Grape seed procyanidin extract reduces the endotoxic effects induced by lipopolysaccharide in rats
| Autor: | Lídia Cedó, Maria Josepa Salvadó, Victor Pallarès, Mayte Blay, Montserrat Pinent, Santiago Garcia-Vallvé, Anabel Fernández-Iglesias, Anna Ardévol, Anna Castell-Auví |
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| Rok vydání: | 2013 |
| Předmět: |
Lipopolysaccharides
food.ingredient Lipopolysaccharide Inflammation Pharmacology Nitric Oxide medicine.disease_cause Biochemistry Catechin Proinflammatory cytokine Nitric oxide chemistry.chemical_compound food Physiology (medical) medicine Animals Biflavonoids Proanthocyanidins Grape Seed Extract biology Tumor Necrosis Factor-alpha Interleukins Shock Septic Rats Nitric oxide synthase Oxidative Stress chemistry Grape seed extract Immunology biology.protein Tumor necrosis factor alpha medicine.symptom Reactive Oxygen Species Oxidative stress |
| Zdroj: | Free Radical Biology and Medicine. 60:107-114 |
| ISSN: | 0891-5849 |
| DOI: | 10.1016/j.freeradbiomed.2013.02.007 |
| Popis: | Acute inflammation is a response to injury, infection, tissue damage, or shock. Bacterial lipopolysaccharide (LPS) is an endotoxin implicated in triggering sepsis and septic shock, and LPS promotes the inflammatory response, resulting in the secretion of proinflammatory and anti-inflammatory cytokines such as the interleukins (IL-6, IL-1β, and IL-10) and tumor necrosis factor-α by the immune cells. Furthermore, nitric oxide and reactive oxygen species levels increase rapidly, which is partially due to the activation of inducible nitric oxide synthase in several tissues in response to inflammatory stimuli. Previous studies have shown that procyanidins, polyphenols present in foods such as apples, grapes, cocoa, and berries, have several beneficial properties against inflammation and oxidative stress using several in vitro and in vivo models. In this study, the anti-inflammatory and antioxidant effects of two physiological doses and two pharmaceutical doses of grape seed procyanidin extract (GSPE) were analyzed using a rat model of septic shock by the intraperitoneal injection of LPS derived from Escherichia coli. The high nutritional (75mg/kg/day) and the high pharmacological doses (200mg/kg/day) of GSPE showed anti-inflammatory effects by decreasing the proinflammatory marker NOx in the plasma, red blood cells, spleen, and liver. Moreover, the high pharmacological dose also downregulated the genes Il-6 and iNos; and the high nutritional dose decreased the glutathione ratio (GSSG/total glutathione), further illustrating the antioxidant capability of GSPE. In conclusion, several doses of GSPE can alleviate acute inflammation triggered by LPS in rats at the systemic and local levels when administered for as few as 15 days before the injection of endotoxin. |
| Databáze: | OpenAIRE |
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