Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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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; …
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Serum TNF-α can be used as a biomarker for detection and follow up of pneumoconiosis in workers exposed to stone dust in quarrying industry. Introduction: The health impacts of working in stone quarrying industry have been well documented. Inhalable dust is produced when the stone is cut and by the breaking of the stones on the quarry …
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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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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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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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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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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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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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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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This study was designed to analyse the effect of duration of exposure, job profile and smoking on lung function of stone quarry workers from Jammu city, Jammu and …
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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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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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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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3. Oxidative Stress in Clinical Samples of Cancer Patients. ROS is a contributing factor in the natural process of aging as well as in various pathological diseases including cancer. Oxidative stress has been reported in almost all types of cancers, promoting many aspects of tumor development and progression . During the process of ...
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The main objectives of the study are: To examine the environmental and health impacts of quarrying activities among the quarry workers in the study area. To analyze major …
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The present review aims to high light on the oxidative stress, and prevention by internal antioxidants and external antioxidants by some natural products possessing antioxidant properties.
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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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While the role of oxidative stress as a contributor to liver diseases is undisputed, it is not yet clear whether targeting oxidative stress pathways offers therapeutic benefits. This is certainly the case in acute liver injury due to acetaminophen toxicity, where the antioxidant N-acetylcysteine (NAC) is used as the first line of treatment.
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1. Introduction. The concept of oxidative stress (OS) first emerged in 1985 in reference to an imbalance between the oxidants which attack the cell and the antioxidants responsible for defending it, leading to the disruption in redox signaling and control, and thus causing molecular damage (Sies Citation 2015).This hypothesis prompted extensive research on …
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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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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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Background: Recent epidemiological studies on workers describe that exposure to pesticides can induce oxidative stress by increased production of free radicals that can accumulate in the cell and damage biological macromolecules, for example, RNA, DNA, DNA repair proteins and other proteins and/or modify antioxidant defense …
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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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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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The objective of the study was to assess the work-related health hazards, personal hygiene and utilization of personal protective equipments among stone quarry …
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Effects of Occupational Silica Exposure on OXIDATIVE Stress and Immune System Parameters in Ceramic Workers in TURKEY ... quarry, and pottery industries. Since crystalline silica exposure has been linked with silicosis, lung cancer, and other pulmonary diseases, adverse effect attributed to this element has be a cause for …
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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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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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Soil from the first (500 m away from the quarry) and second (1800 m away) sites showed a significant increase in cadmium (Cd), lead (Pb), nickel (Ni), and vanadium (V) when compared with the reference site (38,000 m away). ... These findings can provide scientific evaluation for studying the impact of quarrying on the workers and communities ...
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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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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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1. Introduction. Oxidative stress is a causative factor for the onset of diabetes, obesity, and diabetes-induced microvascular diseases, including diabetic retinopathy end-stage renal disease, atherosclerosis, and cardiovascular diseases [1,2,3,4].Oxidative stress results from the excessive intracellular accumulation of …
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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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