Gonadal steroid regulation of presynaptic elements in the magnocellular division of the medial preoptic nucleus in the Syrian hamster (Mesocricetus auratus)
نویسندگان
چکیده
..........................................................................................1 CHAPTER I: INTRODUCTION....................................................................3 CHAPTER II: Steroidal Regulation of synaptic density in the magnocellular division of the medial preoptic nucleus (MPN mag) of the Syrian Hamster..............................19 Introduction..................................................................................20 Methods.......................................................................................22 Results........................................................................................26 Discussion...................................................................................27 CHAPTER III: Sexual dimorphisms and steroidal regulation of presynaptic inputs from the medial amygdala innervating the magnocellular division of the medial preoptic nucleus (MPN mag) of the Syrian Hamster (Mesocricetus auratus)..........................34
منابع مشابه
Vasopressin (V1a) receptor binding, mRNA expression and transcriptional regulation by androgen in the Syrian hamster brain.
Arginine vasopressin plays an important role in the regulation of social behaviours in rodents. In the Syrian hamster, vasopressin injected directly into the brain stimulates scent marking and aggressive behaviour in a steroid dependent manner and is therefore a useful model for investigating steroid-peptide-behaviour interactions. In this study, we used in situ hybridization and radioligand bi...
متن کاملMating activates androgen receptor-containing neurons in chemosensory pathways of the male Syrian hamster brain.
Fos-immunoreactivity is induced during mating in the male Syrian hamster in limbic areas that relay chemosensory information and contain receptors for gonadal steroid hormones. The induction of Fos is an index of neuronal activation. After mating, c-fos expression is greatest in subnuclei of the medial amygdaloid nucleus (Me), bed nucleus of the stria terminalis (BNST), and medial preoptic area...
متن کاملAndrogen and estrogen concentrating neurons in chemosensory pathways of the male Syrian hamster brain.
The medial preoptic area (MPOA), bed nucleus of the stria terminalis (BNST), and medial amygdaloid nucleus (Me) are essential for male sexual behavior in the Syrian hamster. These nuclei received chemosensory stimuli and gonadal steroid signals, both of which are required for mating behavior. The objective of this study was to compare the distribution of androgen- and estrogen-concentrating neu...
متن کاملEffects of gonadal steroids during pubertal development on androgen and estrogen receptor-alpha immunoreactivity in the hypothalamus and amygdala.
Perinatal development is often viewed as the major window of time for organization of steroid-sensitive neural circuits by steroid hormones. Behavioral and neuroendocrine responses to steroids are dramatically different before and after puberty, suggesting that puberty is another window of time during which gonadal steroids affect neural development. In the present study, we investigated whethe...
متن کاملMating-induced expression of c-fos in the male Syrian hamster brain: role of experience, pheromones, and ejaculations.
This study was designed to investigate the effects of pheromonal cues and specific behaviors within the male copulatory sequence on c-fos expression in the medial nucleus of the amygdala (Me), the bed nucleus of the stria terminalis (BNST), and the medial preoptic area (MPOA) of the Syrian hamster brain. Sexually experienced male hamsters were placed into clean testing arenas and were either: 1...
متن کامل