Hair Selenium Content in Middle-Aged and Elderly Chinese Population

Li, Mengli; Yun, Hang; Huang, Jie; Wang, Jian; Wu, Wansheng; Guo, Remmei; Wang, Li

doi:10.1007/s12011-020-02482-4

Cited by 12 publications

(11 citation statements)

References 25 publications

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“…At the national level, the Se content in male hair was markedly higher than that in female hair ( p < 0.001). Likewise, a study conducted from 2018 to 2019 by Li et al, which aimed to evaluate Se levels in the hair of middle-aged and elderly populations from 15 provinces in China, also found that males had significantly higher levels than females ( p < 0.001). Additionally, higher levels of Se in the urine of males, as compared to that of females, were also found by Berglund et al…”

Section: Resultssupporting

confidence: 93%

“…While Se deficiency can cause KBD and KD, , excessive Se intake can also lead to adverse health effects, such as hair and nail loss, skin lesions, nervous system disorders, paralysis, and even death . In general, most participants (72%) of this study were classified as Se-sufficient, followed by Se-rich, Se-marginal, and Se-deficient (Table S5), consistent with the results of a survey of the middle-aged and elderly Chinese population . In particular, the Se concentrations in the hair of eight participants (0.67%) from EC and NW exceeded 3.00 μg/g, that is, they were classified as Se-excessive.…”

Section: Resultsmentioning

confidence: 59%

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Levels, Spatial Distribution, and Impact Factors of Heavy Metals in the Hair of Metropolitan Residents in China and Human Health Implications

Zheng

Tang

et al. 2021

Environ. Sci. Technol.

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Chronic exposure to low levels of heavy metals threatens human health. However, few studies evaluated the health effects and spatial distributions of chronic exposure to heavy metals in metropolitan residents throughout mainland China using unified sampling methods and evaluation indicators at the national level. Here, the concentrations and spatial distributions of heavy metals (As, Cd, Cr, Sb, Pb, and Hg) in the hair of 1202 metropolitan residents from mainland China were analyzed, and differences in age and sex were evaluated. Most target metals exhibited higher concentrations in the hair of residents from South Central China. Generally, male hair had higher As and Se concentrations, whereas female hair had higher Cd and Pb levels (p < 0.05). A significant pairwise correlation existed between most metals in hair, especially Cd–Pb (r = 0.638, p < 0.05). The Se/heavy metal molar ratio is used as an indicator to assess the detoxification ability. The results demonstrated that protecting metropolitan residents in South Central China from heavy metals in their daily life is crucial, particularly for Hg, Pb, and Cr with Se/(Hg, Pb, or Cr) molar ratios < 1. This is the first study to comprehensively consider the antagonistic effects of Se and heavy metals using the molar ratio of Se/heavy metals to evaluate health implications and propose health management policies for metropolitan residents in China.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 59%

Levels, Spatial Distribution, and Impact Factors of Heavy Metals in the Hair of Metropolitan Residents in China and Human Health Implications

Zheng

Tang

et al. 2021

Environ. Sci. Technol.

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“…Reviews and conference articles were also excluded from the analysis. As Li et al (2021) reported, middle-aged and elderly people was defined as people ≥45 years old. FMD).…”

Section: Search Strategymentioning

confidence: 99%

Effects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis

You

et al. 2022

Front. Physiol.

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BackgroundPrevious studies have found that aerobic exercise was more effective in improving vascular endothelial function than resistance training, high-intensity interval training (HIIT), and other types of exercise, while the effects between different intensities and durations of aerobic exercise were unclear. Therefore, we performed this meta-analysis to investigate the effects of different intensities and durations of aerobic exercise on the vascular endothelial function of middle-aged and elderly people.Methods:Databases were searched up to April 2021 for studies evaluating the influences of different intensities and durations of aerobic exercise on endothelial function assessed by flow-mediated dilation (FMD) among healthy middle-aged and elderly people. Data were pooled using random-effects models to obtain the weighted mean difference (WMD) and 95% confidence intervals (CIs).ResultsA total of 9 studies involving 221 participants fulfilled the inclusion criteria. Aerobic exercise improved the overall FMD of healthy middle-aged and elderly people [WMD, 1.33 (95% CI, 0.37–2.28), P < 0.05]. Specifically, vigorous-intensity exercise increased FMD significantly in healthy middle-aged and elderly people [WMD, 1.10 (95% CI, 0.27–1.93), P < 0.05], while moderate-intensity exercise had no significant association with FMD [WMD, 1.49 (95% CI, −0.62 to 3.60), P = 0.17]. In addition, long-term (8 weeks or above) aerobic exercise increased the FMD in healthy middle-aged and elderly people [WMD, 1.63 (95% CI, 0.61–2.66), P < 0.05], while one-time acute aerobic exercise had no significant association with FMD of healthy middle-aged and elderly people [WMD, 0.89 (95% CI, −1.47 to 3.24), P = 0.46]. Specifically, 8 weeks or above of vigorous-intensity exercise increased FMD significantly in healthy middle-aged and elderly people [WMD, 1.48 (95% CI, 1.06–1.90), P < 0.01], while 8 weeks or above of moderate aerobic exercise had no significant association with FMD [WMD, 1.49 (95% CI, −0.62 to 3.60), P = 0.17].ConclusionAerobic exercise, especially 8 weeks or above of vigorous-intensity aerobic exercise, improved the endothelial function in healthy middle-aged and elderly people.

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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%

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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Hair Selenium Content in Middle-Aged and Elderly Chinese Population

Cited by 12 publications

References 25 publications

Levels, Spatial Distribution, and Impact Factors of Heavy Metals in the Hair of Metropolitan Residents in China and Human Health Implications

Levels, Spatial Distribution, and Impact Factors of Heavy Metals in the Hair of Metropolitan Residents in China and Human Health Implications

Effects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis

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

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