Mechanism analysis of Tongqiao Yizhi decoction in treating vascular dementia rats by brain tissue untargeted metabonomics and fecal 16S rRNA gene sequencing.

Objective: To analyze the mechanism of Tongqiao Yizhi decoction (TQYZD, ) in treating vascular dementia (VaD) rats using brain tissue untargeted metabonomics and fecal 16S rRNA gene sequencing.

Methods: The chemical composition of TQYZD was analyzed by ultra-high performance liquid chromatography-high resolution mass spectrometry. The effects of TQYZD on VaD rats were evaluated by water maze test, hematoxylin-eosin staining, enzyme-linked immunosorbent assay and Western blot.

Tongqiao Yizhi granule repress the nuclear factor kappa-b/nucleotide oligomerization domain-like receptors 3/caspase-1 pyroptosis pathway in the hippocampus to counter vascular dementia in rats.

Objective: To explore the mechanism by which Tongqiao Yizhi granule (, TQYZKL) intervenes pyroptosis to treat vascular dementia (VaD) in a rat model.

Methods: The rat model of VaD was established by two-vessel occlusion (2VO). The rats were randomly divided into Sham group, Model group, Nimodipine group, TQYZKL (6.