Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis最新文献_第2页

Evaluation of antimicrobial and antioxidant activity of zinc oxide nanoparticles biosynthesized with Ziziphus spina-christi leaf extracts. 评估用刺五加叶提取物生物合成的纳米氧化锌的抗菌和抗氧化活性。

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: 2023-12-18 DOI: 10.1080/26896583.2023.2293443

Bushra H Shnawa, Parwin J Jalil, Ali Al-Ezzi, Renjbar M Mhamedsharif, Daniyal A Mohammed, Donia M Biro, Mukhtar H Ahmed

{"title":"Evaluation of antimicrobial and antioxidant activity of zinc oxide nanoparticles biosynthesized with Ziziphus spina-christi leaf extracts.","authors":"Bushra H Shnawa, Parwin J Jalil, Ali Al-Ezzi, Renjbar M Mhamedsharif, Daniyal A Mohammed, Donia M Biro, Mukhtar H Ahmed","doi":"10.1080/26896583.2023.2293443","DOIUrl":"10.1080/26896583.2023.2293443","url":null,"abstract":"Background: Due to their simplicity, eco-friendliness, availability and non-toxicity, the greener fabrication of metal and metal oxide nanoparticles has been a highly attractive research area over the last decade. Aim: This study aimed to assess the antioxidant and antimicrobial activities of the green synthesized zinc oxide nanoparticles (ZnO-NPs) using an aqueous leaf extract of Ziziphus spina-christi. Method: The antioxidant property of ZnO-NPs was analyzed by the α, α-diphenyl-β-picrylhydrazyl (DPPH) and hydrogen peroxide (H2O2). Additionally, the diffusion agar method assessed the antimicrobial activities against bacteria and fungi. Results: ZnO-NPs synthesized by Z. spina-christi had shown promising H2O2 and DPPH free radical scavenging actions compared to vitamin C. The ZnO-NPs exhibited significant antibacterial activity against the tested bacteria with various susceptibility as a concentration-dependent effect. The largest zone of inhibition for Staphylococcus aureus (S. aureus) was observed (36 ± 2 mm) compared to Escherichia coli (E. coli) (15 ± 2 mm) by the same concentration of ZnO-NPs. The ZnO-NPs showed remarkable antifungal activity against Aspergillus niger. Conclusion: It can be concluded that, ZnO-NP have been imposed as suitable antimicrobial agent being able to combat both S. aureus and E. coli in vitro.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138799657","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

Heavy metal and microbial testing of selected cosmetic products in the Palestinian market. 对巴勒斯坦市场上选定的化妆品进行重金属和微生物检测。

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: 2024-01-19 DOI: 10.1080/26896583.2023.2281199

Murad Abualhasan, Liza Naffa, Ro'a Alarda, Baraa Zahi, Ameed Amireh, Munir Al-Atrash

{"title":"Heavy metal and microbial testing of selected cosmetic products in the Palestinian market.","authors":"Murad Abualhasan, Liza Naffa, Ro'a Alarda, Baraa Zahi, Ameed Amireh, Munir Al-Atrash","doi":"10.1080/26896583.2023.2281199","DOIUrl":"10.1080/26896583.2023.2281199","url":null,"abstract":"Excessive and continuous use of cosmetic products containing heavy metals can lead to harmful effects. International regulations mandate limited quantities of heavy metals contamination in cosmetic preparations to ensure consumer safety. This research aims to evaluate heavy metal and microbial contamination levels in selected cosmetic products available in the Palestinian market. We collected 35 samples randomly from 23 companies, representing four product types, and analyzed them for the presence of seven heavy metals: zinc (Zn), cadmium (Cd), lead (Pb), chromium (Cr), iron (Fe), copper (Cu), and arsenic (As) using an atomic absorption spectrometer. We also interviewed pharmacists who sold these cosmetics to assess their knowledge of allowed limits and toxic effects associated with increased heavy metal content in cosmetics. The results indicated that all tested products exceeded the allowed limit for Cd (9.5 ± 2.3 ppm), Cu (33.8 ± 9.2 ppm), and Zn (151.0 ± 7.4 ppm). However, none of the tested samples showed microbial contamination. These findings underscore the significant heavy metal contamination of cosmetics present in the Palestinian market. Thus, there is a pressing need to register and quality-test all cosmetic products sold in the Palestinian market and to raise the pharmacists' awareness and knowledge regarding heavy metals in cosmetics.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138500105","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

Cellular and molecular alterations in a human hepatocellular in vitro model of nonalcoholic fatty liver disease development and stratification. 非酒精性脂肪肝发展和分层的人类肝细胞体外模型中的细胞和分子变化。

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: 2024-01-19 DOI: 10.1080/26896583.2023.2293493

Rose A Willett, Volodymyr P Tryndyak, Frederick A Beland, Igor P Pogribny

{"title":"Cellular and molecular alterations in a human hepatocellular in vitro model of nonalcoholic fatty liver disease development and stratification.","authors":"Rose A Willett, Volodymyr P Tryndyak, Frederick A Beland, Igor P Pogribny","doi":"10.1080/26896583.2023.2293493","DOIUrl":"10.1080/26896583.2023.2293493","url":null,"abstract":"The rapidly increasing incidence of nonalcoholic fatty liver disease (NAFLD) is a growing health crisis worldwide. If not detected early, NAFLD progression can lead to irreversible pathological states, including liver fibrosis and cirrhosis. Using in vitro models to understand the molecular pathogenesis has been extremely beneficial; however, most studies have utilized only short-term exposures, highlighting a limitation in current research to model extended fat-induced liver injury. We treated Hep3B cells continuously with a low dose of oleic and palmitic free fatty acids (FFAs) for 7 or 28 days. Transcriptomic analysis identified dysregulated molecular pathways and differential expression of 984 and 917 genes after FFA treatment for 7 and 28 days respectively. DNA methylation analysis of altered DNA methylated regions (DMRs) found 7 DMRs in common. Pathway analysis of differentially expressed genes (DEGs) revealed transcriptomic changes primarily involved in lipid metabolism, small molecule biochemistry, and molecular transport. Western blot analysis revealed changes in PDK4 and CPT1A protein levels, indicative of mitochondrial stress. In line with this, there was mitochondrial morphological change demonstrating breakdown of the mitochondrial network. This in vitro model of human NAFL mimics results observed in human patients and may be used as a pre-clinical model for drug intervention.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138799437","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":"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 via 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 (Cyp4a1, Nr1d1, Acot1, Acot2, Ehhadh, and Vnn1) 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 Ccnd1, Ccnb1, Ccna2, and Ccne2 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.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"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 Echinacea.","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":"Echinacea 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 Echinacea samples of three species - Echinacea purpurea, Echinacea angustifolia, and Echinacea pallida - 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 Echinacea. While the results suggest that Echinacea 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 Echinacea species.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"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 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: 2024-01-17 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":"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.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"PeriodicalIF":2.5,"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

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":"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.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"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":"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 (n = 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 ∑14TDCs. There was no significant relationship between TDCs and THs in either simple or multivariate linear regression analyses.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"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":"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-5ASETD2-KO) and Met-5A were estimated to be 0.71 μg/cm2 and 1.8 μg/cm2, 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-5ASETD2-KO (chronical Cro-Met-5ASETD2-KO) had higher colony formation and increased telomerase reverse transcriptase (TERT) protein levels than chronical crocidolite-exposed Met-5A (chronical Cro-Met-5A) and Met-5ASETD2-KO. Chronical Cro-Met-5ASETD2-KO 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-5ASETD2-KO compared with their corresponding cells without crocidolite exposure. BIBR 1532, an inhibitor targeting TERT, partially reduced colony formation and TL for chronical Cro-Met-5ASETD2-KO, 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.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"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

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 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: 10.1080/26896583.2023.2278957

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":"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 222Rn concentration in drinking water of Nigeria at 25.01, with 95% confidence intervals (CI) of 7.62 and 82.09, indicating significant heterogeneity of (I2 = 100%; p < 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 10-3 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.","PeriodicalId":53200,"journal":{"name":"Journal of Environmental Science and Health Part C-Toxicology and Carcinogenesis","volume":null,"pages":null},"PeriodicalIF":2.5,"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