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枸杞多糖对实验性食管癌大鼠外周血细胞免疫功能的影响 被引量:6

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摘要 目的探讨枸杞多糖对甲基苄基亚硝胺诱导食管癌大鼠外周血细胞免疫功能的影响及其意义。方法健康雄性F344大鼠40只,随机分为模型组(10只)、治疗组(10只)、生理盐水对照组(10只)和正常对照组(10只)。正常对照组常规饲养,其余两组以甲基苄基亚硝胺(NMBA)0.5 mg/kg皮下注射于大鼠诱导食管癌模型,治疗组在诱癌同时预防性给予枸杞多糖10 mg/kg灌胃治疗,生理盐水对照组给予生理盐水1ml/kg灌胃。在诱癌9周、15周每组分别取5只大鼠抽取外周血,EDTA抗凝,用流式细胞仪检测大鼠外周血中CD4+T细胞和CD4+CD25+调节性T细胞(Tr细胞)的细胞数,另留取血清ELISA法检测大鼠外周血IL-10的含量。结果甲基苄基亚硝胺诱导大鼠食管癌后大鼠外周血中CD4+T细胞比例显著下降,CD4+CD25+Tr细胞比例显著升高;此过程随诱癌时间而加重,各时间点与对照组比较差异均有显著性(P均<0.05);用药后9周、15周枸杞多糖治疗组CD4+CD25+Tr细胞占淋巴细胞百分比显著低于模型组(P<0.05),CD4+T细胞比例显著高于模型组(P<0.05);模型组大鼠血清IL-10水平显著高于正常对照组,经枸杞多糖治疗后显著下降。结论甲基苄基亚硝胺诱导大鼠食管癌后外周血中CD4+CD25+Tr细胞表达增强,IL-10分泌显著增加,枸杞多糖可有效抑制其表达,显著改善实验性食管癌大鼠细胞免疫功能障碍。
出处 《时珍国医国药》 CAS CSCD 北大核心 2010年第4期1016-1017,共2页 Lishizhen Medicine and Materia Medica Research
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