Morphology of tissue components of layers of the rat myocardium in the early stages of myocardial hypertrophy

Department of Morphology and Cytology, Medico-Biological Faculty, N. I. Pirogov Second Moscow Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR D. S. Sarkisov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 113, No. 2, pp. 210–211, February, 1992.     

Changes in hemodynamic indices of dogs with experimental cholesterol atherosclerosis

Summary In dogs with experimental atherosclerosis the decrease of the ECG voltage was greated and occurred more often in the first lead. Changes and inversion of the T wave, displacement of the ST interval above and below the isoelectric lines, extrasystolic arrhythmia, and signs of atrioventricular block were also noted here. The BCG showed a reduction of the total amplitude, sloping of the BCG wave complexes, and early M, splitting of wave I, and deepening of the K. The changes in the ECG and BCG pursed the type observed in patients suffering from coronary insufficiency. The velocity of the pulse wave spread remained unchanged and any alterations therein apparently set in only at the later stages of atherosclerosis.(Presented by Active Member AMN SSSR V. V. Parin) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny Vol. 49, No. 5, pp. 41–45, May, 1960     

Cortical coordination in dogs with experimental atherosclerosis

Summary The phenomenon of theEEG voltage is caused not by the reduced activity of the cortical cells, but by the presence of excitations which are uniform in rhythm, as well as of stimulating reactions possessing different significance for the animal. One of these excitations is connected with the protective reaction arising from atherosclerosis, while another is associated with the reaction mobilizing the organism in another direction, which does not conform to the requirements of theprotective reaction. The formation of cortical coordination takes place during the simultaneous action of the stimuli provoking both of these reactions. In these conditions of desynchronization, the EEG components reflect the conflict stage in the formation of cortical coordination. The effect of experimental atherosclerosis on the cortical activity includes reduction of the cortical excitation as a result of which the conflict stage becomes protracted and is not transformed into the final stage—that of formed coordination—for a long period of time.Department of Clinical and Experimental Physiology (Head Active Member AMN SSSR V. V. Parin) of the Central Postgraduate Medical Institute (Director M.D. Kovrigina)(Presented by Active Member AMN SSSR V. V. Parin) Translated from Byulleten' Èksperimental'noi Biologii i Meditsiny, Vol. 49, No. 6, pp. 47–54, June, 1960