Environment International最新文献

{"title":"Potential mechanisms of synthetic endophytic bacterial community to reduce PAHs accumulation in vegetables","authors":"Pengfei Li ,&nbsp;Xian Zhou ,&nbsp;Tong Wei,&nbsp;Jian Wang,&nbsp;Yanzheng Gao","doi":"10.1016/j.envint.2024.109129","DOIUrl":"10.1016/j.envint.2024.109129","url":null,"abstract":"<div><div>The functional endophytic bacterial community can effectively degrade polycyclic aromatic hydrocarbons (PAHs), thereby reducing their accumulation in vegetables grown on contaminated sites. However, the biological mechanisms underlying this reduction remain unclear. In this study, we analyzed the efficacy of different colonization methods of the functional endophytic bacterial community m5 in reducing PAHs in vegetables, with a particular focus on the leaf painting method. The results demonstrated that various colonization methods effectively reduced PAHs in vegetables, with leaf painting proving to be a cost-effective and efficient approach. Compared to the non-inoculated control, PAH content in the edible parts of amaranth was reduced by 40.63 % using the leaf painting method. High-throughput sequencing and quantitative PCR revealed that leaf painting altered the bacterial community structure and key components of the bacterial network, enhancing bacterial cooperation. After 20 days of colonization, the abundance of <em>phe</em> and <em>nidA</em> genes in vegetables increased significantly, by tens to hundreds of times, compared to uninoculated controls, thereby promoting the degradation of PAHs in vegetables. This study enhances our understanding of the biological mechanisms by which endophytic bacterial communities reduce PAHs in vegetables.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"194 ","pages":"Article 109129"},"PeriodicalIF":10.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply to Canu: Correspondence with reference to the review “Indoor Air Quality in Subway Microenvironments”","authors":"Shunyao Wang ,&nbsp;Ran Tu","doi":"10.1016/j.envint.2024.109142","DOIUrl":"10.1016/j.envint.2024.109142","url":null,"abstract":"","PeriodicalId":308,"journal":{"name":"Environment International","volume":"194 ","pages":"Article 109142"},"PeriodicalIF":10.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of individual external exposure doses based on environmental radiation in areas affected by the Fukushima Daiichi Nuclear Power Station accident","authors":"Rina Sato ,&nbsp;Kazuya Yoshimura ,&nbsp;Yukihisa Sanada ,&nbsp;Satoshi Mikami ,&nbsp;Tsutomu Yamada ,&nbsp;Takamasa Nakasone ,&nbsp;Seiichi Kanaizuka ,&nbsp;Tetsuro Sato ,&nbsp;Tsubasa Mori ,&nbsp;Marie Takagi","doi":"10.1016/j.envint.2024.109148","DOIUrl":"10.1016/j.envint.2024.109148","url":null,"abstract":"<div><div>Assessing individual external exposure doses from ambient dose equivalents is valuable for predictive and retrospective purposes when personal dosimeters are impractical. This study developed a model to assess individual external exposure doses from ambient dose equivalents, considering daily life patterns (location and time spent in various places), and evaluated parameters associated with individual external exposure doses, such as the reduction effects of radiation due to buildings and vehicles. The model parameters were evaluated using the robust datasets of environmental radiation measured in areas affected by the Fukushima Daiichi Nuclear Power Station (FDNPS) accident. The effective dose estimated by the model was compared to 106 daily personal dose equivalents measured using personal dosimeters in the residents’ living environments near the FDNPS. The estimated effective dose well consists with the measured personal dose equivalents, particularly when considering natural radiation in indoor dose estimation. This model is adequate for radiation protection, enabling the predictive and retrospective estimation of individual external exposure doses using environmental radiation monitoring data.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"194 ","pages":"Article 109148"},"PeriodicalIF":10.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prenatal exposure to per- and polyfluoroalkyl substances (PFAS) and their influence on inflammatory biomarkers in pregnancy: Findings from the LIFECODES cohort","authors":"Ram C. Siwakoti ,&nbsp;Sean M. Harris ,&nbsp;Kelly K. Ferguson ,&nbsp;Wei Hao ,&nbsp;David E. Cantonwine ,&nbsp;Bhramar Mukherjee ,&nbsp;Thomas F. McElrath ,&nbsp;John D. Meeker","doi":"10.1016/j.envint.2024.109145","DOIUrl":"10.1016/j.envint.2024.109145","url":null,"abstract":"<div><h3>Background</h3><div>Per- and polyfluoroalkyl substances (PFAS) are fluorinated chemicals linked to adverse pregnancy and birth outcomes. However, the underlying mechanisms, specifically their effects on maternal inflammatory processes, are not well characterized.</div></div><div><h3>Objective</h3><div>We examined associations between prenatal PFAS exposure and repeated measures of inflammatory biomarkers, including C-reactive protein (CRP) and four cytokines [Interleukin-10 (IL-10), IL-1β, IL-6, and tumor necrosis factor-α (TNF-α)].</div></div><div><h3>Methods</h3><div>We analyzed data from 469 pregnant women in a nested case-control study of preterm birth at Brigham and Women’s Hospital in Boston, Massachusetts (2006–2008). We measured nine PFAS in early pregnancy plasma samples (median gestation: 10 weeks), with inflammatory biomarkers measured at median gestations of 10, 18, 26, and 35 weeks. We used linear mixed models for repeated measures and multivariable regression for visit-specific analysis to examine associations between each PFAS and inflammation biomarker, adjusting for maternal demographics, pre-pregnancy BMI, and parity. We examined the effects of PFAS mixture using sum of all PFAS (<span><math><mrow><mo>∑</mo><mi>P</mi><mi>F</mi><mi>A</mi><mi>S</mi></mrow></math></span>) and quantile-based g-computation approaches.</div></div><div><h3>Results</h3><div>We observed consistent inverse associations between most PFAS and cytokines, specifically IL-10, IL-6, and TNF-α, in both single pollutant and mixture analyses. For example, an interquartile range increase in perfluorooctanesulfonic acid was associated with −10.87 (95% CI: −19.75, −0.99), −13.91 (95% CI: −24.11, −2.34), and −8.63 (95% CI: −14.51, −2.35) percent change in IL-10, IL-6, and TNF-α levels, respectively. Fetal sex, maternal race, and visit-specific analyses showed associations between most PFAS and cytokines were generally stronger in mid-pregnancy and among women who delivered males or identified as African American.</div></div><div><h3>Conclusions</h3><div>The observed suppression of both regulatory (IL-10) and pro-inflammatory (TNF-α) cytokines suggests that PFAS may alter maternal inflammatory processes or immune functions during pregnancy. Further research is needed to understand the effects of both legacy and newer PFAS on inflammatory pathways and their broader clinical implications.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"194 ","pages":"Article 109145"},"PeriodicalIF":10.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-omics profiling reveals elevated CO2-enhanced tolerance of Trifolium repens L. to lead stress through environment-plant-microbiome interactions","authors":"Lei Wang ,&nbsp;Sui Wang ,&nbsp;Haifeng Su ,&nbsp;Hongguang Cai ,&nbsp;Yankun Song ,&nbsp;Xiang Gong ,&nbsp;Zhihui Sun ,&nbsp;Jianhua Qu ,&nbsp;Ying Zhang","doi":"10.1016/j.envint.2024.109150","DOIUrl":"10.1016/j.envint.2024.109150","url":null,"abstract":"<div><div>The increasing atmospheric CO₂ resulting from human activities over the past two centuries, which is projected to persist, has significant implications for plant physiology. However, our predictive understanding of how elevated CO₂ (eCO₂) modifies plant tolerance to metal stress remains limited. In this study, we collected roots and rhizosphere soils from <em>Trifolium repens</em> L. subjected to lead (Pb) stress under ambient and elevated CO₂ conditions, generating transcriptomic data for roots, microbiota data for rhizospheres, and conducting comprehensive multi-omics analyses. Our findings show that eCO₂ reduced the accumulation of Pb-induced reactive oxygen species (ROS) and promoted plant growth by 72% to 402%, as well as increases shoot Pb uptake by 79% compared to ambient CO₂. Additionally, eCO₂ triggers specific defense response in <em>T. repens</em>, elevating the threshold for stress response. We observed a adaptive reconfiguration of transcriptional network that enhances energy efficiency and optimizes photosynthetic product utilization. Notably, eCO₂ induces salicylic acid biosynthesis and activates defense pathways related to redox balance and ROS scavenging processes, thereby enhancing abiotic stress resistance. Through weighted gene co-expression network analysis, our comprehensive investigation reveals a holistic regulatory network encompassing plant traits, gene expression patterns, and bacterial structure potentially linked to metal accumulation as well as tradeoffs between growth and defense in plants under elevated CO₂. These insights shed light on the plant stress responses under elevated CO₂ and while contributing to a broader comprehension of plant-environment interactions.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"194 ","pages":"Article 109150"},"PeriodicalIF":10.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PFAS exposure is associated with an unfavourable metabolic profile in infants six months of age","authors":"Anne-Lise Bjørke-Monsen ,&nbsp;Kristin Holstad ,&nbsp;Sandra Huber ,&nbsp;Maria Averina ,&nbsp;Bjørn Bolann ,&nbsp;Jan Brox","doi":"10.1016/j.envint.2024.109121","DOIUrl":"10.1016/j.envint.2024.109121","url":null,"abstract":"<div><div>Exposure to perfluoroalkyl substances (PFAS) are reported to have numerous negative health effects and children are especially vulnerable. The aim of this study was to investigate whether maternal and infant PFAS burden have any impact on prenatal and postnatal growth, liver and lipid parameters in infants at age six months. Data on diet and growth parameters, as well as blood samples were collected from healthy pregnant women in week 18 and in the women and their infants at six months postpartum. The blood samples were analysed for liver enzymes, blood lipids and PFAS. Maternal perfluoroalkyl carboxylic acids (PFCA) and fish for dinner ≥ 3 days per week in pregnancy week 18 were associated with reduced birth weight and increased percent weight gain the first six months of life. Infant PFCA concentrations were positively associated with serum alanine aminotransferase and total- and LDL-cholesterol concentrations at six months of age. Our data demonstrate that prenatal and postnatal PFAS exposure are associated with an unfavourable metabolic profile at a very young age. This pattern is concerning as it may be linked to early conditioning of later metabolic disease. It is vital to reduce PFAS exposure in women of fertile age in order to prevent development of metabolic disease in the next generation.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109121"},"PeriodicalIF":10.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142562260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light-duty gasoline vehicle emission deterioration insights from large-scale inspection/maintenance data: The synergistic impact of usage characteristics","authors":"Xiangrui Meng ,&nbsp;Kaili Pang ,&nbsp;Yu Zhan ,&nbsp;Maohua Wang ,&nbsp;Wei Li ,&nbsp;Yongdong Wang ,&nbsp;Ji Zhang ,&nbsp;Yi Xu","doi":"10.1016/j.envint.2024.109119","DOIUrl":"10.1016/j.envint.2024.109119","url":null,"abstract":"<div><div>Accurately estimating vehicle emissions is crucial for effective air quality management. As key data for emission inventory construction, emission factors (EFs) are influenced by vehicle usage characteristics and experience deterioration. Current deterioration models often employ single-factor approaches based on vehicle age or accumulated mileage, which fail to capture the effects of varying usage intensities within the same mileage or age intervals. This study addressed this limitation by developing a novel emission deterioration model that incorporates multi-dimensional usage characteristics and that utilizes a large-scale inspection and maintenance (I/M) dataset for light-duty gasoline vehicles (LDGVs). The modeling results reveal distinct deterioration patterns for different pollutants and highlight the synergistic effects of the usage duration and intensity: natural aging significantly impacts HC and NOx emissions, while CO emissions are more strongly affected by intensive use. Specifically, China V LDGVs that were driven 4 × 10⁴ km/yr exhibited HC, CO, and NOx deterioration rates per mile that were approximately 4.1 % lower, 10.3 % higher, and 1.1 % higher, respectively, than those of vehicles driven 2 × 10⁴ km/yr as the mileage increased from 5 × 10⁴ km to 10 × 10⁴ km. By leveraging timely emission data and explicitly accounting for usage intensity, this study corrected biases in local emission estimates by 5–85 % with respect to estimates from commonly used models. This framework enables the development of more effective control strategies and refinements to policy evaluations in megacities with I/M programs.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109119"},"PeriodicalIF":10.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A precursor of Aflatoxin B1, Versicolorin A, impairs the mitochondrial function of human intestinal Caco-2 cells","authors":"Thierry Gauthier,&nbsp;Sylvie Puel,&nbsp;Ophelie Rocher ,&nbsp;Isabelle P. Oswald,&nbsp;Olivier Puel","doi":"10.1016/j.envint.2024.109107","DOIUrl":"10.1016/j.envint.2024.109107","url":null,"abstract":"<div><div>Versicolorin A (VERA) is a mycotoxin produced by <em>Aspergillus</em> section <em>Flavi</em> species that is frequently detected in foodstuffs, particularly in corn. VERA is a precursor of aflatoxin B₁ (AFB₁), which is currently considered to be the most hazardous mycotoxin. While AFB₁ has been shown to impair oxidative phosphorylation (OXPHOS), the impact of VERA on mitochondrial function has not been extensively documented until now. The aim of the present study was to investigate the effect of VERA on mitochondrial function in intestinal Caco-2 cells. To this end, OXPHOS was assessed by measuring the oxygen consumption rate using the Seahorse™ real-time analyzer. In contrast to AFB₁, a low concentration of VERA (5 µM) was a strong uncoupler of OXPHOS and inhibited respiratory complexes I and III within a few minutes of exposure. After 24 h of exposure, VERA reduced the transcription of all mitochondrial genes encoding proteins involved in the electron transfer chain as well as decreasing the rate of OXPHOS. This effect was associated with the simultaneous down expression of two genes encoding proteins involved in the initiation phase of mitochondrial DNA transcription: POLRMT and TFB2M. Moreover, VERA induced down expression of genes coding for upstream key glycolytic enzymes, hexokinase and phosphofructokinase. These effects led to a reduced rate of ATP production associated with a cytotoxic effect. Given the significant implications of mitochondrial dysfunction for human health, it is crucial to consider the potential involvement of VERA in mitochondrial diseases.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109107"},"PeriodicalIF":10.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142520056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mitigating environmental toxicity with hydrogen nanobubbles: A mitochondrial function-based approach to ecological restoration","authors":"Han Bao ,&nbsp;You Zhang ,&nbsp;Shuang Lv ,&nbsp;Shu Liu ,&nbsp;Wenhong Fan","doi":"10.1016/j.envint.2024.109126","DOIUrl":"10.1016/j.envint.2024.109126","url":null,"abstract":"<div><div>In biological systems, nanobubbles (NBs) effectively enhance hydrogen molecule retention and scavenging reactive oxygen species (ROS), but the underlying mechanisms remain elusive. To investigate this, we prepared hydrogen NB water samples with consistent dissolved hydrogen levels but varying NB densities to explore their physicochemical properties and effects on green algae (<em>Chlorella vulgaris</em>) under oxidative stress induced by copper ions (Cu²⁺) and cadmium ions (Cd²⁺). The results indicated a strong correlation between the hydrogen NB number density and the 25 % inhibitory concentration of Cu²⁺ over 24 h, with ROS removal efficiency increased with the NB number density. Gas chromatography showed that the hydrogen NBs in the solution had a high gas density that enhanced hydrogen transport into <em>C. vulgaris</em>. With regard to mitochondrial activity, hydrogen NBs were observed to enhance the function of mitochondrial complexes I and V and increase the mitochondrial membrane potential. Experiments with <em>C. vulgaris</em> mitochondrial electrodes showed that the electron transfer rates increased significantly in the presence of hydrogen NBs. We concluded that the high gas density of hydrogen NBs augments intracellular hydrogen delivery and strengthens mitochondrial functions.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109126"},"PeriodicalIF":10.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil metabolic processes influenced by rice roots co-regulates the environmental evolution of antibiotic resistome","authors":"Bingjun Han ,&nbsp;Fengxia Yang ,&nbsp;Shizhou Shen ,&nbsp;Zhonghan Li ,&nbsp;Keqiang Zhang","doi":"10.1016/j.envint.2024.109116","DOIUrl":"10.1016/j.envint.2024.109116","url":null,"abstract":"<div><div>Plant root activities lead to significant differences in metabolites between the rhizosphere and non-rhizosphere soil, profoundly affecting microbial distribution. However, how this process drives the migration and propagation of manure-derived antibiotic resistance genes (ARGs) in farmland ecosystems remains unclear. Herein, we used a rice pot microcosm experiment to explore the characteristics of antibiotic resistome and bacterial communities in rhizosphere and non-rhizosphere soils and the driving effects of rhizosphere metabolites on ARG propagation. The results showed significant differences in some ARGs and bacterial diversity in rhizosphere and non-rhizosphere soils with varied differential ARGs between different growth stages of rice (<em>P</em> &lt; 0.05). The biosynthesis of secondary metabolites and glutathione metabolism were found to be the main pathways affecting ARG differences in rhizosphere and non-rhizosphere soils under manure application. Structural equation modeling (SEM) analysis further indicated that ARG distribution differences between rhizosphere and non-rhizosphere soils were mainly regulated by differential metabolites, which influenced the ARG distribution by altering the succession of soil microbial communities. These results demonstrate the role of differential metabolites resulting from rice root activities in co-regulating ARG distribution, providing new insights into the regulatory mechanisms of soil ARG dynamics in paddy fields.</div></div>","PeriodicalId":308,"journal":{"name":"Environment International","volume":"193 ","pages":"Article 109116"},"PeriodicalIF":10.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}