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学者姓名：陈晓晨
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Abstract ：
Growing epidemiological evidence suggests that the diverse and functional gut microbiota plays a vital role in regulating the health and disease of organisms including human. However, organisms are inevitably exposed to widespread environmental pollutants, and the interactions between their gut microbiota and pollutants are relatively underreported. The present paper considers heavy metals (HMs) and microplastics (MPs) as representatives of traditional and emerging pollutants and systematically summarizes their effects on gut microbiota and the effects of gut microbiota on pollutants. The former refers to the alterations in the gut microbiota's abundance, diversity and composition caused by pollutants, whereas the latter focuses on the changes in the metabolism of pollutants by adjusting the dominant bacteria, specific enzymes, and key genes. In particular, some fields were found to be poorly studied, including extension of research to humans, mechanistic exploration of gut microbiota's changes, and the metabolism of pollutants by gut microbiota. Accordingly, we draw attention to the development and application of in vitro test models to more accurately explore the interactions between pollutants and gut microbiota when assessing human health risks. In addition, by combining state-of-the-art biological techniques with culturomics, more gut microbiota can be identified, isolated, and cultured, which helps to confirm the relationship between pollutants and gut microbiota and the potential function of gut microbiota in pollutant metabolism. Furthermore, the phenomenon of coexposure to HMs and MPs is becoming more frequent, and their interactions with gut microbiota and the influence on human health is expected to be one of the frontier research fields in the future. The key information presented in this review can stimulate further development of techniques and methodologies for filling the knowledge gaps in the relationships between combined pollutants (HMs and MPs), gut microbiota, and human health.
Keyword ：
Biological techniques Biological techniques Coexposure Coexposure Gut microbiota Gut microbiota Heavy metal Heavy metal In vitro test In vitro test Microplastic Microplastic
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| GB/T 7714 | Chen, Xiaochen , Zhang, Zengdi , Hsueh, Yushiang et al. Interactions between environmental pollutants and gut microbiota: A review connecting the conventional heavy metals and the emerging microplastics [J]. | ENVIRONMENTAL RESEARCH , 2025 , 269 . |
| MLA | Chen, Xiaochen et al. "Interactions between environmental pollutants and gut microbiota: A review connecting the conventional heavy metals and the emerging microplastics" . | ENVIRONMENTAL RESEARCH 269 (2025) . |
| APA | Chen, Xiaochen , Zhang, Zengdi , Hsueh, Yushiang , Zhang, Chunpeng , Yu, Jianying , Zhu, Junyu et al. Interactions between environmental pollutants and gut microbiota: A review connecting the conventional heavy metals and the emerging microplastics . | ENVIRONMENTAL RESEARCH , 2025 , 269 . |
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The production of isolated metallic nanoparticles with multifunctionalized properties, such as size and shape, is crucial for biomedical, photocatalytic, and energy storage or remediation applications. This study investigates the initial particle formations of gold nanoparticles (AuNPs) bioproduced in the cyanobacteria Anabaena sp. using high-resolution transmission electron microscopy images for digital image analysis. The developed method enabled the discovery of cerium nanoparticles (CeNPs), which were biosynthesized in the cyanobacteria Calothrix desertica. The particle size distributions for AuNPs and CeNPs were analyzed. After 10 h, the average equivalent circular diameter for AuNPs was 4.8 nm, while for CeNPs, it was approximately 5.2 nm after 25 h. The initial shape of AuNPs was sub-round to round, while the shape of CeNPs was more roundish due to their amorphous structure and formation restricted to heterocysts. The local PSDs indicate that the maturation of AuNPs begins in the middle of vegetative cells and near the cell membrane, compared to the other regions of the cell.
Keyword ：
Anabaena sp. Anabaena sp. biorecovery biorecovery biosynthesis biosynthesis Calothrix desertica Calothrix desertica digital image analysis digital image analysis TEM TEM
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| GB/T 7714 | Fritz, Melanie , Chen, Xiaochen , Yang, Guifang et al. Gold Nanoparticles Bioproduced in Cyanobacteria in the Initial Phase Opened an Avenue for the Discovery of Corresponding Cerium Nanoparticles [J]. | MICROORGANISMS , 2024 , 12 (2) . |
| MLA | Fritz, Melanie et al. "Gold Nanoparticles Bioproduced in Cyanobacteria in the Initial Phase Opened an Avenue for the Discovery of Corresponding Cerium Nanoparticles" . | MICROORGANISMS 12 . 2 (2024) . |
| APA | Fritz, Melanie , Chen, Xiaochen , Yang, Guifang , Lv, Yuancai , Liu, Minghua , Wehner, Stefan et al. Gold Nanoparticles Bioproduced in Cyanobacteria in the Initial Phase Opened an Avenue for the Discovery of Corresponding Cerium Nanoparticles . | MICROORGANISMS , 2024 , 12 (2) . |
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Whether coexisting microplastics (MPs) affect the ecological and health risks of cadmium (Cd) in soils is a cutting-edge scientific issue. In this study, four typical Chinese soils were prepared as artificially Cdcontaminated soils with/without aged polystyrene (PS). TCLP and in vitro PBET model were used to determine the leachability (ecological risk) and oral bioaccessibility (human health risk) of soil Cd. The mechanisms by which MPs influence soil Cd were discussed from direct and indirect perspectives. Results showed that there was no significant difference in the leachability of soil Cd with/without aged PS. Additionally, aged PS led to a significant decrease in the bioaccessibility of soil Cd in gastric phase, but not in small intestinal phase. The increase in surface roughness and the new characteristic peaks (e.g., Si -O -Si) of aged PS directly accounted for the change in Cd bioaccessibility. The change in organic matter content indirectly accounted for the exceptional increase in Cd bioaccessibility of black soil with aged PS in small intestinal phase. Furthermore, the changes in cation exchange capacity and Cd mobility factor caused by aged PS explained the change in Cd leachability. These results contribute to a deeper understanding about environmental and public health in complicated emerging scenarios.
Keyword ：
Bioaccessibility Bioaccessibility Cd Cd in vitro test in vitro test Leachability Leachability Microplastics Microplastics
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| GB/T 7714 | Chen, Xiao-Chen , Wang, Ao , Wang, Jun-Jie et al. Influences of coexisting aged polystyrene microplastics on the ecological and health risks of cadmium in soils: A leachability and oral bioaccessibility based study [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 . |
| MLA | Chen, Xiao-Chen et al. "Influences of coexisting aged polystyrene microplastics on the ecological and health risks of cadmium in soils: A leachability and oral bioaccessibility based study" . | JOURNAL OF HAZARDOUS MATERIALS 469 (2024) . |
| APA | Chen, Xiao-Chen , Wang, Ao , Wang, Jun-Jie , Zhang, Zeng-Di , Yu, Jian-Ying , Yan, Ying-Jie et al. Influences of coexisting aged polystyrene microplastics on the ecological and health risks of cadmium in soils: A leachability and oral bioaccessibility based study . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 . |
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Arsenic (As)-contaminated soil poses great health risk to human mostly through inadvertent oral exposure. We investigated CaAl-layered double hydroxide (CaAl-LDH), a promising immobilising agent, for the remediation of As-contaminated Chinese soils. The effects on specific soil properties and As fractionation were analyzed, and changes in the health risk of soil As were accurately assessed by means of advanced in vivo mice model and in vitro PBET-SHIME model. Results showed that the application of CaAl-LDH significantly increased soil pH and concentration of Fe and Al oxides, and effectively converted active As fractions into the most stable residual fraction, guaranteeing long-term remediation stability. Based on in vivo test, As relative bioavailability was significantly reduced by 37.75%. Based on in vitro test, As bioaccessibility in small intestinal and colon phases was significantly reduced by 25.65% and 28.57%, respectively. Furthermore, As metabolism (reduction and methylation) by the gut microbiota inhabiting colon was clearly observed. After immobilisation with CaAl-LDH, the concentration of bioaccessible As(V) in the colon fluid was significantly reduced by 61.91%, and organic As (least toxic MMA(V) and DMA(V)) became the main species, which further reduced the health risk of soil As. In summary, CaAl-LDH proved to be a feasible option for immobilisation remediation of As -contaminated soils, and considerable progress was made in relevant health risk assessment.
Keyword ：
Arsenic Arsenic CaAl-layered double hydroxide CaAl-layered double hydroxide Health risk Health risk Immobilisation Immobilisation Soil remediation Soil remediation
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| GB/T 7714 | Chen, Xiao-Chen , Huang, Zhen-Jia , Wang, Ao et al. Immobilisation remediation of arsenic-contaminated soils with promising CaAl-layered double hydroxide and bioavailability, bioaccessibility, and speciation-based health risk assessment [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 . |
| MLA | Chen, Xiao-Chen et al. "Immobilisation remediation of arsenic-contaminated soils with promising CaAl-layered double hydroxide and bioavailability, bioaccessibility, and speciation-based health risk assessment" . | JOURNAL OF HAZARDOUS MATERIALS 469 (2024) . |
| APA | Chen, Xiao-Chen , Huang, Zhen-Jia , Wang, Ao , Yu, Jian-Ying , Zhang, Jian-Yu , Xiao, Zi-Jun et al. Immobilisation remediation of arsenic-contaminated soils with promising CaAl-layered double hydroxide and bioavailability, bioaccessibility, and speciation-based health risk assessment . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 . |
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Microplastics (MPs) have been widely found in the environment and have exerted non-negligible impacts on the environment and human health. Extensive research has shown that MPs can act as carriers for viruses and interacts with them in various ways. Whether MPs influence the persistence, transmission and infectivity of virus has attracted global concern in the context of increasing MPs contamination. This review paper provides an overview of the current state of knowledge regarding the interactions between MPs and viruses in aquatic environments. Latest progress and research trends in this field are summarized based on literature analysis. Additionally, we discuss the potential risks posed by microplastic-associated viruses to human health and the environmental safety, highlighting that MPs can affect viral transmission and infectivity through various pathways. Finally, we underscores the need for further research to address key knowledge gaps, such as elucidating synergistic effects between MPs and viruses, understanding interactions under real environmental conditions, and exploring the role of biofilms in virus-MPs interactions. This review aims to contribute to a deeper understanding on the transmission of viruses in the context of increasing MPs pollution in water, and promote actions to reduce the potential risks.
Keyword ：
adsorption adsorption impact impact mechanism mechanism microplastics microplastics viruses viruses
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| GB/T 7714 | Wang, Xiuwen , Zheng, Kaixin , Wang, Yi et al. Microplastics and viruses in the aquatic environment: a mini review [J]. | FRONTIERS IN MICROBIOLOGY , 2024 , 15 . |
| MLA | Wang, Xiuwen et al. "Microplastics and viruses in the aquatic environment: a mini review" . | FRONTIERS IN MICROBIOLOGY 15 (2024) . |
| APA | Wang, Xiuwen , Zheng, Kaixin , Wang, Yi , Hou, Xin , He, Yike , Wang, Zhiyun et al. Microplastics and viruses in the aquatic environment: a mini review . | FRONTIERS IN MICROBIOLOGY , 2024 , 15 . |
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Keyword ：
advanced technologies/systems advanced technologies/systems conventional contaminants conventional contaminants emerging contaminants emerging contaminants environmental engineering environmental engineering microorganisms microorganisms municipal engineering municipal engineering
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| GB/T 7714 | Chen, Xiaochen , Kasuga, Ikuro , Liu, Xianhua et al. New insight into the roles of microorganisms in municipal and environmental engineering technologies/systems [J]. | FRONTIERS IN MICROBIOLOGY , 2024 , 14 . |
| MLA | Chen, Xiaochen et al. "New insight into the roles of microorganisms in municipal and environmental engineering technologies/systems" . | FRONTIERS IN MICROBIOLOGY 14 (2024) . |
| APA | Chen, Xiaochen , Kasuga, Ikuro , Liu, Xianhua , Li, Hongbo , Zeng, Ming , Cai, Xiaolin . New insight into the roles of microorganisms in municipal and environmental engineering technologies/systems . | FRONTIERS IN MICROBIOLOGY , 2024 , 14 . |
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Dissolved organic matter (DOM) is important in determining the drinking water treatment and the supplied water quality. However, a comprehensive DOM study for the whole water supply system is lacking and the potential effects of secondary water supply are largely unknown. This was studied using dissolved organic carbon (DOC), absorption spectroscopy, and fluorescence excitation -emission matrices -parallel factor analysis (EEMPARAFAC). Four fluorescent components were identified, including humic-like C1-C2, tryptophan-like C3, and tyrosine -like C4. In the drinking water treatment plants, the advanced treatment using ozone and biological activated carbon (O3-BAC) was more effective in removing DOC than the conventional process, with the removals of C1 and C3 improved by 17.7%-25.1% and 19.2%-27.0%. The absorption coefficient and C1-C4 correlated significantly with DOC in water treatments, suggesting that absorption and fluorescence could effectively track the changes in bulk DOM. DOM generally remained stable in each drinking water distribution system, suggesting the importance of the treated water quality in determining that of the corresponding network. The optical indices changed notably between distribution networks of different treatment plants, which enabled the identification of changing water sources. A comparison of DOM in the direct and secondary water supplies suggested limited impacts of secondary water supply, although the changes in organic carbon and absorption indices were detected in some locations. These results have implications for better understanding the changes of DOM in the whole water supply system to help ensure the supplied water quality.
Keyword ：
Dissolved organic matter Dissolved organic matter Drinking water treatment Drinking water treatment Fluorescence excitation -emission matrices Fluorescence excitation -emission matrices Parallel factor analysis Parallel factor analysis Water supply system Water supply system
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| GB/T 7714 | Lin, Jinjin , Yang, Liyang , Zhuang, Wan-E et al. Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 358 . |
| MLA | Lin, Jinjin et al. "Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 358 (2024) . |
| APA | Lin, Jinjin , Yang, Liyang , Zhuang, Wan-E , Wang, Yue , Chen, Xiaochen , Niu, Jia . Tracking the changes of dissolved organic matter throughout the city water supply system with optical indices . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 358 . |
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Plant litter is an important input source of carbon and nitrogen in soil. While microplastics (MPs) and plant litter are ubiquitously present in soil, their combined impact on soil biogeochemical processes remains poorly understood. To address this gap, we examined the soil changes resulting from the coexistence of plant litter (Alfalfa) and polyethylene microplastics (PE). The soil changes included physicochemical properties, composition of soil dissolved organic matter, and structure of the soil microbial community. The results showed that the addition of polyethylene (PE) inhibited the degradation of humus-like substances and decreased the quantity of humic acidlike compounds in soil dissolved organic matter (DOM). PE negatively impacted plant litter decomposition, disrupted soil organic carbon (SOC) breakdown, interfered with the nitrogen cycle, and significantly altered microbial community structures during the process. By day 35, SOC and total nitrogen (TN) levels were reduced by 39.8% and 10.1%, respectively, in the presence of PE. Furthermore, PE significantly decreased the abundance of nitrogen-fixing microbes, including Streptomyces (43.1%) and Bacillus (45.9%), which play key roles in nitrate reduction to ammonium. This study highlights the environmental effects of MPs on plant litter decomposition and their potential implications for soil biogeochemical processes.
Keyword ：
Litter decomposition Litter decomposition Microplastics Microplastics Soil biogeochemistry Soil biogeochemistry Soil microbial community Soil microbial community Soil organic carbon Soil organic carbon
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| GB/T 7714 | Liu, Wanxin , Wang, Yi , Gu, Chunbo et al. Polyethylene microplastics distinctly affect soil microbial community and carbon and nitrogen cycling during plant litter decomposition [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 373 . |
| MLA | Liu, Wanxin et al. "Polyethylene microplastics distinctly affect soil microbial community and carbon and nitrogen cycling during plant litter decomposition" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 373 (2024) . |
| APA | Liu, Wanxin , Wang, Yi , Gu, Chunbo , Wang, Jiao , Dai, Yexin , Maryam, Bushra et al. Polyethylene microplastics distinctly affect soil microbial community and carbon and nitrogen cycling during plant litter decomposition . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 373 . |
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以福州大学至诚学院周边区域为研究区,通过数学统计学和地统计学相结合的方法解析小尺度下城市表层土壤As、Cd、Cr、Cu、Pb、Ni的空间分布及来源.结果表明:Cd含量低于检测限,其余5种重金属元素的平均含量尽管均超过福州市背景值,但均未超过建设用地土壤污染风险管控标准.进而利用主成分分析、相关性分析,结合GIS工具进行地统计分析,得到2个中等空间自相关的主成分:第1主成分主要包括与交通及机动车辆高度相关的Pb、Cr、Cu;第2主成分仅有Ni,可能来源于土壤成土过程及城市生活垃圾的不合理弃置形成的.整体而言,研究区的土壤不存在严重的重金属污染问题,所得结果对于该城市小区域的土壤污染状况掌握,以及相应的城市规划、风险管控等具有显著的现实指导意义.
Keyword ：
城市土壤 城市土壤 小尺度 小尺度 来源解析 来源解析 空间分布 空间分布 重金属 重金属
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| GB/T 7714 | 鄢英杰 , 高文皓 , 林慧胧 et al. 城市小尺度下土壤重金属的空间分布及来源解析 [J]. | 能源与环境 , 2024 , (6) : 5-9 . |
| MLA | 鄢英杰 et al. "城市小尺度下土壤重金属的空间分布及来源解析" . | 能源与环境 6 (2024) : 5-9 . |
| APA | 鄢英杰 , 高文皓 , 林慧胧 , 戴诗茵 , 王澳 , 陈晓晨 . 城市小尺度下土壤重金属的空间分布及来源解析 . | 能源与环境 , 2024 , (6) , 5-9 . |
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Herein, the particle size distributions (PSDs) and shape analysis of in vivo bioproduced particles from aqueous Au3+ and Eu3+ solutions by the cyanobacterium Anabaena sp. are examined in detail at the nanoscale. Generally, biosynthesis is affected by numerous parameters. Therefore, it is challenging to find the key set points for generating tailored nanoparticles (NPs). PSDs and shape analysis of the Au and Eu-NPs were performed with ImageJ using high-resolution transmission electron microscopy (HR-TEM) images. As the HR-TEM image analysis reflects only a fraction of the detected NPs within the cells, additional PSDs of the complete cell were performed to determine the NP count and to evaluate the different accuracies. Furthermore, local PSDs were carried out at five randomly selected locations within a single cell to identify local hotspots or agglomerations. The PSDs show that particle size depends mainly on contact time, while the particle shape is hardly affected. The particles formed are distributed quite evenly within the cells. HR-PSDs for Au-NPs show an average equivalent circular diameter (ECD) of 8.4 nm (24 h) and 7.2 nm (51 h). In contrast, Eu-NPs preferably exhibit an average ECD of 10.6 nm (10 h) and 12.3 nm (244 h). Au-NPs are classified predominantly as "very round" with an average reciprocal aspect ratio (RAR) of similar to 0.9 and a Feret major axis ratio (FMR) of similar to 1.17. Eu-NPs mainly belong to the "rounded" class with a smaller RAR of similar to 0.6 and a FMR of similar to 1.3. These results show that an increase in contact time is not accompanied by an average particle growth for Au-NPs, but by a doubling of the particle number. Anabaena sp. is capable of biosorbing and bioreducing dissolved Au3+ and Eu3+ ions from aqueous solutions, generating nano-sized Au and Eu particles, respectively. Therefore, it is a low-cost, non-toxic and effective candidate for a rapid recovery of these sought-after metals via the bioproduction of NPs with defined sizes and shapes, providing a high potential for scale-up.
Keyword ：
cyanobacteria cyanobacteria digital image processing digital image processing growth monitoring growth monitoring nanoparticle size distribution nanoparticle size distribution shape classification shape classification
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| GB/T 7714 | Fritz, Melanie , Koersten, Susanne , Chen, Xiaochen et al. Time-Dependent Size and Shape Evolution of Gold and Europium Nanoparticles from a Bioproducing Microorganism, a Cyanobacterium: A Digitally Supported High-Resolution Image Analysis [J]. | NANOMATERIALS , 2023 , 13 (1) . |
| MLA | Fritz, Melanie et al. "Time-Dependent Size and Shape Evolution of Gold and Europium Nanoparticles from a Bioproducing Microorganism, a Cyanobacterium: A Digitally Supported High-Resolution Image Analysis" . | NANOMATERIALS 13 . 1 (2023) . |
| APA | Fritz, Melanie , Koersten, Susanne , Chen, Xiaochen , Yang, Guifang , Lv, Yuancai , Liu, Minghua et al. Time-Dependent Size and Shape Evolution of Gold and Europium Nanoparticles from a Bioproducing Microorganism, a Cyanobacterium: A Digitally Supported High-Resolution Image Analysis . | NANOMATERIALS , 2023 , 13 (1) . |
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