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Auteur Mengjing Wu |
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Titre : Ovarian toxicity of e-cigarette liquids : effects of components and high and low nicotine concentration e-cigarette liquid in vitro Type de document : document électronique Auteurs : Tairen Chain, Auteur ; Mengjing Wu, Auteur ; Yuting Dong, Auteur Editeur : Héraklion [Grèce] : EU European Publishing Année de publication : 2023 Collection : Tobacco Induced Diseases num. 128 Importance : 8 p. Présentation : graph., ill. Langues : Anglais (eng) Catégories : [DIVERS] personne:par sexe:femme
[TABAC] CANDIDATS:e-cigarette
[TABAC] chimie du tabac:constituant:additif:agent de saveur
[TABAC] chimie du tabac:constituant:alcaloïde:nicotineMots-clés : e-liquide, expérimentation animale Index. décimale : TA 1.1.1 Cigarettes (« normales », électroniques, aromatisées,…) Résumé : INTRODUCTION
Electronic cigarette use has become increasingly popular, with potential consequences for reproductive health. We aimed to investigate the effects of different components of e-liquid on the ovary and compare the impact of low nicotine concentration e-liquids (LN e-liquids) and high nicotine concentration e-liquids (HN e-liquids) on ovarian toxicity.
METHODS
A total of 378 rat ovaries were divided into seven groups, including control (no intervention), nicotine (0.05 mg/mL), flavoring (0.25 μL/mL), propylene glycol (PG) (2.5 μL/mL), vegetable glycerin (VG) (2.0 μL/mL), LN e-liquid (0.05 mg nicotine + 0.25 μL flavoring + 2.5 μL PG + 2.0 μL VG + 0.25 μL distilled water/mL medium) and HN e-liquid groups (0.05 mg nicotine + 0.05 μL flavoring + 0.5 μL PG + 0.4 μL VG + 0.05 μL distilled water/mL medium). After three hours of in vitro culture, ovarian morphology, oxidation levels [superoxide dismutase
(SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and malondialdehyde (MDA)], and apoptosis levels [factor related apoptosis (Fas), Cyt-c, Caspase-9, Caspase-3] were analyzed.
RESULTS
Our findings indicate that nicotine has limited impact on the ovary, while flavoring, PG, and VG all cause ovarian damage including morphological damage, disruption of oxidative balance and promotion of apoptosis, with VG having the most significant effect. Moreover, LN e-liquids may lead to more severe ovarian damage than HN e-liquids at an equal intake of total nicotine.
CONCLUSIONS
ur study highlights that in e-liquid formula, nicotine has a limited effect on the ovaries, but flavoring, PG, and VG all cause damage to the ovaries, with VG the most damaging. At a consistent level of total nicotine intake, e-liquids with low nicotine concentrations cause more damage to the ovaries than those with high nicotine concentrations. These findings contribute to a better understanding of the impact of e-liquids on ovarian health and have important implications for public health policy.En ligne : https://doi.org/10.18332/tid/170631 Format de la ressource électronique : Article en ligne Permalink : https://biblio.fares.be/opac_css/index.php?lvl=notice_display&id=10279 Aucun avis, veuillez vous identifier pour ajouter le vôtre !