title: Sex and stress steroids in adolescence: Gonadal regulation of the hypothalamic-pituitary-adrenal axis in the rat.
abstract: This review provides an overview of the current understanding of the role of the hypothalamic-pituitary-gonadal (HPG) axis in regulating the hypothalamic-pituitary-adrenal (HPA) axis response to stressors. HPA function is influenced by both organizational (programming) and activational effects of gonadal hormones. Typically, in adult rats, estradiol increases and androgens decrease the HPA response to stressors, thereby contributing to sex differences in HPA function, and sensitivity of the HPA axis to gonadal steroids is in part determined by exposure to these hormones in early development. Although developmental differences in HPA function are well characterized, the extent to which gonadal steroids contribute to age differences in HPA function is not well understood. Deficits in the understanding of the relationships between the HPA and HPG axes are greatest for the adolescent period of development. The critical outstanding questions are, when do gonadal hormones begin to regulate HPA function in adolescence, and what mechanisms precipitate change in sensitivity of the HPA axis to the HPG axis at this stage of life.
authors: Department of Psychology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada.
authors: Matthew R
authors: MR
authors: Green
authors: Department of Psychology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada; Centre for Neuroscience, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada. Electronic address: cmccormick@brocku.ca.
authors: Cheryl M
authors: CM
authors: McCormick
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D005260:Female; D012739:Gonadal Steroid Hormones / Q000502:physiology*; D006066:Gonads / Q000187:drug effects*; D006801:Humans; D007030:Hypothalamo-Hypophyseal System / Q000187:drug effects*; D008297:Male; D051381:Rats; D012727:Sex Characteristics
chemical_list: D012739:Gonadal Steroid Hormones
keywords: Corticosterone; Development; Estradiol; Glucocorticoids; Puberty; Stress response; Testosterone