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Trofimov I. A. Trofimova L. S. Yakovleva E. P. Oparina O. S. Oparin M. L. 《Biology Bulletin》2019,46(10):1442-1447
Biology Bulletin - V.V. Dokuchaev’s ideas are the foundation of modern ideas about rational nature-usage methods in our steppes in order to ensure productive longevity of agro-ecosystems and... 相似文献
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The steppe theriofauna of the Volga-Ural interfluve has been changing during the past century under the effect of both natural and anthropogenic factors. These changes have manifested themselves most clearly in the desert Caspian steppes and the dry steppes of the Transvolga Syrt Plain. A total of 66 mammal species are listed for this region. Some of them have disappeared while others have appeared anew, with their abundance ratio fluctuating significantly. Over the past 50 years, 15 new species have been recorded in the Transvolga fauna. One-third of them have come from the south and represent the desert faunal assemblage, while two-thirds are representatives of the forest assemblage that have come from the north. 相似文献
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M. L. Oparin I. A. Kondratenkov O. S. Oparina A. B. Mamayev E. I. Tikhomirova 《Biology Bulletin》2017,44(10):1289-1294
This paper examines the influence of the location of settlements, railroads, and highways on the spatial structure of the Otis tarda population in the Trans-Volga region that was studied in the years 1998–2016 in a model area of 12000 km2 that is located in the southern part of the Saratov Trans-Volga region. The zone of the impact made by our estimated disturbance factor due to the movement of people and a variety of ground vehicles along various-purpose roads on the territorial distribution of bustards in autumn can be denoted as a 300–500 m width band on both sides of the transport communications. Shelterbelts that were created along transport communications render a beneficial effect on the distribution of O. tarda and reduce the influence of the disturbance factor. Furthermore, crop rotation fields with side sizes of more than 1 km can be considered a factor that compensates for the anxiety of birds. We have found that in the Saratov Trans-Volga region, because of the large size of crop rotation fields and significant development of roadside and shelter belts, no special measures are required to protect O. tarda such as restrictions on the movement of people and vehicles over the territory where this species lives. 相似文献
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G. S. Krasnov N. Yu. Oparina S. L. Hankin T. D. Mashkova A. N. Ershov O. G. Zatsepina V. L. Karpov S. F. Beresten 《Molecular Biology》2009,43(2):321-328
Modern proteomic techniques make it possible to identify numerous changes in protein expression in tumors as compared to normal tissues. Although proteomics is currently widely used, identification of proteins differentially expressed in particular types of cancer remains a challenging task. The goal of our study was to detect novel protein markers of colorectal cancer using comparative proteomics of protein extracts obtained from primary tumors and adjacent normal tissues. Coloreetal cancer is nearly asymptomatic at the early stages, which calls for development of fast and sensitive methods for molecular diagnostics. Proteomes of 11 paired specimens of primary colorectal tumors and adjacent histologically normal tissues were studied using comparative 2D PAGE. Altogether, 16 proteins with altered expression levels were detected, including 13 proteins with increased levels and three proteins with decreased levels in tumor tissues. These proteins were identified using MALDI-TOF mass spectrometry. The proteins GPD1, RRBP1 (increased levels), HNRNPH1, and SERPINB6 (decreased levels) have been associated with colorectal cancer for the first time. 相似文献
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Anisimov VN Khavinson VKh Zavarzina NIu Zabezhinskiĭ MA Zimina OA Popovich IG Shtylik AV Arutiunian AV Oparina TI Prokopenko VM 《Rossi?skii fiziologicheski? zhurnal imeni I.M. Sechenova / Rossi?skaia akademiia nauk》2001,87(1):125-136
Female CBA mice were injected with s.c. synthetic tetrapeptide Epithalon from a 6-month age until death. The drug failed to affect the body weight or food consumption, physical activity or behavioural parameters. However, it slowed down the age-related switching off of the estrus function, decreased body temperature, decelerated free redical processes, prolonged the mice life span with an accompanying drop in spontaneous tumour incidence. 相似文献
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The review considers the structure, evolution, and possible mechanisms of spreading of intrachromosomal and interchromosomal segment duplications (SD), which account for more than 5% of the human genome. Most SD are mosaic and consist of multiple modules, which occur in several copies in different genome regions. SD are preferentially located in pericentric and subtelomeric regions, which are least studied on the human chromosomes. Homologous recombination between SD results in various chromosome rearrangements, contributing to the genome instability and the origin of several human hereditary disorders. 相似文献
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Kudryavtsev A. Yu. Oparin M. L. Oparina O. S. Mamaev A. B. Kovalev D. V. 《Biology Bulletin》2021,48(10):1897-1903
Biology Bulletin - Abstract—The results of our study of the ecosystem diversity and state of forest outliers located in the Shchuchanskii district of the Kurgan region are presented. The... 相似文献
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