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Effects of tritium pollution on photosynthesis, respiration and redox of microalgae under rising temperature.
Sci Total Environ
January 2025
College of Life Science, Northeast Forestry University, No. 26, Hexing Road, Harbin 150040, China. Electronic address:
Article Synopsis
- * Findings indicate that elevated temperatures combined with tritium exposure lead to cell damage, reduced photosynthetic efficiency, and disruptions in key metabolic pathways, exacerbating genetic damage in the algae.
- * The research highlights the importance of re-evaluating potential ecological risks linked to low-level tritium waste discharge in the context of global warming and rising sea temperatures.
The effects of corticotropin-releasing factor (CRF) and urocortins on the noradrenaline (NA) released from the locus coeruleus (LC).
Peptides
December 2024
Department of Pathophysiology, Faculty of Medicine, University of Szeged, Hungary.
Corticotropin-releasing factor (CRF) activates the hypothalamic-pituitary-adrenal (HPA) axis and stimulates the noradrenergic neurotransmission, both processes being implicated in the pathogenesis of anxiety and depression, but the intimate site and mechanism of interaction of CRF and CRF-related peptides, named urocortins (UCN1, UCN2, UCN3), with noradrenaline (NA) was not fully elucidated yet. Therefore, the aim of the present study was to investigate the actions of CRF and urocortins on the NA released from the rat locus coeruleus (LC), the primary source of NA in the brain, and the participation of CRF receptors (CRF1 and CRF2) in these actions. In order to do so, male Wistar rats were used, their LC were isolated and dissected, and the LC slices were incubated with tritium-labelled NA, superfused and stimulated electrically.
View Article and Find Full Text PDFEvaluating radionuclide mobility in groundwater recharge areas of fractured natural barrier systems using multiple isotopes and microbial indicators.
J Hazard Mater
January 2025
School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:
The distribution of uranium (U) concentrations, which reached up to 322 µg/L, was found to correlate with the pattern of fractures within the natural barrier system (NBS). Analysis of the vertical distribution of dissolved oxygen (DO), dissolved organic carbon (DOC), tritium (H), microbial communities, and HO and SO isotopes revealed insights into oxic water infiltration within the heterogeneous fractured system. Their distribution showed that the average infiltration depth at the KURT site is 200 m, while in external areas with a high frequency of fractures, oxic conditions extended down to 495 m.
View Article and Find Full Text PDFSkin absorption of metals derived from hydrogenated stainless particles in human skin: Results from the TITANS project.
Environ Pollut
January 2025
Department of Chemistry and Pharmaceutical Sciences, University of Trieste, Trieste, Italy.
Workers involved in the decommissioning and removal of radioactive material from nuclear power plants can come into contact with tritiated dust from stainless steel. This study aimed to investigate metal penetration and permeation after skin contamination with these particles. Static diffusion Franz cells were used with intact, damaged, or broken human skin.
View Article and Find Full Text PDFA Brief Review of Radiolabelling Nucleic Acid-Based Molecules for Tracking and Monitoring.
J Labelled Comp Radiopharm
November 2024
Department of Life Sciences, University of Bath, Bath, UK.
The rise of nucleic acid-based therapeutics continues apace. At the same time, the need for radiolabelled oligonucleotides for determination of spatial distribution is increasing. Complex molecular structures with mostly multiple charges and low solubility in organic solvents increase the challenge of integrating radionuclides.
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