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Ital J Anat Embryol

Title:		Effects of estrous cycle and xenoestrogens expositions on mice nitric oxide producing system
Author(s):		Gotti S; Martini M; Viglietti-Panzica C; Miceli D; Panzica G;
Address:		"Laboratory of Neuroendocrinology, Department of Anatomy, Pharmacology, and Forensic Medicine, University of Turin, Italy"
Journal Title:		Ital J Anat Embryol
Year:		2010
Volume:		115
Issue:		1-Feb
Page Number:		103 - 108
DOI:
ISSN/ISBN:		1122-6714 (Print) 1122-6714 (Linking)
Abstract:		"Nitric oxide (NO)-containing neurons are widely distributed within the central nervous system, including regions involved in the control of reproduction and sexual behavior. Nitrergic neurons may co-localize with gonadal hormone receptors and gonadal hormones may influence neuronal NO synthase expression in adulthood as well as during development. In rodents, the female, in physiological conditions, is exposed to short-term changes of gonadal hormones levels (estrous cycle). Our studies, performed in mouse hypothalamic and limbic systems, reveal that the expression of neuronal NO synthase may vary according to the rapid variations of hormonal levels that take place during the estrous cycle. This is in accordance with the hypothesis that gonadal hormone activation of NO-cGMP pathway is important for mating behavior. NO-producing system appears particularly sensitive to alterations of endocrine balance during development, as demonstrated by our experiments utilizing perinatal exposure to bisphenol A, an endocrine disrupting chemical. In fact, significant effects were detected in adulthood in the medial preoptic nucleus and in the ventromedial subdivision of the bed nucleus of the stria terminalis. Therefore, alteration of the neuronal NO synthase expression may be one of the causes of the important behavioral alterations observed in bisphenol-exposed animals"
Keywords:		"Animals Behavior, Animal/drug effects/*physiology Benzhydryl Compounds Endocrine Disruptors/metabolism/*toxicity Estrogens, Non-Steroidal/metabolism/toxicity Estrous Cycle/drug effects/*physiology Female Hypothalamus/drug effects/enzymology/*metabolism Ma;"
Notes:		"MedlineGotti, Stefano Martini, Mariangela Viglietti-Panzica, Carla Miceli, Desiree Panzica, GianCarlo eng Research Support, Non-U.S. Gov't Review Italy 2010/11/16 Ital J Anat Embryol. 2010; 115(1-2):103-8"