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P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy

  • Authors:
    • Yanji Zhu
    • Min Liu
    • Wenlong Xun
    • Keliang Li
    • Xiangji Niu
  • View Affiliations / Copyright

    Affiliations: Department of Pediatrics, People's Hospital of Rizhao Affiliated to Jining Medical University, Rizhao, Shandong 276800, P.R. China
    Copyright: © Zhu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 161
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    Published online on: December 21, 2021
       https://doi.org/10.3892/etm.2021.11084
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Abstract

Activation of the purinergic P2X7 receptor (P2X7R) has been associated with the development of experimental nephritis. Therefore, the current study aimed to explore the mechanism of P2X7R in renal injured mice with adriamycin (ADR) nephropathy. The protective effect of a P2X7R antagonist on the kidneys of mice with ADR nephropathy was also evaluated. Nephropathy was induced by a single intravenous injection of ADR (10.5 mg/kg). A total of 6 h before the model was established, the P2X7R antagonist A438079 (100, 200 and 300 µmol/kg) was injected into the mice, which was subsequently administered daily for 1 week by intraperitoneal injection. Subsequently, all mice were sacrificed, after which blood, 24 h‑urine and the kidneys were collected. The levels of albumin (ALB) and total cholesterol (TC) in the serum, along with urine protein content at 24 h were determined using an automatic biochemical analyzer. The levels of IL‑1β and IL‑18 were additionally detected in the renal tissues by ELISA. Moreover, the expression of P2X7R, oxidized (ox)‑low density lipoprotein (LDL), C‑X‑C motif chemokine ligand 16 (CXCL16), Bax, caspase‑3 and NLRP3 in renal tissues was detected by immunohistochemistry. Apoptosis in the renal tissues was observed using the TUNEL assay. The results demonstrated that compared with the control group, decreased weight, increased proteinuria, decreased serum ALB and increased serum TC was observed in the ADR group. The expression of IL‑1β, IL‑18, P2X7R, ox‑LDL, CXCL16, Bax, caspase‑3 and NLRP3, as well as cellular apoptosis in the renal tissues of the ADR group, was significantly increased in the ADR group compared with the control. However, compared with the ADR group, the changes in all indices in the ADR + A438079 groups were attenuated. Overall, P2X7R, ox‑LDL and CXCL16 may be associated with ADR nephropathy, while inhibition of P2X7R may reduce the expression of ox‑LDL by downregulating the CXCL16 pathway to alleviate kidney injury in mice with ADR nephropathy. Furthermore, activated P2X7R may promote the release of inflammatory cytokines IL‑1β and IL‑18 through the downstream P2X7R/NLRP3 pathway and upregulate the expression of Bax and caspase‑3 to promote apoptosis, which participates in the process of ADR nephropathy. Inhibiting P2X7R may also reduce the release of IL‑1β and IL‑18 by downregulating the P2X7R/NLRP3 pathway, downregulating the expression of Bax and caspase‑3, and reducing apoptosis, thereby alleviating kidney injury in mice with ADR nephropathy.
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Copy and paste a formatted citation
Spandidos Publications style
Zhu Y, Liu M, Xun W, Li K and Niu X: P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy. Exp Ther Med 23: 161, 2022.
APA
Zhu, Y., Liu, M., Xun, W., Li, K., & Niu, X. (2022). P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy. Experimental and Therapeutic Medicine, 23, 161. https://doi.org/10.3892/etm.2021.11084
MLA
Zhu, Y., Liu, M., Xun, W., Li, K., Niu, X."P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy". Experimental and Therapeutic Medicine 23.2 (2022): 161.
Chicago
Zhu, Y., Liu, M., Xun, W., Li, K., Niu, X."P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy". Experimental and Therapeutic Medicine 23, no. 2 (2022): 161. https://doi.org/10.3892/etm.2021.11084
Copy and paste a formatted citation
x
Spandidos Publications style
Zhu Y, Liu M, Xun W, Li K and Niu X: P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy. Exp Ther Med 23: 161, 2022.
APA
Zhu, Y., Liu, M., Xun, W., Li, K., & Niu, X. (2022). P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy. Experimental and Therapeutic Medicine, 23, 161. https://doi.org/10.3892/etm.2021.11084
MLA
Zhu, Y., Liu, M., Xun, W., Li, K., Niu, X."P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy". Experimental and Therapeutic Medicine 23.2 (2022): 161.
Chicago
Zhu, Y., Liu, M., Xun, W., Li, K., Niu, X."P2X7R antagonist protects against renal injury in mice with adriamycin nephropathy". Experimental and Therapeutic Medicine 23, no. 2 (2022): 161. https://doi.org/10.3892/etm.2021.11084
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