Tag Archives: lipid peroxidation

Phenylalanine ammonia-lyase activity and content of flavonoid compounds in wheat seedlings at the action of hypothermia and hydrogen sulfide donor

Yu. E. Kolupaev1,2, E. I. Horielova1, T. O. Yastreb1, Yu. V. Popov3, N. I. Ryabchun3

1Dokuchaev Kharkiv National Agrarian University, Ukraine;
e-mail: plant_biology@ukr.net;
2Karazin Kharkiv National University, Ukraine;
3Yuryev Рlant Production Institute, National Academy of Agrarian Sciences of Ukraine, Kharkiv

At present hydrogen sulfide (H2S) is considered as one of the signal mediators in plant cells. However, its role in formation of plant resistance to low temperatures and, in particular, in regulation of secondary metabolism under stress conditions remains poorly understood. The influence of H2S donor sodium hydrosulfide (NaHS) on phenylalanine ammonia-lyase (PAL) activity and content of flavonoids in wheat seedlings at normal temperature (21 °C) and under cold hardening conditions (7 days at 3 °C) was studied. After 2 days of the hardening temperature, a transient increase in PAL activity was noted. Also, activity of the enzyme was increased by treatment of plants with 0.1 or 0.5 mM NaHS under normal temperature conditions and especially at the background of cold hardening. By themselves, the cold hardening and the action of H2S donor caused an increase in total content of flavonoids and amount of anthocyanins. With the combination of hypothermia and treatment of seedlings with NaHS, this effect enlarged and the total content of flavonoids increased by 3.8, and anthocyanins increased by 1.8 times in comparison to the control. Treatment with the H2S donor caused a decrease in content of the lipid peroxidation product malonic dialdehyde in seedlings after the action of hardening temperature, and especially after their freezing at –5 °C. Also, under the influence of NaHS, survival of hardened and unhardened seedlings after cryostress increased. It was concluded that one of the mechanisms of the positive influence of the H2S donor on resistance of wheat seedlings to hypothermia is the PAL-dependent accumulation of flavonoid compounds, which have a high antioxidant activity, and a decrease in effects of secondary oxidative stress.

Effect of sodium nitroprusside and S-nitrosoglutathione on pigment content and antioxidant system of tocopherol-deficient plants of Arabidopsis thaliana

N. M. Semchuk, Yu. V. Vasylyk, O. I. Kubrak, V. I. Lushchak

Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine;
e-mail: lushchak@pu.if.ua

Sodium nitroprusside (SNP) and S-nitrosoglutathione (GSNO) were used as a source of exogenous nitric oxide (NO) to investigate their effects on biochemical parameters and antioxidant enzyme response in leaves of wild type Columbia and tocopherol-deficient vte4 and vte1 mutant lines of Arabidopsis thaliana plants and possible tocopherol involvement in regulation of antioxidant response under NO-induced stress. SNP enhanced the activity of the enzymes, that scavenge hydrogen peroxide in leaves of all studied lines, and increased glutathione reductase and glutathione-S-transferase activity there. In addition, it decreased the intensity of lipid peroxidation in vte1 mutant line leaves. At the same time, GSNO increased the levels of protein carbonyls and inactivated enzymes ascorbate peroxidase, guaiacol peroxidase and dehydroascorbate reductase in almost all investigated plant lines. In contrast to wild type, GSNO increased superoxide dismutase activity and decreased catalase activity and chlorophyll a/b ratio in the leaves of two mutant lines. It can be assumed that tocopherols in some way are responsible for plant protection against NO-induced stress. However the mechanisms of this protection remain unknown.

Tissue specificity of antioxidant system functioning and lipid peroxidation in different age groups of amur carp

S. I. Kras, S. I. Tarasjuk

Institute of Fisheries, National Academy of Agrarian Sciences of Ukraine, Kyiv;
e-mail: s_kras@inbox.ru, tarasjuk@ukr.net

Key features of tissue enzymes functioning in antioxidant system (AOS) in sexually mature and immature individuals of Amur carp were studied. The activity of antioxidant enzymes was highest in the myocardium and subjected to age-related changes. It was concluded that changes in the functioning of AOS and intensity of lipid peroxidation processes are characterized by organ-tissue metabolic features and age peculiarities of metabolism that is most expressed in the myocardium.

Changes in oxidative stress intensity in blood of tumor-bearing rats following different modes of administration of rhenium-platinum system

K. L. Shamelashvili1, N. I. Shtemenko2, І. V. Leus3, S. O. Babiy4, O. V. Shtemenko5

 1SE “Dnipropetrovsk Medical Academy” of Health Ministry of Ukraine;
2Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;
3University of Oklahoma, Oklahoma-city, USA;
4Institute of Gastroenterology, National Academy of Medical Sciences
of Ukraine, Dnipropetrovsk;
5Ukrainian State University of Chemical Technology, Dnipropetrovsk;
e-mail: shamelashvili@rambler.ru

Effects of the different modes of administration of dichlorotetra-μ-isobutyratodirhenium(ІІІ) – І – (in water solution, liposomes, nanoliposomes and together with cisplatin – in the rhenium-platinum system) on the intensity of lipid peroxidation (LP) in blood plasma and the activity of the erythrocyte antioxidant enzymes were investigated on the model of tumor growth. A decrease in the concentration of TBA-active substances caused by dirhenium compounds was shown to be independent of the administration mode and the extent of the tumor growth inhibition. I was four-times more effective in inhibition of the LP burst than any known antioxidant. I induced the increasing activity of erythrocyte superoxide dismutase and decreasing activity of catalase. In vitro experiments with native superoxide dismutase, the interaction of І with following activation of the active center of the enzyme was confirmed and the superoxide dismutase activity of І was shown, that may contribute to the enhancement of the enzyme activity in vivo. The cluster rhenium compounds may be promising nontoxic potent antioxidants capable of deactivating superoxide radicals.

Loach embryos prooxidant-antioxidant status under the influence of amide derivatives of 1,4-naphthoquinone

A. O. Bezkorovaynyj1,2, A. R. Zyn2, N. M. Harasym1, J. T. Len2,3, O. M. Figurka3, D. I. Sanagursky1

1Ivan Franko National University of Lviv, Ukraine;
2Lviv Expert Center of Scientific Researches Ministry of Internal Affairs of Ukraine;
3National University “Lviv Polytechnicа”, Ukraine;
e-mail: andriy.bezkorovajnyj@gmail.com

The mechanisms of disorders in cell functions induced by 1,4-naphthoquinone amide derivatives are not clarified yet. The article is dedicated to the study of features of these substances influence on loach Misgurnus fossilis L. embryos pro/antioxidant homeostasis during early embryogenesis. The aim of this work was to study the effect of 2-chloro-3-hydroxy-1,4-naphthoquinone, 2-chloro-3-(3-oxo-3-(piperidine-1-yl)propylamine)-1,4-naphthoquinone (FO-1), 2-chloro-3-(3-(morpholine-4-yl)-3-oxopropylamine)-1,4-naphthoquinone (FO-2 at concentrations of 10-3, 10-5, 10-7 M on the content of TBA-reactive substances (a byproduct of lipid peroxidation) and the activities of superoxide dismutase and catalase in loach embryos. It was established that 1,4-naphthoquinone amide derivatives and 2-chloro-3-hydroxy-1,4-naphthoquinone decreased the content of lipid peroxidation products in embryo cells in a dose-dependent manner. The investigated compounds cause an increase in superoxide dismutase and catalase activities compared with the control value. The results of the two-factor ANOVA test indicate that 2-chloro-3-hydroxy-1,4-naphthoquinone and 1,4-naphthoquinone amide derivatives (FO-1, FO-2) have predominant influence on the TBA-reactive substances content and superoxide dismutase activity. However, the time of loach embryos development has a more pronounced effect on catalase activity than the studied 1,4-naphthoquinone derivatives.

Tissue specificity of lipid peroxidation under emotional stress in rats

K. O. Menabde, G. M. Burjanadze, M. V.  Сhachua,
Z. T. Kuchukashvili, N. I. Koshoridze

Iv. Javakhishvili Tbilisi State University, Georgia;
e-mail: ketimenabde@yahoo.com

The intensity of lipid peroxidation and activi­ty of antioxidant system enzymes in the blood plasma, brain and cardial muscle of laboratory rats under 40 days of isolation and violation of diurnal cycle was studied. The obtained data show that on the background of concentration changes in NO changes also take place in the intensity of lipid peroxidation process, indicated by changes in the concentration of TBA-active products and diene conjugates.
The changes taking place in the activity of superoxidedismutase, catalase, succinatdehydrogenase, creatine kinase and aldolase under stress were studied.
The resulting data show that isolation of animals and violation of diurnal cycle are the factors causing a significant reduction in the energy metabolism in the brain and heart tissue cells and resulting in oxidative stress that, in its turn, may become the reason for development of toxic radicals.
Furthermore, prolonged stress may result in irreversible processes that are considered to be the reasons for significant pathologies of the cardiovascular system.

Peculiarities of antioxidant defense system organization of the black sea mollusks Mytilus galloprovincialis Lam. and Anadara inaequivalvis Br.

O. L. Gostyukhina, I. V. Golovina

O. O. Kovalevsky Institute of Biology of the Southern Seas,
National Academy of Sciences of Ukraine, Sevastopol;
e-mail: gostolga@yandex.ru

Antioxidant (AO) system and lipid peroxidation (LP) in tissues of two species of the Black Sea bivalve mollusks Mytilus galloprovincialis and Anadara inaequivalvis were investigated. The activity of superoxide dismutase (SOD, 1.15.1.1), catalase (1.11.1.6), glutathione peroxidase (GP, 1.11.1.9), glutathione reductase (GR, 1.6.4.2), concentrations of reduced glutathione (GSH) and TBA-reactive products were determined in the foot, hepatopancreas and gills of mature mollusks. The characteris­tics of AO complex and LP products­ connected with tissue and species specificity of mollusks were found. Hepatopancreas of mussels has been found to have higher values of all characteristics investigated, except GP. The gills and the foot of anadara have been found to be involved in AO defense along with hepatopancreas: maximum activity of GR, catalase and SOD was found in the gills and the highest activity of GP and maximum level of GSH was observed in the foot. Anadara has been shown to have higher antioxidant potential and lower level of oxidative stress because the LP intensity in all tissues examined of the hemoglobin-containing mollusk was twice lower in comparison with the mussel.

Seasonal dynamics of products of lipid peroxidation in liver of bank vole (Myodes glareolus) under conditions of environmental pollution by heavy metals

S. V. Zadyra, D. V. Lukashov

Taras Shevchenko Kyiv National University,
Educational and Scientific Centre “Institute of Biology”, Ukraine;
e-mail: luminary_SV@ukr.net

The presented research involves the integral assessment of biochemistry indexes of natural populations of voles under conditions of environmental pollution by heavy metals. The raised content of mobile forms of Pb, Cd, Cr, Ni and Co in soils was revealed for a distance of 500 m to the south-west of Tripillya Thermal Power Plant (TPP) (Kyiv region, Ukraine). It considerably (up to 3-5 times) exceeds the levels in the territory of Kaniv Nature Reserve (Cherkassy region, Ukraine). The territory of National Nature Park “Holosiivsky” (Kyiv, Ukraine) is characterized by rather increased content of active form of investigated heavy metals, especially Pb. The increase of the concentration of diene conjugates (up to 7-10 times) and thiobarbituric acid (TBA) active compounds (up to 2-3 times) in the liver of bank vole (Myodes glareolus) polluted by heavy metals has been found. The insignificant increase of the content of Schiff bases in liver homogenate of voles in the region of impact of the Tripillya TPP (2 times in spring and summer, 3 times – in autumn) was detected. Seasonal dynamics of the maintenance of lipid peroxidation products has been revealed. The registered changes of biochemical indicators evidence for availability of biochemical stress in the bank vole organism in the region of influence of the Tripillya TPP.

Alterations of prooxidant-antioxidant system of rat liver at ethanol and tetracycline action

Kh. Yu. Nedoshytko

I. Ya. Horbachevsky Ternopil State Medical University, Ukraine;
e-mail: khrystynan@ukr.net

The state of antioxidant system and fatty acid composition of lipids in the liver tissues of rats of different sex at the ethanol and tetracycline action and at the influence of biologically active additives (BAA) “Alpha + Omega” at a dose of 0.5 mg/kg b.w. per os was investigated. It was found that the contet of lipid peroxidation products in the liver was increased at the action of 40 % ethanol at a dose of 7 ml/kg b.w. per os and tetracycline – 500 mg/kg and more profound at their joint using. Howe­ver, the content of diene conjugates was stronger increased in the liver of females at the action of ethanol, while in the liver of males at the action of tetracycline (Р < 0.05). It was shown that the application of the investigated compounds led to the reduction of an antioxidant defense system activity of males and females liver, as evidenced by the decrease of superoxide dismutase activity by 46 and 43% and reduction of glutathione content by 39 and 38% (Р < 0.05). The activity of alanineaminotransferase, aspartateaminotransferase and alkalinephosphatase was increased in the liver of males and females under the influence of ethanol and tetracycline and more profound at their joint usa­ge (Р < 0.05). It was established that ethanol and tetracycline unidirectionally changed fatty acid composition of total lipids of rat liver, but at the ethanol action the changes were more expressed in females while at the tetracycline action in males. The application during 14 days of BAA “Alpha + Omega” to male and female rats with an acute tetracycline damage at subacute ethanol action led to partial normalization of prooxidant-antioxidant system and the relative content of total lipids fatty acids of the liver of both sexes animals.

Oxidative stress in blood leukocytes, pro/antioxidanт status and fatty acids composition of pancreas lipids at experimental acute pancreatitis in rats

I. B. Pryvrotska1, T. M. Kuchmerovska2

1I. Нorbachevsky Ternopyl State Medical University, Ukraine;
2Palladin Institute of Biochemistry, National Academy of Science of Ukraine, Kyiv;
e-mail: irina.privrotska@yandex.uа

In an experimental model of acute pancreatitis (АP) in rats no alteration in leukocyte’s viability was found by flow cytometry as compared to control. After 1 day of AP production of reactive oxygen forms in granulocytes was increased more than 5 times, but after 3 days their level was decreased. Alterations of pro/antioxidant status and specific changes in the fatty acid composition in the pancreas were established. With the development of AP, the processes of lipids peroxidation were intensified while antioxidant system was altered, that was evidenced by inflammation in the pancreas. In these conditions, the increase of phospholipase A2 activity was accompanied by significant changes of fatty acid composition of the total lipids in the pancreas. This increased relative total content of saturated fatty acids, in particular myristic, palmitic and stearic acid increased, while the total content of polyunsaturated essential fatty acids ω-3 (linolenic, eicosapentaenoic, dokozapentayenoic, docosahexaenoic) decreased. The preparation containing ω-3 polyunsaturated fatty acids partially normalized the lipid and fatty acids composition as well as prooxidant-antioxidant system.