THE EFFECTS OF ADRENALECTOMY AND CORTISONE ON ZINC METABOLISM IN THE SEX GLANDS AND ADRENAL OF THE MALE RAT

1960 ◽  
Vol 38 (8) ◽  
pp. 845-851 ◽  
Author(s):  
Allan D. Rudzik ◽  
Bernard E. Riedel

The effects of adrenalectomy and of cortisone treatment on the uptake of Zn65 and the concentration of zinc were observed in whole blood, adrenals, testis, and dorsolateral and ventral prostates of the rat. Cortisone was administered to both normal and adrenalectomized animals either as a single dose or as a daily dose over a period of 14 days. Zinc concentration was decreased in adrenalectomized animals in the blood and dorsolateral prostate. The incorporation of Zn65 was decreased after adrenalectomy in the testis and dorsolateral prostate. Daily treatment with cortisone resulted in recovery to normal of the zinc concentrations and uptake of Zn65.The adrenal gland was found to contain a relatively large amount of zinc and this concentration was doubled with the chronic administration of cortisone. A single dose of cortisone had no effect on the concentration of zinc but caused an increase in the uptake of Zn65 in the adrenal.

1960 ◽  
Vol 38 (1) ◽  
pp. 845-851 ◽  
Author(s):  
Allan D. Rudzik ◽  
Bernard E. Riedel

The effects of adrenalectomy and of cortisone treatment on the uptake of Zn65 and the concentration of zinc were observed in whole blood, adrenals, testis, and dorsolateral and ventral prostates of the rat. Cortisone was administered to both normal and adrenalectomized animals either as a single dose or as a daily dose over a period of 14 days. Zinc concentration was decreased in adrenalectomized animals in the blood and dorsolateral prostate. The incorporation of Zn65 was decreased after adrenalectomy in the testis and dorsolateral prostate. Daily treatment with cortisone resulted in recovery to normal of the zinc concentrations and uptake of Zn65.The adrenal gland was found to contain a relatively large amount of zinc and this concentration was doubled with the chronic administration of cortisone. A single dose of cortisone had no effect on the concentration of zinc but caused an increase in the uptake of Zn65 in the adrenal.


1960 ◽  
Vol 38 (1) ◽  
pp. 1003-1008
Author(s):  
Allan D. Rudzik ◽  
Bernard E. Riedel

The effects of hypophysectomy and ACTH administration on the uptake of Zn65 and the concentration of zinc were observed in whole blood, testis, adrenals, and dorsolateral and ventral prostates of the male rat. ACTH was administered to both intact and hypophysectomized animals either as a single dose or as a daily dose over a period of 14 days.Hypophysectomy resulted in a marked decrease in the relative specific activity in all tissues studied. The administration of ACTH, as a single dose, had no significant effect, but, as a daily dose over a period of 14 days, caused significant changes in both intact and hypophysectomized animals.The probability of a relation between the adrenal gland and the sex glands is discussed. Further a relation between adrenal activity and zinc metabolism is discussed.


1960 ◽  
Vol 38 (9) ◽  
pp. 1003-1008 ◽  
Author(s):  
Allan D. Rudzik ◽  
Bernard E. Riedel

The effects of hypophysectomy and ACTH administration on the uptake of Zn65 and the concentration of zinc were observed in whole blood, testis, adrenals, and dorsolateral and ventral prostates of the male rat. ACTH was administered to both intact and hypophysectomized animals either as a single dose or as a daily dose over a period of 14 days.Hypophysectomy resulted in a marked decrease in the relative specific activity in all tissues studied. The administration of ACTH, as a single dose, had no significant effect, but, as a daily dose over a period of 14 days, caused significant changes in both intact and hypophysectomized animals.The probability of a relation between the adrenal gland and the sex glands is discussed. Further a relation between adrenal activity and zinc metabolism is discussed.


1954 ◽  
Vol 32 (1) ◽  
pp. 41-49 ◽  
Author(s):  
D. W. Snair ◽  
Sybil E. Jaffray ◽  
H. C. Grice ◽  
L. I. Pugsley

The temporary effects of the administration of stilbestrol upon body weight, weight of the accessory sex organs, and the reproductive capacity of the male white rat have been studied. A linear relationship was obtained when the logarithm of the dose of stilbestrol administered (0.0125 to 5.0 mgm.) was plotted against the percentage decrease in testes weight. This same relationship was also found when the log of the dose was plotted against the percentage decrease in body weight although this line had a much more gradual slope.When the administration of stilbestrol was discontinued, the seminal vesicles coagulating glands, and ventral prostrates regained their weight by the third to fourth week but the weights of the testes remained below the control values until the sixth to ninth week. In a breeding experiment it was shown that a daily dose of 7.5 μgm. of stilbestrol causes sterility in the male. This does also slightly affected the weight of the accessory sex organs and their cellular structure.


1954 ◽  
Vol 32 (1) ◽  
pp. 41-49 ◽  
Author(s):  
D. W. Snair ◽  
Sybil E. Jaffray ◽  
H. C. Grice ◽  
L. I. Pugsley

The temporary effects of the administration of stilbestrol upon body weight, weight of the accessory sex organs, and the reproductive capacity of the male white rat have been studied. A linear relationship was obtained when the logarithm of the dose of stilbestrol administered (0.0125 to 5.0 mgm.) was plotted against the percentage decrease in testes weight. This same relationship was also found when the log of the dose was plotted against the percentage decrease in body weight although this line had a much more gradual slope.When the administration of stilbestrol was discontinued, the seminal vesicles coagulating glands, and ventral prostrates regained their weight by the third to fourth week but the weights of the testes remained below the control values until the sixth to ninth week. In a breeding experiment it was shown that a daily dose of 7.5 μgm. of stilbestrol causes sterility in the male. This does also slightly affected the weight of the accessory sex organs and their cellular structure.


1979 ◽  
Vol 7 (6) ◽  
pp. 583-587 ◽  
Author(s):  
Thomas Roth ◽  
Elizabeth I Tietz ◽  
Milton Kramer ◽  
Mark Kaffeman

The present study evaluated the efficacy of 25 mg of quazepam, a new benzodiazepine hypnotic, in a population of chronic insomniacs. The results indicate that a single dose (25 mg) administered for one night was efficacious when measured both objectively by polysomnographic recording and subjectively by questionnaire with no reported side-effects. The change in the objective measures paralleled the direction of change in subjective measures. Sleep efficiency and sleep maintenance were improved without EEG changes in Stages 2, 3-4, and REM. Further study is needed to evaluate the effects of chronic administration of different doses of quazepam in chronic insomniacs.


1976 ◽  
Vol 81 (1) ◽  
pp. 198-207 ◽  
Author(s):  
H. L. Verjans ◽  
K. B. Eik-Nes

ABSTRACT Effect of intramuscular administration of ACTH or dexamethasone on blood serum levels of testosterone, LH and FSH was examined in intact and castrated, adult, male rats. Six IU ACTH or 1 mg dexamethasone were given daily for 7 days. Corticotrophin treatment had no influence on circulating testosterone, LH and FSH in intact or castrated male rats. Dexamethasone administration resulted in a slight elevation of serum FSH in intact animals but not in castrates. LH and testosterone remained normal in both intact and castrated animals injected with dexamethasone. Under our conditions of study the secretions from the adrenal gland appear to be insignificant for the regulation of pituitary secretion of gonadotrophins in the male rat.


2021 ◽  
Vol 11 (2) ◽  
pp. 21-28
Author(s):  
V.P. Novikova ◽  
◽  
A.A. Pokhlebkina ◽  
D.V. Zaslavsky ◽  
A.I. Khavkin ◽  
...  

Enteropathic acrodermatitis is a rare hereditary form of zinc deficiency, characterized by periorial and acral dermatitis, alopecia and diarrhea. Refers to congenital disorders of zinc metabolism, inherited as an autosomal recessive disease resulting from mutations in the gene for the zinc transporter SLC39A4. The prevalence ranges from 1 to 9:1,000,000, with an overall incidence of 1:500,000 newborns. The disease usually manifests itself in infancy, within a few weeks of stopping breastfeeding and switching the baby to a cow's milk-based formula, or in the first days of life if artificially fed from birth. The classical clinical manifestations of acrodermatitis enteropathic are characterized by the triad: acral and periofital dermatitis, alopecia and diarrhea, but all three signs together occur only in 20% of cases. Diarrhea may develop concurrently with skin symptoms, may precede or occur later. Characteristic signs of skin lesions include sharply demarcated, dry, scaly erythematous plaques or edematous foci with vesicles and pustules on the skin of the elbow and knee joints, distal extremities, genitals, in the inguinal folds, which are usually symmetrically distributed, have sharp boundaries and irregular outlines. The course of the skin syndrome is long, as it progresses, non-healing erosive and ulcerative areas appear. Plasma zinc deficiency is the gold standard for diagnosis. Most infants with AE have low plasma zinc concentrations (<500 mcg/L or <50 mcg/dl), but a level of less than 70 mcg/L on an empty stomach or less than 65 mcg/dl in older non-dieting children is considered diagnostically significant. Treatment for this disease usually includes enteral or parenteral zinc administration, at a dose of 1-3 mg/kg/day. for elemental zinc. A clinical response is observed within 5–10 days. Supportive zinc therapy is necessary throughout the patient's life, although periods of remission have been reported. Topical therapy is also used: Dexpanthenol in the form of a cream, applied 3 times a day in the area of dermatitis, can enhance re-epithelialization. There is no significant evidence of improvement with topical zinc application. No activity restrictions are required for patients with acrodermatitis enteropathic. Key words: zinc deficiency, enteropathic acrodermatitis, children


PEDIATRICS ◽  
1986 ◽  
Vol 77 (1) ◽  
pp. 132-133
Author(s):  
MICHAEL H. N. GOLDEN ◽  
BARBARA E. GOLDEN

To the Editor.— Kumar and Anday1 describe three premature infants presenting with edema and hypoproteinemia—the classical signs of kwashiorkor—between 5 and 9 weeks of age. Such cases are not uncommon in developing countries. Kumar and Anday's patients had low plasma zinc concentrations (43, 37, and 42 µg/dL). On this basis the authors claim that edema and hypoproteinemia is a clinical presentation of zinc deficiency not previously reported. We reported2 a clear association between "nutritional" edema and a low plasma zinc concentration in 1979; our subsequent experience has confirmed that edema of this type is always associated with a low plasma zinc concentration, as indeed Kumar and Andays' cases demonstrate.


1992 ◽  
Vol 263 (5) ◽  
pp. R1162-R1168 ◽  
Author(s):  
M. E. Wastney ◽  
S. Ahmed ◽  
R. I. Henkin

To assess changes in zinc metabolism with age, kinetic studies were performed in healthy adults (26 men, 21 women) aged 20-84 yr after a single oral or intravenous bolus of 65Zn. Studies covered two consecutive 9-mo periods while subjects were on a basal dietary intake of approximately 10 mg Zn/day and while taking an additional 100 mg Zn/day orally. Zinc metabolism was analyzed by compartmental analysis using data from plasma, red blood cells, urine, feces, liver, thigh, and whole body [M. E. Wastney, R. L. Aamodt, W. F. Rumble, and R. I. Henkin. Am. J. Physiol. 251 (Regulatory Integrative Comp. Physiol. 20): R398-R408, 1986]. Changes in observed and model calculated values of zinc metabolism were assessed on age by regression. During basal state, zinc release from red blood cells decreased with age. During zinc loading, response (defined as change from basal state) of plasma zinc concentration, urinary zinc excretion, and liver zinc increased with age, while response of fraction of zinc taken up by red blood cells decreased with age. In men, response of amount of zinc absorbed increased with age and in women response of fraction of endogenous zinc excreted decreased with age. Four responses that changed with age (urinary excretion, red blood cell exchange, absorption, and endogenous excretion) occurred at previously defined sites of regulation of zinc metabolism. Results show that regulation of zinc metabolism changes with age.


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