STEROID HORMONE PRODUCTION FOLLOWING ADRENAL STIMULATION IN THE RHESUS MONKEY

1968 ◽  
Vol 58 (4) ◽  
pp. 637-642
Author(s):  
M. T. Scurry ◽  
J. Bruton

ABSTRACT The adrenal response to the infusion of various corticotrophin (ACTH) preparations and other hormones in the orchiectomized rhesus monkey has been measured by the excretion of 17-hydroxycorticosteroids, 17-ketosteroids, and 11-deoxy-17-ketosteroids. No difference was found in the response to genuine or synthetic ACTH. A response was demonstrated with 0.8 U or more of ACTH per 24 hours. No adrenal response was observed to infusions of various gonadotrophins, growth hormone, prolactin, α-melanocyte stimulating hormone, and thyroid stimulating hormone. Angiotensin selectively stimulated aldosterone excretion. No evidence was found for any selective stimulation of adrenal androgen production.

1983 ◽  
Vol 103 (4) ◽  
pp. 492-496 ◽  
Author(s):  
Ruth C. Powell ◽  
Mark Daniels ◽  
Graham K. Innes ◽  
Michael J. Ashby ◽  
Keith Mashiter

Abstract. We have studied the effects of trifluoperazine, a proposed inhibitor of calmodulin directed cellular function, on adrenocorticotrophic hormone (ACTH), thyroid stimulating hormone (TSH), prolactin (Prl) and growth hormone (GH) secretion from primary cultures of rat adenohypophyseal cells. 5 × 10−6 m and 10−5 m trifluoperazine caused a significant (P < 0.005) reversible dose-related decrease in basal Prl secretion but was less effective on basal GH secretion, significant reversible inhibition (P< 0.005) occurring only with 10−5 m. Trifluoperazine did not consistently alter basal ACTH or TSH secretion but did inhibit 10−2 m theophylline stimulation of ACTH, Prl and GH secretion and 1.5 × 10−7 m TRH stimulation of TSH and Prl secretion. Paradoxically 10−5 m trifluoperazine enhanced theophylline stimulation of TSH secretion. Our results show trifluoperazine to have differential effects on Prl, GH, ACTH and TSH secretion, which are consistent with the known calcium dependence of pituitary hormone secretion and may suggest a role for calmodulin in this process.


2010 ◽  
Vol 56 (2) ◽  
pp. 179-186 ◽  
Author(s):  
N.V. Yaglova ◽  
T.T. Berezov

Activation of toll-like receptors-4 by bacterial lipopolysaccharide downregulates pituitary and thyroid function. Besides decrease of thyroid-stimulating hormone secretion lipopolysaccharide affects secretion in follicular thyroid cells directly. The endotoxin partialy activates and inhibits different phases of follicular thyrocytes' secretion. Lipopolysaccharide enhances thyroglobulin synthesis and exocytosis into follicular lumen and supresses its resorbtion.It results in sharp drop of blood thyroxine concentration without decrease of deiodinases-mediated thiroxine to triiodothyronine conversion. Stimulation of the lipopolysaccharide-pretreated thyroid gland with thyroid-stimulating hormone increases resorbtion of thyroglobulin and thyroid hormone production. Combined stimulation of the thyroid gland increases protein bound thyroxine and triiodothyronine serum concentration unlike only TSH stimulation resulting in increase of free thyroid hormone levels. It also prooves that binding capacity of thyroid hormone serum transport proteins during nonthyroidal illness syndrome remains normal.


Life Sciences ◽  
1998 ◽  
Vol 62 (26) ◽  
pp. 2369-2377 ◽  
Author(s):  
Maria Moreno ◽  
Assunta Lombardi ◽  
Pietro Lombardi ◽  
Fernando Goglia ◽  
Antonia Lanni

2004 ◽  
Vol 60 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Makoto Iitaka ◽  
Nils G. Morgenthaler ◽  
Naoko Momotani ◽  
Atsuo Nagata ◽  
Naofumi Ishikawa ◽  
...  

Author(s):  
Mone Zaidi ◽  
Li Sun ◽  
Peng Liu ◽  
Terry F. Davies ◽  
Maria New ◽  
...  

AbstractPituitary hormones have traditionally been thought to exert specific, but limited function on target tissues. More recently, the discovery of these hormones and their receptors in organs such as the skeleton suggests that pituitary hormones have more ubiquitous functions. Here, we discuss the interaction of growth hormone (GH), follicle stimulating hormone (FSH), thyroid stimulating hormone (TSH), adrenocorticotrophic hormone (ACTH), prolactin, oxytocin and arginine vasopressin (AVP) with bone. The direct skeletal action of pituitary hormones therefore provides new insights and therapeutic opportunities for metabolic bone diseases, prominently osteoporosis.


Sign in / Sign up

Export Citation Format

Share Document