A mechanistic study in obese mice demonstrating arbutin-induced metabolic and inflammatory improvements through microbiota modulation, supported by functional validation via antibiotic depletion and FMT, but limited to animal model without human efficacy data.
Early-phase preclinical study demonstrating a novel imaging probe in mice with exploratory findings on diet-enzyme relationships; lacks human validation, clinical endpoints, and comparative controls.
Mechanistic study in cell culture and diet-induced obesity model with surrogate endpoints; establishes a biological pathway but lacks human evidence and hard clinical outcomes needed to guide practice.