Implanted tumor growth is suppressed and survival is prolonged in sixty percent of food-restricted mice.

Implanted tumor growth is suppressed and survival is prolonged in sixty percent of food-restricted mice.
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百分之六十的食物限制小鼠的植入肿瘤生长受到抑制,存活时间延长。

DOI:
10.1093/jn/130.1.111
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发表时间:
2000
期刊:
The Journal of nutrition
影响因子:
--
通讯作者:
Yoshihisa Nakano
Yoshihisa Nakano
中科院分区:
--
文献类型:
--
作者:
J. Matsuzaki;R. Yamaji;K. Kiyomiya;Masaru Kurebe;H. Inui;Yoshihisa Nakano

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为了检查限食对荷瘤状态下免疫功能的影响,在8周龄时将小鼠分为对照组(喂食5.0 g饮食/d; 71 kJ/d)和60%限食组(喂食3.0 g饮食/d; 43 kJ/d),4周后,皮内接种L1210肿瘤细胞。限食组小鼠肿瘤生长受到明显抑制,平均存活时间延长(P < 0.05)。两种抗肿瘤细胞因子干扰素-γ(IFN-γ)和肿瘤坏死因子-α(TNF-α)的血浆浓度在肿瘤接种前限食组高于对照组(P < 0. 05)。05)。此外,食物限制的小鼠在肿瘤接种后具有显著更高的IFN-γ和TNF-α的血浆水平,尽管治疗显著增加了两组中的这些细胞因子水平。荷瘤限食小鼠脾自然杀伤细胞毒活性也高于对照组(P < 0.05)。食物限制的小鼠具有强的抗肿瘤免疫力,结果,这些小鼠的肿瘤生长受到抑制,存活时间延长。
To examine the effect of food restriction on immune functions in the tumor-bearing state, mice were divided into a control group (fed 5.0 g diet/d; 71 kJ/d) and a 60% food-restricted group (fed 3.0 g diet/d; 43 kJ/d) at 8-wk of age, and 4 wk later, L1210 tumor cells were inoculated intradermally. In the food-restricted mice, tumor growth was significantly suppressed, and mean survival time after the tumor inoculation was prolonged (P < 0.05). The plasma concentrations of two antitumor cytokines, interferon-gamma (IFN-gamma) and tumor necrosis factor-alpha (TNF-alpha), were greater in the food-restricted group before tumor inoculation (P < 0. 05). Furthermore, the food-restricted mice had significantly higher plasma levels of IFN-gamma and TNF-alpha after tumor inoculation, although the treatment significantly increased these cytokine levels in both groups. Splenic natural killer cell cytotoxicity was also higher in the tumor-bearing food-restricted mice than in controls (P < 0.05). Food-restricted mice have strong antitumor immunity, and as a result, tumor growth is suppressed and survival time is prolonged in these mice.
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DOI: --
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