 domestic ruminants with SIP. A total of 15 animals were selected (eight sheep, four cattle and three goats); with the definitive diagnoses of basilar empyema (n=3), brain abscess (n=1), listeriosis (n=5) and suppurative meningitis (n=6). Hematology revealed leukocytosis with inversion of the lymphocyte/ neutrophil ratio in 4 cases. In the majority of animals, cerebrospinal fluid (CSF) presented light yellow coloration and cloudy aspect due to neutrophilic pleocytosis (15 - 997 leukocytes/µL). Microbiological culture of CSF or central nervous system (CNS) fragments resulted on isolation of Trueperella (Arcanobacterium) pyogenes,Listeria monocytogenes,Escherichia coli and Stenotrophomonas sp. In a goat with thalamic abscess, microbiological assay was not performed, but Gram positive bacilli type bacteria were observed in histology. The diagnosis of these outbreaks was based on the association of epidemiological, clinical, pathological and bacteriological findings; reiterating that the infectious component remains an important cause of CNS disease in domestic ruminants and also shows the need for dissemination of information about the most effective preventive measures for the ranchers.
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Pinn TL, Bender HS, Stokol T, Erb HN, Schlafer DH, Perkins GA. Cerebrospinal fluid eosinophilia is a sensitive and specific test for the diagnosis of Parelaphostrongylus tenuis in camelids in the northeastern United States. J Vet Diagn Invest 2013; 25:54-60. [PMID: 23345270 DOI: 10.1177/1040638712471058] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Aberrant migration of Parelaphostrongylus tenuis in camelids results in neurologic deficits, recumbency, and sometimes death. An antemortem diagnosis of P. tenuis in camelids is typically based upon the presence of characteristic asymmetric neurologic deficits, known exposure to white-tailed deer, cerebrospinal fluid (CSF) eosinophilia, and response to treatment. The diagnostic accuracy of CSF eosinophil percentage for the diagnosis of P. tenuis in camelids has not been critically examined. The objective of the current study was to determine the sensitivity (Se) and specificity (Sp) of CSF eosinophil percentage, CSF eosinophil concentration, total nucleated cell concentration, and protein concentration for the antemortem diagnosis of P. tenuis. Medical records of camelids admitted to Cornell University with clinical signs of neurologic disease, CSF analysis, and necropsy were examined from January 2000 through December 2009. Se and Sp were determined by receiver operating characteristic curves in camelids diagnosed with P. tenuis (n = 13) or other conditions (n = 24) based on postmortem examination. More than 17% of eosinophils in CSF had a Se of 85% and Sp of 92% for P. tenuis diagnosis (area under the curve [AUC]: 0.87; SE AUC: 0.07; P < 0.0001; 95% confidence interval [CI] AUC: 0.72-0.96), and >1.4 eosinophils/µl of CSF had a Se of 85% and Sp of 96% (AUC: 0.9; SE AUC: 0.06; P < 0.0001; 95% CI AUC: 0.76-0.97). Cerebrospinal fluid eosinophil percentage and concentration are sensitive and specific methods for diagnosing P. tenuis antemortem in camelids residing in regions endemic to white-tailed deer.
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Affiliation(s)
- Toby L Pinn
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
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Headley SA, Fritzen JTT, Queiroz GR, Oliveira RAM, Alfieri AF, Di Santis GW, Lisbôa JAN, Alfieri AA. Molecular characterization of encephalitic bovine listeriosis from southern Brazil. Trop Anim Health Prod 2013; 46:19-25. [PMID: 23832703 DOI: 10.1007/s11250-013-0441-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2013] [Indexed: 11/29/2022]
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Abstract
Diseases of the central nervous system (CNS) are relatively common in food animals. Potential causes include infectious agents, nutritional deficiencies, metabolic disorders, genetic defects, toxins, and idiopathic causes. Determining the correct etiologic diagnosis often depends on a thorough postmortem examination and collection of samples. This article reviews some of the steps and procedures necessary to collect the necessary information on CNS diseases in food animals. Techniques for the examination of the CNS are briefly described, and some of the gross pathology likely to be encountered in a food animal practice is reviewed.
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Affiliation(s)
- Jerome C Nietfeld
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA.
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Mitchell KJ, Peters-Kennedy J, Stokol T, Gerhold RW, Beckstead RB, Divers TJ. Diagnosis of Parelaphostrongylus spp. infection as a cause of meningomyelitis in calves. J Vet Diagn Invest 2012; 23:1097-103. [PMID: 22362788 DOI: 10.1177/1040638711426322] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Migration of Parelaphostrongylus spp. has been documented to cause central nervous system damage in a number of aberrant host species but appears to be uncommon in cattle. The current report describes the clinical and laboratory findings, antemortem and definitive diagnosis, and response to treatment of Parelaphostrongylus spp. infection in five 3-7- month-old Limousin calves from 2 farms. All calves had signs of acute (n = 2) and chronic (n = 3) progressive spinal cord dysfunction. Cerebrospinal fluid analysis revealed a marked eosinophilic (acute cases) or lymphocytic (chronic cases) pleocytosis and elevated protein in all calves. A necropsy and histopathologic evaluation was performed on 2 euthanized calves, and histopathology revealed lymphoplasmacytic and eosinophilic meningomyelitis with multiple intradural and intramedullary expansile hyperplastic lymphoid nodules containing germinal centers and nematode fragments. DNA sequencing was performed on nested polymerase chain reaction products amplified with parasite-specific primers obtained from formalin-fixed and frozen spinal cord; PCR products from these 2 calves were 100% identical to Parelaphostrongylus species on DNA sequencing, confirming the diagnosis. Surviving calves rapidly improved following treatment with anthelmintics and corticosteroids. This case series identified Parelaphostrongylus spp. (likely P. tenuis) as a cause of spinal cord disease in calves and highlights the need for vigilance against aberrant parasite migration in calves grazing wet, snail-infested pastures. Cerebrospinal fluid eosinophilia is useful for supporting an antemortem diagnosis of Parelaphostrongylus in calves with acute neurologic disease; however, a lymphocytosis is observed in chronic or treated cases.
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Affiliation(s)
- Kathryn J Mitchell
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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El-Boshy M, El-Khodery S, Gadalla H, El-Ashker M. Prognostic significance of selected immunological and biochemical parameters in the cerebrospinal fluid of Ossimi sheep with encephalitic listeriosis. Small Rumin Res 2012. [DOI: 10.1016/j.smallrumres.2011.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Batista JS, Rodrigues CMF, García HA, Bezerra FSB, Olinda RG, Teixeira MMG, Soto-Blanco B. Association of Trypanosoma vivax in extracellular sites with central nervous system lesions and changes in cerebrospinal fluid in experimentally infected goats. Vet Res 2011; 42:63. [PMID: 21569364 PMCID: PMC3105954 DOI: 10.1186/1297-9716-42-63] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 05/11/2011] [Indexed: 11/10/2022] Open
Abstract
Changes in cerebrospinal fluid (CSF) and anatomical and histopathological central nervous system (CNS) lesions were evaluated, and the presence of Trypanosoma vivax in CNS tissues was investigated through PCR. Twelve adult male goats were divided into three groups (G): G1, infected with T. vivax and evaluated during the acute phase; G2, infected goats evaluated during the chronic phase; and G3, consisting of non-infected goats. Each goat from G1 and G2 was infected with 1.25 × 105 trypomastigotes. Cerebrospinal fluid (CSF) analysis and investigation of T. vivax was performed at the 15th day post-infection (dpi) in G1 goats and on the fifth day after the manifestation of nervous system infection signs in G2 goats. All goats were necropsied, and CNS fragments from G1 and G2 goats were evaluated by PCR for the determination of T. vivax. Hyperthermia, anemia and parasitemia were observed from the fifth dpi for G1 and G2, with the highest parasitemia peak between the seventh and 21st dpi. Nervous system infection signs were observed in three G2 goats between the 30th and 35th dpi. CSF analysis revealed the presence of T. vivax for G2. Meningitis and meningoencephalitis were diagnosed in G2. PCR were positive for T. vivax in all the samples tested. In conclusion, T. vivax may reach the nervous tissue resulting in immune response from the host, which is the cause of progressive clinical and pathological manifestations of the CNS in experimentally infected goats.
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Affiliation(s)
- Jael S Batista
- Department of Animal Sciences, Universidade Federal Rural do Semi-árido (UFERSA), BR 110 - Km 47, CEP: 59625-900, Mossoró-RN, Brazil.
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Câmara ACL, Borges JRJ, Godoy RFD, Moscardini AR, Mustafa VDS, Castro MBD, Ximenes FH, Paludo GR, Perecmanis S, Drummond VO. Síndrome do abscesso pituitário em bezerros na Região Centro-Oeste. PESQUISA VETERINÁRIA BRASILEIRA 2009. [DOI: 10.1590/s0100-736x2009001100011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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.
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