Pub Date : 2024-11-16DOI: 10.1016/j.etap.2024.104589
Beiying Wang, Wei Hong, Zhiping Wu, Xiaocui Li
Per- and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants linked to reproductive disruptions. This study investigated the relationship between PFAS exposure and missed miscarriage in a hospital-based, case-control study in Shanghai, China. There were 393 women in our research, including 198 cases and 195 controls. Concentrations of 30 PFAS in plasma were quantified using HPLC-MS/MS, and 15 PFAS were detected at a rate greater than 90 percent. PFOA, L-PFOS, and PFOS isomers were significantly higher in the cases than those in the controls. 13 PFAS showed significant positive associations with miscarriage risk after adjustment for confounders, particularly PFOA (OR: 2.99, 95 % CI: 1.96–4.68) and various PFOS isomers. BKMR analysis confirmed higher overall PFAS levels were associated with increased miscarriage risk. These findings highlight the potential reproductive toxicity of PFAS and underscore the need for further investigations and regulatory actions to mitigate PFAS exposure in pregnant women.
{"title":"Association between exposure to per- and polyfluoroalkyl substances and missed miscarriage: A hospital-based case-control study in Shanghai, China","authors":"Beiying Wang, Wei Hong, Zhiping Wu, Xiaocui Li","doi":"10.1016/j.etap.2024.104589","DOIUrl":"10.1016/j.etap.2024.104589","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants linked to reproductive disruptions. This study investigated the relationship between PFAS exposure and missed miscarriage in a hospital-based, case-control study in Shanghai, China. There were 393 women in our research, including 198 cases and 195 controls. Concentrations of 30 PFAS in plasma were quantified using HPLC-MS/MS, and 15 PFAS were detected at a rate greater than 90 percent. PFOA, L-PFOS, and PFOS isomers were significantly higher in the cases than those in the controls. 13 PFAS showed significant positive associations with miscarriage risk after adjustment for confounders, particularly PFOA (OR: 2.99, 95 % CI: 1.96–4.68) and various PFOS isomers. BKMR analysis confirmed higher overall PFAS levels were associated with increased miscarriage risk. These findings highlight the potential reproductive toxicity of PFAS and underscore the need for further investigations and regulatory actions to mitigate PFAS exposure in pregnant women.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104589"},"PeriodicalIF":4.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-13DOI: 10.1016/j.etap.2024.104588
Pavla Pabiskova , Bruno Sopko , Elena Shcherbachenko , Tomas Erban
A pesticide-free model soil was pretreated with field-realistic doses/applications of the insecticide, Biscaya 240 OD; the fungicide Tilmor; the growth regulator, Atonik and their mixture. Because Folsomia candida is eyeless, unpigmented, avoids light, and prefers dark, wet and cold conditions, we grew and tested it in the dark and at 18°C. Survival of springtails added to soil at 50 % moisture was assessed after 28 days. The experiments were repeated three times in order to confirm the validity of the test and results. The mixture decreased the survival most significantly. Bayesian statistics showed that pesticide treatment had a greater effect than repeating the experiment. Further tests revealed that the negative effect of the mixture on springtail survival was effectively suppressed by the application of biotin (vitamin B7), whereas riboflavin (vitamin B2) had little effect. Vitamins can reduce the toxicity of agrochemicals in the soil through potential effects on soil biological activity.
{"title":"Effect of an insecticide, fungicide and plant growth regulator and their mixture on the survival of the springtail Folsomia candida and the potential reduction of toxicity by vitamins","authors":"Pavla Pabiskova , Bruno Sopko , Elena Shcherbachenko , Tomas Erban","doi":"10.1016/j.etap.2024.104588","DOIUrl":"10.1016/j.etap.2024.104588","url":null,"abstract":"<div><div>A pesticide-free model soil was pretreated with field-realistic doses/applications of the insecticide, Biscaya 240 OD; the fungicide Tilmor; the growth regulator, Atonik and their mixture. Because <em>Folsomia candida</em> is eyeless, unpigmented, avoids light, and prefers dark, wet and cold conditions, we grew and tested it in the dark and at 18°C. Survival of springtails added to soil at 50 % moisture was assessed after 28 days. The experiments were repeated three times in order to confirm the validity of the test and results. The mixture decreased the survival most significantly. Bayesian statistics showed that pesticide treatment had a greater effect than repeating the experiment. Further tests revealed that the negative effect of the mixture on springtail survival was effectively suppressed by the application of biotin (vitamin B7), whereas riboflavin (vitamin B2) had little effect. Vitamins can reduce the toxicity of agrochemicals in the soil through potential effects on soil biological activity.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104588"},"PeriodicalIF":4.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142635013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-06DOI: 10.1016/j.etap.2024.104586
Guilherme Andrade Neto Schmitz Boeing , Michele Provase , Elisabete Tsukada , Raquel F. Salla , Walter Ruggeri Waldman , Fábio Camargo Abdalla
While bumblebees may be exposed to microplastics (MPs), the effects on them are not well studied. Therefore, in this research, we assessed the cytotoxicity of pristine and photodegraded spray paint-derived MPs on the midgut, Malpighian tubules, and hepato-nephrocitic system cells of Bombus atratus workers exposed to 50 mg.L−1 MPs for 96 hours. Histological and histochemical analyses revealed that pristine MPs caused subtle cellular changes, while the exposure to photodegraded MPs led to significant vacuolization, nuclear condensation, and pyknosis. These effects are possibly linked to the release of potentially toxic elements (PTEs) like Copper, Manganese, and Iron from photodegraded MPs, which exceeded Brazil's CONAMA safety limits. Photodegraded MPs also reduced body weight, disrupting homeostasis and potentially decreasing bumblebee’s fitness. These findings highlight the importance of studying the toxicity of environmentally realistic MPs, as plastic composition and weathering significantly influence their harmful effects.
{"title":"Spray paint-derived microplastics and incorporated substances as ecotoxicological contaminants in the neotropical bumblebee Bombus atratus","authors":"Guilherme Andrade Neto Schmitz Boeing , Michele Provase , Elisabete Tsukada , Raquel F. Salla , Walter Ruggeri Waldman , Fábio Camargo Abdalla","doi":"10.1016/j.etap.2024.104586","DOIUrl":"10.1016/j.etap.2024.104586","url":null,"abstract":"<div><div>While bumblebees may be exposed to microplastics (MPs), the effects on them are not well studied. Therefore, in this research, we assessed the cytotoxicity of pristine and photodegraded spray paint-derived MPs on the midgut, Malpighian tubules, and hepato-nephrocitic system cells of <em>Bombus atratus</em> workers exposed to 50 mg.L<sup>−1</sup> MPs for 96 hours. Histological and histochemical analyses revealed that pristine MPs caused subtle cellular changes, while the exposure to photodegraded MPs led to significant vacuolization, nuclear condensation, and pyknosis. These effects are possibly linked to the release of potentially toxic elements (PTEs) like Copper, Manganese, and Iron from photodegraded MPs, which exceeded Brazil's CONAMA safety limits. Photodegraded MPs also reduced body weight, disrupting homeostasis and potentially decreasing bumblebee’s fitness. These findings highlight the importance of studying the toxicity of environmentally realistic MPs, as plastic composition and weathering significantly influence their harmful effects.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104586"},"PeriodicalIF":4.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-04DOI: 10.1016/j.etap.2024.104587
Thais R.R. Alves , Matheus F. Trivellato , Tainá A.L. Freitas , Aline Y. Kato , Cássia R.A. Gomes , Yara M.M. Ferraz , Jéssica A. Serafim , David De Jong , Evandro P. Prado , Eduardo F. Vicente , Ricardo O. Orsi , Gener T. Pereira , Camila A. Miranda , Fábio E. Mingatto , Daniel Nicodemo
Experiments were conducted to determine the effects of a triple-action fungicide on bees and whether improved nutrition can ameliorate eventual negative impacts. In cage tests, newly-emerged bees from well fed and from nutritionally-restricted honey bee colonies were fed for five days with pollen from sunflowers that had been sprayed or not with a commercial fungicide containing bixafen, prothioconazole and trifloxystrobin. Bees from well-fed colonies were significantly larger and consumed more uncontaminated pollen. They also exhibited increased glutathione peroxidase activity and higher concentrations of pyridine nucleotides, both of which are involved in antioxidase defense. However, pollen contaminated with fungicide led to an increase in lipoperoxidation, regardless of nutritional status. Bee longevity was reduced by both fungicide contamination of the pollen diet and poor nutritional condition. The fungicide adversely affected bees fed with contaminated pollen, though nutritional supplementation of the bee colonies that reared the bees partially compensated for these effects.
{"title":"Pollen contaminated with a triple-action fungicide induced oxidative stress and reduced longevity though with less impact on lifespan in honey bees from well fed colonies","authors":"Thais R.R. Alves , Matheus F. Trivellato , Tainá A.L. Freitas , Aline Y. Kato , Cássia R.A. Gomes , Yara M.M. Ferraz , Jéssica A. Serafim , David De Jong , Evandro P. Prado , Eduardo F. Vicente , Ricardo O. Orsi , Gener T. Pereira , Camila A. Miranda , Fábio E. Mingatto , Daniel Nicodemo","doi":"10.1016/j.etap.2024.104587","DOIUrl":"10.1016/j.etap.2024.104587","url":null,"abstract":"<div><div>Experiments were conducted to determine the effects of a triple-action fungicide on bees and whether improved nutrition can ameliorate eventual negative impacts. In cage tests, newly-emerged bees from well fed and from nutritionally-restricted honey bee colonies were fed for five days with pollen from sunflowers that had been sprayed or not with a commercial fungicide containing bixafen, prothioconazole and trifloxystrobin. Bees from well-fed colonies were significantly larger and consumed more uncontaminated pollen. They also exhibited increased glutathione peroxidase activity and higher concentrations of pyridine nucleotides, both of which are involved in antioxidase defense. However, pollen contaminated with fungicide led to an increase in lipoperoxidation, regardless of nutritional status. Bee longevity was reduced by both fungicide contamination of the pollen diet and poor nutritional condition. The fungicide adversely affected bees fed with contaminated pollen, though nutritional supplementation of the bee colonies that reared the bees partially compensated for these effects.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104587"},"PeriodicalIF":4.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-01DOI: 10.1016/j.etap.2024.104585
Kexin Zhang , Li Tian , Qinglin Sun , Jianong Lv , Ruiyang Ding , Yang Yu , Yang Li , Junchao Duan
Ambient fine particulate matter (PM2.5) is a significant contributor to air pollution. PM2.5 exposure poses a substantial hazard to public health. In recent years, the adverse effects of maternal PM2.5 exposure on fetal health have gradually gained public attention. As the largest organ in the body, the liver has many metabolic and secretory functions. Liver development, as well as factors that interfere with its growth and function, are of concern. This review utilized the adverse outcome pathway (AOP) framework as the analytical approach to demonstrate the link between maternal PM2.5 exposure and potential neonatal liver injury from the molecular to the population level. The excessive generation of reactive oxygen species (ROS), subsequent endoplasmic reticulum (ER) stress, and oxidative stress were regarded as the essential components in this framework, as they could trigger adverse developmental outcomes in the offspring through DNA damage, autophagy dysfunction, mitochondrial injury, and other pathways. To the best of our knowledge, this is the first article based on an AOP framework that elaborates on the influence of maternal exposure to PM2.5 on liver injury occurrence and adverse effects on liver development in offspring. Therefore, this review offered mechanistic insights into the developmental toxicity of PM2.5 in the liver, which provided a valuable basis for future studies and prevention strategies.
{"title":"Constructing an adverse outcome pathway framework for the impact of maternal exposure to PM2.5 on liver development and injury in offspring","authors":"Kexin Zhang , Li Tian , Qinglin Sun , Jianong Lv , Ruiyang Ding , Yang Yu , Yang Li , Junchao Duan","doi":"10.1016/j.etap.2024.104585","DOIUrl":"10.1016/j.etap.2024.104585","url":null,"abstract":"<div><div>Ambient fine particulate matter (PM<sub>2.5</sub>) is a significant contributor to air pollution. PM<sub>2.5</sub> exposure poses a substantial hazard to public health. In recent years, the adverse effects of maternal PM<sub>2.5</sub> exposure on fetal health have gradually gained public attention. As the largest organ in the body, the liver has many metabolic and secretory functions. Liver development, as well as factors that interfere with its growth and function, are of concern. This review utilized the adverse outcome pathway (AOP) framework as the analytical approach to demonstrate the link between maternal PM<sub>2.5</sub> exposure and potential neonatal liver injury from the molecular to the population level. The excessive generation of reactive oxygen species (ROS), subsequent endoplasmic reticulum (ER) stress, and oxidative stress were regarded as the essential components in this framework, as they could trigger adverse developmental outcomes in the offspring through DNA damage, autophagy dysfunction, mitochondrial injury, and other pathways. To the best of our knowledge, this is the first article based on an AOP framework that elaborates on the influence of maternal exposure to PM<sub>2.5</sub> on liver injury occurrence and adverse effects on liver development in offspring. Therefore, this review offered mechanistic insights into the developmental toxicity of PM<sub>2.5</sub> in the liver, which provided a valuable basis for future studies and prevention strategies.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104585"},"PeriodicalIF":4.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142570729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-10-31DOI: 10.1016/j.etap.2024.104584
Pradeep Kumkar , Chandani R. Verma , Sachin M. Gosavi , Martin Lexa , Sanjay S. Kharat , Radek Rinn , Lukáš Kalous
The global production of plastics has surged to 368 million tonnes annually, leading to significant plastic waste accumulation, projected to reach 12,000 Mt by 2050, impacting aquatic ecosystems. Fish, crucial for their protein and nutrients, are particularly vulnerable to microplastic (MP) ingestion. As a major aquaculture producer and fish consumer, India faces rising plastic pollution in freshwater, which disrupts fish health and growth, posing a significant threat to the sustainability and productivity of aquaculture systems and potential health risks. This study focuses on Mozambique tilapia (Oreochromis mossambicus), valued for its widespread aquaculture use, rapid growth, and nutritional benefits. Our research reveals significant MP contamination (69.23 %) in Mozambique tilapia, with over 80 % from the Ulhas River and 60 % from the Bhima River contaminated and females showing higher susceptibility. These findings emphasise the need for further research on MP impacts on human health and the development of mitigation strategies.
{"title":"Microplastic contamination in the aquaculture icon Oreochromis mossambicus: Prevalence, characteristics, and comprehensive overview","authors":"Pradeep Kumkar , Chandani R. Verma , Sachin M. Gosavi , Martin Lexa , Sanjay S. Kharat , Radek Rinn , Lukáš Kalous","doi":"10.1016/j.etap.2024.104584","DOIUrl":"10.1016/j.etap.2024.104584","url":null,"abstract":"<div><div>The global production of plastics has surged to 368 million tonnes annually, leading to significant plastic waste accumulation, projected to reach 12,000 Mt by 2050, impacting aquatic ecosystems. Fish, crucial for their protein and nutrients, are particularly vulnerable to microplastic (MP) ingestion. As a major aquaculture producer and fish consumer, India faces rising plastic pollution in freshwater, which disrupts fish health and growth, posing a significant threat to the sustainability and productivity of aquaculture systems and potential health risks. This study focuses on Mozambique tilapia (<em>Oreochromis mossambicus</em>), valued for its widespread aquaculture use, rapid growth, and nutritional benefits. Our research reveals significant MP contamination (69.23 %) in Mozambique tilapia, with over 80 % from the Ulhas River and 60 % from the Bhima River contaminated and females showing higher susceptibility. These findings emphasise the need for further research on MP impacts on human health and the development of mitigation strategies.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104584"},"PeriodicalIF":4.2,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-10-30DOI: 10.1016/j.etap.2024.104583
Farjana Haque , Evana Akhtar , Bikash Chandra Chanda , Anjuman Ara , Md.Ahsanul Haq , Protim Sarker , Maria Kippler , Yukiko Wagatsuma , Ondine S. von Ehrenstein , Rubhana Raqib
Chronic arsenic exposure is known to affect the immune system. We aimed to evaluate the association between arsenic exposure and immune cell profile in 15 years old adolescents (n=389) in rural Bangladesh, with chronic exposure to groundwater arsenic. Single blood and urine were collected. Urinary arsenic (U-As) concentration was measured using atomic absorption spectrometry. Peripheral blood mononuclear cells (PBMC) were analyzed by flow cytometry. Non-linear association was found between U-As (median, 24.9 µg/L) and immune cells with a cut-off at U-As 20 µg/L. U-As (<20 µg/L) were significantly associated with increases in CD8+T (21 %), naïve CD8+T (42 %) and early B cells (40 %), and classical monocytes (55 %), but reduction in CD3+T cells (37%) and intermediate-monocytes (56 %). U-As (>20 µg/L) were associated with a 3 % reduction in memory B cells. Arsenic exposure was associated with altered immune cell profile in adolescents likely rendering them vulnerable to adverse health effects in later life.
{"title":"Association of chronic arsenic exposure with cellular immune profile in MINIMat adolescents: A birth cohort in Bangladesh","authors":"Farjana Haque , Evana Akhtar , Bikash Chandra Chanda , Anjuman Ara , Md.Ahsanul Haq , Protim Sarker , Maria Kippler , Yukiko Wagatsuma , Ondine S. von Ehrenstein , Rubhana Raqib","doi":"10.1016/j.etap.2024.104583","DOIUrl":"10.1016/j.etap.2024.104583","url":null,"abstract":"<div><div>Chronic arsenic exposure is known to affect the immune system. We aimed to evaluate the association between arsenic exposure and immune cell profile in 15 years old adolescents (n=389) in rural Bangladesh, with chronic exposure to groundwater arsenic. Single blood and urine were collected. Urinary arsenic (U-As) concentration was measured using atomic absorption spectrometry. Peripheral blood mononuclear cells (PBMC) were analyzed by flow cytometry. Non-linear association was found between U-As (median, 24.9 µg/L) and immune cells with a cut-off at U-As 20 µg/L. U-As (<20 µg/L) were significantly associated with increases in CD8<sup>+</sup>T (21 %), na<sup>ï</sup>ve CD8<sup>+</sup>T (42 %) and early B cells (40 %), and classical monocytes (55 %), but reduction in CD3<sup>+</sup>T cells (37<sup>%</sup>) and intermediate-monocytes (56 %). U-As (>20 µg/L) were associated with a 3 % reduction in memory B cells. Arsenic exposure was associated with altered immune cell profile in adolescents likely rendering them vulnerable to adverse health effects in later life.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104583"},"PeriodicalIF":4.2,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-10-29DOI: 10.1016/j.etap.2024.104582
Alessandra La Pietra, Anna Rita Bianchi, Teresa Capriello, Teresa Mobilio, Annamaria Guagliardi, Anna De Maio, Ida Ferrandino
The structure of the zebrafish retina appears to be very similar to that of mammals, that is why it is used as a model for studying the eye. Indeed, the zebrafish retina can regenerate itself through mechanisms of Müller cell reprogramming. In this research, adult zebrafish were exposed to aluminum to cause damage in the retina and thus evaluate the regenerative capacity of the damaged tissue. Histological and histochemical analyses assessed the retinal structure and the neurodegenerative process, respectively. An expression analysis of PARPs was carried out to verify whether a potential oxidative DNA damage happens. In addition, some genes involved in the regeneration process (pax6a, pax2a, ngn1, and notch1a) were analyzed. The data confirmed the toxicity of aluminum which caused retinal neurodegeneration, but also highlighted the ability of zebrafish to regenerate the retinal structure, repairing the damage and confirming its use as a good model for translational studies.
斑马鱼视网膜的结构与哺乳动物非常相似,因此被用作研究眼睛的模型。事实上,斑马鱼视网膜可以通过Müller细胞重编程机制实现自我再生。在这项研究中,成年斑马鱼暴露于铝中,导致视网膜受损,从而评估受损组织的再生能力。组织学和组织化学分析分别评估了视网膜结构和神经退行性过程。对 PARPs 的表达进行了分析,以验证是否发生了潜在的 DNA 氧化损伤。此外,还分析了一些参与再生过程的基因(pax6a、pax2a、ngn1 和 notch1a)。这些数据证实了铝的毒性会导致视网膜神经变性,但同时也强调了斑马鱼再生视网膜结构、修复损伤的能力,并证实其可作为转化研究的良好模型。
{"title":"Regeneration of zebrafish retina following toxic injury","authors":"Alessandra La Pietra, Anna Rita Bianchi, Teresa Capriello, Teresa Mobilio, Annamaria Guagliardi, Anna De Maio, Ida Ferrandino","doi":"10.1016/j.etap.2024.104582","DOIUrl":"10.1016/j.etap.2024.104582","url":null,"abstract":"<div><div>The structure of the zebrafish retina appears to be very similar to that of mammals, that is why it is used as a model for studying the eye. Indeed, the zebrafish retina can regenerate itself through mechanisms of Müller cell reprogramming. In this research, adult zebrafish were exposed to aluminum to cause damage in the retina and thus evaluate the regenerative capacity of the damaged tissue. Histological and histochemical analyses assessed the retinal structure and the neurodegenerative process, respectively. An expression analysis of PARPs was carried out to verify whether a potential oxidative DNA damage happens. In addition, some genes involved in the regeneration process (<em>pax6a</em>, <em>pax2a</em>, <em>ngn1</em>, and <em>notch1a</em>) were analyzed. The data confirmed the toxicity of aluminum which caused retinal neurodegeneration, but also highlighted the ability of zebrafish to regenerate the retinal structure, repairing the damage and confirming its use as a good model for translational studies.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104582"},"PeriodicalIF":4.2,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-10-28DOI: 10.1016/j.etap.2024.104580
Silvia Secco , Marta Cunha , Giovanni Libralato , Marco Trifuoggi , Antonella Giarra , Amadeu M.V.M. Soares , Rosa Freitas , Massimiliano Scalici
Gadolinium (Gd), commonly used in contrast agents for medical imaging, has been detected in hospital wastewater and aquatic environments, raising environmental concerns. This study examined the accumulation and cellular impacts of Gd in the clam species Donax trunculus, commonly used as bioindicator of contamination. Gadolinium accumulation in clams increased with exposure and over time. Biological responses varied with Gd levels: low concentrations (10 and 50 µg/L) led to low metabolic activity and glycogen content, but high antioxidant activities and lipid peroxidation levels (LPO); high concentrations (250 and 500 µg/L) resulted in increased metabolic activity, while antioxidant enzyme activity was inhibited and LPO levels were the lowest. Metabolic activity decreased after two weeks, suggesting limited long-term metabolic resilience. The study underscores D. trunculus as an effective early warning species for Gd pollution and highlights the ecological risks of rising Gd levels, emphasizing the need for environmental monitoring and regulation.
{"title":"Evaluating the impact of gadolinium contamination on the marine bivalve Donax trunculus: Implications for environmental health","authors":"Silvia Secco , Marta Cunha , Giovanni Libralato , Marco Trifuoggi , Antonella Giarra , Amadeu M.V.M. Soares , Rosa Freitas , Massimiliano Scalici","doi":"10.1016/j.etap.2024.104580","DOIUrl":"10.1016/j.etap.2024.104580","url":null,"abstract":"<div><div>Gadolinium (Gd), commonly used in contrast agents for medical imaging, has been detected in hospital wastewater and aquatic environments, raising environmental concerns. This study examined the accumulation and cellular impacts of Gd in the clam species <em>Donax trunculus</em>, commonly used as bioindicator of contamination. Gadolinium accumulation in clams increased with exposure and over time. Biological responses varied with Gd levels: low concentrations (10 and 50 µg/L) led to low metabolic activity and glycogen content, but high antioxidant activities and lipid peroxidation levels (LPO); high concentrations (250 and 500 µg/L) resulted in increased metabolic activity, while antioxidant enzyme activity was inhibited and LPO levels were the lowest. Metabolic activity decreased after two weeks, suggesting limited long-term metabolic resilience. The study underscores <em>D. trunculus</em> as an effective early warning species for Gd pollution and highlights the ecological risks of rising Gd levels, emphasizing the need for environmental monitoring and regulation.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104580"},"PeriodicalIF":4.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142570731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-10-24DOI: 10.1016/j.etap.2024.104581
Hee Byung Koh, Jae Ho Chung, Sung Jin Moon
The cumulative toxicity of volatile organic compounds (VOCs) cause many medical diseases. We analyzed the evidence of association between VOCs and risk of metabolic syndrome in the Korean population using 1771 participants from the 2023 National Health and Nutrition Examination Survey. The creatinine-corrected urinary concentrations of BMA, 2-MHA, PGA, SPMA, 3-HPMA, BPMA and DHBMA were higher in the metabolic syndrome group than in the non-metabolic syndrome group. Urine N-Acetyl-S-(phenyl)-L-cysteine (SPMA) levels were significantly associated with metabolic syndrome after adjusting for confounders (odds ratio: 1.71). 2-MHA (OR 1.29, P=0.035) and SPMA (OR 2.84, P<0.001) were associated with the risk of elevated FBG impairment and SPMA (OR 1.57) was positively connected with the high blood pressure (P=0.016). In conclusion, the findings indicated significant association between the metabolic syndrome and a number of VOCs. Among them, there was a substantial positive correlation between the urinary SPMA levels and metabolic syndrome.
{"title":"Association of volatile organic compound exposure and metabolic syndrome","authors":"Hee Byung Koh, Jae Ho Chung, Sung Jin Moon","doi":"10.1016/j.etap.2024.104581","DOIUrl":"10.1016/j.etap.2024.104581","url":null,"abstract":"<div><div>The cumulative toxicity of volatile organic compounds (VOCs) cause many medical diseases. We analyzed the evidence of association between VOCs and risk of metabolic syndrome in the Korean population using 1771 participants from the 2023 National Health and Nutrition Examination Survey. The creatinine-corrected urinary concentrations of BMA, 2-MHA, PGA, SPMA, 3-HPMA, BPMA and DHBMA were higher in the metabolic syndrome group than in the non-metabolic syndrome group. Urine N-Acetyl-S-(phenyl)-L-cysteine (SPMA) levels were significantly associated with metabolic syndrome after adjusting for confounders (odds ratio: 1.71). 2-MHA (OR 1.29, P=0.035) and SPMA (OR 2.84, P<0.001) were associated with the risk of elevated FBG impairment and SPMA (OR 1.57) was positively connected with the high blood pressure (P=0.016). In conclusion, the findings indicated significant association between the metabolic syndrome and a number of VOCs. Among them, there was a substantial positive correlation between the urinary SPMA levels and metabolic syndrome.</div></div>","PeriodicalId":11775,"journal":{"name":"Environmental toxicology and pharmacology","volume":"112 ","pages":"Article 104581"},"PeriodicalIF":4.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142515231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}