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Salant H, Rojas A, Yardeny D, Brenner O, Schvartz G, Baneth G, Dvir E. Cutaneous habronemosis in horses: First molecular characterization of Habronema muscae in Israel. Comp Immunol Microbiol Infect Dis 2020; 75:101608. [PMID: 33383475 DOI: 10.1016/j.cimid.2020.101608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 11/26/2022]
Abstract
Draschia megastoma, Habronema microstoma, and Habronema muscae are the etiological agents of cutaneous habronemosis, commonly known as summer sores, an inflammatory cutaneous and ocular parasitic disease of horses and other equids transmitted by flies. Here, we describe a cluster of cutaneous habronemosis in five horses that showed single or multiple typical cutaneous ulcerative wounds located on the face, lower forelegs or hindquarters in Israel with the presence of typical "sulphur granules." All affected animals were confirmed by histopathological and/or molecular methods to be infected by H. muscae. This constitutes the first report of cutaneous habronemosis in Israel in which the causative nematode, H. muscae, was identified by molecular means. Cutaneous habronemosis should be considered as a differential diagnosis in equids with cutaneous ulcerative lesions during the summer months, especially when affected animals are refractive to antibiotic treatment alone.
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Affiliation(s)
- H Salant
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel.
| | - A Rojas
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel; Departamento de Parasitología, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica; Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - D Yardeny
- Department of Animal Sciences, Tel Hai College, Upper Galilee, Israel
| | - O Brenner
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - G Schvartz
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - G Baneth
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - E Dvir
- Department of Animal Sciences, Tel Hai College, Upper Galilee, Israel
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Bellier C, Gladieff L, Le Du F, Garnier Tixidre C, Berton-Rigaud D, Bonnard C, Lahrache A, Debbache A, Kacher-Damache A, Delplanque M, Suau D, Richard AC, Brenner O, Lahouegue A, Urbieta M, Gavoille C, Freyer G, Floquet A, Frank S, Kfoury M. 827P First real-life data on olaparib in 1st line (1stL) maintenance BRCA1/2 mutated epithelial ovarian cancer (EOC) in France: Descriptive analysis of 201 patients (pts) enrolled in the cohort temporary authorization for use (ATUc). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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3
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Affiliation(s)
- A. Shnaiderman-Torban
- Large Animal Department, Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
| | - A. Tatz
- Large Animal Department, Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
| | - G. Oreff
- Large Animal Department, Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
| | - O. Brenner
- Weizmann institute of Science; Rehovot Israel
| | - R. Dahan
- Large Animal Department, Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
| | - R. Ofri
- Ophthalmology, Small Animal Department; Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture; Hebrew University of Jerusalem; Rehovot Israel
| | - G. Kelmer
- Large Animal Department, Veterinary Medicine Teaching Hospital; Koret School of Veterinary Medicine; Robert H. Smith Faculty of Agriculture, Food and Environment; The Hebrew University of Jerusalem; Rehovot Israel
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Abstract
Many transgenic and knockout mouse models of prostate cancer have become available over the past decade. In this paper we describe a simple biopsy technique of the murine prostate. This technique allows sequential follow-up of the prostate in an individual mouse. Its use could also reduce the number of mice used in studies of the prostate gland.
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Affiliation(s)
- A Harmelin
- Department of Veterinary Resources, The Weizmann Institute of Science, Rehovot 76100, Israel.
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5
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Närhi K, Parri E, Nagaraj A, Kovanen P, Turkki R, Schoonenberg A, Brenner O, Kaustio M, Blom S, Verschuren E. 683: Ex vivo modelling of Kras-driven murine non-small cell lung cancer. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50602-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- D. Castel
- The Neufeld Cardiac Research Institute and Department of Physiology and Pharmacology; Sackler School of Medicine; Tel-Aviv University; Israel
| | | | - O. Doron
- Lahav Research Institute; Negev Israel
| | - O. Brenner
- Department of Veterinary Resources; The Weizmann Institute of Science; Rehovot Israel
| | - S. Meilin
- Neurology Division; MD Biosciences; Ness Ziona Israel
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Farber A, Belenky A, Malikova M, Brenner O, Brandeis Z, Migdal M, Orron D, Kim D. The evaluation of a novel technique to treat saphenous vein incompetence: preclinical animal study to examine safety and efficacy of a new vein occlusion device. Phlebology 2012. [DOI: 10.1258/phleb.2012.012003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objectives We tested a novel technique to treat great saphenous vein (GSV) incompetence in an animal model. Methods V-block (VVT Medical Ltd, Kfar Saba, Israel), an occlusion device composed of a nitinol frame and anchoring hooks, was percutaneously deployed at the saphenofemoral junction in 12 sheep. Four of the 12 sheep were treated with adjunctive liquid sclerotherapy. Animals underwent duplex ultrasound, venography and histopathological evaluation immediately postimplantation at 30, 60 and 90 days. Results V-block was successfully deployed in all animals without adverse events. There was no device migration at follow-up. Histopathological analysis demonstrated V-block to be lodged within the GSV and surrounded by fibrous tissue in all samples. Obliteration of the GSV lumen, widespread intimal loss and multifocal medial smooth muscle loss was noted. Conclusions In this animal study V-block was deployed without complications, remained in stable position and led to GSV occlusion. This device has promise for future use in humans.
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Affiliation(s)
- A Farber
- Division of Vascular and Endovascular Surgery, Boston Medical Center, Boston, MA, USA
| | - A Belenky
- Department of Diagnostic Radiology, Unit of Vascular and Interventional Radiology, Rabin Medical Center, Keren Kayemet Leisrael 7, Petah Tiqwa 49372
| | - M Malikova
- Division of Vascular and Endovascular Surgery, Boston Medical Center, Boston, MA, USA
| | | | - Z Brandeis
- VVT Medical Ltd, Sion 10, Yokneam 20692, Israel
| | - M Migdal
- VVT Medical Ltd, Sion 10, Yokneam 20692, Israel
| | - D Orron
- Marquette General Hospital, Marquette, MI, USA
| | - D Kim
- Division of Vascular and Endovascular Surgery, Boston Medical Center, Boston, MA, USA
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Elsner J, Zur G, Linder-Ganz E, Shani J, Brenner O, Hershman E, Shterling A, Guilak F. M-5 Can A Polycarbonate-Urethane Meniscal Provide Chondroprotection? Results in a Sheep Model. J Biomech 2010. [DOI: 10.1016/s0021-9290(10)70114-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Madar-Balakirski N, Tempel-Brami C, Kalchenko V, Brenner O, Varon D, Scherz A, Salomon Y. 260 Tumour vascular occlusion by vascular targeted photodynamic therapy. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71065-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Nahum R, Brenner O, Zahalka MA, Traub L, Quintana F, Moroz C. Blocking of the placental immune-modulatory ferritin activates Th1 type cytokines and affects placenta development, fetal growth and the pregnancy outcome. Hum Reprod 2004; 19:715-22. [PMID: 14998975 DOI: 10.1093/humrep/deh099] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Placenta immunomodulatory ferritin (PLIF) cDNA was recently cloned from the human placenta, where it is expressed in syncytiotrophoblast and decidual mononuclear cells. PLIF and its subcloned bioactive domain (C48), expressed in Escherichia coli, are immunosuppressive proteins and induce pronounced IL-10 production in vitro and in vivo. METHODS AND RESULTS PLIF serum level, measured by enzyme-linked immunosorbent assay, was elevated in pregnant mice throughout gestation and declined towards delivery. Blocking of PLIF activity by vaccination of mice with C48 prior to mating inhibited pregnancy development. Passive transfer of anti-C48 immunoglobulin (Ig) starting at 3.5-12.5 days post coitum (dpc) resulted in high rate of embryo resorption. Furthermore, treatment with anti-C48 Ig resulted in placental and embryonal growth restriction. At gestation day 13.5, growth retardation was especially notable in the placentae, while at 16.5 dpc it was pronounced in the embryos. Histopathological examination revealed that experimental placentae were globally hypoplastic and the labyrinth was strikingly pale and contained less maternal blood compared with control. Immune-activated spleen cells harvested at 13.5 dpc from anti-C48 Ig-treated pregnant mice secreted in vitro increased level of Th1 cytokines (IL-2, TNF-alpha, IL-12) and decreased level of Th2 cytokines (IL-10, IL-4, IL-5, IL-6) as compared with the level of the respective cytokines secreted by spleen cells from control pregnant mice. CONCLUSION This study provides the first in vivo evidence that PLIF plays a major role in placentation and embryonic growth.
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MESH Headings
- Animals
- Animals, Newborn/anatomy & histology
- Body Weight/physiology
- Cells, Cultured
- Concanavalin A/pharmacology
- Contraception, Immunologic
- Copulation
- Cytokines/metabolism
- Delivery, Obstetric
- Embryo Loss/immunology
- Embryonic and Fetal Development/drug effects
- Embryonic and Fetal Development/physiology
- Enzyme-Linked Immunosorbent Assay
- Female
- Ferritins/chemistry
- Ferritins/immunology
- Ferritins/pharmacology
- Ferritins/physiology
- Fetus/pathology
- Immunization, Passive
- Immunoglobulins/immunology
- Immunoglobulins/pharmacology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred ICR
- Placenta/drug effects
- Placenta/pathology
- Placentation
- Pregnancy
- Pregnancy Outcome
- Pregnancy Proteins/chemistry
- Pregnancy Proteins/immunology
- Pregnancy Proteins/pharmacology
- Pregnancy Proteins/physiology
- Pregnancy, Animal/blood
- Pregnancy, Animal/physiology
- Protein Structure, Tertiary/physiology
- Spleen/cytology
- Spleen/drug effects
- Spleen/metabolism
- Th1 Cells/metabolism
- Th2 Cells/metabolism
- Vaccination
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Affiliation(s)
- R Nahum
- Felsenstein Medical Research Center, Sackler School of Medicine Tel Aviv University, Rabin Medical Center, Petah Tikva 49100, Israel
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12
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Harmelin A, Pinthus JH, Friedmann-Morvinski D, Kaufman K, Brenner O. Lack of MHC expression and retention of ultrastructural characteristics by xenograft transmissible venereal tumor cells in SCID mice. Vet Immunol Immunopathol 2002; 86:245-9. [PMID: 12007890 DOI: 10.1016/s0165-2427(02)00036-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Canine transmissible venereal tumor (CTVT) is primarily a tumor of adult dogs with a high incidence of spontaneous regression. We recently reported a xenograft model of CTVT (XTVT) in NOD/SCID mice. XTVT cells retain cytological and histological features of CTVT as well as characteristic rearranged LINE/c-MYC junction [Am. J. Vet. Res. 62 (2001) 907]. In this paper, we demonstrate that XTVT cells maintain ultrastructural characteristics of CTVT and do not express MHC classes I and II molecules.
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MESH Headings
- Animals
- Disease Models, Animal
- Dog Diseases/immunology
- Dog Diseases/pathology
- Dogs
- Flow Cytometry
- Gene Expression Regulation, Neoplastic/immunology
- Genes, MHC Class I/immunology
- Genes, MHC Class II/immunology
- Major Histocompatibility Complex/immunology
- Major Histocompatibility Complex/physiology
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Microscopy, Electron
- Neoplasm Transplantation
- Specific Pathogen-Free Organisms
- Transplantation, Heterologous
- Venereal Tumors, Veterinary/immunology
- Venereal Tumors, Veterinary/pathology
- Venereal Tumors, Veterinary/ultrastructure
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Affiliation(s)
- A Harmelin
- Department of Veterinary Resources, The Weizmann Institute of Science, Rehobot 76100, Israel.
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13
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Abstract
Prion diseases are caused by abnormal folding of the prion protein. The paradigm is that the prion protein is not immunogenic because the immune system must be tolerant to such a self protein. In an attempt to identify immunogenic prion peptides, we immunized Lewis rats with peptides that fitted the MHC class II RT1.B(1)motif. Both humoral and cellular immunity to the prion peptides were obtained without any harmful effects to young animals. However, when 8-month-old rats were immunized, a sixth (6/36) of the rats developed severe skin inflammation with concomitant hair loss. These findings suggest that immunity to self-prion peptides can be readily induced in Lewis rats and that this immune response may have pathogenic consequences in older rats.
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Affiliation(s)
- L Souan
- Department of Immunology, The Weizmann Institute of Science, Rehovot, 76100, Israel
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14
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Levanon D, Brenner O, Negreanu V, Bettoun D, Woolf E, Eilam R, Lotem J, Gat U, Otto F, Speck N, Groner Y. Spatial and temporal expression pattern of Runx3 (Aml2) and Runx1 (Aml1) indicates non-redundant functions during mouse embryogenesis. Mech Dev 2001; 109:413-7. [PMID: 11731260 DOI: 10.1016/s0925-4773(01)00537-8] [Citation(s) in RCA: 156] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The human RUNX3/AML2 gene belongs to the 'runt domain' family of transcription factors that act as gene expression regulators in major developmental pathways. Here, we describe the expression pattern of Runx3 during mouse embryogenesis compared to the expression pattern of Runx1. E10.5 and E14.5-E16.5 embryos were analyzed using both immunohistochemistry and beta-galactosidase activity of targeted Runx3 and Runx1 loci. We found that Runx3 expression overlapped with that of Runx1 in the hematopoietic system, whereas in sensory ganglia, epidermal appendages, and developing skeletal elements, their expression was confined to different compartments. These data provide new insights into the function of Runx3 and Runx1 in organogenesis and support the possibility that cross-regulation between them plays a role in embryogenesis.
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Affiliation(s)
- D Levanon
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot 76100, Israel
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15
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Brenner O, Wakshlag JJ, Summers BA, de Lahunta A. Alaskan Husky encephalopathy--a canine neurodegenerative disorder resembling subacute necrotizing encephalomyelopathy (Leigh syndrome). Acta Neuropathol 2000; 100:50-62. [PMID: 10912920 DOI: 10.1007/s004010051192] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The gross and histopathological findings in the brain and spinal cord of five Alaskan Husky dogs with a novel incapacitating and ultimately fatal familial and presumed hereditary neurodegenerative disorder are described. Four dogs presented with neurological deficits before the age of 1 year (7-11 months) and one animal at 2.5 years old. Clinical signs in all dogs were of acute onset and included ataxia, seizures, behavioral abnormalities, blindness, facial hypalgesia and difficulties in prehension of food. In animals allowed to survive, the disease was static but with frequent recurrences. Pathological findings were limited to the central nervous system. Grossly visible bilateral and symmetrical cavitated foci were consistently present in the thalamus with variable extension into the caudal brain stem. Microscopic lesions were more widespread and included foci of bilateral and symmetrical degeneration in the basal nuclei, midbrain, pons and medulla, as well as multifocal lesions at the base of sulci in the cerebral cortex and in the gray matter of cerebellar folia in the ventral vermis. Neuronal loss with concomitant neuronal sparing, spongiosis, vascular hypertrophy and hyperplasia, gliosis, cavitation and transient mixed inflammatory infiltration were the main histopathological findings. In addition, a population of reactive gemistocytic astrocytes with prominent cytoplasmic vacuolation was noted in the thalamus. Lesions of this nature in this distribution within the neuroaxis have not been reported in dogs. The neuropathological findings resemble Leigh's disease/subacute necrotizing encephalomyelopathy of man. Neuronal sparing in conjunction with apparently transient astrocytic vacuolation point to the possible pathogenetic role of astrocytes in the evolution of these lesions. An inherited metabolic derangement of unknown nature is postulated as the cause of this breed-specific disorder.
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Affiliation(s)
- O Brenner
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA
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16
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Wakshlag JJ, de Lahunta A, Robinson T, Cooper BJ, Brenner O, O'Toole TD, Olson J, Beckman KB, Glass E, Reynolds AJ. Subacute necrotising encephalopathy in an Alaskan husky. J Small Anim Pract 1999; 40:585-9. [PMID: 10664957 DOI: 10.1111/j.1748-5827.1999.tb03028.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A 29-month-old female Alaskan husky was presented recumbent, tetraparetic and in a state of dementia, with blindness and cranial nerve deficits. The dog's progress was followed for over two months, as the signs resolved to an non-progressive mild hypermetria with slight proprioceptive ataxia, a diminished menace response and inability to prehend food. Magnetic resonance imaging (MRI) revealed bilateral cavitation extending from the thalamus to the medulla, with less pronounced degenerative lesions in the caudate nucleus, putamen and claustrum. Cerebrospinal fluid lactate and pyruvate concentrations were in their normal ranges. Necropsy and histological examination confirmed the MRI findings as well as neuronal degeneration of the cerebellar cortex in the vermis and degenerative changes in the neocortex at the depths of the cerebral sulci. In view of the similarity of lesions to subacute necrotising encephalomyelopathy, known as Leigh's disease in humans, a tentative diagnosis of a mitochondrial encephalopathy was made.
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Affiliation(s)
- J J Wakshlag
- Cornell University College of Veterinary Medicine, Ithaca, NY 14853, USA
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Brenner O, de Lahunta A, Cummings JF, Summers BA, Monachelli M. A canine encephalomyelopathy with morphological abnormalities in mitochondria. Acta Neuropathol 1997; 94:390-7. [PMID: 9341942 DOI: 10.1007/s004010050724] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A progressive encephalomyelopathy of insidious onset affecting a 16-month-old dog is described. Clinically, the dog was ataxic, stumbled into objects and showed mild behavioral abnormalities. Light microscopic findings included profound degeneration and astrogliosis of the optic pathways, loss of Purkinje neurons, focal bilateral and symmetrical brain stem spongiosis and diffuse neuroaxial astrogliosis with swollen and abnormally shaped nuclei. Ultrastructurally, there were giant and bizarre mitochondria within neuronal perikarya and axons as well as diffuse loosening of the cerebral and cerebellar neuropil. These neuropathological findings resemble the mitochondrial encephalomyopathies of man.
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Affiliation(s)
- O Brenner
- Department of Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6140, USA
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18
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Brenner O, de Lahunta A, Summers BA, Cummings JF, Cooper BJ, Valentine BA, Bell JS. Hereditary polioencephalomyelopathy of the Australian cattle dog. Acta Neuropathol 1997; 94:54-66. [PMID: 9224531 DOI: 10.1007/s004010050672] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A vacuolar degeneration affecting primarily the gray matter in the central nervous system (CNS) of young Australian Cattle Dogs is described. An initial presentation of seizures was followed by a progressive spastic tetraparesis. Grossly evident bilateral and symmetrical foci of malacia were in the nuclei of the cerebellum and brain stem and the gray matter of the spinal cord. Microscopically, vacuolation of glial cells, dilation of the myelin sheaths and reactive astrocytosis characterized mild CNS changes. More advanced lesions displayed progressive dissolution of the neuropil, prominent vacuolation of reactive astrocytes, numerous glial fibrillary acidic protein-positive coiled astrocytic processes, neuronal vacuolation and loss with relative sparing of large neurons. Ultrastructurally marked mitochondrial accumulation and swelling were seen in astrocytes. In the appendicular muscles, changes interpreted as long-term denervation atrophy accompanied by widespread expression of the neonatal isoform of myosin were observed. The character of the neurological sings, the nature and the distribution of the lesions within the neuroaxis have not been reported in domestic animals. An inherited biochemical defect, possibly mitochondrial, is proposed as the cause. Selected conditions with a bilateral and symmetrical distribution affecting the gray matter of domestic animals are summarized.
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Affiliation(s)
- O Brenner
- Department of Pathology, College of Veterinary Medicine, Comell University, Ithaca, NY 14853-6140, USA
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Dooley DJ, Mählmann H, Brenner O, Osswald H. Characterization of the dihydropyridine binding sites of rat neocortical synaptosomes and microvessels. J Neurochem 1987; 49:900-4. [PMID: 3039058 DOI: 10.1111/j.1471-4159.1987.tb00978.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The dihydropyridine binding sites associated with rat neocortical synaptosomes and microvessels were compared using an in vitro [3H]PN 200-110 [(+)-[methyl-3H]-isopropyl 4-(2,1,3-benzoxadiazol-4-yl)-1,4-dihydro-2,6-dimethyl-5- methoxycarbonylpyridine-3-carboxylate] binding assay. Saturation experiments yielded similar KD values (approximately 70 pM) and Bmax values (approximately 400 fmol/mg of protein) for the two membrane preparations. Interaction experiments with [3H]PN 200-110 and various calcium-modulating substances provided further evidence for the practically identical nature of the synaptosomal and microvascular dihydropyridine binding sites. These findings predict that lipophilic dihydropyridines, simultaneously occupying the two central binding sites, have the dual effect of altering neuronal function and local blood flow.
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Quast U, Brenner O. Modulation of [3H]muscimol binding in rat cerebellar and cerebral cortical membranes by picrotoxin, pentobarbitone, and etomidate. J Neurochem 1983; 41:418-25. [PMID: 6308160 DOI: 10.1111/j.1471-4159.1983.tb04758.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Modulation of [3H]muscimol binding by picrotoxin, pentobarbitone, and etomidate was investigated in rat cerebellar and cerebral cortical membranes. In cerebellum, at 37 degrees C in the presence of chloride ions (150 mM), picrotoxin and picrotoxinin decreased specific [3H]muscimol binding to 43 +/- 3% of control, with an EC50 of 1.2 +/- 0.1 microM. [3H]Muscimol saturation experiments in the presence and absence of picrotoxin indicated that the picrotoxin effect was primarily due to a loss of high-affinity muscimol sites with KD approximately equal to 10 nM. Pentobarbitone enhanced specific [3H]muscimol binding to 259 +/- 3% of control, with EC50 = 292 +/- 37 microM, and etomidate increased binding to 298 +/- 18%, with EC50 = 7.1 +/- 1.0 microM. The influence of temperature and chloride ion concentration on these effects was investigated by comparing experiments at 37 and 0 degrees C in the presence or absence of chloride at constant ionic strength. The results indicate that studies at 0 degrees C underestimate the coupling between GABA receptors and barbiturate sites and that they greatly overestimate the importance of chloride ions in this phenomenon. In cerebral cortical membranes (37 degrees C, 150 mM Cl-), the effect of picrotoxin was similar to that observed in cerebellum, whereas the effects of pentobarbitone and etomidate were greater, but occurred at higher concentrations.
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Tomkiewicz J, Brenner O. Union attitudes and the "manager of the future". Pers Adm 1979; 24:67-70, 72. [PMID: 10243662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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22
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Brenner O, Donovan H, Murtagh BL. TOTAL THYROIDECTOMY IN THE TREATMENT OF PATIENTS WITH CONGESTIVE HEART FAILURE AND ANGINA PECTORIS. Br Med J 1934; 2:624-9. [PMID: 20778568 DOI: 10.1136/bmj.2.3848.624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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