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Experiments were conducted on rabbits under conditions of acute restriction of coronary blood flow (intravenous injection of vasopressin in a dose of 0.5 U/kg) and preliminary administration (1 h before vasopressin) of PP-256-Na antioxidant preparation. The activity of creatine kinase isoenzymes bound with sarcoplasmic reticulum and mitochondria membranes were studied as well as the content of diene conjugates in these membranes and accumulation of malonic dialdehyde. It is shown that an essential decrease in the enzyme activity in the membranes occurs against a background of a considerable increase in the content of diene conjugates and accumulation of malonic dialdehyde. A preliminary administration of the antioxidant produces a pronounced protective effect on the enzyme activity. 相似文献
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Voronkov A. S. Ivanova T. V. Kuznetsova E. I. Kumachova T. Kh. 《Russian Journal of Plant Physiology》2019,66(6):922-931
Russian Journal of Plant Physiology - Cytophysiological adaptive features of apple fruits (Malus domestica Borkh.) were examined as a function of growth altitude—300, 500, 700, and 1200 m... 相似文献
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L. V. Kovaleva G. V. Timofeeva E. V. Zakharova A. S. Voronkov V. Yu. Rakitin 《Russian Journal of Plant Physiology》2011,58(3):402-408
In the pollen-pistil system of petunia (Petunia hybrida L.) self-compatible and self-incompatible clones within 7 h after self-pollination, we determined the content of ACC (1-aminocyclopropane-1-carboxylic
acid), the activity of two enzymes (ACC synthase and ACC oxidase), and the rate of ethylene production. Depending on the type
of pollination, germination of pollen on the stigma surface and the pollen tube growth in the tissues of style were accompanied
by different levels of ACC and ethylene release. The pollen-pistil system of the self-compatible clone contained twice more
ACC than in the self-incompatible clone, whereas the pollen-pistil system in the self-incompatible clone produced 4–5 times
more ethylene than in the self-compatible clone. For both types of pollination, ACC and ethylene were predominantly produced
in the stigma tissues. The rate of ethylene production therein was 50 times greater than in the styles and ovaries, and the
content of ACC was 100 times higher than in the styles and ovaries. Germination of male gametophyte after both types of pollination
was accompanied by elevated ACC synthase activity (especially in the case of compatible pollination), whereas notable increase
in ACC oxidase activity was manifested in growing pollen tubes after self-incompatible pollination 相似文献
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Kurbatova OL Pobedonostseva EIu Prokhorovskaia VD Kholod ON Evsiukov AN Bogomolov VV Voronkov IuI Filatova LM Larina ON Sidorenko LA Morgun VV Kasparanskiĭ RR Altukhov IuP 《Genetika》2006,42(10):1415-1425
Genetic demographic characteristics and immunogenetic markers (blood groups ABO, Rhesus, MNSs, P, Duffy, Kidd, and Kell) have been studied in a group of 132 Russian cosmonauts and test subjects (CTSG). Analysis of pedigrees has shown a high exogamy in the preceding generations: almost half of the subjects have mixed ethnic background. According to the results of genetic demographic analysis, a sample from the Moscow population was used as control group (CG). Comparison between the CTSG and CG has demonstrated significant differences in genotype frequencies for several blood group systems. The CTSG is characterized by a decreased proportion of rare interlocus genotypic combinations and an increased man heterozygosity. Analysis of the distributions of individual heterozygosity for loci with codominant expression of alleles has shown that highly heterozygous loci are more frequent in the CTSG. Taking into account that the CTSG has been thoroughly selected from the general population, it is concluded that heterozygosity is related to successful adaptation to a space flight. 相似文献
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Steven P. Braithwaite Michael Voronkov Jeffry B. Stock M. Maral Mouradian 《Neurochemistry international》2012
Phosphorylation is a key post-translational modification for cellular signaling, and abnormalities in this process are observed in several neurodegenerative disorders. Among these disorders, Parkinson’s disease (PD) is particularly intriguing as there are both genetic causes of disease that involve phosphorylation, and pathological hallmarks of disease composed of a hyperphosphorylated protein. Two of the major genes linked to PD are themselves kinases – leucine rich repeat kinase 2 (LRRK2) and phosphatase and tensin induced homolog kinase 1 (PINK1). Mutations in LRRK2 lead to its increased kinase activity and dominantly inherited PD, while mutations in PINK1 lead to loss of function and recessive PD. A third genetic linkage to disease is α-synuclein, a protein that is heavily phosphorylated in Lewy bodies and Lewy neurites, the pathological hallmarks of PD. The phosphorylation of α-synuclein at various residues influences its aggregation, either positively or negatively, thereby impacting its central role in disease pathogenesis. Given these associations of phosphorylation with PD, modulation of this modification is an attractive therapeutic strategy. The kinases that act in these disease relevant pathways have been the primary target for such approaches. But, the development of kinase inhibitors has been complicated by the necessary specificity to retain safety, the redundancy of kinases leading to lack of efficacy, and the difficulties in overcoming the blood–brain barrier. The field of modulating phosphatases has the potential to overcome some of these issues and provide the next generation of therapeutic targets for PD. In this review, we address the phosphorylation pathways involved in PD, the kinases and issues related to their inhibition, and the evolving field of the phosphatases relevant in PD and how they may be targeted pharmacologically. 相似文献
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A. M. Shigarova N. E. Korotaeva G. B. Borovskii M. G. Voronkov 《Russian Journal of Plant Physiology》2012,59(6):724-731
A capability of triethanolamine (TEA) and its organosilicon derivatives methyl-, chloromethyl-, and ethoxy silatrane (MS, CMS, and ES, respectively) in low and ultra-low concentrations (from 10?3 to 10?13 M) to increase pea (Pisum sativum L.) thermotolerance and the relation of this process with heat-shock protein (HSP) accumulation in the roots were studied. Low and ultra-low concentrations of CMS and MS improved seedling survival under conditions of the heat shock (45°C). This process was not accompanied by stress protein accumulation. ES and CMS affected seedling survival and HSP accumulation differently in dependence on the temperature and preparation concentration. 相似文献
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