title: Elemental composition of ischemic myocardium determined by x-ray microanalysis.
abstract: Elemental composition of ischemic myocardium was attempted with x-ray microanalysis. Energy dispersive spectrum exhibited calcium K alpha and phosphorus K alpha peaks from mitochondrial deposits, and Ca K alpha peaks from nucleus, contraction bands, and Z lines of the ischemic myocardial cell. Ca and P contents were confirmed with wavelength dipersive spectrometers. Mg was present in the mitochondrial deposits which lacked Ca. This study suggests a formation of phosphate salt of Ca at different intracellular sites and also of Mg with mitochondrial deposits.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D003327:Coronary Disease / Q000378:metabolism*; D004285:Dogs; D004577:Electron Probe Microanalysis; D008274:Magnesium / Q000378:metabolism; D008854:Microscopy, Electron; D008929:Mitochondria, Heart / Q000378:metabolism / Q000648:ultrastructure; D009206:Myocardium / Q000378:metabolism* / Q000648:ultrastructure; D010710:Phosphates / Q000378:metabolism
chemical_list: D010710:Phosphates; D008274:Magnesium; D002118:Calcium