Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis最新文献

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Primary Microplastics in the Ecosystem: Ecological Effects, Risks, and Comprehensive Perspectives on Toxicology and Detection Methods. 生态系统中的原生微塑料:生态影响、风险以及毒理学和检测方法的综合视角。
IF 1.2 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2024-01-01 Epub Date: 2024-07-05 DOI: 10.1080/26896583.2024.2370715
Pooja Singh, Gunjan Varshney, Raminder Kaur
{"title":"Primary Microplastics in the Ecosystem: Ecological Effects, Risks, and Comprehensive Perspectives on Toxicology and Detection Methods.","authors":"Pooja Singh, Gunjan Varshney, Raminder Kaur","doi":"10.1080/26896583.2024.2370715","DOIUrl":"10.1080/26896583.2024.2370715","url":null,"abstract":"<p><p>Recent discoveries of microplastics in cities, suburbs, and even remote locations, far from microplastic source regions, have raised the possibility of long-distance transmission of microplastics in many ecosystems. A little is known scientifically about the threat that it posed to the environment by microplastics. The problem's apparent size necessitates the rapid development of reliable scientific advice regarding the ecological risks of microplastics. These concerns are brought on by the lack of consistent sample and identification techniques, as well as the limited physical analysis and understanding of microplastic pollution. This review provides insight regarding some unaddressed issues about the occurrence, fate, movement, and impact of microplastics, in general, with special emphasis on primary microplastics. The approaches taken in the earlier investigations have been analyzed and different recommendations for future research have been suggested.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"314-365"},"PeriodicalIF":1.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Evaluating the mode of action of perfluorooctanoic acid-induced liver tumors in male Sprague-Dawley rats using a toxicogenomic approach. 利用毒物基因组学方法评估全氟辛酸诱导雄性 Sprague-Dawley 大鼠肝脏肿瘤的作用模式。
IF 1.2 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2024-01-01 Epub Date: 2024-03-18 DOI: 10.1080/26896583.2024.2327969
Xilin Li, Zemin Wang, Qiangen Wu, James E Klaunig
{"title":"Evaluating the mode of action of perfluorooctanoic acid-induced liver tumors in male Sprague-Dawley rats using a toxicogenomic approach.","authors":"Xilin Li, Zemin Wang, Qiangen Wu, James E Klaunig","doi":"10.1080/26896583.2024.2327969","DOIUrl":"10.1080/26896583.2024.2327969","url":null,"abstract":"<p><p>The mode of action (MOA) underlying perfluorooctanoic acid (PFOA)-induced liver tumors in rats is proposed to involve peroxisome proliferator-activated receptor α (PPARα) agonism. Despite clear PPARα activation evidence in rodent livers, the mechanisms driving cell growth remain elusive. Herein, we used dose-responsive apical endpoints and transcriptomic data to examine the proposed MOA. Male Sprague-Dawley rats were treated with 0, 1, 5, and 15 mg/kg PFOA for 7, 14, and 28 days <i>via</i> oral gavage. We showed PFOA induced hepatomegaly along with hepatocellular hypertrophy in rats. PPARα was activated in a dose-dependent manner. Toxicogenomic analysis revealed six early biomarkers (<i>Cyp4a1</i>, <i>Nr1d1</i>, <i>Acot1</i>, <i>Acot2</i>, <i>Ehhadh</i>, and <i>Vnn1</i>) in response to PPARα activation. A transient rise in hepatocellular DNA synthesis was demonstrated while Ki-67 labeling index showed no change. Transcriptomic analysis indicated no significant enrichment in pathways related to DNA synthesis, apoptosis, or the cell cycle. Key cyclins including <i>Ccnd1</i>, <i>Ccnb1</i>, <i>Ccna2</i>, and <i>Ccne2</i> were dose-dependently suppressed by PFOA. Oxidative stress and the nuclear factor-κB signaling pathway were unaffected. Overall, evidence for PFOA-induced hepatocellular proliferation was transient within the studied timeframe. Our findings underscore the importance of considering inter-species differences and chemical-specific effects when evaluating the carcinogenic risk of PFOA in humans.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"189-213"},"PeriodicalIF":1.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140144559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Assessment of clinical chemistry and hematological parameters in female Sprague-Dawley rats following a 7-day oral exposure to three different species of Echinacea. 评估雌性 Sprague-Dawley 大鼠口服三种不同紫锥菊 7 天后的临床化学和血液学参数。
IF 2.5 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2024-01-01 Epub Date: 2024-03-07 DOI: 10.1080/26896583.2024.2325851
Suresh K Nagumalli, Joshua T Salley, Jeffrey D Carstens
{"title":"Assessment of clinical chemistry and hematological parameters in female Sprague-Dawley rats following a 7-day oral exposure to three different species of <i>Echinacea</i>.","authors":"Suresh K Nagumalli, Joshua T Salley, Jeffrey D Carstens","doi":"10.1080/26896583.2024.2325851","DOIUrl":"10.1080/26896583.2024.2325851","url":null,"abstract":"<p><p><i>Echinacea</i> has grown in popularity due to its broad therapeutic benefits. Despite its popularity, comprehensive safety evaluations for three medicinal species are limited. In this study, female Sprague-Dawley rats received oral doses (0, 25, 50, 100, 200 mg/kg/d) of 75% (v/v) ethanol extract from the aerial parts of 9 <i>Echinacea</i> samples of three species - <i>Echinacea purpurea</i>, <i>Echinacea angustifolia</i>, and <i>Echinacea pallida</i> - over a 7-day period. Blood and serum samples, collected twenty-four hours post the final dose, were analyzed for hematology and clinical chemistry parameters. The results revealed varied effects across the tested samples, with many parameters showing no discernible impacts at administered doses. Subtle alterations were observed in parameters such as relative liver weight, alkaline phosphatase (ALP), and platelet count. Parameters like relative spleen weight, alanine transaminase (ALT), glucose, urea, hematocrit, hemoglobin, and RBC count exhibited effects in only one out of the nine samples tested. These findings emphasize the heterogeneity in the effects of <i>Echinacea</i>. While the results suggest that <i>Echinacea</i> samples might be considered relatively safe, potential clinical implications warrant caution and underscore the importance of extended testing. A comprehensive toxicity profile assessment remains paramount to conclusively ascertain the safety of three <i>Echinacea</i> species.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"154-171"},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140061259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Effects of hexavalent chromium on mitochondria and their implications in carcinogenesis. 六价铬对线粒体的影响及其在致癌过程中的意义。
IF 1.2 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2024-01-01 Epub Date: 2024-01-17 DOI: 10.1080/26896583.2024.2301899
Anish Alur, John Phillips, Dazhong Xu
{"title":"Effects of hexavalent chromium on mitochondria and their implications in carcinogenesis.","authors":"Anish Alur, John Phillips, Dazhong Xu","doi":"10.1080/26896583.2024.2301899","DOIUrl":"10.1080/26896583.2024.2301899","url":null,"abstract":"<p><p>Hexavalent chromium (Cr(VI)) is a well-known occupational and environmental human carcinogen. The cellular effect of Cr(VI) is complex and often nonspecific due to its ability to modulate multiple cellular targets. The toxicity of Cr(VI) is strongly linked to the generation of reactive oxygen species (ROS) during its reduction process. ROS can cause oxidation of cellular macromolecules, such as proteins, lipids, and DNA, thereby altering their functions. A major genotoxic effect of Cr(VI) that contributes to carcinogenesis is the formation of DNA adducts, which can lead to DNA damage. Modulations of cellular signaling pathways and epigenetics may also contribute to the carcinogenic effects of Cr(VI). Cr(VI) has a major impact on many aspects of mitochondrial biology, including oxidative phosphorylation, mitophagy, and mitochondrial biogenesis. These effects have the potential to alter the trajectory of Cr(VI)-induced carcinogenic process. This perspective article summarizes current understandings of the effect of Cr(VI) on mitochondria and discusses the future directions of research in this area, particularly with regard to carcinogenesis.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"109-125"},"PeriodicalIF":1.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139478766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
PERform: assessing model performance with predictivity and explainability readiness formula. PERform:用预测性和可解释性准备公式评估模型性能。
IF 1.2 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2024-01-01 Epub Date: 2024-04-15 DOI: 10.1080/26896583.2024.2340391
Leihong Wu, Joshua Xu, Weida Tong
{"title":"PERform: assessing model performance with predictivity and explainability readiness formula.","authors":"Leihong Wu, Joshua Xu, Weida Tong","doi":"10.1080/26896583.2024.2340391","DOIUrl":"10.1080/26896583.2024.2340391","url":null,"abstract":"<p><p>In the rapidly evolving field of artificial intelligence (AI), explainability has been traditionally assessed in a post-modeling process and is often subjective. In contrary, many quantitative metrics have been routinely used to assess a model's performance. We proposed a unified formular named PERForm, by incorporating explainability as a weight into the existing statistical metrics to provide an integrated and quantitative measure of both predictivity and explainability to guide model selection, application, and evaluation. PERForm was designed as a generic formula and can be applied to any data types. We applied PERForm on a range of diverse datasets, including DILIst, Tox21, and three MAQC-II benchmark datasets, using various modeling algorithms to predict a total of 73 distinct endpoints. For example, AdaBoost algorithms exhibited superior performance (PERForm AUC for AdaBoost is 0.129 where Linear regression is 0) in DILIst prediction, where linear regression outperformed other models in the majority of Tox21 endpoints (PERForm AUC for linear regression is 0.301 where AdaBoost is 0.283 in average). This research marks a significant step toward comprehensively evaluating the utility of an AI model to advance transparency and interpretability, where the tradeoff between a model's performance and its interpretability can have profound implications.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"298-313"},"PeriodicalIF":1.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11664459/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
引用次数: 0
Protective effects of sitagliptin on methotrexate-induced nephrotoxicity in rats. 西他列汀对甲氨蝶呤引起的大鼠肾毒性的保护作用
IF 2.5 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2023-01-01 Epub Date: 2023-04-03 DOI: 10.1080/26896583.2023.2186683
Leila Afkhami Fard, Hassan Malekinejad, Zeinab Esmaeilzadeh, Abbas Jafari, Mohammad Rafi Khezri, Morteza Ghasemnejad-Berenji
{"title":"Protective effects of sitagliptin on methotrexate-induced nephrotoxicity in rats.","authors":"Leila Afkhami Fard, Hassan Malekinejad, Zeinab Esmaeilzadeh, Abbas Jafari, Mohammad Rafi Khezri, Morteza Ghasemnejad-Berenji","doi":"10.1080/26896583.2023.2186683","DOIUrl":"10.1080/26896583.2023.2186683","url":null,"abstract":"<p><p>Methotrexate (MTX), a cytotoxic chemotherapeutic and immunosuppressant agent, is widely used in the treatment of autoimmune diseases and different types of cancers. However, its use has been limited by its life-threatening side effects, including nephrotoxicity and hepatotoxicity. The purpose of this study was to investigate the protective effect of sitagliptin on methotrexate (MTX)-induced nephrotoxicity in rats. Twenty-four rats were divided into four groups: control group, which received the vehicle for 6 days; MTX group, which received a single dose of MTX, followed by five daily doses of vehicle dosing; MTX + sitagliptin group, which received a single dose of MTX 1 h after the first sitagliptin treatment and six daily doses of sitagliptin; and sitagliptin group, which received sitagliptin for 6 days. Both MTX and sitagliptin were given as intraperitoneal injections at a dose of 20 mg/kg body weight. All rats were euthanized on the seventh day of the study. Kidney tissues were harvested and blood samples were collected. Serum levels of blood urea nitrogen (BUN) and creatinine were evaluated. Furthermore, catalase, glutathione peroxidase, superoxide dismutase activities, and malondialdehyde (MDA) levels were determined in kidney tissue. In addition, histopathological analysis was conducted. Histopathological evaluation showed that MTX-induced marked kidney injury. Biochemical analysis revealed a significant increase of BUN and creatinine in the serum of the MTX group. Furthermore, oxidative stress and depressed antioxidant system of the kidney tissues were evident in the MTX group. Sitagliptin did not affect these endpoints when administered alone, but it significantly attenuated the observed MTX-induced effects. These results suggest that sitagliptin exhibits potent anti-oxidant properties against the nephrotoxicity induced by MTX in rats.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":"41 1-2","pages":"22-35"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10092894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Dietary exposure to thyroid disrupting chemicals: a community-based study in Canada. 甲状腺干扰化学物质的膳食暴露:一项基于加拿大社区的研究。
IF 2.5 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2023-01-01 Epub Date: 2023-03-06 DOI: 10.1080/26896583.2023.2174763
Nicole Babichuk, Atanu Sarkar, Shree Mulay, John Knight, Edward Randell
{"title":"Dietary exposure to thyroid disrupting chemicals: a community-based study in Canada.","authors":"Nicole Babichuk, Atanu Sarkar, Shree Mulay, John Knight, Edward Randell","doi":"10.1080/26896583.2023.2174763","DOIUrl":"10.1080/26896583.2023.2174763","url":null,"abstract":"<p><p>The marine ecosystem around the Island of Newfoundland is contaminated by thyroid disrupting chemicals (TDCs). Coastal inhabitants may be exposed to TDCs through consumption of contaminated local seafood products and affecting thyroid functions. The aim of this study was to explore: (1) consumption frequency of local seafood products consumed by rural residents, (2) thyroid hormones (THs) and TDCs concentrations in residents, (3) relationships between local seafood consumption, TDC concentrations, and THs. Participants (<i>n</i> = 80) were recruited from two rural Newfoundland communities. Seafood consumption was measured through a validated seafood consumption questionnaire. Blood samples were collected from all participants and tested for THs (thyroid stimulating hormone, free thyroxine, free triiodothyronine) and TDCs, including polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), and dichlorodiphenyldichloroethylene (p,p'-DDE). Cod was the most frequently consumed local species, but there was a wide range of other local species consumed. Older participants (>50 years) had greater plasma concentrations of PBB-153, PCBs and p,p'-DDE, and males had higher concentrations of all TDCs than females. The consumption frequency of local cod was found to be positively associated with several PCB congeners, p,p'-DDE and ∑<sub>14</sub>TDCs. There was no significant relationship between TDCs and THs in either simple or multivariate linear regression analyses.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":"41 1-2","pages":"1-21"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9732164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1
Effects of SETD2 on telomere length and malignant transformation property of Met-5A after one-month crocidolite exposure. SETD2对青石棉暴露一个月后Met-5A端粒长度和恶性转化特性的影响。
IF 2.5 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2023-01-01 Epub Date: 2023-12-13 DOI: 10.1080/26896583.2023.2271822
Min Yu, Dan Yang, Chiyun Chen, Hailing Xia
{"title":"Effects of SETD2 on telomere length and malignant transformation property of Met-5A after one-month crocidolite exposure.","authors":"Min Yu, Dan Yang, Chiyun Chen, Hailing Xia","doi":"10.1080/26896583.2023.2271822","DOIUrl":"10.1080/26896583.2023.2271822","url":null,"abstract":"<p><p>Crocidolite is a carcinogen contributing to the pathogenesis of malignant mesothelioma. This study aimed to characterize the possible telomere-related events mediating the malignant transformation of mesothelial cells with and without SETD2 under crocidolite exposure. The crocidolite concentration resulting in 90% viable SETD2 knockout Met-5A (Met-5A<sup>SETD2-KO</sup>) and Met-5A were estimated to be 0.71 μg/cm<sup>2</sup> and 1.8 μg/cm<sup>2</sup>, respectively, during 72 h of exposure, which was further employed in chronical crocidolite exposure during a 72 h exposure interval per time up to 1 month. Chronical crocidolite-exposed Met-5A<sup>SETD2-KO</sup> (chronical Cro-Met-5A<sup>SETD2-KO</sup>) had higher colony formation and increased telomerase reverse transcriptase (TERT) protein levels than chronical crocidolite-exposed Met-5A (chronical Cro-Met-5A) and Met-5A<sup>SETD2-KO</sup>. Chronical Cro-Met-5A<sup>SETD2-KO</sup> had longer telomere length (TL) than chronical Cro-Met-5A, although there were no changes in TL for either chronical Cro-Met-5A or chronical Cro-Met-5A<sup>SETD2-KO</sup> compared with their corresponding cells without crocidolite exposure. BIBR 1532, an inhibitor targeting TERT, partially reduced colony formation and TL for chronical Cro-Met-5A<sup>SETD2-KO</sup>, while BIBR 1532 reduced TL but had no effect on colony formation for chronical Cro-Met-5A. Therefore, SETD2 deficient mesothelial cells are susceptible to malignant transformation during chronical crocidolite exposure, and TERT-dependent TL modification likely partially drives SETD2 loss-mediated early onset of mesothelial malignant transformation.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"121-134"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71415187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Determination of the genotoxic effects of sweeteners, mannitol and lactitol. 甜味剂、甘露醇和乳醇基因毒性作用的测定。
IF 2.5 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2023-01-01 Epub Date: 2023-12-13 DOI: 10.1080/26896583.2023.2275984
Ebru Eker-Kartal, Ece Avuloglu-Yilmaz
{"title":"Determination of the genotoxic effects of sweeteners, mannitol and lactitol.","authors":"Ebru Eker-Kartal, Ece Avuloglu-Yilmaz","doi":"10.1080/26896583.2023.2275984","DOIUrl":"10.1080/26896583.2023.2275984","url":null,"abstract":"<p><p>The changes in dietary habit around the world have led to an increased use of additives in the food. The safety of food additives has been a main focus of research for many years due to the ongoing debate on their potential effects on health. In this study, the <i>in vitro</i> genotoxic effects of mannitol and lactitol, polyols used as sweetener food additives, were evaluated using chromosomal aberrations (CAs) and micronucleus (MN) assays in human peripheral lymphocytes. Additionally, the effects of these sweeteners on the mitotic index (MI) and nuclear division index (NDI) were investigated. Concentrations of 500, 1000, 2000, 4000, and 8000 μg/mL for mannitol and 250, 500, 1000, 2000, and 4000 μg/mL for lactitol were used. The results indicated that both polyols did not affect CA and MN frequency, and did not cause a significant change in NDI at all treatment concentratoins. However, mannitol (except at concentrations of 500 and 1000 μg/mL) and lactitol (except at 250 μg/mL) significantly decreased the MI compared to the control at almost all concentrations and treatment times. In conclusion, it was observed that mannitol and lactitol did not have a significant genotoxic effect at the concentrations used in human lymphocytes <i>in vitro</i>.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"135-149"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138500104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
A systematic review and meta-analysis of radon risk exposure from drinking water resources in Nigeria. 尼日利亚饮用水资源氡风险暴露的系统审查和荟萃分析。
IF 1.2 4区 环境科学与生态学
Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis Pub Date : 2023-01-01 Epub Date: 2023-12-13 DOI: 10.1080/26896583.2023.2278957
Adamu Usman Mohammed, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Noorain Mohd Isa, Abdullahi Suleiman Arabi, Muyiwa Michael Orosun
{"title":"A systematic review and meta-analysis of radon risk exposure from drinking water resources in Nigeria.","authors":"Adamu Usman Mohammed, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Noorain Mohd Isa, Abdullahi Suleiman Arabi, Muyiwa Michael Orosun","doi":"10.1080/26896583.2023.2278957","DOIUrl":"10.1080/26896583.2023.2278957","url":null,"abstract":"<p><p>Elevated radon concentrations in drinking water pose an increased risk of cancer among nonsmokers. A Monte-Carlo Simulation was employed to assess the effective dose and cancer risk associated with radon exposure in humans, utilizing a systematic review and meta-analysis of related studies. These studies were sourced from databases including PubMed, Web of Science, Scopus, Science Direct, and Google Scholar, focusing on drinking water from Nigeria's six geopolitical zones. The random effects models revealed a <sup>222</sup>Rn concentration in drinking water of Nigeria at 25.01, with 95% confidence intervals (CI) of 7.62 and 82.09, indicating significant heterogeneity of (I<sup>2</sup> = 100%; <i>p</i> < 0.001). The probabilistic risk of effective dose revealed a best-scenario (P 5%) at Kundiga and Magiro that exceeded the World Health Organization's (WHO) recommended effective dose limit of 200 µSv/y. Conversely, the worst-case scenario (P 95%) indicated concentrations surpassing the recommended limit at Kundiga, Edbe, Magiro, Ekiti, and Abeokuta. Excess Life Cancer Risk for infants, children, and adults attributed to the ingestion and inhalation of radon from various drinking water sources exceeded the recommended values of 0.2 x 10<sup>-3</sup> established by the International Commission on Radiological Protection (ICRP) and the United Nations Scientific Committee on the Effect of Atomic Radiation (UNSCEAR). It underscores the necessity for treating radon-polluted water, employing methos such as aeration and granular activated carbon (GAC) processes.</p>","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":" ","pages":"150-174"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138500103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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