Anesth Analg:丙泊酚如何调节GABA受体的表面表达

2015-08-21 张森 译 MedSci原创

研究表明,全身麻醉药物丙泊酚可通过增强γ-氨基丁酸受体(GABAAR)的活性产生快速催眠镇静作用。然而,目前有关丙泊酚调节抑制性突触传递的分子机制的研究仍不成熟。本研究旨在探讨丙泊酚在调节GABAARs表面表达中的作用。 研究人员通过腹腔注射对C57BL/6小鼠丙泊酚进行全身麻醉。分离胚胎18天小鼠的海马椎体神经元,并用丙泊酚对其进行处理。使用细胞表面生物素标记、免疫印迹和酶联免疫吸附试验对细胞


研究表明,全身麻醉药物丙泊酚可通过增强γ-氨基丁酸受体(GABAAR)的活性产生快速催眠镇静作用。然而,目前有关丙泊酚调节抑制性突触传递的分子机制的研究仍不成熟。本研究旨在探讨丙泊酚在调节GABAARs表面表达中的作用。

研究人员通过腹腔注射对C57BL/6小鼠丙泊酚进行全身麻醉。分离胚胎18天小鼠的海马椎体神经元,并用丙泊酚对其进行处理。使用细胞表面生物素标记、免疫印迹和酶联免疫吸附试验对细胞膜上的蛋白质进行分析。对急性小鼠脑片中的海马细胞的电生理活动进行记录。通过免疫沉淀法对GABAARs和网格蛋白适配器蛋白2间的相互作用进行评价。通过体外激酶实验显示GABAARs的磷酸化作用。

结果显示,丙泊酚可促进细胞膜中 GABAARβ3亚基的积聚。丙泊酚调节通过蛋白激酶 Cε对GABAARβ3的磷酸化作用进行调节,而蛋白激酶 Cε可阻断GABAARβ3与衔接蛋白2的β-衔接亚基间的相互作用,从而导致了海马椎体神经元中受体内吞作用的抑制。与GABAARs表面水平的增加一致,丙泊酚提高了诱发及微型突触GABA受体电流。



本研究表明:丙泊酚通过影响GABAAR与衔接蛋白复合物AP2 的相互作用,减弱了GABAARs的内吞作用;并为丙泊酚抑制神经元兴奋性的调节机制提供了新的见解。

原始出处:

Yuwen Li,Yin Wu,Ruili Li,Chao Wang,Na Jia,Chao Zhao,Aidong Wen,and Lize Xiong.Propofol Regulates the Surface Expression of GABAA Receptors: Implications in Synaptic Inhibition Anesth Analg. 2015 Aug 3

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=127166, encodeId=64e712e16660, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Thu Sep 15 07:39:00 CST 2016, time=2016-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1633332, encodeId=46861633332e8, content=<a href='/topic/show?id=377824e1c0' target=_blank style='color:#2F92EE;'>#ANA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2471, encryptionId=377824e1c0, topicName=ANA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=434d22047430, createdName=AspirantSuo, createdTime=Wed Nov 18 15:41:00 CST 2015, time=2015-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2050474, encodeId=7ef520504e484, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Fri Jun 10 21:41:00 CST 2016, time=2016-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1700019, encodeId=c1531e0001928, content=<a href='/topic/show?id=295524e541' target=_blank style='color:#2F92EE;'>#Anal#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2475, encryptionId=295524e541, topicName=Anal)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=de3a29999500, createdName=经常头晕, createdTime=Tue Jun 07 11:41:00 CST 2016, time=2016-06-07, status=1, ipAttribution=)]
    2016-09-15 1e10c84am36(暂无匿称)

    文章不错,值得拜读

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=127166, encodeId=64e712e16660, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Thu Sep 15 07:39:00 CST 2016, time=2016-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1633332, encodeId=46861633332e8, content=<a href='/topic/show?id=377824e1c0' target=_blank style='color:#2F92EE;'>#ANA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2471, encryptionId=377824e1c0, topicName=ANA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=434d22047430, createdName=AspirantSuo, createdTime=Wed Nov 18 15:41:00 CST 2015, time=2015-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2050474, encodeId=7ef520504e484, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Fri Jun 10 21:41:00 CST 2016, time=2016-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1700019, encodeId=c1531e0001928, content=<a href='/topic/show?id=295524e541' target=_blank style='color:#2F92EE;'>#Anal#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2475, encryptionId=295524e541, topicName=Anal)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=de3a29999500, createdName=经常头晕, createdTime=Tue Jun 07 11:41:00 CST 2016, time=2016-06-07, status=1, ipAttribution=)]
    2015-11-18 AspirantSuo
  3. [GetPortalCommentsPageByObjectIdResponse(id=127166, encodeId=64e712e16660, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Thu Sep 15 07:39:00 CST 2016, time=2016-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1633332, encodeId=46861633332e8, content=<a href='/topic/show?id=377824e1c0' target=_blank style='color:#2F92EE;'>#ANA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2471, encryptionId=377824e1c0, topicName=ANA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=434d22047430, createdName=AspirantSuo, createdTime=Wed Nov 18 15:41:00 CST 2015, time=2015-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2050474, encodeId=7ef520504e484, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Fri Jun 10 21:41:00 CST 2016, time=2016-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1700019, encodeId=c1531e0001928, content=<a href='/topic/show?id=295524e541' target=_blank style='color:#2F92EE;'>#Anal#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2475, encryptionId=295524e541, topicName=Anal)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=de3a29999500, createdName=经常头晕, createdTime=Tue Jun 07 11:41:00 CST 2016, time=2016-06-07, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=127166, encodeId=64e712e16660, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Thu Sep 15 07:39:00 CST 2016, time=2016-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1633332, encodeId=46861633332e8, content=<a href='/topic/show?id=377824e1c0' target=_blank style='color:#2F92EE;'>#ANA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2471, encryptionId=377824e1c0, topicName=ANA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=434d22047430, createdName=AspirantSuo, createdTime=Wed Nov 18 15:41:00 CST 2015, time=2015-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2050474, encodeId=7ef520504e484, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Fri Jun 10 21:41:00 CST 2016, time=2016-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1700019, encodeId=c1531e0001928, content=<a href='/topic/show?id=295524e541' target=_blank style='color:#2F92EE;'>#Anal#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2475, encryptionId=295524e541, topicName=Anal)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=de3a29999500, createdName=经常头晕, createdTime=Tue Jun 07 11:41:00 CST 2016, time=2016-06-07, status=1, ipAttribution=)]
    2016-06-07 经常头晕

相关资讯

Br J Anaesth:丙泊酚可对杏仁核依赖的情绪记忆系统产生影响

亚临床剂量的丙泊酚可以导致顺行性遗忘(对造成失忆的事件后发生的事物发生遗忘的失忆症)。有研究表明杏仁核依赖的情绪记忆系统可调节整合海马对情绪唤醒及神经体液压力的反应,然而目前仍不清楚丙泊酚如何对杏仁核依赖的情绪记忆系统产生影响。本研究使用功能性核磁共振成像技术,探讨丙泊酚对人情绪记忆系统的影响。 在本次研究中,35位健康受试者被随机分为丙泊酚组(估算脑内浓度达到0.90μg/ml)和安慰剂对照组