皮质前额叶和海马PPAR-α通路参与N-棕榈酰乙醇胺抗大鼠抑郁样行为

被引:2
作者
李瑞瑞
张露文
张渺
于海玲
机构
[1] 延边大学医学院
关键词
抑郁症; 海马; N-棕榈酰乙醇胺; 皮质前额叶; 过氧化物酶体增殖物激活α受体;
D O I
暂无
中图分类号
R749.4 [情感性精神病];
学科分类号
100204 [神经病学];
摘要
目的 探讨皮质前额叶(PFC)和海马中α型过氧化物酶体增殖物激活受体(PPARα)参与N-棕榈酰乙醇胺(PEA)调控慢性应激诱导大鼠抑郁样行为的机制。方法 将50只SD大鼠按照随机数字表法分为正常对照组、模型组、氟西汀组(阳性药物对照,10 mg/kg)、PEA组(10 mg/kg)和PEA+MK886组(PEA 10 mg/kg+MK886 3 mg/kg),每组10只。除正常对照组外,其余各组大鼠给予慢性不可预见性温和应激(CUMS)和孤养应激干预4周建立抑郁模型,建模1周时分组给予相应药物干预4周。第36天麻醉大鼠后取脑组织标本,通过免疫组化染色观察皮质前额叶(PFC)和海马中多唾液酸-神经细胞黏附分子(PSA-NCAM)蛋白表达情况;酶联免疫吸附试验(ELISA)检测大鼠PFC中脑源性神经营养因子(BDNF)、胶质细胞源性神经营养因子(GDNF)的表达,及PFC和海马中肿瘤坏死因子-α(TNF-α)、白细胞介素1β(IL-1β)和核转录因子-κB(NF-κB)的水平。结果 PEA上调了CUMS抑郁模型大鼠PFC和海马中PSA-NCAM及PFC中BDNF和GDNF蛋白表达,下调了PFC和海马中TNF-α、IL-1β和NF-κB水平。与PEA组相比,PEA+MK886组大鼠PFC和海马中PSA-NCAM、PFC中BDNF和GDNF的表达下调,PFC和海马中TNF-α、IL-1β、NF-κB的水平增加。结论 PEA可通过调控PFC和海马的PPARα通路促进神经可塑性、缓解神经炎症,发挥神经保护作用,从而改善CUMS大鼠的抑郁样行为。
引用
收藏
页码:248 / 253
页数:6
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