Study on the neuroprotective effect and mechanism of Tianma Gouteng Decoction on combining rat model of Hyperactivity of Liver Yang and MCAO based on autophagic flux and CXCL12/CXCR4 axis

doi:10.12092/j.issn.1009-2501.2025.08.004

Abstract

Abstract: AIM: To investigate autophagic status in ischemic stroke with Liver Yang Hyperactivity and the mechanism of Tianma Gouteng Decoction (TMGTD). METHODS: SD rats were divided into sham, model, TMGTD high/medium/low-dose (20.52/10.26/5.13 g·kg^-1·d^-1), and Nimodipine (30 mg·kg^-1·d^-1) groups. A Liver Yang Hyperactivity and cerebral ischemia-reperfusion model was established using Fuzi Decoction (2 g·kg^-1·d^-1) and thread-occlusion. After 21 days of Fuzi decoction pretreatment, rats received daily drug administration for 12 days. Syndrome indicators (irritability, 24-hour water intake, 24-hour urine volume, facial temperature) were recorded, plasma NE, E, cAMP, and cGMP were measured by ELISA, neurological function was assessed using Zea Longa and mNSS methods, brain histopathology was evaluated by HE staining, protein expression of soluble/insoluble p62 and LC3B was detected by Western blot, autophagy-related genes were analyzed by PCR array, additionally, mRNA and protein levels of CXCR4 and CXCL12 were measured by qRT-PCR and Western blot. RESULTS: Compared to the sham group, the model group showed increased irritability, 24-hours water intake, 24-hours urine volume, facial temperature, and level of NE, E, cGMP (P<0.01), neurological scores (P<0.01), LC3B-II, insoluble p62, CXCR4, CXCL12 expression (P<0.01), but decreased soluble p62 (P<0.01). TMGTD groups exhibited reduced irritability, water intake, urine volume, facial temperature, NE, E, cGMP (P<0.05, P<0.01), neurological scores (P<0.05, P<0.01), p62 expression (P<0.01), alongside increased LC3B-II (P<0.01) and improved cortical pathology. TMGD also reversed dysregulated autophagy-apoptosis genes (CXCR4, Lamp1, Tgfb1, APP, Rab24) and reduced CXCR4, CXCL12 expression (P<0.01). CONCLUSION:In the Liver Yang Hyperactivity and cerebral ischemia-reperfusion model, autophagy genes were activated but flux was impaired, and Tianma Gouteng Decoction may protect by restoring autophagic flux and inhibiting the CXCL12/CXCR4 axis.

Key words: Tianma Gouteng Decoction, ischemic stroke, hyperactivity of liver Yang, autophagic flux, PCR array, CXCL12/CXCR4 axis

CLC Number:

WANG Xiaoli, SHAO Jing, ZHANG Wei, TIAN Ping, ZHANG Xuexia, LIU Changhe, LI Kaiyan, YANG Dan, GUO Xiaoyan. Study on the neuroprotective effect and mechanism of Tianma Gouteng Decoction on combining rat model of Hyperactivity of Liver Yang and MCAO based on autophagic flux and CXCL12/CXCR4 axis[J]. Chinese Journal of Clinical Pharmacology and Therapeutics, 2025, 30(8): 1037-1048.

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