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Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, [1] are a group of progressive, incurable, and fatal conditions that are associated with the prion hypothesis and affect the brain and nervous system of many animals, including humans, cattle, and sheep.
A prion / ˈ p r iː ɒ n / ⓘ is a misfolded protein that induces misfolding in normal variants of the same protein, leading to cellular death.Prions are responsible for prion diseases, known as transmissible spongiform encephalopathy (TSEs), which are fatal and transmissible neurodegenerative diseases affecting both humans and animals.
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Gerstmann–Sträussler–Scheinker syndrome (GSS) is an extremely rare, always fatal (due to it being caused by prions) neurodegenerative disease that affects patients from 20 to 60 years in age. It is exclusively heritable, and is found in only a few families all over the world. [ 1 ]
Creutzfeldt–Jakob disease (CJD), also known as subacute spongiform encephalopathy or neurocognitive disorder due to prion disease, is a fatal neurodegenerative disease. [ 4 ] [ 1 ] Early symptoms include memory problems, behavioral changes, poor coordination, and visual disturbances. [ 4 ]
This disease is unusual in that, unlike other prion diseases, it does not present with myoclonus or ataxia. Instead, the initial presentation involves anxiety, depression, and memory impairment before progression into dementia. This dementia has a slow course, also atypical for a prion disease, and will eventually lead to the death of the ...
Variably protease-sensitive prionopathy (VPSPr) (formerly known as Protease Sensitive Prionopathy) is a sporadic prion protein disease first described in an abstract for a conference on prions in 2006, and this study was published in a 2008 report on 11 cases. The study was conducted by Gambetti P., Zou W.Q., and coworkers from the United ...
The 2021 French moratorium on prion research was a three-month moratorium on research on prions in France. The moratorium was announced in July 2021 by several public research institutions after a retired lab worker was diagnosed with Variant Creutzfeldt–Jakob disease and came two years after the death of Émilie Jaumain from the same disease after acquiring it in a lab accident.