Key Finding
Yiqi Huatan Huoxue recipe reduced thyroid damage and autoantibodies in AIT mice by upregulating SIRT1 and inhibiting NLRP3/AIM2-mediated pyroptosis and apoptosis pathways.
Researchers investigated how a traditional Chinese herbal formula called Yiqi Huatan Huoxue recipe affects autoimmune thyroiditis (AIT), a common condition where the immune system attacks the thyroid gland. This study is important because AIT cases have increased dramatically in recent decades, and while this herbal formula has been used clinically with good results, scientists wanted to understand exactly how it works.
The researchers used 40 female mice that were divided into four groups: normal controls, untreated AIT models, those receiving the herbal formula, and those receiving selenium (a standard Western treatment). They induced thyroid inflammation in the mice and then treated them for 8 weeks, examining thyroid tissue damage, antibody levels, and specific cellular pathways involved in cell death and inflammation.
The results showed that mice with AIT had severe thyroid damage, high levels of thyroid antibodies, and increased inflammatory markers. Treatment with the Yiqi Huatan Huoxue recipe significantly improved thyroid structure, reduced antibody levels, and decreased inflammation. The herbal formula appeared to work by activating a protein called SIRT1, which then reduced harmful inflammatory processes called pyroptosis (a type of inflammatory cell death) and apoptosis (programmed cell death).
For patients with autoimmune thyroiditis, this research suggests that traditional Chinese herbal medicine may offer therapeutic benefits by targeting multiple inflammatory pathways simultaneously. The formula reduced both tissue damage and the autoimmune response in this animal model. While these are promising findings, patients should remember this was an animal study, and human clinical trials would be needed to confirm these effects. Those interested in exploring Traditional Chinese Medicine for thyroid conditions should consult a licensed acupuncturist or herbalist with appropriate training and credentials.
This study examined the mechanism of Yiqi Huatan Huoxue recipe in treating autoimmune thyroiditis using NOD.H-2h4 mice (n=40, divided into 4 groups of 10). AIT was induced with 0.05% sodium iodide over 8 weeks, followed by 8 weeks of treatment. Outcome measures included histopathology, serum TGAb and TPOAb levels, and expression of pyroptosis/apoptosis pathway markers via qRT-PCR, Western blot, and immunohistochemistry.
Results demonstrated that the herbal formula significantly reduced thyroid structural damage, lymphocytic infiltration, and autoantibody levels compared to untreated controls. Mechanistically, treatment upregulated SIRT1 expression and downregulated the NF-κB/NLRP3 signaling axis, reducing both NLRP3 and AIM2-mediated pyroptosis. Expression of pyroptotic markers (caspase-1, GSDMD, IL-1β) and apoptotic markers (Bax, caspase-3) decreased significantly, while anti-apoptotic Bcl-2 increased.
Clinical implications: This formula may address AIT pathology through multi-pathway modulation of inflammatory cell death mechanisms. The SIRT1/NF-κB/NLRP3 axis represents a potential therapeutic target for herbal intervention in autoimmune thyroid conditions, warranting clinical investigation in human subjects.
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