Brain beta-adrenergic and GABA-ergic receptors in rats after exposure to high doses of ionizing radiation

The radioactive ligands, [3H]dihydroalprenolol and [3H]muscimol, were used to estimate the condition of beta-adrenoreceptors of the brain cortex and GABA-receptors of the cerebellum during transient neurologic disorders caused by irradiation of rats with high-energy (20 MeV) electrons of 200 Gy. No significant changes were observed in the GABA-ergic brain system while the changes in beta-adrenoreceptors of the brain were pronounced and manifested by the loss by the receptors of their ability to bind the specific ligand, dihydroalprenolol. The changes observed were reversible and correlated with the development of neurologic disorders.     

Streptococcus group B in a maternity home with a decentralized system of newborn infant care (of the mother-child type)

In a maternity hospital with the decentralized system of infant care the presence of the group B streptococcal colonization of puerperants (13.0 +/- 4.5%), newborn infants (25.0 +/- 4.4%) and medical staff (16.9 +/- 3.2%) was established. The strains isolated in this hospital belonged to 13 different serotypes and antigenic combinations with type 1 a/c dominating among them (28.7 +/- 4.8%). Group B streptococci were found to be transmitted by the vertical way in one out of two colonized mother-child pairs, in all other cases the nosocomial spread of streptococci occurred.     

The microbial colonization of the skin of newborn infants rooming in with the mother in maternity homes]

The formation of skin biocenosis in children under the conditions of a maternity hospital with the joint care of mother and child was studied with the use of commercial bacteriological imprints manufactured in the USSR. The colonization of newborn infants in maternity hospitals with opportunistic, saprophytic and normal microflora was established. In newborn infants aged up to 5 years low skin resistance to colonization and, as a consequence, frequent colonization of the skin with opportunistic and saprophytic microflora was observed.     

Molecular genetic analysis of sorghum cultivated in Ukraine

PCR-based analysis of polymorphism between genera and species of sorghum, soryz, and related forms (maize, rice) was carried out. The level of polymorphism reached 100% within the sample, while interspecific polymorphism (sorghum and soryz species) amounted to 96.2%, thus evidencing the wide range of variation between the studied species. Genotypes formed clusters according to their specific belonging.