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Environmental risk assessment of the surface sediments based on trace elements analysis from the largest freshwater lake in the southern slope of the Himalaya, Nepal.
Environ Monit Assess
December 2024
Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, 44600, Nepal.
Freshwater ecosystems, including high-altitude lakes, can be affected by trace metal pollution derived from a mix of natural sources and anthropogenic activities. These pollutants often collect in surface sediments, with notable concentrations in the deeper areas of lakes. To evaluate the environmental risk associated with metal contaminated sediment in Rara Lake, southern Himalaya, surface sediment samples were systematically collected in November 2018, with a subsequent specific emphasis on determinations of trace element concentrations.
View Article and Find Full Text PDFCrystal structure of -poly[[di-aqua-di-imida-zole-cobalt(II)]-μ-2,3,5,6-tetra-bromo-benzene-1,4-di-carboxyl-ato].
Acta Crystallogr E Crystallogr Commun
October 2024
Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan.
The asymmetric unit of the title compound, [Co(CBrO)(CHN)(HO)] or [Co(Brbdc)(im)(HO)] , comprises half of Co ion, tetra-bromo-benzene-dicarboxylate (Brbdc), imidazole (im) and a water mol-ecule. The Co ion exhibits a six-coordinated octa-hedral geometry with two oxygen atoms of the Brbdc ligand, two oxygen atoms of the water mol-ecules, and two nitro-gen atoms of the im ligands. The carboxyl-ate group is nearly perpendicular to the benzene ring and shows monodentate coordination to the Co ion.
View Article and Find Full Text PDFInvestigation of mono-nuclear cobalt(II) complexes with a tri-dentate quinoxalyl-hydrazone ligand for their potential in biological research and interaction with ct-DNA.
Int J Biol Macromol
December 2024
Department of Chemistry, Faculty of Science, Sohag University, Sohag, -82534, Egypt; Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia. Electronic address:
The condensing reaction of 2-hydroxy-1-naphthaldehyde with quinoxalyl-2-carbohydrazide resulted in synthesizing of a novel derivative of hydrazone quinoxalyl ligand (Hdpq). The bonding behavior between Hdpq and Co(II) ion was investigated in molar ratios of 1: 1 and 2: 1 to produce two different complexes, Codpq and Co(dpq), respectively. Their chemical structure was verified using several spectroscopic approaches.
View Article and Find Full Text PDFCyanide and Cyanogenic Compounds-Toxicity, Molecular Targets, and Therapeutic Agents.
Biomolecules
November 2024
Department of Research, Innlandet Hospital Trust, N-2381 Brumunddal, Norway.
Article Synopsis
- - Cyanide (CN) is a toxic compound that affects mitochondrial function, leading to potential poisoning from both short-term and long-term exposure to various CN compounds.
- - Recent research has improved understanding of how CN interacts with copper and iron in mitochondria, disrupting the electron transport chain and causing toxic effects.
- - Antidotes work by targeting CN's affinity for metal-containing substances, and further studies on its interactions with metalloproteins could enhance treatment methods for CN poisoning.
The relevance of the heme oxygenase system in alleviating diabetes-related hormonal and metabolic disorders.
Biochim Biophys Acta Mol Basis Dis
January 2025
Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Wolynska 35, 60-637 Poznan, Poland. Electronic address:
Heme oxygenase (HO) is an enzyme that catalyzes heme degradation. HO dysfunction is linked to various pathological conditions, including diabetes. Results of animal studies indicate that HO expression and activity are downregulated in experimentally induced diabetes.
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