Efficacy and safety of dietary polyphenol supplements for COPD: a systematic review and meta-analysis
Abstract
BACKGROUND: The therapeutic application of dietary polyphenols in chronic obstructive pulmonary disease (COPD) management represents an emerging therapeutic paradigm in pulmonary medicine. As bioactive compounds exhibiting dual antioxidant and anti-inflammatory properties, polyphenolic derivatives demonstrate significant therapeutic potential through multimodal mechanisms targeting COPD pathophysiology - particularly in modulating redox homeostasis (GSH/GSSG ratio elevation), attenuating NF-κB-mediated inflammatory cascades, and enhancing respiratory function parameters (FEV1 improvement ≥12% from baseline). However, current clinical evidence remains inconclusive, with meta-analyses revealing heterogeneity in intervention outcomes across randomized controlled trials. This systematic investigation employs a triple-blind, placebo-controlled design to rigorously evaluate the clinical efficacy of standardized oral polyphenol supplementation in COPD patients (GOLD stages II-III), incorporating advanced biomarkers including 8-isoprostane quantification and pulmonary function trajectory analysis.
METHODS: Literature on dietary polyphenols for the treatment of COPD published in PubMed, Cochrane, Medline, CNKI and other databases before December 26, 2024 (in Chinese and English) was searched. Manual screening, quality assessment and data extraction of search results were performed in strict accordance with the inclusion and exclusion criteria. Meta-analysis was performed using RevMan…
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Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 894 participants or records.
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