Creatine kinase and neuron-specific enolase: serum markers of cell damage in the central nervous system in boxers
Deutscher übersetzter Titel: | Kreatinkinase und neuronenspezifische Enolase: Serum-Markersubstanzen von Zellschaeden im Zentralnervensystem von Boxern |
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Autor: | Horner, Eithne B.; Lee, Clive; Tipton, Keith F.; OBrien, Moira; Phillips, Jack P. |
Erschienen in: | Clinical journal of sport medicine |
Veröffentlicht: | 3 (1993), 3, S. 144-148, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1050-642X, 1536-3724 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199310067697 |
Quelle: | BISp |
Abstract
Creatine kinase (CK) isoenzymes, brain specific (CK-BB) and cardiac muscle specific (CK-MB), have been used as serum markers for brain and cardiac injury. CK-BB is found in high concentrations in the brain where it is produced by astrocytes. In this study, CK-BB and -MB isoenzymes were detected using enzyme-linked immunoabsorbent assay techniques employing monoclonal antibodies. No detectable cross-reactivity occurred in the measuring range 0-1,000 micro-g/l and the detection limit was 0.01 micro-g/l. Neuron-specific enolase (gamma-gamma-enolase; NSE) is a specific isoenzyme of the glycolytic enzyme enolase, which is characterised by its consistent occurrence in the cytoplasm of mature neurons. It was detected using a double antibody radioimmunoassay with measuring range and detection limit of 2.0-200 micro-g/l and 2.0 micro-g/l, respectively. Blood samples were obtained with informed consent from adult amateur oarsmen before and after a rowing ergometer test and from adult amateur boxers before and after a bout. No significant changes were found between the pre- and postexercise serum levels of CK-BB, CK-MB, or NSE in the oarsmen, providing no evidence of neuronal damage, even at maximal exercise. Both CK-BB and NSE were significantly raised after boxing, with CK-MB levels unchanged. These serum markers indicate damage to both astrocytes and mature neurons with leakage of these intracellular enzymes into the circulation and identify boxing as a cause of acute brain injury. Verf.-Referat (gekuerzt)