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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 57 (1979), S. 225-235 
    ISSN: 1432-1440
    Keywords: Angina pectoris ; Diagnostic criteria ; Myocardial infarction ; Serum myoglobin ; Radioimmunoassay ; Angina pectoris ; Diagnostik ; Myokardinfarkt ; Radioimmunoassay ; Serum-Myoglobin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Ein Radioimmunoassay zur Bestimmung von Serum-Myoglobin (SMb) wird vorgestellt. Bei 50 gesunden Probanden beträgt der Meßwertbereich 0–90 ng/ml. Serielle Bestimmungen an 10 Patienten mit akutem Myokardinfarkt beziehungsweise Angina pectoris (AP) zeigen, daß SMb bei Myokardinfarkt vor CK und CK-MB pathologische Werte erreicht (im Mittel 250±95 ng/ml bei stationärer Aufnahme 3,3±1,4 h nach AP-Beginn). Die gleichzeitig bestimmte NAC-aktivierte CK liegt zu diesem Zeitpunkt noch im Normbereich und erreicht pathologische Werte erst 6,2±1,9 h nach Schmerzbeginn. Der Peak des Serum-Myoglobins liegt mit 506±194 ng/ml 8,8±2,8 h, der der CK mit 905±475 mU/ml 20,0±7,8 h nach Anginabeginn. CK-MB und CK unterscheiden sich im zeitlichen Verlauf nur unwesentlich. Ein Patient mit ausgeprägter AP hat bei sonst unauffälligem Enzymmuster pathologisch erhöhte SMb-Werte. Methodische und klinische Ergebnisse werden diskutiert.
    Notes: Summary A radioimmunoassay was developed to determine serum myoglobin (SMb). 50 healthy persons showed values between 0 and 90 ng/ml. Serial tests of 10 patients following acute myocardial infarction or during angina pectoris (AP) indicated that SMb reached pathological values before CK and CK-MB (average 250±95 ng/ml at the time of hospitalisation which corresponds to 3.3±1.4 h after beginning of angina pectoris). At hospitalisation the simultaneously determined CK was within normal limits and reached pathological values only 6.2±1.9 h after the onset of angina. Maximum of SMb was 506±194 ng/ml occurring 8.8±2.8 h after the beginning of AP, maximum of CK was 905±475 mU/ml occurring 20.0±7.8 h after AP. CK-MB and CK differed only slightly in their time course. One patient with severe AP had pathologically increased SMb values whilst all other enzymes were completely normal. Methodical and clinical results are discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-1803
    Keywords: alcoholic cardiomyopathy ; enzymes ; nicotinamide adenine dinucleotide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We investigated in rat hearts if chronic alcohol consumption causes an enzymatic adaption of the energy-supplying metabolism and/or of the alcohol-aldehyde metabolizing system. 16 rats were pair-fed with a liquid diet for 10 weeks. Ethanol was added to this diet to amount for 35% of calories in eight rats and was isocalorically replaced by saccharose in the control group. Selected enzyme activities of the glycolysis, the glycogenolysis, the β-oxidation of fatty acids, the citric acid cycle and the alcohol-aldehyde oxidizing system were determined in the supernatants of the homogenized hearts. The intracellular redox state was assessed by measurement of the myocardial nicotinamide coenzymes. Enzyme activities of the alcohol-aldehyde metabolizing system did not alter after chronic alcohol intake. As we found that the capacity to oxidize acetaldehyde was much higher than the ability to oxidize ethanol we must question the role of acetaldehyde in inducing alcoholic cardiomyopathy. Chronic ethanol treatment significantly increased the activity of glyceraldehyde-3-phosphate dehydrogenase and decreased the activity of glycogen phosphorylase. The impairment of the hydroxyacylCoA dehydrogenase was not significant. The other measured enzyme activities did not alter, nor the intracellular redox state. The enzymatic adaption indicates an impaired glycogenolysis, an increased glycolysis, and probably a diminished β-oxidation of fatty acids. We expect that the measurement of the responding enzyme activities in human endomyocardial biopsies should be a good tool to further classify cardiomyopathies according to biochemical criteria.
    Type of Medium: Electronic Resource
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