An antiinflammatory and reactive oxygen species suppressive effects of an extract of Polygonum cuspidatum containing resveratrol.
BACKGROUND
Resveratrol have been shown to exert an antiinflammatory and antiaging effects in vitro and in animal models.


OBJECTIVE
The objective of the study was to investigate the effect of a Polygonum cuspidatum extract (PCE) containing resveratrol on oxidative and inflammatory stress in normal subjects.


METHODS
Two groups (10 each) of normal-weight healthy subjects were randomized to placebo or PCE containing 40 mg resveratrol daily for 6 wk. Fasting blood samples were obtained prior to and after treatment at 1, 3, and 6 wk. Mononuclear cells were prepared for reactive oxygen species generation, RNA isolation, nuclear extract, and total cell homogenate preparation. Indices of oxidative and inflammatory stress, suppressor of cytokine signaling-3, phosphotyrosine phosphatase-1B, jun-N-terminal kinase-1, and inhibitor of kappaB-kinase-beta were measured by RT-PCR and Western blotting.


RESULTS
The extract induced a significant reduction in reactive oxygen species generation, the expression of p47(phox), intranuclear nuclear factor-kappaB binding, and the expression of jun-N-terminal kinase-1, inhibitor of kappaB-kinase-beta, phosphotyrosine phosphatase-1B, and suppressor of cytokine signaling-3 in mononuclear cells when compared with the baseline and the placebo. PCE intake also suppressed plasma concentrations of TNF-alpha, IL-6, and C-reactive protein. There was no change in these indices in the control group given placebo.


CONCLUSIONS
The PCE-containing resveratrol has a comprehensive suppressive effect on oxidative and inflammatory stress.
Division of Endocrinology, Diabetes, and Metabolism, State University of New York at Buffalo and Kaleida Health, Buffalo, New York 14209, USA.
Husam
H
Ghanim
Chang Ling
CL
Sia
Sanaa
S
Abuaysheh
Kelly
K
Korzeniewski
Priyanka
P
Patnaik
Anuritha
A
Marumganti
Ajay
A
Chaudhuri
Paresh
P
Dandona
D000328:Adult; D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology; D001786:Blood Glucose / Q000187:drug effects / Q000378:metabolism; D016207:Cytokines / Q000235:genetics / Q000378:metabolism; D045468:Fallopia japonica / Q000737:chemistry; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D018836:Inflammation Mediators / Q000097:blood / Q000378:metabolism; D007328:Insulin / Q000097:blood; D020738:Leptin / Q000097:blood; D008055:Lipids / Q000097:blood; D018384:Oxidative Stress / Q000187:drug effects; D010919:Placebos; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D017382:Reactive Oxygen Species / Q000037:antagonists & inhibitors* / Q000378:metabolism; D000077185:Resveratrol; D013267:Stilbenes / Q000737:chemistry / Q000494:pharmacology*
D000893:Anti-Inflammatory Agents; D000975:Antioxidants; D001786:Blood Glucose; D016207:Cytokines; D018836:Inflammation Mediators; D007328:Insulin; D020738:Leptin; D008055:Lipids; D010919:Placebos; D010936:Plant Extracts; D017382:Reactive Oxygen Species; D013267:Stilbenes; D000077185:Resveratrol