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PubMedDate not supplied

[Reaction of the endocrine system and peripheral blood of rats to a single and chronic exposure to pulsed low-frequency electromagnetic field].

Wistar male rats underwent a single exposure for 20 min, 1 and 2.5 hour to a pulsed electromagnetic field of 20 mT or a single exposure for 2.5 hour and a chronic exposure for 6 hours a day during 30 days to a pulsed electromagnetic field of 0.1 mT, the pulse time and an interval between pulses being 10(-2) sec. As a result, the experimental animals showed changes in the activity of the adrenals, thyroid and sex glands as well as eosinopenia and lymphopenia. The concentration of thyroid hormones and lymphocytes remained lowered during 2 months after a single exposure to 20 mT. In some cases the exposure modified the physiological responses of rats to an acute stress-5-hour immobilization.

Adrenal Cortex↗
PubMed1989

[Functional status of the endocrine system in patients with hypertrophic cardiomyopathy].

The study was undertaken to examine 27 patients aged 20 to 50 years who had hypertrophic cardiomyopathy (HC). Group 1 consisted of 12 patients with asymmetric cardiomyopathy. Group 2 comprised 15 with symmetric cardiomyopathy. Blood samples were taken from the cubital vein before and 30 and 60 minutes after administration of 0.2 mg thyroid-releasing hormone (TRH). Blood hormone concentrations were measured by radioimmunoassay. TRH test was found to provide an essential information on the function of the hypothalamo-hypophyseal-thyroid and hypothalamohypophyseal-adrenal systems in HC patients. The HC patients showed lower function of the hypothalamo-hypophyseal-adrenal system. There was a decrease in serum testosterone during all the periods of examination. At the same time the patients from Groups 1 and 2 had substantial features of the function of various links of the immune system, which may suggest a variance in the pathogenesis of the two types of the disease.

Adult↗
PubMed1987

Effects of gamma-interferon on the endocrine system: results from a phase I study.

Interferon causes profound biological changes when given to patients with cancer and many of these could not be predicted from in vitro or animal model systems. We documented significant changes in hormonal levels for a group of 18 patients who were participants in a Phase I gamma-interferon trial. Adrenocorticotropic hormone, cortisol, and growth hormone were all significantly elevated 2 h after treatment with gamma-interferon, with cortisol and adrenocorticotropic hormone returning to base line by 24 h. A placebo group failed to show this change, suggesting a specific interferon effect. Possible mechanisms for these findings and implications for the use of interferons are discussed.

Adrenocorticotropic Hormone↗
PubMed1987

[Effect of glucocorticoids on the endocrine system of the pancreas of the pigeon and rat after a food load].

The level of 35S-methionine incorporation (in 15, 30 min, 1, 2, 3, 6, 12, 24 h) has been investigated in A- and B-cells of the pigeon and rat pancreatic islets against the background of excessive injection of hydrocortisone. The pigeon and rat A- and B-endocrinocytes respond in a similar was to the excess of hydrocortisone. An accelerated elimination of the isotope from the pigeon A- and B-endocrinocytes is noted, while in the rat the effect of the excessive hydrocortisone is opposite.

Animals↗