Endocrine Abstracts

Vitamin D is a lipid-soluble hormone found in certain foods and synthesized from precursors in the skin when exposed to ultraviolet light. Vitamin D plays a critical role in bone metabolism and many cellular and immunological processes; and low levels have been associated with several chronic and infectious diseases. Vitamin D status is assessed by measuring the concentration of serum 25-hydroxy vitamin D (25(OH) D). Vitamin D deficiency is reported to be common worldwide, but...

Osteoprotogerin (OPG) and the receptor activators of nuclear factor-kβ (RANK) and nuclear factor-kβ ligand (RANKL) play an important role in bone metabolism. RANKL binds to RANK, which is expressed by osteoclasts, whereas OPG acts as its decoy receptor, blocking the RANK–RANKL interaction.The aim of our study was to evaluate bone turnover parameters (serum calcium, phosphorus, alkaline phosphatase, parathormone, osteocalcine, 24-...

Background: Hashimoto’s thyroiditis is a chronic autoimmune thyroiditis. It is the most common cause of primary hypothyroidism in adolescent period, via autoimmune thyroid tissue destruction and affecting 2% of the population. In this study we want to investigate the role of the cytokines such as IL-2, IL-12, TNF-α and IFN-γ in the pathogenesis of the disease and the changes of cytokine levels with the L-thyroxine treatment....

Thyroid hormones play an important role in bone metabolism. The potential action of prolonged levothyroxine therapy on bone mass reduction is stil a matter of debate.The aim of our one year prospective study was to elucidate whether longterm suppressive thyroid hormone therapy in patient with differentiated thyroid cancer (DTC) affects bone metabolism, osteoprotegerin (OPG) and soluble receptor activator of nuclear factor kβ ligand (sRANK-L) and is ...