INTRODUCTION Endogenous thyroid-stimulating hormone-stimulated thyroglobulin collected after total thyroidectomy is a useful predictor of better prognosis in patients with differentiated thyroid carcinomas in general, but studies with microcarcinomas are scarce. OBJECTIVE To assess whether the first postoperative stimulated thyroglobulin measurement is a prognostic factor in patients with mic...

1. Crystalline chloroperoxidase is effective in catalyzing the iodination of tyrosine or thyroglobulin when supplemented with HzOz, or with the H20z-generating system, glucoseglucose oxidase. The iodination reaction is very rapid at low concentrations of iodide (5 X 10-5 M), and at low concentrations of tyrosine (1 X 10V4 M) or thyroglobulin (0.33 mg per ml). 2. Iodide is rapidly bound as 3-iod...

Thyroglobulin may be defined as the iodine-containing protein of the thyroid gland which has a sedimentation coefficient of 4o.w = 19 S, an electrophoretic mobility at pH 8.6 of approximately 5 x 10F5 cm2 volt-l set-1, and a steep salting out curve at about 38% ammonium sulfate saturation at neutral pH (1). Although other iodoproteins, both soluble in neutral salt and attached to cell particles...

Liver Disease-Bouchier et al. MEDICAL JOURNAL gamma-globulin and that, in liver disease, the antibody is frequently a macroglobulin, while in D.L.E. it is predominantly a 7S gamma-globulin (Weir and Holborow, 1962). Positive A.N.F. tests were found in the absence of a positive L. Mackay and Wood, 1962). Unlike Calabresi and Greenberg's (1960) findings, antinuclear antibodies were not found in t...

BACKGROUND Subclinical hypothyroidism is defined as an elevated thyroid-stimulating hormone level with a normal thyroxin level without signs or symptoms of hypothyroidism. Although it is well accepted that overt hypothyroidism has a deleterious impact on pregnancy, recent studies indicate that subclinical hypothyroidism may affect maternal and fetal health. Studies suggest an association betwee...

Thyroglobulin is a large glycosylated protein (MW 660000 daltons) which is synthesised and secreted by the thyroid cell into the follicular lumen. In the thyroglobulin molecule the iodotyrosines undergo oxidative coupling to form the iodothyronines thyroxine (T4) and triiodothyronine (T3). Production of thyroid hormones results from micropinocytosis of iodinated thyroglobulin from the colloid i...

We compared two commercial assays for measurement of serum thyroglobulin [Nuclear Medical Systems (NMS) and "CIS" (Damon Diagnostics)] with each other and with one developed at Stanford (J Clin Endocrinol Metab 49:557-564, 1979). The NMS assay is a competitive-binding RIA, the CIS and Stanford assays are two-site immunoradiometric assays. The kit standards varied in thyroglobulin concentration....

Thyroid function depends on processing of the prohormone thyroglobulin by sequential proteolytic events. From in vitro analysis it is known that cysteine proteinases mediate proteolytic processing of thyroglobulin. Here, we have analyzed mice with deficiencies in cathepsins B, K, L, B and K, or K and L in order to investigate which of the cysteine proteinases is most important for proteolytic p...