title: [Histochemical study of the cholinesterase activity in the structures of the rat heart normally and during exposure to a pulsed electromagnetic field].
abstract: Histotopography and activity of true and false cholinesterases in the non-inbred white rat hearts, normal and at the effect of pulsed electromagnetic field (80 kA/m) have been demonstrated by Karnovsky-Roots histochemical method. It has been stated that a single 6 hours' application of the pulsed electromagnetic field results in an increased cholinesterase activity in all cardiac structures, besides neurocytes. If the application is continued, cholinesterase activity is progressively decreasing and its minimum is observed on the 10th day of the stimulation. From the 15th day on, increasing enzymatic activities are observed, various for different enzymes: that of acetylcholinesterase even by the 30th day of the stimulation by the magnetic field does not reach the normal level, while that of cholinesterase exceeds this level. Mast cells are noted to appear along the cholinergic neural fibres. A suggestion is made on possible exchange between them by mediator acetylcholine. Electrocardiographic data have demonstrated that certain correlation exists between acetylcholinesterase activity and the cardiac function.
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis; D000818:Animals; D002802:Cholinesterases / Q000032:analysis*; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena; D004789:Enzyme Activation; D006651:Histocytochemistry; D008297:Male; D009206:Myocardium / Q000201:enzymology*; D051381:Rats; D013997:Time Factors
chemical_list: D000110:Acetylcholinesterase; D002802:Cholinesterases
vernacular_title: Gistokhimicheskoe izuchenie aktivnosti kholinésteraz v strukturakh serdtsa krys v norme i pri vozdeĭstsvii impul'snogo élektromagnitnogo polia.