The role of oxidative stress in spring barley cross-adaptation to different heavy metals

2016 ◽  
Vol 63 (8) ◽  
pp. 1037-1048 ◽  
Author(s):  
Giedrė Kacienė ◽  
Romualdas Juknys ◽  
Irena Januškaitienė
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Spring Barley ◽  
Cross Adaptation

The impacts of heavy metals on oxidative stress and growth of spring barley

2012 ◽  
Vol 7 (2) ◽  
pp. 299-306 ◽  
Author(s):  
Romualdas Juknys ◽  
Giedrė Vitkauskaitė ◽  
Milda Račaitė ◽  
Jonė Venclovienė
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Lipid Peroxidation ◽  
Growth Inhibition ◽  
Spring Barley ◽  
Hordeum Vulgare L ◽  
Exponential Relationship ◽  
Pronounced Increase ◽  
Lead And Cadmium ◽  
Wide Range

AbstractOxidative stress is accepted to play a significant role in stress symptoms, caused by different stressors in a variety of organisms. In this study seedlings of spring barley (Hordeum vulgare L.) were exposed to a wide range of copper, zinc, chromium, nickel, lead and cadmium concentrations in order to determine the relationships between heavy metals-induced oxidative stress and plant growth inhibition. All investigated heavy metals induced an essential increase in lipid peroxidation and a reduction of dry biomass along with an increase in metal concentration in the nutrient solution. A very close and statistically significant exponential relationship between lipid peroxidation and growth inhibition was detected in this study. According to the results of analysis of variance (ANOVA), the intensity of nonspecific oxidative stress is identified as the main factor of barley growth inhibition, explaining 75% of total variance. Almost 10% of growth inhibition is attributed to the specific impact of heavy metals. The most pronounced increase of malondialdehyde content and growth inhibition was observed in Cu and Cd treatments, whereas the lowest changes in observed indicators were detected after exposure to Zn and Pb.

scholarly journals Role of oxidative stress on growth responses of spring barley exposed to different environmental stressors

2015 ◽  
pp. rtv026 ◽  
Author(s):  
Giedrė Kacienė ◽  
Jūratė Žaltauskaitė, Eglė Milčė ◽  
Romualdas Juknys
Keyword(s):  
Oxidative Stress ◽  
Spring Barley ◽  
Environmental Stressors ◽  
Growth Responses

Cross-adaptation of spring barley (Hordeum vulgare L.) to environmental stress induced by heavy metals

Ekologija ◽  
2010 ◽  
Vol 56 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Romualdas Juknys ◽  
Milda Račaitė ◽  
Giedrė Vitkauskaitė
Keyword(s):  
Heavy Metals ◽  
Hordeum Vulgare ◽  
Environmental Stress ◽  
Spring Barley ◽  
Cross Adaptation

scholarly journals Molecular Mechanism and Role of Translational Values of Heat Shock Protein (HSP27) in Various Disease

2020 ◽  
pp. 110-118
Author(s):  
Sameer Chaudhary ◽  
Sapana Sameer Chaudhary ◽  
Sakshi Rawat ◽  
Savneet Kaur ◽  
Bogireddy Devi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Scientific Data ◽  
Protein Homeostasis ◽  
Post Translational Modifications ◽  
Member Gene ◽  
And Oxidative Stress ◽  
Potential Cancer ◽  
Antioxidant Molecule

HSP27, also known as HSPB1, was first discovered with a molecular weight 27kDa belonging to the four member gene family. Elevated levels of HSP27 are seen when different unfavorable conditions prevail such as increase in temperature and oxidative stress or exposure to heavy metals or organic solvents. They possess ATP-independent chaperone like activity which helps in maintaining protein homeostasis. It can also form large oligomers (300-600 kDa) containing different numbers of subunits. It is composed of total 205 amino acids. HSP27 undergoes post-translational modifications i.e. phosphorylation thereby converting large oligomers into dimers. It can act as an anti-apoptotic and antioxidant molecule during oxidative stress.  The elevated form of HSP27 is also seen in some cancer belongs to breast, ovary, prostate, brain, colorectal, hepatocellular carcinoma, lung, liver, and cervical regions. Keeping in view of molecular roles of HSP27 signaling in various pathways, we have proposed their translational values in different diseases. In addition, we have also reported the existing scientific data on the HSP27 as the potential cancer biomarker and their therapeutic targets for improved prognosis and treatment in different diseases.

scholarly journals Antioxidant status in relation to heavy metals induced oxidative stress in patients with polycystic ovarian syndrome (PCOS)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Manal Abudawood ◽  
Hajera Tabassum ◽  
Atheer H. Alanazi ◽  
Fatmah Almusallam ◽  
Feda Aljaser ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Polycystic Ovary ◽  
Reproductive Age ◽  
Health Concern ◽  
Control Group ◽  
Polycystic Ovaries ◽  
Strong Negative Correlation ◽  
Pcos Group

AbstractPolycystic ovary syndrome (PCOS) is a global health concern for women of reproductive age, as 6.5% of women worldwide are affected by this syndrome. PCOS is marked by hyperandrogenism, anovulation, menstrual abnormalities, and polycystic ovaries. Metals such as arsenic, cadmium, lead and mercury are considered to be systemic toxicants/human carcinogens and seem to have devastating effects on humans, even at minimal exposures. One of the probable aetiological factors for PCOS has been identified as oxidative stress. In view of the probable associations among oxidative stress, metal toxicity and PCOS, the present study examined the role of heavy metals in the generation of oxidative stress among females. This prospective study included 106 women (56 women diagnosed with PCOS and 50 women who were not diagnosed with PCOS as control women). There were no significant differences in the sociodemographic characteristics between the two groups except for the irregularity of menses and the presence of acne. The serum As, Cd, Pb, and Hg levels increased and the serum glutathione (GSH) and superoxide dismutase (SOD) levels diminished significantly in the PCOS group compared to the control group at P < 0.001. The SOD levels were negatively correlated with the As and Pb levels at P < 0.05. Additionally, the PCOS group exhibited a strong negative correlation between the GSH and As levels (P < 0.01), GSH and Pb levels (P < 0.05) and GSH and Hg levels (P < 0.01). Furthermore, the As levels were positively correlated with increased levels of Cd, Pb and Hg among PCOS women. Significant positive correlations were observed between Pb and Cd and between Cd and Hg at P < 0.001. The outcome of the study provides clear insight into the role of metal-induced oxidative stress, which plays a vital role in the pathophysiology underlying PCOS and suggests the use of these markers as prognostic tools to reduce the consequences of high-risk exposure to these metals among females.

Protective role of citric acid against oxidative stress induced by heavy metals in Caenorhabditis elegans

2019 ◽  
Vol 26 (36) ◽  
pp. 36820-36831
Author(s):  
Shaojuan Song ◽  
Yan Han ◽  
Yun Zhang ◽  
Honglian Ma ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Caenorhabditis Elegans ◽  
Citric Acid ◽  
Protective Role

The role of antioxidants enzymes of E. coli ASU3, a tolerant strain to heavy metals toxicity, in combating oxidative stress of copper

2009 ◽  
Vol 26 (2) ◽  
pp. 241-247 ◽  
Author(s):  
Romany N. N. Abskharon ◽  
Sedky H. A. Hassan ◽  
Mohammad Humayun Kabir ◽  
Syed Abdul Qadir ◽  
Sanaa M. F. Gad El-Rab ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
E Coli ◽  
Tolerant Strain ◽  
Antioxidants Enzymes ◽  
Heavy Metals Toxicity

scholarly journals Accumulation of polyphenols and flavonoids in Atriplex canescens (Pursh) Nutt stressed by heavy metals (zinc, lead and cadmium)

2020 ◽  
Vol 16 (3) ◽  
pp. 334-337
Author(s):  
Khedim Ikram ◽  
Reguieg Yssaad Houcine Abdelhakim ◽  
Bülent Topcuoglu ◽  
Osmane Badiaa ◽  
Tadjouri Houria
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Secondary Metabolites ◽  
Dry Weight ◽  
The Other ◽  
Atriplex Canescens ◽  
Total Polyphenols ◽  
Lead And Cadmium ◽  
Cadmium Lead

Pollution of the environment and soils by heavy metals is one of the major problems of our time. Our study was to determine the effect of five doses for : zinc, lead and cadmium (0, 2500, 5000, 7500, and 10000 ppm) applied to the Atriplex canescens after 60 days for two weeks. The results showed an increase in the total polyphenols and flavonoids, depending on the increasing concentration of heavy metals at the leaf and root levels. The leaves have total polyphenols and flavonoids higher than those of the roots. The highest levels of total polyphenols and flavonoids in the leaves (3.47 mg EAG/ gdry weight of total polyphenols and 3.70 mg EQ/g dry weight of flavonoids) were obtained at a dose of 10000 ppm (cadmium, lead) respectively. On the other hand, the highest levels of total polyphenols and flavonoids in the roots were obtained at the metallic dose of 10000 ppm for cadmium (3.38 mg EAG/ gdry weight of total polyphenols and 0.61 mg EQ/g dry weight of flavonoids). These results also underlined the important role of secondary metabolites (total polyphenols and flavonoids) in the defense against oxidative stress caused by metallic stress.

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