Neuro Endocrinol Lett
January 2007
Ghrelin is one of the peptides involved into GH-release, binding to specific GHS receptors on hypothalamus and pituitary. The ghrelin peptide and ghrelin mRNA have been detected in several regions of hypothalamus, in normal pituitary, as well as in various types of pituitary adenoma, with different levels of expression in different tumour types. We decided to determine the expression of ghrelin in somatotroph adenomas.
View Article and Find Full Text PDFLocal inflammation is characterized by oxidative stress present in situ, and may also influence reactive oxygen species peripheral metabolism. Infiltrative ophthalmopathy is considered as an inflammatory disorder of autoimmune background. This study estimated influence of hyperthyroidism and antithyroid treatment on peripheral parameters of oxidative stress in 65 Graves' patients (40 with and 24 without infiltrative ophthalmopathy).
View Article and Find Full Text PDFObjectives: The study was designed to estimate the influence of hyperthyroidism and antithyroid treatment on oxidative stress peripheral parameters in Graves' disease patients with and without infiltrative ophthalmopathy.
Design And Methods: Free radical generation and scavenging plasma indices were determined in 47 patients with hyperthyroidism due to Graves' disease (22 with and 25 without infiltrative ophthalmopathy), as well as in 24 healthy volunteers after euthyroidism achievement with methimazole.
Results: In the hyperthyroid patients, hydrogen peroxide, lipid hydroperoxides, thiobarbituric acid-reacting substances, ceruloplasmin, superoxide dismutase, and catalase were increased.
Oxidative stress plays an important role in hyperthyroidism-induced tissue damage, as well as in development of autoimmune disorders. To clarify influence of thyroid metabolic status and autoimmune factors on blood extracellular indices of reactive oxygen species (ROS) generation and free radical scavenging in hyperthyroidism, we studied patients with newly diagnosed and untreated Graves' disease without infiltrative ophthalmopathy (17 female and 8 male, aged 41.8 +/- 8.
View Article and Find Full Text PDFInfiltrative ophthalmopathy, which may develop in patients with Graves' disease, is considered an inflammatory disorder of autoimmune background. There is growing evidence that changed reactive oxygen species (ROS) metabolism plays an important role in pathogenesis of autoimmune diseases. Corticotherapy is a principal method of ophthalmopathy treatment, and its therapeutic effect is partially connected with influence on ROS generation systems.
View Article and Find Full Text PDFInflammatory process is connected with the increased expression on cells of adhesion molecules, also including intercellular adhesion molecule-1 (ICAM-1) and endothelial leukocyte adhesion molecule-1 (ELAM-1). In active ophthalmopathy (GO) this process, of various severity, is progressing in orbital tissue. This is reflected by the increase in blood of these molecules soluble forms.
View Article and Find Full Text PDFThe frequent association of thyroid and parathyroid disorders has been reported. Most commonly, hyperthyroidism may coexist with hypercalcemia, but the latter is successfully treated when euthyroidism is achieved. However, the concomitant hyperthyroidism with primary hyperparathyroidism is of a rare occurrence.
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