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Examined were 74 patients ranging in age from 6 to 48 years with dysplastic scoliosis. Disorders in the system of hemostasis were revealed in 67 patients. Including the 25 operated ones. The operative blood loss of more than 20 % of the circulating blood volume was noted 2 times more often in patients with the disorders in the system of hemostasis, mainly with the VIII factor deficiency. Intravenous administration of a cryoprecipitate contributed to restoration of the normal VIII factor level and more than 2-fold decrease in operative blood loss.

Interaction of saturated and unsaturated derivatives of spin-labelled fatty acids (2,2,6,6-tetramethyl-4-palmitoylpiperidil-l-oxyl (I) and synthetized by us 2,2,6,6-tetramethyl-4-oleoylpiperidil-1-oxyl (II) with sarcoplasmic reticulum membranes, retina rod outer segments and erythorocyte ghosts was studied. ESR spectra of the probe I are practically unresolved singlets, whereas ESR spectra of the probe II appear as more of less resolved triplet signals. The difference in ESR spectra of the probes I and II is the result of distribution of the probe I in pure lipid regions of membranes, the probe II being located both in lipid bilayer and hydrophobic areas of proteins.