Neuroprotective Effects of Epicatechin against Oxidative Stress-Induced Cognitive Impairment: A Systematic Review and Meta-Analysis
Abstract
Oxidative stress is crucial in the pathogenesis of cognitive impairment and neurodegenerative diseases. Epicatechin, a natural flavanol abundant in cocoa, is a promising neuroprotective agent because of its antioxidant and anti-inflammatory properties. This meta-analysis aimed to evaluate the efficacy of epicatechin in mitigating oxidative stress-induced cognitive impairment in animal models. A systematic review of in vivo rodent studies was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, including studies reporting cognitive- and brain-based biochemical outcomes following epicatechin administration. The results indicated that epicatechin significantly improved the cognitive performance of rodents in the Morris water maze test, including improved spatial learning (reduced escape latency), memory retention (increased time spent in the target quadrant), and memory precision (increased island crossings). At the molecular level, epicatechin treatment increased the expression or activity of superoxide dismutase, catalase, and nuclear factor erythroid 2-related factor 2 and reduced the levels of nitric oxide, malondialdehyde, tumor necrosis factor-alpha, and interleukin-1 beta. These findings support the role of epicatechin in enhancing antioxidant defense and modulating neuroinflammation. Collectively, the results highlight that epicatechin has the therapeutic potential for preventing or mitigating oxidative stress-related…
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.
Read the paper
Related studies
- Antioxidant efficacy and the upregulation of Nrf2-mediated HO-1 expression by (+)-lariciresinol, a lignan isolated from Rubia philippinensis, through the activation of p38
- Anti-influenza virus activity of green tea by-products in vitro and efficacy against influenza virus infection in chickens
- Therapeutic Potential of Mesenchymal Stem Cells (MSCs) and MSC-Derived Extracellular Vesicles for the Treatment of Spinal Cord Injury
- The intratumoral administration of ferucarbotran conjugated with doxorubicin improved therapeutic effect by magnetic hyperthermia combined with pharmacotherapy in a hepatocellular carcinoma model
- Enhanced anticancer efficacy of TRAIL-conjugated and odanacatib-loaded PLGA nanoparticles in TRAIL resistant cancer
- In vivo tracking of bioorthogonally labeled T-cells for predicting therapeutic efficacy of adoptive T-cell therapy
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.