Introduction: The Objective is to explore the mechanism by which Buzhong Yiqi decoction improves inflammatory damage in autoimmune thyroiditis (AIT) mice based on the Wnt5a/ β-catenin signaling pathway. Methods: Sixty 8-week-old NOD.H-2h4 mice of SPF grade were selected and randomly divided into six groups: control group, model group, Buzhong Yiqi decoction low, middle, and high-dose groups (4.78, 9.56, 19.12 g·kg-1), and Western medicine group (selenium yeast tablets, 3.033×10-5 g·kg-1), with ten mice in each group. All groups of AIT model mice were allowed to drink a 0.05% sodium iodide solution freely for 8 weeks to establish the AIT model, while the control group drank distilled water freely. ELISA, HE staining, Real-time PCR, and Western Blot were used to assess serum antibodies, thyroid pathology, and expression levels of Wnt5a, β-- catenin, PPAR, GSK-3β, IL-1β, and IL-6. Results: The model group showed increased TgAb and TPOAb levels (P< 0.01), lymphocyte infiltration, and altered expression of Wnt5a, β-catenin, PPAR, GSK-3β, IL-1β, and IL-6 (P< 0.01). Buzhong Yiqi decoction groups and Western medicine groups significantly reduced these effects, indicating improved thyroid function and inflammation reduction. Discussion: Buzhong Yiqi decoction modulates the Wnt5a/β-catenin pathway, suggesting a potential therapeutic approach for AIT by reducing inflammation and restoring thyroid function. Conclusion: Buzhong Yiqi decoction can effectively improve AIT inflammatory damage, and the modulation of the Wnt/β-catenin signaling pathway may be one of its intervention mechanisms.
Gao et al. (Mon,) studied this question.