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Results for “11-Hydroxycorticosteroids”

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PubMedDate not supplied

[alpha-glycerolphosphate dehydrogenase activity in rabbit organs and tissues in various endocrine disorders].

Activity of alpha-glycerophosphate dehydrogenase (GPDG) from rabbit tissues was distinctly decreased in hypothyroidism and increased in hyperthyroidism. In alloxane diabetes and after administration of high doses of insulin the GPDG activity, and especially the activity of its mitochondrial form, was markedly decreased in kidney and heart tissues; it was unaltered or slightly increased in liver tissue and sceletal muscles, as compared with control. The hormonal regulation of the GPDG activity is a complicated process, in which are involved not only the hormones of thyroid gland but also hormones of other endocrine glands.

11-Hydroxycorticosteroids↗
PubMed1979

[Increase in the sensitivity threshold of the hypothalamo-hypophyseal complex to the inhibiting action of dexamethasone in the process of aging and in cervical cancer].

The basal level of the androgenic and glucocorticoid hormones excretion and the level of blood glucocorticoids were studied in 237 females (52--control group, 185--cervical cancer patients) depending on the age and the ovarian function state. Also, the threshold of sensitivity of the hypothalamo-hypophyseal function complex was estimated by a dexametazone test. Healthy females were shown with progressive ageing to have a relative preponderance of glucocorticoid hormones over androgenous ones, which is also observed in cervical cancer irrespective of age group. With ageing in healthy females the threshold of the hypothalamo-hypophyseal complex sensitivity is raised, whereas in cervical cancer patients an increased threshold of the sensitivity is observed in younger age groups and is more manifest. The increased threshold of the hypothalamo-hypophyseal complex sensitivity seems to be one of the mechanisms responsible for the occurrence of such unfavourable hormonal shift (a relative predominance of glucocorticoid hormones over androgenic ones), which in its turn play a significant part in tumors origination and development.

11-Hydroxycorticosteroids↗
PubMed1977

[Effect of chronic stimulation of rats with intact and deafferented hypothalamuses on lipid metabolism and the adrenal cortex].

Chronic irritation of the falsely operated rats and those with the deafferentated hypothalamus led to reduction of total blood cholesterol and the accumulation of triglycerides in the liver. Dexamethasone administration was accompanied by an increase of blood cholesterol and triglycerides and the triglyceride accumulation in the liver. The action of dexamethasone was more pronounced in the animals with the deafferentated hypothalamus. The rate of 11-oxycorticosteroid secretion into the adrenal vein is reduced in the latter.

11-Hydroxycorticosteroids↗
PubMed1977

[Glucocorticoid function of the adrenals and the state of the sympathetic-adrenal system in newborn infants with an hypoxic lesion of the central nervous system].

The convened studies demonstrated an activation of the hypothalamo-hypophysis-adrenal and sympathico-adrenal system in the newborn with slight and moderately expressed forms of CNS lesions. At the same time there was a relative insufficiency of such functions in children with severe forms of CNS lesions. The achieved data permit to substantiate the pathogenetical therapy.

11-Hydroxycorticosteroids↗
PubMedDate not supplied

[The character of functional connections in the endocrine system of female white rats and their transformation with age].

The authors studied the functional interrelations between the adrenal glands and the thyroid gland of female albino rats of various age groups. Blood content of 11-oxycorticosteroids and protein-bound iodine was determined. Analogous determinations were carried out in partial exclusion of the adrenal gland function (metapyron block) and of the thyroid gland function (6-methyluracil block). It is supposed that in the young sexually-mature female albino rats the functions of the adrenal glands and the thyroid gland were in direct relationship irrespective of the cyclic variations in the sex steroid secretion; with the advance of age this association became deranged.

11-Hydroxycorticosteroids↗
PubMed1976

[Activity of adrenal cytoplasmic dehydrogenase following prolonged ACTH administration].

The activity of cytoplasmic dehydrogenases of the adrenal cells was examined during the prolonged injections of ACTH to Wistar rats. The indices of specific steroid synthesis function of the glands remained relatively high in the course of the whole experiment. Changes in the rats of corticosterone synthesis and dehydrogenase activities were phasic in character; they included an initial synchronic activation the first two days with its subsequent decrease (7 days of ACTH injections). The prevalence of activities of NADP-dependent dehydrogenases in combination with reactivation of steroidogenesis was marked during the concluding phase (13 days) of the experiment. A possibility of the adaptive role of selective activation of NADP-dependent enzymes in the maintenance of a high level of hormone biosynthesis under conditions of prolonged ACTH stimulation is discussed.

11-Hydroxycorticosteroids↗
PubMed1976

[Effect of long-lasting noise on the plasma concentration of catecholamines, glucocorticosteroids and PBI in pigs].

Exposure of pigs with a body mass of 25-30 kg to long-lasting motor noise (108 dB, 60-8000 Hz, 72 hours) results in a considerable increase of catecholamine concentration in the plasma. Coincidently there is a sharp continuous decrease of the 11-OHKS in the plasma during the whole period of exposure to noise. Immediately after stopping the acoustic irritation the concentration of plasma corticosteroids increases again. The electroencephalogram (EEG) giving evidence of inhibition signs during exposure to noise an adaptation effect of the information processing system is concluded. The increase of the PBJ during the period of acoustic stress points to an increased function of the thyroid gland but simultaneously it is considered to be an expression of the elevated adrenergic situation. By reason of the strong deviation of the three observed regulatory systems must be concluded that longer-lasting exposure to noise with the applied quality and intensity represents a stress situation for pigs having noise character as established for men. A possible influence on the productivity of the pork type pig by permanent acoustic stress is indicated.

11-Hydroxycorticosteroids↗
PubMed1977

[Indices of lipid metabolism, thyroid gland and adrenal cortical function in prolonged stress of the central nervous system in chronic stimulation of the adrenals].

The experiments were conducted in 14 male rabbits dynamically on the 5th, 10th, 20th, 30th, 40th, 60th and 80th day of the central nervous system tension or at rest, including the studies of lipid metabolism (total cholesterol and beta-lipoproteins content), the function of the thyroid gland (protein bound iodine content) and the function of the adrenal cortex (11-OCS content). Such lasting stimulation of the adrenal cortex was found to be accompanied by hypercholesterolemia, hyper-beta-lipoproteinemia, elevated 11-OCS level and lack of thyroid function changes. A lasting tension of the central nervous system against the background of chronic stimulation of the adrenals delays the development of hypercholesterolemia and hyper-beta-lipoproteinemia, reduces the function of the thyroid gland, and increases the function of the adrenal cortex. The observed shifts in the lipid metabolism may be of atherogenic importance. The obtained data may be useful for the study of the pathogenesis of hormonal shifts in atherosclerosis.

11-Hydroxycorticosteroids↗
PubMed1978

[Glucocorticosteroid, catecholamine and protein-bound iodine (PBI) plasma levels in swine following electrocutaneous stimulation].

Application of electrocutaneous stimuli for short-time excitation of swine, accompanied by high locomotor activity, led in animals weighing between 30 kg and 45 kg to steep rises of catecholamine and glucocorticosteroid plasma concentrations, while little change was recordable from protein-linked iodine. Increase in plasma glucose and RQ in animals with higher rises in plasma-borne catecholamines and glucocorticoids was higher than that in animals with lower catecholamine deflection. Both the results reported in this paper and findings obtained from other studies into swine are likely to suggest major involvement of the sympathico-adrenomedullary system in the buildup of transport stress. Interdependence was found to exist between the intensity of the adrenergic reaction, on the one hand, and rises in plasma glucose and RQ as well as drop of pH, on the other. Those findings from various tests seem to support the conclusion that under conditions of severe excitation and high locomotor activity the differentiated resistance of swine to stress is atributable to different intensities of sympathico-adrenergic reaction of the animal concerned.

11-Hydroxycorticosteroids↗