oxidative stress in quarry workers pdf
(PDF) Occupational health hazards of stone quarry workers …
MMR results suggested that quarry workers revealed significantly (p<0.0001) lower systolic blood pressure (SBP), oxygen saturation and vital capacity of …
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Effects of Occupational Silica Exposure on OXIDATIVE Stress
Silica is the second most common element after oxygen, and therefore, exposures to crystalline silica dust occur in a large variety of occupations such as metal foundries, constructions, and ceramic, quarry, and pottery industries. Since crystalline silica exposure has been linked with silicosis, lu …
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Understanding mechanisms of antioxidant action in health …
Many foreign compounds ('xenobiotics') induce oxidative stress and are, or can form, electrophiles — agents that react with sites of high electron density on proteins, DNA or lipids (an ...
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Oxidative Stress in the Brain: Basic Concepts and Treatment …
Oxidative stress occurs due to an imbalance between the production and elimination of free radicals under pathological conditions. Oxidative stress is also associated with ageing. ... Shirley R., Ord E., Work L. Oxidative Stress and the Use of Antioxidants in Stroke. Antioxidants. 2014; 3:472–501. doi: 10.3390 ... PDF (1.1M) …
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Stone quarrying induces organ dysfunction and oxidative …
The aim of this study was to evaluate the impact of stone quarrying in Riyadh (Saudi Arabia) on the Libyan jird Meriones libycus. Soil samples and jirds were …
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Biomarkers of Oxidative Stress
These systems are located in a dynamic equilibrium state under normal physiological conditions, while the body antioxidant system could be unbalanced and lead to oxidative stress in pathological states. Oxidative stress is closely related to the occurrence and development of various diseases, including cancer. Therefore, FRs …
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[PDF] Assessment Of Oxidative Stress, Haematological, …
To protect the health of their workers dust needs to be removed from the critical area of the factory and with the use of industrial masks. [Khaled S Al Salhen. Assessment Of Oxidative Stress, Haematological, Kidney And Liver Function Parameters Of Libyan Cement Factory Workers. J Am Sci 2014;10(5):58-65].
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Changes in genotoxicity, inflammatory and oxidative stress parameters
Guanine is the most susceptible nucleic base to oxidative stress caused by reactive oxygen species. 8-oxo-7,8-dihydro-2′-deoxyguanosine (8-oxodG) levels is a convenient marker of oxidative DNA damage and cellular oxidative stress (Pilger and Rüdiger, 2006). Reactive oxygen species may also cause lipid peroxidation by attacking …
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Oxidative stress: an evolving definition
Introduction. Thirty-five years ago, when Sies and Cadenas 1 in their landmark paper "Oxidative stress: damage to intact cells and organs" first introduced the terminology of oxidative stress, few people realized the impact of this contribution, while the definition was still a rather vague one. During the past several decades, free radical …
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Oxidative Stress
Oxidative stress is two sided: Whereas excessive oxidant challenge causes damage to biomolecules, maintenance of a physiological level of oxidant challenge, termed oxidative eustress, is essential for governing life processes through redox signaling. Recent interest has focused on the intricate ways by which redox signaling integrates …
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Oxidative stress: role of physical exercise and antioxidant
In a recent work it was seen that in healthy middle-aged and older adults, who were sedentary or moderately physically active, 12 weeks of curcumin supplementation improves artery endothelial function by increasing vascular nitric oxide bioavailability and reducing oxidative stress . Moreover, it was seen that an active metabolite of curcumin ...
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Oxidative Stress and Antioxidant Defense
When oxidative stress occurs, cells attempt to counteract the oxidant effects and restore the redox balance by activation or silencing of genes encoding defensive enzymes, transcription factors, and structural proteins.101,102 Ratio between oxidized and reduced glutathione (2GSH/GSSG) is one of the important determinants of oxidative …
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(PDF) The Level of Selenium and Oxidative Stress in Workers Chronically
The possible beneficial role of selenium (Se) on the oxidative stress induced by lead (Pb) is still unclear in humans. Therefore, the aim of the present study was to explore the associations among ...
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Effects of Occupational Silica Exposure on OXIDATIVE Stress …
Data demonstrated a significant decrease in levels of GSH and activities of , SOD, and GPx, but a significant increase in MDA levels and activity of GR in all …
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Antioxidant and Oxidative Stress: A Mutual Interplay in Age …
Redox imbalance in age-related diseases. In the last few decades, several models have been suggested to define the interconnection and the biological pathways of aging (Dice, 1993).The widely accepted theory is the "oxidative stress hypothesis" (Ghezzi et al., 2017) that advanced and modified the free radical theory of aging (Harman, …
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Global DNA methylation and oxidative stress biomarkers in workers …
Both the SiO 2 -and TiO 2 -exposed workers showed increased oxidative stress, as assessed by urinary 8-hydroxydeoxyguanosine (8− OHdG), and increased levels of 8-isoprostane in the exhaled ...
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(PDF) Oxidative Stress in Plants
Abiotic stress factors, encompassing drought [1,2], salinity [3,4], extreme temperatures [5], and heavy metals [6], profoundly impact plant growth and development, disrupting cellular homeostasis ...
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(PDF) Stidy of oxidative stress biomarkers in workers of the …
GRIGOROV B., et al. Trakia Journal of Sciences, Vol. 12, № 3, 2014 239 superoxide dismutase (SOD) activity. The levels of "real time" biomarkers of oxidative stress such as ascorbate radicals (Asc .) and reactive oxygen species (ROS) products were also studied by electron paramagnetic resonance (EPR) spectroscopy. MATERIALS AND …
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(PDF) Effects of Occupational Silica Exposure on OXIDATIVE Stress …
Background: Workers in the ceramics industry are often exposed to silica content which is unwittingly inhaled and deposited in the lungs. Macrophages will release Interleukin 8 (IL-8), a chemoattractant that causes neutrophil recruitment to the alveoli and releases proteolytic enzymes that damage the lung parenchyma and cause a decrease in lung function.
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The association between wood dust exposure and …
Introduction. It is estimated that 3.6 million workers in the European Union are exposed to wood dust [1–3].Furniture makers, cabinet makers, carpenters, and veneer/plywood production workers are exposed to wood dust [4, 5].Wood dust is classified into three categories: total, inhalable and respirable dust [].The particles with a mass …
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NEOPTERIN VERSUS OXIDATIVE STRESS …
PDF | NEOPTERIN VERSUS OXIDATIVE STRESS INDICATORS AMONG EGYPTIAN WORKERS IN MARBLE INDUSTRY Article 5, Volume 39, Issue 1, January 2015, Page 67-83... | Find, read …
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Oxidative DNA damage and oxidative stress in lead-exposed workers
As several cytotoxic agents induce oxidative stress and it has been reported an increase of oxidative stress in Pb-exposed workers [25], we investigated the effect of the treatment of ...
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Stone quarrying induces organ dysfunction and oxidative …
These findings can provide scientific evaluation for studying the impact of quarrying on the workers and communities living close to the studied area. Keywords: Heavy metals; …
ادامه مطلب[PDF] IMPACT OF DUST EXPOSURE AMONG STONE QUARRY …
Workers from the stone and quarry industry compensated for silicosis are at an increased risk of developing lung cancer, and the exposure has to be lowered, with a …
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Inflammatory and oxidative stress biomarkers at protein …
Request PDF | Inflammatory and oxidative stress biomarkers at protein and molecular levels in workers occupationally exposed to crystalline silica | Workers chronically exposed to respirable ...
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Measurement of Oxidative Stress Status in Human …
Oxidative stress (OS) is characteristic of a diverse set of physiological and pathophysiological states. For example, human health problems associated with oxidative stress include Parkinson's disease, Alzheimer's disease, myocardial infarction, cancer, diabetes, various inflammations, renal failure, and atherosclerosis as well as aging. It …
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Measurement and Clinical Significance of Biomarkers of Oxidative Stress
1. Introduction. The redox equilibrium is important in preserving the correct functionality of cellular vital functions [].Oxidative stress is defined as the imbalance in the redox characteristics of some cellular environment which can be the result of either biochemical processes leading to the production of reactive species, exposure to …
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(PDF) OXIDATIVE STRESS AND ANTIOXIDANTS: AN OVERVIEW …
Oxidative stress refers to the imbalance between free radicals and their stabilizing agent's antioxidant enzymes in the body. Reactive oxygen species or free radicals can be produced by normal ...
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Assessment of Occupational Health Hazards Associated …
The long exposure to crystalline silica dust, especially at the point sources, and the many years they have worked in the aggregate quarries expose the workers to respiratory …
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(PDF) Antioxidant defense mechanisms enhance oxidative stress tolerance
Plants are mostly challenged by different abiotic stresses such as salinity, drought, temperature extremes, heavy metal toxicity, nutrient deficiency, UV-B radiation, ozone, etc. which cause ...
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