Journal Article

Grape Resveratrol Increases Serum Adiponectin and Downregulates Inflammatory Genes in Peripheral Blood Mononuclear Cells: A Triple-Blind, Placebo-Controlled, One-Year Clinical Trial in Patients with Stable Coronary Artery Disease

Espín, Juan Carlos, Larrosa, Mar, García-Almagro, Francisco J., García-Conesa, María T., Tomé-Carneiro, João, Ruiz-Ros, José A., Gonzálvez, Manuel, Yáñez-Gascón, María J., Tomás-Barberán, Francisco A.

2013

Overview

Purpose The grape and wine polyphenol resveratrol exerts cardiovascular benefits but evidence from randomized human clinical trials is very limited. We investigated dose-depending effects of a resveratrol-containing grape supplement on stable patients with coronary artery disease (CAD) treated according to currently accepted guidelines for secondary prevention of cardiovascular disease. Methods In a triple-blind, randomized, placebo-controlled, one-year follow-up, 3-arm pilot clinical trial, 75 stable-CAD patients received 350 mg/day of placebo, resveratrol-containing grape extract (grape phenolics plus 8 mg resveratrol) or conventional grape extract lacking resveratrol during 6 months, and a double dose for the following 6 months. Changes in circulating inflammatory and fibrinolytic biomarkers were analyzed. Moreover, the transcriptional profiling of inflammatory genes in peripheral blood mononuclear cells (PBMCs) was explored using microarrays and functional gene expression analysis. Results After 1 year, in contrast to the placebo and conventional grape extract groups, the resveratrol-containing grape extract group showed an increase of the anti-inflammatory serum adiponectin (9.6 %, p  = 0.01) and a decrease of the thrombogenic plasminogen activator inhibitor type 1 (PAI-1) (−18.6 %, p =  0.05). In addition, 6 key inflammation-related transcription factors were predicted to be significantly activated or inhibited, with 27 extracellular-space acting genes involved in inflammation, cell migration and T-cell interaction signals presenting downregulation ( p <  0.05) in PBMCs. No adverse effects were detected in relation to the study products. Conclusions Chronic daily consumption of a resveratrol-containing grape nutraceutical could exert cardiovascular benefits in stable-CAD patients treated according to current evidence-based standards, by increasing serum adiponectin, preventing PAI-1 increase and inhibiting atherothrombotic signals in PBMCs.

• Publisher: Springer US,Springer,Springer Nature B.V
• Subject: Adiponectin / Adiponectin - blood / Anti-Inflammatory Agents - administration & dosage / Anti-Inflammatory Agents - therapeutic use / Biological and medical sciences / Cardiology / Cardiology. Vascular system / Cardiovascular system / Coronary Artery Disease - blood / Coronary Artery Disease - drug therapy / Coronary Artery Disease - genetics / Coronary Artery Disease - immunology / Coronary heart disease / Dietary Supplements / Down-Regulation / Female / Heart / Humans / Leukocytes, Mononuclear - drug effects / Leukocytes, Mononuclear - immunology / Leukocytes, Mononuclear - metabolism / Male / Medical sciences / Medicine / Medicine & Public Health / Middle Aged / Original / Original Article / Pharmacology. Drug treatments / Plant Extracts - administration & dosage / Plant Extracts - therapeutic use / Research Design / Resveratrol / Stilbenes - administration & dosage / Stilbenes - therapeutic use / Transcription Factors - genetics / Treatment Outcome / Vitaceae / Vitis - chemistry