Li W, Cao Z, Yu W, Yao X, Ting R, Cheng F. Acute Kidney Injury Induced by Pneumoperitoneum Pressure Via a Mitochondrial Injury-dependent Mechanism in a Rabbit Model of Different Degrees of Hydronephrosis.
Urology 2019;
127:134.e1-134.e7. [PMID:
30790647 DOI:
10.1016/j.urology.2019.02.006]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 01/23/2019] [Accepted: 02/01/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE
To clarify the effect of mitochondrial injury during laparoscopic surgery of the kidney in different degrees of hydronephrosis in rabbit model.
METHODS
A total of 90 rabbits were randomly allocated into 3 groups (groups PN, PM, and PS, ie, rabbits without, with mild and with severe hydronephrosis, respectively). The rabbits in the PM group (n = 30) and PS group (n = 30) underwent surgical procedures that induced mild and severe left hydronephrosis, respectively. The rabbits in all the groups were then allocated into 5 subgroups and were subjected to intra-abdominal pressures of 0, 6, 9, 12, and 15 mmHg. Changes in the mitochondrial membrane potential and mitochondrial electron microstructure were observed. The apoptosis proteins cytochrome C, apoptosis-inducing factor, caspase-3, and caspase-9 were measured by western blot analysis.
RESULTS
As the degrees of hydronephrosis increased, histopathological changes such as the decrease in mitochondrial membrane potential and mitochondrial vacuolization along with increased expression of apoptosis proteins, cytochrome C, apoptosis-inducing factor, caspase-3 gained statistically significance at lower intra-abdominal pressures (In PN and PM groups at 15 mmHg, and in PS group at 9 mmHg; for all P <.01).
CONCLUSION
Mitochondrial injury plays an important role during acute kidney injury induced by pneumoperitoneal pressure in different degrees of hydronephrosis in the rabbit model.
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