We assessed the LKB "Delfia" (time-resolved dissociation-enhanced lanthanide fluoroimmunoassay) and the Amersham "Amerlite" (enhanced luminescent immunometry) assays of thyrotropin in serum. Both assays are sensitive (respective detection limits: 0.02 and 0.04 milli-int. unit/L) and have very good within- and between-batch precision over a wide range of thyrotropin concentrations. Results by th...

Willis-Ekbom disease (WED), also known as restless legs syndrome, is generally accepted as a disease of unknown pathophysiology, though it is believed that dysfunctions in the dopaminergic system and iron metabolism may play a role. However, an increasing body of evidence points to the insufficient modulation of thyrotropin hormone by the neurohormone dopamine (DA) as the underlying mechanism o...

In studying the control of thyroidal phosphatide metabolism it was found that osmotic shock could stimulate the z2P incorporation into lipids of surviving thyroid slices. The nature of this effect and its relation to thyrotropin stimulation of phosphatide turnover was examined by first incubating calf thyroid slices in hypotonic or isotonic medium for 15 min and then transferring the slices to ...

AIMS To compare the prevalence of thyroid peroxidase antibodies in 25 children with autoimmune thyroid disorders and in 41 children and young adults with type 1 diabetes, and to test the prevalence of thyrotropin receptor antibodies. METHODS Two commercially available radioimmunoassays for antibodies to thyroid peroxidase, a commercially available agglutination test of particles coated with t...

Cold therapy is used to relieve pain and inflammatory symptoms. Humoral changes may account for the pain alleviation related to the cold exposures. The aim of the present study was to examine the effects of two types of cold therapy, winter swimming in ice-cold water (WS) and whole body cryotherapy (WBC), on the serum levels of the growth hormone, prolactin, thyrotropin and free fractions of th...

Resistance to thyroid hormone is an uncommon condition. We report the clinical and laboratory findings of a case with both resistance to thyroid hormone and, a reduced capacity to produce and respond to thyroid hormone. RTH is a disorder characterized by elevated circulating thyroid hormones, state of non-suppressed pituitary TSH secretion and refractoriness to hormone action in peripheral tiss...

The water soluble A subunit of the human TSH receptor has been shown to have an isoelectric point of 5. As both TSH and TSH receptor antibodies have isoelectric points in the region of 8-10, charge-charge interactions must be of major importance in the binding of hormone or antibody to the TSH receptor A subunit.