Pilot study indicates that dogs eating rice-based dry dog foods could be at risk for chronic arsenic exposure. Rice-consumption is considered a risk factor for chronic arsenic toxicity in humans. A pilot study conducted within the DogRisk research group at the University of Helsinki found that dogs eating rice-based dry dog foods had higher hair arsenic levels than dogs whose diet did not contain rice. The study compared hair arsenic levels from seven dogs that were eating rice-based (having rice as first or second ingredient) dry dog foods and nine dogs whose diet did not contain any rice. All dogs were of the breed Staffordshire bull terrier and had been eating their diets for a minimum of one year prior to the study.. - Considering that dogs often eat the same food daily for long periods of time, sometimes even their whole lives, we need to acknowledge the risk for long-term accumulation of contaminants such as toxic metals. Arsenic is widespread in the environment and accumulates especially ...
Article Policy intervention for arsenic mitigation in drinking water in rural habitations in India: achievements and challenges. This article provides updated status of the arsenic affected rural habitations in India, summarizes the policy initiative...
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Arsenic contamination takes serious turn in Narail. NARAIL June 12 : Arsenic contamination has taken a serious turn in all the three upazilas of the district in recent times, reports BSS. The number of arsenic affected people is increasing in Narail district day by day. Kalia upazila is a severely arsenic affected area in district. About 85 per cent tube-wells in the area are marked with red paint to warn the people that the waters of these tube-wells are contaminated by arsenic, Md Ahsan Habib, Upazila Nirbahi Officer, Kalia said.. In Kalia upazila the waters of 11,304 tube-wells have been tested, of which contamination of arsenic beyond permissible level has been detected in 8,507 tube- wells.In Lohagora upazila, waters of 1,023 tube-wells have been tested, of which contamination of arsenic has been detected in 696 tube-wells. In Narail Sadar upazila the waters of 1,269 tube-wells have been tested and of which contamination of arsenic has been detected in 499 tube-wells.. At least 55 persons ...
TY - JOUR. T1 - Arsenic exposure and methylation efficiency in relation to oxidative stress in semiconductor workers. AU - Pan, Chih Hong. AU - Lin, Ching Yu. AU - Lai, Ching Huang. AU - Jeng, Hueiwang Anna. PY - 2020/5/1. Y1 - 2020/5/1. N2 - This study examined associations between oxidative stress and arsenic (As) exposure and methylation efficiency in semiconductor workers. An As-exposed group (n = 427) and a control group (n = 91) were included. The As-exposure group (n = 427) included 149 maintenance staff members and 278 production staff members representing high As exposure and low As exposure, respectively. The control group included 91 administrative staff members with no or minimal As exposure. An occupational exposure assessment was conducted to assess personal As exposure by measuring As concentrations in urine, hair, and fingernails of the subjects. Urinary As(III), As(V), monomethylarsonic (MMA), and dimethylarsinic acid (DMA) were quantified to assess an internal dose of inorganic ...
To date, we have analyzed 8334 hand tubewell water samples from 1374 villages/Para/wards in 79 GPs/ Municipal area from 17 blocks of this district. Table I shows the distribution of arsenic in tubewell water from South 24 Parganas district. Figure I shows the groundwater arsenic contamination status in 17 blocks of South 24 Parganas with Pie-diagram distribution. Table I shows that arsenic concentration above 10 µg/L in 3500 (42%) hand tubewells and in 2359 (28.3%) above 50 µg/Land 547 (6.6%) had arsenic concentrations above 300µg/L. From the above analysis, it appears that groundwater in 12 block contains arsenic above WHO guideline value of arsenic in drinking water (10 µg/L) and 11 blocks exceeds Indian standard value for As in drinking water (50 µg/L). Arsenic level above 1000µg/L was found in 30 tubewells; the maximum arsenic contamination level found in this district is 3700µg/L in the Baruipur block. In blocks Diamond Harbour, Gosaba, Joynagar II and Thakurpukur all the tubewells ...
TY - BOOK. T1 - Arsenic Exposure and Health Effects IV. T2 - Arsenic exposure, null genotypes of glutathione s-transferase m1, t1 and p1, and risk of carotid atherosclerosis among residents in the Lanyang Basin of Taiwan. AU - Chappell, W.R.. AU - Abernathy, C.O.. AU - Calderon, R.L.. AU - Chiou, Hung-Yi. AU - Wang, I.H.. AU - Hsueh, Yu-Mei. AU - Chiou, S. T.. AU - Chou, Yi Li. AU - Teh, Hee-Wen. AU - Chen, Chien Jen. PY - 2001. Y1 - 2001. N2 - This collected volume of authoritative articles represents the state-of-the-art in arsenic research. Arsenic experts from around the world, participants in the Fourth International Conference on Arsenic Exposure and Health Effects organized by the Society of Environmental Geochemistry and Health in 2000, present their critical findings.A vital contribution to arsenic study and policy making, this volume examines the global impact of the toxin and discusses arsenic in the environment, mechanisms of arsenic metabolism and carcinogenesis, water treatment ...
The Binational Arsenic Exposure Survey (BAsES) was designed to evaluate probable arsenic exposures in selected areas of southern Arizona and northern Mexico, two regions with known elevated levels of arsenic in groundwater reserves. This paper describes the methodology of BAsES and the relationship between estimated arsenic intake from beverages and arsenic output in urine. Households from eight communities were selected for their varying groundwater arsenic concentrations in Arizona, USA and Sonora, Mexico. Adults responded to questionnaires and provided dietary information. A first morning urine void and water from all household drinking sources were collected. Associations between urinary arsenic concentration (total, organic, inorganic) and estimated level of arsenic consumed from water and other beverages were evaluated through crude associations and by random effects models. Median estimated total arsenic intake from beverages among participants from Arizona communities ranged from 1.7 to 14.1 µg
To date, we have analyzed 29668 hand tubewell water samples from 1721 villages / wards in 250 GPs/ Municipal area from all 26 blocks of the district (Table I). Figure I shows the groundwater arsenic situation in each block of Murshidabad with Pie-diagram distribution. We observed arsenic concentration above 10 µg/L in 15953 (53.8%) hand tubewells and in 7911 (26.7%) above 50 µg/L and 1337 (4.5%) of the tubewells had arsenic concentrations above 300µg/L. In Murshidabad the number of villagers where we found arsenic concentration above 10, 50 and 300 µg/L are 1320, 971 and 281 respectively; and 25, 24 and 17 blocks were found to be contaminated with arsenic levels above 10, 50 and 300 µg/L. Arsenic level above 1000µg/L was found in 71 tubewells; the maximum arsenic contamination level found in this district is 3003µg/L in the Nawda and Raghunathganj I blocks. ...
Arsenic contamination takes serious turn in Chandpur. CHANDPUR, June 25: Arsenic contamination has taken a serious turn in Chandpur district recently.. This was disclosed by Md. Sadeq Hossain, Executive Engineer of the local Public Health Engineering Department, in an exclusive talk with this correspondent recently.. About 1.25 lakh shallow tube-wells of all the eight upazilas of the district have already been sealed as the waters of those contain arsenic beyond permissible limits which are very much harmful to human body, he added. He disclosed that on an average 98 per cent shallow tube-wells of the district are arsenic contaminated.. A survey shows that 96 per cent tube-wells in Hajiganj, 98 per cent tube-wells in Faridganj, Shahrasti and Kochua, 85 per cent tube-wells in Haimchar and 80 per cent tube-wells in Matlab Sadar and newly created Matlab North upazilas are arsenic contaminated.. It is officially learnt that at present 5,000 people, mostly old men, women and children have been ...
Descrição: Emerging data indicate that rice consumption may lead to potentially harmful arsenic exposure. However, few human data are available, and virtually none exist for vulnerable periods such as pregnancy. Here we document a positive association between rice consumption and urinary arsenic excretion, a biomarker of recent arsenic exposure, in 229 pregnant women. At a 6-mo prenatal visit, we collected a urine sample and 3-d dietary record for water, fish/seafood, and rice. We also tested womens home tap water for arsenic, which we combined with tap water consumption to estimate arsenic exposure through water. Women who reported rice intake (n = 73) consumed a median of 28.3 g/d, which is ∼0.5 cup of cooked rice each day. In general linear models adjusted for age and urinary dilution, both rice consumption (g, dry mass/d) and arsenic exposure through water (μg/d) were significantly associated with natural log-transformed total urinary arsenic (βrice = 0.009, βwater = 0.028, both P < ...
Ingestion of arsenic is relatively common in the setting of homicide and is occasionally used in deliberate self-poisoning. Arsine gas and CCA exposure are not uncommon industrial exposures. Most organs can be involved and the diagnosis may not be obvious. \\ \\ Arsenic is a classic poison; implicated in the deaths of Tchaikovsky and Napoleon. It has also been used as a therapeutic substance since ancient times. It has been used in traditional Chinese medicines and most recently as a chemotherapeutic agent for the treatment of acute promyelocytic leukaemia. Chronic arsenic poisoning is a major public health crisis and an environmental disaster in Bangladesh and West Bengal, due to the contamination of ground water that affects millions of people. These chronic problems are beyond the scope of this course. \\ \\ Arsenic exists in many forms: arsine gas, elemental arsenic, inorganic oxides and organic arsenic. Acute arsenic poisoning is rare. The elemental form of arsenic is non-toxic but the ...
Spirulina is blue - green algae that grow both in fresh and salt water. For many years, the alga has used for various health purposes around the world. This nutrient-rich alga is a natural supplement that provides amazing health benefits to the users. Here are the benefits of Spirulina.. #1. Detoxing properties The studies show that regular intake of Spirulina can effectively detox heavy metals such as Arsenic. It has been demonstrated that chronic Arsenic toxicity is common in most parts of the world. Millions of people consume Arsenic through drinking water. Apparently, there is no specific treatment for arsenic toxicity. However, the clinical trials have proven that Spirulina can significantly reduce the level of toxicity in the body.. #2. Packed with essential nutrients Our bodies require essential nutrients for proper functioning. Fortunately, Spirulina is rich in essential nutrients and low in calories. The algae manufacture its food through photosynthesis thus making it rich in vital ...
Spirulina is blue - green algae that grow both in fresh and salt water. For many years, the alga has used for various health purposes around the world. This nutrient-rich alga is a natural supplement that provides amazing health benefits to the users. Here are the benefits of Spirulina.. #1. Detoxing properties The studies show that regular intake of Spirulina can effectively detox heavy metals such as Arsenic. It has been demonstrated that chronic Arsenic toxicity is common in most parts of the world. Millions of people consume Arsenic through drinking water. Apparently, there is no specific treatment for arsenic toxicity. However, the clinical trials have proven that Spirulina can significantly reduce the level of toxicity in the body.. #2. Packed with essential nutrients Our bodies require essential nutrients for proper functioning. Fortunately, Spirulina is rich in essential nutrients and low in calories. The algae manufacture its food through photosynthesis thus making it rich in vital ...
Inorganic arsenic is a human carcinogen that can target the liver, but its carcinogenic mechanisms are still unknown. Global DNA hypomethylation occurs during arsenic-induced malignant transformation in rodent liver cells. DNA hypomethylation can increase gene expression, particularly when occurring in the promoter region CpG sites, and may be a non-genotoxic mechanism of carcinogenesis. Thus, in the present study liver samples of male mice exposed to 0 (control) or 45 p.p.m. arsenic (as NaAsO2) in the drinking water for 48 weeks were analyzed for gene expression and DNA methylation. Chronic arsenic exposure caused hepatic steatosis, a lesion also linked to consumption of methyl-deficient diets. Microarray analysis of liver samples showed arsenic induced aberrant gene expression including steroid-related genes, cytokines, apoptosis-related genes and cell cycle-related genes. In particular, the expression of the estrogen receptor-α (ER-α), and cyclin D1 genes were markedly increased. RT-PCR and ...
The WHO recommended value of arsenic contamination in water is 0.01 mg/l, while the maximum permissible limit for Bangladesh and India has been fixed at 0.05 mg/l. In the DCH-SOES survey, less than 0.01 mg/l arsenic concentration was detected in 46% or 2803 out of 6101 water samples while above the WHO recommended value (0.01 mg/l) was found in the rest 54% or 3298 samples. On the other hand, arsenic concentration at less than the permissible limit (0.05 mg/l) was detected in 62% or 3783 samples, while above the limit was found in the rest 38% or 2318 water samples. Arsenic contamination at higher level than the WHO recommended value was found in the tube-wells of 52 districts out of the 60 surveyed. Of these, the level of arsenic presence exceeds the maximum permissible limit in the tube-wells water of 41 districts. In 11 districts, the level of arsenic concentration was found more than the WHO recommended value, but less than the maximum permissible limit. That means, highest 0.05 mg/l exist ...
Introduction: Human are exposed to arsenic threats in several ways. Our drinking water for instance, can be hazardous due to the contamination of arsenic-based pesticide and herbicide into our water supply. The most vulnerable part of our body due to ingestion of arsenic is our gastrointestinal system. Thus, the aim of this study was to determine the effects of chronic exposure to organic arsenic (Monosodium methylarsonate, MSMA) on the surface topography of rats colonic mucosa by using scanning electron microscope (SEM). Materials and Methods: 30 Sprague Dawley rats were given daily oral gavage of MSMA 42.13 mg/kg, which is 1/30 LD50, and 30 Sprague Dawley rats acted as control. 10 exposed rats and 10 control rats were sacrificed at regular intervals (2 months, 4 months and 6 months) and their colon specimens were examined by SEM. Results: In the control group, the colonic mucosa appeared normal with uniform size individual glandular units and has a central crypt orifice. The goblet cells were ...
Arsenic dissolved in water is acutely toxic and can lead to a number of health problems. Long-term exposure to arsenic in drinking-water causes increased risks of cancer in the skin, lungs, bladder and kidney. It also leads to other skin-related problems such hyperkeratosis and changes in pigmentation. Consumption of arsenic also leads to disturbance of the cardiovascular and nervous system functions and eventually leads to death. These health effects sometimes collectively referred to as arsenicosis have been demonstrated in many studies. Increased risks of lung and bladder cancer and of arsenic-associated skin lesions have been reported for consuming drinking-water with arsenic concentrations equal to or greater than 50 parts per billion (or microgram per liter). (WHO Environmental Health Criteria, No. 224: Arsenic).. Arsenicosis is recognizable from skin colour changes, blotches all over the face and body, hyper pigmentation on the chest and upper arms, hard patches on palms and soles of the ...
Millions now suffer the effects of chronic arseniasis related to environmental arsenic exposure. The biological mechanisms responsible for arsenic-induced toxicity and especially chronic effects, including cancer, are not well known. The U.S. Armed Forces Institute of Pathology (AFIP) is participati …
Arsenic (As) is an ubiquitous chemical element that occurs in nature in the form of organic and inorganic compounds, and its harmful effects are well known and described. It is well known that inorganic arsenic (III and V) compounds are more toxic than organic compounds. Also the bioavailability of arsenic from different chemical compounds varies. Organic forms of arsenic, which are most commonly found in fish and seafood, undergo little biotransformation after consumption and are excreted from the body in virtually unchanged form. On the other hand, inorganic arsenic compounds are well absorbed and metabolized. Adverse effects of inorganic arsenic Long-term exposure to arsenic derived from inorganic compounds results in an increased risk of developing various types of cancer, including skin, bladder, lung, kidney, liver and prostate cancer. In addition, exposure to inorganic arsenic is accompanied by disorders of gastrointestinal, cardiovascular, blood, respiratory, neurological, immune, ...
Arsenic biochemistry refers to biochemical processes that can use arsenic or its compounds, such as arsenate. Arsenic is a moderately abundant element in Earths crust, and although many arsenic compounds are often considered highly toxic to most life, a wide variety of organoarsenic compounds are produced biologically and various organic and inorganic arsenic compounds are metabolized by numerous organisms. This pattern is general for other related elements, including selenium, which can exhibit both beneficial and deleterious effects. Arsenic biochemistry has become topical since many toxic arsenic compounds are found in some aquifers, potentially affecting many millions of people via biochemical processes. The evidence that arsenic may be a beneficial nutrient at trace levels below the background to which living organisms are normally exposed has been reviewed. Some organoarsenic compounds found in nature are arsenobetaine and arsenocholine, both being found in many marine organisms. Some ...
Arsenic is carcinogenic, possibly partly through epigenetic mechanisms. We evaluated the effects of arsenic exposure and metabolism on DNA methylation. Arsenic exposure and methylation efficiency in 202 women in the Argentinean Andes were assessed from concentrations of arsenic metabolites in urine (inorgani
Arsenic is found in multiple forms, some of which are more toxic to humans than others. In Alaska, most arsenic in groundwater is likely derived from inorganic arsenic that occurs naturally in the Earths crust, most commonly as the mineral arsenopyrite. When arsenopyrite oxidizes into its elemental components (similar to the way iron rusts) and those components enter the groundwater system, the resulting arsenic, as pentavalent arsenic [As(V) or arsenate] and trivalent arsenic [As(III) or arsenite], is toxic to humans. Arsenite is both more harmful and more mobile in groundwater than arsenate. Soils in some parts of Alaska have high concentrations of inorganic arsenic, which can leach into groundwater and render private well water unsafe for consumption. Arsenic in surface water, however, tends to bind with iron oxide and organic material, making it less mobile, and therefore, less likely to reach drinking water sources. Arsenic also accumulates in food crops grown in arsenic-rich soil or ...
This blood test is used to measure Arsenic levels. Arsenic is a common cause of acute poisoning through heavy metals. Arsenic enters the environment through the smelting of copper, zinc and lead and is released through the manufacturing of certain chemicals. Pesticides that contain arsenic, when manufactured, release arsine gas. Arsenic has been found in water supplies around the world, which has the potential to leach into seafood. Arsenic is found in rat poisoning, fungicides and products used to protect wood. Arsenic toxicity affects the blood, kidneys, skin, digestive tract and central nervous system ...
Compounds of arsenic were recognized as highly toxic long before arsenic was even recognized as an element in 1649 (by Schroeder, a German pharmacist). Nero used arsenic to poison Britannicus in 55 AD to secure the Roman throne. In 17th century France, white arsenic (As2O3) was known as poudre de succession (inheritance powder). Today, approximately 90 percent of all arsenic used in the US is used as a wood preservative. Arsenic is also used in electronics (gallium arsenide) and continues to be used in agricultural chemicals (pesticides, insecticides, herbicides, algaecides, fungicides and growth stimulants for plants and animals). Arsenic, being an element, is never destroyed once released into the environment. It will be with us forever.. Arsenic consumption is linked to a number of adverse health effects including skin, bladder and lung cancer. Oxygenated compounds of arsenic (arsenates: As+5 and arsenites: As+3) are soluble in water and, when ingested, mimic phosphates in the body. They can ...
BACKGROUND A large population in West Bengal, India has been exposed to naturally occurring inorganic arsenic through their drinking water. A cross-sectional survey involving 7683 participants of all ages was conducted in an arsenic-affected region between April 1995 and March 1996. The main focus of the study was skin keratoses and pigmentation alterations, two characteristic signs of ingested inorganic arsenic. Strong exposure-response gradients were found for these skin lesions. The study also collected limited information concerning respiratory system signs and symptoms, which we report here because increasing evidence suggests that arsenic ingestion also causes pulmonary effects. METHODS Participants were clinically examined and interviewed, and the arsenic content in their current primary drinking water source was measured. There were few smokers and analyses were confined to non-smokers (N = 6864 participants). RESULTS Among both males and females, the prevalence of cough, shortness of breath
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The control of arsenic, a toxic and carcinogenic element, is an important issue for all copper smelters. In this work, the reaction mechanism and distribution behavior of arsenic in the bottom blown copper smelting process (SKS process) were investigated and compared to the flash smelting process. There are obvious differences of arsenic distribution in the SKS process and flash process, resulting from the differences of oxygen potentials, volatilizations, smelting temperatures, reaction intensities, and mass transfer processes. Under stable production conditions, the distributions of arsenic among matte, slag, and gas phases are 6%, 12%, and 82%, respectively. Less arsenic is reported in the gas phase with the flash process than with the SKS process. The main arsenic species in gas phase are AsS (g), AsO (g), and As2 (g). Arsenic exists in the slag predominantly as As2O3 (l), and in matte as As (l). High matte grade is harmful to the elimination of arsenic to gas. The changing of Fe/SiO2 has slight
2000, describes a method for removing arsenic from fly ash, in which arsenic is recovered as scorodite. The first treatment stage of the arsenic-containing material is the oxidation of trivalent arsenic (As(lll)) into pentavalent arsenic (As(V)) with a gas containing sulphur dioxide and oxygen in oxidising conditions, in which arsenic does not precipitate. After this, arsenic is precipitated in atmospheric conditions, in which the Fe(III)/As(V) mole ratio is specified as 1. Precipitation is carried out either in one or several stages, but precipitation as scorodite demands the over-saturation of the solution, which is achieved by recycling scorodite crystals to the first precipitation reactors and simultaneously neutralising the suspension. A beneficial pH range is around 1-2 and this is maintained by feeding a suitable neutralising agent into the precipitation stage. In these conditions, arsenic can be precipitated to the level of 0.5 g/l. The final arsenic removal to a level below 0.1 mg/l is ...
I was told that someone could die of arsenic toxicity from eating a lot of shrimps/prawns. Im sure a lot means A LOT. Could you explain how this could happen and what happens in the system, and how to avoid/cure it? Thanl you ...
The Blackfoot are a tribe of Native Americans who currently live in Montana and Alberta. They lived northwest of the Great Lakes and came to participate in Plains Indian culture. In Blackfoot mythology, the supernatural world is dominated by the Sun. The Sun or the Creator (Nah-too-si; Super powered or Holiness) is believed to have created the earth and everything in the universe. Nah-too-si is sometimes personified by the mystical Napi, or Old Man. Napi was said to have been sent by the Nah-too-si to teach people how to live a sinless life, like He and his wife, Ksah-koom-aukie, Earth Woman. Napi is said to have given the Blackfoot visions and, by implication, Blackfoot music. The numbers four and seven, the cardinal directions, the six principle points and center, are important in Blackfoot mythology. Communication is believed to occur between the supernatural world and Blackfoot through visions of guardian spirits, during which songs and ceremonies may be imparted, such as that of medicine ...
Ganga-Meghna-Bramhaputra basin is one of the major arsenic-contaminated hotspot in the world. To assess the level of severity of arsenic contamination, con
Results for arsenic in groundwater (arsenic contamination) equipment from AdEdge, Apyron, ATOMISOL and other leading brands. Compare and contact a supplier near you on (health and safety) - Environmental XPRT
Rep. Rosa DeLauro (D-CT) introduced a bill in Congress on Thursday which would limit the amount of inorganic arsenic permitted in rice and rice-based foods. The R.I.C.E (Reducing food-based Inorganic Compounds Exposure) Act would require the Food and Drug Administration to set a maximum permissible level of inorganic arsenic in rice and food containing rice. "Inorganic arsenic… Continue Reading. ...
The authors estimated the global burden of disease for bladder, lung, and skin cancers attributable to inorganic arsenic in food. The authors - 1) established dose response estimates by converting dose response estimates for water exposure to human dose; 2) estimated exposure using data on a common range of arsenic content for food crops grown in different parts of the world and dietary patterns in different parts of the world; 3) multiplied the dose-response slope factor with the estimated range of daily dietary inorganic arsenic exposure to characterize cancer risk; and 4) summed across different populations to estimate the global burden of a particular arsenic-induced cancer ...
5.1 Exposure data. Exposure of high levels of arsenic in drinking-water has been recognized for many decades in some regions of the world, notably in China, Taiwan (China) and some countries in Central and South America. More recently, it has been discovered that a number of other regions have drinking-water that is highly contaminated with arsenic. In most of these regions, the drinking-water source is groundwater, naturally contaminated from arsenic-rich geological formations. The primary regions where high concentrations of arsenic have been measured in drinking-water include large areas of Bangladesh, China and West Bengal (India) and smaller areas of Argentina, Australia, Chile, Mexico, Taiwan (China), the USA and Viet Nam. In some areas of Japan, Mexico, Thailand and other countries, mining, smelting and other industrial activities have contributed to elevated concentrations of arsenic in local water sources.. Levels of arsenic in affected areas may range from tens to hundreds or even ...
Exposure to arsenic, a common environmental toxin found in drinking water, leads to a host of neurological pathologies. We have previously demonstrated that developmental exposure to a low level of arsenic (50ppb) alters epigenetic processes that underlie deficits in adult hippocampal neurogenesis leading to aberrant behavior. It is unclear if arsenic impacts the programming and regulation of embryonic neurogenesis during development when exposure occurs. The master negative regulator of neural-lineage, REST/NRSF, controls the precise timing of fate specification and differentiation of neural stem cells (NSCs). Early in development (embryonic day 14), we observed increased expression of Rest, its co-repressor, CoREST, and the inhibitory RNA binding/splicing protein, Ptbp1, and altered expression of mRNA spliced isoforms of Pbx1 that are directly regulated by these factors in the male brain in response to prenatal 50ppb arsenic exposure. These increases were concurrent with decreased expression of
The result of this study demonstrates a dose-response relationship between inorganic arsenic exposure from drinking water and risk of hypertension. Despite the lack of previous individual exposure data and the lack of information on potential confounders other than those we controlled for, the association seems strong enough to support the possibility of a causal association. There is also good agreement with the observations from Taiwan.8 Although there was no comprehensive, systematic sampling of the water supplies of the study area, the existing water measurements permit a reasonably good assessment of arsenic exposure. Furthermore, the effect of various unknown factors, such as use of bottled water, would dilute the effect and lead to an underestimation of the association. Because our study subjects were recruited from villages in which residents had similar occupations, socioeconomic status, lifestyles, and dietary habits, including salt intake, the variation among subjects of these ...
In January 2016, the EU imposed a maximum limit of inorganic arsenic on manufacturers in a bid to mitigate associated health risks. Researchers at the Institute for Global Food Security at Queens have found that little has changed since this law was passed and that 50 percent of baby rice food products still contain an illegal level of inorganic arsenic.. "This research has shown direct evidence that babies are exposed to illegal levels of arsenic despite the EU regulation to specifically address this health challenge. Babies are particularly vulnerable to the damaging effects of arsenic that can prevent the healthy development of a babys growth, IQ and immune system to name but a few," said Andy Meharg, lead author of the study and professor of plant and soil sciences at Queens.. Rice has, typically, 10 times more inorganic arsenic than other foods and chronic exposure can cause a range of health problems including developmental problems, heart disease, diabetes and nervous system ...
From our show, youve heard about high arsenic levels in apple juice. Now, a new report sheds light on arsenic levels in another food: rice.
About Arsenic== Arsenic is the 33rd element which symbol is As in the periodic table and is a chemical element found in many mineral or in pure crystal forms. ,br> It is or was used in many industrial sectors as chemistry, electronics, metalworking, military, pharmaceutical, phytosanitary, mining, and others. ,br> Arsenic is also found in ground water, soil, air due to industrial or geological pollution and is found in many different forms and is often conjugated with sulfur and others metal.,br> Almost all arsenic products are toxic but the inorganic ones are more dangerous. The AsO3, also called arsenic trioxide or arsenite, is one of the most common form in the environment because of its important production in industry (around 50000 tones per year). Its also a soluble form which thus can be ingested by drinking water which contain some. It explains why its one of the most toxic form (until 500 times more toxic than pure arsenic). ,br>,br> Acute intoxication is caused by ingestion of a ...
Protection against arsenic damage in organisms positioned deep in the tree of life points to early evolutionary sensitization. Here, marine sedimentary records reveal a Proterozoic arsenic concentration patterned to glacial-interglacial ages. The low glacial and high interglacial sedimentary arsenic concentrations, suggest deteriorating habitable marine conditions may have coincided with atmospheric oxygen decline after ~2.1 billion years ago. A similar intensification of near continental margin sedimentary arsenic levels after the Cryogenian glaciations is also associated with amplified continental weathering. However, interpreted atmospheric oxygen increase at this time, suggests that the marine biosphere had widely adapted to the reorganization of global marine elemental cycles by glaciations. Such a glacially induced biogeochemical bridge would have produced physiologically robust communities that enabled increased oxygenation of the ocean-atmosphere system and the radiation of the complex ...
The arsenic speciation and arsenic removal in chitosan packed column were studied. Arsenic removal experiments were carried out with an arsenic standard solution (1.0 mg/l) and drilled well water samples from Limon Mine Community at different pH, water flowrate, and volume of adsorbent material. The simulation of arsenic speciation was carried out at a pH range from 0 to 12, a temperature of 25ºC, a pE equal to 4, and a total arsenic concentration of 1.34 x 10-5 mol kg-1. According to speciation calculations arsenic is found mainly in oxidized form in the conditions of Limon Mines drilled well waters, dihydrogen arsenate ion (H2AsO4-), and hydrogen arsenate ion (HAsO42-) being the major species. The experiments showed that arsenic adsorption depends mainly on the pH as well as the activity of functional groups that compose the chitosan structure. At pH 3 and volume of adsorbent material of 337.8 cm3 an adsorption of 94% was obtained from arsenic standard solution, and the arsenic present in ...
Inorganic arsenic contamination of rice is a problem that has plagued rice supplies worldwide because rice is particularly effective at pulling metals out of soil. And it has not helped that millions of pounds of lead-arsenate and calcium-arsenate pesticides have been sprayed across many countries fields and orchards. In the United States especially, calcium arsenate was heavily sprayed on cotton crops, whose fields are highly contaminated with inorganic arsenic which in turn seeps into neighboring rice fields. Is it any surprise, then, that we have an arsenic problem in rice today? We truly do reap what we sow.. Classified as a human carcinogen, arsenic is particularly nasty at higher doses and inorganic arsenic is far worse than organic arsenic. But at very low doses arsenic actually has a hormetic effect, strengthening the organism to which it has been exposed. The CCCF, though, is concerned with levels of inorganic arsenic that will adversely affect human health.. Japan launched the ...
DESCRIPTION (provided by applicant): Today, arsenic (As) poisoning is one of the major environmental threats worldwide as millions of human beings have been exposed to excessive arsenic through contaminated drinking water. The serious toxicity of arsenic has been well documented. Worldwide, communities demand novel separation technologies for the removal of arsenic from drinking water. Conventional adsorbent technologies currently in use for remediation of metal-contaminated water have various limitations in terms of capacity, selectivity and robustness. In this Phase I program, an arsenic selective ligand-anchored fiber adsorbent will be developed as the basis for an innovative arsenic removal technology for drinking water with higher capacity, good selectivity, and enhanced robustness compared to conventional technologies such as ion exchange, activated alumina, and others. The goals for this Phase I program will be achieved through the following Specific Aims: 1) to functionalize fibers with ...
Methods: C57BL/6 mice were exposed to arsenic in utero and throughout postnatal life. At 1 week of age, a subgroup of mice were infected with influenza A. We then assessed the acute and long-term effects of arsenic exposure on viral clearance, inflammation, lung structure, and lung function ...
ARSENIC Meaning: yellow arsenic, arsenic trisulphide, from Old French arsenic, from Latin arsenicum, from late Greek… See definitions of arsenic.
Pabitra Mukhopadhyay has written an excellent article focusing attention on a serious environmental problem, that of arsenic in drinking water. Some areas of the U.S. have high arsenic levels in groundwater, but they are in less populated regions that have been able to find other sources for drinking water. However, many of the tube well drilled in Bangladesh and West Bengal, the adjoining Indian state, bring water to the surface that is highly contaminated with arsenic. The problem is serious as it was not discovered for a long time, and many people have been sickened or died from arsenic poisoning. Many more have been exposed to levels that will cause further health problems. Exposure at even low levels may cause cancer later as arsenic is a potent carcinogen. While Pabitras article dealt with the arsenic situation in general, this is an account of the physical and chemical processes related to arsenic contamination in ground water.. Arsenic is a reactive metalloid that is rarely found ...
The third reason is because of the high levels of arsenic that can be found in rice. With the increase of gluten and dairy sensitivities, many people are turning to rice, rice flours, and rice protein as an alternative. In the general U.S. population, the main source of arsenic exposure is via ingestion of food containing arsenic (1). While rice isnt the only food source containing arsenic, it is near the top of the list due to high levels in our water and soil. Rice absorbs more arsenic from these sources than other common food crops (2) ...