Polyphenol extracts interfere with bacterial lipopolysaccharide in vitro and decrease postprandial endotoxemia in human volunteers
Author(s)
Wong, Ximena
Maria Madrid, Ana
Tralma, Karina
Castillo, Romina
Carrasco-Pozo, Catalina
Navarrete, Paola
Beltran, Caroll
Pastene, Edgar
Gotteland, Martin
Griffith University Author(s)
Year published
2016
Metadata
Show full item recordAbstract
The intestinal absorption of bacterial lipopolysaccharide (LPS) and dietary fat has been implicated in the development of metabolic endotoxemia. This study first compared the ability of polyphenol extracts from grape, cranberry, avocado and apple to interfere with pancreatic lipase and LPS in vitro. The grape extract displayed a higher inhibitory activity of lipase (IC50 = 8.6 ± 1.1 mg/ml) and LPS binding (IC50 = 90 ± 1.1 µg/ml). Then, a study was carried out in 12 normal weight and 17 overweight/obese subjects to determine the effect of this extract on the postprandial changes in plasma triacylglycerols, LPS and IL-6. The ...
View more >The intestinal absorption of bacterial lipopolysaccharide (LPS) and dietary fat has been implicated in the development of metabolic endotoxemia. This study first compared the ability of polyphenol extracts from grape, cranberry, avocado and apple to interfere with pancreatic lipase and LPS in vitro. The grape extract displayed a higher inhibitory activity of lipase (IC50 = 8.6 ± 1.1 mg/ml) and LPS binding (IC50 = 90 ± 1.1 µg/ml). Then, a study was carried out in 12 normal weight and 17 overweight/obese subjects to determine the effect of this extract on the postprandial changes in plasma triacylglycerols, LPS and IL-6. The presence of small intestine bacterial overgrowth (SIBO), in which higher levels of bacteria and eventually LPS are present in the upper intestine, i.e. where dietary fat absorption occurs, was also evaluated. Compared with placebo, the grape extract did not affect postprandial triacylglycerolemia but decreased plasma LPS, without affecting the IL-6-associated inflammatory response. SIBO did not affect these variables.
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View more >The intestinal absorption of bacterial lipopolysaccharide (LPS) and dietary fat has been implicated in the development of metabolic endotoxemia. This study first compared the ability of polyphenol extracts from grape, cranberry, avocado and apple to interfere with pancreatic lipase and LPS in vitro. The grape extract displayed a higher inhibitory activity of lipase (IC50 = 8.6 ± 1.1 mg/ml) and LPS binding (IC50 = 90 ± 1.1 µg/ml). Then, a study was carried out in 12 normal weight and 17 overweight/obese subjects to determine the effect of this extract on the postprandial changes in plasma triacylglycerols, LPS and IL-6. The presence of small intestine bacterial overgrowth (SIBO), in which higher levels of bacteria and eventually LPS are present in the upper intestine, i.e. where dietary fat absorption occurs, was also evaluated. Compared with placebo, the grape extract did not affect postprandial triacylglycerolemia but decreased plasma LPS, without affecting the IL-6-associated inflammatory response. SIBO did not affect these variables.
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Journal Title
Journal of Functional Foods
Volume
26
Subject
Food sciences
Nutrition and dietetics
Medical physiology
Science & Technology
Life Sciences & Biomedicine
Proanthocyanidins