PMID- 7704948 OWN - NLM STAT- MEDLINE DCOM- 19950508 LR - 20190706 IS - 0009-8981 (Print) IS - 0009-8981 (Linking) VI - 231 IP - 1 DP - 1994 Nov TI - Different time courses of cardiac contractile proteins after acute myocardial infarction. PG - 47-60 AB - For the first time we have compared time courses of cardiac myosin light chain-1 (MLC-1), beta-type myosin heavy chain (MHC), troponin T (TnT), myoglobin, creatine kinase (CK) and CKMB in the same patients with acute myocardial infarction (AMI). Blood samples were serially collected in 23 patients with first-time AMI. All but 3 patients received intravenous thrombolytic treatment. TnT and MLC-1 time courses were biphasic in most patients and showed two distinct peaks in 13 and 8 patients, respectively. MHC time courses were usually monophasic. Only 1 patient showed a biphasic MHC time course with two distinct peak values. Although MHC and MLC were lower by about the fourth day after onset of AMI in early reperfused patients, reperfusion did not qualitatively alter MLC and MHC release (no significant influence on the first appearance in blood or on time to peak). MLC and MHC peaks correlated closely (r = 0.75, P = 0.0001), whereas TnT peaks were correlated less closely with MLC or MHC peaks (r = 0.58 each, P < 0.007). Peak values of all cardiac contractile proteins correlated closely and significantly with CKMB peaks (0.75 < or = r < or = 0.81, P < or = 0.0006). Myoglobin was the first marker to increase in blood after AMI and showed the earliest peaks, whereas MHC increased latest showing the latest peaks. TnT increased significantly (P = 0.0001) earlier than MLC and MHC. These results can be explained by the impact of the intracellular compartmentation of a cardiac protein on the rapidity with which it is released after AMI. FAU - Mair, J AU - Mair J AD - Department of Medical Chemistry, University of Innsbruck Medical School, Austria. FAU - Wagner, I AU - Wagner I FAU - Jakob, G AU - Jakob G FAU - Lechleitner, P AU - Lechleitner P FAU - Dienstl, F AU - Dienstl F FAU - Puschendorf, B AU - Puschendorf B FAU - Michel, G AU - Michel G LA - eng PT - Comparative Study PT - Journal Article PL - Netherlands TA - Clin Chim Acta JT - Clinica chimica acta; international journal of clinical chemistry JID - 1302422 RN - 0 (Biomarkers) RN - 0 (Contractile Proteins) RN - 0 (Isoenzymes) RN - 0 (Myoglobin) RN - 0 (Troponin) RN - 0 (Troponin T) RN - EC 2.7.3.2 (Creatine Kinase) RN - EC 3.6.4.1 (Myosins) SB - IM MH - Adult MH - Aged MH - Biomarkers/analysis MH - Contractile Proteins/*metabolism/pharmacokinetics MH - Creatine Kinase/metabolism/pharmacokinetics MH - Female MH - Humans MH - Isoenzymes MH - Male MH - Middle Aged MH - Myocardial Infarction/*metabolism MH - Myocardium/chemistry MH - Myoglobin/blood/pharmacokinetics MH - Myosins/chemistry/metabolism/pharmacokinetics MH - Reperfusion MH - Time Factors MH - Troponin/metabolism/pharmacokinetics MH - Troponin T EDAT- 1994/11/01 00:00 MHDA- 1994/11/01 00:01 CRDT- 1994/11/01 00:00 PHST- 1994/11/01 00:00 [pubmed] PHST- 1994/11/01 00:01 [medline] PHST- 1994/11/01 00:00 [entrez] AID - 0009-8981(94)90253-4 [pii] AID - 10.1016/0009-8981(94)90253-4 [doi] PST - ppublish SO - Clin Chim Acta. 1994 Nov;231(1):47-60. doi: 10.1016/0009-8981(94)90253-4.