Environmental Pollution最新文献_第3页

Polystyrene microplastics and cypermethrin exposure interfered the complexity of antibiotic resistance genes and induced metabolic dysfunction in the gut of adult zebrafish

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-19 DOI: 10.1016/j.envpol.2025.126288

Chanlin Fang , Jinhui Zhu , Haigui Xu , Minrong Qian , Yuanxiang Jin

Environmental pollutants such as microplastics (MPs) and pesticides are becoming prevalent in aquatic ecosystems, posing risks to wildlife and human health. This study investigated the toxicological effects of polystyrene microplastics (PS-MPs) and cypermethrin (CYP) on adult female zebrafish (Danio rerio), focusing on intestinal microenvironment. Adsorption kinetics experimental results showed that PS-MPs can adsorb a certain amount of CYP on its surface, thereby forming a new type of composite pollutant. After exposure to red fluorescent PS-MPs for 4 days, it was found that the PS-MPs could enter the zebrafish and accumulate in the intestines. Five-month-old female zebrafish were exposed to PS-MPs, CYP, and a mixture of both for 21 days. After exposure, feces were collected and analyzed using metagenomic sequencing to determine microbial composition and functional changes. Metagenomic sequencing of naturally excreted feces showed that co-exposure synergistically reduced α-diversity and shifted community structure, with marked losses of beneficial Fusobacteriota, Firmicutes and Cetobacterium somerae and enrichment of pathogenic Preplasmiviricota. Functional annotation indicated that PS-MPs alone up-regulated glycoside hydrolases and glycosyl-transferases, whereas CYP and the co-exposure group suppressed a great number of the top 50 carbohydrate-active enzymes and decreased secondary metabolic pathways linked to amino-acid, lipid and carbohydrate metabolism pathways. Antibiotic-resistance gene (ARGs) profiling identified 57 ARG types (such as sul1, adeF, lnuC and mphA) after co-exposure. Finally, key genes related to amino acid metabolism, carbohydrate metabolism, and lipid metabolism in intestinal tissue were significantly altered. Collectively, our data demonstrated that PS-MPs and CYP exposure amplified gut dysbiosis, metabolic dysfunction and ARG complexity in zebrafish. Overall, the study highlighted the potential risks of combined environmental pollutants on intestinal microbiota, with implications for ecosystem health.

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引用次数: 0

Effects of sunlight exposure on tire tread particle leachates: Chemical composition and toxicity in aquatic systems

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-19 DOI: 10.1016/j.envpol.2025.126286

Jenielle G. Domaoal , Margaret E. Stack , Kelly Hollman , Saleha Khanum , Christine Cho , Alysia Daines , Natalie Mladenov , Eunha Hoh , Karilyn E. Sant

Tire tread particles (TTP) are small micro- or nano-particles resulting from the friction of tire tread against roadways. These secondary microplastics have been found in waterways, arriving through airborne means or runoff. Due to their abundance and persistence in aquatic environments, TTP pose a potential hazard to wildlife. Natural degradation processes like photoirradiation can potentially worsen this by transforming leached TTP chemicals. In this study, we assessed the toxicity and chemical composition of TTP leachates produced over 1 or 6 days in either dark or photoirradiated conditions. For toxicity studies, zebrafish embryos were exposed to leachates over a range of concentrations and from 0 to 4 days post fertilization. TTP exposures impaired survival and hatching, induced embryonic defects, and modulated detoxification by the enzyme ethyoxyresorufin-O-deethylase. RNA sequencing revealed divergent effects based on photoirradiation, including impacts on glycolysis, lipid metabolism, and mitochondrial function. For chemical analysis, leachates were assessed using comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC/TOF-MS) and chromatographic features were annotated. In total, 546 chromatographic features were detected across all samples, and clustering showed unique chemical profiles based on photoirradiation during leaching. Several compounds were in high abundance in 1-day irradiated leachates, including 1,3-diphenylguanidine, aniline, and 1H-benzotriazole, though their relative abundance was reduced in 6-day leachates. Overall, this research compounds on the existing literature defining TTPs as toxic microplastics in the environment, and we show novel chemical and toxicological data that demonstrates how photoirradiation in the natural environment may exacerbate toxicity.

轮胎胎面微粒（TTP）是轮胎胎面与路面摩擦产生的微小或纳米颗粒。这些二次微塑料通过空气传播或径流进入水道。由于其在水生环境中的大量存在和持久性，TTP 对野生动物构成了潜在危害。自然降解过程（如光辐射）可能会使浸出的 TTP 化学物质发生转化，从而加剧这种危害。在这项研究中，我们评估了在黑暗或光照射条件下 1 天或 6 天产生的 TTP 浸出物的毒性和化学成分。在毒性研究中，斑马鱼胚胎在受精后 0-4 天内暴露于不同浓度的沥滤液中。暴露于 TTP 会影响存活率和孵化率，诱发胚胎缺陷，并调节乙氧苏木素-O-脱乙基酶的解毒作用。RNA 测序显示了光辐射的不同影响，包括对糖酵解、脂质代谢和线粒体功能的影响。在化学分析方面，采用二维气相色谱-飞行时间质谱联用技术（GC×GC/TOF-MS）对浸出液进行了全面评估，并对色谱特征进行了注释。在所有样本中总共检测到 546 个色谱特征，聚类显示了基于浸出过程中光照射的独特化学特征。在经过 1 天辐照的浸出液中，有几种化合物含量较高，包括 1,3-二苯基胍、苯胺和 1H-苯并三唑，但在经过 6 天辐照的浸出液中，这些化合物的相对含量有所降低。总之，这项研究是对现有文献中将 TTPs 定义为环境中有毒微塑料的补充，我们还展示了新的化学和毒理学数据，证明了自然环境中的光辐照可能会加剧毒性。

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引用次数: 0

Historical shifts in mercury deposition in northeastern China: From vegetation to human activity

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-19 DOI: 10.1016/j.envpol.2025.126290

Yong Luo , Xin Zhou , Shiwei Jiang , Min Ding , Hongfei Zhao , Yulu Xue , Xuanqiao Liu , Ming Ji

Mercury (Hg) pollution is a pervasive environmental issue that greatly threatens ecosystem and human health. However, the primary natural factors and human-induced phase shifts affecting Hg deposition in typical areas remain unclear. With its long history of industrialization, northeastern China is an important area for Hg pollution research. Here, we constructed an accurate chronological framework using varve counting combined with Hg concentration measurements to reconstruct the high-resolution Hg depositional history of Sihailongwan Maar Lake (SHML) in northeastern China over the past 1400 years. High (low) Hg flux in the SHML sediments was closely linked to an increase (decrease) in broadleaved tree coverage. During the Medieval Climate Anomaly, warming promoted the expansion of broadleaved trees, increasing Hg flux. Conversely, colder climates hindered broadleaved tree growth during the Little Ice Age, reducing Hg flux. However, Hg flux has significantly increased since the Current Warm Period (∼1850 CE) and was strongly correlated with regional population growth, causing a gradual increase in Hg deposition with increasing human activities and decreased natural input. Four-phase regime shifts in Hg flux influenced by anthropogenic activities were identified using the Sequential T-test Analysis of Regime-Shifts algorithm, highlighting the influence of government policies, economic development, and social changes on Hg deposition. This study elucidated the role of vegetation in northeastern China before large-scale human activities and the complex effects of human activities on Hg deposition.

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引用次数: 0

Enhancing sediment toxicity assessments: Integrating bioavailability metrics with sediment effect concentrations for improved predictive accuracy

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-19 DOI: 10.1016/j.envpol.2025.126285

Buyun Jeong , Jinsung An , Kyoungphile Nam

Sediments act as both sinks and sources for contaminants, particularly heavy metals like cadmium (Cd), posing risks to aquatic ecosystems. To evaluate sediment toxicity, sediment quality guidelines (SQGs) such as Sediment Effect Concentrations (SECs) have been widely applied. However, these methods often fail to resolve toxicity in the "Uncertain" range, where contaminant concentrations approach threshold values. This limitation arises from the reliance on bulk sediment concentrations, which do not account for bioavailability. This study integrates bioavailability-focused evaluation using Interstitial Water Toxic Units (IWTU) with traditional SEC frameworks to enhance sediment toxicity assessments. Using SECs alone, the toxicity thresholds were 0.09 mg/kg for long-term ecological safety (Consensus Level 1) and 0.36 mg/kg for benthic communities (Consensus Level 2). However, predictability, defined as the ability to correctly classify sediments correctly based on bioassay results, was limited to 43 % due to ambiguity in the "grey area" between these thresholds. To address this, aqueous phase Cd concentrations, derived from a partitioning coefficient model, were normalized to the USEPA Final Chronic Value (FCV) of 0.72 μg/L to calculate IWTU values. This tiered approach integrates SECs with bioavailability-focused assessments, improving predictability to 76 % by refining classifications in the "Uncertain" category. The proposed framework effectively combines the ecological breadth of SECs with the precision of IWTU, addressing the limitations of single-method approaches. These findings underscore the importance of bioavailability-focused metrics in enhancing the reliability of sediment toxicity assessments and management practices.

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引用次数: 0

Long-term exposure to environmentally relevant concentrations of tri-m-cresyl phosphate induces fecundity decline and gonadal dysplasia by disrupting reproductive endocrine homeostasis

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-19 DOI: 10.1016/j.envpol.2025.126280

Xun'e Yi , Haoyu Yang , Yongkang Zhang , Chunsheng Liu

Tricresyl phosphate (TCP) isomer mixtures are novel aryl-organophosphate esters that have been detected in aquatic environments, with concentrations ranging from not detected (ND) to 8100 ng/L. Among these isomers, Tri-m-cresyl phosphate (TmCP) has been identified as a predominant isomer. It has been demonstrated to exert toxic effects on fish. However, the reproductive toxicity of environmentally relevant concentrations of TmCP on zebrafish remain unclear. In the present study, one month-old zebrafish were exposed to 0, 0.2, 2, and 20 μg/L TmCP for 100 d. The results demonstrated that TmCP exposure disrupted fecundity of zebrafish, which was manifested by the decreases of cumulative number of eggs in females, sperm density and sperm motility in males, as well as yolk diameter and body length in F1 generation. Further research found that TmCP exposure reduced the proportion of late vitellogenic oocytes (LV) and spermatozoa (SZ) in ovaries and testes of zebrafish, respectively, and reduced the levels of sex steroid hormones in plasma, including 4-androstene-3,17-dione (AE), estrone (E1), and testosterone (T). In addition, expression of genes involved in hypothalamic-pituitary-gonadal (HPG) axis and molecular docking analysis were performed to explore toxic mechanisms of TmCP. The results showed that TmCP significantly inhibited the expressions of sex steroid hormones synthesis genes (hsd3b, cyp17, hsd17b, and hsd11b) in gonads and could bind to the active pocket sites of their upstream proteins. These results confirmed that TmCP could affect gonadal development and hormone homeostasis in zebrafish by interfering with steroid hormone synthesis pathway, thereby reducing fecundity of female and male zebrafish. The results of this study contribute to expanding the understanding of the reproductive toxicity of TmCP and provide new insights into its potential health risks.

{"title":"Long-term exposure to environmentally relevant concentrations of tri-m-cresyl phosphate induces fecundity decline and gonadal dysplasia by disrupting reproductive endocrine homeostasis","authors":"Xun'e Yi , Haoyu Yang , Yongkang Zhang , Chunsheng Liu","doi":"10.1016/j.envpol.2025.126280","DOIUrl":"10.1016/j.envpol.2025.126280","url":null,"abstract":"<div><div>Tricresyl phosphate (TCP) isomer mixtures are novel aryl-organophosphate esters that have been detected in aquatic environments, with concentrations ranging from not detected (ND) to 8100 ng/L. Among these isomers, Tri-m-cresyl phosphate (TmCP) has been identified as a predominant isomer. It has been demonstrated to exert toxic effects on fish. However, the reproductive toxicity of environmentally relevant concentrations of TmCP on zebrafish remain unclear. In the present study, one month-old zebrafish were exposed to 0, 0.2, 2, and 20 μg/L TmCP for 100 d. The results demonstrated that TmCP exposure disrupted fecundity of zebrafish, which was manifested by the decreases of cumulative number of eggs in females, sperm density and sperm motility in males, as well as yolk diameter and body length in F1 generation. Further research found that TmCP exposure reduced the proportion of late vitellogenic oocytes (LV) and spermatozoa (SZ) in ovaries and testes of zebrafish, respectively, and reduced the levels of sex steroid hormones in plasma, including 4-androstene-3,17-dione (AE), estrone (E1), and testosterone (T). In addition, expression of genes involved in hypothalamic-pituitary-gonadal (HPG) axis and molecular docking analysis were performed to explore toxic mechanisms of TmCP. The results showed that TmCP significantly inhibited the expressions of sex steroid hormones synthesis genes (<em>hsd3b</em>, <em>cyp17</em>, <em>hsd17b</em>, and <em>hsd11b</em>) in gonads and could bind to the active pocket sites of their upstream proteins. These results confirmed that TmCP could affect gonadal development and hormone homeostasis in zebrafish by interfering with steroid hormone synthesis pathway, thereby reducing fecundity of female and male zebrafish. The results of this study contribute to expanding the understanding of the reproductive toxicity of TmCP and provide new insights into its potential health risks.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"374 ","pages":"Article 126280"},"PeriodicalIF":7.6,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851807","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}

引用次数: 0

Anticoagulant rodenticide exposure in endangered American badgers (Taxidea taxus) and fishers (Pekania pennanti) from British Columbia, Canada, 1998 to 2018

IF 8.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-18 DOI: 10.1016/j.envpol.2025.126278

Sofi Hindmarch, John Elliott, Richard Weir, Sandi Lee, France Maisonneuve

Anticoagulant rodenticide (AR) concentrations in livers of 69 samples of two mustelid species, collected 1998 to 2018 from locations in British Columbia, Canada are presented. The American badger Taxidea taxus is endangered in Canada, and fisher Pekania pennanti populations are at-risk. Using a high performance liquid chromatography method, we measured liver concentrations of the following second generation ARs (SGARs): brodifacoum, bromadiolone, difethialone and the first generation (FGAR) compounds: warfarin, diphacinone and chlorophacinone in 59 badgers and 10 fishers. Of the 59 badgers analyzed, 69% (n=41) contained residues of one or more ARs. The mean total AR exposure was 201 ng/g (wet weight) (range: 4.0 -214 ng/g) with an average of three compounds detected (range 1-6) per individual. Male badgers had twice the concentration levels as females (182±300 ng/g versus 93±170 ng/g). The SGARs bromadiolone (n=33) and brodifacoum (n=21) were the most common ARs detected. Four badgers had AR levels > 1000 ng/g and eight had > 500 ng/g in their livers. The highest average concentrations were from badgers collected in the East Kootenay region (FGAR: 154 ± 210 ng/g, SGAR: 295 ± 504 ng/g). Six female badgers were lactating and all were exposed to rodenticides. We found no spatial relationship between development and exposure levels in badgers. In Fishers, one juvenile female was exposed to warfarin (50 ng/g) and bromadiolone (528 ng/g), and an adult female tested positive for brodifacoum (13 ng/g). Regardless of the lower incidences of exposure, finding such high levels of SGARs was surprising given that fishers are a shy forest carnivore species.

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引用次数: 0

Contradictions in dissolved black carbon research: A critical review of its sources, structures, analytical methods, and environmental behaviors

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-18 DOI: 10.1016/j.envpol.2025.126276

Lijun Fan , Tiancheng Han , Xianxing Huang , Yukai Zhang , Weiwei Zhai , Daoyong Zhang , Xiangliang Pan

Dissolved black carbon (DBC) represents the most active component within the black carbon (BC) continuum and plays a vital role in the global carbon cycle and the removal of inorganic and organic contaminants due to its prolonged residence time and unique condensed aromatic structure. Significant progress has been made in understanding DBC source, molecular structure, analytical methods, stability, and environmental behavior, particularly its photochemical and microbial transformation. However, substantial uncertainties persist, including ambiguities in its definition, limitations in isolation and quantification methods, and unidentified sources. These limitations have led to lots of inconsistencies regarding its stability, environmental transport pathways, and transformation mechanisms. This review critically examines the current landscape of DBC research, with a focus on: (1) key contradictions in DBC cycling processes, including debates over its recalcitrance, mismatched isotopic signatures, and imbalances in the marine DBC budget; (2) limitations for DBC isolation and quantification methods in natural environments; and (3) photochemical and microbial transformation processes, and its interactions with environmental pollutants. By synthesizing recent insights, this review aims to enhance the understanding of DBC's structures, turnover, and environmental behavior, as well as its implications for the global carbon cycle. To address existing challenges, future studies are suggested to prioritize resolving these contradictions, developing standardized analytical approaches, and achieving a clearer elucidation of DBC cycling processes across diverse environments.

{"title":"Contradictions in dissolved black carbon research: A critical review of its sources, structures, analytical methods, and environmental behaviors","authors":"Lijun Fan , Tiancheng Han , Xianxing Huang , Yukai Zhang , Weiwei Zhai , Daoyong Zhang , Xiangliang Pan","doi":"10.1016/j.envpol.2025.126276","DOIUrl":"10.1016/j.envpol.2025.126276","url":null,"abstract":"<div><div>Dissolved black carbon (DBC) represents the most active component within the black carbon (BC) continuum and plays a vital role in the global carbon cycle and the removal of inorganic and organic contaminants due to its prolonged residence time and unique condensed aromatic structure. Significant progress has been made in understanding DBC source, molecular structure, analytical methods, stability, and environmental behavior, particularly its photochemical and microbial transformation. However, substantial uncertainties persist, including ambiguities in its definition, limitations in isolation and quantification methods, and unidentified sources. These limitations have led to lots of inconsistencies regarding its stability, environmental transport pathways, and transformation mechanisms. This review critically examines the current landscape of DBC research, with a focus on: (1) key contradictions in DBC cycling processes, including debates over its recalcitrance, mismatched isotopic signatures, and imbalances in the marine DBC budget; (2) limitations for DBC isolation and quantification methods in natural environments; and (3) photochemical and microbial transformation processes, and its interactions with environmental pollutants. By synthesizing recent insights, this review aims to enhance the understanding of DBC's structures, turnover, and environmental behavior, as well as its implications for the global carbon cycle. To address existing challenges, future studies are suggested to prioritize resolving these contradictions, developing standardized analytical approaches, and achieving a clearer elucidation of DBC cycling processes across diverse environments.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"374 ","pages":"Article 126276"},"PeriodicalIF":7.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847033","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}

引用次数: 0

Adverse associations of pre-pregnancy exposure to PM2.5 and its components with fetal growth alleviated by residential greenness: a prospective cohort study

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-18 DOI: 10.1016/j.envpol.2025.126272

Si-Wei Dai , Zhen-Hua Li , Si-Yu Zhang , Chen Sun , Jia-Hui Li , Chun-Yong Wang , Xiao-Yu Zhao , Hai-Yang Weng , Kai Huang , Mao-Lin Chen , Guo-Peng Gao , Cheng-Yang Hu , Xiu-Jun Zhang

Maternal exposure to fine particulate matter (PM_2.5) and residential greenness both influence fetal growth. No previous studies have examined their sex-specific and interaction effects. We aim to evaluate the sex-specific effects in these associations and exposure interactions. This study involved 1,275 mother–child pairs enrolled in the Ma'anshan birth cohort in China. Pre-pregnancy exposure to PM_2.5 and its components was assessed using a spatiotemporal model based on maternal addresses, while residential greenness was estimated through the normalized difference vegetation index (NDVI) based on satellite data. Fetal parameters—including biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), femur length (FL), and estimated fetal weight (EFW)—were measured during pregnancy via ultrasound. To examine associations between these exposures and both continuous and categorical outcomes, generalized estimating equations (GEE) and generalized linear regression were applied. Subgroup analyses were conducted to evaluate sex-specific effects. Pre-pregnancy exposure to PM_2.5, OM, BC, SO₄²⁻, NH₄⁺, and NO₃⁻ was correlated with decreased Z-scores of fetal parameters (BPD, FL, EFW, AC) during the second trimester, particularly in male fetuses. In the third trimester, we found that the Z-scores of AC (0.081, 95% CI: 0.001, 0.160) and EFW (0.097, 95% CI: 0.008, 0.185) increased with each interquartile range (IQR) increase in residential greenness. We observed the effect modification of PM_2.5 and its components on the relationship between residential greenness and fetal growth in utero. Residential greenness can mitigate the adverse effects of PM_2.5 and its components prior to pregnancy on fetal growth. Our findings suggest that increased residential greenness during pregnancy preparation may help alleviate air pollution's detrimental effects on fetal growth.

{"title":"Adverse associations of pre-pregnancy exposure to PM2.5 and its components with fetal growth alleviated by residential greenness: a prospective cohort study","authors":"Si-Wei Dai , Zhen-Hua Li , Si-Yu Zhang , Chen Sun , Jia-Hui Li , Chun-Yong Wang , Xiao-Yu Zhao , Hai-Yang Weng , Kai Huang , Mao-Lin Chen , Guo-Peng Gao , Cheng-Yang Hu , Xiu-Jun Zhang","doi":"10.1016/j.envpol.2025.126272","DOIUrl":"10.1016/j.envpol.2025.126272","url":null,"abstract":"<div><div>Maternal exposure to fine particulate matter (PM<sub>2.5</sub>) and residential greenness both influence fetal growth. No previous studies have examined their sex-specific and interaction effects. We aim to evaluate the sex-specific effects in these associations and exposure interactions. This study involved 1,275 mother–child pairs enrolled in the Ma'anshan birth cohort in China. Pre-pregnancy exposure to PM<sub>2.5</sub> and its components was assessed using a spatiotemporal model based on maternal addresses, while residential greenness was estimated through the normalized difference vegetation index (NDVI) based on satellite data. Fetal parameters—including biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), femur length (FL), and estimated fetal weight (EFW)—were measured during pregnancy via ultrasound. To examine associations between these exposures and both continuous and categorical outcomes, generalized estimating equations (GEE) and generalized linear regression were applied. Subgroup analyses were conducted to evaluate sex-specific effects. Pre-pregnancy exposure to PM<sub>2.5</sub>, OM, BC, SO<sub>4</sub><sup>2−</sup>, NH<sub>4</sub><sup>+</sup>, and NO<sub>3</sub><sup>−</sup> was correlated with decreased Z-scores of fetal parameters (BPD, FL, EFW, AC) during the second trimester, particularly in male fetuses. In the third trimester, we found that the Z-scores of AC (0.081, 95% CI: 0.001, 0.160) and EFW (0.097, 95% CI: 0.008, 0.185) increased with each interquartile range (IQR) increase in residential greenness. We observed the effect modification of PM<sub>2.5</sub> and its components on the relationship between residential greenness and fetal growth in utero. Residential greenness can mitigate the adverse effects of PM<sub>2.5</sub> and its components prior to pregnancy on fetal growth. Our findings suggest that increased residential greenness during pregnancy preparation may help alleviate air pollution's detrimental effects on fetal growth.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"374 ","pages":"Article 126272"},"PeriodicalIF":7.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846783","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}

引用次数: 0

Exposure to toxic metal(loid)s via breastmilk and stunting in infants living in the Lake Atitlán watershed, Guatemala

IF 8.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-18 DOI: 10.1016/j.envpol.2025.126273

Sandra Rodríguez Quintana, Frank A. von Hippel, Mónica Orozco, Noel Solomons, Dean Billheimer, Maria A. Sans-Fuentes, Mary Kay Amistadi, Sam Sneed, Paloma Beamer, Alejandra Zamora, Eileen Rivera, Ruth Forsten, Preet Gandhi

Guatemala has the highest child stunting prevalence in the Americas and is ranked sixth internationally. This paper examines concentrations of toxic metals and metalloids in the breastmilk of Mayan women in the Lake Atitlán watershed and explores potential relationships with stunting prevalence and demographic parameters to guide future research. We completed a cross-sectional study in 2022 (n=80 mother/infant dyads) with 20 mother/infant dyads from each of four communities: San Juan La Laguna, San Pedro La Laguna, Panajachel, and Santiago Atitlán. We collected a breastmilk sample from each mother and measured the length of each infant (90-180 days old) to assess stunting (<-2 SD length-for-age below WHO growth standards median), and we collected community drinking water samples. The mean Z-score for stunting was -1.39 (SD = 1.24). Infants from Panajachel had a higher prevalence of stunting (x= -2.06) than did infants from the other three communities. Metals and metalloids were quantified in breastmilk and water samples using inductively coupled plasma - mass spectrometry (ICP-MS). The concentrations of arsenic and lead in breastmilk were above the WHO safety standards in Panajachel and Santiago Atitlán, and concentrations of toxic metal(loid)s overall were highest in Panajachel. For infants from Panajachel and Santiago Atitlán, reduced Z-scores for stunting were associated with higher breastmilk concentrations of arsenic, barium, beryllium, and lead (p=0.02-0.04). Water samples from these two communities exhibited greater concentrations of arsenic and barium than did water from other communities (p=0.003–0.03). Significant associations between concentrations of arsenic, barium, beryllium, and lead with stunting score warrant a comprehensive assessment of the potential role of toxic metal(loid)s in child development. Stunting is a complex multifactorial problem; our results indicate that investigations of stunting should also evaluate exposures to toxic metal(loid)s in addition to the traditional causal factors such as malnutrition and chronic infections.

{"title":"Exposure to toxic metal(loid)s via breastmilk and stunting in infants living in the Lake Atitlán watershed, Guatemala","authors":"Sandra Rodríguez Quintana, Frank A. von Hippel, Mónica Orozco, Noel Solomons, Dean Billheimer, Maria A. Sans-Fuentes, Mary Kay Amistadi, Sam Sneed, Paloma Beamer, Alejandra Zamora, Eileen Rivera, Ruth Forsten, Preet Gandhi","doi":"10.1016/j.envpol.2025.126273","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126273","url":null,"abstract":"Guatemala has the highest child stunting prevalence in the Americas and is ranked sixth internationally. This paper examines concentrations of toxic metals and metalloids in the breastmilk of Mayan women in the Lake Atitlán watershed and explores potential relationships with stunting prevalence and demographic parameters to guide future research. We completed a cross-sectional study in 2022 (n=80 mother/infant dyads) with 20 mother/infant dyads from each of four communities: San Juan La Laguna, San Pedro La Laguna, Panajachel, and Santiago Atitlán. We collected a breastmilk sample from each mother and measured the length of each infant (90-180 days old) to assess stunting (<-2 SD length-for-age below WHO growth standards median), and we collected community drinking water samples. The mean Z-score for stunting was -1.39 (SD = 1.24). Infants from Panajachel had a higher prevalence of stunting (x= -2.06) than did infants from the other three communities. Metals and metalloids were quantified in breastmilk and water samples using inductively coupled plasma - mass spectrometry (ICP-MS). The concentrations of arsenic and lead in breastmilk were above the WHO safety standards in Panajachel and Santiago Atitlán, and concentrations of toxic metal(loid)s overall were highest in Panajachel. For infants from Panajachel and Santiago Atitlán, reduced Z-scores for stunting were associated with higher breastmilk concentrations of arsenic, barium, beryllium, and lead (p=0.02-0.04). Water samples from these two communities exhibited greater concentrations of arsenic and barium than did water from other communities (p=0.003–0.03). Significant associations between concentrations of arsenic, barium, beryllium, and lead with stunting score warrant a comprehensive assessment of the potential role of toxic metal(loid)s in child development. Stunting is a complex multifactorial problem; our results indicate that investigations of stunting should also evaluate exposures to toxic metal(loid)s in addition to the traditional causal factors such as malnutrition and chronic infections.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"128 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847031","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}

引用次数: 0

Association of ambient ozone with time to pregnancy and the modifying effect of ambient temperature: a population-based cohort study

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-04-18 DOI: 10.1016/j.envpol.2025.126269

Bingxue Wu , Tao Wang , Yan Zhang , Yuyan Li , Cai Kong , Yishi Jiang , Xiangjing Song , Xing Chen , Zhengyuan Xie , Hanfeng Ye , Lin Feng , Zigao Zhao , Yan Che

Research on the impact of ozone (O₃) on fecundability has been inconclusive, lacking evidence examining the lagged pattern of ozone exposure and temperature modification. Current studies have predominantly been conducted in North America and Europe, leaving a gap in research from the Asian population. This population-based prospective cohort study involved 594,110 couples in Yunnan Province, China, enrolled in the National Free Preconception Health Examination Project. We calculated time-varying cycle-specific O₃ concentration across 1–12 menstrual cycles before conception, according to each female's menstrual cycle length and residential addresses. Time to pregnancy was used as an outcome indicator. A discrete-time Cox regression model integrated with a distributed lag model (DLM) was employed for analysis. We observed that O₃ exposure was negatively associated with fecundability, with the effect diminishing over time relative to conception. The first menstrual cycle before conception appeared most sensitive to O₃ exposure, showing a 6.2 % decrease (HR: 0.938; 95 % CI: 0.936 to 0.941) in fecundability per one IQR increase of O₃. Combined exposure to O₃ and ambient temperature may exert a synergistic effect. The modifying effect of temperature was most pronounced in the first cycle before conception, with HRs of 0.891 (95 % CI: 0.886 to 0.895), 0.859 (95 % CI: 0.853 to 0.865), and 0.833 (95 % CI: 0.826 to 0.840) under low-, median-, and high-temperature conditions, respectively. Targeted policy interventions are needed to mitigate the dual impact of air pollution and rising temperatures.

{"title":"Association of ambient ozone with time to pregnancy and the modifying effect of ambient temperature: a population-based cohort study","authors":"Bingxue Wu , Tao Wang , Yan Zhang , Yuyan Li , Cai Kong , Yishi Jiang , Xiangjing Song , Xing Chen , Zhengyuan Xie , Hanfeng Ye , Lin Feng , Zigao Zhao , Yan Che","doi":"10.1016/j.envpol.2025.126269","DOIUrl":"10.1016/j.envpol.2025.126269","url":null,"abstract":"<div><div>Research on the impact of ozone (O<sub>3</sub>) on fecundability has been inconclusive, lacking evidence examining the lagged pattern of ozone exposure and temperature modification. Current studies have predominantly been conducted in North America and Europe, leaving a gap in research from the Asian population. This population-based prospective cohort study involved 594,110 couples in Yunnan Province, China, enrolled in the National Free Preconception Health Examination Project. We calculated time-varying cycle-specific O<sub>3</sub> concentration across 1–12 menstrual cycles before conception, according to each female's menstrual cycle length and residential addresses. Time to pregnancy was used as an outcome indicator. A discrete-time Cox regression model integrated with a distributed lag model (DLM) was employed for analysis. We observed that O<sub>3</sub> exposure was negatively associated with fecundability, with the effect diminishing over time relative to conception. The first menstrual cycle before conception appeared most sensitive to O<sub>3</sub> exposure, showing a 6.2 % decrease (HR: 0.938; 95 % CI: 0.936 to 0.941) in fecundability per one IQR increase of O<sub>3</sub>. Combined exposure to O<sub>3</sub> and ambient temperature may exert a synergistic effect. The modifying effect of temperature was most pronounced in the first cycle before conception, with HRs of 0.891 (95 % CI: 0.886 to 0.895), 0.859 (95 % CI: 0.853 to 0.865), and 0.833 (95 % CI: 0.826 to 0.840) under low-, median-, and high-temperature conditions, respectively. Targeted policy interventions are needed to mitigate the dual impact of air pollution and rising temperatures.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"374 ","pages":"Article 126269"},"PeriodicalIF":7.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847034","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}

引用次数: 0