Open Access

High-pressure carbon dioxide pneumoperitoneum induces oxidative stress and mitochondria-associated apoptotic pathway in rabbit kidneys with severe hydronephrosis

  • Authors:
    • Sheng Zhao
    • Wei Li
    • Fan Cheng
    • Ting Rao
    • Weimin Yu
    • Yuan Ruan
    • Run Yuan
    • Xiaobing Yao
    • Jinzhuo Ning
  • View Affiliations

  • Published online on: November 8, 2018     https://doi.org/10.3892/ijmm.2018.3986
  • Pages: 305-315
  • Copyright: © Zhao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The primary aim of the present study was to investigate the potential effect of high‑pressure carbon dioxide (CO2) pneumoperitoneum on kidneys with severe hydronephrosis and to investigate the possible underlying mechanism. A total of 18 rabbits underwent a surgical procedure inducing severe hydronephrosis. Rabbits were then divided at random into three groups (n=6 each) and subjected to intraabdominal pressure of 0, 8 or 18 mmHg, respectively. CO2 inflation lasted for 90 min in the pneumoperitoneum groups. Oxidative stress was assessed by measurements of reactive oxygen species (ROS). Activation of apoptosis was analyzed by western blot analysis of B‑cell lymphoma 2 (Bcl‑2), Bcl‑2‑associated x protein (Bax), cytochrome c (Cyt c), caspase‑3 and caspase‑9 levels. In addition, TUNEL assay, hematoxylin and eosin (H&E) staining, measurement of mitochondrial membrane potential (MMP) and detection of changes to kidney ultramicrostructure were performed. In the 0 and 8 mmHg groups, all results were normal and similar. However, in the 18 mmHg group, the kidneys suffered oxidative damage and mitochondrial injuries, and increased ROS levels, lower MMP and mitochondrial vacuolization were observed. Furthermore, the mitochondrial/caspase‑dependent pathway of apoptosis was activated, as indicated by the apoptotic index, and the expression levels and translocation of Bax, Bcl‑2, Cyt c, caspase‑3 and caspase‑9. Therefore, it is concluded that high‑pressure CO2 pneumoperitoneum induces oxidative damage and apoptosis in rabbit kidneys with severe hydronephrosis, which is associated with the mitochondrial apoptotic pathway.
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January 2019
Volume 43 Issue 1

Print ISSN: 1107-3756
Online ISSN:1791-244X

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APA
Zhao, S., Li, W., Cheng, F., Rao, T., Yu, W., Ruan, Y. ... Ning, J. (2019). High-pressure carbon dioxide pneumoperitoneum induces oxidative stress and mitochondria-associated apoptotic pathway in rabbit kidneys with severe hydronephrosis. International Journal of Molecular Medicine, 43, 305-315. https://doi.org/10.3892/ijmm.2018.3986
MLA
Zhao, S., Li, W., Cheng, F., Rao, T., Yu, W., Ruan, Y., Yuan, R., Yao, X., Ning, J."High-pressure carbon dioxide pneumoperitoneum induces oxidative stress and mitochondria-associated apoptotic pathway in rabbit kidneys with severe hydronephrosis". International Journal of Molecular Medicine 43.1 (2019): 305-315.
Chicago
Zhao, S., Li, W., Cheng, F., Rao, T., Yu, W., Ruan, Y., Yuan, R., Yao, X., Ning, J."High-pressure carbon dioxide pneumoperitoneum induces oxidative stress and mitochondria-associated apoptotic pathway in rabbit kidneys with severe hydronephrosis". International Journal of Molecular Medicine 43, no. 1 (2019): 305-315. https://doi.org/10.3892/ijmm.2018.3986