Baidu
map

NAT MED:食欲太旺盛?怪这个激素!

2017-11-07 海北 MedSci原创

鉴于食物的稀缺性,饥饿生存的能力是进化的一个关键驱动力。哺乳动物通过激活由一系列激素精确协调的大量相互关联的过程来应对饥饿。

鉴于食物的稀缺性,饥饿生存的能力是进化的一个关键驱动力。哺乳动物通过激活由一系列激素精确协调的大量相互关联的过程来应对饥饿。在禁食的早期阶段,有两个协调过程,对食欲的刺激和肝葡萄糖的释放。两者一起保证了获取食物的驱动力,保持觅食时大脑的营养和警觉。 白脂素(Asprosin)是最近发现的一个促进肝葡萄糖产生的禁食诱导的激素。来自贝勒医学院的研究人员发现,在循环中的asprosin能够穿越血脑屏障,并通过依赖cAMP的途径直接激活开胃的AgRP +神经元。这种信号传导以GABA依赖的方式,抑制下游的导致食欲不振的阿片-促黑素细胞皮质素原(POMC)阳性神经元,从而导致食欲刺激,驱动脂肪和体重的积累。 在人体中,天冬酰胺酶的遗传缺陷会引起以食欲不振和极度瘦弱为特征的综合征。携带相似突变的小鼠能够模拟该表型。这些小鼠可以完全被白脂素治愈。此外,研究人员发现,肥胖的人类和小鼠具有病理性升高的循环白脂素浓度。如果利用单克隆抗体中和血液中的白脂素,可以减少肥胖小鼠的食欲和体重,还能够改善其血糖谱。 因此,除了执行葡萄糖生成功能之外,白脂素是中枢作用的食欲激素,其是治疗肥胖症和糖尿病的潜在治疗靶标。

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=1882612, encodeId=4dc6188261208, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Tue Mar 06 21:40:00 CST 2018, time=2018-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260000, encodeId=8596260000f1, content=谢谢分享谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Nov 09 13:16:39 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1447111, encodeId=a9c6144e11142, content=<a href='/topic/show?id=975010100260' target=_blank style='color:#2F92EE;'>#食欲#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101002, encryptionId=975010100260, topicName=食欲)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/SpcCrdwMXJSYUAG0eoicES3DbgMdjibhYzPShfjJHlHFdRicDAdug8NtPOdBbaYAuYOd50130Q7aibsD2YyL8YvQ2g/132, createdBy=166d5313584, createdName=yeye5224614, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608215, encodeId=94391608215cb, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=)]
    2018-03-06 一叶知秋
  2. [GetPortalCommentsPageByObjectIdResponse(id=1882612, encodeId=4dc6188261208, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Tue Mar 06 21:40:00 CST 2018, time=2018-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260000, encodeId=8596260000f1, content=谢谢分享谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Nov 09 13:16:39 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1447111, encodeId=a9c6144e11142, content=<a href='/topic/show?id=975010100260' target=_blank style='color:#2F92EE;'>#食欲#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101002, encryptionId=975010100260, topicName=食欲)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/SpcCrdwMXJSYUAG0eoicES3DbgMdjibhYzPShfjJHlHFdRicDAdug8NtPOdBbaYAuYOd50130Q7aibsD2YyL8YvQ2g/132, createdBy=166d5313584, createdName=yeye5224614, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608215, encodeId=94391608215cb, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=)]
    2017-11-09 虈亣靌

    谢谢分享谢谢分享

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1882612, encodeId=4dc6188261208, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Tue Mar 06 21:40:00 CST 2018, time=2018-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260000, encodeId=8596260000f1, content=谢谢分享谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Nov 09 13:16:39 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1447111, encodeId=a9c6144e11142, content=<a href='/topic/show?id=975010100260' target=_blank style='color:#2F92EE;'>#食欲#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101002, encryptionId=975010100260, topicName=食欲)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/SpcCrdwMXJSYUAG0eoicES3DbgMdjibhYzPShfjJHlHFdRicDAdug8NtPOdBbaYAuYOd50130Q7aibsD2YyL8YvQ2g/132, createdBy=166d5313584, createdName=yeye5224614, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608215, encodeId=94391608215cb, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1882612, encodeId=4dc6188261208, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Tue Mar 06 21:40:00 CST 2018, time=2018-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260000, encodeId=8596260000f1, content=谢谢分享谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Nov 09 13:16:39 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1447111, encodeId=a9c6144e11142, content=<a href='/topic/show?id=975010100260' target=_blank style='color:#2F92EE;'>#食欲#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101002, encryptionId=975010100260, topicName=食欲)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/SpcCrdwMXJSYUAG0eoicES3DbgMdjibhYzPShfjJHlHFdRicDAdug8NtPOdBbaYAuYOd50130Q7aibsD2YyL8YvQ2g/132, createdBy=166d5313584, createdName=yeye5224614, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608215, encodeId=94391608215cb, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Nov 09 06:40:00 CST 2017, time=2017-11-09, status=1, ipAttribution=)]

相关资讯

《细胞》子刊:日出日落,两餐减肥?科学家发现严格餐间断食可改善代谢,预防肥胖和糖尿病:科学大发现

据史料记载,在汉代以前我国劳动人民一天都是吃两顿的,也就是两餐制。普通民众从每日两餐向每日三餐过渡的时期是西汉和东汉。到了唐朝,大部分老百姓都是每天吃三餐了。 然后……唐朝的审美突然就变了,以胖为美,杨贵妃的故事嘛。 二者之间是否有联系,只是奇点糕脑洞大开的猜想,不过科学家们的最新研究,有可能给那些审美文化变迁的研究者(划掉),以及想减肥的吃货们提供一些启示。 10月27日,《细

Diabetes:肥胖相关的肝脏胰岛素抵抗新机制

在此项研究者,作者建立了一种在肥胖和糖尿病中功能被扰乱的蛋白质,S-亚硝基谷胱甘肽还原酶(GSNOR),这是调节炎症和自噬间关键环节的主要蛋白质。

肥胖相关性问题已成为国家难题

10月20日,中华医学会糖尿病学分会(CDS)肥胖与糖尿病学组年会在南京召开。 “我们都是工作在糖尿病和肥胖领域第一线的奋战者。肥胖与糖尿病学组由邹大进教授创立,现在由我来接力。在CDS的指导下,学组进行了颇有成效的工作,一年一度的学组年会是体现学组工作的重要环节,参加年会的人数逐年增多,医生的学习热情也不断高涨。此次年会设置了近30场主题讲座,共同探讨交流肥胖与糖尿病领域在临床工作及研究的进展

BMJ:肥胖与妇产科风险因素

肥胖与8种妇产科疾病相关,分别为子宫内膜癌、卵巢癌、产前抑郁、总的和急救剖腹产率、先兆子痫、巨大儿和低Apgar评分

J Nutr Biochem:绿茶对高脂饮食肝脏脂质代谢的影响。

具有健康益处的绿茶(GT)是一种广泛消费的饮料,抗肥胖作用便是其健康益处的一个方面。然而,GT对于与肥胖相关的脂质水平的影响尚不清楚。在此研究中,作者探讨了GT对高脂饮食(HFD)诱导的肥胖小鼠肝脏脂质代谢的影响。

Metabolism:鸢尾素、瘦素浓度与肥胖和2型糖尿病之间的相关性分析!

由此可见,肥胖组瘦素浓度较高,无论糖耐量如何。空腹血糖受损的肥胖者较糖耐量正常的非肥胖者循环鸢尾素浓度较高。鸢尾素浓度并不能前瞻性地预测糖尿病发生风险。

Baidu
map
Baidu
map
Baidu
map