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Toxicogenomics of Five Cytostatics in Fathead Minnow (Pimephales promelas) Larvae
In this study, the toxicogenomic effects of five cytostatics (tamoxifen, methotrexate, capecitabine, cyclophosphamide, and ifosfamide) on fathead minnow (Pimephales promelas) larvae were evaluated. Post-fertilization eggs were exposed to increasing concentrations of the drugs for six days. The expression levels of two genetic biomarkers for toxicity and four thyroid hormone-related gene pathways were measured. Interestingly, the results showed that all concentrations of the five cytostatics affect the transcription levels of both toxicity biomarker genes. Additionally, the thyroid hormone-related genes had different expres...
Source: Bulletin of Environmental Contamination and Toxicology - April 21, 2024 Category: Environmental Health Authors: D C Casta ñeda-Cortés M Lefebvre-Raine G Triffault-Bouchet V S Langlois Source Type: research

The Impact of Inoculation of Two Strains of Rhizobacteria on Radionuclide Transfer in Sesbania Grandiflora
This study highlights the importance of using Phytoremediation by PGPR strains for radionuclides-contaminated soils. Therefore, this method is a promising technique for the restoration and rehabilitation of contaminated sites with radionuclides, as it is low cost, easy to apply, and environmentally friendly.PMID:38643315 | DOI:10.1007/s00128-024-03889-8 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2024 Category: Environmental Health Authors: M S Al-Masri M I E Arabi A Al-Daoude A Adam Y Amin A Shoaib H Khalily Y Al-Khateeb I Khalil W Al-Masri M Rajeh Source Type: research

Magnetic Poly(Amidoamine) Dendrimer for the Dispersive Solid Phase Extraction of Nitrophenols from Environmental Water Samples
Bull Environ Contam Toxicol. 2024 Apr 16;112(4):64. doi: 10.1007/s00128-024-03890-1.ABSTRACTA fast and simple dispersive solid phase extraction method is described for nitrophenols determination in water samples by using gas chromatography-nitrogen phosphorous detector. Firstly, the Poly(amidoamine) grafted Fe3O4 magnetic nanoparticles were synthesized in different generations by successive addition of butyl acrylate and ethylenediamine. After characterization, the prepared dendrimer was utilized as an adsorbent for magnetic solid phase extraction of 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol to benefit large number o...
Source: Bulletin of Environmental Contamination and Toxicology - April 15, 2024 Category: Environmental Health Authors: Hadi Ghanbarnejad Vanik Ghoulipour Faezeh Khalilian Source Type: research

Description of Solvent-Extractable Chemicals in Thermal Receipts and Toxicological Assessment of Bisphenol S and Diphenyl Sulfone
Bull Environ Contam Toxicol. 2024 Apr 14;112(4):63. doi: 10.1007/s00128-024-03871-4.ABSTRACTResearch on thermal receipts has previously focused on the toxic effects of dermal exposure from the most publicized developers (e.g., bisphenol A (BPA) and bisphenol S (BPS)), while no studies have reported on the other solvent-extractable compounds therein. Diphenyl sulfone (DPS) is a sensitizer added to thermal receipts, but little is known about DPS concentrations in receipts or potential toxicity. Here, we quantified BPA, BPS, and DPS concentrations and tentatively identified the solvent-extractable compounds of thermal receipt...
Source: Bulletin of Environmental Contamination and Toxicology - April 14, 2024 Category: Environmental Health Authors: Tasnia Sharin Lucas J Leinen David Schreiber Vaille A Swenson Sarah A Emsley E Jamie Trammell Patrick Videau Doug Crump Michael O Gaylor Source Type: research

Photochemical Degradation of the New Nicotine Pesticide Acetamiprid in Water
The objective of this study was to understand the photolysis pattern of acetamiprid in the water column and elucidate its degradation products and mechanism. It was observed that acetamiprid exhibited different photolysis rates under different light source conditions in pure water, with ultraviolet > fluorescence > sunlight; furthermore, its photolysis half-life ranged from 17.3 to 28.6 h. In addition, alkaline conditions (pH 9.0) accelerated its photolysis rate, which increased with pH. Using gas chromatography-mass spectrometry, five direct photolysis products generated during the exposure of acetamiprid to pure wa...
Source: Bulletin of Environmental Contamination and Toxicology - April 14, 2024 Category: Environmental Health Authors: Huimin Zhu Xinqi Zhang Changjian Li Xueru Li Jinyuan Wu Source Type: research

Temporal and Spatial Comparison of Mercury Bioaccumulation in the Lower Trophic Levels of a Post-glacial Lake Food Web
Bull Environ Contam Toxicol. 2024 Apr 11;112(4):61. doi: 10.1007/s00128-024-03870-5.ABSTRACTTotal mercury (Hg) concentrations and carbon (δ13C) and nitrogen (δ15N) stable isotopes were quantified among aquatic invertebrate and sediment samples collected from Keuka Lake in New York's Finger Lakes region to evaluate temporal and spatial variability in Hg bioaccumulation and trophic ecology among these lower trophic levels. Hg concentrations ranged from 6.3 to 158.8 ng/g (dry wt) across dreissenid mussel, zooplankton, and juvenile (< 10 mm) and adult (≥ 10 mm) mysid shrimp (Mysis diluviana) samples. Hg concentrations w...
Source: Bulletin of Environmental Contamination and Toxicology - April 11, 2024 Category: Environmental Health Authors: Brian C Reeves Caitlin C Slife Gordon Paterson Source Type: research

Coastal Mussel (Mytilus spp.) Soft Tissues as Bioindicators of Methylmercury: Exploring the Relationship Between Condition Index and Methylmercury Concentrations
Bull Environ Contam Toxicol. 2024 Apr 11;112(4):60. doi: 10.1007/s00128-024-03888-9.ABSTRACTWe investigated total mercury (THg) and methylmercury (MeHg) concentrations in coastal mussels (Mytilus spp.) sampled from the Minas Basin, Bay of Fundy and evaluated the relationship with condition index (CI). THg concentrations were low in sediment (mean THg = 5.15 ± 2.11 ng/g dw; n = 6) and soft tissues (mean THg = 62.3 ± 13.7 ng/g; mean MeHg = 13.2 ± 6.3 ng/g; n = 57). The THg in tissues had no significant relationship with CI (Rs= -0.205, p = 0.126). MeHg in tissues were significantly and negatively correlated with condition...
Source: Bulletin of Environmental Contamination and Toxicology - April 11, 2024 Category: Environmental Health Authors: Josie Rogers Molly A Bradford Nelson J O'Driscoll Source Type: research

DNA Damage in Bat Blood Leukocytes Using a Chromatin Dispersion Test (CDT): Biomarker of Environmental Genotoxicity
Bull Environ Contam Toxicol. 2024 Apr 11;112(4):59. doi: 10.1007/s00128-024-03885-y.ABSTRACTEnvironmental pollutants produce adverse effects on organisms and ecosystems. Biomonitoring and biomarkers offer a reasonable approach to make these assessments. Induced genetic changes can be using as a biomarker in organisms that react to a given compound in the ecosystem. Monitoring environmental genotoxicity necessitates the choice of model animals known as "sentinels or biological monitors" and the suitability of validated tests for DNA damage evaluation. We aimed to estimate the DNA damage produced by thermal stress in the leu...
Source: Bulletin of Environmental Contamination and Toxicology - April 11, 2024 Category: Environmental Health Authors: Elva I Cort és-Gutiérrez Juan P Ceyca-Contreras Emma P G ómez-Ruiz Evelyn Rios Catalina Garc ía-Vielma Juan A Garc ía-Salas Source Type: research