Article ; Online: Reproductive hormones and bone.
2010 Volume 8, Issue 2, Page(s) 60–67
Abstract: Hypothalamic gonadotropin-releasing hormone (GnRH) stimulates secretion of pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which directly regulate ovarian function. Pituitary FSH can modulate osteoclast development, and thereby ...
Abstract | Hypothalamic gonadotropin-releasing hormone (GnRH) stimulates secretion of pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which directly regulate ovarian function. Pituitary FSH can modulate osteoclast development, and thereby influence bone turnover. Pituitary oxytocin and prolactin effects on the skeleton are not merely limited to pregnancy and lactation; oxytocin stimulates osteoblastogenesis and bone formation, whereas prolactin exerts skeletal effects in an age-dependent manner. Cyclic levels of inhibins and estrogen suppress FSH and LH, respectively, and also suppress bone turnover via their suppressive effects on osteoblast and osteoclast differentiation. However, continuous exposure to inhibins or estrogen/androgens is anabolic for the skeleton in intact animals and protects against gonadectomy-induced bone loss. Alterations of one hormone in the hypothalamic-pituitary-gonadal (HPG) axis influence other bone-active hormones in the entire feedback loop in the axis. Thus, we propose that the action of the HPG axis should be extended to include its combined effects on the skeleton, thus creating the HPG skeletal (HPGS) axis. |
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MeSH term(s) | Bone Density/physiology ; Bone Remodeling/physiology ; Bone and Bones/metabolism ; Gonadal Hormones/metabolism ; Humans ; Hypothalamo-Hypophyseal System/metabolism ; Osteoporosis/metabolism ; Pituitary-Adrenal System/metabolism |
Chemical Substances | Gonadal Hormones |
Language | English |
Publishing date | 2010-03-25 |
Publishing country | United States |
Document type | Journal Article ; Review |
ZDB-ID | 2186581-4 |
ISSN | 1544-2241 ; 1544-1873 |
ISSN (online) | 1544-2241 |
ISSN | 1544-1873 |
DOI | 10.1007/s11914-010-0014-3 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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