Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	New insights into the oxidative and cytogenotoxic effects of Tetraglyme on human peripheral blood cells
Δημιουργός/Συγγραφέας:	Charalampous, Nikolina Antonopoulou, Maria [EL] Χασάπης, Χρήστος[EN] Chasapis, Christos Vlastos, Dimitris Dormousoglou, Margarita Dailianis, Stefanos
Ημερομηνία:	2024-09-24
Γλώσσα:	Αγγλικά
ISSN:	00489697
DOI:	10.1016/j.scitotenv.2024.176484
Άλλο:	39322075
Περίληψη:	The present study investigated the oxidative and cytogenotoxic potential of Tetraethylene glycol dimethyl ether (known as Tetraglyme) on healthy human peripheral blood lymphocytes, widely used as an in vitro model for assessing the human health risk posed by different chemical compounds. In a first step, Nuclear Magnetic Resonance (1H NMR) spectroscopy, and Ultra-High Performance Liquid Chromatography-Mass Spectrometry (UHPLC-MS) were employed to estimate Tetraglyme's stability under a wide range of pH values (4-12), and thus to identify potential by-products. Thereafter, isolated lymphocytes were treated with different concentrations of Tetraglyme (0.02-20 mg L-1) for assessing its oxidative (using the DCFH-DA staining), and cytogenotoxic potential (using the trypan blue exclusion test for estimating cell viability, Comet assay, as well as the cytokinesis-block micronucleus assay, with or without the addition of S9 metabolic activation system). According to the results, Tetraglyme remains stable at pH 4, but two additional derivatives (i.e. 1-[2-(2-ethoxyethoxy)ethoxy]-2-methoxyethane [C9H20O4] and 1-ethoxy-2-(2-ethoxyethoxy)ethane (Diethylene glycol diethyl ether) [C8H18O3]) were found in traces, under alkaline conditions (pH ≥7). Moreover, although Tetraglyme (and/or its derivatives) showed negligible alterations of cell viability (>92 %) in all cases, the pronounced ROS formation, DNA damage, cell proliferation arrest, and MN frequencies in challenged cells are indicative of its oxidative and cytogenotoxic potential. The significant alterations of Cytokinesis-Block Proliferation Index (CBPI) and Micronucleus (MN) frequencies in S9 challenged cells give further evidence for the potential involvement of Tetraglyme's metabolites in the observed cytogenotoxic mode of action. Although not conclusive, the present findings give rise to further research, utilizing different cell types and biological models, for elucidating Tetraglyme's toxic mode of action, as well as its environmental and human risk.
Τίτλος πηγής δημοσίευσης:	The Science of the total environment
Τόμος/Κεφάλαιο:	954
Θεματική Κατηγορία:	[EL] Τοξικολογία[EN] Toxicology. Poisons [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Βιοχημεία[EN] Biochemistry [EL] Κυτταρολογία[EN] Cytology
Λέξεις-Κλειδιά:	Cytogenotoxicity Lymphocytes Oxidative stress S9 metabolic activation system Tetraglyme
Κάτοχος πνευματικών δικαιωμάτων:	© 2024 Elsevier B.V.
Όροι και προϋποθέσεις δικαιωμάτων:	All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1016/j.scitotenv.2024.176484
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο