Tianjin Medical Journal ›› 2024, Vol. 52 ›› Issue (4): 350-355.doi: 10.11958/20231141

• Experimental Research • Previous Articles     Next Articles

Influence of Yiqi Shengqing recipe on neuron pyroptosis in ischemic stroke rats by regulating HIF-1α/NLRP3 signal pathway

WANG Yue1(), QUAN Xingmiao1, WANG Yu2, SONG Chunxia1,(), SHAO Yue3, XU Liwei1   

  1. 1 Department of Traditional Chinese Medicine, the Affiliated Hospital of Chengde Medical University Chengde 067000, China
    2 Department of Acupuncture and Massage, Chengde Hospital of Traditional Chinese Medicine
    3 Department of Orthopedics and Traumatology, the Affiliated Hospital of Chengde Medical University
  • Received:2023-08-01 Revised:2023-10-30 Published:2024-04-15 Online:2024-04-19

Abstract:

Objective To investigate the influence of Yiqi Shengqing recipe on neuronal pyroptosis in ischemic stroke rats by regulating hypoxia inducible factor-1α (HIF-1α)/NOD-like receptor thermal protein domain associated protein 3 (NLRP3) signal pathway. Methods SD rats were randomly divided into the sham operation group (S group), the model group (M group), the low, medium and high dose (3.465, 6.930 and 13.860 g/kg) Yiqi Shengqing recipe groups, and high-dose Yiqi Shengqing recipe+HIF-1α activator DMOG (13.860 g/kg Yiqi Shengqing recipe+40 mg/kg DMOG) group, 15 animals in each group. The stroke model was constructed by thread plug method. After successful modeling, neural function defects were evaluated including TTC staining for evaluating the volume of cerebral infarction, ELISA for detecting the serum interleukin (IL)-1β and IL-18 levels, HE staining for detecting pathological changes of ischemic cortex, TUNEL staining for detecting neuronal apoptosis and Western blot assay for detecting the expression of pyroprotein and HIF-1α/NLRP3 pathway protein. Results Compared with the S group, the neurological deficit score, infarct volume, IL-1β, IL-18 contents, apoptosis rate of nerve cells, GasderminD-N (GSDMD-N), Caspase-1, HIF-1α and NLRP3 protein levels were increased in the M group (P<0.05). Compared with the M group, the neurological defect score, infarct volume, IL-1β, IL-18 contents, neuronal apoptosis rate, GSDMD-N, Caspase-1, HIF-1α and NLRP3 protein levels were decreased in the low, medium and high dose Yiqi Shengqing recipe groups (P<0.05). DMOG attenuated the improvement effect of high-dose Yiqi Shengqing recipe on neuronal death in ischemic stroke rats. Conclusion Yiqi Shengqing recipe may reduce the neuronal pyroptosis in ischemic stroke rats by down-regulating HIF-1α/NLRP3 signal pathway.

Key words: stroke, hypoxia-inducible factor 1, alpha subunit, NLR family, pyrin domain-containing 3 protein, neurons, pyroptosis, Yiqi Shengqing recipe

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