2023: Sesamin alleviated fluoride-induced thyroid endocrine disruption in zebrafish (Danio rerio)

All adverse health effects of fluoride are related to thyroid hormone metabolism.
Post Reply
admin
Site Admin
Posts: 5768
Joined: Tue Jan 18, 2005 10:25 pm

2023: Sesamin alleviated fluoride-induced thyroid endocrine disruption in zebrafish (Danio rerio)

Post by admin »

NOTE: Zebrafish are widely used in thyroid toxicity assessments of endocrine-disrupting chemicals (ECDs). (See: NTP's SEAZIT program).

As of 2017, almost all of the components of the zebrafish thyroid axis had been characterized and found to be structurally and functionally comparable with those of higher vertebrates (Marelli & Parsani, 2017).


Wang T, Wu S, Chen J, Li L, Cao J - "Sesamin alleviated fluoride-induced thyroid endocrine disruption in zebrafish (Danio rerio)" Aquat Toxicol 261:106625 (2023) doi: 10.1016/j.aquatox.2023.106625
https://www.sciencedirect.com/science/a ... 5X2300228X

Abstract

Previous studies have indicated that fluoride could induce the damage of thyroid. However, the effects of sesamin on thyroid endocrine function in zebrafish exposed to fluoride have not been clarified. This study was designed to investigate the alleviating effects of sesamin on thyroid endocrine disruption in zebrafish induced by fluoride. The results showed that sesamin significantly improved growth performance in adults exposed to fluoride; decreased significantly the mortality rate, increased remarkably the hatching rate and body length, and alleviated the phenomenon of spinal curvature, yolk cyst and pericardial cyst to varying degrees in fluoride-exposed embryos and larvae. Sesamin alleviated remarkably the damage of thyroid tissues in fluoride-exposed adults. Moreover, sesamin obviously reduced oxidative stress and improved the imbalance of thyroid hormones in fluoride-exposed adults or larvae. In addition, sesamin reversed the expression of endocrine-related genes of thyroid in fluoride-exposed adults or larvae. This indicates that sesamin can affects the thyroid tissue structure, hormone levels, and the expression of endocrine-related genes of thyroid, thus alleviating the thyroid endocrine disorder induced by fluoride and improving the growth and development. This study also demonstrates that sesamin can be a promising novel treatment for thyroid endocrine disorder caused by fluoride.
Post Reply