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Front Aging Neurosci:Lipocalin-2 在卒中后抑郁模型中调节海马小胶质细胞的激活

2021-12-21 brainnew神内神外 网络

海马体参与学习、记忆、情绪等基本功能,海马的病理改变是各种神经疾病的基础,特别是抑郁症、痴呆症和癫痫



卒中后抑郁症(PSD)是卒中后遗症之一,严重影响卒中幸存者的生活质量,并与高死亡率相关。其病理可能是多因素的,涉及中风和抑郁症的发病机制的组合,目前研究尚未阐明其发病机制,严重影响对PSD的预防和治疗。抑郁症被描述为一种与小胶质细胞相关的疾病,除了细胞过度活化和细胞数量增加外,在一些抑郁症患者中还观察到小胶质细胞数量减少和衰老,而小胶质细胞激活与PSD密切相关。

Lipocalin-2 (LCN2) 是高度异质性的分泌蛋白 lipocalin 家族的成员,与细胞分化、细胞凋亡和细胞摄取铁的调节有关。LCN2由受伤的神经元释放,激活小胶质细胞和星形胶质细胞,使其具有潜在的促进恢复表型。小胶质细胞激活在PSD中起重要作用,而LCN2与小胶质细胞激活密切相关;但LCN2在PSD小胶质细胞激活中的确切作用和机制仍不清楚。来自浙江大学第一附属医院的研究团队旨在确定LCN2如何调节PSD中的小胶质细胞活化,为PSD的发病机制提供新的思路。

1、卒中后抑郁组1-3周LCN2浓度持续升高

与假手术(PS)组相比,PSD组血清LCN2浓度在术后1、2、3周显著升高。PSD组血清LCN2浓度在术后第2周较术后1周显着降低,在第3周升高(图1 A)。与生理盐水(Sham)组和PS组相比,PSD组LCN2的相对mRNA表达量显着增加(图1B)。PSD组中,LCN2 mRNA 左脑半球的相对表达量较右脑半球显著降低,右侧脑半球海马区LCN2 mRNA较左侧脑显着增加(图 1C);PS组不同脑区LCN2 mRNA相对表达量无显着差异(图1D)。
与中风后抑郁大鼠的其他区域相比,海马区域的 Iba1 蛋白水平增加。
图1 三组血清 LCN2 水平

2、中风后抑郁大鼠海马区Iba1、P38 MAPK蛋白水平和 PP 38/P38 比值增加

图2显示PSD组海马区Iba1、P38 MAPK和PP 38 MAPK相对蛋白水平,PSD组较sham组和PS组而言上述蛋白表达明显升高。与PS组相比,PSD组Iba1相对蛋白水平、P38 MAPK蛋白水平和pP38/P38MAPK比值均显着升高(图2)。
图2
(A)三组Iba1、P38 MAPK 和 PP38 MAPK 的印迹。(B) Iba1 的相对蛋白质水平(C) P38 MAPK 的相对蛋白质水平 (D) PP38/P38 MAPK比值

3、Lipocalin-2 刺激后小胶质细胞的变化

1 μg/ml LCN2处理24 h后,LCN2-MG组上清液中NO浓度较Con-MG组上清液显着升高(图3A)。LCN2-MG组明显长于 Con-MG组(图 3B),并且比 Con-MG组迁移的更多(图 3C)。LCN2-MG吞噬微球数量明显高于Con-MG组(图3D)。图3E、F显示 LCN2 增强了初级小胶质细胞的吞噬能力。最后,Lipocalin-2 处理的小胶质细胞中 Iba1、P38 MAPK 和 PP38 MAPK 蛋白水平增加。

图3 Lipocalin-2 刺激后小胶质细胞的变化

综上,作者研究发现LCN2可能通过P38/ MAPK 通路调节海马小胶质细胞的激活。

 

海马体参与学习、记忆、情绪等基本功能,海马的病理改变是各种神经疾病的基础,特别是抑郁症、痴呆症和癫痫。因此,研究海马小胶质细胞活化对于阐明PSD的机制具有重要意义。在之前的研究中,作者分析了PSD大鼠海马区、左右半脑小胶质细胞激活标志物的表达情况,发现海马比其他大脑区域有更多的小胶质细胞激活, PSD组大鼠海马区的小胶质细胞激活标志物 Iba1 的蛋白质水平显著增加。这表明海马的小胶质细胞在 PSD 中被激活,因此重点研究海马体。

 

在LCN2刺激后,初级小胶质细胞表现出明显的改变:小胶质细胞释放的NO量、小胶质细胞的长度、海马小胶质细胞的吞噬能力和迁移能力均显着增加。由于 P38 MAPK 和 LCN2 与小胶质细胞激活的密切关系,作者推测 LCN2可能通过P38/ MAPK 诱导小胶质细胞激活。因此,作者评估了 LCN2 刺激后海马小胶质细胞中 P38 MAPK 蛋白水平的变化,发现P38 MAPK 的相对蛋白水平显着增加。此外,PP38 MAPK蛋白水平也表现出同样显着的增加。P38 MAPK 和 PP38 MAPK 蛋白水平在PSD大鼠的海马中显示出与在培养的原代小胶质细胞中相同的变化。体外和体内结果均表明,LCN2通过在P38 MAPK途径调节海马小胶质细胞活化。

 

但是作者的研究存在局限性,作者研究的是整个海马区域,并没有区分不同的功能区域,所以需要进一步分析海马不同功能区域小胶质细胞激活的情况。

 

 

 

参考文献

Li Wei, Yupeng Du, Yirui Xie, Xiaopeng Yu, Hui Chen and Yunqing Qiu,Lipocalin-2 Regulates Hippocampal Microglial Activation in Poststroke Depression,Front Aging Neurosci., 13 December 2021 | https://doi.org/10.3389/fnagi.2021.798335.
编译作者:  原代美少女 (Brainnews创作团队) 
校审: Simon (Brainnews编辑部)

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    2022-02-18 smlt2008
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    2021-12-23 lsndxfj
  4. [GetPortalCommentsPageByObjectIdResponse(id=1671453, encodeId=1d6016e14538f, content=<a href='/topic/show?id=9f4e360191a' target=_blank style='color:#2F92EE;'>#卒中后#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36019, encryptionId=9f4e360191a, topicName=卒中后)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ff7426824786, createdName=waiwai3039, createdTime=Fri Jan 28 14:43:27 CST 2022, time=2022-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1927951, encodeId=370f192e951ae, content=<a href='/topic/show?id=f7fb13216dc' target=_blank style='color:#2F92EE;'>#OCA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13216, encryptionId=f7fb13216dc, topicName=OCA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Fri Feb 18 21:43:27 CST 2022, time=2022-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1364772, encodeId=25491364e7238, content=<a href='/topic/show?id=7c5615628ad' target=_blank style='color:#2F92EE;'>#ROS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15628, encryptionId=7c5615628ad, topicName=ROS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1389254, encodeId=30f8138925439, content=<a href='/topic/show?id=acf3840e459' target=_blank style='color:#2F92EE;'>#胶质细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84074, encryptionId=acf3840e459, topicName=胶质细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/DC48AC6B5FFD609EED5594C15A97B420/100, createdBy=57dc2500034, createdName=ms1692212821629096, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1510858, encodeId=c8f1151085854, content=<a href='/topic/show?id=f98210002a8' target=_blank style='color:#2F92EE;'>#IPO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10002, encryptionId=f98210002a8, topicName=IPO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0a1910256881, createdName=dzx0922892, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082540, encodeId=be6d108254032, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Dec 21 13:03:52 CST 2021, time=2021-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082538, encodeId=e0fb1082538fa, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Tue Dec 21 12:57:22 CST 2021, time=2021-12-21, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1671453, encodeId=1d6016e14538f, content=<a href='/topic/show?id=9f4e360191a' target=_blank style='color:#2F92EE;'>#卒中后#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36019, encryptionId=9f4e360191a, topicName=卒中后)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ff7426824786, createdName=waiwai3039, createdTime=Fri Jan 28 14:43:27 CST 2022, time=2022-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1927951, encodeId=370f192e951ae, content=<a href='/topic/show?id=f7fb13216dc' target=_blank style='color:#2F92EE;'>#OCA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13216, encryptionId=f7fb13216dc, topicName=OCA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Fri Feb 18 21:43:27 CST 2022, time=2022-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1364772, encodeId=25491364e7238, content=<a href='/topic/show?id=7c5615628ad' target=_blank style='color:#2F92EE;'>#ROS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15628, encryptionId=7c5615628ad, topicName=ROS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1389254, encodeId=30f8138925439, content=<a href='/topic/show?id=acf3840e459' target=_blank style='color:#2F92EE;'>#胶质细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84074, encryptionId=acf3840e459, topicName=胶质细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/DC48AC6B5FFD609EED5594C15A97B420/100, createdBy=57dc2500034, createdName=ms1692212821629096, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1510858, encodeId=c8f1151085854, content=<a href='/topic/show?id=f98210002a8' target=_blank style='color:#2F92EE;'>#IPO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10002, encryptionId=f98210002a8, topicName=IPO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0a1910256881, createdName=dzx0922892, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082540, encodeId=be6d108254032, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Dec 21 13:03:52 CST 2021, time=2021-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082538, encodeId=e0fb1082538fa, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Tue Dec 21 12:57:22 CST 2021, time=2021-12-21, status=1, ipAttribution=)]
    2021-12-23 dzx0922892
  6. [GetPortalCommentsPageByObjectIdResponse(id=1671453, encodeId=1d6016e14538f, content=<a href='/topic/show?id=9f4e360191a' target=_blank style='color:#2F92EE;'>#卒中后#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36019, encryptionId=9f4e360191a, topicName=卒中后)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ff7426824786, createdName=waiwai3039, createdTime=Fri Jan 28 14:43:27 CST 2022, time=2022-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1927951, encodeId=370f192e951ae, content=<a href='/topic/show?id=f7fb13216dc' target=_blank style='color:#2F92EE;'>#OCA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13216, encryptionId=f7fb13216dc, topicName=OCA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Fri Feb 18 21:43:27 CST 2022, time=2022-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1364772, encodeId=25491364e7238, content=<a href='/topic/show?id=7c5615628ad' target=_blank style='color:#2F92EE;'>#ROS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15628, encryptionId=7c5615628ad, topicName=ROS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1389254, encodeId=30f8138925439, content=<a href='/topic/show?id=acf3840e459' target=_blank style='color:#2F92EE;'>#胶质细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84074, encryptionId=acf3840e459, topicName=胶质细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/DC48AC6B5FFD609EED5594C15A97B420/100, createdBy=57dc2500034, createdName=ms1692212821629096, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1510858, encodeId=c8f1151085854, content=<a href='/topic/show?id=f98210002a8' target=_blank style='color:#2F92EE;'>#IPO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10002, encryptionId=f98210002a8, topicName=IPO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0a1910256881, createdName=dzx0922892, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082540, encodeId=be6d108254032, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Dec 21 13:03:52 CST 2021, time=2021-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082538, encodeId=e0fb1082538fa, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Tue Dec 21 12:57:22 CST 2021, time=2021-12-21, status=1, ipAttribution=)]
    2021-12-21 1209e435m98(暂无昵称)

    学习了,谢谢分享

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1671453, encodeId=1d6016e14538f, content=<a href='/topic/show?id=9f4e360191a' target=_blank style='color:#2F92EE;'>#卒中后#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36019, encryptionId=9f4e360191a, topicName=卒中后)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ff7426824786, createdName=waiwai3039, createdTime=Fri Jan 28 14:43:27 CST 2022, time=2022-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1927951, encodeId=370f192e951ae, content=<a href='/topic/show?id=f7fb13216dc' target=_blank style='color:#2F92EE;'>#OCA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13216, encryptionId=f7fb13216dc, topicName=OCA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Fri Feb 18 21:43:27 CST 2022, time=2022-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1364772, encodeId=25491364e7238, content=<a href='/topic/show?id=7c5615628ad' target=_blank style='color:#2F92EE;'>#ROS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15628, encryptionId=7c5615628ad, topicName=ROS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1389254, encodeId=30f8138925439, content=<a href='/topic/show?id=acf3840e459' target=_blank style='color:#2F92EE;'>#胶质细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84074, encryptionId=acf3840e459, topicName=胶质细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/DC48AC6B5FFD609EED5594C15A97B420/100, createdBy=57dc2500034, createdName=ms1692212821629096, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1510858, encodeId=c8f1151085854, content=<a href='/topic/show?id=f98210002a8' target=_blank style='color:#2F92EE;'>#IPO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10002, encryptionId=f98210002a8, topicName=IPO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0a1910256881, createdName=dzx0922892, createdTime=Thu Dec 23 00:43:27 CST 2021, time=2021-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082540, encodeId=be6d108254032, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Dec 21 13:03:52 CST 2021, time=2021-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1082538, encodeId=e0fb1082538fa, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Tue Dec 21 12:57:22 CST 2021, time=2021-12-21, status=1, ipAttribution=)]
    2021-12-21 yangchou

    好文章,谢谢分享。

    0

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背景:脑源性神经营养因子(BDNF)基因多态性作为卒中后抑郁的潜在基因,得到研究,已知其受体和神经营养因子酪氨酸激酶受体B(TrkB)与抑郁症相关。然而,尚未有数据报告PSD和TrkB基因多态性的研究。这篇研究旨在调查TrkB多态性是否与PSD相关。方法:招募312名抑郁症患者(PSD患者)和472个非抑郁症患者为对照组(非PSD患者)。所有患者均采用汉密尔顿抑郁量表(HAMD)评定抑郁严重程度,

PLoS One:食欲紊乱和疲劳可能是卒中后抑郁早期表现

脑卒中后抑郁(PSD)是可能会导致不良预后的一种关键的并发症。然而,在脑卒中急性期PSD,也就是说在卒中后2周或3周,由于共发病而被忽视了。本研究旨在揭示在急性期PSD的突出症状,在发病后1周和1个月后颅内出血(ICH)或脑梗塞(BI)患者的填写抑郁问卷(快速自评抑郁症状:QIDS-SR)。排除意识障碍或失语的患者。49例脑出血患者及222例BI患者在1周,ICH患者在27天,BI患者在1个月时,

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