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机构地区:[1]南京医科大学附属脑科医院精神科,南京210029
出 处:《中华行为医学与脑科学杂志》2012年第1期10-12,共3页Chinese Journal of Behavioral Medicine and Brain Science
基 金:基金项目:南京市医学发展项目(YKK10115)
摘 要:目的探讨慢性应激抑郁状态对大鼠海马神经干细胞的影响。方法应用慢性不可预知温和应激和孤养法建立抑郁模型,分为对照组、CUMS14d组、CUMS28d组,采用免疫组化、免疫荧光,测定大鼠海马神经干细胞的增殖、存活和分化的改变。结果海马神经干细胞增殖:与对照组(2919.50±188.80)比较,14dCUMS组(2254.17±164.41)和28dCUMS组(1900.33±104.10)海马齿状回BrdU阳性细胞数均减少,差异有统计学意义(P〈0.01)。海马神经干细胞存活:与对照组(2404.50±148.77)相比,CUMS28d组(1845.33±126.88)BrdU阳性细胞数明显减少,差异有统计学意义(P〈0.01)。海马神经干细胞分化:与对照组[NeuN/BrdU(71.63±10.21),GFAP/BrdU(14.34±2.03)]比较,CUMS28d组[NeuN/BrdU(69.11±11.30),GFAP/BrdU(17.27±2.93)]细胞分化无明显变化(P〉0.05)。结论慢性应激抑郁模型大鼠海马齿状回神经干细胞的增殖和存活受到抑制,但干细胞的分化无明显改变。Objective To investigate the effect of chronic stress on hippocampal neurogenesis. Method- s Chronic unpredictable mild stress(CUMS) was used as animal model to provoke a decrease of neurogenesis in hippocampus. Simultaneously, hippocampal neurogenesis was monitored by assessing cell proliferation, survival, and differentiation. All rats were divided into control group, 14 d CUMS group, 28 d CUMS group. Results The cell proliferation in 14d CUMS group(2254. 17 ± 164.41 ) or 28d CUMS( 1900.33 ±104.10) group were decreased contrast to the control (2919.50 ± 188.80) (P 〈 0.01 ). The cell survival in 28 d CUMS group (1845.33 ± 126.88 ) were decreased contrast to the control (2404.50 ± 148.77 ) (P 〈 0.01 ). The cell differentiation had no difference between control group and CUMS group( NeuN/BrdU(71.63 ± 10.21 ) vs (69.11 ± 11.30) ,GFAP/ BrdU ( 14.34 ± 2.03 ) vs ( 17.27 ±2.93 ) ) (P 〉 0. 05 ). Conclusion These results suggest that chronic stress decreases cell proliferation and survival, but does not affect the phenotype of newborn cells in the hippoeampus.
关 键 词:慢性不可预知温和应激模型 神经干细胞 海马
分 类 号:R329.2[医药卫生—人体解剖和组织胚胎学]
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