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  1. Book ; Online ; E-Book: Advances in toxicology and risk assessment of nanomaterials and emerging contaminants

    Guo, Liang-Hong / Mortimer, Monika

    2022  

    Author's details Liang-Hong Guo, Monika Mortimer editors
    Keywords Electronic books
    Language English
    Size 1 Online-Ressource (xiii, 371 Seitgen), Illustrationen, Diagramme
    Publisher Springer
    Publishing place Singapore
    Publishing country Singapore
    Document type Book ; Online ; E-Book
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    HBZ-ID HT021296903
    ISBN 978-981-16-9116-4 ; 9789811691157 ; 981-16-9116-9 ; 9811691150
    DOI 10.1007/978-981-16-9116-4
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Sulfonamide disinfection byproducts exhibited severe toxicity to human commensal bacteria.

    Cai, DongMing / Ding, Jinjian / Li, Fangfang / Zhuang, Guoqiang / Li, Minjie / Guo, Liang-Hong

    Water research

    2024  Volume 256, Page(s) 121551

    Abstract: Many antibiotic disinfection byproducts have been detected but their toxicity has not been evaluated adequately. In this report, the chlorination reaction kinetics of five common sulfamides (SAs), reaction intermediates and their toxicity were ... ...

    Abstract Many antibiotic disinfection byproducts have been detected but their toxicity has not been evaluated adequately. In this report, the chlorination reaction kinetics of five common sulfamides (SAs), reaction intermediates and their toxicity were investigated. Chlorination of sulfapyridine (SPD), sulfamethazine (SMT), sulfathiazole (STZ), and sulfisoxazole (SIZ) followed the second-order kinetics, and were degraded completely within 10 min. A large number of reaction intermediates were deteced by LC-MS, among which a total of 16 intermediates were detected for the first time. Toxicity of the five SAs chlorination solutions was evaluated separately by examining their effects on the growth rate of S. salivarius K12, a commensal bacterium in the human digestive system. After 30 min chlorination, solutions of SMT, STZ and sulfadiazine (SDZ) each exhibited severe toxicity by inhibiting the bacteria growth completely, whereas the inhibition was only 50 % and 20  % by SIZ and SPD respectively. Based on the comparison between toxicity test results and mass spectra, three SA chlorination intermediates, m/z 187.2 (C
    MeSH term(s) Disinfection ; Humans ; Sulfonamides/toxicity ; Halogenation ; Bacteria/drug effects ; Disinfectants/toxicity ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/toxicity ; Anti-Bacterial Agents/chemistry ; Water Pollutants, Chemical/toxicity ; Water Pollutants, Chemical/chemistry
    Chemical Substances Sulfonamides ; Disinfectants ; Anti-Bacterial Agents ; Water Pollutants, Chemical
    Language English
    Publishing date 2024-04-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 202613-2
    ISSN 1879-2448 ; 0043-1354
    ISSN (online) 1879-2448
    ISSN 0043-1354
    DOI 10.1016/j.watres.2024.121551
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Synthesis, functionalization and photoelectrochemical immunosensing application of WO3-based semiconductor materials

    Zhang, Bihong / An, Zhiquan / Li, Minjie / Guo, Liang-Hong

    Trends in Analytical Chemistry. 2023 Aug., v. 165 p.117149-

    2023  

    Abstract: Photoelectrochemical (PEC) immunosensing, as an essential direction of PEC bioanalysis, has attracted substantial research in the analytical and biological science due to its desirable combination of high sensitivity of PEC signal detection and high ... ...

    Abstract Photoelectrochemical (PEC) immunosensing, as an essential direction of PEC bioanalysis, has attracted substantial research in the analytical and biological science due to its desirable combination of high sensitivity of PEC signal detection and high specificity of immune-reactions. Photoelectrode material, as the suits of photo-to-electric converter and signal generator, mainly determines the performances of PEC immunosensor. Thus, the exploitation and preparation of semiconductor materials with excellent PEC performance have become a research hotspot in PEC immunoassay field. With moderate band gap (2.5–2.8 eV), high valence band potential (>3.0 eV), good resistance to photo-corrosion, low toxicity and high biocompatibility, WO₃ has been widely investigated and applied in the PEC immunosensing filed as a good photoelectrode material. This paper comprehensively reviews the synthesis, functionalization and immunosensor applications of WO₃ materials in recent years. It focuses on six functionalization methods of WO₃, including morphology modulation, crystal facet tailoring, element doping, hetero/homojunction construction, metal deposition, and dye sensitization, and highlights the impacts of functionalization on their morphology, composition, structure and properties. More importantly, from the perspective of immunoassay formats (i.e., unlabeled and labeled immunoassay), the signal amplification strategies and sensing mechanisms of WO₃-based PEC immunosensors are discussed in detail. Finally, the challenges and opportunities for the WO₃-based PEC immunosensors are prospected.
    Keywords analytical chemistry ; biocompatibility ; dyes ; immunoassays ; immunosensors ; photoelectrodes ; semiconductors ; toxicity ; Photoelectrochemical ; WO3 ; Synthesis ; Functionalization ; Immunoassay ; Immunosensor
    Language English
    Dates of publication 2023-08
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 2014041-1
    ISSN 0165-9936
    ISSN 0165-9936
    DOI 10.1016/j.trac.2023.117149
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Direct and gut microbiota-mediated toxicities of environmental antibiotics to fish and aquatic invertebrates

    Li, Zhi / Lü, Tingyu / Li, Minjie / Mortimer, Monika / Guo, Liang-Hong

    Chemosphere. 2023 July, v. 329 p.138692-

    2023  

    Abstract: The accumulation of antibiotics in the environment has ecological impacts that have received less attention than the human health risks of antibiotics, although the effects could be far-reaching. This review discusses the effects of antibiotics on the ... ...

    Abstract The accumulation of antibiotics in the environment has ecological impacts that have received less attention than the human health risks of antibiotics, although the effects could be far-reaching. This review discusses the effects of antibiotics on the health of fish and zooplankton, manifesting in direct or dysbiosis-mediated physiological impairment. Acute effects of antibiotics in these organism groups are usually induced at high concentrations (LC₅₀ at ∼100–1000 mg/L) that are not commonly present in aquatic environments. However, when exposed to sub-lethal, environmentally relevant levels of antibiotics (ng/L-μg/L) disruption of physiological homeostasis, development, and fecundity can occur. Antibiotics at similar or lower concentrations can induce dysbiosis of gut microbiota which can affect the health of fish and invertebrates. We show that the data about molecular-level effects of antibiotics at low exposure concentrations are limited, hindering environmental risk assessment and species sensitivity analysis. Fish and crustaceans (Daphnia sp.) were the two groups of aquatic organisms used most often for antibiotic toxicity testing, including microbiota analysis. While low levels of antibiotics impact the composition and function of gut microbiota in aquatic organisms, the correlation and causality of these changes to host physiology are not straightforward. In some cases, negative or lack of correlation have occurred, and, unexpectedly, gut microbial diversity has been unaffected or increased upon exposure to environmental levels of antibiotics. Efforts to incorporate functional analyses of gut microbiota are beginning to provide valuable mechanistic information, but more data is needed for ecological risk assessment of antibiotics.
    Keywords Daphnia ; antibiotics ; dysbiosis ; environmental assessment ; fecundity ; fish ; fish health ; homeostasis ; human health ; intestinal microorganisms ; toxicity ; zooplankton ; Crustaceans ; Microbiota ; Sub-lethal effects ; Environmental risks
    Language English
    Dates of publication 2023-07
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Pre-press version
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2023.138692
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Enantiomer-specific burden of metalaxyl and myclobutanil in non-occupationally exposed population with evidence from dietary intake and urinary excretion.

    Ding, Jinjian / Sun, Yan / Mortimer, Monika / Guo, Liang-Hong / Yang, Fangxing

    Ecotoxicology and environmental safety

    2023  Volume 267, Page(s) 115623

    Abstract: Metalaxyl (MET) and myclobutanil (MYC) are two widely used chiral fungicides that may pose health risks to non-occupationally exposed populations. Here, the two fungicides were enantiomer-specific quantified in the dietary food and urine of residents in ... ...

    Abstract Metalaxyl (MET) and myclobutanil (MYC) are two widely used chiral fungicides that may pose health risks to non-occupationally exposed populations. Here, the two fungicides were enantiomer-specific quantified in the dietary food and urine of residents in an Eastern China city, to determine the exposure and excretion of these contaminants in different populations. Results indicate that residues of MET and MYC varied with different food items at 0.42-0.86 ng/g fresh weight (FW) and 0.18-0.33 ng/g FW, respectively. In urine samples, the residual levels after creatinine adjusting (CR) ranged from 10.2 to 1715.4 ng/g CR for MET and were below the detection limit up to 320.7 ng/g CR for MYC. Significant age- and gender-related differences were separately found in urinary MET and MYC of different populations. Monte-Carlo simulations suggested that children had higher daily dietary intake (DDI) but lower urinary excretion (DUE) rates than youths, and thus may suffer higher body burdens. The residues of antifungally ineffective enantiomers (S-MET and R-MYC) were slightly higher than their antipodes in foods. Moreover, the enantiomer-selective urinary excretion resulted in higher retention of S-MET and R-MYC in the human body. Our results suggest that both dietary intake and urinary excretion should be enantiomer-specifically considered when assessing the exposure risk and body burden of chiral fungicides in the non-occupationally exposed population. Furthermore, substitutive application of enantiomer-enriched fungicide formulations can not only benefit the antifungal efficacy but also be safer for human health.
    MeSH term(s) Child ; Humans ; Adolescent ; Biodegradation, Environmental ; Fungicides, Industrial/analysis ; Soil Pollutants/analysis ; Stereoisomerism ; Eating
    Chemical Substances systhane (B6T1JTM6KZ) ; Fungicides, Industrial ; metalaxyl (16K4M187IF) ; Soil Pollutants
    Language English
    Publishing date 2023-10-25
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 436536-7
    ISSN 1090-2414 ; 0147-6513
    ISSN (online) 1090-2414
    ISSN 0147-6513
    DOI 10.1016/j.ecoenv.2023.115623
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Toxicological mechanisms of emerging per-/poly-fluoroalkyl substances: Focusing on transcriptional activity and gene expression disruption.

    Chen, Lu / Xie, Yue / Li, Minjie / Mortimer, Monika / Li, Fangfang / Guo, Liang-Hong

    Toxicology

    2023  Volume 494, Page(s) 153566

    Abstract: Environmental and human monitoring studies have witnessed increasing occurrence of emerging per-/poly-fluoroalkyl substances (ePFASs) worldwide. Three classes of ePFASs, namely chlorinated polyfluoroalkylether sulfonic acids, hexafluoropropylene oxide ... ...

    Abstract Environmental and human monitoring studies have witnessed increasing occurrence of emerging per-/poly-fluoroalkyl substances (ePFASs) worldwide. Three classes of ePFASs, namely chlorinated polyfluoroalkylether sulfonic acids, hexafluoropropylene oxide homologues and short-chain perfluoroalkyl acids attracted the most attention. It is, therefore, the goal of this review to systematically and critically analyse the toxicity and toxicological mechanisms of these ePFASs based on the papers published between 2017 and 2022. The review summarized the main findings from both in vivo and in vitro studies, covering the hepatotoxicity of ePFASs and their interference with the endocrine system, including reproductive, developmental and thyroid toxicity. It also summarized the changes in gene expression in the hypothalamic-pituitary-thyroid axis and hypothalamic-pituitary-gonad axis of the model organisms after ePFASs exposure. The changes in gene expression in vitro and in vivo provide a clearer understanding of the toxicological mechanisms of ePFASs interference on hormonal levels (i.e., estradiol, testosterone, and thyroid hormones), developmental disturbance (e.g., swim bladder dysfunction) and lipid metabolism disruption (e.g., lipid droplet accumulation and hepatomegaly). In the end, future research directions on the toxicological mechanisms of ePFASs are suggested.
    MeSH term(s) Humans ; Thyroid Gland/metabolism ; Thyroid Hormones/metabolism ; Testosterone/metabolism ; Estradiol/metabolism ; Gene Expression ; Fluorocarbons/toxicity ; Fluorocarbons/metabolism
    Chemical Substances Thyroid Hormones ; Testosterone (3XMK78S47O) ; Estradiol (4TI98Z838E) ; Fluorocarbons
    Language English
    Publishing date 2023-05-30
    Publishing country Ireland
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 184557-3
    ISSN 1879-3185 ; 0300-483X
    ISSN (online) 1879-3185
    ISSN 0300-483X
    DOI 10.1016/j.tox.2023.153566
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Emerging organophosphate ester resorcinol bis(diphenyl phosphate) exerts estrogenic effects via estrogen receptor pathways.

    Xie, Yue / Zhang, Qi / Chen, Lu / Li, Fangfang / Li, Minjie / Guo, Liang-Hong

    Toxicology

    2023  Volume 499, Page(s) 153649

    Abstract: Environmental occurrence and human exposure of emerging organophosphate esters (eOPEs) have increased significantly in recent years. Resorcinol bis(diphenyl) phosphate (RDP) is one of the major eOPEs detected in indoor dust, but the knowledge on its ... ...

    Abstract Environmental occurrence and human exposure of emerging organophosphate esters (eOPEs) have increased significantly in recent years. Resorcinol bis(diphenyl) phosphate (RDP) is one of the major eOPEs detected in indoor dust, but the knowledge on its toxicities and health risks is rather limited. In this study, we investigated the in vitro estrogenic effects and underlying mechanism of RDP in comparison with a legacy OPE triphenyl phosphate (TPHP). Our results showed that RDP promoted MCF-7 cell proliferation with the lowest effect concentration of 2.5 μM, and the maximum enhancement of 1.6 folds is greater than that of TPHP (1.3 folds). The effect was inhibited completely by an estrogen receptor (ER) antagonist, suggesting that ER activation was responsible for the enhancement. In luciferase reporter gene assays both RDP and TPHP activated ER transcriptional activity at 2.5 μM, but RDP activity was higher than TPHP. Competitive fluorescence binding assays showed that RDP bound to ER with an IC
    MeSH term(s) Humans ; Phosphates ; Receptors, Estrogen ; Estrogens/toxicity ; Molecular Docking Simulation ; Organophosphates/toxicity ; Resorcinols/toxicity ; Esters/toxicity ; Flame Retardants
    Chemical Substances Phosphates ; Receptors, Estrogen ; diphenyl (2L9GJK6MGN) ; Estrogens ; triphenyl phosphate (YZE19Z66EA) ; Organophosphates ; resorcinol (YUL4LO94HK) ; Resorcinols ; Esters ; Flame Retardants
    Language English
    Publishing date 2023-10-11
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 184557-3
    ISSN 1879-3185 ; 0300-483X
    ISSN (online) 1879-3185
    ISSN 0300-483X
    DOI 10.1016/j.tox.2023.153649
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Direct and gut microbiota-mediated toxicities of environmental antibiotics to fish and aquatic invertebrates.

    Li, Zhi / Lu, Tingyu / Li, Minjie / Mortimer, Monika / Guo, Liang-Hong

    Chemosphere

    2023  Volume 329, Page(s) 138692

    Abstract: The accumulation of antibiotics in the environment has ecological impacts that have received less attention than the human health risks of antibiotics, although the effects could be far-reaching. This review discusses the effects of antibiotics on the ... ...

    Abstract The accumulation of antibiotics in the environment has ecological impacts that have received less attention than the human health risks of antibiotics, although the effects could be far-reaching. This review discusses the effects of antibiotics on the health of fish and zooplankton, manifesting in direct or dysbiosis-mediated physiological impairment. Acute effects of antibiotics in these organism groups are usually induced at high concentrations (LC
    MeSH term(s) Animals ; Humans ; Anti-Bacterial Agents/toxicity ; Gastrointestinal Microbiome ; Dysbiosis ; Invertebrates ; Fishes ; Aquatic Organisms
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2023-04-12
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2023.138692
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Putative adverse outcome pathways of the male reproductive toxicity derived from toxicological studies of perfluoroalkyl acids

    Lü, Tingyu / Mortimer, Monika / Li, Fangfang / Li, Zhi / Chen, Lu / Li, Minjie / Guo, Liang-Hong

    Science of the Total Environment. 2023 May, v. 873 p.162439-

    2023  

    Abstract: Adverse outcome pathway (AOP) as a conceptual framework is a powerful tool in the field of toxicology to connect seemingly discrete events at different levels of biological organizations into an organized pathway from molecular interactions to whole ... ...

    Abstract Adverse outcome pathway (AOP) as a conceptual framework is a powerful tool in the field of toxicology to connect seemingly discrete events at different levels of biological organizations into an organized pathway from molecular interactions to whole organism toxicity. Based on numerous toxicological studies, eight AOPs for reproductive toxicity have been endorsed by the Organization for Economic Co-operation and Development (OECD) Task Force on Hazard Assessment. We have conducted a literature survey on the mechanistic studies on male reproductive toxicity of perfluoroalkyl acids (PFAAs), a class of global environmental contaminants with high persistence, bioaccumulation and toxicity. Using the AOP development strategy, five new AOPs for male reproductive toxicity were proposed here, namely (1) changes in membrane permeability leading to reduced sperm motility, (2) disruption of mitochondrial function leading to sperm apoptosis, (3) decreased gonadotropin-releasing hormone (GnRH) expression in hypothalamus leading to reduced testosterone production in male rats, (4) activation of the p38 signaling pathway leading to disruption of BTB in mice, (5) inhibition of p-FAK-Tyr407 activity leading to the destruction of BTB. The molecular initiating events in the proposed AOPs are different from those in the endorsed AOPs, which are either receptor activation or enzyme inhibition. Although some of the AOPs are still incomplete, they can serve as a building block upon which full AOPs can be developed and applied to not only PFAAs but also other chemical toxicants with male reproductive toxicity.
    Keywords adverse outcome pathways ; apoptosis ; bioaccumulation ; environment ; enzyme inhibition ; gonadotropin-releasing hormone ; hazard characterization ; hypothalamus ; males ; membrane permeability ; mitochondria ; perfluorocarbons ; pollution ; reproductive toxicology ; sperm motility ; spermatozoa ; surveys ; testosterone ; toxic substances ; toxicity ; Adverse outcome pathway ; Molecular initiating event ; Male reproductive system ; Perfluoroalkyl acids
    Language English
    Dates of publication 2023-05
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.162439
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: Functions and performance of ionic liquids in enhancing electrocatalytic hydrogen evolution reactions: a comprehensive review

    Chen, Kang / Xu, Bin / Shen, Linyu / Shen, Danhong / Li, Minjie / Guo, Liang-Hong

    RSC advances. 2022 July 06, v. 12, no. 30

    2022  

    Abstract: As a green and renewable energy source, hydrogen can be produced by the electrolysis of water via the hydrogen evolution reaction (HER). Nevertheless, this method requires efficient and low-cost electro-catalysts to improve hydrogen production efficiency. ...

    Abstract As a green and renewable energy source, hydrogen can be produced by the electrolysis of water via the hydrogen evolution reaction (HER). Nevertheless, this method requires efficient and low-cost electro-catalysts to improve hydrogen production efficiency. Ionic liquids (ILs), with a unique combination of such superior properties as low vapor pressure, high electrical conductivity, high electrochemical stability, and a wide variety of functional groups, have found applications in electrochemical systems designed for efficient HER. Herein, we provide a comprehensive and updated review on the functions and performance of ILs used in electrochemical systems to enhance the HER. As the name suggests, ILs have been employed either as electrolytes by themselves, or as electrolyte additives. They also played many functional roles in the synthesis of HER electrocatalysts, including as the synthesis reaction solvent, reaction precursor as well as single/dual ion sources, binder and structure-directing agents of the catalysts. With the assistance of ILs, HER efficiency of electrocatalysts was improved significantly, resulting in decreased overpotentials in the range of 16–385 mV @ 10 mA cm⁻² and increased Tafel slopes in the range of 30–210 mV dec⁻¹. Lastly, the problems and challenges of ILs in electrocatalytic water electrolysis and HER are also discussed and their prospects considered.
    Keywords electrical conductivity ; electrochemistry ; electrolysis ; electrolytes ; hydrogen ; hydrogen production ; renewable energy sources ; vapor pressure
    Language English
    Dates of publication 2022-0706
    Size p. 19452-19469.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/d2ra02547g
    Database NAL-Catalogue (AGRICOLA)

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