Biology

Flow Cytometry Investigations Indicators Light Scattering in the Heterogeneous Population Immune System Cells from Mice Immunized with F1 Capsular Antigen, Yersinia pestis

Authors: Kozhevnikov Н. V., Kurylina А. F., Kravtsov А. L., Shchukovskaya Т. N., Bugorkova T. V.

Aim – heterogeneous populations of blood leukocytes and abdomi- nal cavity of mice immunized with a capsular antigen of a plague microbe. Male mice of the BALB / c line were used in the work. The reaction of the cells of the immunophagocytic system was assessed by flow cytometry, in terms of the intensity of direct and lateral light scattering, correlating with changes in the cell volume and intracellular granularity.

The Influence of Roof Space Arrangement on Rock Pigeon` Penetration Level (Columba livia Gmelin, 1789)

Authors: Kukhta А. Е., Moskvitin S. S., Bolshakova N. P., Chapkina Т. V.

The statistics of correlation of rock pigeon occurrence depending on its construction in the roof rooms were presented (Columba Livia Gmelin, 1789). The relevance of the study conditioned by the need of some anthropogenic objects protection (monuments, granaries, airports) against birds particularly from rock pigeon which forms numerous flocks near the points of residence. The problem of bird hazard is particularly topical for airports where the pigeon is one of the most dangerous for the aircraft.

Pollen Grain Size Polymorphism in Late Tulip (Tulipa gesneriana L., 1753) Cenopopulations within the Territory of “Ivanovo Field” Natural Boundary

Authors: Belyachenko A. A., Belyachenko Y. А.

One of the large populations of the late tulip (Tulipa gesneriana L., 1753) grows in Fedorovsky district of the Saratov region on the territory of the regional “Ivanovo field” natural boundary where it is presented by three cenopopulations. The work is aimed at studying of mature pollen morphology of the given cenopopulation plants characterised by various variants of flower parts coloration. We analysed the dimension and other morphological features of the pollen fixed in 2012 when rich diversity of floral envelope coloration was registrated in the research area.

Photodynamic Effect of Red Laser Radiation on the Growth of Staphylococcus aureus Strains with the Use of Photoditazine

Authors: Egorova А. V., Brill G. E., Bugaeva I. O., Tuchina E. S., Nechayeva O. V.

The influence of red laser irradiation on the growth of colonies of Staphylococcus aureus and photodynamic effect of the photosensi- tizer Photoditazin were performed. It is established that the radiation of a semiconductor red laser (λ = 660 nm, 100 mW/cm2.) has a direct bacteriostatic effect on the growth of S. aureus. This effect on the standard strain is manifested only when relatively high doses are used (180 J/cm2). Inhibition of bacterial growth reaches 36%.

The Specifics of Tobacco Gametophyte Mutations Display Depending on Temperature

Authors: Lobanova L. P., Kolesova А. Y., Alatortseva Т. А., Nurusheva I. A.

The research of extreme low (10°С) and high (37°С) temperatures influence under in vitro conditions on phenotypic display of three mutations in Nicotiana tabacum L. with of a certain morphological type domination was conducted. The BG-141.4 line is character- ized by low-cellular embryo sacs formation, in the SG-27/4 line the trait of the increased number of nucleus and cells in embryo sacs exhibits, the line М-3 differs by high frequency of cenocyte low- cellular embryo sacs.

Study of the Polymorphism DEFB4A Gene in Individuals Suffering from Periodontal Inflammatory Diseases

Authors: Verkhovsky R. A., Glinskaya E. V.

Inflammatory periodontal disease is considered a mass dental disease, the etiology of which is not yet fully understood.

Gamaside Mites of the Small Mammals Habitant in the Krasnoarmeisky Locality of the Saratov Region

Authors: Porshakov A. M., Chekashov V. N., Zakharov К. S.

Gamaside mites have ancient, strong links to a number of pathogens of natural-focal diseases. They constitute a considerable part of ectoparasites living on small mammals. Ac- cording to literature data and own research results, the fauna of Gamaside mites in the Saratov Region includes 44 species. Objec- tive of the study was to investigate the current state of Gamaside mite fauna ecologically associated with rodents in the territory of the Krasnoarmeisk District of the Saratov Region. The research was conducted in September-October, 2010 and in August, 2012.

Polyembryony Phenomenon in Apomictic Maize Line in vivo and in vitro

Authors: Alatortseva Т. А., Apanasova N. V., Lobanova L. P.

The article is focused on studying of cytoembryological preconditions of polyembryony in the not pollinated ovary of the apomictic maize line АТ-1 under in vitro and in vivo conditions. For an assessment of a nutrient medium role in polyembryony induction a relative analysis of the embryo sacs in cultivated in vitro and native plants ovaries has been lead. Dynamics of formation in them an apomictic twin proem- bryo is traced. In the study line the cause of polyembryony can be either an independent divisions in derivatives of egg cell, or division in additional egg cells.

To the Question about the Reciprocal Conformity of the Transition Zone in the Chest Leads ECG, Heart Rate and Cerebral Hemodynamics

Authors: Sevryukova G. A., Isupov I. B., Tovmasian L. A.

This work is devoted to research of features of the vegetative support of activity of young persons, their cerebral hemodynamics depending on the localization of the transition zone in the chest leads ECG in the process of performing active orthostatic test. Registration of ECG, parameters of cardiorhythmography, reoentsefalografii was carried out using the diagnostic complex «Valenta».

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