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Rissi DR, McKinney AS, Fishburn JD, Mendes RE, Velayudhan BT. Comparison of fluorescent antibody test, immunohistochemistry, and PCR testing for diagnostic confirmation of neurolisteriosis in 25 goats. J Vet Diagn Invest 2024:10406387241273426. [PMID: 39152697 DOI: 10.1177/10406387241273426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2024] Open
Abstract
Neurolisteriosis, a common disease of small ruminants, is most often caused by Listeria monocytogenes. Here we describe 25 cases of caprine neurolisteriosis diagnosed in our laboratory over a 5-y period and compare our fluorescent antibody test (FAT) results with immunohistochemistry (IHC) and polymerase chain reaction (PCR) testing for diagnostic confirmation. Neurohistologic changes consistent with neurolisteriosis affected the pons in all cases, extending rostrally to the mesencephalon in 6 cases, caudally to the medulla oblongata in 6 cases, and/or dorsally to the cerebellum in 4 cases. Acute inflammatory changes were observed in 17 cases, and included neuroparenchymal microabscesses, neuronal necrosis and neuronophagia, axonal swelling, microgliosis and astrogliosis, and perivascular neutrophils with macrophages, lymphocytes, and plasma cells that occasionally extended to the leptomeninges. Subacute-to-chronic changes (8 cases) consisted of neuroparenchymal and perivascular clusters of macrophages with rare neutrophils, lymphocytes, and plasma cells admixed with glial nodules. Bacterial bacilli were observed within neutrophils or macrophages in H&E-stained tissue sections in 4 cases. Gram stain highlighted gram-positive bacilli in 13 cases. Neurolisteriosis was confirmed by FAT in 2 cases, by IHC in 19 cases, and by PCR in 20 cases.
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Affiliation(s)
- Daniel R Rissi
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Amy S McKinney
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Jillian D Fishburn
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Ricardo E Mendes
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Binu T Velayudhan
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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Jeckel S, Wood A, Grant K, Amar C, King SA, Whatmore AM, Koylass M, Anjum M, James J, Welchman DDB. Outbreak of encephalitic listeriosis in red-legged partridges (Alectoris rufa). Avian Pathol 2016; 44:269-77. [PMID: 25921827 DOI: 10.1080/03079457.2015.1042427] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
An outbreak of neurological disease was investigated in red-legged partridges between 8 and 28 days of age. Clinical signs included torticollis, head tilt and incoordination and over an initial eight day period approximately 30-40 fatalities occurred per day. No significant gross post mortem findings were detected. Histopathological examination of the brain and bacterial cultures followed by partial sequencing confirmed a diagnosis of encephalitis due to Listeria monocytogenes. Further isolates were obtained from follow-up carcasses, environmental samples and pooled tissue samples of newly imported day-old chicks prior to placement on farm. These isolates had the same antibiotic resistance pattern as the isolate of the initial post mortem submission and belonged to the same fluorescent amplified fragment length polymorphism (fAFLP) subtype. This suggested that the isolates were very closely related or identical and that the pathogen had entered the farm with the imported day-old chicks, resulting in disease manifestation in partridges between 8 and 28 days of age. Reports of outbreaks of encephalitic listeriosis in avian species are rare and this is to the best of our knowledge the first reported outbreak in red-legged partridges.
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Affiliation(s)
- S Jeckel
- a Animal Health and Veterinary Laboratory Agency , Royal Veterinary College , Hawkshead Lane, North Mymms , UK
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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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Rissi DR, Rech RR, Barros RR, Kommers GD, Langohr IM, Pierezan F, Barros CS. Forma nervosa de listeriose em caprinos. PESQUISA VETERINARIA BRASILEIRA 2006. [DOI: 10.1590/s0100-736x2006000100004] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Em um rebanho de 100 caprinos, foram observados casos de uma doença neurológica em três animais adultos jovens (identificados como A-C) entre outubro e dezembro de 2004. Os sinais clínicos incluíam desvio da cabeça, torcicolo, nistagmo, andar desequilibrado e quedas que acabavam em decúbito, durante o qual o caprino executava movimentos de pedalagem com os membros rígidos. Tratamento com antibióticos no Caprino C resultou em remissão temporária dos sinais. A evolução clínica foi de 5, 10 e 30 dias, respectivamente, para os Caprinos A, B e C. O Caprino A morreu espontaneamente e os outros dois foram eutanasiados na fase terminal da doença. Não foram observadas alterações macroscópicas. Lesões histológicas eram predominantemente unilaterais e consistiam de alterações inflamatórias e degenerativas que se estendiam do bulbo ao tálamo. Em todos os casos havia manguitos perivasculares de um ou mais tipos de células mononucleares (linfócitos, plasmócitos, macrófagos ativados) e ocasionalmente neutrófilos associados a áreas de malacia onde células Gitter preenchiam os espaços de perda do parênquima. Adicionalmente, o Caprino B tinha microabscessos no bulbo, ponte, e mesencéfalo e infiltrado neutrofílico e linfocítico multifocal nos fascículos do nervo trigêmeo, próximo ao gânglio de Gasser, e nas leptomeninges do cerebelo. No tronco encefálico do Caprino C, a reação era multifocal e com característica granulomatosa e incluía células epitelióides e, ocasionalmente, células gigantes multinucleadas. Listeria sp foi detectada por imunoisto-química em cortes de mesencéfalo rotineiramente processado dos Caprinos A e C e de ponte do Caprino B.
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Park JH, Park YH, Seok SH, Cho SA, Kim DJ, Lee HY, Kim SH, Park JH. Suppurative gastritis in BALB/c mice infected with Listeria monocytogenes via the intragastric route. J Comp Pathol 2004; 130:130-6. [PMID: 15003470 DOI: 10.1016/j.jcpa.2003.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2003] [Accepted: 10/03/2003] [Indexed: 10/26/2022]
Abstract
Suppurative gastritis was demonstrated in BALB/c mice 3 days after intragastric inoculation with 10(9) organisms of Listeria monocytogenes strain ATCC19113 (serotype 3). Also tested were four other strains of mice (C3H, C57BL/6, FVB and ICR) and three other strains of L. monocytogenes (HPB 3 [serotype 4b], HPB 410 [serotype 1/2a] and HPB 503 [serotype 1/2b]). After inoculation with ATCC19113 the numbers of bacteria found in the stomach wall were greater in C57BL/6 and ICR mice than in C3H and FVB mice; moreover, the gastritis produced in BALB/c and C57BL/6 mice was more severe than that produced in the other mouse strains. The gastritis produced in BALB/c mice with L. monocytogenes HPB 3, HPB 410 and HPB 503 was much more severe than that produced by ATCC19113. The inflammatory response occurred in the lamina muscularis and mucosa of the fundus. Massive necrosis of the gastric epithelium was observed, and there was oedema in a large part of the mucosal layer of the fundus. In addition, the submucosal layer was apparently expanded due to oedema, and in the cardia, the mucosal layer had become thin and flattened. Immunohistochemically, a polyclonal antibody against Listeria spp. produced labelling in areas of the gastric mucosa in which there was an inflammatory response and gastric epithelial necrosis.
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Affiliation(s)
- J-H Park
- Departments of Laboratory Animal Medicine, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, San 56-1, Shinlim-dong, Kwanak-ku, Seoul 151-742, South Korea
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Morin DE. Brainstem and cranial nerve abnormalities: listeriosis, otitis media/interna, and pituitary abscess syndrome. Vet Clin North Am Food Anim Pract 2004; 20:243-73, vi. [PMID: 15203225 DOI: 10.1016/j.cvfa.2004.02.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This article reviews three disorders associated with multiple asymmetric cranial nerve deficits in ruminants: encephalitic listeriosis,otitis media/interna, and pituitary abscess syndrome. Emphasis is placed on encephalitic listeriosis, an infectious disease of the brainstem and cranial nerves caused by Listeria monocytogenes. The epidemiology, pathophysiology, clinical manifestations, diagnosis,and treatment of encephalitic listeriosis are reviewed, and differences between cattle and small ruminants are noted. Physical and neurologic examination findings that distinguish otitis media/interna and pituitary abscess syndrome from encephalitic listeriosis are highlighted.
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Affiliation(s)
- Dawn E Morin
- Farm Animal Reproduction, Medicine, and Surgery Section, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, 218 Large Animal Clinic, 1008 West Hazelwood Drive, Urbana, IL 61802, USA.
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Campero CM, Odeón AC, Cipolla AL, Moore DP, Poso MA, Odriozola E. Demonstration of Listeria monocytogenes by immunohistochemistry in formalin-fixed brain tissues from natural cases of ovine and bovine encephalitis. JOURNAL OF VETERINARY MEDICINE. B, INFECTIOUS DISEASES AND VETERINARY PUBLIC HEALTH 2002; 49:379-83. [PMID: 12449246 DOI: 10.1046/j.1439-0450.2002.00586.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In the present work, evidence of Listeria monocytogenes antigens based on the avidin-biotin complex (ABC) immunoperoxidase technique was performed on formalin-fixed central nervous system tissues (CNS) from a total of 23 natural cases of encephalitis (four ovine and 19 bovine). Listeria monocytogenes serotype 4 was isolated from 10 of 17 cultured specimens. Meningoencephalitis characterized by focal necrosis, microabscesses, perivascular cuffing, and gliosis with presence of macrophages and/or neutrophils was observed at histological examination. Positive L. monocytogenes antigens were successfully identified by immunohistochemistry (IHC) in the CNS of all 23 cases. Paraffin-embedded tissues assayed were stored up for 17 years. Morbidity of the outbreaks was between 0.3-3% and 0.1-1% for ovine and bovine cases, respectively. In all the ovine cases, flocks involved were under extensive grazing conditions. In nine of the 19 bovine cases (47.3%), supplementation with corn silage was used. The ABC test can help as a practical tool for the diagnosis of natural cases of L. monocytogenes encephalitis on formalin-fixed specimens from ovine and bovine.
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Affiliation(s)
- C M Campero
- The Animal Health Group, Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina.
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Vázquez-Boland JA, Kuhn M, Berche P, Chakraborty T, Domínguez-Bernal G, Goebel W, González-Zorn B, Wehland J, Kreft J. Listeria pathogenesis and molecular virulence determinants. Clin Microbiol Rev 2001; 14:584-640. [PMID: 11432815 PMCID: PMC88991 DOI: 10.1128/cmr.14.3.584-640.2001] [Citation(s) in RCA: 1494] [Impact Index Per Article: 65.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The gram-positive bacterium Listeria monocytogenes is the causative agent of listeriosis, a highly fatal opportunistic foodborne infection. Pregnant women, neonates, the elderly, and debilitated or immunocompromised patients in general are predominantly affected, although the disease can also develop in normal individuals. Clinical manifestations of invasive listeriosis are usually severe and include abortion, sepsis, and meningoencephalitis. Listeriosis can also manifest as a febrile gastroenteritis syndrome. In addition to humans, L. monocytogenes affects many vertebrate species, including birds. Listeria ivanovii, a second pathogenic species of the genus, is specific for ruminants. Our current view of the pathophysiology of listeriosis derives largely from studies with the mouse infection model. Pathogenic listeriae enter the host primarily through the intestine. The liver is thought to be their first target organ after intestinal translocation. In the liver, listeriae actively multiply until the infection is controlled by a cell-mediated immune response. This initial, subclinical step of listeriosis is thought to be common due to the frequent presence of pathogenic L. monocytogenes in food. In normal individuals, the continual exposure to listerial antigens probably contributes to the maintenance of anti-Listeria memory T cells. However, in debilitated and immunocompromised patients, the unrestricted proliferation of listeriae in the liver may result in prolonged low-level bacteremia, leading to invasion of the preferred secondary target organs (the brain and the gravid uterus) and to overt clinical disease. L. monocytogenes and L. ivanovii are facultative intracellular parasites able to survive in macrophages and to invade a variety of normally nonphagocytic cells, such as epithelial cells, hepatocytes, and endothelial cells. In all these cell types, pathogenic listeriae go through an intracellular life cycle involving early escape from the phagocytic vacuole, rapid intracytoplasmic multiplication, bacterially induced actin-based motility, and direct spread to neighboring cells, in which they reinitiate the cycle. In this way, listeriae disseminate in host tissues sheltered from the humoral arm of the immune system. Over the last 15 years, a number of virulence factors involved in key steps of this intracellular life cycle have been identified. This review describes in detail the molecular determinants of Listeria virulence and their mechanism of action and summarizes the current knowledge on the pathophysiology of listeriosis and the cell biology and host cell responses to Listeria infection. This article provides an updated perspective of the development of our understanding of Listeria pathogenesis from the first molecular genetic analyses of virulence mechanisms reported in 1985 until the start of the genomic era of Listeria research.
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Affiliation(s)
- J A Vázquez-Boland
- Grupo de Patogénesis Molecular Bacteriana, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain.
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Giraudo Conesa LC, Vannelli SA, Uzal FA. Detection of Clostridium chauvoei in formalin-fixed, paraffin-embedded tissues of sheep by the peroxidase-antiperoxidase (PAP) technique. Vet Res Commun 1995; 19:451-6. [PMID: 8619282 DOI: 10.1007/bf01839332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A peroxidase-antiperoxidase (PAP) technique was used to detect Clostridium chauvoei in tissue sections from sheep inoculated intramuscularly with a pure culture of this microorganism. Samples of various tissues were taken for bacteriology, histopathology and immunohistochemistry. A primary antiserum against C. chauvoei for use in the PAP technique was produced in rabbits. Formalin-fixed, paraffin-embedded sections of muscle samples were positively and specifically stained by the PAP technique. The results were consistent with those obtained by bacteriology, but the PAP test was simpler, quicker and less expensive than the bacteriological procedures. The use of the PAP technique would be appropriate for detecting clostridial infections without the constraints of conventional identification methods, especially where laboratory conditions for anaerobic procedures are not readily available.
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Affiliation(s)
- L C Giraudo Conesa
- Animal Health Unit, National Institute of Agricultural Technology (INTA), Bariloche, Argentina
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Krueger N, Low C, Donachie W. Phenotypic characterization of the cells of the inflammatory response in ovine encephalitic listeriosis. J Comp Pathol 1995; 113:263-75. [PMID: 8592052 DOI: 10.1016/s0021-9975(05)80041-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The brainstem (pons cerebri and medulla oblongata) of 22 sheep aged between 6 months and 3 years which had developed clinical signs of central nervous system dysfunction were examined. Histopathological changes characterized by microabscesses, focal gliosis and perivascular cuffing compatible with natural infection with Listeria monocytogenes were present. The brains were examined by lectin histochemistry and immunohistochemistry with markers for T lymphocytes (CD4+ and CD8+ subsets), B lymphocytes, mononuclear phagocytes (including macrophages, ramified microglia, activated microglia and amoeboid microglia), astroglia and L. monocytogenes. These methods allowed semiquantitative analyses of the frequency of the different cell types in the brain lesions. The distribution of listerial antigen in the lesions was variable but always sparse. Mononuclear phagocytes and neutrophils appeared to be the most numerous inflammatory cells in the affected areas of the brainstem. T lymphocytes (CD8+ and CD4+ subsets) and B lymphocytes also played a part in the inflammatory process, in addition to activated astrocytes.
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Affiliation(s)
- N Krueger
- Moredun Research Institute, Edinburgh, UK
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Johnson GC, Fales WH, Maddox CW, Ramos-Vara JA. Evaluation of laboratory tests for confirming the diagnosis of encephalitic listeriosis in ruminants. J Vet Diagn Invest 1995; 7:223-8. [PMID: 7542480 DOI: 10.1177/104063879500700210] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Retrospective analysis of 93 bovine, ovine, and caprine cases diagnosed as listerial encephalitis revealed positive bacterial isolations in only 63% of 59 cases in which bacterial culture was attempted. Only 42% of 41 attempted bovine brain cultures were successful, compared with 67% from 6 sheep brains and 92% from 12 goat brains. Gram stains and Listeria-specific immunohistochemistry were evaluated as tools for verifying the presence of bacteria or listerial antigens in 38 animals. Sixteen of 17 animals in this group with positive bacterial isolations were immunochemically positive for listerial antigens (including 5/6 cattle), but Gram stains detected only 9/17 positive animals (including 1/6 cattle). Antigen was also detected in 15 of 21 animals (including 5/9 cattle) with unsuccessful or unattempted bacterial isolations. Of all 38 animals, the histologic diagnosis could be verified in 82% by immunohistochemistry, compared to 47% verified by Gram stains. Immunohistochemical testing was especially beneficial in locating antigen in lesions with few bacteria or bacterial antigens and is a rapid method of confirming the diagnosis of encephalitic listeriosis where inappropriate material is submitted for bacterial isolation or in culture-negative cases.
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Affiliation(s)
- G C Johnson
- Veterinary Medical Diagnostic Laboratory, University of Missouri, Columbia 65205, USA
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Peters M, Pohlenz J, Jaton K, Ninet B, Bille J. Studies of the detection of Listeria monocytogenes by culture and PCR in cerebrospinal fluid samples from ruminants with listeric encephalitis. ZENTRALBLATT FUR VETERINARMEDIZIN. REIHE B. JOURNAL OF VETERINARY MEDICINE. SERIES B 1995; 42:84-8. [PMID: 7483908 DOI: 10.1111/j.1439-0450.1995.tb00686.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A total of 14 cerebrospinal fluid (CSF) samples from ruminants clinically suspected of suffering from listeric encephalitis were examined by polymerase chain reaction (PCR) for the detection of Listeria monocytogenes (L. m.). Of these samples, 11 were examined bacteriologically. Although the clinical diagnosis was confirmed in eight of 11 ruminants by histological and/or bacteriological examination of the brains, L. m. was only detected in one of the CSF samples using PCR, and in none by culture. The PCR-positive CSF sample was obtained from a sheep which had been treated with antibiotics prior to CSF sampling. From these findings, it was concluded that L. m. only occasionally gains access to the meningoventricular system in the course of listeric encephalitis of ruminants and that a reliable aetiological in vivo diagnosis of listeric encephalitis generally cannot be based on the detection of L. m. in the CSF of affected ruminants.
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Affiliation(s)
- M Peters
- Institute of Microbiology and Infectious Diseases of Animals, School of Veterinary Medicine, Hannover, Germany
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Weinstock D, Horton SB, Rowland PH. Rapid diagnosis of Listeria monocytogenes by immunohistochemistry in formalin-fixed brain tissue. Vet Pathol 1995; 32:193-5. [PMID: 7771062 DOI: 10.1177/030098589503200215] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- D Weinstock
- College of Veterinary Medicine, North Carolina State University, Raleigh 27606, USA
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14
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Haines DM, Ellis JA. Special tests for the diagnosis of infectious causes of reproductive failure in ruminants. Vet Clin North Am Food Anim Pract 1994; 10:561-85. [PMID: 7728637 DOI: 10.1016/s0749-0720(15)30539-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The detection of many infectious disease agents, including those of importance in ruminant reproductive failure, increasingly will be achieved through means other than the laborious and time-consuming traditional isolation and culture procedures. New diagnostic methodologies are designed both to enhance the rapidity with which results are obtained and to increase specificity and sensitivity of identification of the causative agent. Immunoenzyme histochemical staining of formalin-fixed paraffin-embedded tissues offers, especially in cases of abortions in which necropsy material routinely is examined histologically, an efficient and timely means of identifying many important pathogens. Antemortem serologic diagnostics will continue to be dominated by ELISA technologies. In the past decade, the specificity of serodiagnosis has been enhanced greatly by the use of monoclonal antibody-based competitive ELISA systems and further improvements in such methods will result from the use of defined antigens derived by recombinant DNA techniques. Although DNA hybridization technology has been applied successfully to detect many important veterinary pathogens and has been shown to have merit for improved diagnosis of some fastidious agents, those methods, because of their technical complexity, in general, have not been shown to be applicable for routine diagnostic uses. In contrast, methods using the PCR for specific gene amplification offer exceptional promise. Although the PCR presently is too technically exacting for routine use, its broad applicability and exquisite sensitivity and specificity suggest that it will play an ever-increasing role in future veterinary diagnostic techniques.
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Affiliation(s)
- D M Haines
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon
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Marco AJ, Prats N, Ramos JA, Briones V, Blanco M, Dominguez L, Domingo M. A microbiological, histopathological and immunohistological study of the intragastric inoculation of Listeria monocytogenes in mice. J Comp Pathol 1992; 107:1-9. [PMID: 1430342 DOI: 10.1016/0021-9975(92)90090-h] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The course of murine infection after intragastric inoculation of L. monocytogenes was investigated by immunocytochemical, histopathological and microbiological techniques. L. monocytogenes antigen was observed in epithelial cells of intestinal mucosa overlying Peyer's patches, but not in mucosa devoid of them. This suggests that penetration of L. monocytogenes into the host organism may take place through epithelium overlying Peyer's patches. The efficiency of bacterial penetration appeared to be low, as shown by the small amounts of L. monocytogenes antigen detected and the low counts of bacteria in organs. Gross or histopathological lesions in the intestinal tract were not observed. The presence of L. monocytogenes in spleen, liver and in maxillary and mesenteric lymph nodes, confirmed that the systemic course of infection by this route of inoculation is similar to that of the parenteral routes. The results emphasize the subclinical character of murine listeriosis by the oral route.
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Affiliation(s)
- A J Marco
- Departamento de Patología y Producciones Animales, Facultad de Veterinaria, Universidad Autónoma de Barcelona, Bellaterra
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Peters M, Hewicker-Trautwein M, Amtsberg G. Untersuchungen zur Diagnostik der Listerienenzephalitis bei Wiederkäuern unter Anwendung kultureller und immunhistologischer Verfahren. ACTA ACUST UNITED AC 1992. [DOI: 10.1111/j.1439-0450.1992.tb01196.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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