Hypothalamic histamine, growth rate, plasma prolactin and growth hormone levels in rats with long-term portacaval anastomosis

1999 ◽  
Vol 48 (2) ◽  
pp. 81-85 ◽  
Author(s):  
V. Lozeva ◽  
E. Anttila ◽  
R. K. Tuominen ◽  
M. Hippeläinen ◽  
P. T. Männistö ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Portacaval Anastomosis ◽  
Plasma Prolactin ◽  
Hormone Levels ◽  
Hypothalamic Histamine

Effects of melatonin implantation on cashmere growth, hormone concentrations and cashmere yield in cashmere-perennial-type Liaoning cashmere goats

2017 ◽  
Vol 57 (1) ◽  
pp. 60 ◽  
Author(s):  
Chunhui Duan ◽  
Jianhai Xu ◽  
Yu Zhang ◽  
Wei Zhang ◽  
Yabo Sun ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Fibre Diameter ◽  
Control Group ◽  
Plasma Prolactin ◽  
Blood Samples ◽  
Growing Period ◽  
Plasma Melatonin ◽  
Cashmere Goats ◽  
Slow Growing

The aim of the present study was to investigate the effects of melatonin implants on cashmere growth, the concentrations of plasma melatonin and prolactin and the total cashmere yield in cashmere-perennial-type Liaoning cashmere goats. Twenty female goats were assigned to two treatments (n = 10) including a control and a treatment in which melatonin (2 mg/kg bodyweight) was implanted in March and May, respectively. The experiment lasted for 153 days. Fibre samples were collected in July, August and April the following year (before cashmere harvest). Blood samples were taken monthly from March to August. Cashmere yield was recorded after harvest. In melatonin-treated goats, cashmere length and cashmere growth rate from April to July were significantly increased (P < 0.05), but no influence was observed (P > 0.05) in August. Implantation of melatonin significantly increased plasma melatonin concentrations (P < 0.05) and decreased prolactin concentrations from April to July compared with the control group (P < 0.05), but no difference was observed in August (P > 0.05). Administration of melatonin increased the cashmere yield by 6.2% and the maximum cashmere length by 8.4%, but the differences were not significant (P > 0.05). Moreover, the cashmere fibre diameter was not influenced by melatonin implantation (P > 0.05). The results also indicated that plasma melatonin concentrations were correlated with plasma prolactin in the regulation of cashmere growth. Implantation of melatonin was an effective way to promote cashmere growth, and administration during the cashmere slow-growing period improved cashmere production without changing cashmere fibre diameter in cashmere-perennial-type Liaoning cashmere goats.

Sustained exercise augments long-term starvation increases in plasma growth hormone in the steelhead trout, Salmo gairdneri

1988 ◽  
Vol 66 (4) ◽  
pp. 853-855 ◽  
Author(s):  
Bruce A. Barrett ◽  
Brian A. McKeown
Keyword(s):  
Growth Hormone ◽  
Salmo Gairdneri ◽  
Steelhead Trout ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Hormone Levels ◽  
Significant Difference ◽  
Normal Feeding ◽  
Stored Reserves

During the increased locomotor activity of migration many salmonids do not actively feed and it is likely that metabolic alterations occur to facilitate the mobilization of stored reserves. The present laboratory study was designed to simulate the occurrence of exercise and starvation as natural parameters of migration and to assess the effects of such parameters on levels of plasma growth hormone, which might indicate alterations in metabolism during migration. Juvenile steelhead trout, Salmo gairdneri, were starved for a 30-day period. Starved individuals exhibited a marked increase in plasma growth hormone concentration (38.6 ± 6.7 ng/mL) compared with control individuals held on a normal feeding regime (6.4 ± 1.84 ng/mL). A subgroup of fish from the starved group were exercised by being forced to swim at 1.5 body lengths/s for a 24-h period. Exercised individuals exhibited plasma growth hormone levels in excess of 140 ng/mL. There was no significant difference between the plasma growth hormone levels of unexercised starved fish and exercised fed fish.

Long-term results of growth hormone therapy in children with short stature, subnormal growth rate and normal growth hormone response to secretagogues

1995 ◽  
Vol 42 (4) ◽  
pp. 365-372 ◽  
Author(s):  
Jan-Maarten Wit ◽  
Bart Boersma ◽  
Sabine M. P. F. Muinck Keizer-Schrama ◽  
Henrlët E. Nienhuls ◽  
Wilma Oostdijk ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Hormone Therapy ◽  
Short Stature ◽  
Growth Hormone Therapy ◽  
Normal Growth ◽  
Growth Hormone Response ◽  
Long Term Results ◽  
Hormone Response

Growth, Parr–Smolt Transformation, and Changes in Growth Hormone of Atlantic Salmon (Salmo salar) Reared under Different Photoperiods

1991 ◽  
Vol 48 (11) ◽  
pp. 2100-2108 ◽  
Author(s):  
Sigurd O. Stefansson ◽  
Björn Th. Bjömsson ◽  
Tom Hansen ◽  
Carl Haux ◽  
G. Lasse Taranger ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Continuous Light ◽  
Plasma Growth Hormone ◽  
Hormone Levels ◽  
Light Regimes ◽  
Atlantic Salmon Salmo Salar ◽  
Natural Photoperiod

Potential 1+ smolts of Atlantic salmon (Salmo salar) were reared under three light regimes: simulated natural photoperiod (LDN), continuous light (LD24:0), or a combination of continuous, low-intensity background light and a superimposed simulated natural photoperiod (dual photoperiod, LDD). Growth rate in freshwater was enhanced by LD24:0 and LDD, and changes associated with smoking (increased salinity tolerance, reduced condition coefficient) were advanced under LD24:0. Plasma growth hormone levels were initially high on LD24:0 and LDD whereas on LDN, plasma growth hormone levels increased gradually from February through April. Overall GH levels were negatively correlated with condition coefficient during the final stages of smoking. After 16 mo in seawater, there were no significant size differences among the groups. The incidence of sexual maturation as postsmolts was higher in the LD24:0 and LDD groups whereas the incidence of grilsing was higher in LDN. Results demonstrate the significant influence of photoperiod on growth and smoking in Atlantic salmon. An abrupt increase to continuous light in winter may be sufficient to advance important aspects of the parr–smolt transformation. Dual photoperiod may be a way to combine the increased growth rate observed under continuous light and the normal parr–smolt transformation associated with natural photoperiod.

Effects of Indomethacin and Prostaglandin Injections on Plasma Prolactin and Growth Hormone Levels in Rats*

Endocrinology ◽  
1978 ◽  
Vol 102 (2) ◽  
pp. 531-539 ◽  
Author(s):  
S. R. OJEDA ◽  
H. E. JAMESON ◽  
S. M. MCCANN
Keyword(s):  
Growth Hormone ◽  
Plasma Prolactin ◽  
Hormone Levels

scholarly journals Early postoperative growth hormone levels: high predictive value for long-term outcome after surgery for acromegaly

2000 ◽  
Vol 247 (6) ◽  
pp. 640-650 ◽  
Author(s):  
S. Valdemarsson ◽  
S. Ljunggren ◽  
M. Bramnert ◽  
O. Norrhamn ◽  
C. H. Nordstrom
Keyword(s):  
Growth Hormone ◽  
Predictive Value ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Hormone Levels

SULPHATION FACTOR ACTIVITY AND GROWTH RATE DURING LONG-TERM TREATMENT OF PATIENTS WITH PITUITARY DWARFISM WITH HUMAN GROWTH HORMONE

1972 ◽  
Vol 69 (3) ◽  
pp. 417-433 ◽  
Author(s):  
Kerstin Hall ◽  
Patrick Olin
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Human Growth Hormone ◽  
Human Growth ◽  
Term Treatment ◽  
Factor Activity ◽  
Duration Of Treatment ◽  
Pituitary Dwarfism ◽  
Long Term Treatment

ABSTRACT Twenty patients with pituitary dwarfism were treated for nine months to 2½ years with human growth hormone (HGH) prepared according to Roos et al. (1963). Eleven of them had previously been given other HGH preparations for one to five years. During the first two years of treatment with HGH in a dose of 0.2 mg (0.4 IU) and 0.3 mg (0.6 IU) per kg body weight per week, the increase in growth rate was two- to threefold, and three- to fivefold, respectively. Long-termed treatment with HGH was accompanied by a decreasing ability of the hormone to stimulate growth. Cortisone acetate, in replacement doses, had no influence on this growth rate. During the present study only one of the 20 patients developed antibodies to HGH. The levels of sulphation factor (SF) activity in serum were low before treatment and increased significantly during treatment with HGH. There was a linear relationship between the SF activity in the serum and the slope of the growth carves. Both increased with the dose of HGH administered but decreased with duration of treatment.

Plasma Prolactin and Growth Hormone Levels in Manic Patients Treated with Pimozide

1982 ◽  
Vol 140 (3) ◽  
pp. 274-279 ◽  
Author(s):  
J. C. Cookson ◽  
T. Silverstone ◽  
Lesley Rees
Keyword(s):  
Growth Hormone ◽  
Plasma Prolactin ◽  
Close Correspondence ◽  
Hormone Levels ◽  
Manic Patients

SummaryDuring two weeks' treatment of 11 manic patients with pimozide there was close correspondence between the timecourse of improvement in clinical ratings and the rise in plasma prolactin between the second and fourteenth day. There were no significant differences in growth hormone levels during the manic episodes compared to recovery. These findings are discussed in relation to the role of dopamine in the release of prolactin and growth hormone, and in the pathogenesis of mania.

The effects of partial opiate agonists on plasma prolactin and growth hormone levels in the rat

Life Sciences ◽  
1979 ◽  
Vol 25 (20) ◽  
pp. 1709-1715 ◽  
Author(s):  
E.L. Lien ◽  
A. Morrison ◽  
Wm. Dvonch
Keyword(s):  
Growth Hormone ◽  
Plasma Prolactin ◽  
Hormone Levels
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