杨 茜 胡沙沙 孙向荣 郭菲菲 公衍玲 祝 海 逄明杰 徐 珞.NUCB2/nesfatin-1 对小鼠摄食行为的调控及机制[J].现代生物医学进展英文版,2015,15(2):236-240. |
NUCB2/nesfatin-1 对小鼠摄食行为的调控及机制 |
Regulatory Effect of NUCB2/nesfatin-1 on Feeding Behavior in Mice and thePotential Mechanism |
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DOI: |
中文关键词: 进食 下丘脑 小鼠 nesfatin-1 饱足 |
英文关键词: Food intake Hypothalamus Mouse Nesfatin-1 Satiation |
基金项目:国家自 然科学基金项目( 31 071 014, 811 00260, 81270460, 81 300281);青岛市科技局项目( 1 3-1 -4-1 70-jch) |
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中文摘要: |
目的: 探讨 NUCB2/nesfatin-1 对小鼠摄食行为的调控及机制。 方法: 利 用 侧脑室埋管, 免疫组化染色等方法,探讨侧脑室和外
周 注射 nesfatin-1 对小鼠摄食行为的影响。 结果: 侧脑室注射不同 剂 量 nesfatin-1 (0.3 滋g, 1 滋g, 3 滋g), 注药后 4 h 夜间 进食量明
显减少, 且呈显著剂 量依赖关系 (t=2.61 ~4.78, P<0.05~0.01), 侧脑室注射 3 滋g nesfatin-1, 小鼠前 3 小时累 积摄食量明 显降低(t=8.
69~10.73
, P<0.01),且持续降低 12 小时(t=2.64, P< 0.05),同时餐间间隔时间明显延长(t=2.66, P< 0.05),每分钟 /1 -4 h 进食量明显降
低 (t=2.63, P< 0.05), 且进食每克 食物 所用时 间 明 显 增 加 (t=3.02, P< 0.05)。 在 下 丘脑 弓 状 核 ,外 侧 区 和 背 内 侧 核均有
NUCB2/nesfatin-1 免疫阳性神经元表达。 皮下或腹腔注射 nesfatin-1, 小鼠进食量和进食行为 均无显著改变( P>0.05)。 结论: 中枢
nesfatin-1 可抑制小鼠摄食行为。x |
英文摘要: |
Objective:To investigate the regulatory effect of NUCB2/nesfatin-1 on feeding behavior in mice and the potential
mechanism.Methods:Nesfatin-1 was injected intracerebroventricularly (icv) by lateral ventricle buried pipe and peripherally
(intraperitoneal, i.p, subcutaneous, s.c) on mice. Nesfatin-1 immunostaining was performed.Results:Nesfatin-1 (0.3, 1 or 3 滋g/mouse,
icv) caused a dose-dependent reduction of 4-h dark phase food intake (t=2.61~4.78, P<0.05~0.01 ). Nesfatin-1 (3 滋g/mouse, icv) led to
the reduction of 3-h cumulative food intake (t=8.69~10.73,P<0.01 ) lasting for 12 h (t=2.64, P<0.05), significantly increased inter-meal
intervals (t=2.66, P<0.05) and time spent in meals (t=3.02, P<0.05) and significantly decreased meal size (t=2.63, P<0.05).
NUCB2/nesfatin-1 -immunopositive neurons were found in the hypothalamic arcuate nucleus, lateral and dorsomedial hypothalamic
nuclei. When injected peripherally, neither food intake nor any feeding microstructure parameters were altered.Conclusion:The central
nesfatin-1 leads to a dose-dependent reduction of food intake in mice. |
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