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Acupuncture ameliorates inflammation by regulating gut microbiota in acute ischemic stroke
Haoyue Yan1, Yini Hua1, Jinxia Ni1
1Department of Acupuncture and Moxibustion, Dongzhimen Hospital of Beijing University of Chinese Medicine, China.
Background:
Acute ischemic stroke(AIS) is a major life-threatening disease.Some studies have found that AIS may be related to gut flora and immune responses. Acupuncture is used widely in the treatment of AIS. However its relevant mechanism is unclear enough. Therefore, in this study, we wanted to confirm that acupuncture was treating AIS through gut flora and immune response.
Methods:
We randomly divided 18 rats into equal three groups, including Sham, Middle Cerebral Artery Occlusion (MCAO) and Acupuncture.Rats in the Acupuncture group for a continuous period of three days after surgery. Neurological deficits were assessed using Longa's method, and detection of intestinal flora by 16s rRNA gene sequencing, determination of SCFAs by gas chromatography-mass spectrometry, detection of HDAC and inflammatory cytokines by elisa assay, detection of Th17 and Treg cells by flow cytometry and, observation of pathological and morphological changes in brain and colon tissues by HE staining.
Results:
Acupuncture improved the degree of impaired neurological function in MCAO rats and regulated the type and abundance of intestinal bacteria, increased SCFAs of MCAO rats, decreased HDAC1 and HDAC2, modulated the Th17/Treg imbalance, reduced the level of inflammatory factors in the peripheral blood and altered the pathology of the intestine and brain.
Conclusion:
Acupuncture repaired neurologic deficits after AIS and may be associated with an immune-inflammatory response mediated by gut microbiota.
