The ever-increasing presence of pharmaceutical drugs in the environment is a motif of concern, and human-use drugs are of particular importance. This is the case of paracetamol, a widely employed drug in human therapeutics, as analgesic and antipyretic, whose toxicity on aquatic organisms is still not fully characterized. The present study aimed to assess the toxic deleterious effects of paracetamol on European eel, Anguila anguilla, by using a comprehensive battery of antioxidant biomarkers (activities of enzymes such as catalase (CAT) and glutathione S-transferases (GSTs)), and the quantification of oxidative damage (measurement of levels of lipid peroxidation (thiobarbituric acid reactive substances (TBARS) assay)). Other biochemical effects elicited by this substance were also quantified, in terms of anaerobic respiration (activity of lactate dehydrogenase, LDH) and neurotoxicity (acetylcholinesterase, AChE, activity). The obtained results showed the occurrence of an oxidative base response, and paracetamol also seemed to inhibit AChE, showing that this drug can also elicit neurotoxicity. The lack of response by both CAT and LDH show that, despite the occurrence of toxicity, eels have detoxification mechanisms that are effective to cope with paracetamol, preventing additional deleterious alterations, including in the main pathway by which they obtain energy.
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http://dx.doi.org/10.1007/s11356-015-4329-6 | DOI Listing |
J Plant Physiol
January 2025
Department of Ecology, Faculty of Sciences, University of Málaga, Málaga, Spain.
Cold-temperate and Arctic hard bottom coastal ecosystems are dominated by kelp forests, which have a high biomass production and provide important ecosystem services, but are subject to change due to ocean warming. However, the photophysiological response to increasing temperature of ecologically relevant species, such as Laminaria digitata, might depend on the local thermal environment where the population has developed. Therefore, the effects of temperature on growth rate, biochemical composition, maximum quantum yield, photosynthetic quotient and carbon budget of young cultured sporophytes of Laminaria digitata from the Arctic at Spitsbergen (SPT; cultured at 4, 10 and 16 °C) and from the cold-temperate North Sea island of Helgoland (HLG; cultured at 10, 16 and 22 °C) were comparatively analyzed.
View Article and Find Full Text PDFAnnu Rev Biomed Eng
January 2025
1Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA; email:
Biochemical signals in native tissue microenvironments instruct cell behavior during many biological processes ranging from developmental morphogenesis and tissue regeneration to tumor metastasis and disease progression. The detection and characterization of these signals using spatial and highly resolved quantitative methods have revealed their existence as matricellular proteins in the matrisome, some of which are bound to the extracellular matrix while others are freely diffusing. Including these biochemical signals in engineered biomaterials can impart enhanced functionality and native-like complexity, ultimately benefiting efforts to understand, model, and treat various diseases.
View Article and Find Full Text PDFACS Nano
January 2025
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China.
Metal ions are indispensable to life, as they can serve as essential enzyme cofactors to drive fundamental biochemical reactions, yet paradoxically, excess is highly toxic. Higher-order cells have evolved functionally distinct organelles that separate and coordinate sophisticated biochemical processes to maintain cellular homeostasis upon metal ion stimuli. Here, we uncover the remodeling of subcellular architecture and organellar interactome in yeast initiated by several metal ion stimulations, relying on near-native three-dimensional imaging, cryo-soft X-ray tomography.
View Article and Find Full Text PDFAnn Rheum Dis
January 2025
Department of Surgery, University of Cambridge, Cambridge, UK.
Objectives: To facilitate the stratification of patients with osteoarthritis (OA) for new treatment development and clinical trial recruitment, we created an automated machine learning (autoML) tool predicting the rapid progression of knee OA over a 2-year period.
Methods: We developed autoML models integrating clinical, biochemical, X-ray and MRI data. Using two data sets within the OA Initiative-the Foundation for the National Institutes of Health OA Biomarker Consortium for training and hold-out validation, and the Pivotal Osteoarthritis Initiative MRI Analyses study for external validation-we employed two distinct definitions of clinical outcomes: Multiclass (categorising OA progression into pain and/or radiographic) and binary.
Mol Divers
January 2025
Department of Urology Surgery, The Second Affiliated Hospital of Guilin Medical University, Guilin, 541199, Guangxi, China.
Cystitis glandularis (CG) is a chronic hyperplastic disorder of the bladder, and the available clinical drug therapy is insufficient currently. Glycyrrhetinic acid (GA), a bioactive compound extracted from the roots of Glycyrrhiza glabra, is found with beneficial actions, including anti-inflammatory and anti-oxidative effects. We previously reported that GA relieves CG symptoms in animal model, implying the potential application of GA to treat CG.
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