Negative Correlation between Urinary Selenium and Arsenic Levels of the Residents Living in an Arsenic-Contaminated Area in Bangladesh

Miyazaki, Kunihiko; Ushijima, Kayo; Kadono, Takefumi; Inaoka, Tsukasa; Watanabe, Chiho; Ohtsuka, Ryutaro

doi:10.1248/jhs.49.239

Cited by 18 publications

(10 citation statements)

References 14 publications

(9 reference statements)

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“…It has been reported that selenium may act as an antagonist to arsenic. Furthermore, selenium dietary supplements were found to significantly decrease the arsenic body load [14,23]. In our study, we found normal ranges of selenium concentration with quite similar median values of 125 μg/L for the control and 113 μg/L for the northern inhabitants, respectively.…”

Section: Resultssupporting

confidence: 70%

Study on Some Trace Element Contents in Serum and Nail Samples Obtained from Sudanese Subjects

Ebrahim¹,

Eltayeb²,

Benker³

et al. 2011

Biol Trace Elem Res

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This study was performed to investigate trace elements and arsenic contents among Sudanese inhabitants living in the north, east, and west of Sudan. Inductively coupled plasma atomic emission spectrometry was used to determine the contents of Zn and Cu. Graphite furnace atomic absorption spectrometry was used to determine Se in serum samples. It was found that Se and Cu are in the normal range. Zinc showed discrepancies among all studied groups. Acute Zn deficiency was detected in the northern and eastern regions of Sudan. Inductively coupled plasma mass spectroscopy was operated in the dynamic reaction cell mode to determine the arsenic content in the nail samples of the northern inhabitants of Sudan. High values of arsenic were found in the northern people compared with the control group. This elevation could be linked to the misuse of insecticides and herbicides which might be associated with the high rate of cancer incidence in this region.

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Section: Resultssupporting

confidence: 70%

Study on Some Trace Element Contents in Serum and Nail Samples Obtained from Sudanese Subjects

Ebrahim¹,

Eltayeb²,

Benker³

et al. 2011

Biol Trace Elem Res

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“…It is not clear whether this is due to: (i) the free-radical scavenging nature of Se compounds; (ii) Se directly affecting As metabolism, perhaps through altering As methylation [68];or through the direct formation of As-Se compounds, such as seleno-bis (S-glutathionyl) arsinium [69]; or (iii) excretion patterns [70].…”

Section: Reviewmentioning

confidence: 99%

Selenium in higher plants: understanding mechanisms for biofortification and phytoremediation

Zhu¹,

Pilon-Smits²,

Zhao³

et al. 2009

Trends in Plant Science

508

347

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Selenium (Se) is an essential micronutrient for many organisms, including plants, animals and humans. As plants are the main source of dietary Se, plant Se metabolism is therefore important for Se nutrition of humans and other animals. However, the concentration of Se in plant foods varies between areas, and too much Se can lead to toxicity. As we discuss here, plant Se uptake and metabolism can be exploited for the purposes of developing high-Se crop cultivars and for plant-mediated removal of excess Se from soil or water. Here, we review key developments in the current understanding of Se in higher plants. We also discuss recent advances in the genetic engineering of Se metabolism, particularly for biofortification and phytoremediation of Se-contaminated environments. Selenium in the environmentThe metalloid selenium (Se) is ubiquitous in the environment, and its concentration in most soils ranges from 0.01 to 2.0 mg kg, with a mean of 0.4 mg kg -1 ; however, higher concentrations (>10 mg kg -1

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“…Arsenic also causes anemia (ATSDR 2007;Parish et al 1979), the severity of which indicates the extent of disruption to normal regulatory mechanisms exerted by macrophages and T-cells (Sathe et al 1990;Bogner et al 1990;Gascon et al 1993); and it also acts as an antagonist to selenium (Se), affecting its metabolism in vivo (Miyazaki et al 2003;Schrauzer 1987).…”

Section: Health Importance Of Arsenicmentioning

confidence: 99%

Health importance of arsenic in drinking water and food

Ötleş

Cagindi

2010

Environ Geochem Health

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Arsenic is a toxic metalloid of global concern. It usually originates geogenically but can be intensified by human activities such as applications of pesticides and wood preservatives, mining and smelting operations, and coal combustion. Arsenic-contaminated food is a widespread problem worldwide. Data derived from population-based studies, clinical case series, and case reports relating to ingestion of inorganic arsenic in drinking water, medications, or contaminated food or beverages show the capacity of arsenate and arsenite to adversely affect multiple organ systems. Chronic arsenic poisoning can cause serious health effects including cancers, melanosis (hyperpigmentation or dark spots, and hypopigmentation or white spots), hyperkeratosis (hardened skin), restrictive lung disease, peripheral vascular disease (blackfoot disease), gangrene, diabetes mellitus, hypertension, and ischemic heart disease.

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Negative Correlation between Urinary Selenium and Arsenic Levels of the Residents Living in an Arsenic-Contaminated Area in Bangladesh

Cited by 18 publications

References 14 publications

Study on Some Trace Element Contents in Serum and Nail Samples Obtained from Sudanese Subjects

Study on Some Trace Element Contents in Serum and Nail Samples Obtained from Sudanese Subjects

Selenium in higher plants: understanding mechanisms for biofortification and phytoremediation

Health importance of arsenic in drinking water and food

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