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Identification of the Highly Polymorphic Prion Protein Gene () in Frogs ).
Animals (Basel)
January 2025
Department of Biological Sciences, Andong National University, Andong 36729, Republic of Korea.
Prion diseases are fatal neurodegenerative diseases that can be transmitted by infectious protein particles, PrPs, encoded by the endogenous prion protein gene (). The origin of prion seeds is unclear, especially in non-human hosts, and this identification is pivotal to preventing the spread of prion diseases from host animals. Recently, an abnormally high amyloid propensity in prion proteins (PrPs) was found in a frog, of which the genetic variations in the gene have not been investigated.
View Article and Find Full Text PDFFirst Report of Polymorphisms and Genetic Characteristics of Protein Gene () in Cats.
Animals (Basel)
November 2024
Korea Zoonosis Research Institute, Jeonbuk National University, 820-120 Hana-ro, Iksan 54531, Republic of Korea.
Prion diseases are fatal neurodegenerative disorders caused by the misfolding of the normal cellular prion protein (PrP) into its infectious isoform (PrP). Although prion diseases in humans, sheep, goats, and cattle have been extensively studied, feline spongiform encephalopathy (FSE) remains poorly understood. Genetic factors, particularly polymorphisms in the prion protein gene () and protein gene (), have been linked to prion disease susceptibility in various species.
View Article and Find Full Text PDFThis report presents the results of surveillance on transmissible spongiform encephalopathies in cattle, sheep, goats, cervids and other species, and genotyping in sheep and goats, carried out in 2023 by 27 Member States (MS, EU27), the United Kingdom (in respect of Northern Ireland, (XI)) and other eight non-EU reporting countries: Bosnia and Herzegovina, Iceland, Montenegro, North Macedonia, Norway, Serbia, Switzerland (the data reported by Switzerland include those of Liechtenstein) and Türkiye. In total, 948,165 cattle were tested by EU27 and XI (-3%, compared with 2022), with five atypical BSE cases reported (four H-type: two in Spain, one in France and one in Ireland; one L-type in the Netherlands); and 46,096 cattle by eight non-EU reporting countries with two atypical BSE cases reported by Switzerland. Three additional atypical BSE cases were reported by UK (1), USA (1) and Brazil (1).
View Article and Find Full Text PDFA Rapid Cognitive and Motor Decline: A Case of Misdiagnosed Sporadic Creutzfeldt-Jakob Disease.
Cureus
November 2024
Acute Medicine, Peterborough City Hospital, Peterborough, GBR.
Creutzfeldt-Jakob disease (CJD) is a fatal neurodegenerative disorder that leads to rapid cognitive decline, dementia, and neurological deterioration. CJD has several forms, including sporadic CJD (sCJD), which accounts for most cases, and variant CJD (vCJD), linked to exposure to bovine spongiform encephalopathy (BSE or mad cow disease). The disease is caused by abnormal prion proteins, which damage the brain and lead to death.
View Article and Find Full Text PDFLack of Evidence for Transmission of Atypical H-Type Bovine Spongiform Encephalopathy Prions (H-BSE Prions) by Intracranial and Oral Challenges to Nonhuman Primates.
Microbiol Immunol
January 2025
Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan.
Bovine spongiform encephalopathy (BSE) is a prion disease in cattle caused by classical-type (C-), L-type (L-), or H-type (H-) BSE prions. While C-BSE prions are zoonotic agents responsible for variant Creutzfeldt-Jakob disease, L- and H-BSE prions are believed not to be connected to human prion diseases. However, L-BSE prions have been shown to transmit to cynomolgus monkeys (Macaca fascicularis), suggesting they may have zoonotic potential.
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