NATURE:神经和脂肪组织靠什么交流?

2020-07-24 MedSci原创 MedSci原创

瘦素基因(ob)的突变会导致代谢紊乱,包括严重肥胖,以及产热和溶脂的缺陷,这两者都是由交感神经系统调节的脂肪组织功能。然而,至今为止,我们对于这些交感神经相关的异常的机制仍然不清楚。

瘦素基因(ob)的突变会导致代谢紊乱,包括严重肥胖,以及产热和溶脂的缺陷,这两者都是由交感神经系统调节的脂肪组织功能。然而,至今为止,我们对于这些交感神经相关的异常的机制仍然不清楚。

此外,慢性瘦素给药可逆转脂肪组织的这些异常,但其根本机制仍有待发现。

在这里,研究人员报告称,ob/ob小鼠以及耐瘦素饮食诱导的肥胖小鼠,皮下白色和棕色脂肪组织的交感神经支配显著减少。慢性瘦素治疗ob/ob小鼠可恢复脂肪组织中交感神经的支配,而这又是纠正相关功能缺陷所必需的。

瘦素对神经支配的影响是通过下丘脑弓状核中的agouti相关肽和亲opiomelanocortin神经元介导的。删去任一群体中编码瘦素受体的基因,都会导致对脂肪的支配减少。

这些agouti相关肽和opiomelanocortin神经元通过下丘脑室旁核的脑源性神经营养因子表达神经元(BDNFPVH)起作用。

删除BDNFPVH可钝化瘦素对神经支配的影响。

这些数据表明,瘦素信号通过一条自上而下的神经通路调控脂肪组织交感结构的可塑性,该通路对能量稳态至关重要。

 

原始出处:

Putianqi Wang et al. A leptin–BDNF pathway regulating sympathetic innervation of adipose tissue, Nature (2020). 

 

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    2020-08-18 liye789132251
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    2020-08-27 14818eb4m67暂无昵称

    学习了

    0

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    2020-07-24 1240394fm61暂无昵称

    学习了

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1884485, encodeId=72c7188448508, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Aug 18 17:27:52 CST 2020, time=2020-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=813764, encodeId=95cd813e6418, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=64245268311, createdName=14818eb4m67暂无昵称, createdTime=Thu Aug 27 08:09:29 CST 2020, time=2020-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1345813, encodeId=c7a413458135d, content=<a href='/topic/show?id=f8c5843e3c5' target=_blank style='color:#2F92EE;'>#脂肪组织#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84373, encryptionId=f8c5843e3c5, topicName=脂肪组织)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=66962500501, createdName=yige2004, createdTime=Sun Jul 26 11:27:52 CST 2020, time=2020-07-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=804389, encodeId=dcd380438934, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b972455532, createdName=1240394fm61暂无昵称, createdTime=Fri Jul 24 23:05:58 CST 2020, time=2020-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=804387, encodeId=34c080438ea3, content=诸多生化功能尚未完全了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200529/3611e9bb629c4e5b81fbd8ce784b06cc/128487eae357460bb98f67d86230c218.jpg, createdBy=ab235268530, createdName=神盾医疗局局长Jack, createdTime=Fri Jul 24 23:02:18 CST 2020, time=2020-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=804379, encodeId=3b5e8043e9c3, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Fri Jul 24 21:56:28 CST 2020, time=2020-07-24, status=1, ipAttribution=)]
    2020-07-24 神盾医疗局局长Jack

    诸多生化功能尚未完全了解

    0

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    2020-07-24 1209e435m98(暂无昵称)

    学习了,谢谢分享

    0

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已有的研究显示,肥胖的患病率随着人类和啮齿动物的年龄增加而增加。与年龄相关的肥胖的特征在于瘦素抵抗,并且与代谢紊乱的风险增加有关。

Nat Med:为什么胖了?或许是因为瘦素基因失调

肥胖是一种疾病,影响着全球6.5亿人。当我们看着体重秤上的数字感慨,非常想知道为什么会变胖,为什么我们会比别人更容易胖。科学家们也在试图找出答案。

ADA 2019:肥胖研究有多火?ADA杰出科学成就奖得主就是因为这个获奖

6月10日上午,2019年ADA杰出科学成就奖授予Sadaf Farooqi博士,她是英国剑桥大学Wellcome-MRC代谢科学研究所Wellcome Trust首席研究员和代谢与医学教授。

Am J Respir Crit Care:新方法可有效治疗睡眠呼吸困难

美国科学家日前进行的一项研究显示,一种广为人知的可调节饥饿和体重的激素,可通过鼻腔给药的方式缓解睡眠过程中出现的呼吸问题。