Academic literature on the topic 'Real-Time Quaking-Induced Conversion'

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Journal articles on the topic "Real-Time Quaking-Induced Conversion"

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Atarashi, Ryuichiro, Kazunori Sano, Katsuya Satoh, and Noriyuki Nishida. "Real-time quaking-induced conversion." Prion 5, no. 3 (2011): 150–53. http://dx.doi.org/10.4161/pri.5.3.16893.

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Kang, Hae-Eun, Youngwon Mo, Raihah Abd Rahim, Hye-Mi Lee, and Chongsuk Ryou. "Prion Diagnosis: Application of Real-Time Quaking-Induced Conversion." BioMed Research International 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/5413936.

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Prions composed of pathogenic scrapie prion protein (PrPSc) are infectious pathogens that cause progressive neurological conditions known as prion diseases or transmissible spongiform encephalopathies. Although these diseases pose considerable risk to public health, procedures for early diagnosis have not been established. One of the most recent attempts at sensitive and specific detection of prions is the real-time quaking-induced conversion (RT-QuIC) method, which measures the activity of PrPScaggregates or amyloid formation triggered by PrPScseeds in the presence of recombinant PrP. In this review, we summarize prions, prion diseases, and current approaches to diagnosis, including the principle, conditions for assay performance, and current diagnostic applications of RT-QuIC.
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Godal, D., SLR Simon, K. Cheng, and JD Knox. "Un nouveau test diagnostique de la maladie de Creutzfeldt-Jakob : la conversion provoquée par tremblement en temps réel (RT-QulC)." Relevé des maladies transmissibles au Canada 41, no. 8 (2015): 221–25. http://dx.doi.org/10.14745/ccdr.v41i08a02f.

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Haley, Nicholas J., Rachel Rielinger, Kristen A. Davenport, Katherine O'Rourke, Gordon Mitchell, and Jürgen A. Richt. "Estimating chronic wasting disease susceptibility in cervids using real-time quaking-induced conversion." Journal of General Virology 98, no. 11 (2017): 2882–92. http://dx.doi.org/10.1099/jgv.0.000952.

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Atarashi, Ryuichiro, Katsuya Satoh, Kazunori Sano, et al. "Ultrasensitive human prion detection in cerebrospinal fluid by real-time quaking-induced conversion." Nature Medicine 17, no. 2 (2011): 175–78. http://dx.doi.org/10.1038/nm.2294.

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Manca, Matteo, and Allison Kraus. "Defining the Protein Seeds of Neurodegeneration using Real-Time Quaking-Induced Conversion Assays." Biomolecules 10, no. 9 (2020): 1233. http://dx.doi.org/10.3390/biom10091233.

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Neurodegenerative diseases are characterized by the accumulation of disease-related misfolded proteins. It is now widely understood that the characteristic self-amplifying (i.e., seeding) capacity once only attributed to the prions of transmissible spongiform encephalopathy diseases is a feature of other misfolded proteins of neurodegenerative diseases, including tau, Aβ, and αSynuclein (αSyn). Ultrasensitive diagnostic assays, known as real-time quaking-induced conversion (RT-QuIC) assays, exploit these seeding capabilities in order to exponentially amplify protein seeds from various biospecimens. To date, RT-QuIC assays have been developed for the detection of protein seeds related to known prion diseases of mammals, the αSyn aggregates of Parkinson’s disease, dementia with Lewy bodies, and multiple system atrophy, and the tau aggregates of Alzheimer’s disease, chronic traumatic encephalopathy, and other tauopathies including progressive supranuclear palsy. Application of these assays to premortem human biospecimens shows promise for diagnosis of neurodegenerative disease and is an area of active investigation. RT-QuIC assays are also powerful experimental tools that can be used to dissect seeding networks within and between tissues and to evaluate how protein seed distribution and quantity correlate to disease-related outcomes in a host. As well, RT-QuIC application may help characterize molecular pathways influencing protein seed accumulation, transmission, and clearance. In this review we discuss the application of RT-QuIC assays as diagnostic, experimental, and structural tools for detection and discrimination of PrP prions, tau, and αSyn protein seeds.
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Budhram, Adrian, Ryan G. Taylor, Jeff Fuller, Jorge G. Burneo, J. David Knox, and Stephen H. Pasternak. "The Predictive Value of Endpoint Quaking-Induced Conversion in Creutzfeldt-Jakob Disease." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 46, no. 5 (2019): 595–98. http://dx.doi.org/10.1017/cjn.2019.72.

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ABSTRACT:Creutzfeldt-Jakob disease (CJD) is a fatal neurological illness for which accurate diagnosis is paramount. Real-time quaking-induced conversion (RT-QuIC) is a prion-specific assay with high sensitivity and specificity for CJD. The Canadian endpoint quaking-induced conversion (EP-QuIC) test is similar, but unlike RT-QuIC there is little data regarding its diagnostic utility in clinical practice. In this exploratory predictive value analysis of EP-QuIC in CJD, the negative predictive value (NPV) and positive predictive value (PPV) was 100% and 83%, respectively, with one false-positive result identified. Re-testing this sample with an optimized EP-QuIC protocol eliminated this false-positive result, leading to a PPV of 100%.
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Cheng, Keding, Angela Sloan, Brooks Waitt, et al. "Altered rPrP substrate structures and their influence on real-time quaking induced conversion reactions." Protein Expression and Purification 143 (March 2018): 20–27. http://dx.doi.org/10.1016/j.pep.2017.10.007.

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McGuire, Lynne I., Alexander H. Peden, Christina D. Orrú, et al. "Real time quaking-induced conversion analysis of cerebrospinal fluid in sporadic Creutzfeldt-Jakob disease." Annals of Neurology 72, no. 2 (2012): 278–85. http://dx.doi.org/10.1002/ana.23589.

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Ballan, Guillaume, Olivier Flabeau, Frédéric Bourdain, et al. "La méthode « Real-Time Quaking Induced Conversion » pour la protéine prion, un examen à connaître." Revue Neurologique 176 (September 2020): S5—S6. http://dx.doi.org/10.1016/j.neurol.2020.01.062.

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Dissertations / Theses on the topic "Real-Time Quaking-Induced Conversion"

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Cramm, Maria. "Untersuchungen zu den selbst-replizierenden Eigenschaften des pathogenen Prion-Proteins beim Menschen." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-86BD-3.

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Prionkrankheiten sind übertragbare, tödliche neurodegenerative Erkrankungen beim Menschen und bei Tieren. Sie basieren auf der Konversion des zellulären Prion-Proteins (PrPC) in seine pathogene Form (PrPSc). Durch diese Konversion sind Prionkrankheiten pathogen und übertragbar. Bis heute ist weder der dem zugrunde liegende Mechanismus verstanden noch eine Behandlung gefunden worden. Die sichere Diagnose einer sporadischen Prionkrankheit ist ausschließlich mittels Gehirnbiopsie möglich, weswegen zu Lebzeiten des Patienten häufig nur die Diagnose einer wahrscheinlichen Prionkrankheit erfolgt. Zusammen mit der klinischen Heterogenität der Prionkrankheiten weisen neueste Erkenntnisse auf das Vorhandensein mehrerer humaner Prionstämme hin. Für die Suche nach Medikamenten fehlt ein geeigneter Wirkstoff-Suchtest, der auf der humanen Pathogenese basiert, für einen hohen Durchsatz geeignet und gut reproduzierbar ist. Die real-time quaking-induced conversion (RT-QuIC), eine neu entwickelte in vitro-Methode, erlaubt den Nachweis von bisher nicht messbaren Mengen an PrPSc in humanem Liquor cerebrospinalis (Liquor). Dazu werden die selbst-replizierenden Eigenschaften des PrPSc genutzt. Erste Untersuchungen weisen auf distinkte Eigenschaften humaner Prionkrankheiten in der RT-QuIC hin. Zum Einsatz in Diagnostik und Forschung bedarf es jedoch einer umfassenden Validierung der Methode für die Anwendung mit humanem Liquor. In dieser Arbeit beträgt die Sensitivität der RT-QuIC 85,5 % und die Spezifität 99,5 % für humane Prionkrankheiten. Die Reproduzierbarkeit im Ringversuch ist gut bis exzellent. Die Kurzzeitlagerungen der Liquorproben bei Raumtemperatur und +4°C sowie die Langzeitlagerung bei −80°C und das wiederholte Einfrieren und Auftauen haben keinen Einfluss auf die Testergebnisse. Jedoch führt die Kontamination mit Blut zu falsch-negativen Resultaten. Diese Ergebnisse weisen auf eine Eignung der RT-QuIC zur sicheren Diagnose von Prionkrankheiten zu Lebzeiten der Patienten hin. Zur Charakterisierung des Reaktionspotentials möglicher humaner Prionstämme wurden Liquorproben von verschiedenen humanen Prionkrankheiten wie bspw. der sporadischen und der genetischen Form mittels RT-QuIC untersucht. Die Auswertung der Daten zeigt distinkte Eigenschaften des PrPSc im Liquor, die moduliert werden durch die Form der Prionkrankheit, den Prnp Codon 129-Genotyp und die Krankheitsdauer. Diese Ergebnisse zeigen das Potential der RT-QuIC, die selbst-replizierenden Eigenschaften des PrPSc im Liquor zu untersuchen, womit erstmals eine Methode zur Verfügung steht, um diese Effekte in Patienten während der symptomatischen Phase zu studieren. Zur Nutzung der RT-QuIC als neuartige Methode zur Wirkstoffsuche wurde die Wirkung mehrerer Stoffe auf die RT-QuIC-Reaktion untersucht. Doxyzyklin inhibiert diese Reaktion sowohl in Korrelation mit der Dosis als auch mit dem Zeitpunkt der Zugabe. Diese Ergebnisse weisen auf eine Eignung der RT-QuIC zur Suche von Stoffen hin, die den PrP-Konversionsprozess inhibieren und zeigen die inhibierende Wirkung von Doxyzyklin auf die in-vitro-Amplifikation von PrPSc.
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Book chapters on the topic "Real-Time Quaking-Induced Conversion"

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Satoh, Katsuya, Ryuichiro Atarashi, and Noriyuki Nishida. "Real-Time Quaking-Induced Conversion for Diagnosis of Prion Disease." In Prions. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7244-9_21.

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Schmitz, Matthias, Niccolò Candelise, Franc Llorens, and Inga Zerr. "Amplification and Detection of Minuscule Amounts of Misfolded Prion Protein by Using the Real-Time Quaking-Induced Conversion." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7816-8_16.

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Conference papers on the topic "Real-Time Quaking-Induced Conversion"

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Kobayashi, R., M. Noda, M. Sawamura, H. Yamakado та M. Sohgawa. "A Novel Detection of Biomarker Molecule of α-synuclein for Parkinson Disease by Phospholipid Liposome-Immobilized Cantilever Biosensor Using Real-Time Quaking-Induced Conversion Method". У 2019 IEEE SENSORS. IEEE, 2019. http://dx.doi.org/10.1109/sensors43011.2019.8956615.

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