VIVIANE ZORZANELLI ROCHA GIRALDEZ

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Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico

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Autor e Coautores FMUSP-HC Normalizados: LEONARDO CELESTE MANGILI × Assunto: c-reactive protein ×

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  • article 80 Citação(ões) na Scopus
    Effects of phytosterols on markers of inflammation: A systematic review and meta-analysis
    (2016) ROCHA, Viviane Z.; RAS, Rouyanne T.; GAGLIARDI, Ana C.; MANGILI, Leonardo C.; TRAUTWEIN, Elke A.; SANTOS, Raul D.
    Background and aims: Regular intake of phytosterols (PS) is proven to dose-dependently lower LDL-cholesterol (LDL-C). Whether PS consumption can also impact low-grade inflammation is unclear. Considering the low feasibility of outcomes studies involving PS consumption, investigation of surrogate markers of atherosclerosis represents a valuable approach. This study assessed the anti-inflammatory effect of PS consumption, according to inflammatory biomarkers, mainly C-reactive protein (CRP). Methods and results: A systematic search of Medline, Cab Abstracts, and Food Science & Technology Abstracts was conducted through January 2015. Our study selection included randomized controlled trials (RCT), involving intake of PS-enriched foods as active treatment, and measurement of plasma inflammatory biomarkers. Random-effects meta-analyses were performed using average baseline and end-of-intervention concentrations and control-adjusted absolute changes in CRP and blood lipids. There were 20 eligible RCTs including a total of 1308 subjects. The absolute change of plasma CRP levels with PS consumption was -0.10 mg/L (95% CI -0.26; 0.05), a non-significant change, and heterogeneity had borderline significance (I-2 = 29.1; p-value = 0.073). The absolute reduction of LDL-C was -14.3 mg/dL (95% CI -17.3; -11.3). Meta-regression analyses showed that both the dose and duration of PS intake significantly influenced the absolute changes in plasma CRP (beta = -0.35, p = 0.0255 and beta = -0.03, p = 0.0209, respectively). Conclusions: In this meta-analysis, regular intake of PS-enriched foods did not significantly change CRP, whilst LDL-C concentrations were significantly reduced. Further studies with higher PS doses may provide more definite conclusions on a potential anti-inflammatory effect of PS intake.