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06:08
Establishment and Characterization of Patient-Derived Xenograft Models of Anaplastic Thyroid Carcinoma and Head and Neck Squamous Cell Carcinoma
Published on: June 2, 2023
Selenium analogues of antithyroid drugs--recent developments
Gouriprasanna Roy1, Govindasamy Mugesh
1Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
Chemistry & Biodiversity
|March 22, 2008
Summary
New selenium-containing antithyroid drugs show potential as antioxidants. These compounds may protect thyroid cells from oxidative damage and offer a novel treatment for hyperthyroidism.
Area of Science:
- Endocrinology
- Medicinal Chemistry
- Pharmacology
Background:
- Thyroxine (T4) synthesis involves thyroid peroxidase (TPO) and hydrogen peroxide (H2O2).
- Hyperthyroidism results from TSH receptor overstimulation and is treated with antithyroid drugs like methimazole (MMI).
- Oxidative stress can damage thyroid cells.
Purpose of the Study:
- To review the biological activities of S/Se derivatives of methimazole.
- To explore their potential as antioxidants and therapeutic agents for hyperthyroidism.
Main Methods:
- Review of existing literature on methimazole derivatives.
- Analysis of the inhibitory mechanisms of S/Se compounds on lactoperoxidase (LPO).
- Evaluation of the role of H2O2 degradation by selenium analogues.
Main Results:
- Methimazole derivatives with S/Se substitutions can inhibit LPO.
- Selenium analogue MSeI inhibits LPO by reducing H2O2, not direct enzyme interaction.
- Degradation of H2O2 by Se analogues may offer antioxidant protection to thyroid cells.
Conclusions:
- Selenium analogues of antithyroid drugs possess antioxidant properties.
- These compounds can reversibly inhibit TPO by affecting H2O2 levels.
- They represent a promising new strategy for hyperthyroidism treatment and thyroid protection.
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