INRS researchers find cranberry compounds boost antibiotics and curb resistance
Updated
Updated · The Times · May 4
INRS researchers find cranberry compounds boost antibiotics and curb resistance
5 articles · Updated · The Times · May 4
In laboratory tests in Canada, the effect appeared in 72% of E.coli strains linked to urinary tract infections, with fosfomycin showing stronger activity.
The peer-reviewed study said cranberry compounds increased bacterial uptake of the drug and significantly reduced mutations associated with antibiotic resistance.
Researchers said it remains unclear whether drinking cranberry juice would deliver the same benefit in patients, though the findings add to evidence that cranberry products may help prevent some UTIs.
Could this common fruit juice be the key to finally defeating antibiotic-resistant superbugs?
As superbugs evolve faster than new drugs, are natural food compounds our last hope?
Multi-Mechanistic Action of Cranberry Proanthocyanidins as Antibiotic Adjuvants: Advancing Solutions for Drug-Resistant UTIs
Overview
Since 2019, researchers have discovered that cranberry-derived proanthocyanidins (cPACs) help fight antibiotic resistance by increasing bacterial membrane permeability and blocking efflux pumps, enhancing the effectiveness of key β-lactam antibiotics against resistant bacteria like E. coli and MRSA. These findings, confirmed in animal models, have spurred patents and major industry investments, notably from Ocean Spray. With antibiotic resistance causing a global health crisis and multidrug-resistant urinary tract infections rising, standardized cranberry products have shown promise in preventing recurrent infections. However, clinicians call for large-scale trials to confirm cPACs' safety and optimal use, while skeptics highlight challenges like product variability and bioavailability. Future research aims to address these hurdles to unlock cPACs' full potential as natural antibiotic adjuvants.