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At least 19 recordsLinked to original sources
PubMed1975

The diagnostic value of hypothalamic-pituitary-adrenocortical function tests in patients with Cushing's syndrome.

The following examinations, including the estimation of urinary neutral steroid metabolites, plasma cortisol, the percentage of unbound-cortisol, cortisol production rate, plasma adrenocorticotrophin (ACTH), dexamethasone suppression test, ACTH stimulation test, metopirone test, lysine-vasopressin (LVP) test and insulin tolerance test, were conducted in 16 patients with Cushing's syndrome for the presence of hypercoticism and for identifying the cause of this syndrome. Of these tests, the measurements of plasma cortisol late in the day and single dose dexamethasone suppression test were most useful for the diagnosis of hypercorticism because of their reliability and simplicity. Urinary 17-KGS, THF/THE ratio, cortisol production rate and low dose dexamethasone suppression test were also useful, whereas insulin test and LVP test were less valuable for this purpose. For the identification of the causes of this syndrome, lysine vasopressin test and metopirone test were most reliable, and plasma ACTH was also useful for this purpose, whereas insulin test and ACTH stimulation test were less valuable.

17-Ketosteroids↗
PubMed1979

[The neuroendocrine response to Alfatesine or Ethrane anesthesia in humans].

The description of neuro-endocrine effects due to surgical stress and certain anaesthetic products led the authors to look for the action of alfadione and enflurane on the hypothalamic-hypophyseal-thyroidian-adrenal axis. Taking 20 subjects who were divided into three groups of 10, the authors measured the plasma levels of T3, T4, TSH, cortisol and ACTH during anaesthesia with alfadione (without surgery). This was group I. Group II were patients during surgery under alfadione. Group III was during surgery under enflurane. The results show the absence of significant changes in the plasma levels of the hormones measured. The authors conclude that alfadione changes the levels of T3, T4, TSH and cortisol even less than does enflurane, whether the anaesthesia is isolated or in a patient undergoing surgery.

Adrenocorticotropic Hormone↗
PubMedDate not supplied

[Experience in the use of competitive binding of hormones with proteins for the determination of non-metabolized glucocorticoids in the blood and urine in some pituitary-adrenal diseases].

A method of competitive protein-binding analysis was applied to the study of nonmetabolized glucocorticoids (NMG) in the plasma and urine of healthy persons and those suffering from hyper- and hypocorticism. NMG determination by this method reflected adequately the funcitonal condition of the adrenal cortex under normal conditions and in hypophyseo-adrenal diseases, including tests with ACTH and dexametazan, and coordinated with the results obtained by standard chemical methods.

Adrenal Insufficiency↗
PubMed1975

ACTH-secreting 'apudoma' of gallbladder.

The case of a 44-year-old woman is reported. The diagnosis after the appropriate tests and laparotomy was ACTH-secreting 'apudoma' of the gallbladder. This is a rare tumour and this case is believed to be the first reported of an ectopic hormone producing tumour from this side.

Adenocarcinoma↗
PubMedDate not supplied

[Mechanism of hyocorticosteronemia action of Strongyloides ratti in the rat].

In order to explain the hypocorticosteronemia which establishes itself in rats with Strongyloides ratti parasites, we are proceeding with a functional exploration of the hypothalamo-hypophyso-corticosurrenal axis in experimentally infested rodents. The adreno-cortico-tropic-hormone test (A.C.T.H.), stress to ether and the Lysin-8-Vasopressin and Metopirone tests lead to concordant results: -- the hypothalamo-pituitary-corticosurrenal present a functional integrity which allows it to react normally to direct stimulation or to feed-back; -- the deficiency seems to relate to the hypothalamic secretion of the cortico-releasing factor; -- the cause would stem from an inhibition of the nervous mechanism which regulates this neurosecretion.

Adrenal Cortex Hormones↗
PubMedDate not supplied

[Reactivity of the adrenals to ACTH in rats with alloxan diabetes].

Experiments were conducted on rats. A study was made of the adrenal gland ACTH reactivity under conditions of alloxan diabetes. The function of the adrenal gland increased one month after the administration of alloxan; this was indicated by an increase of their absolute and relative weight, by an elevation of the corticosterone content in the peripheral blood and the glands proper. ACTH stimulated the adrenal gland function in rats with an intact pancreas, increasing the weight of the adrenal glands, the level of corticosterones in the blood and the adrenal glands. ACTH reactivity proved to be lowered in rats with alloxan diabetes. The blood corticosterone level increased in them less and changes in the weight of the glands and of the hormone concentration in them proved to be statistically insignificant.

Adrenal Glands↗
PubMedDate not supplied

[Anomalies of corticotropin secretion in chromophobe adenomas].

Corticotrophic secretion has been studied in several groups of subjects during metopirone test and arginine L-Dopa infusion. In animals, a net plasma ACTH increase is observed under while it is inconstant after arginine L-Dopa. In hypopituitarism, metopirone ACTH levels are low and unchanged during the tests. In chromophobe adenoma, basal ACTH levels are high, ACTH increase is normal during test and significantly higher than in controls after L-Dopa injection. Significance of these metopirone corticotrophic abnormalities is discussed.

Adenoma, Chromophobe↗
PubMed1975

Relationships among the secretion of ACTH, GH, and cortisol during the insulin-induced hypoglycemia test in the normal and obese child.

The behavior of the secretion of ACTH, GH, and plasma cortisol during the insulin-induced hypoglycemia test on normal and obese children was studied. The secretion of the above-mentioned hormones was determined by calculating the integrals of the curves. The mean values of the integrals of the plasma cortisol and ACTH curves do not show any significant differences between the two groups of children. The mean values of the ratios between the integrals of the plasma cortisol and ACTH curves show a significant difference between the two groups (P smaller than 0.01). Since the mean values of the integrals of the plasma cortisol curves are practically the same in both groups, the difference in the above-mentioned ratios refers to the lower values of the integrals of the ACTH curves found in the obese children. This enables us to make the hypothesis that in the obese child the function of the pituitary-adrenal axis, at least during the insulin test, does not differ from the norm thanks to the adaptation of the ACTH secretion to the greater sensitivity of the adrenal glands to this hormone. In both the groups examined there was no correlation between the secretion of ACTH and plasma cortisol, between ACTH and GH, and between plasma cortisol and GH.

Adrenocorticotropic Hormone↗
PubMed1979

Genetic subtypes of unipolar primary depressive illness distinguished by hypothalamic-pituitary-adrenal axis activity.

Serum-cortisol response to the 1 mg overnight dexamethasone suppression test was investigated in 86 patients with unipolar primary depressive illness and 80 non-depressed controls (45 with mania and 35 with schizophrenia). The depressed patients were assigned to one of three genetic subtypes according to the family psychiatric history. Resistance to suppression of serum-cortisol by dexamethasone was found in 37 of 86 (43%) depressives and none of the 80 controls. Non-suppression distinguished the three genetic subtypes of depression, being found in 23 of 28 (82%) patients with familial pure depressive disease (F.P.D.D.), 13 of 35 (37%) patients with sporadic depressive disease (S.D.D.), and 1 of 23 (4%) patients with depression spectrum disease (D.S.D.). The three genetic subtypes were further distinguished by the age of onset, with S.D.D. the oldest, and by the number of previous depressive episodes, with F.P.D.D. the most. Severity of depression did not separate the three subtypes. This is the first report of a distinct neuroendocrine abnormality which supports an objectively defined classification of unipolar primary depressive illness. It is suggested that unipolar primary depressive illness is three or more separate illnesses, each with a potentially distinctive mode of inheritance, pathophysiology, neurochemistry, clinical course, and treatment response.

Adolescent↗