The effect of two different doses of thyrotrophic releasing hormone (TRH) upon the plasma levels of growth (GH) and thyroid hormones in both sex-linked dwarf (dw) and normal (Dw) broiler hens was determined. In normal hens, 1.5 and 24 microg TRH/kg increased the GH plasma concentrations after 15 min. Plasma concentrations of T3 increased significantly 1 h after TRH injection, whereas T4 concent...

In the present times, it has been strongly postulated, from various experimental data of stalk section or hypothalamic lesion, that the secretory maintenance and regulation of trophic hormone by the adenohypophysis have certain relationship to some neural mechanisms in hypothalamus, and that some chemical transmitters from hypothalamus are liberated into the adenohypophysis to exert a specific ...

background: the aim of the study was to evaluate the third trimester urinary iodine excretion and to assess its relation with newborns thyroid function. materials and methods: a total  of  208 healthy third trimester pregnant women without previous history of thyroid disease were included in the study. urinary iodine levels of mothers were measured and neonatal tsh levels were screened on the 3...

Inappropriate TSH hypersecretion was diagnosed in a 34 years old woman. Earlier she had been treated by ablative therapy for hyperthyroidism. The present diagnosis was based on elevated basal serum TSH levels despite elevated serum free thyroid hormone level. Her TSH responses to TRH (peak value 240 mu/I) was high. Her albumin and prealbumin levels were normal. The serum TBG level, alpha subuni...

Plasma concentrations of thyroxine (T4), triiodothyronine (T3) and chicken GH (cGH), together with hepatic 5'-monodeiodination (5'-D) activity, were measured in normal (Dw) and dwarf chick (dw) embryos at incubation d 18. An injection of 10 micrograms of ovine GH (oGH) raised plasma concentrations of T3 in Dw embryos after 1 and 2 h and stimulated hepatic 5'-D activity after 2 h. A non-specific...

The present study aimed to study the effects of food deprivation and subsequent postprandial changes in plasma somatotrophic and thyrotrophic hormone levels and focused on the inter-relationships between these hormonal axes and representative metabolites of the intermediary metabolism of meal-fed broiler chickens. Male broiler chickens (2 weeks old) were fed a meal of 40-45 g/bird per d for two...

The question of the nature of antihormones and of the mechanism of the hormone-antihormone reaction has been a point of controversy for many years. The impetus for the numerous investigations carried on in recent years was provided by Collip who postulated the antihormone theory as a result of his experiments in 1934 and 1935. 4 Prior to this time, many workers were fully aware of the fact that...

Thyroid hormones play an important role in glucose metabolism and there is evidence of increased prevalence of thyroid dysfunction in obese and diabetic patients. This study aimed at evaluating the thyroid function and the effects of the triiodothyronine (T3) treatment on glycemia control, insulin sensitivity and subclinical inflammation in cafeteria-diet-induced obesity in rats. Obesity was in...

Patients with severe thalassaemia major suffer endocrine and other abnormalities before their eventual death from iron overload due to repeated blood transfusions. The endocrine status of 31 thalassaemic patients aged 2-5 to 23 years was investigated. Exact data were available on the rate and duration of blood transfusion in all of them and in many the liver iron concentration was also known. A...

25 November 1961 Eighty-fifth (Special General) Meeting PAGE Cameron, C. B. Oestrogen conjugates in the hepatic venous blood of the calf . . i Short, R. V. Further observations on defective synthesis of ovarian steroids in the SteinLevanthal syndrome ............ ii James, V. H. T. and Peart, W. S. Urinary steroid excretion in idiopathic hirsutism . ii Bush, I. E., Meigs, R. A. and Hunter, Shei...