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Pàgina 1 des de 40 resultats
[Research on goiter. I. The behavior of the hematic glutathione before and after thyroidectomy].
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Effects of propylthiouracil treatment on antioxidant activities in blood of toxic multinodular goiter patients.
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Erythrocyte, serum and plasma antioxidant activities and the effects of propylthiouracil (PTU) treatment on these activities were studied in patients with toxic multinodular goiter. The activities of the erythrocyte antioxidant enzymes (glucose-6-phosphate dehydrogenase, catalase, Cu/Zn-superoxide
Biochemical changes during goiter induction by methylmercaptoimidazol and inhibition by delta-iodolactone in rat.
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BACKGROUND
We have demonstrated that the administration of delta-iodolactone (i.e., 5-iodo-delta lactone) of arachidonic acid (IL-delta), a mediator in thyroid autoregulation, prevents goiter induction by methylmercaptoimidazol (MMI) in rats. Other studies have shown that transforming growth factor
The null genotype of glutathione s-transferase M1 and T1 locus increases the risk for thyroid cancer.
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Susceptibility to chemical carcinogens plays an important role in the development of most cancers. Several polymorphisms of human drug-metabolizing enzymes influence this individual susceptibility. The genes that encode the isoenzymes of the glutathione s-transferase (GST) system present a
The role of selenium in iodine metabolism in children with goiter.
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Possible interactions between selenium and iodine metabolism were investigated in 7- to 16-year-old children with goiter (n = 136) living in southeastern Poland in iodine-deficient areas influenced by a sulfur industry. The Se-iodine interactions in these children were compared to the interactions
Selenium and goiter prevalence in borderline iodine sufficiency.
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METHODS
Selenium (Se) is required for the biosynthesis of selenocysteine-containing proteins. Several selenoenzymes, e.g. glutathione peroxidases and thioredoxin reductases, are expressed in the thyroid. Selenoenzymes of the deiodinase family regulate the levels of thyroid hormones. For clinical
Erythrocyte, plasma, and serum antioxidant activities in untreated toxic multinodular goiter patients.
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Erythrocyte, plasma, and serum antioxidant activities were studied in patients with newly diagnosed and untreated toxic multinodular hyperthyroid goiter and compared to healthy control subjects. Erythrocyte antioxidant enzyme activities, glutathione, malondialdehyde, and ceruloplasmin levels were
[Metal-binding functions and antioxidant properties in human thyroid gland under iodine deficient nodular colloidal goiter].
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Copper and zinc levels in the tissue of thyroid gland (TG) and their metal-binding proteins metallothioneins (MT) as well as state of the antioxidant system in persons that had no thyroid disease and patients with endemic iodine deficiency nodular colloidal goiter has been investigated. In the
[Antioxidant system activities and lipid peroxidation in nodal and non-nodal thyroid tissue of patients operated in connection with euthyroid nodular goiter].
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The activities of the antioxidant systems (AOS) and lipid peroxidation (LP) were studied in the thyroid (operation material) of patients with euthyroid nodular goiter (in carcinoma, adenoma, colloid goiter tissues as well as in non-nodular adjacent thyroid tissue). Increased activities of superoxide
Redox Status and Antioxidative Cofactor Metals Influence Clinical and Pathological Characteristics of Papillary Thyroid Carcinoma and Colloid Goiter.
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Papillary thyroid carcinoma (PTC) is the endocrine neoplasm that occurs the most often worldwide, and its molecular pathophysiology is still not well characterized. Redox status is recognized as an important factor of carcinogenesis, but its influence on the PTC's clinical course needs to be better
Oxidation products and antioxidant markers in plasma of patients with Graves' disease and toxic multinodular goiter: effect of methimazole treatment.
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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
Cell necrosis and apoptosis are differentially regulated during goitre development and iodine-induced involution.
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Necrosis and apoptosis coexist in the thyroid during goitre development and involution, but little is known about their respective causes. To test the possible role of free radicals, we analysed separately necrosis and apoptosis in male Wistar rats with depressed or normal antioxidant protection.
Increased lipid peroxidation and impaired enzymatic antioxidant defense mechanism in thyroid tissue with multinodular goiter and papillary carcinoma.
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OBJECTIVE
We aimed to evaluate the oxidant/antioxidant status of thyroid tissue in patients with multinodular goiter, papillary carcinoma and to compare with their nonpathologic tissues.
METHODS
We studied 41 patients with multinodular goiter who underwent surgical treatment. The patients were
[Trace elements storage peculiarities and metallothionein content in human thyroid gland under iodine deficiency euthyroid nodular goiter].
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Accumulation of iodine and copper in the node, paranodular and contralateral (not affected tissue by node) tissues of thyroid gland in relation to the level of metal-binding proteins, potential antioxidants and oxidative changes in tissue was investigated. To assess the severity of the pathological
Modulation of the biological effects of glucosinolates by inulin and oat fibre in gnotobiotic rats inoculated with a human whole faecal flora.
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The influence of dietary fibre on the biological effects of glucosinolates was investigated in gnotobiotic rats harbouring a human whole faecal flora. Animals were fed for 6 wk with diets containing 12% rapeseed meal (RSM) supplemented or not supplemented with 10% inulin (INL) or oat fibre. Both
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