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1

Influence of non-enzymatic antioxidants on antioxidation status in acute haemorrhagic necrotizing pancreatitis in rat

100%
Marciniak A., Lutnicki K., Szpringer E., Barham S.
Bulletin of the Veterinary Institute in Puławy
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2005
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tom 49
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nr 1
2
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Content available

Changes in the level of non-enzymatic antioxidants in leaves of Phaseolus coccineus (L.) plants under heavy metal stress

86%
Patrzylas P., Wojcik M., Skorzynska-Polit E.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2015
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tom 96
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nr 1
3
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The effects of cadmium on antioxidant capacities in leaves of Brassica oleracea L. var. acephala

72%
Demir E., Ozdener Y., Seckin Dinler B.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2013
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tom 94
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nr 2
4

Amoebicidal and amoebistatic effects of Artemisia argyi methanolic extracts on Acanthamoeba castellanii trophozoites and cysts

72%
Koloren O., Koloren Z., Sekeroglu Z. A., Colayvaz M., Karanis P.
Acta Parasitologica
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2019
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tom 64
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nr 1
5

Antioxidative changes in Citrus reticulata L. induced by drought stress and its effect on root colonization by arbuscular mycorrhizal fungi

72%
Sarkar J., Ray A., Chakraborty B., Chakraborty U.
European Journal of Biological Research
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2016
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tom 06
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nr 1
6

Non-enzymatic antioxidative defence mechanism in plasma of pigs during periparturient period: vitamin C and glutathione

72%
Szczubial M.
Bulletin of the Veterinary Institute in Puławy
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2010
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tom 54
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nr 3
The aim of the study was to determine plasma levels of vitamin C and reduced glutathione (GSH) in sows between the day 14 prepartum and day 14 postpartum. The study involved twenty-four sows of three breeds - Polish Large White (PLW), Polish Landrace (PL) and PLWxPL aged 1-3 years. All the animals were from one closed-cycle production farm. The mean vitamin C level on days 13-14 prepartum reached 0.49 ±0.19 mmol/g of protein and decreased significantly (P<05) at 24-48 h postpartum to 0.33 ±0.19 mmol/g of protein. On days 6-7 and 13-14 postpartum, the vitamin C level further decreased to 0.17 ±0.006 and 0.15 ±0.007 mmol/g of protein, respectively. The mean GSH level on days 13-14 before delivery was 0.071 ±0.009 mmol/g of protein and decreased significantly (P0.05) at 24-48 h before delivery to 0.062 ±0.018 mmol/g of protein. In this period, the mean GSH level was similar to that observed during the first 24-48 h postpartum. On day 6-7 after delivery, the level of GSH reached the values observed on days 13-14 and 6-7 prepartum. On days 13-14 postpartum, the level of GSH was found to be 0.115 ±0.029 mmol/g of protein and was significantly higher (P<0.001) compared to that on days 13-14 prepartum. The findings suggest that porcine levels of vitamin C and glutathione decrease during the periparturient period, which may lead to a decreased antioxidant defence system and an imbalance in redox homeostasis.
7
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Capillary zone electrophoresis for determination of reduced and oxidised ascorbate and glutathione in roots and leaf segments of Zea mays plants exposed to Cd and Cu

58%
Dresler S., Maksymiec W.
Acta Scientiarum Polonorum. Hortorum Cultus
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2013
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tom 12
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nr 6
The concentration of non-enzymatic antioxidants such as ascorbate and glutathione in tissues is one of the major plant responses to biotic and many abiotic stresses, including metals. Therefore, it is crucial to develop the most effective methods for simultaneous quantitative analysis of these antioxidants. Capillary zone electrophoresis allows relatively fast and effective analysis. The aim of the paper was to apply and optimise the capillary electrophoresis conditions for simultaneous determination of glutathione, glutathione disulphide, ascorbate, and dehydroascorbate in small plant tissue samples exposed to copper and cadmium. The method ensures good linearity and reproducibility, with correlation coefficients 0.988 for ascorbate and 0.999 for glutathione and glutathione disulphide, and with detection limits approximately 2.50, 0.65 and 0.50 ppm, respectively. Cu stress was found to increase the ascorbate concentration and glutathione content in leaves, while Cd increased glutathione in the oldest leaf segments and root.
8

Effects of dystocia on lipid peroxidation and enzymatic and non-enzymatic antioxidants in crossbred dairy cows

58%
Yildiz H., Simsek H., Saat N., Yuksel M.
Bulletin of the Veterinary Institute in Puławy
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2011
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tom 55
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nr 1
The aim of the study was to evaluate oxidative stress in cows undergoing normal parturition and cows suffering from dystocia. The erythrocytic glutathione peroxidase (GSH-Px) activity, plasma vitamin A and ß-carotene concentrations, and paraoxonase - PONI activity were lowered (P0.001, P<0.01, 0.05, and 0.05, respectively) in cows with dystocia compared to normal calving cows. The erythrocytic malondialdehyde (MDA) concentration was markedly increased in the dystocia group compared to normal calving group. However, erythrocytic glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD) activites, and plasma vitamin E and MDA concentrations were not significantly changed in the dystocia-affected cows in comparison to eutocia cows. In the difficult calving cows, there were significant correlations between the activities of GSH-Px and SOD (r=-0.4l, P<0.01), plasma ß-carotene levels and paraoxonase activity (r=0.34, P<0.05), body condition score (BCS) and plasma MDA (r=0.46, P<0.05). Similarly in the eutocia cows there were significant correlations between CAT activity and MDA concentration (r=-0.76, P<0.01), levels of plasma ß-carotene and PONI (r=0.58, P<0.01), BCS and MDA concentrations (r=0.50, P<0.05), and BCS and vitamin E (r=0.53, P<0.05) concentrations. These results suggests that evaluation of plasma vitamin A and ß-carotene concentrations, PONI and GSH-Px activities, and MDA concentration seems to be useful in the assessment of dystocia in cows.
9

Organophosphate insecticide chlorfenvinphos affects enzymatic and nonenzymatic antioxidants in erythrocytes and serum of rats

58%
Lukaszewicz-Hussain A., Moniuszko-Jakoniuk J.
Polish Journal of Environmental Studies
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2003
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tom 12
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nr 4
Chlorfenvinphos, 2-chloro-1-(2,4-dichlorofenyl)vinyl diethyl phosphate, is an organophos-phate insecticide widely used in Poland singly or in mixture. The present study was undertaken to determine chlorfenvinphos-induced lipid peroxidation and to show whether acute intoxication with chlorfenvinphos alters the antioxidant system in the erythrocytes and serum. The study was conducted on male Wistar rats divided into two groups. The animals of control group were given olive oil intragastrically by a stomach tube, the animals of experimental group received oil solution of chlorfenvinphos (CVP) at a dose of 0.02, 0.1 or 0.5LD50. The blood was collected via heart puncture at the 1st, 24th and 48th hour after treatment. We determined the erythrocytes concentration of glutathione, the activities of glutathione peroxidase, glutathione reductase and glucose-6-phosphate dehydrogenase as well as the serum concentration of ascorbic acid, á-to-copherol and malondialdehyde. We observed the stimulation of enzymatic and nonenzymatic antioxi-dant system and lipid peroxidation in the erythrocytes and serum of chlorfenvinphos intoxicated rats.
10

The antioxidative barrier in the organism

51%
Kulikowska-Karpinska E., Moniuszko-Jakoniuk J.
Polish Journal of Environmental Studies
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2004
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tom 13
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nr 1
Cell metabolism in organisms which use oxygen as a source of energy is closely associated with the generation and action of free oxygen radicals and their derivatives. Extra- and intracellular substances that are antioxidative in nature prevent overproduction of radicals and protect against propagation of peroxidative reactions. The list of compounds which can be treated as antioxidants becomes elongated. Many classifications of these compounds are used, of which the most common is the division according to their nature into enzymatic and non-enzymatic, according to their environment or the way they react with FOR. Enzymatic antioxidants include: superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase. Non-enzymatic antioxidants are: vitamin E, vitamin C, glutathione, carotenes and retinols, and some transition metals (Zn, Cu and Se). The balance between the actions of these two groups of compounds determines normal functioning of the organism. Impairment of the balance between pro- and antioxidative processes in the organism is called anitoxidative stress and may be induced by intensified reactions involving FOR and by depressed activity/concentration of antioxidants. It seems, however, that irrespective of the cause, oxidative stress is likely to result in many diseases.
11
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Content of enzymatic and nonenzymatic antioxidants in Salix viminalis L. grown on the Stebnyk tailing

44%
Fetsiukh A., Bunio L., Patsula O., Timmusk S., Terek O.
Acta Agrobotanica
|
2022
|
tom 75
|
nr 1
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