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He Y, Yu J, Yu N, Chen R, Wang S, Wang Q, Tao F, Sheng J. Association Between the Ratios of Selenium to Several Elements and Mild Cognitive Impairment in the Elderly. Biol Trace Elem Res 2022:10.1007/s12011-022-03527-6. [PMID: 36580211 DOI: 10.1007/s12011-022-03527-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/10/2022] [Indexed: 12/30/2022]
Abstract
To investigate the relationship between the correlation ratios of selenium (Se) and other elements and mild cognitive impairment (MCI) among older adults. A total of 1000 individuals participated in our research analysis. The concentrations of elements in whole blood were determined using inductively coupled plasma mass spectrometry to reflect their exposure levels. Participants' cognitive function was assessed using the Mini-Mental State Examination. Logistic regression analysis was used to evaluate the relationship between elemental ratios and MCI. Se concentration was positively correlated with red blood cell count (r = 0.219, p < 0.001), haemoglobin level (r = 0.355, p < 0.001), haematocrit (r = 0.215, p < 0.001), mean corpuscular haemoglobin (r = 0.294, p < 0.001) and mean corpuscular haemoglobin concentration (r = 0.428, p < 0.001) and negatively correlated with red cell volume distribution width-standard deviation (r = -0.232, p < 0.001) and platelet distribution width (r = -0.382, p < 0.001). Compared with the normal group, the ratios of Se/vanadium (V), Se/lead (Pb) and Se/cadmium (Cd) in the whole blood of the MCI group were significantly lower (all p < 0.001), while the ratios of manganese (Mn)/Se and iron (Fe)/Se were higher (all p < 0.001). The increase in the ratios of Se/V, Se/Pb and Se/Cd is related to a decreased risk of MCI among older adults; contrarily, an increase in the ratios of Mn/Se and Fe/Se may be a risk factor for MCI.
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Affiliation(s)
- Yu He
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Jinhui Yu
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Nannan Yu
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Rongrong Chen
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Sufang Wang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Qunan Wang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Fangbiao Tao
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
- MOE Key Laboratory of Population Health Across Life Cycle/Anhui Provincial Key Laboratory of Population Health and Aristogenics, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Jie Sheng
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China.
- MOE Key Laboratory of Population Health Across Life Cycle/Anhui Provincial Key Laboratory of Population Health and Aristogenics, No 81 Meishan Road, Hefei, 230032, Anhui, China.
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Li Z, Yuan Y, Ma L, Zhang Y, Jiang H, He J, Hu Y, Yuan S, Ginder-Vogel M, Tu S. Simultaneous Kinetics of Selenite Oxidation and Sorption on δ-MnO 2 in Stirred-Flow Reactors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:2902. [PMID: 33809051 PMCID: PMC7998768 DOI: 10.3390/ijerph18062902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022]
Abstract
Selenium (Se) is an essential and crucial micronutrient for humans and animals, but excessive Se brings negativity and toxicity. The adsorption and oxidation of Se(IV) on Mn-oxide surfaces are important processes for understanding the geochemical fate of Se and developing engineered remediation strategies. In this study, the characterization of simultaneous adsorption, oxidation, and desorption of Se(IV) on δ-MnO2 mineral was carried out using stirred-flow reactors. About 9.5% to 25.3% of Se(IV) was oxidized to Se(VI) in the stirred-flow system in a continuous and slow process, with the kinetic rate constant k of 0.032 h-1, which was significantly higher than the apparent rate constant of 0.0014 h-1 obtained by the quasi-level kinetic fit of the batch method. The oxidation reaction was driven by proton concentration, and its rate also depended on the Se(IV) influent concentration, flow rate, and δ-MnO2 dosage. During the reaction of Se(IV) and δ-MnO2, Mn(II) was produced and adsorbed strongly on Mn oxide surfaces, which was evidenced by the total reflectance Fourier transform infrared (ATR-FTIR) results. The X-ray photoelectron spectroscopy (XPS) data indicated that the reaction of Se(VI) on δ-MnO2 produced Mn(III) as the main product. These results contribute to a deeper understanding of the interface chemical process of Se(IV) with δ-MnO2 in the environment.
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Affiliation(s)
- Zheyong Li
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
| | - Yajun Yuan
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;
- Department of Environmental Engineering Design, Hubei Urban Construction Design Institute Co., Ltd., Wuhan 430051, China
| | - Lin Ma
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China;
| | - Yihui Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
| | - Hongwei Jiang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
| | - Jiqiang He
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
| | - Yifan Hu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
| | - Shoushu Yuan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Chenzhou Dongjiang Lake Water Environmental Protection Bureau, Chenzhou 423000, China
| | - Matthew Ginder-Vogel
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA;
| | - Shuxin Tu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; (Z.L.); (Y.Z.); (H.J.); (J.H.); (Y.H.); (S.Y.)
- Hubei Research Centre for Environment Pollution and Remediation, Wuhan 430070, China
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