Article (Scientific journals)
Immunoquantitative PCR for prion protein detection in sporadic Creutzfeldt-Jakob disease.
Gofflot, Stéphanie; Deprez, Manuel; Elmoualij, Benaïssa et al.
2005In Clinical Chemistry, 51 (9), p. 1605-11
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Keywords :
Adolescent; Aged; Aged, 80 and over; Blotting, Western; Brain Chemistry; Creutzfeldt-Jakob Syndrome/diagnosis; Endopeptidase K/metabolism; Enzyme-Linked Immunosorbent Assay; Female; Humans; Immunohistochemistry; Male; Middle Aged; Polymerase Chain Reaction; Prions/analysis/metabolism; Sensitivity and Specificity
Abstract :
[en] BACKGROUND: The most common human prion disorder is Creutzfeldt-Jakob disease (CJD); it includes sporadic, familial, iatrogenic, and variant subtypes. Diagnostic tests aim at detection with the highest specificity of very small deposits of abnormal prion protein (PrP). METHODS: We used immunoquantitative PCR (iqPCR) to detect proteinase K-resistant PrP (PrPRes) in tissue from the middle frontal gyrus of 7 patients with sporadic CJD and 7 non-CJD cases. We compared iqPCR with routine optimized ELISA, Western blotting, and immunohistochemical analyses. RESULTS: The 4 methods showed similar 100% sensitivity and specificity for the diagnosis of CJD. Along with high specificity, however, iqPCR had a threshold for PrP(Res) detection at least 10-fold lower than that of the classic ELISA. CONCLUSIONS: iqPCR is a new method for PrPRes detection that combines 100% specificity with a detection threshold at least 10-fold lower than classic techniques. This method may improve the detection of minute PrPRes deposits in tissues and body fluids and thus be useful for diagnostic and sterilization applications.
Disciplines :
Laboratory medicine & medical technology
Anatomy (cytology, histology, embryology...) & physiology
Biochemistry, biophysics & molecular biology
Author, co-author :
Gofflot, Stéphanie ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Deprez, Manuel ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Elmoualij, Benaïssa ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Histologie humaine
Osman, Awad
Thonnart, Jean-François ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Histologie humaine
Hougrand, Olivier  ;  Centre Hospitalier Universitaire de Liège - CHU > Anatomie pathologique
Heinen, Ernst ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Histologie humaine
Zorzi, Willy ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Histologie humaine - Département des sciences biomédicales et précliniques
Language :
English
Title :
Immunoquantitative PCR for prion protein detection in sporadic Creutzfeldt-Jakob disease.
Publication date :
2005
Journal title :
Clinical Chemistry
ISSN :
0009-9147
eISSN :
1530-8561
Publisher :
American Association for Clinical Chemistry, Washington, United States - District of Columbia
Volume :
51
Issue :
9
Pages :
1605-11
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 January 2009

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