文章基本信息

标题：Antimicrobial Activity and Protective Effect of Tuscan Bee Pollens on Oxidative and Endoplasmic Reticulum Stress in Different Cell-Based Models
本地全文：下载
作者：Morena Gabriele ; Stefania Frassinetti ; Laura Pucci 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2021
卷号：10
期号：6
页码：1422
DOI：10.3390/foods10061422
出版社：MDPI Publishing
摘要：Bee pollen is an apiary product of great interest owing to its high nutritional and therapeutic properties. This study aimed to assess the cellular antioxidant activity and the antihemolytic effect of Castanea, Rubus, and Cistus bee pollens on human erythrocytes. We also tested the antimicrobial potential of each sample on selected Gram-negative and Gram-positive bacteria. Finally, the effect of Castanea bee pollen, showing the best phytochemical profile, was analyzed on human microvascular endothelial cells exposed to thapsigargin, used as endoplasmic reticulum (ER) stressor. Our results showed good biological activities of all bee pollen samples that, under oxidative conditions, significantly improved the erythrocytes’ antioxidant activity and limited cell lyses. Castanea and Cistus showed comparable antihemolytic activities, with higher % hemolysis inhibition than Rubus. All samples exerted antimicrobial activity with different selectivity among all the tested microorganisms with minimal inhibitory concentration values ranging from 5 to 10 mg/mL. Finally, Castanea bee pollen was effective in reducing gene over-expression and oxidation process arising from thapsigargin treatment, with a maximum protective effect at 10 µg/mL. In conclusion, bee pollen represents a potential natural antibacterial and a good nutraceutical product useful in the prevention of free radical and ER stress-associated diseases.
关键词：bee pollen; antioxidant activity; antihemolytic effect; Cellular Antioxidant Activity in Red Blood Cells CAA-RBC; antimicrobial activity; Minimum Inhibitory Concentration (MIC); Human Microvascular Endothelial Cells (HMEC-1); endoplasmic reticulum stress bee pollen ; antioxidant activity ; antihemolytic effect ; Cellular Antioxidant Activity in Red Blood Cells CAA-RBC ; antimicrobial activity ; Minimum Inhibitory Concentration (MIC) ; Human Microvascular Endothelial Cells (HMEC-1) ; endoplasmic reticulum stress