... hor-mone-binding protein [15] (barbital inhibits binding of THs to transthyretin). Thus, the name was changed to‘thyroxine-binding prealbumin’ (TBPA). A decadeFig. 1. Five classes of TH-binding proteins.The ... protein; RBP, retinol-binding protein; T3, 3¢,3,5-triiodo-[L]-thyronine; T4, 3¢,5¢,3,5,-tetraiodo-[L]-thyronine; TBG, thyroxine-binding globulin; TBPA, thyroxine-binding prealbumin; TH, thyroidhormone; ... [18]. In the light of reports of decreased transthyretin synthesis and secretion in thebrains of ageing mammals [45], the role of transthyretin in the ageing brain requires further investigation.Visceral...