BACKGROUND Use of recombinant human thyrotropin increases the thyroid radioiodine (iodine 131 [(131)I]) uptake and may have a role in the context of (131)I therapy of benign goiter. METHODS In a double-blind, placebo-controlled trial, 57 patients with nodular nontoxic goiter (51 women and 6 men) were randomized to receive either 0.3 mg of recombinant human thyrotropin (n = 28) or placebo (n =...

BACKGROUND To detect recurrent disease in patients who have had differentiated thyroid cancer, periodic withdrawal of thyroid hormone therapy may be required to raise serum thyrotropin concentrations to stimulate thyroid tissue so that radioiodine (iodine-131) scanning can be performed. However, withdrawal of thyroid hormone therapy causes hypothyroidism. Administration of recombinant human thy...

BACKGROUND Clinical hypothyroidism and hyperthyroidism are recognized causes of reversible dementia, but previous studies relating thyrotropin levels to cognitive performance in clinically euthyroid persons have yielded inconsistent results. METHODS We related serum thyrotropin concentrations measured at baseline (March 1977-November 1979) to the risk of Alzheimer disease (AD) in 1864 cogniti...

conclusions sch is associated with increased level of pla2-iia, which is independent of bmi. the stronger association of sch with pla2-iia than with hs-crp indicates that pla2-iia is an inducer of inflammation while hs-crp is not. results serum levels of tg, cholesterol, and ldl were higher in the sch group than the control group. however, there was no significant difference between the two gro...

Plasma membranes derived from rat thyroid tumor (1-8R) which is unresponsive to thyrotropin but is responsive to dibutyryl adenosine 3':5'-cyclic monophosphate bind less than 20% of the [125I] thyrotropin which can be bound to plasma membranes from normal rat thyroids under conditions which optimize tumor membrane binding relative to normal thyroid membranes. In addition, the binding is differe...

BACKGROUND Recent studies suggest that relatively low thyroid function within the clinical reference range is positively associated with risk factors for coronary heart disease (CHD), but the association with CHD mortality is not resolved. METHODS In a Norwegian population-based cohort study, we prospectively studied the association between thyrotropin levels and fatal CHD in 17,311 women and...

We have developed a highly sensitive radioimmunoassay of thyroxine and thyrotropin for mass screening for neonatal hypothyroidism. This assay involves a single disc (3 mm diameter) of dried blood on filter paper. The minimum detectable concentrations are 15 pg/tube (10 microgram/L) for thyroxine and 15 nano-int. units/tube (10 milli-int. units/L) for thyrotropin; intra- and interassay CV's are ...

Thyrotropin stimulates the incorporation of 32P into phospholipids of thyroid slices incubated with 32P04. To determine whether this effect could be secondary merely to an increase in the specific activity of the terminal (y) P of ATP, a precursor of phospholipid P, the effect of thyrotropin on calf thyroid slice ATP was measured with an assay which is selective for ATP-T-~~P specific activity....

Thymic size and density were studied in 23 untreated patients with Graves' disease and 38 control subjects using computed tomography. Both thymic size and density were higher in untreated patients with Graves' disease than in control subjects in the age-matched group. After treatment with antithyroid drugs, both thymic size and density were significantly reduced, with a concomitant decrease in ...

Abnormally high plasma thyrotropin values were found by radioimmunoassay in some patients when an antiserum to porcine thyrotropin was used, normal results being obtained with an antiserum raised to human thyrotropin. These discrepancies were found in some subjects with no biochemical or clinical evidence of hypothyroidism and occasionally in sera from patients with unequivocal hyperthyroidism....