کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2541811 1122675 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of CVT-E002™ (COLD-fX®) versus a ginsenoside extract on systemic and gut-associated immune function
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
Effect of CVT-E002™ (COLD-fX®) versus a ginsenoside extract on systemic and gut-associated immune function
چکیده انگلیسی

CVT-E002™ (sold commercially as COLD-fX®) is a patented, polysaccharide-rich extract of North American ginseng (Panax quinquefolium) with purported beneficial effects on influenza and the common cold, although its mechanism of action is largely unknown. This study was conducted to determine the effects of feeding CVT-E002™ versus a ginsenoside-containing extract on systemic and gut-associated immune function. For 7 days, male weanling Sprague–Dawley rats (n = 10/group) were fed one of four diets: control, low CVT-E002™ (450 mg/kg), high CVT-E002™ (900 mg/kg), or ginsenoside (450 mg/kg). Lymphocytes were isolated from spleen, mesenteric lymph nodes and Peyer's patches, and immune cell proportions and cytokine production were measured. IgA-positive cells in the jejunum were also assayed. CVT-E002™ consumption (particularly at the higher dose) decreased spleen IL-2 and IFN-γ production following ConA and/or LPS stimulation for 24 or 48 h (P < 0.05). Also, CVT-E002™-fed rats had a lower proportion of total CD3+ cells and activated T cells (P < 0.05). After 48 h of ConA stimulation, spleen IL-1β production was higher (P < 0.05) for animals fed the high dose CVT-E002™, whereas TNF-α production did not differ significantly from the control group. Feeding the ginsenoside diet resulted in lower (P < 0.05) spleen IL-2 production, but the IFN-γ, TNF-α and IL-1β response to ConA was not different from control animals at 48 h. A higher proportion of jejunal IgA-positive cells was found in rats fed the ginsenoside diet (P < 0.05). In conclusion, feeding CVT-E002™ modifies systemic immune responses and appears to affect gut-associated immunity in a manner distinct from that of ginsenoside-containing extracts of North American ginseng.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Immunopharmacology - Volume 8, Issue 8, August 2008, Pages 1134–1142
نویسندگان
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