Inhibition of Cyclooxygenase-2 Prevents Chronic and Recurrent Cystitis

Area of Science:

• Immunology
• Microbiology
• Urology

Background:

• Multidrug-resistant organisms necessitate new treatments for urinary tract infections (UTIs).
• Immunomodulatory therapies, like dexamethasone, show promise in managing acute UTIs and preventing chronic cystitis in mice.
• Chronic cystitis is a known risk factor for recurrent UTIs.

Purpose of the Study:

• Identify biomarkers predicting UTI recurrence in young women.
• Investigate the role of neutrophil response modulation in preventing chronic and recurrent cystitis.
• Determine if targeting cyclooxygenase-2 (COX-2) can prevent recurrent UTIs.

Main Methods:

• Serum analysis to identify soluble biomarkers associated with myeloid cell development and chemotaxis.
• Experimental UTI models in mice treated with dexamethasone and COX-2 inhibitors.
• Proteomic analysis of bladder tissue to identify changes associated with chronic infection.

Main Results:

• Elevated serum biomarkers for myeloid cell activity predicted future UTI recurrence in women.
• Inhibiting COX-2 early in acute UTI protected mice from chronic and recurrent cystitis.
• Bladder epithelial remodeling, increasing susceptibility to neutrophil damage, was identified in chronic infections.

Conclusions:

• COX-2 expression during acute UTI is a key factor influencing disease progression.
• Targeting COX-2 may represent a novel therapeutic strategy to prevent recurrent urinary tract infections.