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Results for “Adrenocortical Hyperfunction”

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PubMedDate not supplied

[Correlation of hydrocortisone and corticosterone content in assessing the functional state of the adrenal cortex in varying forms of hypercorticism].

Separate determination of hydrocortisone and corticosterone in the blood of patients with the hypercorticism symptom-complex showed that elevation of the corticosteroid concentration could occur on account of similar elevation of the concentration of both hormones, or one of the hormones alone. Analogous data were observed in patients after ACTH administration. Dexamethasone administration caused a reduction of the hydrocortisone and corticosterone concentration in patients with Itsenko-Cushing's disease, but to a lesser degree than in healthy individuals. Administration of the preparation to the patients with juvenile dyspituitrism decreased the cortizol level, but corticosterone chiefly; as to the patients with the hypothalamic syndrome--only the cortizol level was reduced, the level of corticosterone remaining unchanged. Thus, the evidence obtained before and after the administration of the ACTH preparations and dexamethasone permitted to assess the adrenal cortex function more fully and to defect disturbances of the corticosteroid secretion of interest of the understanding of the clinical symptoms of the disease.

11-Hydroxycorticosteroids↗
PubMedDate not supplied

[Metabolism and content of proteins in rat tissues under the effect of sodium ribonucleate in experimental hypercorticism].

Experimental hypercorticism induced by multiple injections of ACTH-zinc-phosphate inhibits the incorporation of 1-14C-alanine and 3H-methionine into proteins of the liver, spleen, musculus quadratus femoris, blood and nuclear plasma, mitochondria, microsomas and cytosol of the liver as well as decreases the protein content in them. Under the effect of ACTH-zinc-phosphate in combination with enteral administration of sodium ribonucleate, the deviations from the normal level in the incorporation of the labelled amino acids into proteins and in the protein content of the tissues under study are less pronounced than under the effect of the hormone only. An opinion is advanced that enteral injection of sodium ribonucleate may be more preferable than parenteral administration of this preparation with hypercorticism under clinical conditions.

Adrenocortical Hyperfunction↗
PubMed1991

Parapituitary meningioma in a dog with pituitary-dependent hyperadrenocorticism.

A dog with constitutional and cutaneous signs of hyperadrenocorticism had central visual impairment caused by an intracranial mass. Irradiation of the presumed pituitary mass did not improve the dog's condition. At necropsy, the intracranial mass was not of pituitary origin, but rather, was a parapituitary meningioma.

Adrenocortical Hyperfunction↗
PubMedDate not supplied

[Surgical aspects of the treatment of adrenal gland diseases].

With the greatly enhanced accuracy of current endocrinologic diagnosis assisted by precise diagnostic imaging, together with greatly enhanced preparation of patients with endocrinopathy for safer anesthetic and surgical procedure (e.g. adrenal cortical cancers, cortisol and aldosterone producing adenomas and pheochromocytomas), operative procedures can be planned and conducted more precisely. For the surgeon, the strategy for treatment of functional and neoplastic disorders of the adrenal glands has essentially to consider the anatomy of the suprarenal glands, the deleterious effects of hormone excess before and during operation, the presumed nature of incidentally discovered adrenal mass and the size of the tumor.

Adrenal Gland Diseases↗
PubMed1990

[The diagnosis of adrenal cortical function in animals using hormone analysis].

This paper describes the use of hormone analysis in the diagnosis of adrenal cortex dysfunction in the dog, cat and horse. Analytical problems concerning the determination of corticosteroid levels are discussed and the pathology of adrenal dysfunction is briefly presented. The paper focuses on the problems in establishing physiological norms for adrenal function based on the established assays. Own experiences and other reported data are referred to.

Adrenal Cortex Diseases↗
PubMed1990

Problems associated with medical therapy of canine hyperadrenocorticism.

The cause of hyperadrenocorticism determines treatment. Pituitary-dependent hyperadrenocorticism (PDH) can be treated surgically with bilateral adrenalectomy or hypophysectomy, or it can be managed medically with the adrenocorticolytic agent o,p'DDD or the cortisol synthesis inhibitor ketoconazole. Unilateral adrenocortical tumors should be surgically removed because of metastatic potential, although medical therapy has been used with some success. Regardless of the treatment method chosen, canine Cushing's syndrome cannot be treated easily, inexpensively, or without close monitoring and follow-up.

Adrenal Cortex Neoplasms↗
PubMed1990

Comparison of two low-dose dexamethasone suppression protocols as screening and discrimination tests in dogs with hyperadrenocorticism.

Two low-dose dexamethasone suppression test protocols were evaluated in 18 dogs with hyperadrenocorticism (14 dogs with pituitary-dependent hyperadrenocorticism [PDH] and 4 dogs with adrenocortical tumor) and in 5 healthy control dogs. Blood was obtained immediately before and 2, 4, 6, and 8 hours after IV administration of either 0.01 mg of dexamethasone sodium phosphate/kg of body weight or 0.015 mg of dexamethasone polyethylene glycol/kg. At 8 hours after dexamethasone administration, 18 of 18 (100%) dogs with hyperadrenocorticism given the sodium phosphate preparation and 16 of 18 (89%) affected dogs given the polyethylene glycol preparation failed to have suppression of plasma cortisol concentration (less than 1.4 micrograms/dl). Plasma cortisol concentration was suppressed to less than 1.4 micrograms/dl at 2, 4, and/or 6 hours after administration of either dexamethasone preparation in 5 of 14 dogs with PDH and to less than 50% of baseline cortisol concentration in 10 of 14 dogs with PDH. Suppression, as identified by these 2 criteria, was not observed at 2, 4, 6, or 8 hours after administration of either dexamethasone preparation in dogs with adrenocortical tumor. For both protocols, the 8-hour plasma cortisol concentration was suppressed to less than 1.4 micrograms/dl and to less than 50% of baseline in the 5 control dogs. Both protocols were comparable for use as screening tests in establishing a diagnosis of hyperadrenocorticism. Suppression of plasma cortisol concentration to less than 50% of baseline (or less than 1.4 micrograms/dl) during the test was consistent with diagnosis of PDH. Failure to have such suppression, however, was observed in dogs with PDH as well as in those with adrenocortical tumor.

Adrenal Cortex Function Tests↗
PubMedDate not supplied

[Contribution to the study of endocrinopathies in black Africans (author's transl)].

For a long time endocrine pathology was unrecognized or even denied to exist in Black Africans, but this is not true. It seems to be recognized more frequently since medicalization has increased. This pathology does not present any particularities. Hyperthyroidism appears frequently, at least in urban areas. A series of 87 personal cases has permitted a review of the principal clinical and biological aspects; myasthenia seems to be particularly important; radical treatment is preferred over prolonged medical treatment which is not within the financial possibilities of our patients. There have been 30 observations of cortico-adrenal anomalies of which 7 known personally. It must be noted that the Black living in his traditional rural environment presents a certain degree of physiological hypocorticism with respect to whites and especially Blacks of higher social standing. Pathological hypocorticism is essentially due to tuberculosis; the melanodermia is evident to an alert observer. Metabolic hypercorticism produces the usual manifestations. Only 9 cases of Sheehan syndrome have been reported (5 personal). In the Black African woman, it appears earlier than in Europe often due to premature nuptiulity and the higher incidence of tachyparity. One is surprised that this syndrome is detected so rarely; it is, without a doubt, often well tolerated during a long period of time therefore goes undetected.

Adrenal Cortex Diseases↗
PubMedDate not supplied

[Clinical value of radionuclide imaging in the diagnosis of the adrenal cortex lesions].

Results of using radioisotopic visualization of the adrenal glands together with the hormonal profile determination ACTH, renin, aldosterone, cortisol) for the diagnosis of the adrenal gland affections are presented. Parameters of the scintigraphic appearance of the affected adrenal cortex were developed to distinguish six types of scintigraphic patterns of the adrenal gland, which were the most frequent. Clinical analysis of the results of the examination of patients indicated Conn's disease in 24 patients (it was verified during the operation), 12 had unilateral corticosteroma of the adrenal gland, 8 suffered from residual adrenal gland tissue, and 2 had metastases of malignant tumours of the adrenal glands. Accumulation of radiopharmaceutical preparations into the corpus luteum was revealed in one case.

19-Iodocholesterol↗