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Prazosin Protects the Liver Against Renal Ischemia/Reperfusion Injury in Rats
Fatemeh Khajepour1, Fariba Mahmoodpoor2,3, Elmira Jafari1
1Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Abstract:
Acute kidney injury (AKI) is a common subsequent problem after many medical conditions. AKI is associated with distant organ dysfunction where systemic inflammation and oxidative stress play major roles. In this study, the effect of Prazosin, an α1-Adrenergic receptor antagonist, was investigated on the liver injury induced by kidney ischemia-reperfusion (I/R) in rats. Male adult Wistar rats (n=21) were divided into three groups: sham, kidney I/R, and kidney I/R pre-treated with Prazosin (1 mg/kg). Kidney I/R was induced by vascular clamping of the left kidney for 45 min to reduce the blood flow. Oxidative and antioxidant factors along with apoptotic (Bax, Bcl-2, caspase3), and inflammatory (NF-κβ, IL-1β, and IL-6) factors were measured in the liver at protein levels. Prazosin could reserve liver function (p<0.01) and increase glutathione level (p<0.05) after kidney I/R significantly. Malonil dialdehyde (MDA), a lipid peroxidation marker, was diminished more significantly in Prazosin-treated rats compared to the kidney I/R group (p<0.001). Inflammatory and apoptotic factors were diminished by Prazosin pre-treatment in the liver tissue (p<0.05). Pre-administration of Prazosin could preserve liver function and decrease its inflammatory and apoptotic factors under kidney I/R conditions.
Insights
Prazosin protects the liver from damage caused by kidney ischemia-reperfusion (I/R) injury. This alpha-1 adrenergic antagonist reduces inflammation and oxidative stress, preserving liver function after kidney I/R.
Area of Science:
- Nephrology
- Hepatology
- Pharmacology
Background:
- Acute kidney injury (AKI) often leads to distant organ damage, with systemic inflammation and oxidative stress being key contributors.
- Kidney ischemia-reperfusion (I/R) is a significant cause of AKI and can induce secondary liver injury.
- Alpha-1 adrenergic receptor antagonists, like Prazosin, are being explored for protective effects against organ damage.
Purpose of the Study:
- To investigate the protective effects of Prazosin on liver injury induced by kidney ischemia-reperfusion (I/R) in a rat model.
- To evaluate the impact of Prazosin on oxidative stress, inflammation, and apoptosis in the liver following kidney I/R.
Main Methods:
- Male Wistar rats were divided into sham, kidney I/R, and Prazosin-pre-treated kidney I/R groups.
- Kidney I/R was induced via vascular clamping for 45 minutes.
- Liver tissue was analyzed for oxidative stress markers (glutathione, MDA), and inflammatory (NF-κβ, IL-1β, IL-6) and apoptotic (Bax, Bcl-2, caspase3) factors at the protein level.
Main Results:
- Prazosin pre-treatment significantly preserved liver function (p<0.01) and increased glutathione levels (p<0.05) post-kidney I/R.
- Malondialdehyde (MDA) levels, a marker of lipid peroxidation, were significantly reduced in the Prazosin group (p<0.001).
- Prazosin administration diminished inflammatory and apoptotic factors in liver tissue (p<0.05).
Conclusions:
- Pre-administration of Prazosin effectively preserves liver function following kidney I/R injury.
- Prazosin mitigates liver inflammation and apoptosis, likely through its antioxidant and anti-inflammatory properties.
- Prazosin represents a potential therapeutic agent for preventing or treating liver injury secondary to kidney I/R.
