0000000000245446
AUTHOR
Mireille Folia
Xenohormones and oral homeostasis : impact on taste preferences and salivary glands
Oral homeostasis strongly influences taste perceptions. It depends on a healthy oral epithelium and salivary gland secretions, which are both regulated by sex hormones. The aim of this thesis was to identify the effect of an oral exposure to Bisphenol A, a food packaging and dental sealer component, and of a soy-diet containing phytoestrogens on oral homeostasisTwo experiments were conducted in adult rats: a dose-response study of BPA (5μg 12.5 mg / kj / day), and a study about the impact of a soy-diet on the BPA disrupting effects. By using gustation choice tests, and histological and qPCR-TR molecular approach, we identify for the first time an action of BPA on dry mouth. We found that BP…
Are taste preferences related to submandibular endocrine or exocrine secretions? A rodent study
National audience
Impact of aldehyde dehydrogenases and aldo-keto reductases on human olfactory peri-receptor events
International audience
Oral homeostasis disruption by medical plasticizer component bisphenol A in adult male rats.
Objectives/Hypothesis Bisphenol A (BPA) is a synthetic estrogen-like chemical mimetic widely used in the manufacture of polycarbonate plastics and epoxy resins found in numerous consumer products including food packaging, medical devices, and dental sealants. Because it is recovered in fluids and it can reach high levels in saliva, this study aimed to evaluate its safety on oral homeostasis by examining its effects on salivary glands, mouth epithelium, water consumption, and salt preference, each parameter being estrogen sensitive. Study Design Randomized controlled trial involving rats. Methods A dose-response study was conducted in adult Wistar rats randomized into five groups (n = 12). B…
Low doses in vivo studies of dietary endocrine disruptor mixtures: Sexual dimorphism relevance of biological target for a trans-generational study in a rodent model
Low doses in vivo studies of dietary endocrine disruptor mixtures: Sexual dimorphism relevance of biological target for a trans-generational study in a rodent model. 1. international toxicology of mixtures conference
Bisphenol A from drinking water affects taste preferences and oral homeostasis in male rat
National audience
Effects of oral Bisphenol A exposure on sweet preference and on submandibular salivary gland structure in male adult rat
La Revue de Gériatrie; Objectifs: Le Bisphénol A (BPA) est un œstrogéno-mimétique qui entre dans la fabrication de plastiques en polycarbonate et de résines époxy destinés entre autres à l'élaboration d'emballages alimentaires, de matériel médical et d'amalgames dentaires. Pouvant atteindre des taux élevés dans la salive, l'objectif de cette étude était de vérifier l'innocuité du BPA au niveau buccal en recherchant les effets sur les préférences gustatives et sur les glandes saliuaires, deux paramètres sensibles aux œstrogènes. Matériels et Méthodes: Une étude effet-dose a été réalisée sur des rats Wistar adultes répartis en 5 groupes (n=12). Le Bisphénol A a été administré pendant 6 semain…
Risk factors for Coronavirus Disease 2019 (COVID-19) severity and mortality among solid cancer patients and impact of the disease on anticancer treatment: A French nationwide cohort study (GCO-002 CACOVID-19).
Background Cancer patients are thought to have an increased risk of developing severe Coronavirus Disease 2019 (COVID-19) infection and of dying from the disease. In this work, predictive factors for COVID-19 severity and mortality in cancer patients were investigated. Patients and Methods In this large nationwide retro-prospective cohort study, we collected data on patients with solid tumours and COVID-19 diagnosed between March 1 and June 11, 2020. The primary endpoint was all-cause mortality and COVID-19 severity, defined as admission to an intensive care unit (ICU) and/or mechanical ventilation and/or death, was one of the secondary endpoints. Results From April 4 to June 11, 2020, 1289…
Effets d’une exposition orale en Bisphenol A sur la préférence au salé et la structure de la glande sous-mandibulaire chez le rat mâle adulte
Effets d’une exposition orale en Bisphenol A sur la préférence au salé et la structure de la glande sous-mandibulaire chez le rat mâle adulte. Colloque PNR-PE
A multi-generational study on low-dose BPA exposure in Wistar rats: Effects on maternal behavior, flavor intake and development
Bisphenol A (BPA) is a common endocrine disruptor found as an environmental and food contaminant. It exerts both developmental and behavioral effects, mainly when exposure occurs in early life. The aim of this study was to determine the multi-generational effects of chronic, human-relevant low-dose exposure to BPA on development, maternal behavior and flavor preference in Wistar rats. BPA was orally administered at a daily dose of 5 mu g/kg body weight to FO pregnant dams from the first day of gestation (GD 1) until the last day of lactation (LD 21), and then to Fl offspring from weaning (PND 21) to adulthood (PND 100). F2 offspring were not exposed. Development and clinical signs of toxici…
Modification des préférences gustatives et de la plasticité structurale des glandes salivaires par une exposition chronique au bisphenol A chez le rat male adulte
Modification des préférences gustatives et de la plasticité structurale des glandes salivaires par une exposition chronique au bisphenol A chez le rat male adulte. colloque de la SFORL
Perturbateurs endocriniens : effet sur les préférences gustatives et l'obésité
International audience; Plusieurs études relient l’évolution de l’incidence de l’obésité à une évolution sociétale: l’accès des femmes au travail, les facilités de transport et l’essor de l’industrie agroalimentaire ont généré une "transition nutritionnelle" où le repas mijoté à base de produits frais a fait place au repas vite-prêt et fast-foods. La surconsommation de graisses et sucres et la moindre consommation de fruits et légumes sont bien souvent incriminés. Toutefois, l’usage concomitant de produits chimiques dans la production agricole et la confection de produits raffinés et/ou transformés, pourrait être un facteur aggravant, le taux d’obésité pouvant atteindre 50% en régions pollu…
Are taste preferences related to submandibular endocrine or exocrine secretions? A rodent study
National audience