Search results for "HORMONES"
showing 10 items of 1169 documents
Arginine Vasopressin Enhances Sympathetic Constriction Through the V1 Vasopressin Receptor in Human Saphenous Vein
1998
Background—Arginine vasopressin (AVP) not only acts directly on blood vessels through V1 receptor stimulation but also may modulate adrenergic-mediated responses in animal experiments in vivo and in vitro. The aim of the present study was to investigate whether AVP can contribute to an abnormal adrenergic constrictor response of human saphenous veins. Methods and Results—Saphenous vein rings were obtained from 32 patients undergoing coronary artery bypass surgery. The vein rings were suspended in organ bath chambers for isometric recording of tension. AVP (331029 mol/L) enhanced the contractions elicited by electrical field stimulation at 1, 2, and 4 Hz (by 80%, 70%, and 60%, respectively) …
Exposition continue aux xéno-hormones à faibles doses chez le rat : effets multi-générationnels de mélanges sur les préférences gustatives, le compor…
2012
During the last decade, the issue of health-related endocrine disruptors (ED) has been extended to the toxicity of mixtures. The objective of this study was to define the effects of lifelong exposure to ED mixtures, at low doses defined as "non-harmful" by the authorities. In this aim, the effects of mixtures combining genistein, vinclozolin and bisphenol A, have been investigated in the rat by using an integrative and multi-generational experimental approach which takes into account maternal behavior, feeding behavior and development. Our results show that these mixtures could: a) reduce maternal behavior, b) change taste preferences (sweet, salty), c) affect the development from the in ut…
Collective excitations of 3He clusters
1991
Collective excitations of3He clusters are studied by treating the cluster as a quantum liquid drop. We have used the Random-Phase Approximation sum rules technique within a Density Functional Formalism. Results forL=2 to 10 surface modes and theL=0 volume mode are presented.
État des lieux des résistances aux herbicides en France : grandes cultures
2015
En grandes cultures, la résistance aux herbicides a d’abord concerné des inhibiteurs du photosystème 2 (triazines, groupe C), désormais interdites, ce qui a résolu le problème, puis les inhibiteurs de l’ACCase (anti-graminées : « dimes », « fops », « den ») dans les années 1990-2000. Depuis le milieu des années 2000, la résistance touche aussi les « sulfos », un terme trop restrictif qui désigne en fait les 4 familles chimiques d’inhibiteurs de l’ALS (groupe B). Cet exposé commencera par un rappel sur la classification des herbicides en fonction de leur mode d’action (groupes HRAC). Les cas publiés de résistance en France seront décrits : Ø Résistances installées : Groupes A et/ou B : Vulpi…
Enamel defects reflect perinatal exposure to bisphenol A
2013
Enamel defects reflect perinatal exposure to bisphenol A. Congrès de l’Association pour la recherche en Toxicologie (ARET)
Endocrine disruptors target collagen type 2 maturation in chondrocytes in vitro – CIME project
2012
Endocrine disruptors target collagen type 2 maturation in chondrocytes in vitro – CIME project. Colloque PNR-PE
Bisphenol A, genistein and vinclozolin: three endocrine disruptors which differentially affect the mammary gland development in rats
2013
Bisphenol A, genistein and vinclozolin: three endocrine disruptors which differentially affect the mammary gland development in rats. 7. Copenhaguen workshop on endocrine disruptors (human environment, lifestyle, and genes in endocrine disruptors)
Bisphenol A, genistein and vinclozolin: three endocrine disruptors which differentially affect the mammary gland in rats : critical window of exposure
2012
Bisphenol A, genistein and vinclozolin: three endocrine disruptors which differentially affect the mammary gland in rats : critical window of exposure. Colloque PNR-PE
Effects of genistein, vinclozolin and BPA on the proliferation and differentiation of a human salivary cell line – CIME project
2012
Effects of genistein, vinclozolin and BPA on the proliferation and differentiation of a human salivary cell line – CIME project. Colloque PNR-PE
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
2012
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