Increases in Plasma Growth Hormone Concentration and Naso-Anal Length in Rats Following Isolation of the Medial Basal Hypothalamus

1973 ◽  
Vol 12 (3) ◽  
pp. 161-173 ◽  
Author(s):  
J.A. Mitchell ◽  
M. Hutchins ◽  
W.J. Schindler ◽  
V. Critchlow
Keyword(s):  
Growth Hormone ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Medial Basal Hypothalamus ◽  
Growth Hormone Concentration

scholarly journals Plasma growth hormone concentration in corticosteroid-treated children

1968 ◽  
Vol 47 (3) ◽  
pp. 427-435 ◽  
Author(s):  
Helen G. Morris ◽  
Jacqueline R. Jorgensen ◽  
Shirley A. Jenkins
Keyword(s):  
Growth Hormone ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Growth Hormone Concentration

Metabolic and endocrine responses of pregnant and lactating ewes to intravenous glucose or insulin

1989 ◽  
Vol 113 (2) ◽  
pp. 173-182 ◽  
Author(s):  
J. M. Bassett
Keyword(s):  
Growth Hormone ◽  
Insulin Action ◽  
Plasma Concentrations ◽  
Growth Hormone Secretion ◽  
Late Pregnancy ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Intravenous Glucose ◽  
Growth Hormone Concentration ◽  
Glucose Injection

SUMMARYTo investigate whether late pregnancy results in increased resistance to insulin action in ewes, a group of 18 crossbred ewes (six with twin foetuses) were given intravenous injections of glucose (0·25 g/kg) and insulin (0·25 U/kg) about 18days before full term and again during lactation, about 36 days after delivery. Before the injections, basal plasma concentrations of glucose, free fatty acids and growth hormone were lower during pregnancy than during lactation, but insulin concentrations were similar on the two occasions and cortisol concentrations were higher during pregnancy.Rates of glucose removal and insulin secretory responses to the glucose injection were similar on the two occasions, both in ewes with single lambs and in those with twins. Insulin injection also resulted in similar decreases in glucose concentration on the two occasions in all ewes. Recovery from hypoglycaemia was somewhat delayed during pregnancy whencompared with lactation, but less so than in wether sheep given a similar injection of insulin. The plasma free fatty acid concentration decreased more slowly after glucose injection during pregnancy than in lactation. Responses of plasma cortisol concentration toinsulin-induced hypoglycaemia were similar on the 2 days, but plasma growth hormone concentration increased far more in lactating ewes after both injections.The results did not indicate increased antagonism to insulin action in ewes during late pregnancy, but did show that changes in the counter-regulatory hormones after the disturbances to glucose homeostasis may differ markedly in the two situations and suggest that hyper-responsiveness of the system regulating growth hormone secretion contributes to the increased plasma growth hormone concentration observed in lactating animals.

Acute Effect of Amino Acid Ingestion and Resistance Exercise on Plasma Growth Hormone Concentration in Young Men

1997 ◽  
Vol 7 (1) ◽  
pp. 48-60 ◽  
Author(s):  
Richard R. Suminski ◽  
Robert J. Robertson ◽  
Fredric L. Goss ◽  
Silva Arslanian ◽  
Jie Kang ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Amino Acid ◽  
Resistance Exercise ◽  
Young Men ◽  
Acute Effect ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Growth Hormone Concentration

EFFECT OF LIMB ISCHAEMIA AND SCALDING ON THE CONCENTRATIONS OF GROWTH HORMONE AND CORTICOSTERONE IN RAT PLASMA

1977 ◽  
Vol 73 (2) ◽  
pp. 347-353 ◽  
Author(s):  
R. N. BARTON
Keyword(s):  
Growth Hormone ◽  
Plasma Corticosterone ◽  
Rat Plasma ◽  
Limb Ischaemia ◽  
Hormone Concentration ◽  
Plasma Growth Hormone ◽  
Corticosterone Concentration ◽  
Growth Hormone Concentration ◽  
Wide Range ◽  
The Difference

SUMMARY In post-absorptive rats in a 20 °C environment, bilateral hind-limb ischaemia decreased the plasma growth hormone concentration below the very wide range found in control rats. Injection of sodium pentobarbitone increased the concentration in both control and injured rats but did not eliminate the difference between them. A 20% dorsal scald also decreased the variability of plasma growth hormone concentration but did not reduce it below the normal range. Thus growth hormone is probably not responsible for the insulin resistance seen in the severely injured rat. The plasma corticosterone concentration markedly increased after both injuries but was not altered by pentobarbitone.

THE DIURNAL PATTERN OF PLASMA GROWTH HORMONE CONCENTRATION IN CHILDREN AND ADOLESCENTS

1966 ◽  
Vol 34 (2) ◽  
pp. 147-153 ◽  
Author(s):  
W. M. HUNTER ◽  
W. M. RIGAL
Keyword(s):  
Growth Hormone ◽  
Children And Adolescents ◽  
Hormone Concentration ◽  
Diurnal Pattern ◽  
Plasma Growth Hormone ◽  
Blood Samples ◽  
Hormone Levels ◽  
Growth Hormone Concentration

SUMMARY The diurnal pattern of plasma growth hormone levels has been investigated in nine children, without endocrinopathy, aged 8–15 yr., from whom blood samples were taken hourly during the day and 2-hourly at night. Growth hormone was undetectable (< 1 μmg./ml.) during the first 2 hr. after meals but the levels rose thereafter to values many times higher than those found in adults. High values were consistently encountered during the night.

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