Document Detail


Development and characterization of a rapid assay for bedside determinations of cardiac troponin T.
MedLine Citation:
PMID:  7586254     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The appearance of cardiac proteins in blood is the most specific and sensitive indicator of acute myocardial cell necrosis. The measurement of cardiac markers, however, is time consuming and requires sophisticated equipment. To facilitate the biochemical detection for acute myocardial cell necrosis, a whole-blood rapid assay device for cardiac troponin T detection was developed that provides a test result within 20 minutes. METHODS AND RESULTS: Monoclonal antibody M7 is labeled with gold particles, and antibody 1B10 is labeled with biotin. Both antibodies, as well as buffer substances and detergents, are adsorbed onto paper fleeces mounted below an application well. Heparinized blood (160 microL) applied to this well solubilizes the dry chemistry reagents. Blood cells are separated from plasma via a glass-fiber fleece. The immunocomplexes formed are concentrated within the reading zone by binding of the biotin-labeled antibody with streptavidine immobilized to the test device. Troponin T bound to the test device serves as a control. The detection limit of this assay is 0.18 microgram/L with a cross-reactivity with skeletal troponin T of 0.5%. In clinical analyses involving 25 healthy volunteers, 62 patients with chest pain but without myocardial ischemia, 35 patients with acute myocardial infarction, 24 patients with minor myocardial cell damage due to radiofrequency ablation, and 35 patients with unstable angina, the rapid assay was comparable to the troponin T enzyme immunoassay in regard to sensitivity and specificity. CONCLUSIONS: This newly developed assay allows accurate, rapid, and convenient diagnosis of acute myocardial cell necrosis.
Authors:
M Müller-Bardorff; H Freitag; T Scheffold; A Remppis; W Kübler; H A Katus
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Circulation     Volume:  92     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1995 Nov 
Date Detail:
Created Date:  1995-12-21     Completed Date:  1995-12-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2869-75     Citation Subset:  AIM; IM    
Affiliation:
Medizinische Universitätsklinik, Heidelberg, Germany.
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MeSH Terms
Descriptor/Qualifier:
Angina, Unstable / blood,  diagnosis
Biological Markers / blood
Case-Control Studies
Enzyme-Linked Immunosorbent Assay
Humans
Immunoassay / methods
Myocardial Infarction / blood,  diagnosis*
Sensitivity and Specificity
Time Factors
Troponin / blood*
Troponin T
Wolff-Parkinson-White Syndrome / blood,  diagnosis
Chemical
Reg. No./Substance:
0/Biological Markers; 0/Troponin; 0/Troponin T
Comments/Corrections
Comment In:
Circulation. 1996 Nov 1;94(9):2313-4   [PMID:  8901698 ]

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