Specific features of the functioning of osmoprotective and antioxidant systems of cereal seedlings under dehydration

2021 ◽  
Vol 2021 (3) ◽  
pp. 37-48
Author(s):  
S. M. Prykhod’ko ◽  
◽  
M. A. Shkliarevskyi ◽  
A. I. Kokorev ◽  
N. I. Ryabchun ◽  
...  
Keyword(s):  
Antioxidant Systems

Antioxidant status of blood in patients with vibration disease

2019 ◽  
pp. 978-982 ◽  
Author(s):  
N. N. Malyutina ◽  
A. F. Bolotova ◽  
R. B. Eremeev ◽  
A. Zh. Gilmanov ◽  
D. Yu. Sosnin
Keyword(s):  
Antioxidant Activity ◽  
Blood Serum ◽  
Antioxidant Status ◽  
Total Antioxidant Status ◽  
Main Group ◽  
Biologically Active ◽  
Antioxidant Systems ◽  
Control Group ◽  
Vibration Disease ◽  
Total Antioxidant

Introduction. The overwhelming number of publications contains only data on the content of individual antioxidants, but not on the overall antioxidant activity of the blood in patients with vibration disease.The aim of the study was to determine the total antioxidant activity of blood serum in patients with vibration disease.Materials and methods. Th e main group consisted of 30 people diagnosed with “Vibration disease” of 1 degree (n=21) and 2 degrees (n=9). Th e control group consisted of 30 clinically healthy men, comparable in age with the main group (p=0.66). Th e total activity of antioxidant systems of blood plasma was evaluated photometrically using the test system “Total antioxidant status-Novo” (“Vector-best”, Russia).Results. The indicator of the total antioxidant status (TAS) was 1,038±0.232 mmol/l in the examined main group, against 1,456±0.225 mmol/l in the examined control group (p<0.000001). Th e coefficient of variation (CV) in patients with vibration disease was 22.35%, 1.45 times higher than in the control group (15.45%). In the main group there was a positive correlation between age and TAS (R=0.525), in the control group there was no such relationship (R=0.095). Th e degree of decrease depended on the severity of vibration disease.Conclusions. 1. The development of vibration disease is accompanied by a decrease in the antioxidant status of blood serum. 2. Th e degree of decrease in the antioxidant status of blood serum correlates with the severity of vibration disease. 3. Reduction of TAS can serve as a pathogenetic justification of the need to include drugs and/or biologically active additives with antioxidant activity in therapy

Potassium and calcium improve salt tolerance of Thymus vulgaris by activating the antioxidant systems

2021 ◽  
Vol 277 ◽  
pp. 109812
Author(s):  
Ahlem Zrig ◽  
Hamada AbdElgawad ◽  
Taieb Touneckti ◽  
Hatem Ben Mohamed ◽  
Foued Hamouda ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Thymus Vulgaris ◽  
Antioxidant Systems

scholarly journals The effect of metabolism on the course of labor and the postpartum period in highly productive cows

2020 ◽  
Vol 17 ◽  
pp. 00256
Author(s):  
Murat Baimishev ◽  
Sergey Eremin ◽  
Kirill Plemyashov ◽  
Hamidulla Baimishev ◽  
Igor Konopeltsev ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Postpartum Period ◽  
Early Stage ◽  
Antioxidant Properties ◽  
Antioxidant Systems ◽  
Dry Period ◽  
Blood Samples ◽  
Start Up ◽  
Significant Difference ◽  
Duration Of Pregnancy

The purpose of the research is to determine the etiopathogenesis of reproductive dysfunction in highly productive cows. For this, one group of cows was formed on the principle of paranalogs in the amount of 37 animals inseminated in the first sexual hunt after calving, followed by taking blood samples from them using the Monovet system, considering the duration of pregnancy. During the start-up period, blood was taken 1–4 days before calving and on the first day after calving. A total of 253 blood samples were examined. Subsequently, depending on the effectiveness of insemination, animals were divided into two groups. The first group included inseminated cows after the first insemination (20 animals), the second group included 17 unfertilized cows after the first insemination. Subsequently, blood was taken from animals considering the course of childbirth and the postpartum period. Blood counts were studied according to generally accepted methods using certified equipment. The study found that at an early stage of pregnancy, cows have a significant difference in lipid metabolism and in their peroxidation, in the state of antioxidant systems compared to unstable animals. In the process of pregnancy development in cows, there is a decrease in the level of total lipids and their class, and the accumulation of products of transoxidation of lipids is reduced. In animals with retention of the placenta, a low lipid metabolism and a higher level of peroxidation were established already in the dry period. After calving, this difference increases. The obtained data can be used to develop an algorithm for the prevention of postpartum complications in cows by using substances with antioxidant properties.

scholarly journals Mitochondrial redox systems as central hubs in plant metabolism and signalling

2021 ◽  
Author(s):  
Olivier Van Aken
Keyword(s):  
Stress Responses ◽  
Plant Mitochondria ◽  
Nuclear Gene ◽  
Tca Cycle ◽  
Cellular Damage ◽  
Future Research ◽  
Antioxidant Systems ◽  
Plant Metabolism ◽  
Redox Systems ◽  
Glutathione Cycle

Abstract Plant mitochondria are indispensable for plant metabolism and are tightly integrated into cellular homeostasis. This review provides an update on the latest research concerning the organisation and operation of plant mitochondrial redox systems, and how they affect cellular metabolism and signalling, plant development and stress responses. New insights into the organisation and operation of mitochondrial energy systems such as the tricarboxylic acid (TCA) cycle and mitochondrial electron chain (mtETC) are discussed. The mtETC produces reactive oxygen and nitrogen species, which can act as signals or lead to cellular damage, and are thus efficiently removed by mitochondrial antioxidant systems, including Mn-superoxide dismutase, ascorbate-glutathione cycle and thioredoxin-dependent peroxidases. Plant mitochondria are tightly connected with photosynthesis, photorespiration and cytosolic metabolism, thereby providing redox-balancing. Mitochondrial proteins are targets of extensive post-translational modifications, but their functional significance and how they are added or removed remains unclear. To operate in sync with the whole cell, mitochondria can communicate their functional status via mitochondrial retrograde signalling to change nuclear gene expression, and several recent breakthroughs here are discussed. At a whole organism level, plant mitochondria thus play crucial roles from the first minutes after seed imbibition, supporting meristem activity, growth and fertility, until senescence of darkened and aged tissue. Finally, plant mitochondria are tightly integrated with cellular and organismal responses to environmental challenges such as drought, salinity, heat and submergence, but also threats posed by pathogens. Both the major recent advances and outstanding questions are reviewed, which may help future research efforts on plant mitochondria.

Effects on photosynthetic and antioxidant systems of harmful cyanobacteria by nanocrystalline Zn-MOF-FA

2021 ◽  
pp. 148247
Author(s):  
Xiaoxiong Wang ◽  
Kaiwen Huang ◽  
Jingsi Gao ◽  
Yim Tong Szeto ◽  
Chengchun Jiang ◽  
...  
Keyword(s):  
Antioxidant Systems ◽  
Harmful Cyanobacteria
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