Degradation of Cardiac Troponin I in Serum Complicates Comparisons of Cardiac Troponin I Assays
نویسندگان
چکیده
منابع مشابه
Degradation of cardiac troponin I in serum complicates comparisons of cardiac troponin I assays.
BACKGROUND Up to a 20-fold variation in serum cardiac troponin I (cTnI) concentration may be observed for a given patient sample with different analytical methods. Because more limited variation is seen for control materials and for purified cTnI, we explored the possibility that cTnI was present in altered forms in serum. METHODS We used four recombinantly engineered cTnI fragments to study ...
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We have analyzed by different immunological methods the proteolytic degradation of cardiac troponin I (cTnI) in human necrotic tissue and in serum. cTnI is susceptible to proteolysis, and its degradation leads to the appearance of a wide diversity of proteolytic peptides with different stabilities. N- and C-terminal regions were rapidly cleaved by proteases, whereas the fragment located between...
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ژورنال
عنوان ژورنال: Clinical Chemistry
سال: 1999
ISSN: 0009-9147,1530-8561
DOI: 10.1093/clinchem/45.7.1018