海马pCREB/BDNF通路参与5-羟色胺再摄取抑制剂对成年雄性大鼠爆炸创伤性脑损伤的治疗作用

IF 2.7 3区 医学 Q3 NEUROSCIENCES
Xiaolin Fan, Hong Wang, Xiaoqiang Lv, Qi Wang, Boya Yu, Xiao Li, Liang Li, Yuhao Zhang, Ning Ma, Qing Lu, Airong Qian, Junhong Gao
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引用次数: 0

摘要

背景:爆炸创伤性脑损伤(bTBI)在急性期和慢性期均可导致抑郁样行为。SSRIs通过增加海马中的5-羟色胺(5-HT)和脑源性神经营养因子(BDNF),显著缓解创伤性脑损伤(TBI)动物模型中的抑郁样行为。然而,ssri类药物对脑外伤所致抑郁的治疗效果尚不清楚。目的:本研究旨在探讨ssri类药物对脑外伤模型抑郁样行为的治疗作用。方法:通过增加爆炸超压(BOP)并腹腔注射氟西汀和艾司西酞普兰SSRIs 28 d,建立轻度TBI大鼠模型。结果:bop暴露后第14天,SSRIs治疗的大鼠表现出抑郁样行为的减少。这一发现伴随着海马中较高的5-羟色胺水平和齿状回中巢蛋白阳性细胞数量的增加。此外,接受SSRIs治疗的大鼠在bTBI后的第7、14和28天,海马中pCREB和BDNF蛋白表达增加。结论:总体而言,我们的研究结果表明,ssri诱导的轻度bTBI后抑郁样行为的恢复与海马5-HT水平、pCREB和BDNF表达上调以及神经发生有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The pCREB/BDNF Pathway in the Hippocampus Is Involved in the Therapeutic Effect of Selective 5-HT Reuptake Inhibitors in Adult Male Rats Exposed to Blast Traumatic Brain Injury.

Background: Blast traumatic brain injury (bTBI) can result in depression-like behaviors in the acute and chronic phases. SSRIs have been shown to significantly alleviate depression-like behaviors in animal models of traumatic brain injury (TBI) by increasing serotonin (5-HT) and brain-derived neurotrophic factor (BDNF) in the hippocampus. However, the therapeutic effects of SSRIs on depression caused by bTBI remain unclear.

Objective: Therefore, this study was aimed at investigating the therapeutic effects of SSRIs on depression-like behaviors in bTBI models.

Methods: We created a rat model to study mild TBI by subjecting rats to increased blast overpressures (BOP) and injecting fluoxetine and escitalopram SSRIs intraperitoneally for 28 days.

Results: On day 14 post-BOP exposure, rats treated with SSRIs showed decreased depression-like behaviors. This finding was accompanied by higher 5-HT levels in the hippocampus and increased numbers of Nestin-positive cells in the dentate gyrus. Furthermore, rats treated with SSRIs exhibited increased pCREB and BDNF protein expression in the hippocampus on days 7, 14, and 28 after bTBI.

Conclusions: Overall, our findings indicate that SSRI-induced recovery from depression-like behaviors after mild bTBI is associated with the upregulation of 5-HT levels, pCREB and BDNF expression, and neurogenesis in the hippocampus.

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来源期刊
Brain Sciences
Brain Sciences Neuroscience-General Neuroscience
CiteScore
4.80
自引率
9.10%
发文量
1472
审稿时长
18.71 days
期刊介绍: Brain Sciences (ISSN 2076-3425) is a peer-reviewed scientific journal that publishes original articles, critical reviews, research notes and short communications in the areas of cognitive neuroscience, developmental neuroscience, molecular and cellular neuroscience, neural engineering, neuroimaging, neurolinguistics, neuropathy, systems neuroscience, and theoretical and computational neuroscience. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.
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