Geographic variation of environmental, food, and human hair selenium content in an industrial region of Russia

Skalny, Anatoly V.; Burtseva, T. I.; Salnikova, E.V.; Ajsuvakova, Olga P.; Skalnaya, Margarita G.; Kirichuk, Anatoly A.; Tinkov, Alexey A.

doi:10.1016/j.envres.2019.01.038

Cited by 21 publications

(12 citation statements)

References 69 publications

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“…According to the hierarchical cluster analysis, it is not difficult to find that in addition to increasing the intake of outsourced staple foods with high selenium contents, the consumption of various kinds of food also appears to be particularly important to improve selenium nutrition. Filippini also found that selenium intake was closely related to the frequency of consumption of meat, grains, milk and dairy products in a population survey of communities in northern Italy [38]. Based on the data in this study, if the FFQS' of a resident reaches 4.12, people can be considered to no longer be selenium deficient.…”

Section: Discussionsupporting

confidence: 51%

Selenium Nutritional Status of Rural Residents and Its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China

Wang

Yang

et al. 2020

Nutrients

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China is recognized as a selenium-deficient country, and nutritional selenium intake has always been a concern. To clarify the current inhabitants’ selenium nutrition status and the characteristics of dietary consumption in low-selenium areas, samples of human hair and grains were collected, and food frequency questionnaires were administered in Binxian County, Shaanxi Province, a typical low-selenium area in the Loess Plateau. The subject number of the study is 85, and the age range is from 11 to 81 years, with an average of 60. The results showed that the average hair selenium content of the residents was 231.7 μg/kg, and 62.4% of the participants had levels higher than the selenium deficiency threshold (200 μg/kg). There was a significant positive correlation between the hair selenium content and the food consumption score after adjusting for rice outsourcing. Three different dietary patterns were noted according to hierarchical cluster analysis. This study provides a tool for assessing the selenium nutrition of inhabitants in low-selenium areas and has considerable significance for improving the dietary pattern of residents.

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Section: Discussionsupporting

confidence: 51%

Selenium Nutritional Status of Rural Residents and Its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China

Wang

Yang

et al. 2020

Nutrients

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“…The human body intakes selenium mainly through food, and the selenium content of food extremely is influenced by external environmental selenium level (33). It has been well-demonstrated that the selenium levels of external environments (soil and foods) of the residents living in KD endemic areas had been low (7)(8)(9) and low selenium levels of the foods eventually leaded to selenium deficiency in the residents of the KD endemic areas (33,34). Therefore, the diets of foods rich in selenium should be still recommended for the residents of the KD endemic areas.…”

Section: Discussionmentioning

confidence: 99%

A County-Level Spatial Study of Serum Selenoprotein P and Keshan Disease

Jia

Wang

et al. 2022

Front. Nutr.

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BackgroundKeshan disease (KD) is strongly associated with selenium deficiency. Selenoprotein P (SELENOP) is a recognized molecular biomarker of selenoproteins and an important indicator of selenium nutrition. This study was aimed at providing geographically precisely visualized evidence of selenium nutrition at molecular level for assessing KD prevention, control, and elimination on the etiological perspective.MethodsWe used spatial ecological design for this study. The serum SELENOP levels of the residents were measured by ELISA. ArcGIS version 9.0 was used for spatial description, spatial autocorrelation analysis of SELENOP levels and spatial regression with per capita disposable income.ResultsThe mean serum SELENOP levels of the 6,382 residents in 1,688 counties were 4.62 ± 1.82 μg/mL. The mean serum SELENOP levels of the residents living in the townships and rural areas of KD endemic counties were not statistically significantly lower than those of the KD non-endemic counties. The mean serum SELENOP levels were globally clustered (Moran's I = 0.03, z = 6.37, and P < 0.0001), and 99.3% (553/557) of the cold spots, identified by local autocorrelation analysis (Getis-Ord-Gi* analysis), were located in the KD endemic provinces of Shaanxi, Shanxi, Henan, Hebei, Shandong, Inner Mongolia, Gansu, Hubei, Chongqing, Yunnan, and Sichuan. The serum SELENOP level was positively correlated with per capita disposable income (t = 3.52, P = 0.0004).ConclusionsThe results of this study were the geographically precisely visualized evidence of selenium nutrition at molecular level for assessing KD elimination on the etiological perspective. The cold spot counties found by Getis-Ord-Gi* analysis in the KD endemic provinces should be the high priority of KD precision prevention and control.

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“…However, the studied region (western Kazakhstan) is not among the biogeochemical provinces characterized by increased selenium content. Researchers have identified and described selenium-bearing areas in many parts of the world: the eastern part of Russia [ 55 ], China [ 56 ], Taiwan [ 57 ], Punjab [ 58 ], and Amazonia [ 59 ]. Their studies have assessed the relationship between chronic exposure to environmental selenium and human health.…”

Section: Discussionmentioning

confidence: 99%

“…However, in the present study, the increased level of selenium in the hair of residents from the oil and gas production zone within 0–16 km, compared with those living in zones at a distance of 16 to 110 km and more than 110 km, did not go beyond the reference values established by the laboratory ( Table 1 and Table 4 ). It may be associated with increased dietary intake of selenium-containing foods such as beef [ 56 ], fish [ 57 ], or white bread [ 55 ]. Some sources evidence a slight increase in the content of selenium in food (meat, dairy products, wheat) in the neighboring region of the Russian Federation [ 55 ].…”

Section: Discussionmentioning

confidence: 99%

Essential Trace Elements in Scalp Hair of Residents across the Caspian Oil and Gas Region of Kazakhstan

Umarova

Batyrova

Tlegenova

et al. 2022

Toxics

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Most of the country’s oil and gas fields are situated in West Kazakhstan, mainly on the Caspian Sea coast, causing significant damage to the local environment and contributing to an imbalance in the trace element composition of the human body. The study is aimed to evaluate the relationship between the concentration of essential trace elements in scalp hair of the western Kazakhstan adult population and the remoteness of their residence from oil and gas fields. The concentration of essential trace elements (Co, Cu, Fe, I, Mn, Se, Zn) in the hair of 850 individuals aged 18–60 years was determined by inductively coupled plasma mass spectrometry. In residents of settlements located at a distance of >110 km from oil and gas fields, the concentration of Cu and I in hair was significantly higher than in those closer to 110 km (p < 0.001). The content of Cu and I were associated with the distance to oil and gas fields (0.072 (95%CI: 0.050; 0.094)) and (0.121 (95%CI: 0.058; 0.185)), respectively. We detected a significant imbalance in the distribution of some essential trace elements in residents’ scalp hair from the Caspian region of western Kazakhstan, living near oil and gas fields. The concentrations of Cu and I were significantly interrelated with the distance to oil and gas fields. The level of copper in the hair of both inhabitants of the area most remote from oil and gas facilities and the entire population of western Kazakhstan as a whole remains significantly low. The data obtained provide evidence of the possible impact of pollutants generated by the oil and gas facilities on a shortage of essential trace elements and associated subsequent health risks.

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Geographic variation of environmental, food, and human hair selenium content in an industrial region of Russia

Cited by 21 publications

References 69 publications

Selenium Nutritional Status of Rural Residents and Its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China

Selenium Nutritional Status of Rural Residents and Its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China

A County-Level Spatial Study of Serum Selenoprotein P and Keshan Disease

Essential Trace Elements in Scalp Hair of Residents across the Caspian Oil and Gas Region of Kazakhstan

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