Exposure to arsenic

The presence of inorganic forms of arsenic in water causing a serious threat to human health. Exposure of arsenic can cause serious diseases such as skin discoloration, cancer of skin, kidney and lung, blood vessel diseases, high blood pressure, and reproductive disorders.

5p vimichaelfaraday 28-12-2023 4 3   Download

Present study aims to evaluate the amleorative potential of Mentha piperita (MP) against arsenic trioxide (ATO) in freshwater fish Channa punctatus (Bloch). Fish were divided into six groups. G1 served as control. Fish of G2 and G3 were treated with 96 h-LC50/10 of ATO and 8 mg/l of MP, respectively. In G4, G5 and G6, fish were given simultaneous treatment of 96 h-LC50/10 of ATO along with 2 mg/l, 4 mg/l, and 8 mg/l concentrations of MP. Samples collected at the interval of 24 h till 96 h exposure period. Result reveals an increased frequency of micronuclei (MN) in G2 on comparing with the G1.

7p angicungduoc4 04-05-2020 12 0   Download

Inorganic Arsenic (iAs) contamination of groundwater had been a major health hazard. In West-Bengal, many areas had been found to have high level of iAs in groundwater. Chronic exposure to iAs may lead to the generation of Reactive Oxygen Species (ROS) and Reactive Nitrogen Species (RNS). This results in DNA damage, inflammation, impairment of repair activity, thereby culminating in carcinogenesis. Higher telomerase activity may be another manifestation of iAs exposure. This is a pilot study involving 15 subjects residing in an arsenic endemic area of West-Bengal.

14p caygaocaolon4 04-04-2020 15 1   Download

Exposure to arsenic via drinking water is a significant environmental issue affecting millions of people around the world. Exposure to arsenic during foetal development has been shown to impair somatic growth and increase the risk of developing chronic respiratory diseases.

9p vienzym2711 03-04-2020 14 1   Download

Anthropogenic activities such as industrial production, mining, agriculture and transportation are among the main causes for the increase of trace metal concentrations in the environment, especially in water bodies. In this study, we evaluated the chronic impacts of lead (Pb) and arsenic (As) on Daphnia magna, a crucial organism to aquatic ecosystems, at several concentrations (0, 5, 25, 50, 150 and 250 µgl-1 of Pb and 0, 5, 25, 50 µgl-1 of As) for 21 days. The organism’s life history traits, including survivorship, maturation, and reproduction, were recorded daily.

6p chauchaungayxua2 07-01-2020 27 0   Download

In a previous study, we found that induced expression of Heme Oxygenase-1 (HO-1) is responsible for the resistance of human osteosarcoma MG63 cells to the chemotherapeutic agent arsenic trioxide (ATO). The present study was aimed at investigating the molecular mechanisms underlying the induction of HO-1 that occurs after exposure of MG63 cells to ATO.

6p viwashington2711 04-12-2019 5 1   Download

Metal contamination and pollution are of human and environmental concern Phytoremediation is one of the suitable high-efficiency means to treat metal pollution. This study aims to observe the responses of Pisum sativum L. in its early life stage to three metals, arsenic (As), copper (Cu) and lead (Pb) in laboratory conditions. Seeds of P. sativum were treated with water containing 0, 50, and 500 µg/l of these metals over a period of 7 days. The results show that the germination of seeds is similar for the control and metal treatments, ranging from 90-100% after 4 days of watering.

4p caygaocaolon1 13-11-2019 7 1   Download

The mechanisms underlying cardiovascular diseases induced by chronic exposure to arsenic remain unclarified. The objectives of this study were to investigate whether increased vascular leakage is induced by inflammatory mustard oil in mice systemically exposed to various doses of arsenic and whether an increased vascular leakage response is still present in arsenic-fed mice after arsenic discontinuation for 2 or 6 months.

5p vinasaki2711 12-11-2019 14 1   Download

Due to the high toxicity of arsenic and the poison effects to human being, identification and quantification of individual arsenic forms are important to appropriately measure the arsenic toxicity, environmental impact and health risk related to arsenic exposure. Arsenic species were quantified by HPLC-UV-HG-AAS. The separation was performed on an anion exchange Hamilton PRP-X100 (250 mm× 4,1 mm i.d.× 10 µm) column by using mobile phase A: 12 mmol/l KH2PO4- K2HPO4; pH = 6.5 and B: 24 mmol/l KH2PO4-K2HPO4; pH = 6.

6p uocvong02 24-09-2015 77 3   Download

It is evident that insecticides have been used to boost food production to a considerable extent and to control vectors of disease. However, these advantages that are of great economic benefits sometimes come with disadvantages when subjected to critical environmental and human health considerations. Many insecticides are newly synthesized whose health and environmental implications are unknown.

388p conquynho32 15-09-2012 72 9   Download

Có ít nhất 600 loại thuốc trừ sâu khác nhau trong sử dụng và 45.000 đến 50.000 công thức thuốc trừ sâu có thể bao gồm một hoặc nhiều thuốc trừ sâu như các thành phần hoạt động (ai). Thuốc trừ sâu bao gồm một loạt các các hợp chất hóa học khác nhau, từ các chất vô cơ như nguyên tố lưu huỳnh và chromated arsenate đồng, các hợp chất hữu cơ dễ bay hơi (VOC) như methyl bromide và paradichlorobenzene, các hợp chất hữu cơ semivolatile (SVOCs) như diazinon và chlorpyrifos, và không bay hơi các hợp chất hữu cơ (NVOCs) như 2,4-D...

31p bengoan741 22-12-2011 76 10   Download

Arsenic is a strong stimulus of heme oxygenase (HO)-1 expression in experimental studies in response to oxidative stress caused by a stimulus. A functional GT-repeat polymorphism in the HO-1 gene promoter was inversely correlated to the development of coronary artery disease in diabetics and development of restenosis following angioplasty in patients. The role of this potential vascular protective factor in carotid atherosclerosis remains unclear. We previously reported a graded association of arsenic...

11p toshiba23 18-11-2011 41 2   Download

The environmental metals of greatest concern are lead, mercury, arsenic, and cadmium. In the past, lead paint was available for use in homes, and lead pipes and/or lead solder delivered water to some homes. As a result, people can be exposed to lead on a daily basis; this exposure is a major pediatric concern. Mercury similarly is a contaminant of our environment; human beings are exposed to mercury in the fish they eat as well as in the amalgam fillings in their teeth.

78p vanass 01-04-2011 62 11   Download