Effects of Rodiola extract on the cytotoxic activity of natural killer cells of the liver, spleen, lungs and small intestine in rats after partial hepatectomy

In experiments on Wistar rats the cytotoxic activity of NK on the 1, 2, 10 days after partial hepatectomy (PH) and the application of Rodiola extract (RE) was studied. After 5 injections of RE the NK activity in gut increased by 112%, and after 12 ones (towards the end of experiment) by 222% in the spleen. The decreasing of this index in a first day after PH in lung, liver and gut was shown to restore in these tissues to the end of experiment. The absence of NK cytotoxicity diminishing just after PH in all the tissues was shown in operated animals, receiving RE and the decreasing of this index was found only in the lungs (by 335%).     

The Drosophila tissue polarity gene starry night encodes a member of the protocadherin family.

The tissue polarity genes control the polarity of hairs, bristles and ommatidia in the adult epidermis of Drosophila. We report here the identification of a new tissue polarity gene named starry night (stan). Mutations in this essential gene alter the polarity of cuticular structures in all regions of the adult body. The detailed polarity phenotype of stan on the wing suggested that it is most likely a component of the frizzled (fz) pathway. Consistent with this hypothesis, stan appears to be downstream of and required for fz function. We molecularly cloned stan and found that it encodes a huge protocadherin containing nine cadherin motifs, four EGF-like motifs, two laminin G motifs, and seven transmembrane domains. This suggests that Stan functions in signal reception, perhaps together with Fz.     

The taxonomic composition of macrozoobenthos in central Russian small karst lakes

The macrozoobenthos taxonomic composition in small karst lakes of Vladimir oblast is studied for the first time. In the structure of bottom communities, 149 taxa one rank below the genus have been found. Chironomid larvae and other amphibiotic animals, as well as oligochaetes, prevail. Most of them are species widely distributed in the surface waters of European Russia. The highest macrozoobenthos species diversity was recorded in neutral lakes, and the lowest diversity was in lakes with weakly acidic waters.     

Cartographic analysis of the population of amphibians,reptiles, and birds of the West Siberian plain and Altai

For the entire territory of West Siberia, including its plain and mountainous parts, two maps were constructed for populations of amphibians together with reptiles, and of birds. Communities of these classes of vertebrates differ from one another in their spatial differentiation. The differences are demonstrated for the plain and mountainous territories considered jointly and separately.     

Lysozyme concentration in the loose connective tissue of animals with different species sensitivity to brucellosis]

Lysozyme content was determined in the subcutaneous cellular tissue of guinea pigs and albino rats differing by species resistance to brucella infection. Experiments were conducted on intact animals and those inoculated subcutaneously with live Br. abortus 19-BA vaccine. Connective tissue was taken from the site of the vaccine administration and from the contralateral side (control). Observations showed connective tissue of the animals highly sensitive to brucella infection to be exceedingly poor in this enzyme; as to connective tissue of albino rats with low sensitivity--it contained high amount of this enzyme. Lysozyme content increased considerably in the animals belonging to both species in the inflammatory focus developing at the site of the vaccine inoculation.