A polysaccharide from Salvia miltiorrhiza Bunge improves immune function in gastric cancer rats.

A polysaccharide from Salvia miltiorrhiza Bunge improves immune function in gastric cancer rats.
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丹参多糖可改善胃癌大鼠的免疫功能。

DOI:
10.1016/j.carbpol.2014.04.061
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发表时间:
2014-10
期刊:
Carbohydr Polym
影响因子:
--
通讯作者:
He, Xianli
He, Xianli
中科院分区:
其他
文献类型:
--
作者:
Wu, Tao;Du, Xilin;Bao, Guoqiang;He, Xianli

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采用N-甲基-N′-硝基-亚硝基胍(MNNG)诱发大鼠胃癌模型,研究了丹参根中性多糖组分(SMPA)的免疫增强作用。SMPA(200 mg/kg)处理不仅增加了体重,而且改善了免疫器官指数。此外,对胃癌大鼠各种免疫活性的研究表明,SMPA可显著促进脾细胞增殖,促进抗炎细胞因子的产生,(IL-2、IL-4和IL-10)产生,抑制促炎细胞因子(IL-6和TNF-α)分泌,增强自然杀伤(NK)细胞和细胞毒性T淋巴细胞(CTL)的杀伤活性,增强胃癌大鼠巨噬细胞的吞噬功能。此外,SMPA还能明显提高胃癌大鼠脾细胞内颗粒酶B和IFN-γ的水平。总之,这些结果表明,SMPA可以作为一种有效的免疫调节剂,并可能作为一个潜在的补充来源,胃癌治疗的探索。
A neutral polysaccharide fraction (SMPA) prepared from the roots ofSalvia miltiorrhizaby DEAE-cellulose and Sephadex G-100 chromatography was tested for its immune enhancing function inN-methyl-N′-nitro-nitrosoguanidine (MNNG)-induced gastric cancer rats by intragastric administration. SMPA (200 mg/kg) treatment not only increased the body weight, but also improved the immune organ indices. Furthermore, studies of various immunological activities in gastric cancer rats revealed that SMPA significantly stimulated splenocyte proliferation, promoted anti-inflammatory cytokines (IL-2, IL-4 and IL-10) production, inhibited pro-inflammatory cytokine (IL-6 and TNF-α) secretion, augmented the killing activity of natural killer (NK) cells and cytotoxic T lymphocytes (CTL), and increased phagocytotic function of macrophages in gastric cancer rats. In addition, SMPA administration evidently elevated total intracellular granzyme-B and IFN-γ levels produced by splenocytes in gastric cancer rats. Taken together, these results suggested that SMPA could act as an effective immunomodulator and might be explored as a potential supplemental source for gastric cancer therapy.
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