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Abstract Title:

Effect of Electroacupuncture in"Zusanli"and"Kunlun"Acupoints on TLR4 Signaling Pathway of Adjuvant Arthritis Rats.

Abstract Source:

Am J Ther. 2016 Aug 29. Epub 2016 Aug 29. PMID: 27574922

Abstract Author(s):

Zhe-Qing Dong, Ji Zhu, De-Zhao Lu, Qin Chen, Ying-Ling Xu

Article Affiliation:

Zhe-Qing Dong

Abstract:

BACKGROUND: Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease. Previous study suggested that toll-like receptor (TLR) signaling pathway contributes to the development and progression of RA. In recent years, acupuncture has become one of the most vital treatments of arthralgia. But little is known about the mechanisms of improving RA by acupuncture.

STUDY QUESTION: The study studied the effect of electroacupuncture in"Zusanli"and"Kunlun"acupoints on the expression of TLR4, myeloid differentiation factor 88 (MYD88), and NF-κB in adjuvant arthritis rats to clarify the molecular mechanism of acupuncture of RA.

STUDY DESIGN: A rat model of adjuvant arthritis was established with injection of 0.1 mL Freund complete adjuvant in the right hindlimb footpad. We next punctured the Zusanli and Kunlun acupoints with 0.25× 40-mm acupuncture needles to 5-mm depth. Then, we performed electroacupuncture treatment for 28 days with frequency of 2 Hz and intensity of 2 mA, once a day and 30 minutes each time.

MEASURES AND OUTCOMES: Arthritis index and paw swelling were measured every week. FQ-PCR and western blot were used to detect the expression of TLR4, MYD88, and NF-κB.

RESULTS: Paw swelling of rats injected with Freund complete adjuvant was more serious than that of the normal rats, which illustrated the successful establishment of adjuvant arthritis rat model. After treatment for 14 days, the paw swelling and joint symptoms score decreased, paw tissue inflammation eased in the rats of treatment group compared with the model group during the same period. After treatment for 28 days, the expression of TLR4, MYD88, and NF-κB in the ankle bone tissues decreased at both mRNA and protein levels.

CONCLUSIONS: Stimulation with electric needle in Zusanli and Kunlun acupoints can reduce the expression of TLR4, MYD88, and NF-κB, which play an important role in treatment of adjuvant arthritis.

Study Type : Animal Study

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Sayer Ji
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