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排序方式: 共有57条查询结果,搜索用时 8 毫秒
1.
R. N. Khramov I. M. Santalova L. I. Fakhranurova A. A. Manokhin N. B. Simonova D. I. Rzhevsky A. N. Murashev 《Biophysics》2010,55(3):447-452
The action of solar light transformed by special screens has been studied on CD-1 male mice. In the active control group,
mice were irradiated through screens absorbing the UV-component. In the experimental group, screens transforming the UV-component
into the orange-red light were used. In the active control, changes in the swimming activity, as compared to the same parameter
before irradiation, were manifested much less than in animals of the experimental group. A morphological analysis showed changes
in the structure of all cardiomyocyte organelles studied: the relative area of mitochondria in the experimental mice increased
by more than 20% compared to intact animals (p < 0.05). A significant increase in the area of the sarcoplasmic reticulum, by 23.4% (p < 0.05), and in the volume of the myofibrillar apparatus, by 19.4% (p < 0.05), was detected. The results of our experiment show that the irradiation with using an additional orangered component
improves the physical endurance 1.5 times and initiates morphogenetic processes in cardiac muscle cells. 相似文献
2.
Riapis LA Filatov NN Salova NIa Sizykh EV Gerasimov AN Svetoch EA Stepanshin IuG Bannov VA Eruslanov BV Borzenkov VN Khramov MV Gusev VV 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》2005,(1):7-11
The characterization of E.coli strains O157:H7, isolated from humans and animals on some territories of the Central Federal District, is presented. Among the isolates from human outbreaks, related and, probably, related cultures prevailed, while among the isolates obtained from different animals mainly unrelated cultures have been detected. A conclusion has been made concerning the existence of several independent zoonotic reservoirs of E. coli O157:H7 infection on this territory. The advantages and drawbacks of the use of pulse electrophoresis in the characterization of E. coli O157:H7 are discussed. Grounds are given for the necessity of the patients examination with hemorrhagic enetrocolitis for the presence of E. coli O157:H7, as well as for the expediency of having a special item for the registration of this E. coli infection in relevant statistical forms. 相似文献
3.
V A Khramov 《Mikrobiologiia》1982,51(6):1002-1005
The activity of carbamate kinase (EC 2.5.2.2) was determined in bacteria using a simple modified procedure. Carbamoyl phosphate produced under the action of carbamate kinase carbamoylated ammonia in a reaction which was not enzyme-catalyzed yielding urea that was assayed by the colorimetric technique. The activity of carbamate kinase was found by this method in a number of microorganisms. The method can be used to study other enzymes synthesizing carbamoyl phosphate. The advantages of the method over other techniques are discussed. 相似文献
4.
5.
V V Galat L M Mezhevikina M N Zubin K A Lepikhov R N Khramov L M Cha?lakhian 《Biofizika》1999,44(1):137-140
The action of nonthermal electromagnetic radiation (EMR) of the millimeter range on the early development of murine and sea urchin embryos was investigated. An MRTA-01E-03 generator with a frequency of 54-78 GHz and radiation intensity of 0.06 mWt/cm2 was used. The embryos were irradiated during 30 min at the stage of two blastomeres. The number of murine embryos that reached the blastocyst stage increased (up to 97.3% in comparison with 87.5% in control). The total time of cultivation up to the blastocyst stage was also shorter (72 h) than in control (96 h). The irradiation had effect on the development of sea urchin embryos only if embryos with a weakened viability were tested. The results indicate that millimeter electromagnetic radiation has a stimulating effect on the early development of embryos, increasing the resistance of embryos to unfavorable environmental conditions. 相似文献
6.
A study of bacterial surface oligosaccharides were investigated among
different strains of Neisseria gonorrhoeae to correlate structural features
essential for binding to the MAb 2C7. This epitope is widely expressed and
conserved in gonococcal isolates, characteristics essential to an effective
candidate vaccine antigen. Sample lipooligosaccharides (LOS), was prepared
by a modification of the hot phenol-water method from which de-O-acetylated
LOS and oligosaccharide (OS) components were analyzed by ES-MS-CID-MS and
ES-MSnin a triple quadrupole and an ion trap mass spectrometer,
respectively. Previously documented natural heterogeneity was apparent from
both LOS and OS preparations which was admixed with fragments induced by
hydrazine and mild acid treatment. Natural heterogeneity was limited to
phosphorylation and antenni extensions to the alpha-chain. Mild acid
hydrolysis to release OS also hydrolyzed the beta(1-->6) glycosidic
linkage of lipid A. OS structures were determined by collisional and
resonance excitation combined with MS and multistep MSn which provided
sequence information from both neutral loss, and nonreducing terminal
fragments. A comparison of OS structures, with earlier knowledge of MAb
binding, enzyme treatment, and partial acid hydrolysis indicates a generic
overlapping domain for 2C7 binding. Reoccurring structural features include
a Hepalpha(1-->3)Hepbeta(1-->5)KDO trisaccharide core branched on the
nonreducing terminus (Hep-2) with an alpha(1-->2) linked GlcNAc
(gamma-chain), and an alpha-linked lactose (beta-chain) residue. From the
central heptose (Hep-1), a beta(1-->4) linked lactose (alpha-chain),
moiety is required although extensions to this residue appear unnecessary.
相似文献
7.
Domotenko LV Morozova TP Sapogova AV Eruslanov BV Khramov MV 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》2008,(2):62-66
Studies results about characteristics of growth medium for Legionella cultivation--legionelbacagar--are presented in article. It was shown that the medium has good growth characteristics and prolonged shelf life. Successful use of this medium for cultivation of Legionella pneumophila strains isolated during outbreak in Sverdlovsk region in 2007 was demonstrated. Feasibility of its use for isolation of Legionella from environment and clinical samples was discussed. 相似文献
8.
A. V. Khramov 《Paleontological Journal》2011,45(2):174-178
Two new lacewing species, Prohemerobius minor sp. nov. (Prohemerobiidae) and Sogjuta shartegica sp. nov. (Osmylidae), are described from Upper Jurassic deposits of the Mongolian locality Shar-Teg. 相似文献
9.
Entomological Review - The paper overviews the fossil record of insects with long mouthparts and rostra adapted to feeding on floral nectar and pollination drops of extinct gymnosperms. The... 相似文献
10.