Effects of excitatory amino acids on in vivo and in vitro gonadotropin and growth hormone secretion in testosterone-primed immature rainbow trout,Oncorhynchus mykiss

1994 ◽  
Vol 268 (5) ◽  
pp. 390-399 ◽  
Author(s):  
Peter A. Flett ◽  
Glen van der Kraak ◽  
John F. Leatherland
Keyword(s):  
Amino Acids ◽  
Growth Hormone ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Excitatory Amino Acids ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Rainbow Trout Oncorhynchus Mykiss

Role of Excitatory Amino Acids in the Control of Growth Hormone Secretion

Endocrine ◽  
2005 ◽  
Vol 28 (3) ◽  
pp. 295-302 ◽  
Author(s):  
Enrique Aguilar ◽  
Manuel Tena-Sempere ◽  
Leonor Pinilla
Keyword(s):  
Amino Acids ◽  
Growth Hormone ◽  
Excitatory Amino Acids ◽  
Hormone Secretion ◽  
Growth Hormone Secretion

A possible relationship between serum transferrin, growth hormone secretion and height velocity in children

1980 ◽  
Vol 93 (2) ◽  
pp. 134-138 ◽  
Author(s):  
M. Donnadieu ◽  
R. M. Schimpff ◽  
P. Garnier ◽  
J. L. Chaussain ◽  
J. C. Job
Keyword(s):  
Growth Hormone ◽  
Growth Regulation ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Height Velocity ◽  
Obese Children ◽  
Gh Secretion ◽  
Growth Promoting

Abstract. Since transferrin (Tf) in vitro has a growth-promoting activity and is associated with NSILA properties, the aim of this work was to study in vivo the relationships between Tf, somatomedin activity (SM), growth hormone (GH) secretion, and height velocity in children. An iv infusion of ornithine hydrochloride was given to 23 controls; the induced rise of GH was accompanied by a simultaneous fall of SM (r = −0.711, P < 0.001) and was preceded by a fall of Tf (r = −0.610, P < 0.01). In 17 obese children SM was within the normal range, when Tf levels were higher and arginineinduced GH peaks lower than in the controls, and a negative correlation was found between Tf basal levels and GH peaks (r = −0.608, P < 0.01). In 9 children with confirmed hypopituitarism the Tf levels were significantly lower than in the controls. In 14 children with confirmed or suspected hypopituitarism a single im injection of hGH (6 mg) failed to induce Tf variations over 24 h. In 39 of these children the height velocity was significantly correlated with Tf basal levels (r = 0.701, P < 0.001). These data suggest that transferrin is involved in growth regulation, and that GH secretion is related to transferrin levels by a feed-back mechanism.

Glucocorticoid modulation of growth hormone secretion in vitro. Evidence for a biphasic effect on GH-releasing hormone mediated release

1987 ◽  
Vol 114 (4) ◽  
pp. 465-469 ◽  
Author(s):  
Gian Paolo Ceda ◽  
Robert G. Davis ◽  
Andrew R. Hoffman
Keyword(s):  
Growth Hormone ◽  
Prolonged Exposure ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Inhibitory Effect ◽  
Pituitary Cells ◽  
Gh Secretion ◽  
Glucocorticoid Action

Abstract. Glucocorticoids have been shown to have both stimulatory and suppressive effects on GH secretion in vitro and in vivo. In order to study the kinetics of glucocorticoid action on the somatotrope, cultured rat pituitary cells were exposed to dexamethasone for varying periods of time. During short-term incubations (≤ 4 h), dexamethasone inhibited GHRH and forskolin-elicited GH secretion, but during longer incubation periods, the glucocorticoid enhanced both basal and GHRH-stimulated GH release. The inhibitory effect of brief dexamethasone exposure was also seen in cells which previously had been exposed to dexamethasone. In addition, growth hormone secretion from cultured rat and human somatotropinoma cells was inhibited by a brief exposure to dexamethasone. Thus, the nature of glucocorticoid action on the isolated cultured somatotrope is biphasic, with brief exposure inhibiting, and more prolonged exposure stimulating GH secretion.

In vivo and in vitro Effects of Ghrelin/Motilin-Related Peptide on Growth Hormone Secretion in the Rat

2001 ◽  
Vol 73 (1) ◽  
pp. 54-61 ◽  
Author(s):  
Virginie Tolle ◽  
Philippe Zizzari ◽  
Catherine Tomasetto ◽  
Marie-Christine Rio ◽  
Jacques Epelbaum ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Related Peptide ◽  
In Vitro Effects

Rancidity development of refrigerated rainbow trout ( Oncorhynchus mykiss ) fillets: comparative effects of in vivo and in vitro lycopene

2017 ◽  
Vol 98 (2) ◽  
pp. 559-565 ◽  
Author(s):  
Ali Ehsani ◽  
Mohammad Sedigh Jasour ◽  
Naser Agh ◽  
Mohammad Hashemi ◽  
Mahdi Khodadadi
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Rainbow Trout Oncorhynchus Mykiss

In vivo and in vitro liver and gill EROD activity in rainbow trout (Oncorhynchus mykiss) exposed to the beta-blocker propranolol

2011 ◽  
Vol 27 (10) ◽  
pp. 573-582 ◽  
Author(s):  
Abigail E. Bartram ◽  
Matthew J. Winter ◽  
Duane B. Huggett ◽  
Paul McCormack ◽  
Lisa A. Constantine ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Beta Blocker ◽  
Erod Activity ◽  
Rainbow Trout Oncorhynchus Mykiss
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