Dark is a generally known potent stimulus for melatonin secretion. Studies have also reported that pineal and hypophyseal endocrine secretions are influenced by nutritional factors. The study was designed to investigate the combined effect of selenium supplementations and light deprivation on pineal and hypophyseal secretions in female Wistar rats. 36 female cyclical Wistar rats were divided in...

PURPOSE To evaluate the safety and efficacy of endovascular treatment of ophthalmic segment aneurysms with Guglielmi detachable coils (GDCs), as well as the primary indications for such treatment. METHODS We conducted a prospective study of 26 patients with 28 aneurysms of the ophthalmic segment in whom treatment with GDCs was attempted. Anatomic results were measured by statistical analysis ...

It is the primary purpose of this review to examine the problem of the genesis of tumors of the pituitary gland following thyroid removal or destruction by radioiodine. Since this problem is now under active investigation, it is hoped that such a summation of the pertinent data may be helpful in evaluating what has been done and in orienting research that may follow. Radioiodine-induced hypophy...

The results are reported of experimental research into the hypophyseal endorphins in 42 drug addicts killed by heroin overdose. All samples were found to contain endorphins in widely varied amounts: 21-239 ng/g, mean 81.8 +/- 45.8 ng/g.

Growth hormone (GH) is a metabolic hormone that plays an important role in long-bone growth and muscle accretion in mammals. The anterior pituitary gland at the base of the brain is the primary site of GH production and release into the general circulation. Neurons in the arcuate nucleus of the hypothalamus in the lower part of the brain secrete GH-releasing hormone ([GHRH] or factor [GRF]) and...

It is the primary purpose of this review to examine the problem of the genesis of tumors of the pituitary gland following thyroid removal or destruction by radioiodine. Since this problem is now under active investigation, it is hoped that such a summation of the pertinent data may be helpful in evaluating what has been done and in orienting research that may follow. Radioiodine-induced hypophy...