Urease inhibitors: current advances, therapeutic potentials, and clinical challenges
Abstract
Urease is a nickel-dependent metalloenzyme that catalyzes urea hydrolysis, generating ammonia and elevating local pH, a process implicated in the pathogenesis of Helicobacter pylori-associated peptic ulcer disease (PUD). To identify effective urease inhibitors, acetohydroxamic acid (AHA) remains the only FDA-approved agent, with clinical use constrained by toxicity. This review synthesizes current evidence on urease inhibition strategies, encompassing metal-based complexes, organic derivatives, natural products, peptide inhibitors, nanotechnology-enabled systems, and emerging gene-based approaches. Several candidates, including copper-based compounds and the natural alkaloid palmatine (PAL), demonstrate potent urease inhibition and favorable effects in preclinical models. However, translation to clinical practice is limited by safety concerns, instability, and a paucity of human trials. Advancing hybrid molecules, optimized delivery platforms, and combination therapies may enhance therapeutic efficacy. Rigorous clinical evaluation remains essential to establish urease inhibition as a viable strategy in urease-mediated diseases.
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