Sulforaphane protects against cisplatin-induced nephrotoxicity

Area of Science:

• Biochemistry
• Toxicology
• Pharmacology

Background:

• Cisplatin (cis-diamminedichloroplatinum II, CDDP) is a chemotherapy drug known to cause kidney toxicity.
• This nephrotoxicity is linked to increased oxidative and nitrosative stress.
• Sulforaphane (SFN), derived from cruciferous vegetables, activates cytoprotective enzymes via the Nrf2 pathway.

Purpose of the Study:

• To investigate the protective effects of Sulforaphane (SFN) against Cisplatin (CDDP)-induced nephrotoxicity.
• To determine if SFN can mitigate kidney damage caused by CDDP treatment.

Main Methods:

• In vitro: LLC-PK1 cells were pretreated with varying concentrations of SFN before CDDP exposure. Nrf2 translocation was assessed using immunofluorescent staining.
• In vivo: Wistar rats received CDDP, with SFN administered before and after CDDP injection. Renal function, structural damage, oxidative stress markers, and antioxidant enzyme activity were evaluated.

Main Results:

• SFN demonstrated a concentration-dependent protection against CDDP-induced cell death in LLC-PK1 cells.
• SFN treatment led to nuclear translocation of Nrf2, indicating pathway activation.
• In rats, SFN significantly attenuated CDDP-induced renal dysfunction, structural damage, and oxidative/nitrosative stress.
• SFN preserved glutathione levels and prevented the decrease in key antioxidant enzymes like catalase and glutathione peroxidase.

Conclusions:

• Sulforaphane (SFN) exhibits significant renoprotective effects against Cisplatin (CDDP)-induced nephrotoxicity.
• The protective mechanism involves the attenuation of oxidative/nitrosative stress and the preservation of endogenous antioxidant defense systems.
• SFN's ability to activate Nrf2 contributes to its cytoprotective properties against chemotherapy-induced kidney damage.