2007
DOI: 10.1111/j.1365-2990.2007.00868.x
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Classical sheep transmissible spongiform encephalopathies: pathogenesis, pathological phenotypes and clinical disease

Abstract: It is generally assumed that neuroinvasion results from infection of the enteric nervous system neurones subsequent to amplification of infectivity in lymphoid tissues and later spread via sympathetic and parasympathetic pathways. The evidence for this is, however, circumstantial. Accumulation of PrP d and presence of infectivity in tissues other than the nervous and lymphoreticular systems gives insights on the ways of transmission of infection and on food safety.

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Cited by 112 publications
(110 citation statements)
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“…Lack of correlation of brain PrP d and clinical signs has been reported in sheep scrapie [20], and the absence of both indicators of disease in almost half of infected goats in this study underlines the limits of their use in monitoring herds for infection.…”
Section: Implications For Surveillance Of Goat Tsecontrasting
confidence: 66%
See 1 more Smart Citation
“…Lack of correlation of brain PrP d and clinical signs has been reported in sheep scrapie [20], and the absence of both indicators of disease in almost half of infected goats in this study underlines the limits of their use in monitoring herds for infection.…”
Section: Implications For Surveillance Of Goat Tsecontrasting
confidence: 66%
“…3c and 3d). Therefore, both biochemical and intracellular truncation patterns of PrP d in brain tissue of this goat were compatible with experimental BSE in small ruminants [20,30]. However, in the retropharingeal lymph node, PrP d aggregates within the cytoplasm of tingible body macrophages were labelled with both Bar224 and 12B2 (Figs.…”
Section: Relationship Between Infection and Clinical Diseasementioning
confidence: 55%
“…A doença pode apresentar-se na forma clássica em ovinos e caprinos geneticamente susceptíveis (AVMA 2002, Goldmann & Baylis 2004, González et al 2009, OIE 2009) e na forma atípica, diagnosticada na Noruega, por Benestad et al (2003), denominada "Nor98", posteriormente observada em outras partes do mundo (Arsac et al 2007,Cosseddu 2007, Jeffrey & González 2007, Seuberlich et al 2007, Colussi et al 2008, Fediaevsky et al 2008, Loiacono et al 2009, Martinez 2010 (Fernandes et al 1978), mas a primeira notiϐicação oϐicial à Organização Mundial de Saúde Animal (OIE) foi de um surto, também no RS, ocorrido em 1985, (Pereira 1996). Posteriormente, entre 1995 e 2010, foram registrados surtos, no RS, Paraná (PR), Mato Grosso do Sul (MS), Mato Grosso (MT), Minas Gerais (MG) e São Paulo (SP) (OIE 2011a).…”
Section: Introductionunclassified
“…Associam-se ao acúmulo de proteína priônica alterada no sistema nervoso central (SNC) e as lesões histológicas compreendem principalmente vacuolização e morte neural (1) . São muitas as enfermidades que compõem o grupo das ETTs, incluindo encefalopatia espongiforme bovina (EEB) em bovinos, scrapie em pequenos ruminantes e a doença de Creutzfeldt-Jakob (DCJ) em humanos (2) .…”
Section: Introductionunclassified
“…É endêmica em vários países da Europa, Canadá e Estados Unidos, porém Austrália e Nova Zelândia são consideradas livres da doença (3,4) . À semelhança do que ocorre nas demais EETs, na scrapie há acúmulo da isoforma anormal (PrP Sc ) da proteína priônica celular (PrP C ) não apenas no SNC, mas também no sistema linforreticular (SLR) e, variavelmente, em outros tecidos e fluidos corporais (1) .…”
Section: Introductionunclassified