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-  2015 

氟西汀对抑郁大鼠模型海马CA1区、CA3区及齿状回区神经生长因子表达的影响 Effect of Fluoxetine on Nerve Growth Factor Expression in Hippocampus CA1,CA3 and DG of Rat Depression Model

Keywords: 氟西汀,抑郁,慢性温和不可预见性应激,神经生长因子,免疫组化,海马

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Abstract:

目的:建立慢性温和不可预见性应激(CUMS)大鼠抑郁模型,研究氟西汀对CUMS大鼠海马CA1区、CA3区及齿状回区神经生长因子(NGF)表达的影响。方法:采用CUMS方法建立抑郁大鼠模型。氟西汀(3mg/kg)在造模完成后灌胃给药,每天一次,连续21d。旷场实验、强迫游泳实验检测大鼠行为学变化;免疫组化检测海马CA1、CA3及齿状回NGF的分布与表达。结果:与正常组相比,模型组大鼠水平运动和垂直运动减少(P<0.01),静止不动的时间较正常组增加(P<0.01)。海马CA1区、CA3区及齿状回区NGF表达强度低,阳性颗粒数目少,且着色浅淡。与模型组比较,氟西汀能明显改善CUMS大鼠的抑郁行为,增高CUMS大鼠海马NGF、细胞阳性表达。结论:抑郁大鼠海马NGF含量的高低与抑郁症的发生发展密切相关,促进海马细胞NGF蛋白的表达,保护神经的可塑性可能是氟西汀抗抑郁的机制之一

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