Thyroglobulin (Tg) present in the serum of normal individuals and patients with thyroid disorders could be partly newly synthesized non-iodinated Tg and partly Tg containing iodine and hormone residues originating from the lumen of thyroid follicles. With the aim of examining the contribution of the latter source of Tg to the elevation of serum Tg concentration in thyroid pathophysiological sit...

After its endocytosis from the colloid, some thyroglobulin (Tg) is transcytosed intact across thyrocytes, accounting in part for its presence in the circulation. We previously showed that megalin (gp330), an endocytic Tg receptor, mediates apical to basolateral Tg transcytosis. Here we investigated whether a portion of megalin remains combined with Tg after its transcytosis, using studies with ...

OBJECTIVE To examine the dynamics of oxidative stress in patients with hyperthyroidism before and during the treatment with methimazole using the measurement of conjugated dienes, malondialdehyde, and Schiff bases in blood serum. METHODS In eight female patients with diagnosed Graves disease and 8 healthy control subjects (7 females and one male) several parameters of oxidative stress (the le...

CONTEXT Thyroglobulin (Tg) may be a valuable indicator of improving thyroid function in children after salt iodization. A recently developed Tg assay for use on dried whole blood spots (DBS) makes sampling practical, even in remote areas. OBJECTIVE The study aim was to develop a reference standard for DBS-Tg, establish an international reference range for DBS-Tg in iodine-sufficient children,...

We previously determined that hamster cholesteryl ester transfer protein (CETP), unlike human CETP, promotes a novel one-way transfer of TG from VLDL to HDL, causing HDL to gain lipid. We hypothesize that this nonreciprocal lipid transfer activity arises from the usually high TG/cholesteryl ester (CE) substrate preference of hamster CETP. Consistent with this, we report here that ∼25% of the to...

D4-GDI, a Rho guanosine diphosphate (GDP) dissociation inhibitor, is preferentially expressed in hematopoietic tissues and binds to a small GTP-binding protein, Rho, and inhibits GDP dissociation from Rho. We identified point mutations in the D4-GDI gene in human leukemic cells. We therefore investigated the functions of D4-GDI and mutated D4-GDI in T cells. Transgenic mice (Tg) harboring human...

Serum thyroglobulin (Tg) and Tg antibody (TgAb) levels, together with neck ultrasonography and 131I whole-body scintigraphy (WBS), are diagnostic tools for postoperative follow-up of patients with differentiated thyroid carcinoma (DTC). Generally, good correlation is seen between Tg and WBS in follow-up studies for DTC after thyroid remnant ablation. Undetectable serum Tg with negative WBS resu...

Transplant glomerulopathy (TG) is a major cause of chronic graft dysfunction without effective therapy. Although the histological definition of TG is well characterized, the pathophysiological pathways leading to TG development are still poorly understood. Electron microscopy suggests an earlier appearance of TG and suggests that endothelial cell injury is the first sign of the disease. The pat...

The role of the complement receptor type 3 (CR3) on thioglycollate-elicited peritoneal macrophages (TG-PM) in the destruction of opsonized particles was studied. We found that sheep red blood cells (E) that were opsonized with an IgM monoclonal antiForssman antibody and complement (E-IgM-C) were lysed by TG-PM, whereas there was little lysis of E pretreated with either the antibody or the eompl...