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Biomedical subjects

K Kaise

Publications and source records attributed to K Kaise.

80 records · Page 5Linked to original sources

Thyroid peroxidase activity in euthyroid and mild hypothyroid patients with Hashimoto's thyroiditis.

Thyroid peroxidase (TPO) activity was measured spectrophotometrically according to Hosoya's guaiacol method. The mean TPO activity in ten patients with Hashimoto's thyroiditis was 19.8 +/- 7.6 (mean +/- SE) in an arbitrary unit, which was not significantly different from the normal value in seven normal thyroid tissues (33.7 +/- 5.4). The ten patients were divided into two groups, euthyroid and mild hypothyroid, on the basis of their basal serum TSH. In the euthyroid group, TPO activity (8.17 +/- 1.3) was significantly less than the normal tissue (p less than 0.01). In the hypothyroid group, TPO activity (27.64 +/- 13.8) was almost similar to the normal tissue. A positive correlation was obtained between TPO activity and serum TSH in ten patients with Hashimoto's thyroiditis (r = 0.85, p less than 0.01). It was concluded that TPO activity is significantly decreased in Hashimoto's thyroiditis even when the thyroid function was still within normal range, but the activity might be restored to normal in hypothyroid patients by the stimulation of elevated TSH.

Adult↗

Changes in thyroid hormones by treatment with aspirin and prednisolone in subacute thyroiditis with hyperthyroidism.

Thyroid functions were studied in 11 patients with subacute thyroiditis accompanied by signs and symptoms of hyperthyroidism, and were compared with 13 patients with untreated thyrotoxicosis in which serum T4 was elevated to the identical level. Serum T3 was also elevated in subacute thyroiditis but to a significantly lower extent than in thyrotoxicosis. Therefore the ratio of T4/T3 was significantly higher in subacute thyroiditis than in thyrotoxicosis. Although duration of thyroid swelling was shorter in the group treated by prednisolone than by aspirin, the accelerated ESR, thyroid tenderness and fever subsided almost similarly in the two groups. Serum T4 and T3 levels declined more rapidly in treatment with prednisolone compared with aspirin. In patients treated by aspirin initial increase in T3 level occurred transiently with simultaneous decrease in the T4/T3 ratio. These changes suggest the increase in peripheral conversion of T4 to T3. Even in severe cases of subacute thyroiditis associated with hyperthyroidism, aspirin treatment is an effective therapy and there is no recurrence following withdrawal of the medication.

Adult↗

Correlation between per cent discharge of thiocyanate test and thyroid functions in patients with Hashimoto's disease.

The thiocyanate test was carried out in 18 patients with Hashimoto's disease. Thiocyanate was given orally several hours after the administration of tracer doses of 131I when the thyroid counts seemed to have reached a plateau. The per cent discharge of thiocyanate test was significantly higher in the groups with lower level of T4 (less than 5.5 microgram/100 ml), RSH (less than 25.5%) and BMR (less than +2.5%), and higher levels of TSH (greater than 10.0 muU/ml). A chi-square (chi2) test with Yates correction led to chi2 = 3.56 (1 df) with P = 0.06 (per cent discharge vs T4, RSU, BMR and TSH). Then the per cent thiocyanate discharge was increased with the degree of hypothyroidism in patients with Hashimoto's disease. The correlation between the per cent discharge and 131I 24 h uptake was not significant. It was apparent that the iodide concentration mechanism was present even in the severe hypothyroid stage of Hashimoto's disease. This disproportion between the uptake of iodide and the iodide organification may result in the increase in unbound iodide. It is concluded that the hypothyroidism in Hashimoto's disease may not be caused by a defect in iodide organification, even if it correlated to the degree of hypothyroidism.

Adult↗

A case of thyrotropin (TSH)-secreting tumor complicated by periodic paralysis.

A 27-year-old man had symptoms of hyperthyroidism and periodic paralysis. While hyperthyroid, his serum thyrotropin (TSH) level was inappropriately elevated at 6.4 microU/ml. The serum alpha subunit level was also elevated. MR imaging revealed a pituitary tumor and transsphenoidal adenomectomy was performed. Immunocytochemistry with an antibody directed against the beta-subunit of TSH revealed a TSH-secreting tumor. This is the first case of hyperthyroidism due to a TSH-secreting pituitary tumor complicated by periodic paralysis. This association indicates that thyrotoxicosis may induce paralysis in susceptible persons by a mechanism which is not autoimmune.

Adenoma↗