Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats

2020
Authors
Kovačević, Sanjin
Ivanov, Milan

Miloradović, Zoran

Brkić, Predrag
Vajić, Una-Jovana

Životić, Maja

Mihailović-Stanojević, Nevena

Jovović, Đurđica

Karanović, Danijela

Jeremić, Rada
Nešović-Ostojić, Jelena

Article (Published version)
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Renal ischemia/reperfusion injury is a common cause of acute kidney injury (AKI) and hypertension might contribute to the increased incidence of AKI. The purpose of this study was to investigate the effects of single and combined hyperbaric oxygen (HBO) preconditioning and NADPH oxidase inhibition on oxidative stress, kidney function and structure in spontaneously hypertensive rats (SHR) after renal ischemia reperfusion injury. HBO preconditioning was performed by exposing to pure oxygen (2.026 bar) twice a day for two consecutive days for 60 minutes, and 24h before AKI induction. For AKI induction, the right kidney was removed and ischemia was performed by clamping the left renal artery for 45 minutes. NADPH oxidase inhibition was induced by apocynin (40 mg/kg b.m., intravenously) 5 minutes before reperfusion. AKI significantly increased renal vascular resistance and reduced renal blood flow, which were significantly improved after apocynin treatment. Also, HBO preconditioning, with o...r without apocynin treatment showed improvement on renal hemodynamics. AKI significantly increased plasma creatinine, urea, phosphate levels and lipid peroxidation in plasma. Remarkable improvement, with decrease in creatinine, urea and phosphate levels was observed in all treated groups. HBO preconditioning, solitary or with apocynin treatment decreased lipid peroxidation in plasma caused by AKI induction. Also, combined with apocynin, it increased catalase activity and solitary, glutathione reductase enzyme activity in erythrocytes. While AKI induction significantly increased plasma KIM- 1 levels, HBO preconditioning, solitary or with apocynin decreased its levels. Considering renal morphology, significant morphological alterations present after AKI induction were significantly improved in all treated groups with reduced tubular dilatation, tubular necrosis in the cortico-medullary zone and PAS positive cast formation. Our results reveal that NADPH oxidase inhibition and hyperbaric oxygen preconditioning, with or without NADPH oxidase inhibition may have beneficial effects, but their protective role should be evaluated in further studies.
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PLoS One, 2020, 15, 1, e0226974-Publisher:
- Public Library Science, San Francisco
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DOI: 10.1371/journal.pone.0226974
ISSN: 1932-6203
PubMed: 31914135
WoS: 000534337700023
Scopus: 2-s2.0-85077731394
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Institut za medicinska istraživanjaTY - JOUR AU - Kovačević, Sanjin AU - Ivanov, Milan AU - Miloradović, Zoran AU - Brkić, Predrag AU - Vajić, Una-Jovana AU - Životić, Maja AU - Mihailović-Stanojević, Nevena AU - Jovović, Đurđica AU - Karanović, Danijela AU - Jeremić, Rada AU - Nešović-Ostojić, Jelena PY - 2020 UR - http://rimi.imi.bg.ac.rs/handle/123456789/1066 AB - Renal ischemia/reperfusion injury is a common cause of acute kidney injury (AKI) and hypertension might contribute to the increased incidence of AKI. The purpose of this study was to investigate the effects of single and combined hyperbaric oxygen (HBO) preconditioning and NADPH oxidase inhibition on oxidative stress, kidney function and structure in spontaneously hypertensive rats (SHR) after renal ischemia reperfusion injury. HBO preconditioning was performed by exposing to pure oxygen (2.026 bar) twice a day for two consecutive days for 60 minutes, and 24h before AKI induction. For AKI induction, the right kidney was removed and ischemia was performed by clamping the left renal artery for 45 minutes. NADPH oxidase inhibition was induced by apocynin (40 mg/kg b.m., intravenously) 5 minutes before reperfusion. AKI significantly increased renal vascular resistance and reduced renal blood flow, which were significantly improved after apocynin treatment. Also, HBO preconditioning, with or without apocynin treatment showed improvement on renal hemodynamics. AKI significantly increased plasma creatinine, urea, phosphate levels and lipid peroxidation in plasma. Remarkable improvement, with decrease in creatinine, urea and phosphate levels was observed in all treated groups. HBO preconditioning, solitary or with apocynin treatment decreased lipid peroxidation in plasma caused by AKI induction. Also, combined with apocynin, it increased catalase activity and solitary, glutathione reductase enzyme activity in erythrocytes. While AKI induction significantly increased plasma KIM- 1 levels, HBO preconditioning, solitary or with apocynin decreased its levels. Considering renal morphology, significant morphological alterations present after AKI induction were significantly improved in all treated groups with reduced tubular dilatation, tubular necrosis in the cortico-medullary zone and PAS positive cast formation. Our results reveal that NADPH oxidase inhibition and hyperbaric oxygen preconditioning, with or without NADPH oxidase inhibition may have beneficial effects, but their protective role should be evaluated in further studies. PB - Public Library Science, San Francisco T2 - PLoS One T1 - Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats IS - 1 SP - e0226974 VL - 15 DO - 10.1371/journal.pone.0226974 ER -
@article{ author = "Kovačević, Sanjin and Ivanov, Milan and Miloradović, Zoran and Brkić, Predrag and Vajić, Una-Jovana and Životić, Maja and Mihailović-Stanojević, Nevena and Jovović, Đurđica and Karanović, Danijela and Jeremić, Rada and Nešović-Ostojić, Jelena", year = "2020", abstract = "Renal ischemia/reperfusion injury is a common cause of acute kidney injury (AKI) and hypertension might contribute to the increased incidence of AKI. The purpose of this study was to investigate the effects of single and combined hyperbaric oxygen (HBO) preconditioning and NADPH oxidase inhibition on oxidative stress, kidney function and structure in spontaneously hypertensive rats (SHR) after renal ischemia reperfusion injury. HBO preconditioning was performed by exposing to pure oxygen (2.026 bar) twice a day for two consecutive days for 60 minutes, and 24h before AKI induction. For AKI induction, the right kidney was removed and ischemia was performed by clamping the left renal artery for 45 minutes. NADPH oxidase inhibition was induced by apocynin (40 mg/kg b.m., intravenously) 5 minutes before reperfusion. AKI significantly increased renal vascular resistance and reduced renal blood flow, which were significantly improved after apocynin treatment. Also, HBO preconditioning, with or without apocynin treatment showed improvement on renal hemodynamics. AKI significantly increased plasma creatinine, urea, phosphate levels and lipid peroxidation in plasma. Remarkable improvement, with decrease in creatinine, urea and phosphate levels was observed in all treated groups. HBO preconditioning, solitary or with apocynin treatment decreased lipid peroxidation in plasma caused by AKI induction. Also, combined with apocynin, it increased catalase activity and solitary, glutathione reductase enzyme activity in erythrocytes. While AKI induction significantly increased plasma KIM- 1 levels, HBO preconditioning, solitary or with apocynin decreased its levels. Considering renal morphology, significant morphological alterations present after AKI induction were significantly improved in all treated groups with reduced tubular dilatation, tubular necrosis in the cortico-medullary zone and PAS positive cast formation. Our results reveal that NADPH oxidase inhibition and hyperbaric oxygen preconditioning, with or without NADPH oxidase inhibition may have beneficial effects, but their protective role should be evaluated in further studies.", publisher = "Public Library Science, San Francisco", journal = "PLoS One", title = "Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats", number = "1", pages = "e0226974", volume = "15", doi = "10.1371/journal.pone.0226974" }
Kovačević, S., Ivanov, M., Miloradović, Z., Brkić, P., Vajić, U., Životić, M., Mihailović-Stanojević, N., Jovović, Đ., Karanović, D., Jeremić, R.,& Nešović-Ostojić, J.. (2020). Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats. in PLoS One Public Library Science, San Francisco., 15(1), e0226974. https://doi.org/10.1371/journal.pone.0226974 conv_4789
Kovačević S, Ivanov M, Miloradović Z, Brkić P, Vajić U, Životić M, Mihailović-Stanojević N, Jovović Đ, Karanović D, Jeremić R, Nešović-Ostojić J. Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats. in PLoS One. 2020;15(1):e0226974. doi:10.1371/journal.pone.0226974 conv_4789 .
Kovačević, Sanjin, Ivanov, Milan, Miloradović, Zoran, Brkić, Predrag, Vajić, Una-Jovana, Životić, Maja, Mihailović-Stanojević, Nevena, Jovović, Đurđica, Karanović, Danijela, Jeremić, Rada, Nešović-Ostojić, Jelena, "Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats" in PLoS One, 15, no. 1 (2020):e0226974, https://doi.org/10.1371/journal.pone.0226974 ., conv_4789 .