Beschreibung:
Thyroid is a frequent target for endocrine effects of pesticides. Thyroglobulin (TG) and iodide uptake are crucial to thyroid hormone synthesis and may be targets of thyroid-disrupting chemicals. In our study, thyroid follicular FRTL-5 cells were treated with amitrole, an inhibitor of the thyroid peroxidase (TPO), and the effects on TG and total iodide uptake were observed. The results showed that 1 -100 mg/L amitrole had no marked effects on FRTL-5 cell proliferation and DNA synthesis. However, it significantly increased the transcription of tg gene and inhibited the total iodide uptake. And 10-100 mg/L amitrole significantly decreased TG in the culture medium. The data suggests amitrole may disrupt the expression and secretion of TG and iodide uptake.