The potential role of morin and/or carvedilol on experimentally-induced hepatic ischemia-reperfusion injury in rats (Code PO.3.4.5) /
PO.3.4.5 الدور المحتمل للموريين مع/أو الكارفيديلول فى الاعتلال الكبدى المحدث تجريبيا بنقص الدم و اعادة التروية فى الجرذان الكود
Nermein Fawzy Elsayed ; Supervised Hanan Salah Eldin Elabhar , Dalaal Moustafa Abdallah , Azza Sayed Awad
- Cairo : Nermein Fawzy Elsayed , 2021
- 139 P. : charts , facsimiles ; 25cm
Thesis (Ph.D.) - Cairo University - Faculty of Pharmacy - Department of Pharmacology and Toxicology
Although the central role of Nurr-1/GDNF has been reviewed amply, scarce data are available on their peripheral impact. Carvedilol and morin hydrate have previously conferred their hepatic anti-fibrotic action. Aim: Thus, our aim was to unveil the potential hepatoprotective role of carvedilol (CR) and/or morin hydrate (MH) using a hepatic 70% partial warm ischemia/reperfusion (I/R) rat model. Main method: Rats were allocated into sham-operated, hepatic I/R, and I/R preceded by oral administration of CR (10 and 30 mg/kg; CR10/CR30), MH (30 mg/kg), or CR10 + MH for one week. Key findings: On the molecular level, pretreatment with CR and/or MH increased the hepatic contents of Nurr-1, GDNF, and the protein expression of active/p-AKT.On the other hand, they inactivated GSK3Ý and NF-mB to increase the antioxidant enzymes (GPx, SOD, CAT). All regimens also enhanced the autophagy/lysosomal function and boosted the protein expression of beclin-1, LC3II, and TFEB. Moreover, their antiapoptotic effect was signified by increasing the anti-apoptotic molecule Bcl2 and inhibiting Bax, Bax/Bcl2 ratio, and caspase-3, effects that were confirmed by the TUNEL assay. These improvements were reflected on liver function, as they decreased serum aminotransferases and liver structural alterations induced by I/R. Despite its mild impact, CR10 showed marked improvements when combined with MH; this synergistic interaction overrides the effect of either regimen alone. Significance: In conclusion, CR, MH, and especially the combination regimen, conferred hepatoprotection against I/R via activating the Nurr-1/GDNF/AKT trajectory to induce autophagy/lysosomal biogenesis, inhibit GSK3Ý/ NF-кB hub and apoptosis, and amend redox balance