The increasing occurrence of emerging chemicals of concern in the environment has caused high public attention. Assessing their hematologic toxicities is of high priority, as the blood circulation system is usually essential in transporting these exogenous substances to diverse target tissues in vivo. The plasma kallikrein-kinin system (KKS) is one of the most abundant protease enzyme systems and regulates a series of crucial hematologic functions. As a vulnerable target, the KKS may sensitively respond to circulatory pollutants, and combing the current studies on the interaction of the environmental contaminants with the KKS would help understand the toxicological or pathological significance of this system.
Recent Findings
The current studies have revealed that some environmental contaminants, such as small molecular organic chemicals, engineered nanoparticles (NPs), and atmospheric fine particulate matter (PM), can directly interact with the KKS, causing the autoactivation of the Hageman factor XII (FXII), the subsequent cascade cleavage of the plasma prekallikrein (PPK), and high molecular kininogen (HK). The consequent downstream hematological effects and other related toxicities can be concomitantly induced via the crosstalk with the KKS. In addition, multiple approaches, based on in vitro, ex vivo, and in vivo experimental models, have been developed to characterize the binding of exogenous substances with FXII, conformational changes of the protein, the cascade activation of the KKS, and downstream toxicological or pathological responses.
Summary
As a vulnerable target, the plasma KKS sensitively responds to the exposure of environmental pollutants and is promising for biomonitoring hematotoxicity in future studies.
{"title":"The Plasma Kallikrein-Kinin System: A Hematological Target for Environmental Contaminants","authors":"Yurou Gao, Yuzhu Zhang, Zhiwen Li, Qian S. Liu, Qunfang Zhou, Guibin Jiang","doi":"10.1007/s40726-024-00308-8","DOIUrl":"https://doi.org/10.1007/s40726-024-00308-8","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose of Review</h3><p>The increasing occurrence of emerging chemicals of concern in the environment has caused high public attention. Assessing their hematologic toxicities is of high priority, as the blood circulation system is usually essential in transporting these exogenous substances to diverse target tissues in vivo. The plasma kallikrein-kinin system (KKS) is one of the most abundant protease enzyme systems and regulates a series of crucial hematologic functions. As a vulnerable target, the KKS may sensitively respond to circulatory pollutants, and combing the current studies on the interaction of the environmental contaminants with the KKS would help understand the toxicological or pathological significance of this system.</p><h3 data-test=\"abstract-sub-heading\">Recent Findings</h3><p>The current studies have revealed that some environmental contaminants, such as small molecular organic chemicals, engineered nanoparticles (NPs), and atmospheric fine particulate matter (PM), can directly interact with the KKS, causing the autoactivation of the Hageman factor XII (FXII), the subsequent cascade cleavage of the plasma prekallikrein (PPK), and high molecular kininogen (HK). The consequent downstream hematological effects and other related toxicities can be concomitantly induced via the crosstalk with the KKS. In addition, multiple approaches, based on in vitro, ex vivo, and in vivo experimental models, have been developed to characterize the binding of exogenous substances with FXII, conformational changes of the protein, the cascade activation of the KKS, and downstream toxicological or pathological responses.</p><h3 data-test=\"abstract-sub-heading\">Summary</h3><p>As a vulnerable target, the plasma KKS sensitively responds to the exposure of environmental pollutants and is promising for biomonitoring hematotoxicity in future studies.</p>","PeriodicalId":528,"journal":{"name":"Current Pollution Reports","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-04DOI: 10.1007/s40726-024-00313-x
Robert B. Hood, Sarahna Moyd, Susan Hoffman, Sabrina S. Chow, Youran Tan, Priyanka Bhanushali, Yilin Wang, Kasthuri Sivalogan, Audrey J. Gaskins, Donghai Liang
Air pollution and the various chemicals that are a part of this complex mixture have been associated with several adverse infant health outcomes. One major area of research is describing the underlying biological mechanism between air pollution and adverse infant health outcomes. Metabolomics, a new omics field, studies small molecules present in a biological matrix and may provide insight into underlying biological mechanism. We conducted a narrative review of the literature to identify studies utilizing metabolomics with air pollution, or some potential component of it, and adverse infant health. We identified seven studies that met our inclusion criteria. These studies described a range of potential air pollutants including tobacco smoke, PAH, NO2, PM2.5, O3, BC, heavy metals, and PFAS. The studies mainly focused on gestational age and weight outcomes. Metabolic analysis revealed many altered metabolomic pathways including those related to amino acid metabolism, glycan metabolism, lipid metabolism, and cofactor and vitamin metabolism. These studies provide valuable insight into the potential biological mechanisms that underpin the association between air pollution and adverse gestational outcomes. Future studies should utilize longitudinal study design and use complex mixture analysis for air pollution exposure assessment, as well as focus on the use of more toxicologically relevant target tissue for infant health outcomes.
{"title":"Metabolomics Application in Understanding the Link Between Air Pollution and Infant Health Outcomes: A Narrative Review","authors":"Robert B. Hood, Sarahna Moyd, Susan Hoffman, Sabrina S. Chow, Youran Tan, Priyanka Bhanushali, Yilin Wang, Kasthuri Sivalogan, Audrey J. Gaskins, Donghai Liang","doi":"10.1007/s40726-024-00313-x","DOIUrl":"https://doi.org/10.1007/s40726-024-00313-x","url":null,"abstract":"<p>Air pollution and the various chemicals that are a part of this complex mixture have been associated with several adverse infant health outcomes. One major area of research is describing the underlying biological mechanism between air pollution and adverse infant health outcomes. Metabolomics, a new omics field, studies small molecules present in a biological matrix and may provide insight into underlying biological mechanism. We conducted a narrative review of the literature to identify studies utilizing metabolomics with air pollution, or some potential component of it, and adverse infant health. We identified seven studies that met our inclusion criteria. These studies described a range of potential air pollutants including tobacco smoke, PAH, NO<sub>2</sub>, PM<sub>2.5</sub>, O<sub>3</sub>, BC, heavy metals, and PFAS. The studies mainly focused on gestational age and weight outcomes. Metabolic analysis revealed many altered metabolomic pathways including those related to amino acid metabolism, glycan metabolism, lipid metabolism, and cofactor and vitamin metabolism. These studies provide valuable insight into the potential biological mechanisms that underpin the association between air pollution and adverse gestational outcomes. Future studies should utilize longitudinal study design and use complex mixture analysis for air pollution exposure assessment, as well as focus on the use of more toxicologically relevant target tissue for infant health outcomes.</p>","PeriodicalId":528,"journal":{"name":"Current Pollution Reports","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-04DOI: 10.1007/s40726-024-00303-z
Margret S. Engel, Robert J. Young, William J. Davies, David Waddington, Michael D. Wood
Purpose of Review
This review collates and analyses data on noise exposure of birds in relation to avian hearing system performance. It provides new insights into the mechanistic pathways of anthropogenic noise impact on avian species.
Recent Findings
Noise impacts both humans and wildlife. Birds are of conservation concern, given the recent reports of major global declines in bird populations and that one in eight bird species is threatened with extinction. Studies of noise impacts on birds have been, and continue to be, published. Whilst many of these studies report associations between noise and a response in birds, relatively few provide clear demonstration of the mechanisms of impact.
Summary
Anatomical and physiological datasets were compiled for species representing nineteen avian orders. Information on noise sources, propagation path and habitat selection was also collated. Bird order was not a good predictor of bird hearing frequencies, but body dimensions were. In general, smaller birds were found to have higher peak hearing frequencies than larger birds. Cranium height was the strongest predictor of peak hearing frequency for birds. These findings provide mechanistic context to noise impacts on birds and a potential basis for predicting responses of avian species to different noise environments.
{"title":"Defining Mechanistic Pathways for Anthropogenic Noise Impact on Avian Species","authors":"Margret S. Engel, Robert J. Young, William J. Davies, David Waddington, Michael D. Wood","doi":"10.1007/s40726-024-00303-z","DOIUrl":"https://doi.org/10.1007/s40726-024-00303-z","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose of Review</h3><p>This review collates and analyses data on noise exposure of birds in relation to avian hearing system performance. It provides new insights into the mechanistic pathways of anthropogenic noise impact on avian species.</p><h3 data-test=\"abstract-sub-heading\">Recent Findings</h3><p>Noise impacts both humans and wildlife. Birds are of conservation concern, given the recent reports of major global declines in bird populations and that one in eight bird species is threatened with extinction. Studies of noise impacts on birds have been, and continue to be, published. Whilst many of these studies report associations between noise and a response in birds, relatively few provide clear demonstration of the mechanisms of impact.</p><h3 data-test=\"abstract-sub-heading\">Summary</h3><p>Anatomical and physiological datasets were compiled for species representing nineteen avian orders. Information on noise sources, propagation path and habitat selection was also collated. Bird order was not a good predictor of bird hearing frequencies, but body dimensions were. In general, smaller birds were found to have higher peak hearing frequencies than larger birds. Cranium height was the strongest predictor of peak hearing frequency for birds. These findings provide mechanistic context to noise impacts on birds and a potential basis for predicting responses of avian species to different noise environments.</p>","PeriodicalId":528,"journal":{"name":"Current Pollution Reports","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-29DOI: 10.1007/s40726-024-00310-0
Anil Kumar Singh, Roberto Fernandez-Lafuente, Jens Ejbye Schmidt, Grzegorz Boczkaj, Muhammad Bilal
Purpose of Review
In the presented review, we have summarized and highlighted recent developments in the use of lignin peroxidase (LiP) to remove a variety of pollutants from water matrices. The high redox potential of LiP is underlined by its excellent catalytic functionalities in the elimination of pharmaceuticals, phenolics, dyes, polycyclic aromatic hydrocarbons (PAHs), endocrine-disrupting chemicals (EDCs), and other miscellaneous pollutants. LiP-based computational frameworks for theoretical bioremediation of multiple pollutants have also been discussed, which have prompted a rise in scientific interest.
Recent Findings
According to current studies, both free and immobilized LiPs are biocatalysts capable of efficient pollutant degradation and LMW transformation. Some immobilized LiP preparations demonstrated excellent recyclability, enabling its reusability in multiple catalytic cycles. Additionally, computational degradability makes it easier to comprehend the mechanisms underlying the degradation of recalcitrant pollutants.
Summary
The capacity of LiP to cleave C–C and C–O–C bonds has led to its widespread application as a biocatalyst. Its outstanding potential to catalyze oxidative cleavage has been effectively used in the remediation of pollutants without needing mediators. Nevertheless, we brought attention to the current LiP system in pollutants remediation and computational framework, which has generated a significant rise in scientific interest.
{"title":"Biocatalytic Functionalities of Lignin Peroxidase-Based Systems in Lignin Depolymerization and Pollutants Removal from Environmental Matrices","authors":"Anil Kumar Singh, Roberto Fernandez-Lafuente, Jens Ejbye Schmidt, Grzegorz Boczkaj, Muhammad Bilal","doi":"10.1007/s40726-024-00310-0","DOIUrl":"https://doi.org/10.1007/s40726-024-00310-0","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose of Review</h3><p>In the presented review, we have summarized and highlighted recent developments in the use of lignin peroxidase (LiP) to remove a variety of pollutants from water matrices. The high redox potential of LiP is underlined by its excellent catalytic functionalities in the elimination of pharmaceuticals, phenolics, dyes, polycyclic aromatic hydrocarbons (PAHs), endocrine-disrupting chemicals (EDCs), and other miscellaneous pollutants. LiP-based computational frameworks for theoretical bioremediation of multiple pollutants have also been discussed, which have prompted a rise in scientific interest.</p><h3 data-test=\"abstract-sub-heading\">Recent Findings</h3><p>According to current studies, both free and immobilized LiPs are biocatalysts capable of efficient pollutant degradation and LMW transformation. Some immobilized LiP preparations demonstrated excellent recyclability, enabling its reusability in multiple catalytic cycles. Additionally, computational degradability makes it easier to comprehend the mechanisms underlying the degradation of recalcitrant pollutants.</p><h3 data-test=\"abstract-sub-heading\">Summary</h3><p>The capacity of LiP to cleave C–C and C–O–C bonds has led to its widespread application as a biocatalyst. Its outstanding potential to catalyze oxidative cleavage has been effectively used in the remediation of pollutants without needing mediators. Nevertheless, we brought attention to the current LiP system in pollutants remediation and computational framework, which has generated a significant rise in scientific interest.</p>","PeriodicalId":528,"journal":{"name":"Current Pollution Reports","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1007/s40726-024-00309-7
Zijun Zhang, Weiqi Xu, Andrew T. Lambe, Weiwei Hu, Tengyu Liu, Yele Sun
Purpose of Review
This review aims to provide a comprehensive examination of oxidation flow reactor (OFR) studies and their applications in both laboratory and field investigations. OFRs play a crucial role in understanding secondary organic aerosol (SOA) formation and aging processes in the atmosphere. By evaluating the advancements and limitations of OFR technology, this review seeks to identify key research directions and challenges for future studies in atmospheric chemistry and air quality research.
Recent Findings
In recent years, OFR has emerged as an encouraging alternative to smog chambers for SOA study. The high oxidative capacity and short residence time of OFR enable its wide application in both laboratory and field studies. Research utilizing OFR has uncovered the critical role of semi-volatile and intermediate-volatility organic compounds (S/IVOCs) in the formation of SOA from various sources, including vehicle emissions, biomass burning, cooking activities, and non-traditional emissions such as volatile chemical products. Notably, field studies have observed considerable variability in the SOA formation potential across different environments globally, generally showing higher formation potential in urban areas compared to rural and forest regions.
Summary
OFR studies have significantly advanced our understanding of SOA formation and aging processes, identifying key precursors, evaluating influencing factors, and quantifying SOA formation potential. However, challenges remain in unraveling detailed mechanisms due to the complexity of SOA sources and properties. Future OFR research should focus on innovations in OFR design, study non-traditional emissions, conduct long-term field observations, develop standardized calibration procedures, and establish SOA yield parameterization schemes for S/IVOCs.
综述目的 本综述旨在全面审查氧化流动反应器 (OFR) 研究及其在实验室和实地调查中的应用。氧化流动反应器在了解大气中二次有机气溶胶 (SOA) 的形成和老化过程方面发挥着至关重要的作用。通过评估 OFR 技术的进步和局限性,本综述旨在确定大气化学和空气质量研究领域未来研究的关键研究方向和挑战。OFR 的氧化能力强、停留时间短,因此可广泛应用于实验室和实地研究。利用 OFR 进行的研究发现,半挥发性和中等挥发性有机化合物(S/IVOC)在各种来源(包括汽车尾气排放、生物质燃烧、烹饪活动以及挥发性化学产品等非传统排放物)的 SOA 形成过程中起着至关重要的作用。值得注意的是,实地研究观察到,全球不同环境中的 SOA 形成潜力存在相当大的差异,一般来说,城市地区的形成潜力高于农村和森林地区。然而,由于 SOA 来源和特性的复杂性,在揭示详细机制方面仍存在挑战。未来的 OFR 研究应侧重于 OFR 设计的创新、研究非传统排放物、进行长期实地观测、开发标准化校准程序,以及为 S/IVOCs 建立 SOA 产量参数化方案。
{"title":"Insights Into Formation and Aging of Secondary Organic Aerosol From Oxidation Flow Reactors: A Review","authors":"Zijun Zhang, Weiqi Xu, Andrew T. Lambe, Weiwei Hu, Tengyu Liu, Yele Sun","doi":"10.1007/s40726-024-00309-7","DOIUrl":"https://doi.org/10.1007/s40726-024-00309-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose of Review</h3><p>This review aims to provide a comprehensive examination of oxidation flow reactor (OFR) studies and their applications in both laboratory and field investigations. OFRs play a crucial role in understanding secondary organic aerosol (SOA) formation and aging processes in the atmosphere. By evaluating the advancements and limitations of OFR technology, this review seeks to identify key research directions and challenges for future studies in atmospheric chemistry and air quality research.</p><h3 data-test=\"abstract-sub-heading\">Recent Findings</h3><p>In recent years, OFR has emerged as an encouraging alternative to smog chambers for SOA study. The high oxidative capacity and short residence time of OFR enable its wide application in both laboratory and field studies. Research utilizing OFR has uncovered the critical role of semi-volatile and intermediate-volatility organic compounds (S/IVOCs) in the formation of SOA from various sources, including vehicle emissions, biomass burning, cooking activities, and non-traditional emissions such as volatile chemical products. Notably, field studies have observed considerable variability in the SOA formation potential across different environments globally, generally showing higher formation potential in urban areas compared to rural and forest regions.</p><h3 data-test=\"abstract-sub-heading\">Summary</h3><p>OFR studies have significantly advanced our understanding of SOA formation and aging processes, identifying key precursors, evaluating influencing factors, and quantifying SOA formation potential. However, challenges remain in unraveling detailed mechanisms due to the complexity of SOA sources and properties. Future OFR research should focus on innovations in OFR design, study non-traditional emissions, conduct long-term field observations, develop standardized calibration procedures, and establish SOA yield parameterization schemes for S/IVOCs.</p>","PeriodicalId":528,"journal":{"name":"Current Pollution Reports","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140610097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Different drying methods can cause errors in determining the content and evaluating the biological effectiveness of various forms of phosphorus (P) in sediment. The drying pretreatment effectively promotes the conversion of amorphous iron and aluminium oxides to their crystalline form, which ultimately impacts the adsorption capabilities of sediment. However, limited research has been conducted in this field previously. Sediments from the Weiyuan River, Baoenqiao Reservoir, and Honghu Lake in China were pretreated using freeze-drying, air-drying, and oven-drying methods. The effects of pretreatment methods on P were evaluated through P fractionation and isothermal adsorption experiments. The study also investigated the proportion and amount of amorphous iron and aluminium (Feox and Alox) transformed into crystalline forms.
Recent Findings
The results revealed that drying pretreatment markedly increased the potentially bioavailable P(BAP) (6.73%). This increase can be attributed to the rise in loosely-bound P (48.30%) and P bound to metal oxides (9.51%), which are predominant contributors to BAP. Furthermore, sediment adsorption performance significantly decreases after drying pretreatment. This is due to the reduced content of Feox (64.02%) and Alox (36.61%), which exhibit higher P adsorption capacity. Additionally, drying led to a significant reduction in SPmax (25.09%) and PSI (28.20%), along with an increase in EPC0 (24.96%) and DPS (6.83%).
Summary
Different drying treatments affected the P forms and sorption properties of the sediment to varying degrees, with the overall effect being oven-drying > air-drying > freeze-drying > fresh samples. Consequently, when fresh sediment is not available for laboratory analysis, freeze-drying may be a more realistic method for characterizing P properties.