... responsible for the decrease of thyroid hormone biosynthesis in primary cultures in the presence of insulin In addition, our data suggest that insulin stimulates cell division, in bovine thyroid cultures, ... significant increase in concentration of the peroxidase inhibitor by the action of insulin, during 48 h, in thyroid primary cultures with 0.1% fetal bovine serum, totally depleted of the hormone, 48 ... results, without discarding the anti-apoptotic effect of insulin [24], demonstrate that both insulin and the peroxidase inhibitor, in the absence of TSH, stimulate cell growth of thyroid cultures Conversely,...