scholarly journals Effect of high temperature treatment of Vicia faba roots on the oxidative stress enzymes in leaves.

1997 ◽  
Vol 44 (2) ◽  
pp. 315-321 ◽  
Author(s):  
M Filek ◽  
R Baczek ◽  
E Niewiadomska ◽  
M Pilipowicz ◽  
J Kościelniak
Keyword(s):  
Oxidative Stress ◽  
Vicia Faba ◽  
Temperature Treatment ◽  
Activity Analysis ◽  
High Temperature Treatment ◽  
Sod Activity ◽  
Heat Treated ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
Cell Fractions

The following types of superoxide dismutase (SOD) have been found in the leaves of Vicia faba: one isoenzyme of Mn-SOD and four isoenzymes of Cu/Zn-SOD. The treatments of roots with boiling water caused an increase of SOD activity in the leaves. The highest increase was measured after 5 s of the treatment. It was accompanied by a significant increase in catalase activity. Analysis of cell fractions' revealed an increase of SOD activity in the plastids and mitochondria isolated from the leaves of those plants whose roots were heat-treated. However, there was no distinct change of SOD activity in the cytosolic fraction. The possibility of an electric wave intervention inducing oxidative stress in the leaves is discussed.

The Dinitrophenol and Potassium Iodate Influence on Hordeum Vulgare Seedlings Viability\

2018 ◽  
Vol 69 (8) ◽  
pp. 2160-2166
Author(s):  
Elena Todirascu Ciornea ◽  
Gabriela Dumitru ◽  
Ion Sandu
Keyword(s):  
Oxidative Stress ◽  
Hordeum Vulgare ◽  
Antioxidant Enzyme ◽  
Oxygen Radicals ◽  
Free Oxygen Radicals ◽  
Potassium Iodate ◽  
Free Oxygen ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
Seeds Germination

The using of the pesticides of dinitrophenol type in agriculture has as consequence the major pollution of the environment, the plants taking these substances from the soil and once with these ones they reach in the human and animal organism where they product disequilibrium that are interpreted through the accumulation of free oxygen radicals with direct repercussions on the antioxidant enzyme�s synthesis intensification and on their activity�s increase. The apply of treatments on the barley seeds had significant effects regarding the seeds� germination, the young plants� growth, the oxidative stress enzymes� activity, but also regarding the content of photoassimilators and carotenoids pigments.

Effects of conjugated linoleic acid and curcumin on growth performance and oxidative stress enzymes in juvenile Pacific white shrimp ( Litopenaeus vannamei ) feed with aflatoxins

2019 ◽  
Vol 51 (3) ◽  
pp. 1051-1060
Author(s):  
Oscar Daniel García‐Pérez ◽  
Mireya Tapia‐Salazar ◽  
Martha G. Nieto‐López ◽  
Julio César Cruz‐Valdez ◽  
Maribel Maldonado-Muñiz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Linoleic Acid ◽  
Growth Performance ◽  
Conjugated Linoleic Acid ◽  
Litopenaeus Vannamei ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
And Oxidative Stress

Immunohistochemical detection of anti-oxidative stress enzymes in the dog brain

1997 ◽  
Vol 17 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Wijit Kiatipattanasakul ◽  
Shin-ichiro Nakamura ◽  
Koji Kuroki ◽  
Hiroyuki Nakayama ◽  
Kunio Doi
Keyword(s):  
Oxidative Stress ◽  
Immunohistochemical Detection ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
Dog Brain

scholarly journals Effect of Probiotic Supplementation on Oxidative Stress Enzymes and Mental Health of Athletes

2019 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Mahtab Noorifard ◽  
Arasb Dabbagh Moghaddam ◽  
Zatollah Asemi ◽  
Ramin Hamidi Farahani ◽  
Seyed Milad Mousavi Jazayeri ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Mental Health ◽  
Probiotic Supplementation ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes

scholarly journals Potential Role of Red Palm Oil Supplemented Diet on Oxidative Stress Enzymes in Plasmodium Berghei Induced Malaria

2021 ◽  
Author(s):  
Temitope Daniel Adeleke ◽  
Olawale Abiodun Adejumobi ◽  
Franklin Folasele Akinola ◽  
Oluwatosin Abidemi Salau ◽  
Oyeronke Suebat Uthman-Izobo
Keyword(s):  
Oxidative Stress ◽  
Dietary Intake ◽  
Palm Oil ◽  
Plasmodium Berghei ◽  
Malaria Parasite ◽  
Red Palm Oil ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
Group A ◽  
Group B

AbstractBackgroundMalaria parasites are very vulnerable to oxidative stress during the part of their life cycle when they inhabit the erythrocytes. Studies have shown that dietary intake of antioxidant plays a role in stabilizing oxidative stress.MethodsThe objective of this research work was to examine the antioxidative effect of red palm oil on Plasmodium berghei malaria induced oxidative stress. Sixty (60) mice were distributed into five groups. Group A served as the negative control (healthy mice with normal feed); group B as positive control (healthy mice fed with red palm oil without malaria parasite.while the other groups (C to E) served as the test groups. Group C served as group of healthy mice fed with red palm oil (pelletized), infected with malaria parasite without antimalaria drug. Group D served as group of healthy mice fed with red palm oil (pelletized), infected with malaria parasite and treated with amodiaquine. Group E served as group of healthy mice fed with normal feed, infected with malaria parasite and treated with amodiaquine. The parasitemia levels were estimated on days 1,4 and 5. The activity of oxidative stress enzymes biomarkers were determined spectrophotometrically.ResultGroup A showed a statistically significant increase in the activity of SOD (1.90 ± 0.16 units/mg protein), GST (1.68 ± 0.086 units/L) compared to group C, SOD (3.54 ± 0.83 units/mg protein), GST (2.12 ± 0.20 units/L). Group B showed a statistical significant decrease in the activities of SOD (3.22 ± 0.33 units/mg protein), Catalase (49.11 ± 2.35 µmol/min), GSH-R (31.50 ± 2.48 units/L) compared to group E, SOD (2.18 ± 0.39 units/mg protein), Catalase (44.07 ± 3.88 µmol/min), GSH-R (27.75 ± 1.64 units/L).ConclusionThe dietary intake of red palm oil helps to reduce free radical mediated injury to the tissue thus preventing oxidative stress induced by malaria or any other factors.

Quality Improvement of CNT by Thermal Treatment and Enhancement of Properties of CNT/Polymer Composites

2018 ◽  
Vol 772 ◽  
pp. 23-27
Author(s):  
Takashi Amemiya ◽  
Toshiyuki Yasuhara
Keyword(s):  
Polymer Composites ◽  
Mechanical Characteristics ◽  
Polymer Matrix Composites ◽  
Lower Surface ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Matrix Composites ◽  
High Quality ◽  
Heat Treated ◽  
Double Wall

Since CNTs (carbon nanotubes) have excellent electrical and mechanical characteristics, their application as fillers for polymer matrix composites is expected to have great potential. The purpose of this study is to clarify the effect of CNT’s crystallinity quality, which is given by high temperature treatment (i.e. annealing), on the properties of CNT/polymer composites. In this study, double wall type CNT (DWNT) and multi wall type CNT (MWNT) were used and heat treated at up to 2000°C to achieve highly improved crystallinity. Electrical and mechanical properties of the CNT/polymer composites were compared with the various CNT’s crystallinity qualities as measured by ID/IG ratios. As a result, although the composites with higher quality CNTs showed considerably lower surface resistivities, however the same composites had lower Young's modulus and tensile strengths. The reason is thought to be that the high quality CNT has low surface activity and weak adhesion between the polymer and the CNT surface. This suggests that CNTs with higher quality do not always contribute to the improvement to the properties of CNT/polymer composites.

scholarly journals Prepregs for Temperature Resistant Composites

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4012 ◽  
Author(s):  
Eliška Haincová ◽  
Pavlína Hájková ◽  
Jan Kohout
Keyword(s):  
Tensile Properties ◽  
Preparation Method ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Matrix Composites ◽  
Heat Treated ◽  
Fabric Composites ◽  
Original Strength ◽  
Alkali Activated ◽  
Inorganic Matrix

In this paper, carbon fabric reinforced inorganic matrix composites were prepared. The inorganic matrix based on alkali activated aluminosilicate was used because of its resistance to fire and the temperatures up to 1000 °C. Influence of heat treatment of fabric, high temperature treatment of composite and preparation method on the mechanical properties and morphology of the composites were studied. The preparation of composites with the subsequent steps of impregnation, layering and curing of the composites was compared with the prepreg preparation method, which separates the impregnation of the reinforcement from the production of the composite. The SEM photographs show no differences in morphology between composites prepared from heat treated fabric and composites prepared from original fabrics. All four series of samples were comparatively saturated with matrix. Despite this, tensile properties of heat-treated fabric composites were negatively affected. While composites with heat-treated fabric reached the tensile strength up to 274 MPa, composites prepared without heat-treated fabric exhibited strengths higher than 336 MPa. Samples exposed to temperatures reaching 600 °C retained up to 40% of their original strength. The effect of composite preparation method on the tensile properties of the composites has not been proved.

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