A trial for improving thyroid gland dysfunction in rats by using a marine organism extract

Area of Science:

• Environmental toxicology
• Endocrinology
• Marine natural products

Background:

• Environmental stress factors, such as fluoride, can negatively impact endocrine system function.
• The hypothalamus-pituitary-thyroid (HPT) axis is crucial for regulating metabolism and is sensitive to environmental changes.
• Thyroid dysfunction is a growing health concern linked to various environmental exposures.

Purpose of the Study:

• To investigate the effects of sodium fluoride (NaF) on the HPT axis in female rats.
• To evaluate the potential therapeutic effects of Arca noae water extract on NaF-induced thyroid dysfunction.
• To assess the impact of Arca noae extract on the HPT axis in normal conditions.

Main Methods:

• Thyroid dysfunction was induced in female rats using NaF (40 mg/kg/day for one month).
• Arca noae water extract (300 mg/kg) was co-administered to assess its protective effects.
• Serum biochemical parameters (triglycerides, total protein, albumin, TSH, T4, T3) and histological changes were analyzed.

Main Results:

• NaF exposure significantly altered lipid profiles, protein levels, and thyroid hormone levels (TSH, T4, T3).
• Arca noae extract partially improved protein and lipid profiles but did not fully normalize thyroid hormones, with persistent TSH elevation.
• Histological examination revealed detrimental effects of fluoride on thyroid tissue, even in the treated group.

Conclusions:

• Fluoride acts as a harmful environmental stressor, potentially causing permanent damage to the HPT axis.
• Arca noae extract demonstrated limited efficacy in mitigating NaF-induced thyroid dysfunction.
• Further research is needed to understand the long-term consequences of fluoride exposure on thyroid health.