Effects of biodegradable and conventional microplastics on the intestine, intestinal community composition, and metabolic levels in tilapia (Oreochromis mossambicus)
Aquat Toxicol. 2023 Nov 3;265:106745. doi: 10.1016/j.aquatox.2023.106745. Online ahead of print.ABSTRACTDespite growing interest in conventional microplastics (CMPs) and their toxicological effects on aquatic species, little is known about biodegradable microplastics (BMPs) and their corresponding implications for aquatic life. Here, tilapia (Oreochromis mossambicus) were semi-statically exposed for 14 days to the bio-based plastic polylactic acid (PLA, 100 μg/L, 2.52 ± 0.46 μm) and the petroleum-based plastic polyvinyl chloride (PVC, 100 μg/L, 1.58 ± 0.36 μm). The results showed that ingesting the above two types of...
Source: Aquatic Toxicology - November 9, 2023 Category: Toxicology Authors: Ruiqi Bao Zhiruo Cheng Licheng Peng Tariq Mehmood Liu Gao Shengchi Zhuo Li Wang Yuanyuan Su Source Type: research
Assessing the effects of single and binary exposures of copper and lead on Mytilus galloprovincialis: Physiological and genotoxic approaches
In this study, adult marine mussels (Mytilus galloprovincialis) were exposed to two aqueous concentrations of the essential trace metal, Cu (5 and 32 μg L-1), and the non-essential metal, Pb (5 and 25 μg L-1), both individually and in binary mixtures. After a 14-day exposure, metal accumulation was determined in the digestive gland, gill and mantle tissues by inductively coupled plasma-mass spectrometry following acid digestion, and a number of biochemical, neurotoxic and physiological markers were assessed. These included measurements of DNA damage using comet assay, total glutathione concentration, acetylcholinesterase...
Source: Aquatic Toxicology - November 9, 2023 Category: Toxicology Authors: Charlotte Crowther Andrew Turner Michael N Moore Awadhesh N Jha Source Type: research
Polyacrylonitrile microfibers pose a significant threat to the early-stage survival of zebrafish
This study aimed to investigate MFs' toxic effects and mechanisms on early-stage zebrafish. Zebrafish embryos were exposed to varying concentrations of polyacrylonitrile microfibers (PanMfs) for 7 days. Results revealed PanMfs adhering to the embryos' surface, with higher concentrations accelerating heart rate and causing pericardial edema in post-hatching larvae. Larvae ingested PanMfs, leading to their accumulation in the intestines and increased levels of reactive oxygen species (ROS) and mitochondrial quantity. Notably, lipid metabolism and calcium ion related signaling pathways underwent significant changes. Low conce...
Source: Aquatic Toxicology - November 9, 2023 Category: Toxicology Authors: Yingying Zhang Yinan Jiang Zhu Zhu Xinrui Xu Hui Yang Source Type: research
Effects of biodegradable and conventional microplastics on the intestine, intestinal community composition, and metabolic levels in tilapia (Oreochromis mossambicus)
Aquat Toxicol. 2023 Nov 3;265:106745. doi: 10.1016/j.aquatox.2023.106745. Online ahead of print.ABSTRACTDespite growing interest in conventional microplastics (CMPs) and their toxicological effects on aquatic species, little is known about biodegradable microplastics (BMPs) and their corresponding implications for aquatic life. Here, tilapia (Oreochromis mossambicus) were semi-statically exposed for 14 days to the bio-based plastic polylactic acid (PLA, 100 μg/L, 2.52 ± 0.46 μm) and the petroleum-based plastic polyvinyl chloride (PVC, 100 μg/L, 1.58 ± 0.36 μm). The results showed that ingesting the above two types of...
Source: Aquatic Toxicology - November 9, 2023 Category: Toxicology Authors: Ruiqi Bao Zhiruo Cheng Licheng Peng Tariq Mehmood Liu Gao Shengchi Zhuo Li Wang Yuanyuan Su Source Type: research
Synergistic and additive effects of microplastic, nickel and pyrene on survival, reproduction, and egestion of a tropical copepod
Aquat Toxicol. 2023 Oct 30;265:106737. doi: 10.1016/j.aquatox.2023.106737. Online ahead of print.ABSTRACTCoastal tropical ecosystems provide livelihood for millions of people but are at the same time exposed to an increasing intensity of diverse anthropogenic stressors, including pollution. Nevertheless, the combined effects of pollutants on marine ecosystems are poorly understood, particularly regarding lower trophic levels (plankton) and tropical ocean. We exposed the tropical copepod Centropages velificatus to 4-5 concentrations of a heavy metal (nickel), an oil compound (pyrene) and microplastic (PET), either alone or ...
Source: Aquatic Toxicology - November 8, 2023 Category: Toxicology Authors: Giovanna Albani Delove Asiedu Sika Abrokwah Sigr ún H Jónasdóttir Torkel G Nielsen Emmanuel Acheampong Laura Hern ández Ruiz Bernard Ekumah Marja Koski Source Type: research
Synergistic and additive effects of microplastic, nickel and pyrene on survival, reproduction, and egestion of a tropical copepod
Aquat Toxicol. 2023 Oct 30;265:106737. doi: 10.1016/j.aquatox.2023.106737. Online ahead of print.ABSTRACTCoastal tropical ecosystems provide livelihood for millions of people but are at the same time exposed to an increasing intensity of diverse anthropogenic stressors, including pollution. Nevertheless, the combined effects of pollutants on marine ecosystems are poorly understood, particularly regarding lower trophic levels (plankton) and tropical ocean. We exposed the tropical copepod Centropages velificatus to 4-5 concentrations of a heavy metal (nickel), an oil compound (pyrene) and microplastic (PET), either alone or ...
Source: Aquatic Toxicology - November 8, 2023 Category: Toxicology Authors: Giovanna Albani Delove Asiedu Sika Abrokwah Sigr ún H Jónasdóttir Torkel G Nielsen Emmanuel Acheampong Laura Hern ández Ruiz Bernard Ekumah Marja Koski Source Type: research
Effects of polymethylmethacrylate nanoplastics on the polychaete Hediste diversicolor: Behavioural, regenerative, and biochemical responses
In this study, polychaetes also displayed a lower regenerative capacity when exposed to PMMA NPs. Overall, the data obtained in this study emphasize the potential consequences of PMMA NPs to benthic worms, particularly between 0.5 and 50 µg/L, with polychaetes exposed to 50 µg/L being the most impacted by the analysed NPs. However, since sediments are considered to be sinks and sources of plastics, further studies are needed to better understand the impacts of different sizes and polymers on marine organisms, particularly benthic species.PMID:37931377 | DOI:10.1016/j.aquatox.2023.106743 (Source: Aquatic Toxicology)
Source: Aquatic Toxicology - November 6, 2023 Category: Toxicology Authors: M S S Silva Ad ília Pires A Dick Vethaak Concepci ón Martínez-Gómez M ónica Almeida Ricardo Pinto Etelvina Figueira Miguel Oliveira Source Type: research
Effects of polymethylmethacrylate nanoplastics on the polychaete Hediste diversicolor: Behavioural, regenerative, and biochemical responses
In this study, polychaetes also displayed a lower regenerative capacity when exposed to PMMA NPs. Overall, the data obtained in this study emphasize the potential consequences of PMMA NPs to benthic worms, particularly between 0.5 and 50 µg/L, with polychaetes exposed to 50 µg/L being the most impacted by the analysed NPs. However, since sediments are considered to be sinks and sources of plastics, further studies are needed to better understand the impacts of different sizes and polymers on marine organisms, particularly benthic species.PMID:37931377 | DOI:10.1016/j.aquatox.2023.106743 (Source: Aquatic Toxicology)
Source: Aquatic Toxicology - November 6, 2023 Category: Toxicology Authors: M S S Silva Ad ília Pires A Dick Vethaak Concepci ón Martínez-Gómez M ónica Almeida Ricardo Pinto Etelvina Figueira Miguel Oliveira Source Type: research
Effects of water environmental factors and antibiotics on bacterial community in urban landscape lakes
This study focused on three types of urban landscape lakes in Xi'an that were closely related to human activities. By combining basic water quality indicators, antibiotic occurrence status, bacterial communities and their potential metabolic functions, Spearman correlation coefficient and redundancy analysis were used to explore the relationship between them, and further explore the impact mechanism of environmental factors and antibiotics on bacterial community structure. The results showed that ofloxacin, erythromycin, and roxithromycin were the main types of antibiotics in the three landscape lakes, with low ecological ...
Source: Aquatic Toxicology - November 5, 2023 Category: Toxicology Authors: Yutong Zhang Min Wang Wen Cheng Chen Huang Jiehui Ren Tian Wan Kangyi Gao Source Type: research
Effects of water environmental factors and antibiotics on bacterial community in urban landscape lakes
This study focused on three types of urban landscape lakes in Xi'an that were closely related to human activities. By combining basic water quality indicators, antibiotic occurrence status, bacterial communities and their potential metabolic functions, Spearman correlation coefficient and redundancy analysis were used to explore the relationship between them, and further explore the impact mechanism of environmental factors and antibiotics on bacterial community structure. The results showed that ofloxacin, erythromycin, and roxithromycin were the main types of antibiotics in the three landscape lakes, with low ecological ...
Source: Aquatic Toxicology - November 5, 2023 Category: Toxicology Authors: Yutong Zhang Min Wang Wen Cheng Chen Huang Jiehui Ren Tian Wan Kangyi Gao Source Type: research
Potential role of dietary Boswellia serrata resin against mancozeb fungicide-induced immune-antioxidant suppression, histopathological alterations, and genotoxicity in Nile tilapia, Oreochromis niloticus
This study was established to look into the toxicological consequences of chronic exposure to a fungicide (mancozeb; MAZ) on the immune-antioxidant response, gene expressions, hepato-renal functions, and histological pictures of Nile tilapia (Oreochromis niloticus). Additionally, the effectiveness of Indian frankincense resin extract (IFRE) to mitigate their toxicity was taken into account. Fish (n =240; average body weight: 22.45 ± 2.21 g) were randomized into four groups for eight weeks in six replicates (control, IFRE, MAZ, and IFRE + MAZ), where ten fish were kept per replicate. The control and IFRE groups received ba...
Source: Aquatic Toxicology - November 3, 2023 Category: Toxicology Authors: Afaf N Abdel Rahman Dalia E Altohamy Gehad E Elshopakey Abdelwahab A Abdelwarith Elsayed M Younis Nora M Elseddawy Aya Elgamal Shefaa M Bazeed Tarek Khamis Simon J Davies Rowida E Ibrahim Source Type: research
Eucalyptol alleviates avermectin exposure-induced apoptosis and necroptosis of grass carp hepatocytes by regulating ROS/NLRP3 axis
Aquat Toxicol. 2023 Oct 30;264:106739. doi: 10.1016/j.aquatox.2023.106739. Online ahead of print.ABSTRACTThe wide application of Avermectin (AVM) has caused pollution of surface water and damage to non-target organisms. A growing body of evidence supports the most prominent role of Eucalyptol (EUC) is antioxidation. To the purpose of explore the injury mechanism of Avermectin on grass carp hepatocytes and the antagonistic effect of Eucalyptol, 5.7 μM AVM and/or 20 μM EUC were used to treat grass carp hepatocytes for 24 h to establish hepatocyte exposure model. The results showed that Avermectin exposure significantly inc...
Source: Aquatic Toxicology - November 2, 2023 Category: Toxicology Authors: Kun Wang Huanyi Liu Wenying Sun Jinming Guo Zhihui Jiang Shiwen Xu Zhiying Miao Source Type: research
Eucalyptol alleviates avermectin exposure-induced apoptosis and necroptosis of grass carp hepatocytes by regulating ROS/NLRP3 axis
Aquat Toxicol. 2023 Oct 30;264:106739. doi: 10.1016/j.aquatox.2023.106739. Online ahead of print.ABSTRACTThe wide application of Avermectin (AVM) has caused pollution of surface water and damage to non-target organisms. A growing body of evidence supports the most prominent role of Eucalyptol (EUC) is antioxidation. To the purpose of explore the injury mechanism of Avermectin on grass carp hepatocytes and the antagonistic effect of Eucalyptol, 5.7 μM AVM and/or 20 μM EUC were used to treat grass carp hepatocytes for 24 h to establish hepatocyte exposure model. The results showed that Avermectin exposure significantly inc...
Source: Aquatic Toxicology - November 2, 2023 Category: Toxicology Authors: Kun Wang Huanyi Liu Wenying Sun Jinming Guo Zhihui Jiang Shiwen Xu Zhiying Miao Source Type: research
Eucalyptol alleviates avermectin exposure-induced apoptosis and necroptosis of grass carp hepatocytes by regulating ROS/NLRP3 axis
Aquat Toxicol. 2023 Oct 30;264:106739. doi: 10.1016/j.aquatox.2023.106739. Online ahead of print.ABSTRACTThe wide application of Avermectin (AVM) has caused pollution of surface water and damage to non-target organisms. A growing body of evidence supports the most prominent role of Eucalyptol (EUC) is antioxidation. To the purpose of explore the injury mechanism of Avermectin on grass carp hepatocytes and the antagonistic effect of Eucalyptol, 5.7 μM AVM and/or 20 μM EUC were used to treat grass carp hepatocytes for 24 h to establish hepatocyte exposure model. The results showed that Avermectin exposure significantly inc...
Source: Aquatic Toxicology - November 2, 2023 Category: Toxicology Authors: Kun Wang Huanyi Liu Wenying Sun Jinming Guo Zhihui Jiang Shiwen Xu Zhiying Miao Source Type: research
Characterization of molecular and apical effects of legacy-contaminated groundwater on early life stages of fathead minnows
The objective of this study was to apply a novel transcriptomics tool, EcoToxChips, to characterize the effects of complex mixtures of contaminants in fish and to compare molecular response patterns to higher-level biological responses including swimming behavior, deformities, and mortality. Fathead minnow (FHM) embryos were exposed for seven days to increasing concentrations of groundwater collected from moderate (MIAZ) and high (HIAZ) industrial activity zones of a legacy contaminated site. There was a concentration-dependent disruption of photo-dependent swimming responses associated with avoidance behavior patterns and...
Source: Aquatic Toxicology - November 1, 2023 Category: Toxicology Authors: Laura Gasque-Belz Carly Colville Shakya Kurukulasuriya Steven D Siciliano Natacha Hogan Lynn Weber Patrick Campbell Rachel Peters Mark Hanson Markus Hecker Source Type: research
