[Effect of soy protein isolates in the diet of animals on the histochemical characteristics of the digestive tract]. / Vliianie izoliatov belkov soi v ratsione zhivotnykh na gistokhimicheskie kharakteristiki pishchevaritel'nogo trakta.

Histochemical methods were used to study the mucus-producing processes in the stomach and intestine of experimental animals under conditions of long-term feeding with soybean protein isolates. These methods helped in determining the action of neutral glycoproteins and sulfated polysaccharides in the stomach and intestine of the test animals. The experiments conducted have shown the absence of side effects of soybean isolates on the morphology of the stomach and intestine and on the qualitative polysaccharide composition of their epithelial secretions.

[Pre- and postganglionic pathways conducting central sympathetic chrono- and inotropic effects to the heart of the cat]. / Pre- i postganglionarnye puti, provodiashchie tsentral'nye simpaticheskie khrono- i inotropnye vliianiia k serdtsu u koshek.

In anesthetized cats, the preganglionic input to the stellate ganglion involved Th3 and Th4 white rami. The chronotropic influences to the heart travelled through caudal anastomose whereas inotropic those--through inferior cardiac nerve. Neurons of these nerves are distributed over the ganglion stellate in different sites. The data obtained suggest that the pathways relating central sympathetic influences, are specialized.

[Comparative histochemical characteristics of the secretion of superficial gastric epitheliocytes]. / Gistokhimicheskaia kharakteristika sekreta pokrovnykh épiteliotsitov zheludka v sravnitel'nom aspekte.

Comparative histological investigation of the gastric pavement epitheliocytes in a number of species (amphibia, reptile, birds, mammals, man including) has demonstrated that in amphibia, protective function of the stomach is connected with the presence of a certain neutral carbohydrate component in its secrete. In reptiles, the barrier function is performed by the neutral carbohydrate component and sialosaccharides, in birds, besides the carbohydrates mentioned, sulphosaccharides, as well. Histochemical properties of the mammal stomach as a barrier are determined by phylogenetically dependent peculiarities of food specialization.

[Histochemical study of the digestive organs of rats on board for the space flight of the satellite "Cosmos-690"]. / Gistokhimicheskoe issledovanie organov pishchevareniia krys, nakhodivshikhsia v kosmicheskom polete na sputnike "Kosmos-690".

The digestive organs of rats exposed to a combined effect of space flight factors and irradiation were examined. The surface and foveal epithelium of the stomach as well as mucocytes of the fundal glands showed a drastically reduced content of the neutral carbohydrate component. The foveal epithelium and mucocytes of fundal necks also exhibited a significant decrease of the sulfomucin content. The large and small intestines showed a lowered amount of goblet-cells and their secretion. Pancreatic acinar cells displayed different changes in the content of enzymic proteins having cation properties. The above histochemical changes did not return to normal 36 days after irradiation and 26--27 days after readaptation to the Earth environment.

[Histochemical characteristics of the secretory cells of gastric glands compared]. / Gistokhimicheskaia kharakteristika sekretornykh kletok zhelez zheludka v sravnitel'nom aspekte.

The work is dedicated to complex histological studies of the secreting cells in the gastric fundal glands, in their comparative aspect. In the representatives of Amphibia, Reptilians and birds, histochemical differentiation of oxyntopeptic cells was demonstrated to be independent on the peculiarities of the animal nutrition. In mammals, histochemical characteristic of the carbohydrate component in the glandular secreting cells depends on the type of nutrition.

[Histochemical study of the digestive organs of rats after a flight on "Kosmos-605"]. / Gistokhimicheskoe issledovanie organov pishchevareniia krys posle poleta na "Kosmos-605".

The histochemical study of the stomach, small and large intestines and pancreas of rats flown aboard the biosatellite Cosmos-605 as well as of synchronous and vivarium controls demonstrated a significant decline in the mucine producing capacity of epithelial cells of the stomach of the flight rats on the R + 1 day. The study showed an increased content of sialo- and sulphosaccharides in goblet cells of cryptae of large intestine and a reduced content of free cation protein in the acinar cells of the pancreas of flight rats. The changes were transient and disappeared by the R + 26 day.