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Gao M, Peng H, Zhao X, Xiao Z, Qiu W, Song Z. Effect of cadmium on polystyrene transport in parsley roots planted in a split-root system and assessment of the combined toxic effects. Sci Total Environ 2024; 924:171633. [PMID: 38471591 DOI: 10.1016/j.scitotenv.2024.171633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/20/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024]
Abstract
Micro and nanoplastics (MPs/NPs) coupled with heavy metals are prevalent in both aquatic and terrestrial ecosystems. Their ecological toxicity and combined adverse effects have obtained significant concern. Past studies primarily focused on how MPs/NPs influence the behavior of heavy metals. Yet, the possible effects of heavy metals on MP/NP transport and toxicity within co-contaminated systems are still not well-understood. In this study, we conducted split-root experiments to explore the transport and toxicity of polystyrene (PS) particles of varying sizes in parsley seedlings, both with and without the addition of cadmium (Cd). Both the PS-NPs (100 nm) and PS-MPs (300 nm) traveled from the PS-spiked roots (Roots-1) to the non-PS-spiked roots (Roots-2), with or without Cd, possibly because of phloem transport. Furthermore, the presence of Cd reduced the accumulation and movement of PS-NP/MP in the roots, likely due to the increased positive charge (Cd2+) on the PS surface. PS-NPs/MPs in both Roots-1 and Roots-2 were observed using transmission electron microscopy (TEM). When Cd was added to either Roots-1 (PS + Cd|H) or Roots-2 (PS|Cd), there was a minor reduction in the chlorophyll a and carotenoids content in leaves with PS|H. The adverse impacts of MPs|H on both indicators were influenced by the MP concentration. However, chlorophyll b significantly increased in the PS|H, PS + Cd|H, and PS|Cd treatments. Consequently, the chlorophyll a/b ratio declined, indicating inhibition of photosynthesis. The dehydrogenase content showed a minor change in Roots-1 and Roots-2 without Cd stress, whereas it significantly decreased on the Cd-spiked side and subsequently inhibited root growth. In contrast, the marked rise in glutathione (GSH) levels within Cd-spiked roots suggested, based on Gaussian analysis, that GSH and Cd chelation were instrumental in mitigating Cd toxicity. When Cd was introduced to both Roots-1 and Roots-2 simultaneously (PS + Cd|Cd), the aforementioned index showed a notable decline.
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Affiliation(s)
- Minling Gao
- College of Chemistry and Chemical Engineering (College of Carbon Neutrality Future Technology), Shantou University, No. 243 Daxue Road, Shantou, Guangdong Province 515063, China
| | - Hongchang Peng
- College of Chemistry and Chemical Engineering (College of Carbon Neutrality Future Technology), Shantou University, No. 243 Daxue Road, Shantou, Guangdong Province 515063, China
| | - Xuesong Zhao
- College of Chemistry and Chemical Engineering (College of Carbon Neutrality Future Technology), Shantou University, No. 243 Daxue Road, Shantou, Guangdong Province 515063, China
| | - Zhengzhen Xiao
- College of Chemistry and Chemical Engineering (College of Carbon Neutrality Future Technology), Shantou University, No. 243 Daxue Road, Shantou, Guangdong Province 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 3230, Hamilton 3240, New Zealand
| | - Zhengguo Song
- College of Chemistry and Chemical Engineering (College of Carbon Neutrality Future Technology), Shantou University, No. 243 Daxue Road, Shantou, Guangdong Province 515063, China.
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Gao M, Dong Y, Deng H, Qiu W, Song Z. Impact of microplastics on microbial-mediated soil sulfur transformations in flooded conditions. J Hazard Mater 2024; 468:133857. [PMID: 38402685 DOI: 10.1016/j.jhazmat.2024.133857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 02/27/2024]
Abstract
As emerging environmental pollutants, microplastics have become a crucial focus in environmental science research. Despite this, the impact of microplastics on soil in flooding conditions remains largely unexplored. Addressing this gap, our study examined the influence of polystyrene (PS) and polyphenylene sulfide (PPS) on the microbial populations in black soil, meadow soil, and paddy soil under flooded conditions. Given the significant regulatory influence exerted by microorganisms on sulfur transformations, our study was primarily focused on evaluating the microbial contributions to alterations in soil sulfur species. Our findings revealed several notable trends: In black soil, both PS and PPS led to a marked increase in the abundance of γ-proteobacteria and Subgroup_6, while reducing Clostridia. Ignavibacteria were found to be lower under PPS compared to PS. In meadow soil, the introduction of PPS resulted in increased levels of KD4-96 and γ-proteobacteria, while α-proteobacteria decreased. Chloroflexia under PPS was observed to be lower than under PS conditions. In paddy soil, our study identified a significant rise in Bacteroidia and Ignavibacteria, accompanied by a decrease in α-proteobacteria and γ-proteobacteria. γ-proteobacteria levels under PPS were notably higher than those under PS conditions. These shifts in microbial communities induced by both PS and PPS had a direct impact on adenosine 5'-phosphosulfate reductase, sulfite reductase, and polysulfide dioxygenase. Consequently, these changes led to soil organic sulfur decrease and sulfide increase. This study not only offers a theoretical framework but also provides empirical evidence for understanding the effects of microplastics on soil microorganisms and their role in regulating nutrient cycling, particularly in flood-prone conditions. Furthermore, this study underscores the importance of ensuring an adequate supply of sulfur in agricultural practices, such as rice and lotus root cultivation, to support optimal crop growth in the presence of microplastic pollution.
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Affiliation(s)
- Minling Gao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Youming Dong
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Hui Deng
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 3230, Hamilton 3214, New Zealand
| | - Zhengguo Song
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China.
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Dong Y, Gao M, Cai Q, Qiu W, Xiao L, Chen Z, Peng H, Liu Q, Song Z. The impact of microplastics on sulfur REDOX processes in different soil types: A mechanism study. J Hazard Mater 2024; 465:133432. [PMID: 38219596 DOI: 10.1016/j.jhazmat.2024.133432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 01/16/2024]
Abstract
Microplastics can potentially affect the physical and chemical properties of soil, as well as soil microbial communities. This could, in turn, influence soil sulfur REDOX processes and the ability of soil to supply sulfur effectively. However, the specific mechanisms driving these effects remain unclear. To explore this, soil microcosm experiments were conducted to assess the impacts of polystyrene (PS) and polyphenylene sulfide (PPS) microplastics on sulfur reduction-oxidation (REDOX) processes in black, meadow, and paddy soils. The findings revealed that PS and PPS most significantly decreased SO42- in black soil by 9.4%, elevated SO42- in meadow soil by 20.8%, and increased S2- in paddy soil by 20.5%. PS and PPS microplastics impacted the oxidation process of sulfur in soil by influencing the activity of sulfur dioxygenase, which was mediated by α-proteobacteria and γ-proteobacteria, and the oxidation process was negatively influenced by soil organic matter. PS and PPS microplastics impacted the reduction process of sulfur in soil by influencing the activity of adenosine-5'-phosphosulfate reductase, sulfite reductase, which was mediated by Desulfuromonadales and Desulfarculales, and the reduction process was positively influenced by soil organic matter. In addition to their impacts on microorganisms, it was found that PP and PPS microplastics directly influenced the structure of soil enzymes, leading to alterations in soil enzyme activity. This study sheds light on the mechanisms by which microplastics impact soil sulfur REDOX processes, providing valuable insights into how microplastics influence soil health and functioning, which is essential for optimizing crop growth and maximizing yield in future agricultural practices.
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Affiliation(s)
- Youming Dong
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Minling Gao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Qiqi Cai
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 3230, Hamilton 3240, New Zealand
| | - Ling Xiao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Zimin Chen
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Hongchang Peng
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Qinghai Liu
- Institute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, Tibet 850032, China
| | - Zhengguo Song
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China.
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Qiu W, Chou X, Shen Y, Ma KP, Sun DY, Min Z. [Correlation analysis of urinary arsenic species and health effect indicators of occupational arsenic exposure workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2024; 42:102-107. [PMID: 38403417 DOI: 10.3760/cma.j.cn121094-20230703-00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Objective: To explore the correlation between urinary arsenic and health effects through the determination and analysis of urinary arsenic levels in occupational arsenic exposed workers. Methods: In November 2021, 95 workers exposed to arsenic and its inorganic compounds and 31 administrative personnel from a non-ferrous metal smelter in Yunnan Province were selected as the contact group and control group, respectively. Urine forms of arsenic, blood tumor markers, liver function were detected, and micronucleus test was used to analyze the chromosome damage. The correlation between urine forms of arsenic and health effects were analyzed. Results: Compared with the control group, the concentrations of urinary trivalent inorganic arsenic (iAs(3+)) , pentavalent inorganic arsenic (iAs(5+)) , inorganic arsenic (iAs=ΣiAs(3+)+iAs(5+)) , monomethyl arsenic (MMA) , dimethyl arsenic (DMA) and urinary arsenic (ΣiAs+MMA+DMA) at the end of class in contact group were higher (P<0.05) . There was no statistically significant difference in blood tumor markers and liver function indicators between the two groups (P>0.05) . Compared with the control group, the peripheral blood micronucleus rate and cell micronucleus rate in the contact group were significantly increased (P<0.05) . The urinary arsenic, iAs(5+), inorganic arsenic and DMA were positively correlated with peripheral blood micronucleus rate in contact group (r(s)=0.48, 0.34, 0.37, 0.23, P<0.05) , and the urinary arsenic, iAs(5+), DMA were positively correlated with peripheral blood micronucleus rate (r(s)=0.48, 0.34, 0.26, P<0.05) . Conclusion: There is a significant correlation between different valence states of arsenic in the urine and abnormal health effects of occupational arsenic exposed workers. It is necessary to strengthen the detection of arsenic species in the urine of occupational arsenic exposed workers to better protect their health.
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Affiliation(s)
- W Qiu
- Occupational Medicine, The Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - X Chou
- Physical and Chemical Laboratory of Poisoning Department, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai 200433, China
| | - Y Shen
- Physical and Chemical Laboratory of Poisoning Department, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai 200433, China
| | - K P Ma
- Physical and Chemical Laboratory of Poisoning Department, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai 200433, China
| | - D Y Sun
- Physical and Chemical Laboratory of Poisoning Department, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai 200433, China
| | - Z Min
- Physical and Chemical Laboratory of Poisoning Department, Shanghai Pulmonary Hospital Affiliated to Tongji University, Shanghai 200433, China
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Dong Y, Gao M, Qiu W, Xiao L, Cheng Z, Peng H, Song Z. Investigating the impact of microplastics on sulfur mineralization in different soil types: A mechanism study. J Hazard Mater 2024; 464:132942. [PMID: 37992502 DOI: 10.1016/j.jhazmat.2023.132942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/19/2023] [Accepted: 11/04/2023] [Indexed: 11/24/2023]
Abstract
Microplastics can affect the physicochemical properties of soil and soil microorganisms, potentially resulting in changes in the soil sulfur mineralization and its capacity to supply available sulfur. However, the specific mechanisms underlying these effects remain unclear. We performed soil microcosm experiments, in which the effects of polystyrene (PS) and polyphenylene sulfide (PPS) microplastics on sulfur mineralization were examined in black, meadow, and paddy soils under flooded and dry conditions. Under dry condition, the presence of PS and PPS microplastics impeded sulfur (S) mineralization in black and paddy soils, but promoted sulfur mineralization in meadow soil. The size of microplastics was identified as the primary factor influencing sulfur mineralization in black soil, while in meadow soil, it was influenced by the microplastics type. In the case of paddy soil, the concentration of microplastics was the key factor affecting sulfur mineralization. During the flooding period, PS and PPS microplastics in black and paddy soils curtailed sulfur mineralization, however expedited sulfur mineralization in meadow soil, with PS enhancing soil sulfur mineralization more pronouncedly than PPS in black soil. The type and concentration of microplastics were identified as the main factors affecting sulfur mineralization in black soil, while in paddy soil, it was influenced by the size of microplastics. The principal regulating factors of soil sulfur mineralization were the sulphatase and arylsulfatase enzymes produced by Actinobacteria, Xanthomonadales, and Rhizobiales microorganisms, while organic matter and Olsen-P also had an influential role. Additionally, microplastics directly affected the structure of soil enzymes, thereby altering soil enzyme activities. This study provided insights into the mechanism by which microplastics affect soil sulfur mineralization, offering significant implications for assessing the influence of microplastics on soil sulfur availability and making informed decisions about sulfur application in future agricultural practices.
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Affiliation(s)
- Youming Dong
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Minling Gao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Ling Xiao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Zimin Cheng
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Hongchang Peng
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Zhengguo Song
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China.
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Gao M, Bai L, Xiao L, Peng H, Chen Q, Qiu W, Song Z. Micro (nano)plastics and phthalate esters drive endophytic bacteria alteration and inhibit wheat root growth. Sci Total Environ 2024; 906:167734. [PMID: 37827310 DOI: 10.1016/j.scitotenv.2023.167734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/11/2023] [Accepted: 10/08/2023] [Indexed: 10/14/2023]
Abstract
Endophytes play an important role in plant growth and stress tolerance, but limited information is available on the complex effects of micro (nano)plastics and phthalate esters (PAEs) on endophytes in terrestrial plants. To better elucidate the ecological response of endophytic bacteria on exogenous pollutants, a hydroponic experiment was conducted to examine the combined impact of polystyrene (PS) and PAEs on endophyte community structure, diversity, and wheat growth. The findings revealed that wheat roots were capable of absorbing and accumulating PS nanoparticles (PS-NPs, 0.1 μm), whereas PS microparticles (PS-MPs, 1 and 10 μm) merely adhered to the root surface. The addition of PAEs resulted in a stronger accumulation of fluorescent signal from PS-NPs in the roots. The dibutyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) were identified in wheat roots, and they could be metabolized to form minobutyl phthalate and phthalic acid, and mono-(2-ethylhexyl) phthalate, respectively. Compared to single PAEs, the concentration of PAEs and their metabolites in the roots treated with PS-NPs showed a great increase, while they exhibited a significant decline in the presence of PS-MPs. Principal coordinate analysis and permutational multivariate analysis of variance demonstrated that PS size were the major factor that induced oxidative damage, and altered the endogenous homeostasis of wheat roots. The increase in PS size positively promoted the relative abundance of dominant endophytes. Specifically, Proteobacteria. Proteobacteria were the most important in the symbiosis survival, which had a great impact on the microbial community and diversity. Therefore, PS and PAEs could affect the endophytes directly and indirectly. Structural equation modeling further implied that these endophytic bacteria, along with antioxidant enzymes such as superoxide dismutase which were regulated by non-enzymatic mechanisms, promoted root biomass increase. These results indicated a synergistic resistance mechanism between antioxidant enzymes and endophytic bacteria in response to environmental stress.
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Affiliation(s)
- Minling Gao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Linsen Bai
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Ling Xiao
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Hongchang Peng
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Qiaoting Chen
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, China.
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Zhu K, Menon BK, Qiu W. Response to Letter Regarding the Article "Automated Segmentation of Intracranial Thrombus on NCCT and CTA in Patients with Acute Ischemic Stroke Using a Coarse-to-Fine Deep Learning Model". AJNR Am J Neuroradiol 2023; 45:E1. [PMID: 38164534 PMCID: PMC10756572 DOI: 10.3174/ajnr.a8075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Affiliation(s)
- Kairan Zhu
- Department of Clinical Neurosciences & Hotchkiss Brain InstituteCumming School of Medicine, University of CalgaryCalgary, Alberta, Canada
- College of Electronic EngineeringXi'an Shiyou UniversityXi'an, Shaanxi, China
| | - B K Menon
- Department of Clinical Neurosciences & Hotchkiss Brain InstituteCumming School of Medicine, University of CalgaryCalgary, Alberta, Canada
| | - W Qiu
- School of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan, Hubei, China
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Gao J, Zhang X, Luo J, Zhu P, Lindsey S, Gao H, Li Q, Peng C, Zhang L, Xu L, Qiu W, Jiao Y. Changes in soil fertility under partial organic substitution of chemical fertilizer: a 33-year trial. J Sci Food Agric 2023; 103:7424-7433. [PMID: 37385969 DOI: 10.1002/jsfa.12819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/23/2023] [Accepted: 06/29/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND This study examined the changes in soil fertility in a maize cropping area when chemical fertilizer was partially replaced with straw or livestock manure over a 33-year period. Four treatments were included: (i) CK (no fertilizer application); (ii) NPK (only chemical fertilizer application); (iii) NPKM (chemical fertilizer partly replaced with livestock manure); (iv) NPKS (chemical fertilizer partly replaced with straw). RESULTS Soil organic carbon increased by 41.7% and 95.5% in the NPKS and NPKM treatments, respectively, over the 33-year trial compared with the initial concentration. However, soil organic carbon in NPK was significantly reduced by 9.8%. Soil total N, P and K increased in both NPKM and NPKS treatments compared to the original soil. Soil pH was significantly acidified from 7.6 to 5.97 in the NPK treatment during the experimental period. The NPKM and NPKS treatments buffered the acidification compared to NPK. Meta-analysis results showed that, compared with NPK, NPKM significantly raised soil bacteria and fungi populations by 38.7% and 58.6%; enhanced microbial biomass carbon and nitrogen by 66.3% and 63%, respectively; and increased sucrase, urease and catalase activities by 34.2%, 48.2% and 21.5%. NPKS significantly increased soil fungi and actinomycetes populations by 24.3% and 41.2%, respectively; enhanced microbial biomass carbon and nitrogen by 27.1% and 45%; and strengthened sucrase and urease activities by 36% and 20.3%, respectively. CONCLUSION Long-term chemical fertilizer application led to the deterioration of soil fertility and environment. Partial replacement of chemical fertilizers with organic materials could significantly amend and buffer such negative effects. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Jichao Gao
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Xiuzhi Zhang
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Jiafa Luo
- AgResearch Limited, Ruakura Research Centre, Hamilton, New Zealand
| | - Ping Zhu
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Stuart Lindsey
- AgResearch Limited, Ruakura Research Centre, Hamilton, New Zealand
| | - Hongjun Gao
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Qiang Li
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Chang Peng
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Lei Zhang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Lingying Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Weiwen Qiu
- Plant & Food Research, Private Bag 4704, Christchurch Mail Centre, Christchurch, New Zealand
| | - Yunfei Jiao
- Jilin Academy of Agricultural Sciences, Changchun, China
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Zhang T, Lei Q, Liang X, Lindsey S, Luo J, Pei W, Du X, Wu S, An M, Qiu W, Liu H. Optimization of the N footprint model and analysis of nitrogen pollution in irrigation areas: A case study of Ningxia Hui Autonomous Region, China. J Environ Manage 2023; 340:118002. [PMID: 37119631 DOI: 10.1016/j.jenvman.2023.118002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/19/2023] [Accepted: 04/21/2023] [Indexed: 05/12/2023]
Abstract
Water diverted from rivers for irrigation areas often contains large amounts of nitrogen (N), which is frequently overlooked and its role in contributing to N pollution is unknown. To investigate the influence of water diversion on N in different systems within irrigation areas, we developed and optimized the N footprint model, taking into account the N carried by irrigation water diversion and drainage in irrigated areas. This optimized model can serve as a reference for evaluating N pollution in other irrigated areas. By analyzing 29 years (1991-2019) of statistical data from a diverted irrigation area in Ningxia Hui Autonomous Region (Ningxia), China, the study assessed the contribution of water diversion to N in agriculture, animal husbandry, and human domestic activities. The results demonstrated that water diversion and drainage accounted for 10.3% and 13.8% in whole system, of the total N input and output in Ningxia, highlighting the potential N pollution risks associated with these activities. Additionally, the use of fertilizers in the plant subsystem, feed in the animal subsystem, and sanitary sewage in the human subsystem represented the main sources of N pollution in each subsystem. On a temporal scale, the study found that N loss increased year by year before reaching a stable level, indicating that N loss had reached its peak in Ningxia. The correlation analysis suggested that rainfall could regulate N input and output in irrigated areas by showing a negative correlation with water diversion, agricultural water consumption, and N from irrigated areas. Moreover, the study revealed that the amount of N brought by water diverted from rivers for irrigation should be taken into account when calculating the amount of fertilizer N required in the irrigation area.
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Affiliation(s)
- Tianpeng Zhang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qiuliang Lei
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Xia Liang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; School of Agriculture and Food, The University of Melbourne, Victoria, 3010, Australia
| | | | - Jiafa Luo
- AgResearch Ruakura, Hamilton, 3240, New Zealand
| | - Wei Pei
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xinzhong Du
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Shuxia Wu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Miaoying An
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant & Food Research Limited, Private Bag, 4704, Christchurch, New Zealand
| | - Hongbin Liu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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Chen Q, Gao M, Miao Q, Xiao L, Li Z, Qiu W, Song Z. Characteristics of a Novel Decomposed Corn Straw-Sludge Biochar and Its Mechanism of Removing Cadmium from Water. ACS Omega 2023; 8:24912-24921. [PMID: 37483186 PMCID: PMC10357432 DOI: 10.1021/acsomega.3c01196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/14/2023] [Indexed: 07/25/2023]
Abstract
The utilization of high-efficiency adsorption materials to reduce cadmium pollution in aquatic environments is the focus of current environmental remediation research. Straw waste and sludge, which are available in huge amounts, can be best utilized in the preparation of environmental remediation materials. In this study, six types of biochar (SBC, CBC, DBC, SD1BC, SRDBC, and SCDBC) were prepared from straw and sludge by co-pyrolysis, and their cadmium adsorption mechanisms were explored. Cd(II) adsorption isotherms and kinetics on the biochar were determined and fitted to different models. Kinetic modeling was used to characterize the Cd(II) adsorption of biochar, and findings revealed the process of sorption followed pseudo-second-order kinetics (R2 > 0.96). The Langmuir model accurately represented the isotherms of adsorption, indicating that the process was monolayer and controlled by chemical adsorption. SCDBC had the highest capacity for Cd(II) adsorption (72.2 mg g-1), 1.5 times greater than that of sludge biochar, and 3 times greater than that of corn straw biochar. As the pH level rose within the range of pH 5.0 to 7.0 and the ionic strength decreased, the adsorption capacity experienced an increase. SCDBC contained CaCO3 mineral crystals before Cd(II) adsorption, and CdCO3 was found in SCDBC after adsorbing Cd(II) via X-ray diffraction analysis; the peak of Cd could be observed by Fourier transform infrared spectroscopy after the adsorption of Cd(II). The possible adsorption of Cd(II) by SCDBC occurred primarily via surface complexation with active sorption sites, precipitation with inorganic anions, and coordination with π electrons. Collectively, the study suggested that the six types of biochar, particularly SCDBC, could be used as highly efficient adsorbents for Cd(II) removal from aquatic environments.
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Affiliation(s)
- Qiaoting Chen
- Department
of Material and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Minling Gao
- Department
of Material and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Qiyu Miao
- Department
of Material and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Ling Xiao
- Department
of Material and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Zhongyang Li
- Institute
of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Weiwen Qiu
- The
New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Guangdong
Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou 515063, China
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11
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Zhu K, Bala F, Zhang J, Benali F, Cimflova P, Kim BJ, McDonough R, Singh N, Hill MD, Goyal M, Demchuk A, Menon BK, Qiu W. Automated Segmentation of Intracranial Thrombus on NCCT and CTA in Patients with Acute Ischemic Stroke Using a Coarse-to-Fine Deep Learning Model. AJNR Am J Neuroradiol 2023; 44:641-648. [PMID: 37202113 PMCID: PMC10249699 DOI: 10.3174/ajnr.a7878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 04/20/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND PURPOSE Identifying the presence and extent of intracranial thrombi is crucial in selecting patients with acute ischemic stroke for treatment. This article aims to develop an automated approach to quantify thrombus on NCCT and CTA in patients with stroke. MATERIALS AND METHODS A total of 499 patients with large-vessel occlusion from the Safety and Efficacy of Nerinetide in Subjects Undergoing Endovascular Thrombectomy for Stroke (ESCAPE-NA1) trial were included. All patients had thin-section NCCT and CTA images. Thrombi contoured manually were used as reference standard. A deep learning approach was developed to segment thrombi automatically. Of 499 patients, 263 and 66 patients were randomly selected to train and validate the deep learning model, respectively; the remaining 170 patients were independently used for testing. The deep learning model was quantitatively compared with the reference standard using the Dice coefficient and volumetric error. The proposed deep learning model was externally tested on 83 patients with and without large-vessel occlusion from another independent trial. RESULTS The developed deep learning approach obtained a Dice coefficient of 70.7% (interquartile range, 58.0%-77.8%) in the internal cohort. The predicted thrombi length and volume were correlated with those of expert-contoured thrombi (r = 0.88 and 0.87, respectively; P < .001). When the derived deep learning model was applied to the external data set, the model obtained similar results in patients with large-vessel occlusion regarding the Dice coefficient (66.8%; interquartile range, 58.5%-74.6%), thrombus length (r = 0.73), and volume (r = 0.80). The model also obtained a sensitivity of 94.12% (32/34) and a specificity of 97.96% (48/49) in classifying large-vessel occlusion versus non-large-vessel occlusion. CONCLUSIONS The proposed deep learning method can reliably detect and measure thrombi on NCCT and CTA in patients with acute ischemic stroke.
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Affiliation(s)
- K Zhu
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- College of Electronic Engineering (K.Z.), Xi'an Shiyou University, Xi'an, Shaanxi, China
| | - F Bala
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - J Zhang
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - F Benali
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - P Cimflova
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- St. Anne's University Hospital Brno and Faculty of Medicine (P.C.), Masaryk University, Brno, Czech Republic
| | - B J Kim
- Department of Neurology and Cerebrovascular Center (B.J.K.), Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Korea
| | - R McDonough
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Diagnostic and Interventional Neuroradiology (R.M.), University Hospital Hamburg, Hamburg, Germany
| | - N Singh
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - M D Hill
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Community Health Sciences (M.D.H.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - M Goyal
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - A Demchuk
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - B K Menon
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - W Qiu
- School of Life Science and Technology (W.Q.), Huazhong University of Science and Technology, Wuhan, Hubei, China
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12
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Zhang M, Qiu W, An M, Sun Y, Zhang Z, Yu C. Analysis of the reports of low-concentration atropine in controlling myopia in children. J Fr Ophtalmol 2023; 46:239-248. [PMID: 36797093 DOI: 10.1016/j.jfo.2022.09.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 02/16/2023]
Abstract
PURPOSE To evaluate the efficacy of 0.01% atropine to slow the progression of myopia in children. METHODS We searched PubMed, Embase, ClinicalTrials.gov, CNKI, Cqvip and Wan fang databases from inception to January 2022, including RCTs (randomized controlled trials) and non-RCTs (non-randomized controlled trials). The search strategy was 'myopia' OR 'refractive error' and 'atropine.' Two researchers independently reviewed the articles, and stata12.0 was used for meta-analysis. The Jadad score was used to assess the quality of RCT, and the Newcastle-Ottawa scale was used for non-RCTs. RESULTS Five RCTs and two non-RCTs (1 prospective non-randomized controlled study, 1 retrospective cohort study) were identified (including 1000 eyes). Results of the meta-analysis showed statistical heterogeneity among the 7 included studies (P=0. 026, I2 =47.1%). According to different durations of atropine use - 4 months, 6 months and greater than 8 months, subgroup analysis results showed that the axial elongation of all experimental groups relative to control groups were respectively -0.03mm (95% [CI], (confidence interval), -0.07 to 0.01), -0.07mm (95% [CI], -0.10 to -0.05), -0.09mm (95% [CI], -0.12 to -0.06). Each P was greater than 0.05, which indicated that there is little heterogeneity among the subgroups. CONCLUSIONS In this meta-analysis of the short-term efficacy of atropine in myopia patients, it was found that there was little heterogeneity when grouped by usage time. It is suggested that the use of atropine in the treatment of myopia is not only related to its concentration but also related to the duration of use.
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Affiliation(s)
- M Zhang
- School of Basic Medical Sciences, Qingdao University, Qingdao 266071, China.
| | - W Qiu
- Qingdao Municipal Hospital, Qingdao, China.
| | - M An
- Qingdao Municipal Hospital, Qingdao, China.
| | - Y Sun
- School of Basic Medical Sciences, Qingdao University, Qingdao 266071, China.
| | - Z Zhang
- School of Basic Medical Sciences, Qingdao University, Qingdao 266071, China.
| | - C Yu
- School of Basic Medical Sciences, Qingdao University, Qingdao 266071, China.
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13
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Zhong Z, He P, Hua H, Bai H, Zhang H, Lu S, Qiu W, Gu Y, Qin X. Investigating the mechanism of interactive regulation of B-cell lymphoma-2/Beclin 1 through electroacupuncture intervention during reperfusion in myocardial ischemia-reperfusion injury in a rat model. J Physiol Pharmacol 2022; 73. [PMID: 37087569 DOI: 10.26402/jpp.2022.6.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 12/31/2022] [Indexed: 04/24/2023]
Abstract
To observe the regulation of B-cell lymphoma-2 (Bcl-2)/Beclin 1 interaction through electroacupuncture (EA) intervention during reperfusion and to investigate the EA mechanism of apoptosis-autophagy interactive regulation against myocardial ischemia-reperfusion injury (MIRI). A total of 48 adult Sprague Dawley (SD) rats were randomly divided into the sham-operated group (group Sham), the model group (group Model), the EA group (group EA), and the JNK inhibitor (SP600125) group (group JNK), with 12 rats in each group. Biospecimens were collected randomly from six rats in each group four hours after reperfusion. Evans Blue and triphenyl tetrazolium chloride double-staining were applied to observe each group's myocardial damage area and risk area. We collected 4 ml of blood by abdominal aortic method to detect serum troponin cTnI level by enzyme-linked immunosorbent assay (ELISA). For the remaining six in each group, a part of myocardial tissue below the ligation line was stored in 4% paraformaldehyde for immunohistochemistry and TUNEL staining; the other amount of myocardial tissue was detected by Western blotting to determine the expression levels of Bcl-2, Beclin1, and the phosphorylation levels of Thr69, Ser70, and Ser87 in Bcl-2. In results: electroacupuncture (EA) intervention during reperfusion significantly reduced the myocardial infarction area, cTnI level, and myocardial apoptosis, upregulated Bcl-2 expression, downregulated Beclin 1 expression and inhibited phosphorylation levels of Thr69, Ser70, and Ser87 in Bcl-2. We concluded that EA effectively inhibited apoptosis by upregulating Bcl-2 expression and inhibiting the phosphorylation of Thr69, Ser70, and Ser87 in Bcl-2. This reduced the separation of Bcl-2 and Beclin 1, restrains excessive autophagy, alleviates MIRI, and has a protective effect on myocardial tissue.
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Affiliation(s)
- Z Zhong
- Jiangyin Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangyin, China
| | - P He
- Jiangyin Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangyin, China
| | - H Hua
- Jiangyin Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangyin, China
| | - H Bai
- School of Acupuncture-Moxibustion and Tuina of Nanjing University of Traditional Chinese Medicine, Nanjing, China.
| | - H Zhang
- School of Acupuncture-Moxibustion and Tuina of Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - S Lu
- School of Acupuncture-Moxibustion and Tuina of Nanjing University of Traditional Chinese Medicine, Nanjing, China
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - W Qiu
- Jiangyin Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangyin, China
| | - Y Gu
- School of Acupuncture-Moxibustion and Tuina of Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - X Qin
- Traditional Chinese Medicine Hospital of Tongzhou District, Nantong, Jiangsu, China.
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14
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Dong Y, Bao Q, Gao M, Qiu W, Song Z. A novel mechanism study of microplastic and As co-contamination on indica rice (Oryza sativa L.). J Hazard Mater 2022; 421:126694. [PMID: 34332483 DOI: 10.1016/j.jhazmat.2021.126694] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/01/2021] [Accepted: 07/17/2021] [Indexed: 05/23/2023]
Abstract
Although the compound pollution of microplastics and arsenic (As) in paddy soil can affect the growth and quality of rice, relevant research on this phenomenon was limited. Therefore, we combined a pot experiment with computational chemistry to explore the effects and mechanism of polystyrene (PSMP) and polytetrafluoroethylene (PTFE) microplastics on As bioavailability. PSMP and PTFE interacted with rice root exudates through van der Waals forces, approached the rice root system, inhibited root activity, reduced the relative abundance of Geobacteria and Anaeromyxobacter, and consequently reduced the iron plaques on the root surfaces. Consequently, As uptake by the rice was inhibited. PSMP and PTFE reduced the hemoglobin content by directly destroying its tertiary structure, thereby retarding rice growth. In contrast, As increased the hemoglobin content by inducing reactive oxygen species in rice. Under the influence of PSMP, PTFE, and As, the activities of soluble starch synthase and pyrophosphorylase in rice grains were inhibited, and starch accumulation decreased. Thus, PSMP, PTFE, and As reduced rice biomass and yield owing to their physiological toxicity and adverse impacts on root activity. Grain yields in soil with an As content of 86.3 mg·kg-1, 0.5% small particle-sized PSMP, and 0.5% small particle-sized PTFE decreased by 30.7%, 20.6%, and 19.4%, respectively, compared to the control. This study determined the comprehensive mechanism through which PSMP and PTFE affect As bioavailability, which is critical for managing rice biomass and low yields in As and microplastic co-contaminated soil.
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Affiliation(s)
- Youming Dong
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs of China, Tianjin 300191, China
| | - Qiongli Bao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
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15
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Zhou Q, Zhu L, Qiu W, Liu Y, Yang F, Chen W, Xu R. Nicotinamide Riboside Enhances Mitochondrial Proteostasis and Adult Neurogenesis through Activation of Mitochondrial Unfolded Protein Response Signaling in the Brain of ALS SOD1 G93A Mice: Erratum. Int J Biol Sci 2022; 18:2181-2183. [PMID: 35342357 PMCID: PMC8935222 DOI: 10.7150/ijbs.71902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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16
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Ospel J, Bala F, McDonough R, Volny O, Kashani N, Qiu W, Menon B, Goyal M. Interrater Agreement and Detection Accuracy for Medium-Vessel Occlusions Using Single-Phase and Multiphase CT Angiography. AJNR Am J Neuroradiol 2022; 43:93-97. [PMID: 34824099 PMCID: PMC8757553 DOI: 10.3174/ajnr.a7361] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/22/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND PURPOSE Accurate and reliable detection of medium-vessel occlusions is important to establish the diagnosis of acute ischemic stroke and initiate appropriate treatment with intravenous thrombolysis or endovascular thrombectomy. However, medium-vessel occlusions are often challenging to detect, especially for unexperienced readers. We aimed to evaluate the accuracy and interrater agreement of the detection of medium-vessel occlusions using single-phase and multiphase CTA. MATERIALS AND METHODS Single-phase and multiphase CTA of 120 patients with acute ischemic stroke (20 with no occlusion, 44 with large-vessel occlusion, and 56 with medium-vessel occlusion in the anterior and posterior circulation) were assessed by 3 readers with varying levels of experience (session 1: single-phase CTA; session 2: multiphase CTA). Interrater agreement for occlusion type (large-vessel occlusion versus medium-vessel occlusion versus no occlusion) and for detailed occlusion sites was calculated using the Fleiss κ with 95% confidence intervals. Accuracy for the detection of medium-vessel occlusions was calculated for each reader using classification tables. RESULTS Interrater agreement for occlusion type was moderate for single-phase CTA (κ = 0.58; 95% CI, 0.56-0.62) and almost perfect for multiphase CTA (κ = 0.81; 95% CI, 0.78-0.83). Interrater agreement for detailed occlusion sites was moderate for single-phase CTA (κ = 0.55; 95% CI, 0.53-0.56) and substantial for multiphase CTA (κ = 0.71; 95% CI, 0.67-0.74). On single-phase CTA, readers 1, 2, and 3 classified 33/56 (59%), 34/56 (61%), and 32/56 (57%) correctly as medium-vessel occlusions. On multiphase CTA, 48/56 (86%), 50/56 (89%), and 50/56 (89%) medium-vessel occlusions were classified correctly. CONCLUSIONS Interrater agreement for medium-vessel occlusions is moderate when using single-phase CTA and almost perfect with multiphase CTA. Detection accuracy is substantially higher with multiphase CTA compared with single-phase CTA, suggesting that multiphase CTA might be a valuable tool for assessment of medium-vessel occlusion stroke.
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Affiliation(s)
- J.M. Ospel
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.),Department of Radiology (J.M.O.), University Hospital of Basel, Basel, Switzerland
| | - F. Bala
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.)
| | - R.V. McDonough
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.)
| | - O. Volny
- Czech National Centre for Evidence-Based Healthcare and Knowledge Translation (O.V.), Masaryk University, Brno, Czech,Department of Neurology (O.V.), University Hospital Ostrava, Ostrava, Czech
| | - N. Kashani
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.),Department of Clinical Neurosciences (N.K., B.K.M., M.G.), University of Calgary, Calgary, Alberta, Canada
| | - W. Qiu
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.)
| | - B.K. Menon
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.),Department of Clinical Neurosciences (N.K., B.K.M., M.G.), University of Calgary, Calgary, Alberta, Canada
| | - M. Goyal
- From the Department of Diagnostic Imaging (J.M.O., F.B., R.V.M., N.K., W.Q., B.K.M., M.G.),Department of Clinical Neurosciences (N.K., B.K.M., M.G.), University of Calgary, Calgary, Alberta, Canada
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17
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Dong Y, Gao M, Qiu W, Song Z. The influence of humic and fulvic acids on polytetrafluoroethylene-adsorbed arsenic: a mechanistic study. Environ Sci Pollut Res Int 2021; 28:64503-64515. [PMID: 34308520 DOI: 10.1007/s11356-021-15376-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
The large-scale use of polytetrafluoroethylene has resulted in ever-increasing amounts of polytetrafluoroethylene (PTFE) microplastic particles entering the environment. Given that the environment is polluted with arsenic (As(III)), and that the environment contains significant levels of humic acid (HA) and fulvic acid (FA), how PTFE and As(III) in water interacting in the presence of HA and FA needs to be urgently investigated. The results showed that As(III) was adsorbed by PTFE in the presence of HA and FA more markedly than the absence of them Adsorption equilibrium was reached at approximately 960 min and the adsorption isotherms were found to be best fitted by the Toth model. An increase in temperature was found to destroy hydrogen bonds, resulting in inhibited, non-spontaneous adsorption; a higher pH inhibited adsorption in the range 3-7. Computational and mechanistic studies revealed that PTFE formed π complexes with HA units, which increased the number of oxygen-containing functional groups on its surface. The surface of the PTFE-HA π complex was mostly negatively charged; however, the hydrogen atoms of the hydroxyl and carboxylic acid groups exhibited large positive potentials that enabled the adsorption of As(III). When the oxygen atom on As was close to the oxygen-containing functional group on PTFE-HA, the more electronegative oxygen atom forms a special intermolecular interaction in the form of O-H···O through the medium of hydrogen, which makes As adsorb on the surface of PTFE. Pore filling, hydrogen bonding, and covalent bonding are the main ways in which PTFE adsorbs As(III) in the presence of HA and FA. PTFE also adsorbed more As(III) in the presence of HA than in the presence of FA.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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18
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Zhou Q, Yuan M, Qiu W, Cao W, Xu R. Preclinical studies of mesenchymal stem cells transplantation in amyotrophic lateral sclerosis: a systemic review and metaanalysis. Neurol Sci 2021; 42:3637-3646. [PMID: 33433755 DOI: 10.1007/s10072-020-05036-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 12/31/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To assess the quality of preclinical evidence for mesenchymal stromal cell (MSCs) therapy of amyotrophic lateral sclerosis (ALS), decide the effect size of MSCs treatment, and identify clinical parameters that associate with differences in MSCs effects. METHODS A literature search identified studies of MSCs in animal models of ALS. Four main indicators (age of onset, disease progression deceleration, survival time, hazard ratio reduction) obtained through specific neurobehavioral assessment, and 14 relative clinical parameters were extracted for metaanalysis and systematic review. Subgroup analysis and metaregression were performed to explore sources of heterogeneity. RESULTS A total of 25 studies and 41 independent treated arms were used for systematic review and metaanalysis. After adjusted by sensitivity analysis, the mean effect sizes were significantly improved by 0.28 for the age of onset, 0.25 for the disease progression deceleration, 0.54 for the survival time, and 0.48 for hazard ratio reduction. With further analysis, we demonstrated that both the clinical parameter of animal gender and immunosuppressive drug of cyclosporin A (CSA) had a close correlation with disease progression deceleration effect size. CONCLUSIONS These results showed that MSCs transplantation was beneficial for neurobehavioral improvement in the treatment of ALS animal model and recommended that all potential reparative roles of MSCs postdelivery, should be carefully considered and fused to maximize the effectiveness of MSCs therapy in ALS.
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Affiliation(s)
- Qi Zhou
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, No. 152, Aiguo Road, Nanchang, 330006, Jiangxi, China
| | - Min Yuan
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, No. 152, Aiguo Road, Nanchang, 330006, Jiangxi, China
| | - Weiwen Qiu
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, No. 152, Aiguo Road, Nanchang, 330006, Jiangxi, China
| | - Wenfeng Cao
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, No. 152, Aiguo Road, Nanchang, 330006, Jiangxi, China.
| | - Renshi Xu
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, No. 152, Aiguo Road, Nanchang, 330006, Jiangxi, China.
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Lin L, Gao M, Liu X, Qiu W, Song Z. Effect of Fe-Mn-La-modified biochar composites on arsenic volatilization in flooded paddy soil. Environ Sci Pollut Res Int 2021; 28:49889-49898. [PMID: 33948836 DOI: 10.1007/s11356-021-14115-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
As can be volatilized naturally; however, this has adverse environmental effects. In this study, we investigated As volatilization in flooded paddy soil with the addition of biochar (BC) and Fe-Mn-La-modified BC composites (FMLBCs). The addition of BC and FMLBCs caused decreases in total As volatilization in the soil over 7 weeks. Maximum volatilization was achieved in the third week followed by stabilization. Volatilization decreased by 21.9%, 18.8%, 20.8%, and 31.1% with the addition of BC, FMLBC1, FMLBC2, and FMLBC3 (BC/Fe/Mn/La weight ratios different), respectively, in lightly contaminated soil, and by 15.2%, 20.5%, 17.6%, and 25.4%, respectively, in highly contaminated soil. The FMLBCs decreased the exchangeable As fractions and increased the non-swappable As in the soil. Furthermore, the addition of FMLBCs significantly reduced the As(III) concentration in a suspended solution (P < 0.05), whereas no significant changes were observed in the As(V) or methyl arsenic acid concentrations. Soil enzyme activity increased and the relative abundances of Proteobacteria and Actinobacteria changed with the addition of FMLBCs. Therefore, the mechanism by which FMLBCs affected As volatilization likely included the following two aspects: (1) FMLBCs affected the transformation and distribution of soil As and decreased As dissolution, crystallization, and methylation; (2) FMLBCs influenced soil properties, which directly affected microorganism activity, thereby affecting As volatilization. FMLBCs therefore can decrease As volatilization properties and be used to control As volatilization in As-contaminated paddy soils.
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Affiliation(s)
- Lina Lin
- College of Agriculture and Bioengineering (College of Tree Peony), Heze University, Heze, 274015, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Xuewei Liu
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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20
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Zhang J, Qiu W, Hu F, Zhang X, Deng Y, Nie H, Xu R. The rs2619566, rs10260404, and rs79609816 Polymorphisms Are Associated With Sporadic Amyotrophic Lateral Sclerosis in Individuals of Han Ancestry From Mainland China. Front Genet 2021; 12:679204. [PMID: 34421992 PMCID: PMC8378233 DOI: 10.3389/fgene.2021.679204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/25/2021] [Indexed: 11/21/2022] Open
Abstract
The pathogenesis of sporadic amyotrophic lateral sclerosis (sALS) remains unknown; however, recent research suggests that genetic factors may play an important role. This study aimed at investigating possible genetic risk factors for the pathogenesis of sALS. In our previous study, we conducted a genome-wide association study (GWAS) in 250 sALS patients and 250 control participants of Han ancestry from mainland China (HACM) and retrospectively analyzed the previously reported candidate loci related with sALS including our GWAS investigated results. In this study, twenty-seven candidate loci that were most likely associated with sALS were selected for further analysis in an independent case/control population of 239 sALS patients and 261 control subjects of HACM ethnicity using sequenom massARRAY methodology and DNA sequencing. We discovered that the polymorphism rs2619566 located within the contactin-4 (CNTN4) gene, rs10260404 in the dipeptidyl-peptidase 6 (DPP6) gene, and rs79609816 in the inositol polyphosphate-5-phosphatase B (INPP5B) gene were strongly associated with sALS in subjects of HACM ethnicity. Subjects harboring the minor C allele of rs2619566 and the minor T allele of rs79609816 exhibited an increased risk for sALS development, while carriers of the minor C allele of rs10260404 showed a decreased risk of sALS development compared to the subjects of other genotypes. The polymorphisms of rs2619566, rs10260404, and rs79609816 may change or affect the splicing, transcription, and translation of CNTN4, DPP6, and INPP5B genes and may play roles in the pathogenesis of sALS roles in the pathogenesis of sALS.
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Affiliation(s)
- Jie Zhang
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Weiwen Qiu
- Department of Neurology, The Affiliated People's Hospital of Nanchang University, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Fan Hu
- Department of Neurology, The Affiliated People's Hospital of Nanchang University, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Xiong Zhang
- Department of Neurology, Maoming People's Hospital, Maoming, China
| | - Youqing Deng
- Department of Neurology, The Third Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongbing Nie
- Department of Neurology, The Affiliated People's Hospital of Nanchang University, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Renshi Xu
- Department of Neurology, The Affiliated People's Hospital of Nanchang University, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, China
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21
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Khan ZH, Gao M, Qiu W, Song Z. Mechanism of novel MoS 2-modified biochar composites for removal of cadmium (II) from aqueous solutions. Environ Sci Pollut Res Int 2021; 28:34979-34989. [PMID: 33661497 DOI: 10.1007/s11356-021-13199-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
The purpose of this study was to develop a MoS2-impregnated biochar (MoS2@BC) via hydrothermal reaction for adsorption of cadmium (Cd) from an aqueous solution. The prepared adsorbents were characterized, and their abilities to remove Cd(II) were evaluated. The Langmuir and pseudo-second-order models better described the removal of Cd(II) by MoS2@BC. The prepared MoS2@BC exhibited excellent monolayer adsorption capacity. The S-containing functional groups on MoS2@BC enhanced the adsorption of Cd(II). Multiple Cd(II) sorption mechanisms were identified; including Cd(II)-π interactions, ion exchange, electrostatic interaction, and complexation. The dominant mechanism involved Cd-O (38.3%) bonds and Cd-S complexation (61.7%) on MoS2@BC. The as-prepared MoS2@BC is both economical and efficient, making it an excellent material for environmental Cd(II) remediation.
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Affiliation(s)
- Zulqarnain Haider Khan
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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22
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Ospel JM, Hill MD, Menon BK, Demchuk A, McTaggart R, Nogueira R, Poppe A, Haussen D, Qiu W, Mayank A, Almekhlafi M, Zerna C, Joshi M, Jayaraman M, Roy D, Rempel J, Buck B, Tymianski M, Goyal M. Strength of Association between Infarct Volume and Clinical Outcome Depends on the Magnitude of Infarct Size: Results from the ESCAPE-NA1 Trial. AJNR Am J Neuroradiol 2021; 42:1375-1379. [PMID: 34167959 DOI: 10.3174/ajnr.a7183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/17/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Infarct volume is an important predictor of clinical outcome in acute stroke. We hypothesized that the association of infarct volume and clinical outcome changes with the magnitude of infarct size. MATERIALS AND METHODS Data were derived from the Safety and Efficacy of Nerinetide in Subjects Undergoing Endovascular Thrombectomy for Stroke (ESCAPE-NA1) trial, in which patients with acute stroke with large-vessel occlusion were randomized to endovascular treatment plus either nerinetide or a placebo. Infarct volume was manually segmented on 24-hour noncontrast CT or DWI. The relationship between infarct volume and good outcome, defined as mRS 0-2 at 90 days, was plotted. Patients were categorized on the basis of visual grouping at the curve shoulders of the infarct volume/outcome plot. The relationship between infarct volume and adjusted probability of good outcome was fitted with linear or polynomial functions as appropriate in each group. RESULTS We included 1099 individuals in the study. Median infarct volume at 24 hours was 24.9 mL (interquartile range [IQR] = 6.6-92.2 mL). On the basis of the infarct volume/outcome plot, 4 infarct volume groups were defined (IQR = 0-15 mL, 15.1-70 mL, 70.1-200 mL, >200 mL). Proportions of good outcome in the 4 groups were 359/431 (83.3%), 219/337 (65.0%), 71/201 (35.3%), and 16/130 (12.3%), respectively. In small infarcts (IQR = 0-15 mL), no relationship with outcome was appreciated. In patients with intermediate infarct volume (IQR = 15-200 mL), there was progressive importance of volume as an outcome predictor. In infarcts of > 200 mL, outcomes were overall poor. CONCLUSIONS The relationship between infarct volume and clinical outcome varies nonlinearly with the magnitude of infarct size. Infarct volume was linearly associated with decreased chances of achieving good outcome in patients with moderate-to-large infarcts, but not in those with small infarcts. In very large infarcts, a near-deterministic association with poor outcome was seen.
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Affiliation(s)
- J M Ospel
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada.,Department of Radiology (J.M.O.), University Hospital of Basel, Basel, Switzerland
| | - M D Hill
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada.,Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
| | - B K Menon
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada.,Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
| | - A Demchuk
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada.,Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
| | - R McTaggart
- Department of Interventional Radiology (R.M., M. Jayaraman), Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - R Nogueira
- Department of Neurology (R.N., D.H.), Emory University School of Medicine, Atlanta, Georgia
| | - A Poppe
- Centre Hospitalier de l'Université de Montréal (A.P., D.R.), Montreal, Quebec, Canada
| | - D Haussen
- Department of Neurology (R.N., D.H.), Emory University School of Medicine, Atlanta, Georgia
| | - W Qiu
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada
| | - A Mayank
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada
| | - M Almekhlafi
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada.,Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
| | - C Zerna
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada
| | - M Joshi
- Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
| | - M Jayaraman
- Department of Interventional Radiology (R.M., M. Jayaraman), Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - D Roy
- Centre Hospitalier de l'Université de Montréal (A.P., D.R.), Montreal, Quebec, Canada
| | - J Rempel
- University of Alberta Hospital (J.R., B.B.), Edmonton, Alberta, Canada
| | - B Buck
- University of Alberta Hospital (J.R., B.B.), Edmonton, Alberta, Canada
| | | | - M Goyal
- Department of Clinical Neurosciences (J.M.O., M.D.H., B.K.M., A.D., W.Q., A.M., M.A., C.Z., M.G.), University of Calgary, Calgary, Alberta, Canada .,Department of Radiology (M.D.H., B.K.M., A.D., M.A., M. Joshi, M.G.), University of Calgary, Calgary, Alberta, Canada
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23
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Dong Y, Gao M, Qiu W, Song Z. Uptake of microplastics by carrots in presence of As (III): Combined toxic effects. J Hazard Mater 2021; 411:125055. [PMID: 33482507 DOI: 10.1016/j.jhazmat.2021.125055] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/25/2020] [Accepted: 01/04/2021] [Indexed: 05/06/2023]
Abstract
Current research on the migration of microplastics into plants is in its most important phase; however, there is no such research on root vegetables, even though the edible parts of root vegetables are in direct contact with microplastics. Considering arsenic (As)-containing groundwater used in hydroponics and the degradation of plastic materials in hydroponic facilities, we investigated the impacts of As and polystyrene (PS) microplastics on carrot growth. We found that PS microplastics sized 1 µm can enter carrot roots and accumulate in the intercellular layer but are unable to enter the cells; those sized 0.2 µm can migrate to the leaves. Larger microplastics can enter the roots (PS particles sized 1219.7 nm) and leaves (607.2 nm) in presence of As (III). Gaussian analysis shows that As increases the negatively charged area of PS and causes a greater amount of microplastics to enter the carrot. As also causes cell walls to distort and deform, allowing PS particles (< 200 nm) to enter the cells. PS and 4 mg L-1 As can induce oxidative bursts in carrot tissue, reducing the carrot quality. Moreover, As exacerbates the effect of PS on carrots. Molecular docking results show that the presence of PS in carrots destroys the tertiary structure of pectin methyl esterase and causes carrots to lose their crispness. These findings indicate that plastic material in hydroponic facilities can be leached to crops. Microplastics produced by the degradation of such materials not only reduce the nutritional value of carrots, leading to economic losses, but also pose potential risks to human health. The presence of As in the hydroponic solution results in more PS entering the carrot tissue and even the cells, bringing greater health threats for the consumers.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
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24
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Dong Y, Gao M, Qiu W, Song Z. Effect of microplastics and arsenic on nutrients and microorganisms in rice rhizosphere soil. Ecotoxicol Environ Saf 2021; 211:111899. [PMID: 33453641 DOI: 10.1016/j.ecoenv.2021.111899] [Citation(s) in RCA: 121] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/19/2020] [Accepted: 01/03/2021] [Indexed: 06/12/2023]
Abstract
The presence of microplastics and arsenic in soil can endanger crop growth; therefore, their effects on the properties of rhizosphere soil should be evaluated. Large (10-100 µm) and small (0.1-1 µm) polystyrene (PSMP) and polytetrafluorethylene (PTFE) particles were added to soil with different arsenic concentrations (1.4, 24.7, and 86.3 mg kg-1) to investigate the combined effect of microplastics and arsenic pollution on rice rhizosphere soil. After the addition of PSMP and PTFE, pH, arsenic (V) and arsenic (III) in the soil were observed to decrease. The interaction of arsenic with PSMP and PTFE resulted in this phenomenon, leading to a decrease of arsenic bioavailability in the soil. PSMP, PTFE, and arsenic reduced the abundance of Proteobacteria, increased the abundance of Chloroflexi and Acidobacteria, and inhibited soil urease, acid phosphatase, protease, dehydrogenase, and peroxidase activity via affecting the tertiary structure of the enzyme. PSMP, PTFE, and arsenic also reduced the available nitrogen and phosphorus content in the soil. Arsenic increased the soil organic matter content, whereas PSMP and PTFE reduced the organic matter content. Furthermore, microplastics inhibited the effects of arsenic on the microbial and chemical properties of the rhizosphere soil. This study revealed the effects of microplastic and arsenic pollution on rice rhizosphere microorganisms and nutrients, and elucidated the mechanism by which these pollutants retard crop growth in the designed growth medium.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
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25
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Dong Y, Gao M, Qiu W, Song Z. Effects of microplastic on arsenic accumulation in Chlamydomonas reinhardtii in a freshwater environment. J Hazard Mater 2021; 405:124232. [PMID: 33087286 DOI: 10.1016/j.jhazmat.2020.124232] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Chlamydomonas reinhardtii plays a critical role in the biogeochemical cycling of arsenic (As) and purification of water bodies contaminated with As. We investigated the effects of microplastic pollution on the ability of C. reinhardtii to accumulate As. We revealed that different sized [100 nm (S) and 5 µm (L)] polystyrene microplastics (PSMP) at different concentrations (50 and 100 mg L-1) interacted with the phospholipid structure in C. reinhardtii. Dispersion forces disrupted the structure and function of membrane proteins, reducing the accumulation and efflux of As(III) and inhibiting the As(V)-As(III)-MMA-DMA detoxification process in C. reinhardtii cells. The maximum As accumulation rates of C. reinhardtii in the control groups, L50, L100, S50, and S100 treatments were 53.71, 50.95, 48.42, 43.83, and 39.11 μg g-1 h-1, respectively. Further, PSMPs and As(III) triggered "oxidative bursts" in cells, damaging cell membranes and reducing chlorophyll content and Rubisco activity. As a result, photosynthesis, respiration, and growth were inhibited. When compared with an absence of PSMP, the addition of L- (S-) sized PSMP to the As-containing solution would result in a lower (higher) impact on C. reinhardtii. Overall, this study demonstrated that microplastics significantly affect As accumulation in C. reinhardtii. Our results indicate that the critical role of this algal species in As cycling in earth's pedo- and hydrosphere may be impeded by microplastic pollution.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
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26
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Chen C, Parsons MW, Levi CR, Spratt NJ, Lin L, Kleinig T, Butcher K, Cheng X, Dong Q, O'Brien B, Avivi RI, Krause M, Sylaja PN, Choi P, Bhuta S, Yin C, Yang J, Wang P, Qiu W, Bivard A. What Is the "Optimal" Target Mismatch Criteria for Acute Ischemic Stroke? Front Neurol 2021; 11:590766. [PMID: 33584495 PMCID: PMC7874100 DOI: 10.3389/fneur.2020.590766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 12/11/2020] [Indexed: 11/27/2022] Open
Abstract
We aimed to compare Perfusion Imaging Mismatch (PIM) and Clinical Core Mismatch (CCM) criteria in ischemic stroke patients to identify the effect of these criteria on selected patient population characteristics and clinical outcomes. Patients from the INternational Stroke Perfusion Imaging REgistry (INSPIRE) who received reperfusion therapy, had pre-treatment multimodal CT, 24-h imaging, and 3 month outcomes were analyzed. Patients were divided into 3 cohorts: endovascular thrombectomy (EVT), intravenous thrombolysis alone with large vessel occlusion (IVT-LVO), and intravenous thrombolysis alone without LVO (IVT-nonLVO). Patients were classified using 6 separate mismatch criteria: PIM-using 3 different measures to define the perfusion deficit (Delay Time, Tmax, or Mean Transit Time); or CCM-mismatch between age-adjusted National Institutes of Health Stroke Scale and CT Perfusion core, defined as relative cerebral blood flow <30% within the perfusion deficit defined in three ways (as above). We assessed the eligibility rate for each mismatch criterion and its ability to identify patients likely to respond to treatment. There were 994 patients eligible for this study. PIM with delay time (PIM-DT) had the highest inclusion rate for both EVT (82.7%) and IVT-LVO (79.5%) cohorts. In PIM positive patients who received EVT, recanalization was strongly associated with achieving an excellent outcome at 90-days (e.g., PIM-DT: mRS 0-1, adjusted OR 4.27, P = 0.005), whereas there was no such association between reperfusion and an excellent outcome with any of the CCM criteria (all p > 0.05). Notably, in IVT-LVO cohort, 58.2% of the PIM-DT positive patients achieved an excellent outcome compared with 31.0% in non-mismatch patients following successful recanalization (P = 0.006). Conclusion: PIM-DT was the optimal mismatch criterion in large vessel occlusion patients, combining a high eligibility rate with better clinical response to reperfusion. No mismatch criterion was useful to identify patients who are most likely response to reperfusion in non-large vessel occlusion patients.
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Affiliation(s)
- Chushuang Chen
- Melbourne Brain Centre, University of Melbourne, Parkville, VIC, Australia
| | - Mark W Parsons
- Department of Neurology, Liverpool Hospital, University of New South Wales, Sydney, NSW, Australia
| | - Christopher R Levi
- Department of Neurology, John Hunter Hospital, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Neil J Spratt
- Department of Neurology, John Hunter Hospital, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Longting Lin
- Department of Neurology, Liverpool Hospital, University of New South Wales, Sydney, NSW, Australia
| | - Timothy Kleinig
- Department of Neurology, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Kenneth Butcher
- Prince of Wales Medical School, University of New South Wales, Sydney, NSW, Australia
| | - Xin Cheng
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Billy O'Brien
- Department of Neurology, Gosford Hospital, Gosford, NSW, Australia
| | - Richard I Avivi
- Division of Neuroradiology, Department of Medical Imaging, University of Toronto and Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Martin Krause
- Department of Neurology, Kolling Institute, Royal North Shore Hospital, University of Sydney, Sydney, NSW, Australia
| | - P N Sylaja
- Department of Neurology, Sri Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Philip Choi
- Department of Neurology, Box Hill Hospital, Melbourne, VIC, Australia
| | - Sandeep Bhuta
- Department of Medical Imaging, Gold Coast University Hospital, Southport, QLD, Australia
| | - Congguo Yin
- Department of Neurology, Hangzhou First Hospital, Zhejiang, China
| | - Jianhong Yang
- Department of Neurology, Ningbo First Hospital, Zhejiang, China
| | - Peng Wang
- Department of Neurology, Taizhou First People's Hospital, Zhejiang, China
| | - Weiwen Qiu
- Department of Neurology, Lishui People's Hospital, Zhejiang, China
| | - Andrew Bivard
- Melbourne Brain Centre, University of Melbourne, Parkville, VIC, Australia
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Song FR, Qiu W, Ruan B, Zhu WM, Yang GJ, Li L, Geng WH, Zhao HY. [A comparative study on diagnosis of silicosis by digital and high kV film-screen chest radiography]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 38:919-921. [PMID: 33406553 DOI: 10.3760/cma.j.cn121094-20190613-00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the feasibility of soft copy image of chest digital radiography (DR(SC)) in pneumoconiosis diagnosis by observing the reading effect of DR(SC) and comparing it with high kV film-screen chest radiography (FSR(HkV)) . To provide a basis for the establishment of a regional information network platform for pneumoconiosis diagnosis. Methods: A total of 119 miners who were exposed to silica dust and engaged in copper or lead-zinc mining were collected by the Third People's Hospital of Yunnan from October 2017 to August 2019. The pulmonary X-ray findings of DRSC and FSR(HkV) in each case were independently judged and diagnosed by three experienced diagnostic physicians, and the final decision was made according to the consensus of most doctors. The consistency of the two imaging methods was analyzed by observing the main small opacity shape, the overall density, the range of distribution, the aggregation of the small opacity and the big opacity, and the diagnosis stage. Results: there were 118 males and 1 female with an average age of 46.21 years. Average exposure time 7.38 years. The pulmonary X-ray findings of 113 cases with two imaging methods were mainly the round small opacity of p,q and r,but the reticular irregular opacity were not prominent, Only one case of FSR(HkV) judgment p shape and DR(SC) judgment q shape were observed, The coincidence rate was 99.12% (112/113) . huger opacity were observed in the other 6 cases. The coincidence rate was 95.51% (4/89) between pneumoconiosis-free and stageⅠ, and there was no significant difference between stageⅡand stage Ⅲ (30/30, P>0.05) . Conclusion: The x-ray findings of Silicosis with small round shadow in lung can be used by DR(SC) in diagnosis and staging.
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Affiliation(s)
- F R Song
- Outpatient Department of The Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - W Qiu
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - B Ruan
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - W M Zhu
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - G J Yang
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - L Li
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - W H Geng
- Occupational Diseases Department of Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - H Y Zhao
- Outpatient Department of The Third People's Hospital of Yunnan Province, Kunming 650011, China
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Dong Y, Gao M, Qiu W, Song Z. Adsorption of arsenite to polystyrene microplastics in the presence of humus. Environ Sci Process Impacts 2020; 22:2388-2397. [PMID: 33206081 DOI: 10.1039/d0em00324g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polystyrene microplastics (PSMPs) are detrimental in aqueous environments. This study found that humus, mainly comprising humic acid (HA) and fulvic acid (FA), can facilitate the adsorption of As(iii) by PSMPs. The phenolic hydroxyl groups provided by HA contribute to the transport of As(iii). HA interacts with the PSMPs to form a π complex, providing more sites on the microplastics for As(iii) adsorption, while reducing the time required to reach adsorption equilibrium. Increased temperatures in aqueous environments destroy the hydrogen bonds contributing to the adsorption process, thus causing desorption. Increases in pH and ionic strength reduce the adsorption of As(iii) by increasing charge repulsion and microplastic agglomeration, and the co-existing NO3- and PO43- ions inhibit the removal of As(iii) in the solution. Our combined results indicate that the migration of PSMPs after As(iii) adsorption in the presence of HA and FA requires further research attention.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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Shu Y, Guo J, Ma X, Yan Y, Wang Y, Chen C, Sun X, Wang H, Yin J, Long Y, Yan X, Lu Z, Petersen F, Yu X, Qiu W. Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is associated with IRF7, BANK1 and TBX21 polymorphisms in two populations. Eur J Neurol 2020; 28:595-601. [PMID: 33065758 DOI: 10.1111/ene.14596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND PURPOSE Autoantibodies targeting the GluN1(NR1) subunit of the anti-N-methyl-D-aspartate receptor (NMDAR) cause encephalitis. Although it has been shown that anti-NMDAR encephalitis is associated with human leukocyte antigen (HLA) loci, susceptibility genes for the disease outside the HLA loci remain unidentified. In this study, we aimed to explore the association of anti-NMDAR encephalitis with non-HLA genes. METHODS Two Chinese anti-NMDAR encephalitis cohorts from Han populations were recruited for this study. The North Chinese case-control set consisted of 98 patients and 460 controls, while the South Chinese case-control set included 78 patients and 541 controls. All participants were genotyped for 28 single nucleotide polymorphisms that are associated with autoimmune disorders or infectious diseases. RESULTS In two independent case-control sets, we identified significant associations of anti-NMDAR encephalitis with IRF7 rs1131665 (odds ratio [OR] 3.34, 95% confidence interval [CI] 1.99-5.63; P < 0.000001, Padjusted = 0.00004), BANK1 rs4522865 (OR 1.44, 95% CI 1.15-1.82; P = 0.0017, Padjusted = 0.0149), and TBX21 rs17244587 (OR 2.03, 95% CI 1.35-3.05; P = 0.00051, Padjusted = 0.0066). Furthermore, analysis of the three polymorphisms with clinical features of the disease revealed that the IRF7 rs1131665 was associated with tumor status. CONCLUSION The present study has for the first time identified non-HLA susceptibility genes for anti-NMDAR encephalitis. The association of IRF7, BANK1 and TBX21 with anti-NMDAR encephalitis suggests that B-cell activation, Th1 responses, virus infection and the type I interferon signaling pathway are involved in the pathogenesis of the disease.
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Affiliation(s)
- Y Shu
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.,Priority Area Asthma and Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - J Guo
- Department of Neurology, Tangdu Hospital of Fourth Military Medical University, Xi'an, China
| | - X Ma
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Yan
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Y Wang
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - C Chen
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Sun
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - H Wang
- Department of Neurology, Southern Medical University, Guangzhou, China
| | - J Yin
- Priority Area Asthma and Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Y Long
- Department of Neurology, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - X Yan
- Department of Neurology, Tangdu Hospital of Fourth Military Medical University, Xi'an, China
| | - Z Lu
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - F Petersen
- Priority Area Asthma and Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - X Yu
- Priority Area Asthma and Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - W Qiu
- Department of Neurology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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30
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Dong Y, Gao M, Liu X, Qiu W, Song Z. The mechanism of polystyrene microplastics to affect arsenic volatilization in arsenic-contaminated paddy soils. J Hazard Mater 2020; 398:122896. [PMID: 32454328 DOI: 10.1016/j.jhazmat.2020.122896] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Different concentrations and sizes of polystyrene microplastics (PS-MP) were added to low (25.9) and high (56.8) mg kg-1 As-contaminated soil to investigate the effects of PS-MP on soil As volatilization. Either S1 (10 μm) or S2 (0.1-1 μm) PS-MP was added to As-contaminated soil at 0.8%, which increased As volatilization by 13.7% and 7.4% in low As-contaminated soil; and 21.8% and 16.5% in high As-contaminated soil, respectively. The addition of PS-MP reduced the water-soluble (WS) As content, increased the non-specifically-sorbed (NSS), specifically-sorbed (SS) As content, soil catalase (CAT) and urease (UE) activities. The abundance of Proteobacteria and Firmicutes showed opposite trends to As volatilization, while the abundance of Bacteroidetes and arsM gene expression exhibited similar variability to As volatilization over the 7-week experiment. Therefore, we postulate that in As-contaminated soil, As volatilization was enhanced in the presence of PS-MP due to two possible mechanisms: 1) PS-MP affects the abundance of Proteobacteria, Firmicutes, Bacteroidetes, and arsM gene in soil; 2) PS-MP increases As volatilization via reducing soil nutrient and increasing the content of SS As. Our results highlighted the importance of investigating impacts of microplastics on the volatility of specific contaminants to implement effective environmental remediation strategies in polluted farmlands.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Xuewei Liu
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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Khan ZH, Gao M, Qiu W, Qaswar M, Islam MS, Song Z. The sorbed mechanisms of engineering magnetic biochar composites on arsenic in aqueous solution. Environ Sci Pollut Res Int 2020; 27:41361-41371. [PMID: 32683620 DOI: 10.1007/s11356-020-10082-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to produce magnetic biochar for the removal of As (III) from the aquatic environment. Magnetic biochar (MBC) was prepared from corn straw‑derived biochar. Pristine biochar (BC) was impregnated with iron oxide and relative analyses were performed on the adsorption capacity of BC's and MBC's. After impregnation, the specific surface area of MBC800-0.6300 increased from 79.66 to 309.7 m2 g-1 and superparamagnetic magnetization was about 9.75 emu g-1 contributed by the contained Fe3O4. Results of MBC800-0.6300 showed maximum adsorption capacity (Qmax) 22.94 mg g-1 for As (III) based on Langmuir model which is 5.71 times higher than the adsorption capacity of BC800 (4.02 mg g-1). The adsorption of As (III) increased significantly due to the successful loading of iron oxide and the increased oxygen functional groups that were confirmed by XPS and FTIR results. The removal of As (III) followed Langmuir isotherm model and pseudo-second-order (R2 ≥ 0.99), indicated that the adsorption rate was monolayer and depended on the chemical adsorption process, respectively. Consequently, the simple preparation procedure and high adsorption performance suggest that MBC800-0.6300 could be used as an environment-friendly and extremely effective adsorbent for As (III) removal from aqueous environment.
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Affiliation(s)
- Zulqarnain Haider Khan
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Muhammad Qaswar
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Beijing, China
| | - Md Shafiqul Islam
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
- Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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32
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Fan S, Liao Y, Qiu W, Li L, Li D, Cao X, Ai B. Targeting Toll-like receptor 4 with CLI-095 (TAK-242) enhances the antimetastatic effect of the estrogen receptor antagonist fulvestrant on non-small cell lung cancer. Clin Transl Oncol 2020; 22:2074-2086. [PMID: 32367494 PMCID: PMC7505887 DOI: 10.1007/s12094-020-02353-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/04/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE Estrogen plays a critical role in the invasiveness and metastasis of non-small cell lung cancer (NSCLC) through estrogen receptor β (ERβ). However, the antimetastatic effect of the ERβ antagonist fulvestrant was still limited in NSCLC patients. Recently, Toll-like receptor 4 (TLR4) signaling was implicated in NSCLC metastasis. Our present study aimed to evaluate the synergistic antimetastatic effect of a combination of fulvestrant and the TLR4-specific inhibitor CLI-095 (TAK-242) on human NSCLC cells. METHODS The expression levels of ERβ and TLR4 were detected by immunohistochemical (IHC) analysis of 180 primary NSCLC and 30 corresponding metastatic lymph node samples. The association between ERβ and TLR4 expression was analyzed. The aggressiveness of NSCLC cells treated with fulvestrant, CLI-095 or the drug combination and formation status of their invadopodia, invasion-associated structures, were investigated. The protein levels in NSCLC cells in different groups were determined by Western blot and immunofluorescence analyses. RESULTS Here, a positive correlation between ERβ and TLR4 expression was observed in both primary NSCLC tissue (Spearman's Rho correlation coefficient = 0.411, p < 0.001) and metastatic lymph node tissue (Spearman's Rho correlation coefficient = 0.374, p = 0.009). The protein levels of ERβ in NSCLC cell lines were decreased by fulvestrant, and this suppressive effect was significantly enhanced when fulvestrant was combined with CLI-095 (p < 0.05). Both the migration and invasion of NSCLC cells were suppressed by fulvestrant or CLI-095 alone, and the combination of fulvestrant + CLI-095 showed the strongest inhibitory effect (p < 0.05). In addition, the results demonstrated that CLI-095 also helped fulvestrant restrict the formation and function of invadopodia in NSCLC cells (p < 0.05). CONCLUSIONS Collectively, our study results suggested that CLI-095 enhances the antimetastatic effect of fulvestrant on NSCLC and provided support for further investigation of the antitumor activity of combined therapy with antiestrogen and anti-TLR4 agents in the clinic.
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Affiliation(s)
- S. Fan
- Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, 361000 Fujian Province China
| | - Y. Liao
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Dadao Street 1277, Wuhan, 430030 Hubei Province China
| | - W. Qiu
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 Hubei Province China
| | - L. Li
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 Hubei Province China
| | - D. Li
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 Hubei Province China
| | - X. Cao
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 Hubei Province China
| | - B. Ai
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 Hubei Province China
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Zhou Y, Meng D, Chen F, Wu Z, Wang B, Wang S, Geng P, Dai D, Zhou Q, Qiu W. Inhibitory Effect of Imperatorin on the Pharmacokinetics of Diazepam In Vitro and In Vivo. Front Pharmacol 2020; 11:01079. [PMID: 33041783 PMCID: PMC7525091 DOI: 10.3389/fphar.2020.01079] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/02/2020] [Indexed: 01/21/2023] Open
Abstract
Background Diazepam is a benzodiazepine drug used to treat anxiety, insomnia, and muscle spasms. Imperatorin is a phytochemical isolated from medicinal plants and is widely used in herbal medicine. The aim of this study was to investigate the interactions between imperatorin and diazepam in vitro and in vivo and to provide evidence-based guidance for the safe clinical use of the drug. Methods In vitro inhibition of imperatorin was assessed by incubating rat liver microsomes with diazepam to determine IC50 values and the type of inhibition. For in vivo assessment, six rats were pretreated with 50 mg/kg imperatorin for two weeks, six were administered saline, and a single dose of 10 mg/kg diazepam was administered orally to both groups 30 min after the administration of imperatorin. Results Imperatorin inhibited the in vitro metabolism of diazepam via the competitive mechanism of CYP450. The IC50 values of imperatorin to nordazepam and temazepam were 1.54 μM and 1.80 μM, respectively. The inhibitory constant values for temazepam and nordazepam were 1.24 μM and 1.29 μM, respectively. Long-term administration of imperatorin significantly increased the AUC(0-12h), AUC(0-∞), and Cmax of diazepam, while Vz/F and CLz/F were decreased significantly (P < 0.05). In turn, the AUC(0-12h), AUC(0-∞), and Cmax of nordazepam and temazepam decreased significantly, and Vz/F and CLz/F increased significantly (P < 0.05). Conclusions This study demonstrates that imperatorin inhibits the metabolism of diazepam both in vitro and in vivo. These results indicated that more attention should be paid when taking diazepam together with food or herbs containing IMP, although further investigation is still needed.
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Affiliation(s)
- Yunfang Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China
| | - Deru Meng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China.,College of Chemistry and Bioengineering, Yichun University, Yichun, China
| | - Feifei Chen
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China
| | - Zhengping Wu
- College of Chemistry and Bioengineering, Yichun University, Yichun, China
| | - Binglan Wang
- Department of Neurology, The People's Hospital of Longquan, Longquan, China
| | - Shuanghu Wang
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China
| | - Peiwu Geng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China
| | - Dapeng Dai
- The Key laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Quan Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China
| | - Weiwen Qiu
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China.,College of Chemistry and Bioengineering, Yichun University, Yichun, China.,Department of Neurology, Lishui Hospital of Traditional Chinese Medicine, Lishui, China
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Qu S, Liu S, Qiu W, Liu J, Wang H. Screening of autophagy genes as prognostic indicators for glioma patients. Am J Transl Res 2020; 12:5320-5331. [PMID: 33042422 PMCID: PMC7540153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
Although autophagy is reported to be involved in tumorigenesis and cancer progression, its correlation with the prognosis of glioma patients remains unclear. Thus, the aim of this study was to identify prognostic autophagy-related genes, analyze their correlation with clinicopathological features of glioma, and further construct a prognostic model for glioma patients. After 139 autophagy-related genes were obtained from the GeneCards database, their expression data in glioma patients were extracted from the Chinese Glioma Genome Atlas database. Univariate and multivariate COX regression analyses were performed to identify prognostic autophagy-related genes. Ten hub autophagy-related genes associated with prognosis were identified. The autophagy risk score (ARS) was only positively correlated with histopathology (P = 0.000) and World Health Organization grade (P = 0.000). Kaplan-Meier analysis showed that the overall survival of patients with a high ARS was significantly worse than that of patients with a low ARS (hazard ratio = 1.59, 95% confidence interval = 1.25-2.03, P = 0.0001). In addition, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses revealed several common biological processes and signaling pathways related to the 10 hub genes in glioblastoma. A prediction model was developed for glioma patients, which demonstrated high prediction efficiency on calibration. Moreover, the area under the receiver operating characteristic curve values for 1-, 3- and 5-year survival probabilities were 0.790, 0.861, and 0.853, respectively. In conclusion, we identified 10 autophagy-related genes that can serve as novel prognostic biomarkers for glioma patients. Our prediction model accurately predicted patient outcomes, and thus, may be a valuable tool in clinical practice.
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Affiliation(s)
- Shanqiang Qu
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080, China
- Department of Neurosurgery, Nanfang Hospital, Southern Medical UniversityGuangzhou 510515, China
| | - Shuhao Liu
- Department of Gastrointestinal Surgery, The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen 518107, China
| | - Weiwen Qiu
- Department of Neurology, Lishui People’s Hospital (The Sixth Affiliated Hospital of Wenzhou Medical University)Lishui 323000, China
| | - Jin Liu
- Department of Neurosurgery, Lishui People’s Hospital (The Sixth Affiliated Hospital of Wenzhou Medical University)Lishui 323000, China
| | - Huafu Wang
- Department of Clinical Pharmacy, Lishui People’s Hospital (The Sixth Affiliated Hospital of Wenzhou Medical University)Lishui 323000, China
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Che N, Qiu W, Wang JK, Sun XX, Xu LX, Liu R, Gu L. MOTS-c improves osteoporosis by promoting the synthesis of type I collagen in osteoblasts via TGF-β/SMAD signaling pathway. Eur Rev Med Pharmacol Sci 2020; 23:3183-3189. [PMID: 31081069 DOI: 10.26355/eurrev_201904_17676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate whether MOTS-c can regulate the synthesis of type I collagen in osteoblasts by regulating TGF-β/SMAD pathway, thereby improving osteoporosis. MATERIALS AND METHODS Viability of hFOB1.19 cells treated with MOTS-c was detected by CCK-8 assay. The mRNA and protein levels of TGF-β, SMAD7, COL1A1 and COL1A2 in hFOB1.19 cells were detected by quantitative Real-time polymerase chain reaction (qRT-PCR) and Western blot, respectively. We then changed expressions of TGF-β and SMAD7 by plasmids transfection to detect levels of COL1A1 and COL1A2 in hFOB1.19 cells by qRT-PCR and Western blot, respectively. RESULTS Cell viability was significantly increased after treatment of 1.0 μM MOTS-c for 24 h or 0.5 μM MOTS-c for 48 h in a time-dependent manner. The mRNA and protein expressions of TGF-β, SMAD7, COL1A1 and COL1A2 in hFOB1.19 cells were dependent on the concentration of MOTS-c. In addition, MOTS-c increased the expressions of COL1A1 and COL1A2, which were partially reversed by knockdown of TGF-β or SMAD7. CONCLUSIONS MOTS-c could promote osteoblasts to synthesize type I collagen via TGF-β/SMAD pathway.
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Affiliation(s)
- N Che
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Curtin D, Peterson ME, Qiu W, Fraser PM. Predicting soil pH changes in response to application of urea and sheep urine. J Environ Qual 2020; 49:1445-1452. [PMID: 33016443 DOI: 10.1002/jeq2.20130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/23/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Volatilization of NH3 following urea application or livestock urine deposition can result in significant loss of N to the environment. Urea hydrolysis to NH4 + results in an increase in pH, which in turn promotes transformation of NH4 + to NH3 . Accurately predicting changes in soil pH following urea (or urine) application will allow successful simulation of NH3 volatilization. The magnitude of the pH change depends on the soil's pH buffering capacity (pHBC). However, as actual pHBC values are not generally available, pHBC proxies (e.g., cation exchange capacity) have been used in modeling studies. In a 34-d laboratory incubation study, we measured soil pH and mineral N (NH4 + and NO3 - ) following a large application of urea (800 mg N kg-1 soil) to four soils with a range of pHBC values. In a second incubation, pH changes and mineral N dynamics were monitored in soil treated with sheep urine (773 mg N kg-1 soil) in the absence and presence of the nitrification inhibitor dicyandiamide. In both incubations, pH changes associated with urea hydrolysis and subsequent nitrification of NH4 + were predicted well using measured pHBC data. Our results confirmed that pHBC is base-type dependent (values greater when measured using KOH than NH4 OH). Soil pHBC is easily measured, and the use of a measured value (determined using NH4 OH) can improve model simulations of pH in the field and, potentially, lead to improved estimates of NH3 loss from animal-deposited urine patches and urea-treated soil.
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Affiliation(s)
- D Curtin
- New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
| | - M E Peterson
- New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
| | - W Qiu
- New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
| | - P M Fraser
- New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, New Zealand
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Khan ZH, Gao M, Qiu W, Song Z. Properties and adsorption mechanism of magnetic biochar modified with molybdenum disulfide for cadmium in aqueous solution. Chemosphere 2020; 255:126995. [PMID: 32416394 DOI: 10.1016/j.chemosphere.2020.126995] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we present the preparation of MoS2-modified magnetic biochar (MoS2@MBC) as a novel adsorbent by a simple hydrothermal method. MoS2@MBC contains abundant S-containing functional groups that facilitate efficient Cd(II) removal from aqueous systems. We employed various characterization techniques to explore the morphology, surface area, and chemical composition of MoS2@MBC; these included Brunauer-Emmett-Teller analysis scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction,. The results indicated the successful decoration of the surface of MoS2@MBC with iron and MoS2, and a higher surface area of MoS2@MBC than that of unmodified biochar. Moreover, adsorption properties including thermodynamics and kinetics were investigated along with the effects of pH, humic acid, and ionic strength on the Cd(II) adsorption onto MoS2@MBC. The O-, C-, S-, and Fe-containing functional groups on the surface of MoS2@MBC led to an electrostatic attraction of Cd(II) and strong Cd-S complexation. The Langmuir and pseudo second-order models fitted best for the batch adsorption experiments results. The adsorption capacity of MoS2@MBC (139 mg g-1 on the basis of the Langmuir model) was 7.81 times higher than that of pristine biochar. The adsorption process was found to be pH-dependent. The experimental results indicated that MoS2@MBC is an effective adsorbent for removing Cd(II) from water solutions. Further, the adsorption process involved the complexation of Cd(II) with oxygen-based functional groups, ion exchange, electrostatic attraction, Cd(II)-π interactions, metal-sulfur complexation, and inner-surface complexation. This work provides new insights into the Cd(II) ions removal from water via adsorption. It also demonstrates that MoS2@MBC is an efficient and economic adsorbent to treat Cd(II)-contaminated water.
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Affiliation(s)
- Zulqarnain Haider Khan
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China; Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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Du Q, Liu J, Tian D, Zhang X, Zhu J, Qiu W, Wu J. Long Noncoding RNA LINC00173 Promotes NUTF2 Expression Through Sponging miR-765 and Facilitates Tumorigenesis in Glioma. Cancer Manag Res 2020; 12:7211-7217. [PMID: 32848473 PMCID: PMC7429190 DOI: 10.2147/cmar.s262279] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/23/2020] [Indexed: 12/12/2022] Open
Abstract
Background Glioma is one of the leading causes of cancer-related deaths. This study aimed to investigate the function and mechanism of long noncoding RNA (lncRNA) LINC00173 in the regulation of glioma progression. Methods LINC00173 expression was measured using qRT-PCR. Survival rate was analyzed through Kaplan–Meier method. CCK8, colony formation and EdU assays were performed to measure cell proliferation while transwell was used to determine cell migration and invasion. Luciferase reporter assay was conducted to test RNA interaction. Results LINC00173 expression was elevated in glioma tissues and cells. LINC00173 high expression predicted poor prognosis. Loss of LINC00173 inhibited proliferation, migration and invasion. LINC00173 interacted with miR-765 to enhance NUTF2 expression. MiR-765 expression was negatively correlated with LINC00173 and NUTF2 in glioma tissues. NUTF2 level was increased in glioma tissues. NUTF2 overexpression rescued the potential of proliferation, migration and invasion in LINC00173-silenced cells. Conclusion Our research demonstrated that LINC00173 promotes glioma progression through targeting miR-765/NUTF2 axis.
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Affiliation(s)
- Qinghua Du
- Neurosurgery Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Jin Liu
- Neurosurgery Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Da Tian
- Neurosurgery Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Xuelei Zhang
- Neurosurgery Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Jinwei Zhu
- Neurosurgery Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Weiwen Qiu
- Neurology Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
| | - Jun Wu
- Pathology Department, Lishui City People's Hospital, Lishui 323000, People's Republic of China
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Affiliation(s)
- J M Ospel
- Department of Clinical NeurosciencesUniversity of CalgaryCalgary, Alberta, Canada.,Department of RadiologyUniversity Hospital Basel, University of BaselBasel, Switzerland
| | - W Qiu
- Department of Clinical Neurosciences
| | - M Goyal
- Departments of Clinical Neurosciences and RadiologyUniversity of CalgaryCalgary, Alberta, Canada.,Department of RadiologyUniversity Hospital Basel, University of BaselBasel, Switzerland
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Su M, Wang J, Wang C, Wang X, Dong W, Qiu W, Wang Y, Zhao X, Zou Y, Song L, Zhang L, Hui R. Correction: MicroRNA-221 inhibits autophagy and promotes heart failure by modulating the p27/CDK2/mTOR axis. Cell Death Differ 2020; 28:420-422. [PMID: 32632292 DOI: 10.1038/s41418-020-0582-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- M Su
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - J Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - C Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - X Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - W Dong
- Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - W Qiu
- Department of Urology, Peking University First Hospital and the Institute of Urology, Beijing, 100034, China
| | - Y Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - X Zhao
- Department of Cardiology, Qingdao Municipal Hospital, Qingdao University, Qingdao, 266071, China
| | - Y Zou
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - L Song
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - L Zhang
- Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - R Hui
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China.
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41
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Khan Z, Gao M, Qiu W, Song Z. Efficient As(III) Removal by Novel MoS 2-Impregnated Fe-Oxide-Biochar Composites: Characterization and Mechanisms. ACS Omega 2020; 5:13224-13235. [PMID: 32548509 PMCID: PMC7288705 DOI: 10.1021/acsomega.0c01268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 05/12/2020] [Indexed: 05/15/2023]
Abstract
Sorbents that efficiently eliminate toxic metal(loid)s from industrial wastes are required for the protection of the environment and human health. Therefore, we demonstrated efficient As(III) removal by novel, eco-friendly, hydrothermally prepared MoS2-impregnated FeO x @BC800 (MSF@BC800). The properties and adsorption mechanism of the material were investigated by X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller analysis, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The synergistic effects of FeO x and MoS2 on MSF@BC800 considerably enhanced As(III)-removal efficiency to ≥99.73% and facilitated superior As(III) affinity in aqueous solutions (K d ≥ 105 mL g-1) compared to those of FeO x @BC800 and MS@BC800, which showed 37.07 and 17.86% As(III)-removal efficiencies and K d = 589 and 217 mL g-1, respectively, for an initial As(III) concentration of ∼10 mg L-1. The maximum Langmuir As(III) sorption capacity of MSF@BC800 was 28.4 mg g-1. Oxidation of As(III) to As(V) occurred on the MSF@BC800 composite surfaces. Adsorption results agreed with those obtained from the Freundlich and pseudo-second-order models, suggesting multilayer coverage and chemisorption, respectively. Additionally, MSF@BC800 characteristics were examined under different reaction conditions, with temperature, pH, ionic strength, and humic acid concentration being varied. The results indicated that MSF@BC800 has considerable potential as an eco-friendly environmental remediation and As(III)-decontamination material.
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Affiliation(s)
- Zulqarnain
Haider Khan
- Agro-Environmental
Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
- Chinese
Academy of Agricultural Sciences, Beijing 100081, China
| | - Minling Gao
- Department
of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The
New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department
of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
- . Tel.: 0086 13920782195
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Lian F, Liu X, Gao M, Li H, Qiu W, Song Z. Effects of Fe-Mn-Ce oxide-modified biochar on As accumulation, morphology, and quality of rice (Oryza sativa L.). Environ Sci Pollut Res Int 2020; 27:18196-18207. [PMID: 32172416 DOI: 10.1007/s11356-020-08355-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
The fluidity of arsenic (As) in soil used for rice cultivation under flooding conditions is the main reason for its high accumulation in rice, which poses a serious threat to human's health. Biochar can immobilize heavy metal (for example lead) of soil because of the strong binding of heavy metals to the inner biochar particles. We conducted a pot experiment to evaluate the effects of biochar (BC) and Fe-Mn-Ce oxide-modified biochar composites (FMCBCs) on the morphology, As accumulation, and grain quality of rice grown in As-contaminated soils. The biochar and FMCBC treatments significantly increased the dry weight of roots, stems, leaves, and rice grains grown in As-contaminated soil (P < 0.05). The As concentration in different parts of rice was significantly lower with treatment FMCBC3-2 (BC, Fe, Mn, and Ce weight ratio of 24:2:3:10) than with the BC and control (no BC) treatments. The application of FMCBC3-2 maximized the yield and quality of rice grains: rice grain yields were 61.45-68.41% higher over control and the proportion of essential amino acids in the rice grains was 31.01-44.62%. The application of FMCBCs also increased the concentration of Fe-Mn plaques, which prevent the uptake of As by rice, thereby mitigating the toxic effects of As-contaminated soil on rice. In summary, Fe-Mn-Ce oxide-modified BC composites fixed As, reducing its fluidity and the As concentration in rice. Our results show that FMCBC3 could play an important role in reducing As accumulation and increasing the grain yield and quality of rice, thus ensuring food safety in regions contaminated with As.
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Affiliation(s)
- Fei Lian
- Institute of Environmental Processes and Pollution Control and School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Xuewei Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Huizhong Li
- Liaoning Geological Environment Monitoring Station, Shenyang, 110032, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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Huang Y, Gao M, Deng Y, Khan ZH, Liu X, Song Z, Qiu W. Efficient oxidation and adsorption of As(III) and As(V) in water using a Fenton-like reagent, (ferrihydrite)-loaded biochar. Sci Total Environ 2020; 715:136957. [PMID: 32014778 DOI: 10.1016/j.scitotenv.2020.136957] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/17/2020] [Accepted: 01/25/2020] [Indexed: 06/10/2023]
Abstract
The by-product of the traditional Fenton reaction, colloidal arsenic-‑iron oxide, is migratable and may cause secondary environmental pollution. This paper reported a new strategy involving oxidizing and immobilizing inorganic arsenic using the Fenton reaction, and avoiding the risk of secondary contamination. Lab synthesized ferrihydrite-loaded biochar (FhBC) was developed for oxidizing and binding As(III) and As(V) in aqueous solution. Batch experiments and a series of spectrum analysis (e.g., X-ray photoelectron spectroscopy [XPS], electron paramagnetic resonance [EPR], and Fourier transform infrared spectroscopy [FTIR]) were conducted to study the oxidizing or adsorption capacity and mechanism. The maximum adsorption capacity of FhBC for As(III) and As(V) is 1.315 and 1.325 mmol/g, respectively. In addition, FhBC has an efficient oxidizing capacity within a wide pH range, which is because biochar promotes the Fenton reaction by acting as an electron donator, electron shuttler, or by providing persistent free radicals. Moreover, the adsorption mechanism was studied by FTIR spectroscopy, XPS, and X-ray diffraction (XRD). The formation of internal spherical complexes and iron oxides with a higher degree of crystallization was observed, which indicate that the products of adsorption are stable and robust in a complex environment and can exist in a highly crystallized form after adsorbing arsenic ions. Therefore, the use of FhBC as an adsorbent for arsenic represents a new strategy of using the Fenton reaction while reducing secondary contamination. These results may contribute to further mechanistic studies or extensive practical applications of FhBC.
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Affiliation(s)
- Yifan Huang
- Soil Chemistry and Chemical Soil Quality Group, Wageningen University & Research, P.O. BOX 47, Wageningen, AA 6700, Netherlands; Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Yingxuan Deng
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Zulqarnain Haider Khan
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Xuewei Liu
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
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44
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Khan ZH, Gao M, Qiu W, Islam MS, Song Z. Mechanisms for cadmium adsorption by magnetic biochar composites in an aqueous solution. Chemosphere 2020; 246:125701. [PMID: 31891847 DOI: 10.1016/j.chemosphere.2019.125701] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/14/2019] [Accepted: 12/17/2019] [Indexed: 05/22/2023]
Abstract
There is a demand to develop techniques for the continuous removal/immobilization of heavy metals from contaminated soil and water bodies. In this study, a unique biochar preparation method was developed for the removal of cadmium. First, conventional biochars of corn straw were produced by pyrolysis at two temperatures and then treated using one-step synthesis at different ferric nitrate ratios and different calcination temperatures to produce magnetic biochars. Second, the prepared biochars were used as adsorbents for Cd(II) removal from a solution, and the best one was selected for further evaluation. Various techniques were used to characterize the adsorbents and determine the main adsorption mechanism. The results indicated that the biochars successfully carried iron particles within, which improved the specific surface area, formed inner-sphere complexes with oxygen-containing groups, and increased the number of oxygen-containing groups. The adsorption experiments revealed that MBC800-0.6300 had a higher affinity for Cd(II) than the other adsorbents. Batch adsorption experiments were performed to explore the influence of the kinetics, isotherm, pH, thermodynamics, ionic strength, and humic acid on Cd(II) adsorption. The results indicated that the Langmuir model fit the Cd(II) adsorption best with MBC800-0.6300 having the highest adsorption capacity (46.90 mg g-1). The sorption kinetics of Cd(II) on the adsorbent follows a pseudo-second-order kinetics model. Because MBC800-0.6300 is loaded with metal ions, it can be conveniently collected by a magnet. Thus, biochar modification methods with ferric nitrate impregnation provide an excellent approach to eliminating Cd(II) from aqueous solutions. The possible adsorption mechanisms include chemisorption, electrostatic interaction, and monolayer adsorption.
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Affiliation(s)
- Zulqarnain Haider Khan
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China; Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
| | - Md Shafiqul Islam
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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Li Y, Yen H, Lei Q, Qiu W, Luo J, Lindsey S, Qin L, Zhai L, Wang H, Wu S, Li W, Hu W, Li H, Liu H. Impact of human activities on phosphorus flows on an early eutrophic plateau: A case study in Southwest China. Sci Total Environ 2020; 714:136851. [PMID: 32018984 DOI: 10.1016/j.scitotenv.2020.136851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/29/2019] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
The net anthropogenic phosphorus inputs (NAPI) model has been used extensively to assess changes in phosphorus (P) inputs and cycling in the environment. However, temporary populations have generally been unconsidered in these assessments. In this study, the NAPI model was used to estimate P loads from the 16 towns and villages in the Erhai Lake Basin (ELB), Southwest China and to evaluate the potential impact from temporary residents (tourism). The results showed that the average value P inputs in the basin (estimated at 2384 kg P km-2 year-1) were 5 times the national average level, and that temporary residents contributed 1%. Agriculture accounted for most of the net P, with chemical fertilizers (55% of the inputs) as the main source, followed by food and animal feed. Only 9.54% of the P inputs to the basin were exported. River water quality and NAPI were significantly correlated (P < 0.01). Tourism industry contributes significantly to regional economic growth and prosperity, but its beneficial effects on the economy does not equate with the adverse impact on environment. This study illustrates what is happening in Southwest China and provides scientific evidence that shows we need to find novel ways to reduce nutrients.
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Affiliation(s)
- Ying Li
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Haw Yen
- Blackland Research and Extension Center, Texas A&M Agrilife Research, Texas A&M University, TX 76502, USA
| | - Qiuliang Lei
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Jiafa Luo
- AgResearch, Ruakura Research Centre, 10 Bisley Road, Hamilton 3214, New Zealand
| | - Stuart Lindsey
- AgResearch, Ruakura Research Centre, 10 Bisley Road, Hamilton 3214, New Zealand
| | - Lihuan Qin
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Limei Zhai
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hongyuan Wang
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shuxia Wu
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wenchao Li
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wanli Hu
- Institute of Agricultural Resources & Environment, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
| | - Huizhong Li
- Liaoning Provincial Department of Natural Resources, Shenyang 110032, China
| | - Hongbin Liu
- Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Dong Y, Gao M, Song Z, Qiu W. Microplastic particles increase arsenic toxicity to rice seedlings. Environ Pollut 2020; 259:113892. [PMID: 31931412 DOI: 10.1016/j.envpol.2019.113892] [Citation(s) in RCA: 162] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 12/23/2019] [Accepted: 12/27/2019] [Indexed: 05/06/2023]
Abstract
Hydroponic experiments were conducted to study the effects of microplastic particles of polystyrene (PS) and polytetrafluoroethylene (PTFE) on arsenic (As) content in leaves and roots of rice seedlings, and the changes in root vigor and physiological and biochemical indicators under single or combined PS and PTFE with As(III) treatment. Rice biomass decreased with increasing concentrations of PS, PTFE, and As(III) in the growth medium. The highest root (leaf) biomass decreases were 21.4% (10.2%), 25.4% (11.8%), and 26.2% (16.2%) with the addition of 0.2 g L-1 PS, 0.2 g L-1 PTFE, and 4 mg L-1 As(III), respectively. Microplastic particles and As(III) inhibited biomass accumulation by inhibiting root activity and RuBisCO activity, respectively. The addition of As(III) and microplastic particles (PS or PTFE) inhibited photosynthesis through non-stomatal and stomatal factors, respectively; furthermore, net photosynthetic rate, chlorophyll fluorescence, and the Chl a content of rice were reduced with the addition of As(III) and microplastic particles (PS or PTFE). Microplastic particles and As(III) induced an oxidative burst in rice tissues through mechanical damage and destruction of the tertiary structure of antioxidant enzymes, respectively, thereby increasing O2- and H2O2 in roots and leaves, inducing lipid peroxidation, and destroying cell membranes. When PS and PTFE were added at 0.04 and 0.1 g L-1, respectively, the negative effects of As(III) on rice were reduced. Treatment with 0.2 g L-1 PS or PTFE, combined with As(III), had a higher impact on rice than the application of As(III) alone. PS and PTFE reduced As(III) uptake, and absorbed As decreased with the increasing concentration of microparticles. The underlying mechanisms for these effects may involve direct adsorption of As, competition between As and microplastic particles for adsorption sites on the root surface, and inhibition of root activity by microplastic particles.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin, 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch, 8140, New Zealand
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Hou C, Chen WX, Qiu W, Li XJ, Tian Y, Zhu HX, Zeng YR, Liang HC, Peng BW, Chen LF. [Clinical characteristics, treatment and prognosis of myelin oligodendrocyte glycoprotein antibody-associated optic neuritis in children]. Zhonghua Yi Xue Za Zhi 2020; 100:685-689. [PMID: 32187912 DOI: 10.3760/cma.j.issn.0376-2491.2020.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To investigate the clinical characteristics, treatment and prognosis of myelin oligodendrocyte glycoprotein antibody-associated optic neuritis (MOG-ON) in pediatric patients. Methods: Clinical data, laboratory examination, the initial best corrected visual acuity (BCVA), fundus, neuroelectrophysiological results, MRI imaging, treatment and prognosis of children diagnosed with MOG-ON from 2016 to 2019 were retrospectively analyzed. Results: A total of 29 eyes from 16 children were involved, with a male/female ratio of 1∶1, onset age of (7.0±2.9) years. Seven of 16 patients had prodromal infection, with a unilateral/bilateral ratio of 3∶13, and 2 cases had recurrent optic neuritis. Before treatment, BCVA of 19 eyes (65.5%) was ≤0.1, among them, 4 had no sense of light, 5 had light sense, 5 with sense of hands in front of eyes, and 5 with sense of fingers in front of eyes. There were 10 eyes (34.5%) with BCVA of 0.1-0.5. After treatment, there were 4 eyes (13.8%), 5 eyes (17.2%) and 20 eyes (69.0%) in groups with BCVA of 0.1-0.5, 0.5-1.0, and>1.0, respectively. Twelve of 16 patients had optic papillitis in fundus examination during acute phase. The latency was prolonged and the amplitude was decreased in P100 wave of all the children. Thirteen out of 16 children showed swelling and thickening of optic nerve in MRI T2WI. MRI images exhibited intracranial demyelinating lesions in 12 of 16 children and long segment spinal cord lesions in 3 of 16 children. Thirteen of 16 patients showed effective results after intravenous methylprednisolone (IVMP) and intravenous immunoglobulin (IVIG) treatment. There was no relapse after administration of mycophenolate mofetil in 2 recurrent children. No progression after administration of rituximab was found in 1 child with corticosteroid insensitivity. The average follow-up time was (16±9) months and no recurrence occurred. Ten of 16 patients had full recovery, 4 had significant improvement, and 2 showed no significant improvement. Conclusions: There is no significant gender difference in the incidence of pediatric MOG-ON. Bilateral involvement and severe visual impairment are common in acute phase. Most patients have good response to IVMP combined with IVIG treatment and hence have a good prognosis. Only a few of them have neurological sequelae.
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Affiliation(s)
- C Hou
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - W X Chen
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - W Qiu
- Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - X J Li
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - Y Tian
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - H X Zhu
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - Y R Zeng
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - H C Liang
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - B W Peng
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - L F Chen
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
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He Y, Ma C, Hou J, Li X, Peng X, Wang H, Wang S, Liu L, Liu B, Tian L, Liu Z, Liu X, Xu X, Zhang D, Jiang C, Wang J, Yao Y, Zhu G, Bai Y, Wang S, Sun C, Li J, He S, Wang C, Zhang Z, Qiu W. Chinese expert group consensus on diagnosis and clinical management of osteoradionecrosis of the mandible. Int J Oral Maxillofac Surg 2020; 49:411-419. [PMID: 31353174 DOI: 10.1016/j.ijom.2019.06.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/23/2019] [Accepted: 06/05/2019] [Indexed: 02/08/2023]
Abstract
Osteoradionecrosis of the mandible (MORN) is one of the most devastating complications caused by radiation therapy in the head and neck region. It is characterized by infection and chronic necrosis of the mandible as the main manifestation. Clinically, MORN-related symptoms include swelling, pain, dysphagia, trismus, masticatory or speech disorders, refractory orocutaneous fistula, bone exposure, and even pathological fracture. MORN has become a challenging clinical problem for oral and maxillofacial surgeons to deal with, but thus far, this problem has not been solved due to the lack of widely accepted treatment algorithms or guidelines. Because of the nonexistence of standardized treatment criteria, most clinical treatment against MORN nowadays is largely based on controversial empirical understandings, while recommendations on post-therapeutic evaluations are scarce. Therefore, to further unify and standardize the diagnosis and treatment of MORN, to decrease the huge waste of medical resources, and ultimately, to improve the wellbeing of the patients, the Chinese Society of Oral and Maxillofacial Surgery (CSOMS) convened an expert panel specialized in MORN from 16 domestic medical colleges and affiliated hospitals to discuss the spectrum of diagnosis and and formulate treatment. In addition, consensus recommendations were also revised with a comprehensive literature review of the previous treatment experiences and research pearls. This 'expert consensus statement on diagnosis and clinical management of MORN' is for clinical reference.
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Affiliation(s)
- Y He
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
| | - C Ma
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - J Hou
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - X Li
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - X Peng
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - H Wang
- Stomatology Hospital Affiliated to School of Medicine, Zhejiang University, Zhejiang, China
| | - S Wang
- Salivary Gland Disease Center and Molecular Laboratory for Gene Therapy and Tooth Regeneration, School of Stomatology, Capital Medical University, Beijing, China
| | - L Liu
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - L Tian
- Department of Cranio-facial Trauma and Orthognathic Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, China; The State Key Laboratory of Military Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Z Liu
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - X Liu
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - X Xu
- Department of Oral and Maxillofacial Surgery, The Second Affiliated Hospital Zhejiang University School of Medicine, Zhejiang, Hangzhou, China
| | - D Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - C Jiang
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - J Wang
- Department of Head and Neck Surgery, Gansu Province Tumor Hospital, Lanzhou, China
| | - Y Yao
- Department of Radiotherapy, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - G Zhu
- Department of Radiotherapy, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Bai
- Department of Radiotherapy, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S Wang
- Department of Radiation Oncology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - C Sun
- Department of Oromaxillofacial - Head and Neck Surgery, Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, Liaoning, China
| | - J Li
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - S He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - C Wang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Z Zhang
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - W Qiu
- Department of Oral & Maxillofacial - Head & Neck Oncology, 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
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49
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Qiu W, Luo WJ, Zhou YF. [Rerecognition of myelin oligodendrocyte glycoprotein antibody associated disorders]. Zhonghua Yi Xue Za Zhi 2020; 100:321-323. [PMID: 32074772 DOI: 10.3760/cma.j.issn.0376-2491.2020.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- W Qiu
- Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - W J Luo
- Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Y F Zhou
- Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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50
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Li XJ, Hou C, Qiu W, Chen LF, Zeng YR, Zhu HX, Tian Y, Peng BW, Wu WL, Gan YY, Liang HC, Chen WX. [Clinical features and prognosis of pediatric myelin oligodendrocyte glycoprotein antibody associated acute disseminated encephalomyelitis]. Zhonghua Yi Xue Za Zhi 2020; 100:339-344. [PMID: 32074776 DOI: 10.3760/cma.j.issn.0376-2491.2020.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To analyze the clinical features, outcome and prognosis of pediatric myelin oligodendrocyte glycoprotein (MOG) antibody associated acute disseminated encephalomyelitis (ADEM), and provide evidence for improving the diagnosis and treatment of this disease. Methods: This study involved 30 MOG antibody-associated ADEM patients in the Department of Neurology, Guangzhou Women and Children's Medical Center. Patients' clinical information were analyzed. Results: The mean onset age was (5.2±3.3) years old, the ration of male to female was 16∶14. Fifty percent of these patients had a history of precede infection or vaccination before onset. Encephalopathy and seizures were the most common clinical manifestations, followed by movement disorder. In addition, some patients had other positive autoantibodies. Brain Magnetic resonance imaging (MRI) showed extensive, asymmetrical, indefinite large patchy lesions in bilateral cortical and subcortical areas and the spinal cord was characterized by long segmental myelitis. In acute attack, the patients had a good response to corticosteroid combined immunoglobulin therapy. Most of these patients had a good prognosis and recurrence rate was about 20%. Conclusions: The onset age of MOG antibody-associated ADEM is around 5 years old. Encephalopathy and seizures were the most common clinical manifestations. Most patients have a good response to corticosteroid combined immunoglobulin therapy. Some patients may have a recurrent disease course.
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Affiliation(s)
- X J Li
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - C Hou
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - W Qiu
- Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - L F Chen
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - Y R Zeng
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - H X Zhu
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - Y Tian
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - B W Peng
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - W L Wu
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - Y Y Gan
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - H C Liang
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
| | - W X Chen
- Department of Neurology, Guangzhou Women and Children's Medical Center, Guangzhou 510120, China
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