International microbiology : the official journal of the Spanish Society for Microbiology · 2026
Transcutaneous electrical nerve stimulation changed the relative abundance of intestinal microbiota in rats with knee osteoarthritis: a potential treatment for KOA.
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Zhang Yang, Ma Tong, Chen Ran, Zhao Hong-Bin, Sun Yan
Аннотация
BACKGROUND: Knee osteoarthritis (KOA) is a common degenerative bone disease, and transcutaneous electrical nerve stimulation (TENS) is an alternative and complementary therapy (ACM). This study revealed the role of TENS in regulating the intestinal microbiota in KOA rats.
METHODS: This study concentrated on the intestinal microbiota of KOA rats which were treated with TENS for 1, 2, and 3 weeks. Three intensities of TENS were used to treat KOA rats, and the expressions of IL6/8, PI3K-AKT were measured. The intestinal microbiota was analyzed by 16 S rDNA sequencing.
RESULTS: Compared with the Model Control group, TENS could improve symptoms of KOA rats and inhibit the expressions of IL6/8 by down-regulating the PI3K-AKT expression. After 3 weeks of treatment with TENS, compared with the Model Control group, the abundances of Bacteroidetes, Bacteroidetes, and Thermodesulfobacteria increased in the TENS groups; the abundances of Ficmicutes, Campylobacter, and Verruca decreased in the TENS groups.
CONCLUSION: TENS could improve the histomorphology of knee and inhibit inflammation in KOA rats. After treatment with TENS, the intestinal microbiota gradually changed from 1,2,3 weeks and the abundance of them was different with three intensities of TENS. Further study will elucidate the underlying mechanisms of TENS in altering gut microbiota and the potential therapeutic applications of these intestinal microbiota for KOA.
METHODS: This study concentrated on the intestinal microbiota of KOA rats which were treated with TENS for 1, 2, and 3 weeks. Three intensities of TENS were used to treat KOA rats, and the expressions of IL6/8, PI3K-AKT were measured. The intestinal microbiota was analyzed by 16 S rDNA sequencing.
RESULTS: Compared with the Model Control group, TENS could improve symptoms of KOA rats and inhibit the expressions of IL6/8 by down-regulating the PI3K-AKT expression. After 3 weeks of treatment with TENS, compared with the Model Control group, the abundances of Bacteroidetes, Bacteroidetes, and Thermodesulfobacteria increased in the TENS groups; the abundances of Ficmicutes, Campylobacter, and Verruca decreased in the TENS groups.
CONCLUSION: TENS could improve the histomorphology of knee and inhibit inflammation in KOA rats. After treatment with TENS, the intestinal microbiota gradually changed from 1,2,3 weeks and the abundance of them was different with three intensities of TENS. Further study will elucidate the underlying mechanisms of TENS in altering gut microbiota and the potential therapeutic applications of these intestinal microbiota for KOA.