Thyrod

Experiments were conducted on six head of sheep of the Slovak Merino breed with average live weight of 40 kg. The sheep received 0.4 kg of industrially produced molasses feed M and 1 kg of meadow hay once a day. The feed ration for a head of sheep per day contained: 1177.58 g dry matter, 89 g digestible crude protein (SNL), 0.554 starch units. The animals had free choice of water. Rumen epithelium with submucosa was used in the experiment. Amino acid transfer was measured in a mucosa-serosa direction. Amino acids were dissolved in Thyrode's solution with pH value 6...

Human ovaries from adnexectomy were perfused via the ovarian artery with constant volume of Thyrode's solution. Perfusion pressure was recorded while doses of PGF2 alpha or PGF2 (2.5, 5 or 10 microgram/min) were infused for 10 min. During the 10-min infusion period an increase in perfusion pressure (delta mm Hg) was observed in proportion to the doses of PGF2 alpha. PGE2 in 2.5- or 5-microgram/min doses were ineffective, but its 10-microgram/min dose increase the perfusion pressure. However, PGE2 (4 microgram/min) infused continuously into the ovary inhibited the vasoconstriction induced by PGF2 alpha, whereas the vasoconstrictor effect of noradrenaline remained unchanged...

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

Autoimmune thyroiditis is characterized by lymphocytic accumulation within the thyroid which may be the result, in part, of immunomodulatory cytokine secretion by thyrocytes. We have tested human thyroid cell cultures (n = 9) for interleukin-6 (IL-6) release using two bioassays. IL-6 was detected in all culture supernatants under basal conditions and was increased by gamma-interferon, tumour necrosis factor and TSH in a dose-dependent manner. The bioactivity was confirmed as IL-6 by immunoblotting experiments and could not be accounted for by contamination of the thyroid cell cultures with fibroblasts, lymphocytes or monocytes...

The Authors describe a case, which came under their observation, of indifferentiated neoplasia of the thyroid associated with Hashimoto's disease; treated surgically by total thyroidectomy, at a distance of over four years it did not show signs of recurrence. Consideration is also given to pathogenetic and clinical problems, as well as those of surgical therapy, which such a combination between autoimmune thyroditis and a neoplastic process may raise.

Six patients with subacute thyroditis were followed with serial measurements of T4, FT4, TSH and RAI uptake. Five of the six underwent TRH stimulation early in the course of their illness. All six patients had elevated or high normal values for T4 and FT4 at the time of their clinical presentation (mean = 13.8 microgram per 100 ml and 3.9 ng per 100 ml, respectively). RAI uptakes were 1% or less in all six. TRH testing revealed a suppressed TSH response (mean deltaTSH less than0.1 muU/ml) in all five patients tested, suggesting hyperthyroidism...

In order to evaluate the effects of dibromotyrosine (DBT) on the thyroid function (already demonstrated in animals), thyroid tests were performed in 10 subjects with functional signs of thyroid hyperfunction, before and after administration of 1800 mg (600 X 3) of DBT for 10 days. The results show a mild decrease of the RAI uptake, but no significative interference on the thyrodal hormonogenesis. According to the author, the DBT seems to act on the hypothalamic centers regulating the thyroid function, due to its peculiar molecular components...

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There are abundant experimental and clinical data to associate radiation exposure and thyroid cancer. The incidence of thyroid cancer increases with increasing doses of thyroidal radiation from 6.5 rads to 1,500 rads, but higher doses tend to destroy the gland and are associated with hypothyroidism rather than cancer. The peak occurrence of thyroid tumors is between five and 30 years after exposure, but a person may develop thyroid tumors as long as 50 years after irradiation. Multiple thyroidal lesions or disorders, including adenomas, thyroditis, and hypothyroidism as well as malignant neoplasms, can occur after radiation exposure...

The thyromimetic activity of 3,5-dimethyl-3'-isopropyl-L-thyronine (DIMIT), a nonhalogenated thyroid analog, was studied in adult men using suppression of TRH-induced TSH release to assess this activity. In nine men, aged 30-58 yr, the TSH increment after 500 microgram TRH iv was compared to the TSH response to TRH 24 h after oral administration of 1 mg DIMIT. Eight euthyroid subjects had normal baseline TSH levels of 1.5 +/- 0.2 (SE) microunit/ml that fell significantly to 0.7 +/- 0.2 microunit/ml 24 h after DIMIT (P less than 0...