Intravesical Dimethyl Sulfoxide Inhibits Acute and Chronic Bladder Inflammation in Transgenic Experimental Autoimmune Cystitis Models

Abstract EN

New animal models are greatly needed in interstitial cystitis/painful bladder syndrome (IC/PBS) research.

We recently developed a novel transgenic cystitis model (URO-OVA mice) that mimics certain key aspects of IC/PBS pathophysiology.

This paper aimed to determine whether URO-OVA cystitis model was responsive to intravesical dimethyl sulfoxide (DMSO) and if so identify the mechanisms of DMSO action.

URO-OVA mice developed acute cystitis upon adoptive transfer of OVA-specific OT-I splenocytes.

Compared to PBS-treated bladders, the bladders treated with 50% DMSO exhibited markedly reduced bladder histopathology and expression of various inflammatory factor mRNAs.

Intravesical DMSO treatment also effectively inhibited bladder inflammation in a spontaneous chronic cystitis model (URO-OVA/OT-I mice).

Studies further revealed that DMSO could impair effector T cells in a dose-dependent manner in vitro.

Taken together, our results suggest that intravesical DMSO improves the bladder histopathology of IC/PBS patients because of its ability to interfere with multiple inflammatory and bladder cell types.