Neuroendocrine reasons include disorders of the autonomic ner vous system (leading to hypoglycaemia unawareness), pancreas (glucagon deficiency/due to destruction of islets of Langerhans, and exocrine enzyme deficiency, due to destruction of exocrine pancreas) and other glands which secrete counter-regulatory hormones (e.g.; cyclical Cushing's, pheochromocytoma, changes in thyroid function while using thyrotropic
action of human chorionic gonadotropin.
[39.] Armstrong DT, Hansel W The effect of age and plane of nutrition on growth hormone and thyrotropic
hormone content of pituitary glands of Holstein heifers.
However, in adult chickens, TRH no longer has a clear thyrotropic
activity, whereas its somatotropic activity depends on the feeding status of the birds .
, and gonadotropic function impairments manifests clinically as short stature, neonatal hypoglycemia, sequential loss of anterior pituitary tropic hormones .
(iii) In six patients, the operation was postponed due to various clinical conditions, often related to hormonal disorders within different pituitary gland axes (mostly thyrotropic
), which required treatment.
Mono- and plurihormonal thyrotropic
pituitary adenomas: Pathological, hormonal and clinical studies in 12 patients.
When circulating levels of thyroid hormones are low, the hypothalamus responds by releasing TRH, which then stimulates thyrotropic
cells in the anterior pituitary to produce and secrete TSH.