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Lei B, Wang X, Wang L, Kang Y, Wan T, Li W, Yang Q, Zhang J. Combining chemical analysis and toxicological methods to access the ecological risk of complex contamination in Daye Lake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173690. [PMID: 38825198 DOI: 10.1016/j.scitotenv.2024.173690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 05/14/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
As one of the nine primary non-ferrous metal smelting bases in China, Daye Lake basin was polluted due to diverse human activities. But so far the pollution status and related ecological risks of this region have not been detailly investigated. In current study, pollutants including heavy metals, polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in eight sediment samples from Daye Lake were quantified. 18S rRNA gene sequencing was employed to profile the nematode community structure within these sediments. Model organism Caenorhabditis elegans (C. elegans) were further applied for a comprehensive ecological risk assessment of Daye Lake. Notably, Cadmium (Cd) was identified as a key driver of ecological risk, reaching an index of 1287.35. At sample point S4, OCPs particularly p,p'-DDT, displayed an extreme ecological risk with a value of 23.19. Cephalobidae and Mononchida showed strong sensitivity to pollutant levels, reinforcing their suitability as robust bioindicators. The composite pollutants in sampled sediments caused oxidative stress in C. elegans, with gene Vit-2 and Mtl-1 as sensitive biomarkers. By employing the multiple analysis methods, our data can offer valuable contributions to environmental monitoring and health risk assessment for composite polluted areas.
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Affiliation(s)
- Bo Lei
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xin Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Ling Wang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yue Kang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Tianying Wan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Wenjuan Li
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Qingqing Yang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Jie Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
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2
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Li J, Cui D, Yang Z, Ma J, Liu J, Yu Y, Huang X, Xiang P. Health risk assessment of heavy metal(loid)s in road dust via dermal exposure pathway from a low latitude plateau provincial capital city: The importance of toxicological verification. ENVIRONMENTAL RESEARCH 2024; 252:118890. [PMID: 38615791 DOI: 10.1016/j.envres.2024.118890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/31/2024] [Accepted: 04/06/2024] [Indexed: 04/16/2024]
Abstract
The human health risk assessment through the dermal exposure of metal (loid)s in dust from low latitude and high geological background plateau cities was largely unknown. In this study, the road dust samples were harvested from a typical low-latitude plateau provincial capital city Kunming, Southwest China. The total concentration and dermal bioaccessibility of heavy metal (loid)s in road dust were determined, and their health risks as well as cytotoxicity on human skin keratinocytes were also assessed. The average concentrations of As (28.5 mg/kg), Cd (2.65 mg/kg), Mn (671 mg/kg), and Zn (511 mg/kg) exceeded the soil background values. Arsenic had the highest bioaccessibility after 2 h (3.79%), 8 h (4.24%), and 24 h (16.6%) extraction. The dermal pathway when bioaccessibility is considered has a higher hazard quotient than the conventional method using total metal(loid)s in the dust. In addition, toxicological verification suggested that the dust extracts suppressed the cell viability, increased the reactive oxygen species (ROS) level and DNA damage, and eventually activated the mitochondria-mediated apoptosis pathway, evidenced by the upregulation of Caspase-3/9, Bax, and Bak-1. Cadmium was positively correlated with the mRNA expression of Bax. Taken together, our data indicated that both dermal bioaccessibility and cytotoxicity should be considered for accurate human skin health risk assessment of heavy metal(loid)s in road dust, which may provide new insight for accurate human health risk assessment and environmental management.
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Affiliation(s)
- Jingya Li
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China
| | - Daolei Cui
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China
| | - Ziyue Yang
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China
| | - Jiaoyang Ma
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China
| | - Jianjun Liu
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Biomedical Engineering, Kunming Medical University, Kunming 650500, China
| | - Yingxin Yu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xianfeng Huang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Ping Xiang
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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3
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Xiao W, Zhang Y, Chen X, Sha A, Xiong Z, Luo Y, Peng L, Zou L, Zhao C, Li Q. The Easily Overlooked Effect of Global Warming: Diffusion of Heavy Metals. TOXICS 2024; 12:400. [PMID: 38922080 PMCID: PMC11209588 DOI: 10.3390/toxics12060400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/27/2024]
Abstract
Since industrialization, global temperatures have continued to rise. Human activities have resulted in heavy metals being freed from their original, fixed locations. Because of global warming, glaciers are melting, carbon dioxide concentrations are increasing, weather patterns are shifting, and various environmental forces are at play, resulting in the movement of heavy metals and alteration of their forms. In this general context, the impact of heavy metals on ecosystems and organisms has changed accordingly. For most ecosystems, the levels of heavy metals are on the rise, and this rise can have a negative impact on the ecosystem as a whole. Numerous studies have been conducted to analyze the combined impacts of climate change and heavy metals. However, the summary of the current studies is not perfect. Therefore, this review discusses how heavy metals affect ecosystems during the process of climate change from multiple perspectives, providing some references for addressing the impact of climate warming on environmental heavy metals.
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Affiliation(s)
- Wenqi Xiao
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Yunfeng Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Xiaodie Chen
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Ajia Sha
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Zhuang Xiong
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Yingyong Luo
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Lianxin Peng
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
| | - Changsong Zhao
- School of Public Health, Chengdu Medical College, Chengdu 610500, China
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (W.X.); (Y.Z.); (X.C.); (A.S.); (Z.X.); (Y.L.); (L.P.); (L.Z.)
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4
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Meng Z, Huang S, Zhao Q, Xin L. Respective evolution of soil and biochar on competitive adsorption mechanisms for Cd(II), Ni(II), and Cu(II) after 2-year natural ageing. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133938. [PMID: 38479140 DOI: 10.1016/j.jhazmat.2024.133938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/22/2024] [Accepted: 02/29/2024] [Indexed: 04/07/2024]
Abstract
To reveal the respective evolution of soil and biochar on competitive heavy metal adsorption mechanisms after natural ageing, three soils and two biochars were tested in this study. The soil-biochar interlayer samples were buried in the field for 0.5, 1, and 2 years, for which competitive adsorption characteristics and mechanisms of soils and biochars in four systems (Cd, Cd+Ni, Cd+Cu, and Cd+Ni+Cu) were investigated. Results showed that physicochemical properties, adsorption capacity and mechanisms of soils and biochars all changed the most in the first 0.5 years. The properties and adsorption capacity of biochars gradually weakened with the ageing time, meanwhile, those of soils gradually enhanced. After co-ageing with acidic soil for 0.5 years, the Cd(II) adsorption capacity of modified biochar decreased by 86.59% in the ternary system; meanwhile, that of acidic soil increased by 65.52%. The contributions of mineral mechanisms decreased significantly, while non-mineral mechanisms were slightly affected by ageing. This study highlighted that when using biochar to remediate heavy metal-contaminated soils, biochar should be applied at least half a year in advance before planting crops so that biochar can fully contact and react with the soil.
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Affiliation(s)
- Zhuowen Meng
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
| | - Shuang Huang
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China.
| | - Qin Zhao
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
| | - Lei Xin
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
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5
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Dong Q, Wu Y, Wang H, Li B, Huang R, Li H, Tao Q, Li Q, Tang X, Xu Q, Luo Y, Wang C. Integrated morphological, physiological and transcriptomic analyses reveal response mechanisms of rice under different cadmium exposure routes. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133688. [PMID: 38310845 DOI: 10.1016/j.jhazmat.2024.133688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/04/2024] [Accepted: 01/30/2024] [Indexed: 02/06/2024]
Abstract
Rice (Oryza sativa) is one of the major cereal crops and takes up cadmium (Cd) more readily than other crops. Understanding the mechanism of Cd uptake and defense in rice can help us avoid Cd in the food chain. However, studies comparing Cd uptake, toxicity, and detoxification mechanisms of leaf and root Cd exposure at the morphological, physiological, and transcriptional levels are still lacking. Therefore, experiments were conducted in this study and found that root Cd exposure resulted in more severe oxidative and photosynthetic damage, lower plant biomass, higher Cd accumulation, and transcriptional changes in rice than leaf Cd exposure. The activation of phenylpropanoids biosynthesis in both root and leaf tissues under different Cd exposure routes suggests that increased lignin is the response mechanism of rice under Cd stress. Moreover, the roots of rice are more sensitive to Cd stress and their adaptation responses are more pronounced than those of leaves. Quantitative PCR revealed that OsPOX, OsCAD, OsPAL and OsCCR play important roles in the response to Cd stress, which further emphasize the importance of lignin. Therefore, this study provides theoretical evidence for future chemical and genetic regulation of lignin biosynthesis in crop plants to reduce Cd accumulation.
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Affiliation(s)
- Qin Dong
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Yingjie Wu
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
| | - Haidong Wang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Bing Li
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Rong Huang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Huanxiu Li
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Qi Tao
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiquan Li
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoyan Tang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiang Xu
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Youlin Luo
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Changquan Wang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
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6
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Yang ZY, Liu H, Li JY, Bao YB, Yang J, Li L, Zhao ZY, Zheng QX, Xiang P. Road dust exposure and human corneal damage in a plateau high geological background provincial capital city: Spatial distribution, sources, bioaccessibility, and cytotoxicity of dust heavy metals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169140. [PMID: 38070561 DOI: 10.1016/j.scitotenv.2023.169140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/17/2023] [Accepted: 11/25/2023] [Indexed: 01/18/2024]
Abstract
Ocular surface diseases are common in the plateau city, Kunming China, the continued daily exposure to heavy metals in dust may be an important inducement. In this study, the 150 road dust samples from five functional areas in Kunming were collected. The concentrations, distribution, possible sources, and bioaccessibility of heavy metals were analyzed. The adverse effects of dust extracts on human corneal epithelial cells and the underlying mechanisms were also assessed. The concentrations (mg·kg-1) of As (19.1), Cd (2.67), Cr (90.5), Cu (123), Pb (78.4), and Zn (389) in road dust were higher than the soil background, with commercial and residential areas showing the highest pollution. Their bioaccessibility in artificial tears was As (6.59 %) > Cu (5.11 %) > Ni (1.47 %) > Cr (1.17 %) > Mn (0.84 %) > Cd (0.76 %) > Zn (0.50 %) > Pb (0.31 %). The two main sources of heavy metals included tire and mechanical abrasion (24.5 %) and traffic exhaust (21.6 %). All dust extracts induced cytotoxicity, evidenced by stronger inhibition of cell viability, higher production of ROS, and altered mRNA expression of antioxidant enzymes and cell cycle-related genes, with commercial- areas-2 (CA2)-dust extract showing the greatest oxidative damage and cell cycle arrest. Our data may provide new evidence that dust exposure in high geological background cities could trigger human cornea damage.
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Affiliation(s)
- Zi-Yue Yang
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Hai Liu
- Affiliated Hospital of Yunnan University, Eye Hospital of Yunnan Province, Kunming 650224, China
| | - Jing-Ya Li
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Ya-Bo Bao
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Ji Yang
- Affiliated Hospital of Yunnan University, Eye Hospital of Yunnan Province, Kunming 650224, China
| | - Li Li
- Precious Metal Testing Co. LTD of Yunnan Gold Mining Group, Kunming 650215, China
| | - Zi-Yu Zhao
- Precious Metal Testing Co. LTD of Yunnan Gold Mining Group, Kunming 650215, China
| | - Qin-Xiang Zheng
- The Affiliated Ningbo Eye Hospital of Wenzhou Medical University, Ningbo 315040, China.
| | - Ping Xiang
- Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China.
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Yu W, Zhu H, Huang R, Yan B, Xu B, Shi Y, Mao J, Liu Z, Wang J. Roles of Cyt-c/Caspase-9/Caspase-3/Bax/Bcl-2 pathway in Cd-induced testicular injury in rats and the protective effect of quercetin. Toxicon 2024; 237:107561. [PMID: 38092195 DOI: 10.1016/j.toxicon.2023.107561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/18/2023]
Abstract
Cadmium (Cd) exposure causes oxidative damage to mitochondria, which would adversely affect rat testicular tissue. Quercetin (Que) is a natural antioxidant with anti-inflammatory, antioxidant and anti-apoptotic effects. However, the mechanism by which Que inhibits Cd-induced apoptosis of testicular cells remains unclear. The purpose of this study was to investigate the role of mitochondrial apoptosis pathway (Cyt-c/Caspase-9/Caspase-3/Bax/Bcl-2 pathway) in inhibiting Cd-induced apoptosis of testicular cells by Que. We used SD rats to simulate Cd chloride exposure by treating all sides of the rats with CdCl2 and/or Que. The levels of GSH and MDA in rat testis were detected using reagent kits. The effects of CdCl2 and/or Que on tissue damage, apoptosis, and gene and protein expression of the Cyt-c/Caspase-9/Caspase-3/Bax/Bcl-2 pathway in rat testis were examined by HE, TUNEL, RNA extraction and reverse-transcriptase polymerase chain reaction (RT-PCR), and Western blot (Wb). The results show that Cd significantly increased the contents of GSH and MDA in rat testis (P < 0.01); conversely, Que significantly reduced the contents of GSH and MDA (P < 0.01). Cd inflicted damage to testicular tissue, and Que addition significantly reduced the damage. Cd increased the number of apoptosis of testicle cells, and Que inhibited testicle-cell apoptosis. In addition, the results of reverse transcription PCR and Wb assays confirmed that, as expected, Cd increased the expression levels of Cyt-c, Caspase-9, Caspase-3, and Bax mRNAs as well as proteins. And at the same time decreased the expression of the anti-apoptotic factor Bcl-2 in the cells. Surprisingly, these effects were reversed when Que was added. Therefore, Que can play an antioxidant and anti-apoptotic role in reducing the testicular tissue damage caused by Cd exposure. This provides a conceptual basis for the later development and utilization of Que as well as the prevention and treatment of tissue damage caused by Cd exposure.
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Affiliation(s)
- Wenjing Yu
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Huali Zhu
- Law Hospital, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Ruxue Huang
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Bingzhao Yan
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Bing Xu
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Yaning Shi
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Junbing Mao
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, No.12, East Wenhui Road, 225009, Yangzhou, PR China
| | - Jicang Wang
- College of Animal Science and Technology, Henan University of Science and Technology, No.263, Kaiyuan Avenue, 471023, Luoyang, PR China.
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Tian W, Zhang M, Zong D, Li W, Li X, Wang Z, Zhang Y, Niu Y, Xiang P. Are high-risk heavy metal(loid)s contaminated vegetables detrimental to human health? A study of incorporating bioaccessibility and toxicity into accurate health risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165514. [PMID: 37451464 DOI: 10.1016/j.scitotenv.2023.165514] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/03/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Heavy metal(loid)s in the environment threaten food safety and human health. Health risk assessment of vegetables based on total or bioaccessible heavy metal(loid)s was widely used but can overestimate their risks, so exploring accurate methods is urgent for food safety evaluation and management. In this study, a total of 224 frequently consumed vegetables and their corresponding grown soils were collected from Yunnan, Southwest China. The total contents and bioaccessibilities of heavy metal(loid)s in vegetables were measured, their health risks were evaluated using the non-carcinogenic and carcinogenic risk models provided by USEPA. Besides, the gastrotoxicity of high-risk vegetables was also evaluated using a human cell model. Results showed that 6.25-43.8 % of Cr, Cd, and Pb contents in Zea mays L., Coriandrum sativum L., or Allium sativum L. exceeded the maximum permissible level of China, which were not consistent with those in corresponding soils. The bioaccessibility of Cr, Cd, As, Pb, Cu, Zn, Ni, and Mn in vegetables in the gastric phase was 0.41-93.8 %. Health risks based on bioaccessibility were remarkably decreased compared with total heavy metal(loid)s, but the unacceptable carcinogenic risk (CR > 10-4) was found even considering the bioaccessibility. Interestingly, gastric digesta of high-risk vegetables did not trigger adverse effects on human gastric mucosa epithelial cells, indicating existing health risk assessment model should be adjusted by toxic data to accurately reflect its hazards. Taken together, both bioaccessibility and toxicity of heavy metal(loid)s in vegetables should be considered in accurate health risk assessment and food safety-related policy-making and management.
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Affiliation(s)
- Wen Tian
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Mengyan Zhang
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Dapeng Zong
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Weiyu Li
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China; Guangdong Key Laboratory of Contaminated Environmental Management and Remediation, Guangdong Provincial Academy of Environmental Science, Guangzhou 510000, China
| | - Xiaoying Li
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
| | - Zhenxing Wang
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China
| | - Yunxin Zhang
- Precious Metal Testing Co. LTD of Yunnan Gold Mining Group, Kunming 650215, China
| | - Youya Niu
- School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, China.
| | - Ping Xiang
- Yunnan Provincial Innovative Research Team of Environmental Pollution, Food Safety, and Human Health, Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China.
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9
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Sun J, Huang X, Song X, Tang R, Zhao M, Cai B, Wang H, Han Z, Liu Y, Fan Z. New insights into health risk assessment on soil trace metal(loid)s: Model improvement and parameter optimization. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131919. [PMID: 37402323 DOI: 10.1016/j.jhazmat.2023.131919] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/07/2023] [Accepted: 06/21/2023] [Indexed: 07/06/2023]
Abstract
Trace metal(loid)s (TMs) in soils may pose potential health risks to humans. Due to model uncertainty and variability of exposure parameters, the traditional health risk assessment (HRA) model may lead to inaccurate risk assessment results. Therefore, this study developed an improved HRA model to assess health risks by combining two-dimensional Monte Carlo simulation (2-D MCS) with a Logistic Chaotic sequence based on published data from 2000 to 2021. The results showed children and adult females were the high-risks populations for Non-carcinogenic risk and Carcinogenic risk, respectively. Meanwhile, children's Ingestion rate (IngR < 160.233 mg/day) and adult females' Skin adherence factor (0.026 mg/(cm2•d) < AF < 0.263 mg/(cm2•d)) were used as recommended exposure to make the health risk within acceptable range. Additionally, when performing risk assessment using actual exposure parameters, priority control TMs were identified, with As being the priority control TM for Southwest China and Inner Mongolia, whereas Cr and Pb for Tibet and Yunnan, respectively. Compared to health risk assessment, improved models increased risk assessment accuracy and provided recommended exposure parameter for high-risk populations. This study will provide new insights for soil-related health risk assessment.
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Affiliation(s)
- Jiaxun Sun
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Xinmiao Huang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Xiaoyong Song
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Rui Tang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Menglu Zhao
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Boya Cai
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Huijuan Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Zilin Han
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Yafeng Liu
- School of Resoureces and Environment, Anqing Normal University, Anqing 246133, China.
| | - Zhengqiu Fan
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
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