Searchable, peer-reviewed, open-access proceedings from bioscience and biomedical conferences

bp0013cpr1 | The Hypothalamic-Pituitary-Ovarian Axis | CPR1989

Hypothalamic control of gonadotrophin and prolactin secretion in pigs

Kraeling R. R. , Barb C. R. ,

Keywords: hypothalamus; gonadotrophin; prolactin; pig; neurocndocrine© 1990 Journals of Reproduction & Fertility Ltd...

bp0015cpr1 | Regulation of Reproductive Function | CPR1997

Role of neuropeptides and amino acids in controlling secretion of hormones from the anterior pituitary gland in pigs

Estienne M. J. , Harter-Dennis M. J. , Barb C. R.

All reproductive processes involve one or more of the protein hormones secreted from the anterior pituitary gland: LH, FSH, prolactin, growth hormone, ACTH and thyroidstimulating hormone (TSH). Primary hormones of reproduction, such as LH and FSH, directly regulate a reproductive activity. For example, LH and FSH stimulate follicular growth and the associated secretion of oestradiol in sows. In contrast, secondary hormones of reproduction such as TSH are permissive and re...

bp0016cpr1 | Development of The Follicleand Corpus Luteum | CPR2001

Nutritional regulators of the hypothalamic–pituitary axis in pigs

Barb C. R. , Kraeling R. R. , Rampacek G. B.

Nutritional signals are detected by the central nervous system (CNS) and translated by the neuroendocrine system into signals that alter secretion of LH and growth hormone (GH). Furthermore, these signals directly affect the activity of the pituitary gland independently of CNS input. Insulin-like growth factor I (IGF-I), insulin, leptin and specific metabolites, such as glucose and free fatty acids (FFA)', are potential signals of the metabolic status to the brain-pituit...

bp0017cpr3 | (1) | CPR2005

Gene expression in the brain-pituitary adipose tissue axis and luteinising hormone secretion during pubertal development in the gilt

Barb C. R. , Hausman G. J. , Rekaya R.

The occurrence of puberty in the female is due to the interplay of central and peripheral mechanisms in which the hypothalamic-pituitary-ovarian axis regulates growth and gonadal function, as well as adipocyte hormone secretion. Hypothalamic GnRH mRNA expression increased at 3.5 months of age and declined by 6 months of age. Concomitant with the age related reduction in the oestrogen negative feedback on LH secretion was a decline in hypothalamic oestrogen receptor-&alph...