[Effect of mesenchymal stem cells and entero-absorbent on cardiac function in rats following local irradiation of the chest].

Cardiac function in Wistar male rats was assessed by ECG records for 28 days following exposure of the chest to γ-rays at a dose of 6 Gy, dose rate 4 Gy/min. The exposed rats experienced a moderate cardiac ischemia and a certain increase in the load on the atria. The use of clay of Kaluga deposit and mesenchymal stem cells reduced the adverse radiation effects.

[Experimental study of the effect of detoxification with enterosorbents on the function of irradiated myocardium].

Increase in intoxication products, such as medium size peptides, indole and myoglobin, in urine was observed in Wistar rats after exposure of their chest to gamma-radiation at a dose of 6 Gy (dose rate 4 Gy/min). The rats exhibited moderate ischemic ECG. Administration of enterosorbents, such as Smekta and Clay of Kaluga deposit, to the irradiated rats resulted in the decrease of the toxicant content in the animals and the recovery of the cardiac function on the 28th day.

[Mechanisms of detoxification efficiency of new enterosorbent in combined radiation pathology].

Studies with rats and white mice demonstrated that combined radiation injury (CRI) comes to reducing protease activity in small intestine tissues. In liver tissue the activity of cathepsine D increased under the action of new enterosorbent--clay of Kaluga deposit ("CKD"). In blood serum of the damaged animals the amount of histogenic toxins--middle mass molecules (MMM) and oligopeptides decreased after "CKD" administration.

[Specific effect of attenuated strain of Francisella tularensis on the development of radiation induced lesions in experimental animals and effictiveness of antibacterial therapy for lesions induced by radiation combined with virulemt strain of the bacteria].

For study of the effects of whole-body gamma-radiation (1 and 4 Gy) on the response of the body to administration of vaccines and virulent strains of tularemia 206 outbred white mice were used. The results of the study shown that the administration of attenuated bacterial cells in 5 days after exposure to radiation (1 and 4 Gy) caused more severe post-radiation effects and the increase in the number of died animals. The severity of the disease was less if mice were vaccinated in 26 days after irradiation (4 Gy).

[Development of acute exudative inflammation in rats upon perftoran infusion].

The effect of the perftoran--a blood replacing emulsion with multifunctional properties--on the biochemical parameters of blood serum has been studied in rats with acute exudative inflammation. It is established, that perfloran does not influence the adaptive biochemical reactions on early terms of inflammation development. At the same time, perftoran essentially reduces exudate volume, however this effect is short-time upon single infusion of the preparation.

Effect of perftoran on macroglobulin content in the plasma and peritoneal exudate of rats with acute exudative inflammation (peritonitis).

The effect of blood substitute perftoran on the content of alpha(1)- and alpha(2)-macroglobulins in the plasma and exudate was studied in rats with acute exudative inflammation. After intravenous injection of perftoran macroglobulin content increased in the plasma, but remained unchanged in the peritoneal fluid.

Complexes of smooth muscle tropomyosin with F-actin studied by differential scanning calorimetry.

Differential scanning calorimetry (DSC) and light scattering were used to analyze the interaction of duck gizzard tropomyosin (tropomyosin) with rabbit skeletal-muscle F-actin. In the absence of F-actin, tropomyosin, represented mainly by heterodimers, unfolds at 41 degrees C with a sharp thermal transition. Interaction of tropomyosin heterodimers with F-actin causes a 2-6 degrees C shift in the tropomyosin thermal transition to higher temperature, depending on the tropomyosin/actin molar ratio and protein concentration.

Use of stable analogs of myosin ATPase intermediates for kinetic studies of the "weak" binding of myosin heads to F-actin.

It is known that ternary complexes of myosin subfragment 1 (S1) with ADP and the Pi analogs beryllium fluoride (BeFx) and aluminum fluoride (AlF4-) are stable analogs of the myosin ATPase intermediates M* x ATP and M** x ADP x Pi, respectively. Using kinetic approaches, we compared the rate of formation of the complexes S1 x ADP x BeFx and S1 x ADP x AlF4- in the absence and in the presence of F-actin, as well as of the interaction of these complexes with F-actin. We show that in the absence of F-actin the formation of S1 x ADP x BeFx occurs much faster (3-4 min) than that of S1 x ADP x AlF4- (hours).

[Clinical morphological aspects of chronic gastroduodenitis in patients with vibration disease].

The article covers data of endoscopy, histologic and bacteriologic study of gastric lavage in 55 vibration disease patients (random select). Duodenal peptic ulcer was found in 1 patient, gastric polyp--in 1 patient, erosive gastroduodenitis in 14 (25.45%) patients, chronic gastroduodenitis without destruction of mucosa--in 39 (70.

Influence of neuropeptides on the processes of higher nervous activity in primates. The action of cyclic analogs of enkephalins on the behavior of the lower monkeys.

The effect of two cyclic enkephalin analogs (IVS-43 and IVS-46) on the group and individual behavior of rhesus macaques and hamadryas baboons has been studied. A pronounced influence of IVS-46 on competitive and operant goal-directed behavior of the monkeys was identified.

[Evaluation of the effectiveness of the use of pefloxacin in combined radiation-thermal injury].

The efficacy of pefloxacin, a novel promising antibacterial drug of the group of fluoroquinolones, was studied on mice against doxycycline in the prevention and treatment of infectious complications of radiation/thermal injury. According to the data on the effect of the antibiotics on the resistance to exogenic infection and the development of dysbacteriosis pefloxacin was recommended for the use in the scheme of combined therapy of radiation/thermal injury.

[The effect of neuropeptides on the processes of higher nervous activity in primates. The action of cyclic analogs of enkephalins on the behavior of lower monkeys].

The influence of 2 cyclic enkephaline analogues (IVS-43 and IVS-46) on group and individual behaviour of rhesus and baboon monkeys was studied. The effect of IVS-46 on competitive and operant goal-directed behaviour of the monkeys was expressed. Possible mechanisms of functional reorganization of the higher nervous activity of primates under the influence of neuropeptides are discussed.

Kinetics of interaction of myosin subfragment 1 isoforms with F-actin.

The interaction of the myosin subfragment-1 (S-1) isoforms containing different alkali light chains A1 and A2 with F-actin has been studied using the stopped-flow technique and sedimentation in an analytical ultracentrifuge. The data obtained suggest a different mode of attachment of the S-1 isoforms to F-actin filaments.

[An analysis of the joint activities of primates in a situation of delayed spatial choice].

A leader-dominant baboon of a couple took practically all the food in the situation of spatial delayed choice. The subdominant baboon managed to get some food, too, using fast changes of behavioral tactics during the experimental session. The obvious negative state of the subdominant baboon resulted in a severe neurotic breakdown.

[The comparative action of relanium and oxytocin on higher nervous activity in lower monkeys].

Effects of relanium and oxytocin on higher nervous activity was studied in four rhesus monkeys (Macaca mulatta) and two baboons (Papio hamadryas). During observation of the animals in enclosure tranquilizing effect was seen only after relanium administration. Under the same conditions oxytocin practically did not change the general behaviour pattern of monkeys.

[A quantitative analysis of primate motor activity in a situation of delayed spatial choice. The individual behavioral reactions].

Speed of movements in food getting responses of baboons, total time of the response, trajectories of the movements and other parameters revealed obvious changes during formation of conditioned activity. The data obtained suggest that many quantitative characteristics of the primate motor activity are specifically related to various aspects of complex behavioral responses.

[A comparative evaluation of the changes in the duration of "hexenal sleep" in acute radiation and combined radiation-thermal lesions].

In experiments with Wistar rats it was found that the increase in the length of the "hexenal dream" during the first week after the effect of a mixture of radiation and heat is much more pronounced than that observed after exposure to radiation alone and independent of the severity of a radiation component (gamma radiation, 4, 6 and 7.5 Gy). The peculiarities revealed in the hypnotic effect of hexenal develop against the background of the postirradiation aggravation of hypoalbuminemia and decrease in the liver ATP.

Polycondensation reactions of certain biologically essential molecules on mineral surfaces.

Methods of detecting extraterrestrial forms of organic matter should take into account the results of research in the effects of irradiation on the synthesis of biopolymers. Processes occurring on clay mineral surfaces and on the surfaces of minerals of different kinds are illustrated and the possible role of clays in prebiological evolution is discussed.

[The clinical and immunomorphological characteristics of diffuse toxic goiter].

The presence of HLA antigens B8 and DR3 in an individual is associated with his predisposition to developing Basedow's disease. A comparative study of a clinical course and immunological characterization of this disease in 208 patients, divided with relation to the presence or absence of the above antigens, showed that the disease developed in patients with HLA B8 and DR3 at a younger age and was accompanied twice as more frequently by ophthalmopathy. Thyrotoxicosis relapsed among these patients in conservative therapy much more frequently.