Abstract
Background
Upregulation of the sodium glucose co-transporter (SGLT2) is implicated in acute renal injury (ARI) progression and is regulated by extracellular signal-regulated kinase (ERK), hypoxia-inducible factor 1 alpha (HIF1α) or prostaglandin E2 (PGE2). This study aimed to assess the possible protective effect of nebivolol on renal ischemia/reperfusion (IR) and glycerol-induced ARI targeting SGLT2 via modulating the ERK–HIF1α pathway.
Methods
Rats were divided into control, sham, IR or nebivolol-treated group, in which rats were treated with nebivolol (10 mg/kg) for 3 days prior to the induction of IR. The rats were subjected to renal ischemia by bilateral clamping of the pedicles for 45 min, followed by 24 h reperfusion. Another group of rats received the vehicle or nebivolol (10 mg/kg) for 3 days followed by injection of 50% glycerol (8 ml/kg, IM) or saline. Kidney function tests, systolic blood pressure (SBP), oxidative stress markers [malondialdehyde (MDA) and NADPH oxidase] and kidney levels of nitric oxide (NO), inducible nitric oxide synthase (iNOS), HIF1α, ERK phosphorylation and PGE2 were determined. Additionally, renal sections were used for histological grading of renal injury and immunological expression of SGLT2.
Results
ARI rats showed significantly increased SBP, poor kidney function tests, increased oxidative stress, iNOS, NO, HIF1α levels, decreased PGE2 and ERK phosphorylation and upregulation of SGLT2 expression. Nebivolol treatment protected against the kidney damage both on the biochemical and histological levels.
Conclusion
Nebivolol has a direct renoprotective effect, at least in part, by down-regulating SGLT2 possibly via modulating HIF1α, ERK activity and PGE2 production.
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Abbreviations
- ANOVA:
-
One-way analysis of variance
- ARI:
-
Acute renal injury
- ERK:
-
Extracellular signal-regulated kinase
- eNOS:
-
Endothelial nitric oxide synthetase
- GFR:
-
Glomerular filtration rate
- GLY:
-
Glycerol
- HE:
-
Hematoxylin and eosin
- HIF1 α:
-
Hypoxia-inducible factor 1 alpha
- IHC:
-
Immunohistochemistry
- iNOS:
-
Inducible nitric oxide synthetase
- IR:
-
Ischemia/reperfusion
- MDA:
-
Malondialdehyde
- NADPH oxidase:
-
Nicotinamide adenine dinucleotide phosphate oxidase
- NO:
-
Nitric oxide
- PGE2:
-
Prostaglandin E2
- ROS:
-
Reactive oxygen species
- SBP:
-
Systolic blood pressure
- SEM:
-
Standard error of the mean
- SGLT2:
-
Sodium glucose co-transporter 2
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Nasr, A.M., Rezq, S., Shaheen, A. et al. Renal protective effect of nebivolol in rat models of acute renal injury: role of sodium glucose co-transporter 2. Pharmacol. Rep 72, 956–968 (2020). https://doi.org/10.1007/s43440-020-00059-5
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DOI: https://doi.org/10.1007/s43440-020-00059-5