Quercetin for inhibition of inflammatory responses and oxidative stress in lung injury model: a systematic review and meta-analysis
Abstract
Abstract Acute lung injury (ALI) is a life-threatening clinical syndrome with high morbidity and mortality. The main pathological features of ALI are increased alveolar-capillary membrane permeability, edema, uncontrolled migration of neutrophils to the lungs, and diffuse alveolar damage, resulting in acute hypoxemic respiratory failure. We performed a systematic review and meta-analysis to elucidate the antioxidant activities of flavanols in a rat model of acute lung injury (ALI). PubMed, EMBASE, Scopus, ProQuest, Web of Science, and Google Scholar databases were searched to obtain the relevant papers. Nine studies with 343 rat models of ALI were included in this study. We investigated oxidative stress with the corresponding 95% CI. Estimating the correlation and 95% CIs for the inflammatory agents and oxidative stress in the intervention group, compared with that in the control group (ALI), respectively (correlation: 0.635; 95% CI, 0.560–0.699, P value = 0.000, Z value= 12.648) and (correlation: 0.317; 95% CI, 0.189–0.434, P value = 0.00, Z value= 4.7). In conclusion, investigating the effects of different flavanols on oxidative stress in lung injury may provide a useful therapeutic strategy in ALI mouse models. However, the final conclusion on treatment efficacy should be sufficient for prospective controlled randomized trials.
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in animal, not in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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