Plant-Derived Spinacetin Mitigates Cyclophosphamide-Induced Hemorrhagic Cystitis in Rats.

Area of Science:

• Biochemistry
• Pharmacology
• Urology

Background:

• Cyclophosphamide (CYP) is a chemotherapy agent that can induce hemorrhagic cystitis.
• Hemorrhagic cystitis is characterized by bladder inflammation, dysfunction, and potential tissue damage.
• Flavonoids, like spinacetin (SPC) from spinach, possess anti-inflammatory and protective properties.

Purpose of the Study:

• To evaluate the efficacy of spinacetin (SPC) in mitigating cyclophosphamide (CYP)-induced hemorrhagic cystitis.
• To assess SPC's impact on cystometric and inflammatory parameters in a rat model.
• To investigate SPC's potential to restore biochemical alterations in the bladder and urine.

Main Methods:

• Female Wistar rats were divided into control, CYP, SPC, and CYP + SPC groups (n=60).
• Animals received SPC for two weeks, followed by cystometry and biochemical analyses.
• Key urinary, detrusor muscle, and urothelium biomarkers were measured.

Main Results:

• SPC administration normalized cystometric parameters and c-Fos expression in CYP-induced cystitis.
• SPC prevented increased bladder wall thickness and permeability caused by CYP.
• SPC successfully restored elevated urinary (BDNF, NGF) and detrusor muscle (Rho kinase, VAChT) biomarkers.
• SPC attenuated increases in urothelial inflammatory markers (TNF-α, IL-1β, IL-6, CGRP) and oxidative stress indicators.
• SPC restored levels of tight junction proteins (occludin, Z01) and growth factors (HB-EGF, HPX) reduced by CYP.

Conclusions:

• Spinacetin (SPC) significantly alleviates cyclophosphamide (CYP)-induced cystometric dysfunction and biochemical changes.
• SPC demonstrates robust protective effects against iatrogenic hemorrhagic cystitis.
• SPC is a promising therapeutic candidate for managing chemotherapy-induced bladder injury, warranting further research.