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Anti-anemic potential of cerium oxide nanoparticles in diet-induced obese rats: Role of hepcidin, oxidative stress, and inflammation 氧化铈纳米颗粒在饮食诱导的肥胖大鼠中的抗贫血潜力:hepcidin,氧化应激和炎症的作用
Pub Date : 2025-08-24 DOI: 10.1016/j.jtemin.2025.100260
Samir A.E. Bashandy , Marawan A. Elbaset , Fatma A.A. Ibrahim , Sherif A. Abdelmottaleb Moussa , Noha A. Abd El-Latif , Sherif M. Afifi , Tuba Esatbeyoglu , Ahmed M.A. El-Seidy

Background

Obesity and overweight result in low-grade systemic inflammation associated with an increase of oxidative stress and hepcidin discharging and lowering iron absorption giving rise to anemia. This study is aimed to investigate the anti-anemic effect of cerium oxide nanoparticles (CeO2NPs) in obese rats via investigation of hepcidin expression, ferritin, inflammatory markers, and oxidative stress parameters

Methods

CeO2NPs were synthesized using sol–gel method. Eight male rats were specified as control non-obese. Twenty-four Wistar adult male rats were subjected to high fat diet /sucrose and they were divided into 3 groups; obese, 15 or 30 mg.kg−1 CeO2NPs IP treatment for the subsequent 8 weeks. Blood cell counts, hepicidin gene expression in adipose tissue, inflammatory and oxidative stress parameters beside iron parameters were evaluated in the experimental groups.

Results

CeO2NPs crystallite size is 48.88 nm. The ratio of Ce4+ was 69.33 %. The intraperitoneal injection of obese rats with CeO2NPs substantially reduced the elevetion in WBCs, platelets count, plasma cholesterol, triglycerides, malondialdehyde (MDA), superoxide dismutase (SOD), TNF-α (Tumor necrosis factor alpha), IL-6 (Interleukin-6), and CRP (C-reactive protein) levels. Also, CeO2NPs combate the increase of hepcidin gene expression, ferritin level, iron content in adipose tissue, body weight, body mass index (BMI) and plasma leptin concentration of obese rats. Moreover, RBCs and WBCs count, Hb level, adiponectin level, and reduced glutathione (GSH) were enhanced in obese rats given CeO2NPs.

Conclusion

CeO2NPs may have anti-anemic activity in obese rats via management of hepcidin gene expression along with antioxidant and anti-inflammatory properties.
背景:肥胖和超重导致低度全身性炎症,与氧化应激和hepcidin释放和降低铁吸收的增加有关,从而导致贫血。本研究旨在通过研究氧化铈纳米颗粒(CeO2NPs)对肥胖大鼠hepcidin表达、铁蛋白、炎症标志物和氧化应激参数的影响,探讨其抗贫血作用。8只雄性大鼠被指定为对照非肥胖。取24只Wistar成年雄性大鼠饲喂高脂/蔗糖饲料,随机分为3组;15或30 mg.kg - 1 CeO2NPs IP治疗,随后8周。测定各组小鼠血细胞计数、脂肪组织hepicidin基因表达、炎症和氧化应激参数及铁参数。结果sceo2nps晶粒尺寸为48.88 nm。Ce4+的含量为69.33%。腹腔注射CeO2NPs可显著降低肥胖大鼠白细胞、血小板计数、血浆胆固醇、甘油三酯、丙二醛(MDA)、超氧化物歧化酶(SOD)、TNF-α(肿瘤坏死因子α)、IL-6(白细胞介素-6)和CRP (c反应蛋白)水平的升高。此外,CeO2NPs还能抑制肥胖大鼠hepcidin基因表达、铁蛋白水平、脂肪组织铁含量、体重、体重指数(BMI)和血浆瘦素浓度的升高。此外,给予CeO2NPs的肥胖大鼠红细胞和白细胞计数、Hb水平、脂联素水平和还原谷胱甘肽(GSH)水平均升高。结论ceo2nps可能通过调控hepcidin基因表达及抗氧化和抗炎作用,在肥胖大鼠中具有抗贫血活性。
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引用次数: 0
Global lead contamination in soils, sediments, and aqueous environments: Exposure, toxicity, and remediation 全球土壤、沉积物和水环境中的铅污染:暴露、毒性和修复
Pub Date : 2025-08-08 DOI: 10.1016/j.jtemin.2025.100259
Pratibha Mishra , Shakir Ali , Rakesh Kumar , Shashank Shekhar

Background

Lead (Pb) is a heavy meta(loid) and historically been used in paints, jewelleries, electronics, soldering, plumbing, and cookware due to its high malleability, low melting point, resistance to corrosion, and ability to bond with other metals. However, Pb is recognized as one of the toxic elements commonly occurring in soils, sediments, and natural water.

Objectives and methods

This article provides a comprehensive review of the current status of Pb contamination, underscoring its distribution, persistence, fate, and impacts on humans and plants. We investigated recent literature focusing on: (a) sources of Pb contamination in soils, sediments, and aqueous environments, (b) lead mobilization, occurrences, toxicity mechanisms, and their potential health effects; and (c) various remediation methods for Pb contamination in soil and water. Additionally, case studies from the USA, China, and India on Pb sources and pollution in different ecosystems are discussed.

Results

Our findings indicate that: 1) Lead concentrations exceed permissible limits in numerous soils, sediments, and water globally, while remediation efforts remain largely localized and limited in scale. 2) The mobility of Pb facilitates its bioaccumulation, enabling it to substitute for Ca²⁺ as a signalling messenger in plants and animals. This results in adverse effects such as impaired germination and nutrient uptake in plants, as well as neurotoxicity and other cascading negative impacts in humans and animals.

Conclusion

The study reveals that soils, sediments, and aqueous environments are moderately to highly polluted with Pb, necessitating further investigation into its mobilization and toxicity. Therefore, this contaminant should be comprehensively studied and mitigated through appropriate policy interventions.
铅(Pb)是一种重金属(loid),由于其高延展性,低熔点,耐腐蚀性和与其他金属结合的能力,历史上被用于油漆,珠宝,电子,焊接,管道和炊具。然而,铅被认为是土壤、沉积物和天然水中常见的有毒元素之一。目的与方法本文综述了铅污染的现状,重点介绍了铅污染的分布、持久性、命运及其对人类和植物的影响。我们调查了最近的文献,重点是:(a)土壤、沉积物和水环境中铅污染的来源;(b)铅的迁移、发生、毒性机制及其潜在的健康影响;(c)土壤和水中铅污染的各种修复方法。此外,还讨论了美国、中国和印度在不同生态系统中铅来源和污染的案例研究。结果:1)全球许多土壤、沉积物和水中的铅浓度都超过了允许的限度,而修复工作在很大程度上仍然是局部的,规模有限。2) Pb的迁移性促进了它的生物积累,使其能够替代Ca 2 +在植物和动物中作为信号信使。这会导致不良影响,如植物发芽和营养吸收受损,以及对人类和动物的神经毒性和其他级联负面影响。结论土壤、沉积物和水环境中存在中度至重度铅污染,需要进一步研究其迁移和毒性。因此,应全面研究这种污染物,并通过适当的政策干预加以缓解。
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引用次数: 0
Interactive effect of copper and nickel on juveniles of tambaqui (Colossoma macropomum) exposed to pH 4 and pH 7 铜和镍对暴露于pH 4和pH 7环境下的大鲵幼鱼的交互作用
Pub Date : 2025-08-05 DOI: 10.1016/j.jtemin.2025.100257
Priscylla M. Pavione, Adalberto L. Val
Copper (Cu) and nickel (Ni) are common in natural waters and can be toxic to fish, including those in the Amazon. The objective of this study is to assess the impact of copper (Cu) and nickel (Ni) on the biochemical and physiological characteristics of juvenile Colossoma macropomum. The study exposed 64 animals to varying concentrations of Cu and Ni, as well as a mixture of both metals, at pH levels of 4 and 7 for 96 h. The results demonstrated that pH levels significantly impacted several biological markers, including hemoglobin, catalase, lipoperoxidation (LPO), superoxide dismutase (SOD), and acetylcholinesterase (AChE). In particular, pH 7 was found to increase LPO and catalase levels while decreasing SOD and AChE levels. Notably, the study identified an inverse relationship between LPO levels and AChE activities. Exposure to Cu and Cu+Ni mix resulted in the inhibition of H+-ATPase activity at pH 4. At pH 4, Cu and Cu+Ni mix also inhibited Na+/K+-ATPase activity, while at pH 7, Ni and Cu+Ni mix inhibited it. The antagonistic effect of Ni and Cu on Na+/K+-ATPase was confirmed in animals exposed to a Cu+Ni mix. In all experimental conditions, superoxide dismutase (SOD) activities exhibited an increase at pH 4, which was followed by a decrease in lipid peroxidation (LPO). The effects of metals on SOD, LPO, and ACHE were found to be offset by changes in water pH.
铜(Cu)和镍(Ni)在自然水域中很常见,可能对鱼类有毒,包括亚马逊河流域的鱼类。本研究旨在探讨铜(Cu)和镍(Ni)对巨像幼鱼生理生化特性的影响。该研究将64只动物暴露在不同浓度的Cu和Ni以及两种金属的混合物中,pH值为4和7,持续96小时。结果表明,pH值显著影响了几种生物标志物,包括血红蛋白、过氧化氢酶、脂质过氧化物(LPO)、超氧化物歧化酶(SOD)和乙酰胆碱酯酶(AChE)。pH 7增加了LPO和过氧化氢酶水平,降低了SOD和AChE水平。值得注意的是,该研究确定了LPO水平与AChE活性之间的反比关系。暴露于Cu和Cu+Ni混合物中导致pH为4时H+- atp酶活性受到抑制。在pH为4时,Cu和Cu+Ni混合对Na+/K+- atp酶活性也有抑制作用,而在pH为7时,Ni和Cu+Ni混合对Na+/K+- atp酶活性有抑制作用。在暴露于Cu+Ni混合物的动物中证实了Ni和Cu对Na+/K+- atp酶的拮抗作用。在所有实验条件下,pH为4时,超氧化物歧化酶(SOD)活性升高,随后脂质过氧化(LPO)降低。发现金属对SOD、LPO和ACHE的影响被水pH的变化所抵消。
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引用次数: 0
Assessment of pond water quality and human health risk in the shoreline, intermediate and inland coastal areas of Bangladesh 评估孟加拉国海岸线、中部和内陆沿海地区的池塘水质和人类健康风险
Pub Date : 2025-07-12 DOI: 10.1016/j.jtemin.2025.100256
Md. Shohel Khan , Shitangsu Kumar Paul

Introduction

Surface water quality of the southwestern coastal zones of Bangladesh has been deteriorating through different human, industrial and agricultural activities. The emission of the effluents containing trace metals from these activities can contaminate the surface water. Human health may be adversely affected through the intake of trace metals present in drinking water.

Objectives

The study assessed pond water quality and human health risk in three villages named shoreline (Rajoir), intermediate (Gangarampur) and inland (Ganapatipur) of southwest coastal Bangladesh. A total of 36 water samples were collected from randomly selected 12 stations covering almost the entire study area. A total of 18 parameters were tested to determine the quality through water quality index (WQI), metal evaluation index (MEI), metal pollution index (MPI), and hazard index (HI). In addition, a total of 338 household heads (HHs) were interviewed through a self-developed semi-structured questionnaire along with three focus group discussions (FGDs) to achieve the objectives.

Results

The mean WQI increased from 105.95–150.69 from the shoreline to the inland area and was graded as ‘unsuitable’. The mean MEI was higher in the intermediate than that of shoreline and inland areas. The mean HIchild was also higher than HIinfant and HIadult in the three study areas, indicating that children were at higher risk rather than other. The MEI results indicated that about 50 % of water samples were graded as ‘moderately affected’ for all the study area. According to MPI, about 75 % (inland) and 50 % (shoreline) water samples were graded as ‘moderately affected’. HI recommended that all the sampling stations were graded as ‘unsafe’ except 25 % of samples from both shoreline and intermediate areas for infants. The majority of the respondents reported suffering from various diseases.

Conclusion

Pond water is recommended for use in drinking or household purposes only after proper filtration. Furthermore, the research findings are important for environmental and human health. Further research would be beneficial to explore the link among water pollution, human health, and livelihoods, and to understand the extent of pollution. This study also serves as a baseline for the coastal area of Bangladesh.
由于不同的人类、工业和农业活动,孟加拉国西南沿海地区的地表水质量一直在恶化。这些活动排放的含有微量金属的废水会污染地表水。人体健康可能因摄入饮用水中的微量金属而受到不利影响。目的对孟加拉国西南沿海3个村庄的池塘水质和人类健康风险进行评估,这些村庄分别为海岸线村(Rajoir)、中间村(Gangarampur)和内陆村(Ganapatipur)。从随机选择的12个站点采集了36个水样,几乎覆盖了整个研究区域。通过水质指数(WQI)、金属评价指数(MEI)、金属污染指数(MPI)和危害指数(HI)共测试18个参数来确定水质。此外,通过自行编制的半结构化问卷和三次焦点小组讨论,对338名户主进行了访谈,以实现目标。结果滨海至内陆地区的平均WQI为105.95 ~ 150.69,为“不适宜”。中部地区的平均MEI指数高于沿海和内陆地区。在三个研究区域中,平均HIchild也高于HIinfant和HIadult,表明儿童的风险高于其他儿童。MEI结果表明,在所有研究区域,约50%的水样被评为“中度受影响”。根据MPI,大约75%(内陆)和50%(海岸线)的水样被评为“中度受影响”。国际卫生组织建议,除了海岸线和中间地区25%的婴儿样本外,所有采样站都被评为“不安全”。大多数答复者报告患有各种疾病。结论池水应经适当过滤后,方可饮用或家庭使用。此外,研究结果对环境和人类健康具有重要意义。进一步的研究将有助于探索水污染与人类健康和生计之间的联系,并了解污染的程度。这项研究也可以作为孟加拉国沿海地区的基线。
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引用次数: 0
Genotoxic effects of green-synthesized silver nanoparticles on human lymphocytes 绿色合成纳米银对人淋巴细胞的遗传毒性作用
Pub Date : 2025-07-02 DOI: 10.1016/j.jtemin.2025.100255
Juana Sánchez-Alarcón , Mirta Milić , Stefano Bonassi , María Isabel Álvarez Núñez , Guillermo Alejandro Higareda Campos , Eder José Ordoñez-Frías , Rafael Valencia-Quintana
Background/Introduction: Silver nanoparticles (AgNPs) are widely used across various fields, particularly in biomedicine, owing to their unique physicochemical properties. Nevertheless, concerns persist regarding their potential adverse biological effects, especially genotoxicity. Although the toxicity of AgNPs has been previously investigated, studies on their genotoxic potential remain limited and yield conflicting results. Methods: This study employed the alkaline comet assay to evaluate the genotoxic potential of green-synthesized AgNPs in cultured human lymphocytes. The green-synthesized AgNPs were produced through a green reduction method using silver nitrate (AgNO₃, Reasol®, 99.98% purity) and green tea infusions (Lagg’s®), with synthesis monitored by colorimetry. Nanoparticle characterization was performed using UV-Vis spectrophotometry and Scanning Electron Microscopy (SEM), confirming their formation, stability, spherical morphology, and size range of 20 to 100 nm. Peripheral blood lymphocytes from three healthy donors were exposed to three different concentrations of green-synthesized AgNPs for 30 minutes. Results: The green-synthesized AgNPs induced DNA damage in a concentration-dependent manner, with a statistically significant increase in genotoxic effects. These findings suggest that green-synthesized AgNPs may cause oxidative stress and compromise genetic integrity. Conclusions: While green synthesis offers environmental advantages, the observed genotoxic effects raise important concerns regarding the biological safety of green-synthesized AgNPs. Further research is needed to elucidate their long-term health and environmental implications. Ongoing monitoring of products containing these nanoparticles is recommended to mitigate potential genotoxic risks.
背景/简介:银纳米颗粒(AgNPs)由于其独特的物理化学性质被广泛应用于各个领域,特别是生物医学领域。然而,对其潜在的不利生物效应,特别是遗传毒性的关注仍然存在。虽然AgNPs的毒性先前已被研究过,但对其遗传毒性潜力的研究仍然有限,并且产生了相互矛盾的结果。方法:采用碱性彗星法测定绿色合成AgNPs对培养的人淋巴细胞的遗传毒性。绿色合成的AgNPs是用硝酸银(AgNO₃,Reasol®,纯度为99.98%)和绿茶冲剂(Lagg’s®)通过绿色还原法生产的,合成过程采用比色法监测。利用紫外可见分光光度法和扫描电镜(SEM)对纳米颗粒进行了表征,证实了它们的形成、稳定性、球形形貌和尺寸范围为20至100 nm。将三名健康供体的外周血淋巴细胞暴露于三种不同浓度的绿色合成AgNPs中30分钟。结果:绿色合成的AgNPs诱导DNA损伤呈浓度依赖性,基因毒性效应显著增加。这些发现表明,绿色合成的AgNPs可能引起氧化应激并损害遗传完整性。结论:虽然绿色合成具有环境优势,但观察到的遗传毒性效应引起了人们对绿色合成AgNPs生物安全性的重要关注。需要进一步的研究来阐明它们对健康和环境的长期影响。建议对含有这些纳米颗粒的产品进行持续监测,以减轻潜在的遗传毒性风险。
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引用次数: 0
Solanum lycopersicum exerts cardioprotective effects via reduced creatinine kinase myocardial band and ATPase activities in Wistar rats exposed to lead acetate 茄汁通过降低醋酸铅暴露Wistar大鼠肌酸酐激酶心肌带和atp酶活性发挥心脏保护作用
Pub Date : 2025-06-10 DOI: 10.1016/j.jtemin.2025.100253
Olorunsola Israel Adeyomoye , Olugbemi Tope Olaniyan , Juliana Bunmi Adetunji , Oluwaseun Charles Adetunji

Background

Lead exposure is a known risk factor for cardiovascular diseases, yet effective cardioprotective interventions remain inadequately explored. Despite existing research, there is limited clarity on potential natural therapies that can mitigate lead-induced cardiac damage.

Objective

This study investigates the cardioprotective effects of ethyl acetate extract of Solanum lycopersicum (EESL) in lead-exposed Wistar rats, providing insights into its therapeutic potential and relevance.

Methods

Fresh fruits of Solanum lycopersicum (tomatoes) were air-dried, ground, concentrated, and extracted using ethyl acetate. A portion of EESL was analyzed using GC–MS. Fifteen (15) male Wistar rats were randomly assigned to three groups (n = 5 per group): control (distilled water), lead acetate (0.5 mg.mL-1), and lead acetate + EESL (5 mg.kg-1). Lead acetate and EESL were administered via drinking water and oral gavage, respectively, for four weeks. Body weight and lead concentration were measured using a weighing scale and flame atomic absorption spectrometry, respectively. Antioxidants and cardiac biomarkers were assessed using spectrophotometry. Data were analyzed using ANOVA at a significance level of p < 0.05.

Results

Gas chromatography mass spectrometry identified 56 constituents, with 6-dehydroprogesterone (-9.3 kcal/mol) showing the highest docking affinity for the beta-adrenergic receptor. There was a significant increase in body weight in the lead acetate + EESL group compared to the lead acetate group. Lead concentration was significantly higher in the lead acetate group compared to the lead acetate + EESL group. SOD activity significantly increased in the lead acetate + EESL group, while CK-MB, Na⁺/K⁺ ATPase, and Ca²⁺ ATPase activities significantly decreased compared to the lead acetate group.

Conclusion

Solanum lycopersicum ethyl acetate extract demonstrated cardioprotective effects by enhancing antioxidant activity and reducing cardiac injury markers in lead-exposed rats. However, the associated increase in body weight raises concerns about potential metabolic risks, warranting further investigation
铅暴露是已知的心血管疾病的危险因素,但有效的心脏保护干预措施仍未充分探索。尽管已有研究,但关于减轻铅引起的心脏损伤的潜在自然疗法的清晰度有限。目的研究茄茄乙酸乙酯提取物对铅暴露Wistar大鼠的心脏保护作用,探讨其治疗潜力和相关性。方法对新鲜番茄果实进行风干、研磨、浓缩、乙酸乙酯萃取。部分EESL用GC-MS分析。15只雄性Wistar大鼠随机分为3组(每组5只):对照组(蒸馏水)、醋酸铅(0.5 mg.mL-1)和醋酸铅+ EESL (5 mg.kg-1)。醋酸铅和EESL分别通过饮水和灌胃给予4周。分别用称重秤和火焰原子吸收光谱法测定体重和铅浓度。采用分光光度法测定抗氧化剂和心脏生物标志物。数据分析采用方差分析,显著性水平为p <;0.05.结果鉴定出56种成分,其中6-脱氢孕酮(-9.3 kcal/mol)对β -肾上腺素能受体的对接亲和力最高。与醋酸铅组相比,醋酸铅+ EESL组的体重显著增加。与醋酸铅+ EESL组相比,醋酸铅组的铅浓度显著升高。与醋酸铅组相比,乙酸铅+ EESL组SOD活性显著升高,CK-MB、Na + /K + ATPase、ca2 + ATPase活性显著降低。结论茄叶乙酸乙酯提取物可提高铅暴露大鼠的抗氧化活性,降低心脏损伤标志物,具有保护心脏的作用。然而,相关的体重增加引起了对潜在代谢风险的担忧,需要进一步研究
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引用次数: 0
Nanotoxicity unveiled: Evaluating exposure risks and assessing the impact of nanoparticles on human health 纳米毒性揭秘:评估接触风险和评估纳米颗粒对人类健康的影响
Pub Date : 2025-05-29 DOI: 10.1016/j.jtemin.2025.100252
Rohit Kumar , Akhilesh Kumar , Sweety Bhardwaj , Mohini Sikarwar , Sonam Sriwastaw , Gaurav Sharma , Madhu Gupta

Background

Nanomaterials have been widely used across medical and health sciences due to their unique physicochemical characteristics, versatile functionalisation, and remarkable tissue penetration abilities. As nanotechnology continues to evolve, concerns regarding the potential toxicological effects of these materials are growing. Despite their promising biomedical applications, comprehensive safety data remains limited.

Purpose

This review details the physicochemical properties of the nanoparticles contributing to the development of potentially adverse effects on human health and the environment. It explores the cellular and molecular mechanisms through which nanoparticles induce toxicity. It assesses current nanotoxicity evaluation strategies, including In vitro, in vivo, and in silico models, along with supporting methodologies. The review also addresses the regulatory landscape of nanotoxicology, outlining the challenges in developing standardised protocols to ensure the safe and effective use of nanomaterials in the health sector.

Key Observations

Factors such as particle size, dosage regimen, surface chemistry, and immunogenic potential of nanomaterials play a pivotal role in nanotoxicity. Nanoparticles may accumulate in diverse tissues, leading to oxidative stress, inflammation, and cellular and mitochondrial DNA damage. While regulatory agencies like the FDA, EMA, and CDE have issued guidelines for the safer use of nanomaterials, a globally harmonised framework is still absent.

Conclusions

A deep understanding of nanotoxicity is crucial for the safe and sustainable development of nanomaterials. Future efforts should incorporate artificial intelligence and machine learning to predict, assess, and mitigate nanotoxicity by analysing complex data, identifying patterns, and refining nanoparticle design.
纳米材料由于其独特的物理化学特性、多功能功能化和卓越的组织渗透能力,已广泛应用于医学和健康科学领域。随着纳米技术的不断发展,人们越来越关注这些材料的潜在毒理学效应。尽管它们有很好的生物医学应用前景,但全面的安全性数据仍然有限。目的本文详细介绍了纳米颗粒的物理化学性质,这些性质有助于对人类健康和环境产生潜在的不利影响。它探讨了通过纳米颗粒诱导毒性的细胞和分子机制。它评估了目前的纳米毒性评估策略,包括体外、体内和硅模型,以及支持的方法。该审查还涉及纳米毒理学的监管前景,概述了制定标准化方案以确保在卫生部门安全有效地使用纳米材料方面面临的挑战。纳米材料的粒径、给药方案、表面化学和免疫原性等因素在纳米毒性中起关键作用。纳米颗粒可能在多种组织中积累,导致氧化应激、炎症、细胞和线粒体DNA损伤。虽然像FDA、EMA和CDE这样的监管机构已经发布了纳米材料更安全使用的指导方针,但一个全球统一的框架仍然缺失。结论深入了解纳米毒性对纳米材料的安全和可持续发展至关重要。未来的努力应该结合人工智能和机器学习,通过分析复杂数据、识别模式和改进纳米颗粒设计来预测、评估和减轻纳米毒性。
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引用次数: 0
Assessment of ten potentially toxic metal in tea leaves from selected tea gardens in southern Western Ghats, India 印度西高止山脉南部选定茶园茶叶中10种潜在有毒金属的评估
Pub Date : 2025-05-03 DOI: 10.1016/j.jtemin.2025.100250
Eswaran Rangasamy, M. Muniasamy, Anupama Prakash

Introduction

Tea is one of the world’s non-alcoholic and caffeinated beverages. However, elemental content will accumulate in the tea due to the excess use of growth nutrients and inorganic fertilisers during the tea planting process and instruments used in processing, which pose health risks to tea consumers. Therefore, we investigated potentially toxic ten metals (PTMs) in tea leaves from selected tea gardens in the Nilgiris and Anamalais, Southern Western Ghats, Tamil Nadu, India.

Methods

Fresh tea leaves were collected from six different tea gardens during pre- monsoon 2023; in each tea garden are 9 samples, and the overall collected samples are 54. The tea leaf samples were digested with concentrated nitric acid, sulphuric acid, and perchloric acid triacid mixture 9:2:1 as mentioned in APHA. The samples were then analysed for elemental content with the help of an ICP-MS, Perkin Elmer NexIon-300x and USA.

Results

The highest elemental content detected in Gudalur was Al- 14,716 mg g-1, Fe - 3396.86 mg g-1 and Mn- 955.77 mg g-1. In the Valparai tea leaves, Fe-371.88 mg g-1, Mn-584.01 mg g-1 Ni-23.16 mg g-1. Cd was detected in all the studied tea gardens and above the maximum permissible limit. Pb concentration exceeded in Udhagai and Gudalur. Additionally, Ni concentration is high in Kothagiri and Udhagai tea gardens.

Conclusion

The results of our study suggest taking action to monitor tea samples regularly to improve the quality of the tea crop production. This can be achieved by implementing strict regulations, promoting eco-friendly practices, and raising awareness about the harmful effects of PTMs for tea growers.
茶是世界上不含酒精和咖啡因的饮料之一。然而,由于茶叶种植过程中生长营养素和无机肥料的过量使用以及加工过程中使用的工具,茶叶中的元素含量会积累,对茶叶消费者构成健康风险。因此,我们研究了印度泰米尔纳德邦西高特山脉南部Nilgiris和Anamalais茶园茶叶中潜在有毒的十种金属(PTMs)。方法对2023年季风前6个不同茶园的新鲜茶叶进行采集;每个茶园有9个样本,总共采集了54个样本。用APHA中提到的浓硝酸、硫酸和高氯酸三酸的混合物9:2:1消化茶叶样品。然后用ICP-MS, Perkin Elmer NexIon-300x和USA分析样品的元素含量。结果枸柚中元素含量最高的是Al- 14716 mg g-1、Fe - 3396.86 mg g-1和Mn- 955.77 mg g-1。在瓦尔帕莱茶叶中,Fe-371.88 mg g-1, Mn-584.01 mg g-1, Ni-23.16 mg g-1。所有茶园均检测到镉,镉含量均超过最大允许限量。Udhagai和Gudalur铅浓度超标。此外,Kothagiri和Udhagai茶园的镍浓度很高。结论建议采取措施,定期对茶叶样品进行监测,以提高茶叶生产质量。这可以通过实施严格的法规,促进生态友好的做法,以及提高对PTMs对茶农有害影响的认识来实现。
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引用次数: 0
Health risk assessment of cadmium, lead, iron, and zinc exposure from food and cigarettes in Pakistani smokers 巴基斯坦吸烟者从食物和香烟中接触镉、铅、铁和锌的健康风险评估
Pub Date : 2025-04-27 DOI: 10.1016/j.jtemin.2025.100251
Hamza Shafiq , Mamoona Amir , Aneela Hameed , Amir Ismail , Siti Suhaila Binti Harith , Areeba Usman

Aim and background

Smoking is a major contributor to illnesses and deaths, strongly associated with cardiovascular disease, lung cancer, and chronic pulmonary diseases. This study aims to analyze the levels of trace metals (Pb, Cd) and their potential impact on vital metals (Fe, Zn) in cigarette smokers and nonsmokers in Multan.

Material and methods

This case−control research included 537 human participants with similar socioeconomic status, consisting of four groups based on smoking intensity. Blood, wheat flour, drinking water, and cigarette samples were analyzed for key parameters and concentrations of Cd, Pb, Fe, and Zn. An Analysis of Variance (ANOVA) was performed to assess the differences in metal concentrations across the various sample types.

Results

The mean blood concentrations of Cd and Pb were as follows for the control, light, moderate, and heavy smoker groups, respectively; 0.10 and 3.64, 0.12 and 4.40, 0.14 and 4.59, and 0.14 and 5.05 µg dL⁻1. When considering all smoking individuals as a single group, blood Cd and Pb concentrations were 37 % and 28 % higher, respectively, compared to nonsmokers, and almost 53 % of samples exceeded blood-Cd from the safe limits of WHO (0.03−0.12 µg dL⁻1). While concentrations of blood Zn and Fe were almost 10 % lower in all smokers’ groups as compared to nonsmokers, respectively. Furthermore, the results indicated a substantial inverse relationship between the concentrations of Pb and Zn and the blood's Cd and Fe levels. Acceptable values of Cd and Pb were discovered in all wheat flour and water samples. Tobacco from different cigarette brands had exceeding levels of Cd, ranging from 0.03 to 0.21 µg g⁻1 and Pb, 0.49–2.92 µg g⁻1. For cancer risk assessment, the incremental lifetime cancer risk (ILCR) for Cd surpassed about 28.93 % of cigarette samples. Alarmingly, 99 % of cigarette samples exceeded the hazard quotient (HQ) for Cd and Pd, indicating Cd as a huge risk factor. Compared to non-smokers, smokers had higher levels of white blood cells, red blood cells, and hemoglobin with a lower body mass index.

Conclusion

These findings underscore cigarette smoking as a major source of Cd and Pb, potentially impacting the levels of Fe and Zn in human blood. Increasing awareness of the risks associated with smoking may prompt a government initiative calling for behavioural interventions.
目的和背景吸烟是导致疾病和死亡的主要因素,与心血管疾病、肺癌和慢性肺部疾病密切相关。本研究旨在分析木尔坦地区吸烟者和非吸烟者的微量金属(Pb、Cd)水平及其对重要金属(Fe、Zn)的潜在影响。材料和方法本病例对照研究包括537名具有相似社会经济地位的人类参与者,根据吸烟强度分为四组。分析血液、小麦粉、饮用水和香烟样品中Cd、Pb、Fe和Zn的关键参数和浓度。进行方差分析(ANOVA)来评估不同样品类型中金属浓度的差异。结果对照组、轻度吸烟组、中度吸烟组、重度吸烟组血Cd、Pb平均浓度分别为:0.10和3.64,0.12和4.40,0.14和4.59,0.14和5.05µg dL - 1。在考虑所有吸烟的个人作为一个群体,血镉和铅浓度高出37%和28%,分别与不吸烟者相比,和近53%的样本超过blood-Cd安全限制的人(0.03−0.12µg dL⁻1)。而所有吸烟者的血液锌和铁浓度分别比不吸烟者低近10%。此外,结果表明铅和锌的浓度与血液中的Cd和Fe水平呈显著的反比关系。所有小麦粉和水样中均发现镉和铅的可接受值。不同品牌香烟的镉和铅含量均超标,分别为0.03 - 0.21µg毒枭和0.49-2.92µg毒枭。在癌症风险评估方面,镉的终生癌症风险增量(ILCR)超过了约28.93%的卷烟样本。令人震惊的是,99%的卷烟样品超过了Cd和Pd的危害商(HQ),表明Cd是一个巨大的风险因素。与不吸烟者相比,吸烟者的白细胞、红细胞和血红蛋白水平较高,体重指数较低。这些发现强调吸烟是镉和铅的主要来源,可能影响人体血液中铁和锌的水平。人们对吸烟危害的认识不断提高,可能促使政府主动呼吁采取行为干预措施。
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引用次数: 0
Chemotherapeutic efficacy of curcumin against plasma and cardio-hepatorenal electrolyte disruption in dichlorvos-challenged rats via augmentation of Na⁺/K⁺-ATPase and Ca²⁺/Mg²⁺-ATPase activities 姜黄素通过增强Na + /K + - atp酶和Ca 2 + /Mg 2 + - atp酶活性对敌敌畏中毒大鼠血浆和心肝肾电解质破坏的化疗疗效
Pub Date : 2025-04-21 DOI: 10.1016/j.jtemin.2025.100248
Adio J. Akamo , Boluwatife A. Olagunju , Iyabode A. Kehinde , Naomi M. Akamo , Adetutu O. Ojelabi , Ofem E. Eteng , Ibiyemi O. Opowoye , Adedayo A. Adebisi , Taiwo S. Oguntona , Mushafau A. Akinsanya , Tobi S. Adekunbi , Olufemi M. Ajagun-Ogunleye , Opeyemi E. Popoola , Jacob K. Akintunde , Oluseyi A. Akinloye

Background

Dichlorvos (2,2-dichlorovinyl dimethyl phosphate or DDVP) is an effective organophosphate pesticide extensively employed in various pest management applications. However, it elicits cytotoxicity. Curcumin is a well-known antioxidant phytochemical, but publications lack data on its influence on DDVP-occasioned electrolyte disruption in animals. Hence, this exploration examined the antidotal efficacy of curcumin on electrolyte and ATPase pump distortions in a DDVP-poisoned rat model.

Methods

Forty-two rats were randomly distributed into seven groups (6 rats/group): DDVP alone (20 mg kg⁻¹ day⁻¹), DDVP supplemented with curcumin (50 and 100 mg kg⁻¹ day⁻¹), or reference medication atropine (0.2 mg kg⁻¹ day⁻¹), and curcumin alone (50 and 100 mg kg⁻¹ day⁻¹). DDVP was administered orally for one week, followed by two weeks of curcumin intervention. Then, the rats were humanely sacrificed. Plasma and visceral (liver, kidney, and heart) sodium, potassium, calcium, magnesium, chloride, and bicarbonate concentrations, and visceral Na⁺/K⁺-ATPase and Ca²⁺/Mg²⁺-ATPase activities, were quantified by spectrophotometry.

Results

DDVP significantly (p < 0.05) increased plasma potassium and magnesium concentrations by 7 % and 211 % folds, respectively, but decreased plasma sodium, calcium, chloride and bicarbonate by 11 %, 77 %, 58 %, and 62 %, respectively. Curcumin post-exposure therapy significantly (p < 0.05) (1) reversed DDVP-engendered plasma hyponatremia, hyperkalemia, hypocalcemia, hypermagnesemia, hypochloremia, and hypobicarbonemia; (2) upturned DDVP-triggered increases in visceral sodium, calcium, chloride, and bicarbonate concentration; (3) rescinded DDVP-instigated decreases in visceral potassium and magnesium levels; and (4) abated DDVP-prompted inhibitions of visceral Na⁺/K⁺-ATPase and Ca²⁺/Mg²⁺-ATPase activities to varying extents.

Conclusion

These results demonstrated that curcumin chemotherapy improved visceral functions and corrected ionoregulatory disruptions in DDVP-treated rats via modulation of adenosine triphosphatases pump.
敌敌畏(2,2-二氯乙烯基二甲基磷酸或DDVP)是一种有效的有机磷农药,广泛应用于各种害虫防治中。然而,它引起细胞毒性。姜黄素是一种众所周知的抗氧化植物化学物质,但出版物缺乏其对ddvp引起的动物电解质破坏的影响的数据。因此,本研究考察了姜黄素对ddvp中毒大鼠模型电解质和atp酶泵畸变的解毒作用。方法将42只大鼠随机分为7组(6只/组):单用DDVP (20 mg kg - d⁻¹)、DDVP加姜黄素(50和100 mg kg - d⁻¹)或对照药物阿托品(0.2 mg kg - d⁻¹)、单用姜黄素(50和100 mg kg - d⁻¹)。DDVP口服一周,姜黄素干预两周。然后,对老鼠进行人道牺牲。分光光度法测定血浆和内脏(肝、肾、心)钠、钾、钙、镁、氯化物和碳酸氢盐浓度,以及内脏Na + /K + - atp酶和Ca 2 + /Mg 2 + - atp酶活性。结果ddvp显著(p <;0.05)使血浆钾和镁浓度分别提高7%和211%,而使血浆钠、钙、氯和碳酸氢盐浓度分别降低11%、77%、58%和62%。姜黄素暴露后治疗显著(p <;0.05)(1)逆转ddvp引起的血浆低钠血症、高钾血症、低钙血症、高镁血症、低氯血症和低碳血症;(2) ddvp引发的内脏钠、钙、氯和碳酸氢盐浓度升高;(3)消除了ddvp引起的内脏钾、镁水平下降;(4)不同程度地减弱了ddvp对内脏Na + /K + - atp酶和Ca 2 + /Mg 2 + - atp酶活性的抑制作用。结论姜黄素化疗可通过调节三磷酸腺苷泵改善ddvp治疗大鼠内脏功能,纠正离子调节紊乱。
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引用次数: 0
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Journal of trace elements and minerals
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