Endocrine Abstracts

Oxidative stress plays a crucial role in the pathogenesis of Graves’ Orbitopathy (GO), supporting the use of antioxidants in GO patients. Selenium has a beneficial effect, but other antioxidants have not been investigated. Here we evaluated several antioxidants in primary cultures of orbital fibroblasts from GO patients and control subjects. The following substances were tested: Vitamin C (Vit-C), N-Acetyl-l-Cysteine (NAC), melatonin (Mel), retinol (Ret), beta-carotene (b...

We studied 152 patients with Graves’ disease mild orbitopathy (GO), with a disease duration of <18 months, who had been euthyroid for at least 2 months after antithyroid drug or surgery, or 6 months after 131-Iodine. No patient received previous treatment for GO, except for local measures. Patients were randomized to receive either selenium (SE), an antioxidant (as selenium selenite, 100 (g b.i.d), or pentoxifylline (PF), an anti-inflammatory and antifibrotic agent (6...

Background: LC-MS/MS is recommended for accurately measuring circulating steroids. However, laboratories using LC-MS/MS adopt various pre-analytical and analytical strategies, and little is known about comparability of results. Whether different blood derivatives impact LC-MS/MS measurements is unclear, and the benefit of unifying the calibration system among laboratories was not tested.Aim: Comparisons of LC-MS/MS measurements of circulating aldosterone...