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Biomedical subjects

N V Kolesnikova

Publications and source records attributed to N V Kolesnikova.

9 recordsLinked to original sources
PubMed1988

[Comparative study of the somatic conjugation of chromosomes in the neural ganglia of male and female Drosophila melanogaster D-32].

The frequency of somatic conjugation of the 2nd and 3d chromosome pairs has been analysed in male and female neural ganglia from Drosophila melanogaster larvae D-32 line. The frequency of conjugation found for males was 1.5 times lower than for females. On this basis a supposition concerning less duration of homologous conjugation in males has been put forward. It is suggested that it is due to the differences in space arrangement of homologous chromosomes holding their conjugation.

Animals↗
PubMed1983

[Multiple forms of glycosyltransferases in Golgi complex membrane fractions].

The distribution of multiple forms of galactosyltransferase (EC 2.4.1.22) and sialyltransferase (EC 2.4.99.1) from the microsomes and Golgi complex membrane fractions of rat liver was investigated. Three fractions of Golgi membranes, namely GF1, GF2, and GF3, differing in their morphology and marker enzyme activity, were obtained. A simultaneous increase of glycosyltransferases under study was observed in fractions GF3 less than GF2 less than GF1. Using isoelectrofocusing, the presence of at least 6-8 forms of galactosyl- and sialyltransferases in the microsomes and Golgi fraction was revealed. The distribution patterns of multiple forms along the pH gradient for each membrane fraction were found to be identical. However, the ratios of highly active and low active forms were specific for each fraction. The similarity of multiple form spectra for galactosyl-and sialyltransferase suggest their tight functional interaction and a possible "en block" packing of membrane glycosyltransferases.

Animals↗
PubMedDate not supplied

[Neutrophil granulocyte function in an acute experiment with cyclophosphane].

Experiments of mice F1(CBAx57BL) were made to study cyclophosphamide effects on the number of circulating neutrophil granulocytes (NG) and on their main functions (receptor, phagocytic, function of microbicidal systems). NG count, the number of NG carrying receptors to sheep red cells, complementary EAC=POH, phagocytic and digestive activities and NBT-test were measured 15 and 60 min after administration of small (0.5 mg/kg) and large (150 mg/kg) doses of cyclophosphamide. The results suggest clear dose- and time-related effect of the drug which can induce both depression and stimulation. The data obtained can be utilized in developing approaches to prevention of complications caused by NG dysfunctions in immunosuppressive therapy of tumors, lymphoproliferative diseases, organ and tissue transplantation.

Animals↗