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Zhang T, Lv J, Liu ZY, Lei QL, Jiang ZF, Sun XX, Yue X, Li X, Zhu KL, Yang YK, Luo L, Cao X. P2X7 receptor is essential for ST36-attenuated cardiac fibrosis upon beta-adrenergic insult. Purinergic Signal 2024:10.1007/s11302-024-10009-y. [PMID: 38676825 DOI: 10.1007/s11302-024-10009-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/15/2024] [Indexed: 04/29/2024] Open
Abstract
P2X7 receptor (P2X7R) plays an important role in modulating inflammation and fibrosis, but information is limited whether Zusanli (ST36) can inhibit inflammation and fibrosis by regulating P2X7R. Isoprenaline at 5 mg/kg was subcutaneously injected to wild-type and P2X7R knockout mice for 7 days, while treatment groups received electroacupuncture (EA) stimulation at ST36 for 7 sessions. Following 7-session treatment, Masson's trichrome staining was performed to assess the fibrosis. Morphology, electrocardiogram, and echocardiography were carried out to evaluate the cardiac function and structure. Western blotting, hematoxylin and eosin staining, immunohistochemistry, and biochemical analysis of inflammatory cytokine and transmission electron microscopy were carried out to characterize the effect of ST36 on inflammation. P2X7R was overexpressed in ISO-treated mice. EA at ST36, but not at non-points, reduced ISO-induced cardiac fibrosis, increases in HW/BW, R+S wave relative to mice in ISO groups. In addition, EA at ST36 downregulated ISO-upregulated P2X7R and NLRP3 in ventricle. Moreover, EA reduced cytokines of IL-1β, IL-6, and IL-18 in serum, and inhibited foam cell gathering, inflammatory cell infiltration, and autophagy. However, EA at ST36 failed to attenuate the cardiac fibrosis and hypertrophy in P2X7R knockout mice. In conclusion, EA at ST36 attenuated ISO-induced fibrosis possibly via P2X7R.
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Affiliation(s)
- Ting Zhang
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Jing Lv
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Zhong-Yue Liu
- School of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, Sichuan, China
| | - Qiu-Lian Lei
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan, China
| | - Ze-Fei Jiang
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Xiao-Xiang Sun
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Xing Yue
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Xuan Li
- School of Health and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Ke-Li Zhu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China
| | - Yun-Kuan Yang
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan, China
| | - Ling Luo
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China.
| | - Xin Cao
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, 611137, Sichuan Province, China.
- Acupuncture and Chronobiology Key Laboratory of Sichuan Province, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
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