Dibenzazepine Attenuates Against Cisplatin-Induced Nephrotoxicity in Rats: Involvement of NOTCH Pathway

Abstract

Cisplatin is one of the standard anti-cancer agents that are used to treat variety of solid tumors. Nevertheless, due to the accumulation of cisplatin in the renal epithelial cells, nephrotoxicity was found to be the main side effect that limits its clinical use. The current study was conducted to assess the potential nephroprotective effect of dibenzazepine, a Notch inhibitor, against cisplatin-induced nephrotoxicity in rats as well as the possible mechanisms underlying this nephroprotection. The rats were pre-treated with 2 mg/kg dibenzazepine for 7 days before giving a single nephrotoxic dose of cisplatin (7 mg/kg). Cisplatin induced acute nephrotoxicity, where blood urea nitrogen and serum creatinine levels were significantly increased. Besides, lipid peroxidation was markedly elevated and the levels of reduced glutathione and catalase were significantly reduced. Also, the tissue levels of the pro-inflammatory mediators; IL-1β, TNF-α, and NF-kB, were significantly increased in the cisplatin group. The pre-treatment with dibenzazepine significantly mitigated the nephrotoxic effects of cisplatin, the oxidative stress and inflammatory status as well as decreased caspase-3 expression, as compared to the cisplatin group. Furthermore, the up-regulation of Notch-1 and Hes-1 was found to be involved in cisplatin-induced nephrotoxicity and their expression was significantly reduced by dibenzazepine. The nephroprotective effect of dibenzazepine was further confirmed by the histopathological assessment. Moreover, dibenzazepine pre-treatment of hela and PC3 cells in vitro did not antagonize the cisplatin anti-cancer activity. In conclusion, these findings show that dibenzazepine provides protection against cisplatin-induced nephrotoxicity. Moreover, the up-regulation of the Notch pathway was shown to play a role in the pathogenesis of cisplatin-induced renal injury.

The diminution and modulation role of water-soluble gallic acid-carboxymethyl chitosan conjugates against the induced nephrotoxicity with cisplatin

“…Caspase-3, an executioner of apoptosis is considered an index of apoptosis 37 . Consistent with previous investigations Abd El-Rhman et al 67 stated that the CDDP-treated rats had a 483.7 percent rise in caspase-3 levels when compared to the control rats. In comparison to the CDDP group, pretreatment of CDDP-injected rats with Dibenzazepine dramatically lowered caspase-3 levels by 43.2%.…”

The reversible and modulation role of water-soluble gallic acid-carboxymethyl chitosan conjugates against the induced nephrotoxicity with cisplatin

“…Consistent with previous investigations Abd El-Rhman et al 64 stated that the CDDP-treated rats had a 483.7 percent rise in caspase-3 levels when compared to the control rats. In comparison to the CDDP group, pretreatment of CDDP-injected rats with Dibenzazepine dramatically lowered caspase-3 levels by 43.2%.…”

Raloxifene Protects Cisplatin-Induced Renal Injury in Mice via Inhibiting Oxidative Stress

“…In this study, the serum creatinine and urea levels increased significantly in the cisplatin-treated mice, which confirmed the nephrotoxicity of cisplatin as reported by previous studies on rat models. 22–24 In addition, cisplatin also led to severe histopathological changes in the kidneys, including vacuolization of renal tubular epithelial cells, inter-tubular capillary hyperemia, glomerular mesangial cell proliferation, inflammatory cell infiltration, glomerular atrophy and focal renal hemorrhage. Furthermore, in this study, cisplatin induced liver damage, as indicated by the high AST and ALT levels, as well as hydro-degeneration and fatty degeneration of liver cells in the treated mice, which was consistent with the results of previous studies.…”