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Source: Chemosphere
Nutrition: Fish
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Total 467 results found since Jan 2013.
Ecotoxicological assessment of water phase exfoliated two-dimensional Group-VI transition metal dichalcogenides using zebrafish embryo model
Chemosphere. 2023 Sep 15:140167. doi: 10.1016/j.chemosphere.2023.140167. Online ahead of print.ABSTRACTAmong emerging layered materials, 2D transition metal dichalcogenides (TMDs) nanosheets (n-sheets) have received increasing attention for optoelectronics, energy storage, and, recently, for bioremediation and advanced biomedical applications; however, a lack of ecotoxicological in vivo studies is evident. Herein, for the first time, the potential nanotoxicity of liquid phase exfoliated Group VI TMDs n-sheets (MoS2, WS2, WSe2, and MoSe2) was comparatively investigated using zebrafish embryos (Z-EBs) as an in-vivo model. Th...
Source: Chemosphere - September 17, 2023 Category: Chemistry Authors: Carmine Merola Annalisa Scroccarello Flavio Della Pelle Giovanni Ferraro Giulia Caioni Monia Perugini Michele Amorena Dario Compagnone Source Type: research
Health impact assessment after Danio rerio long-term exposure to environmentally relevant concentrations of metformin and guanylurea
Chemosphere. 2023 Sep 7:140070. doi: 10.1016/j.chemosphere.2023.140070. Online ahead of print.ABSTRACTThe antidiabetic drug metformin (MET) and its metabolite guanylurea (GUA) have been frequently and ubiquitously detected in surface water. Consequently, there has been a consistent rise in studying the toxicity of MET and GUA in fish over the past decade. Nonetheless, it is noteworthy that no study has assessed the harmful effects both compounds might trigger on fish blood and organs after chronic exposure. Taking into consideration the data above, our research strived to accomplish two primary objectives: Firstly, to asse...
Source: Chemosphere - September 9, 2023 Category: Chemistry Authors: Gustavo Axel Elizalde-Vel ázquez Selene Elizabeth Herrera-V ázquez Leobardo Manuel G ómez-Oliván Sandra Garc ía-Medina Source Type: research
Body distribution and ecotoxicological effect of nanoplastics in freshwater fish, Zacco platypus
This study investigated the organ accumulation and toxic effects of 50 nm polystyrene nanoplastics (PS-NPs) in Zacco platypus (Z. platypus; also known as pale chub fish) using pyrolyzer-gas chromatography-mass spectrometry (Pyr-GC/MS). PS-NPs accumulated in Z. platypus' brain, digestive tract, branchia, and liver, causing changes at cellular level. Over a 14-day exposure, the accumulated PS-NPs led to observable changes in fish behavior (e.g., Total traveled distance and maximum velocity). In addition, the oxidative stress in each organ of Z. platypus increased as the exposure concentration of PS-NPs increased. This study ...
Source: Chemosphere - September 8, 2023 Category: Chemistry Authors: Jiwon Choi Yeowool Choi Sang Don Kim Source Type: research
Exploring the impact of PVC and PVA microplastics on zebrafish tissue using multi-spectral imaging, Optical Coherence Tomography (OCT), and biospeckle OCT (bOCT)
This study investigates the effect of Polyvinyl chloride (PVC) and Polyvinyl alcohol (PVA) microplastics in zebrafish by using multi-spectral imaging (MSI), Optical Coherence Tomography (OCT), and Biospeckle OCT (bOCT). These techniques allow for long-term studies in the fish without invasive procedures in real-time. Zebrafish were exposed to Nile red labeled PVC and PVA for 21 days with 500mg/L concentration. Image acquisition and analysis were performed every five days till the end of the study. MSI images revealed deposition of microplastics in the gills region of the fish; some diffused deposition was seen throughout t...
Source: Chemosphere - September 7, 2023 Category: Chemistry Authors: Pooja C Asani Zoya Alam Raju Poddar Source Type: research
Translocation of < sup > 14 < /sup > C-polystyrene nanoplastics into fish during a very-low concentration dietary exposure
This study adapted a method for synthesising semi-stable 14C-PS NPs (through styrene polymerisation) in small volumes for deployment in environmental studies. The method was developed with non-labelled material where the final polystyrene product had a primary particle size of 35 ± 8 nm (as measured by transmission electron microscopy). This method was then applied to 14C-labelled styrene to produce radiolabelled polystyrene nanoplastics (14C-PS NPs). The 14C-PS NPs were added (top-dressed) to a commercially available fish feed, with a measured concentration of 27.9 ± 2.1 kBq kg-1 (n = 5), equating to 5.9 μg polystyrene...
Source: Chemosphere - September 6, 2023 Category: Chemistry Authors: Nathaniel J Clark Astrid C Fischer Lee Durndell Tamara S Galloway Richard C Thompson Source Type: research
Influence of sucralose, acesulfame-k, and their mixture on brain's fish: A study of behavior, oxidative damage, and acetylcholinesterase activity in Daniorerio
Chemosphere. 2023 Aug 23:139928. doi: 10.1016/j.chemosphere.2023.139928. Online ahead of print.ABSTRACTSucralose (SUC) and acesulfame-k (ACE-K) are widely used artificial sweeteners worldwide; however, they are frequently detected in aquatic environments due to their low metabolism and inadequate removal during wastewater treatment. The harmful effects of these compounds on hydrobionts have yet to be fully understood, as data on their toxicity is limited and inconclusive. This research aimed to determine the impact of SUC (50, 75, 125 μg/L) and ACE-K (50, 75, 125 μg/L), individually and in combination, on fish's swimming...
Source: Chemosphere - August 25, 2023 Category: Chemistry Authors: Karla Col ín-García Gustavo Axel Elizalde-Vel ázquez Leobardo Manuel G ómez-Oliván Sandra Garc ía-Medina Source Type: research
Acute and subchronic effects of ibuprofen on the ten spotted live-bearer fish Cnesterodon decemmaculatus (Jenyns, 1842)
Chemosphere. 2023 Aug 19:139895. doi: 10.1016/j.chemosphere.2023.139895. Online ahead of print.ABSTRACTIbuprofen (IBP) is an anti-inflammatory drug found in aquatic environments, potentially toxic for the biota. We exposed the test fish C. decemmaculatus to two environmentally relevant concentrations (50 and 100 μg IBP/L) for 4 and 12 d and evaluated the effect on some biomarkers. Micronucleus test, nuclear abnormality test and comet assay indicated cyto-genotoxicity at both concentrations and exposure periods. Oxidative stress and biochemical biomarkers were not affected, excepting muscle AChE activity for 4 d. Muscle me...
Source: Chemosphere - August 21, 2023 Category: Chemistry Authors: L B Campos N úñez Aa González M J Palacio J P Ferro P M Casta ñé L Ferrari N A Ossana Source Type: research
Reproductive toxicity induced by lead exposure: Effects on gametogenesis and sex steroid signaling in teleost fish
In this study, we determined whether Pb exposure affects gametogenesis, sex steroids, estrogen (ERα and ERβ), and androgen (AR) receptors. Adult specimens of Astyanax bimaculatus were exposed in duplicate to 15, 50, and 100 μg/L of lead acetate, whereas the control group was not exposed. After 28 days of exposure, fish were euthanized and samples of the gonads, liver, and blood were collected for analysis. The results indicated a reduction in the gonadosomatic index as well as the diameters of the vitellogenic follicles and seminiferous tubules in the exposed groups. Morphometry of gametogenesis revealed inhibition of t...
Source: Chemosphere - August 21, 2023 Category: Chemistry Authors: Camila Stephanie Ferreira Yves Moreira Ribeiro Davidson Peruci Moreira Alessandro Loureiro Paschoalini Nilo Bazzoli Elizete Rizzo Source Type: research
Impacts of exposure to nanopolystyrene and/or chrysene at ambient concentrations on neurotoxicity in Siniperca chuatsi
Chemosphere. 2023 Aug 17:139830. doi: 10.1016/j.chemosphere.2023.139830. Online ahead of print.ABSTRACTHealth risks caused by widespread environmental pollutants such as nanopolystyrene (NP) and chrysene (CHR) in aquatic ecosystems have aroused considerable concern. The present study established juvenile Mandarin fish (Siniperca chuatsi) models of NP and/or CHR exposure at ambient concentrations for 21 days to systematically investigate the underlying neurotoxicity mechanisms. The results showed that single and combined exposure to NP and CHR not only reduced the density of small neuronal cells in the grey matter layer of ...
Source: Chemosphere - August 19, 2023 Category: Chemistry Authors: Tiantian Chen Hewei Jiang Yawei Shen Tingwen Cui Zonglin Yang Yufei Liu Jinliang Zhao Xiaowu Chen Source Type: research
Dopaminergic and serotoninergic neurotoxicity of lanthanide phosphate (TbPO < sub > 4 < /sub > ) in developing zebrafish
This study elucidates putative mechanisms and exposure risks to wildlife and humans by characterizing phosphatic REE-induced neurotoxicity in developing zebrafish.PMID:37597622 | DOI:10.1016/j.chemosphere.2023.139861
Source: Chemosphere - August 19, 2023 Category: Chemistry Authors: Siying Chen Xiaohong Wang Xiaolin Ye Yingju Qin Haiqing Wang Zhenda Liang Lishan Zhu Li Zhou Christopher J Martyniuk Bing Yan Source Type: research
