Baidu
map

Nat Chem:研究人员发现胆固醇或催化阿尔茨海默病

2018-05-09 黄敏 新华社

研究人员在由 7 日出版的 《自然·化学》 刊载的论文中写道:“我们现在的问题不是要消除大脑中的胆固醇,而是需要通过调节胆固醇与贝塔淀粉状蛋白的相互作用来控制它对阿尔茨海默病的作用。我们不能说胆固醇是(贝塔淀粉状蛋白)积聚的唯一催化剂,但肯定是之一。”

英国剑桥大学和瑞典隆德大学研究人员发现,胆固醇可能在阿尔茨海默病形成和发展过程中起到催化剂作用。

先前研究显示,大脑中贝塔淀粉状蛋白大量积聚是导致阿尔茨海默病的直接原因。实际上,所有脑细胞都会生成贝塔淀粉状蛋白。研究牵头人、剑桥大学学者米歇尔·文德鲁斯科洛说,正常情况下,大脑中的贝塔淀粉状蛋白水平几乎是实验室积聚要求的千分之一,“到底发生了什么让它积聚?”研究人员在体外研究中发现,大脑神经元细胞膜中所含胆固醇是贝塔淀粉状蛋白积聚的催化剂,让积聚速度快 20 倍。

研究人员在由 7 日出版的 《自然·化学》 刊载的论文中写道:“我们现在的问题不是要消除大脑中的胆固醇,而是需要通过调节胆固醇与贝塔淀粉状蛋白的相互作用来控制它对阿尔茨海默病的作用。我们不能说胆固醇是(贝塔淀粉状蛋白)积聚的唯一催化剂,但肯定是之一。”

研究人员说,目前尚不清楚这一结果是否适用于来自食物的胆固醇,因为胆固醇并不能穿透血脑屏障,也就是说不能由血液进入脑组织。

研究人员认为,这项研究结果意味着人们朝寻求阿尔茨海默病的可能疗法前进了一步。

原始出处:

Johnny Habchi, Sean Chia, Céline Galvagnion, et al. Cholesterol catalyses Aβ42 aggregation through a heterogeneous nucleation pathway in the presence of lipid membranes. Nature Chemistry (2018), doi:10.1038/s41557-018-0031-x.

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 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1907559, encodeId=f941190e55991, content=<a href='/topic/show?id=379fe3364c9' target=_blank style='color:#2F92EE;'>#研究人员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73364, encryptionId=379fe3364c9, topicName=研究人员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Sun Dec 09 05:17:00 CST 2018, time=2018-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883023, encodeId=1e4f18830234c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jun 20 12:17:00 CST 2018, time=2018-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1817871, encodeId=813e181e8716d, content=<a href='/topic/show?id=4c9f9e777ac' target=_blank style='color:#2F92EE;'>#阿尔茨海#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97777, encryptionId=4c9f9e777ac, topicName=阿尔茨海)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=636e2500187, createdName=12498da4m32(暂无昵称), createdTime=Sat Aug 25 18:17:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1816848, encodeId=e1df18168481f, content=<a href='/topic/show?id=17b59e77626' target=_blank style='color:#2F92EE;'>#阿尔茨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97776, encryptionId=17b59e77626, topicName=阿尔茨)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Bnia2EtH2IvyBtniaWHPQOYAicsN3IAL1ZuPV7qyALcdCiawRJdEiafMxWTxzERQW7eeKg8HfCKCRK2CJicy073C4RJg/132, createdBy=464b2500186, createdName=ms1948154235210413, createdTime=Sun Aug 05 00:17:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1470225, encodeId=d03e14e022581, content=<a href='/topic/show?id=45a79e7788c' target=_blank style='color:#2F92EE;'>#阿尔茨海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97778, encryptionId=45a79e7788c, topicName=阿尔茨海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5917090900, createdName=yhj-time, createdTime=Fri May 11 02:17:00 CST 2018, time=2018-05-11, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1907559, encodeId=f941190e55991, content=<a href='/topic/show?id=379fe3364c9' target=_blank style='color:#2F92EE;'>#研究人员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73364, encryptionId=379fe3364c9, topicName=研究人员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Sun Dec 09 05:17:00 CST 2018, time=2018-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883023, encodeId=1e4f18830234c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jun 20 12:17:00 CST 2018, time=2018-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1817871, encodeId=813e181e8716d, content=<a href='/topic/show?id=4c9f9e777ac' target=_blank style='color:#2F92EE;'>#阿尔茨海#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97777, encryptionId=4c9f9e777ac, topicName=阿尔茨海)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=636e2500187, createdName=12498da4m32(暂无昵称), createdTime=Sat Aug 25 18:17:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1816848, encodeId=e1df18168481f, content=<a href='/topic/show?id=17b59e77626' target=_blank style='color:#2F92EE;'>#阿尔茨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97776, encryptionId=17b59e77626, topicName=阿尔茨)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Bnia2EtH2IvyBtniaWHPQOYAicsN3IAL1ZuPV7qyALcdCiawRJdEiafMxWTxzERQW7eeKg8HfCKCRK2CJicy073C4RJg/132, createdBy=464b2500186, createdName=ms1948154235210413, createdTime=Sun Aug 05 00:17:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1470225, encodeId=d03e14e022581, content=<a href='/topic/show?id=45a79e7788c' target=_blank style='color:#2F92EE;'>#阿尔茨海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97778, encryptionId=45a79e7788c, topicName=阿尔茨海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5917090900, createdName=yhj-time, createdTime=Fri May 11 02:17:00 CST 2018, time=2018-05-11, status=1, ipAttribution=)]
    2018-06-20 liye789132251
  3. [GetPortalCommentsPageByObjectIdResponse(id=1907559, encodeId=f941190e55991, content=<a href='/topic/show?id=379fe3364c9' target=_blank style='color:#2F92EE;'>#研究人员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73364, encryptionId=379fe3364c9, topicName=研究人员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Sun Dec 09 05:17:00 CST 2018, time=2018-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883023, encodeId=1e4f18830234c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jun 20 12:17:00 CST 2018, time=2018-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1817871, encodeId=813e181e8716d, content=<a href='/topic/show?id=4c9f9e777ac' target=_blank style='color:#2F92EE;'>#阿尔茨海#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97777, encryptionId=4c9f9e777ac, topicName=阿尔茨海)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=636e2500187, createdName=12498da4m32(暂无昵称), createdTime=Sat Aug 25 18:17:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1816848, encodeId=e1df18168481f, content=<a href='/topic/show?id=17b59e77626' target=_blank style='color:#2F92EE;'>#阿尔茨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97776, encryptionId=17b59e77626, topicName=阿尔茨)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Bnia2EtH2IvyBtniaWHPQOYAicsN3IAL1ZuPV7qyALcdCiawRJdEiafMxWTxzERQW7eeKg8HfCKCRK2CJicy073C4RJg/132, createdBy=464b2500186, createdName=ms1948154235210413, createdTime=Sun Aug 05 00:17:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1470225, encodeId=d03e14e022581, content=<a href='/topic/show?id=45a79e7788c' target=_blank style='color:#2F92EE;'>#阿尔茨海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97778, encryptionId=45a79e7788c, topicName=阿尔茨海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5917090900, createdName=yhj-time, createdTime=Fri May 11 02:17:00 CST 2018, time=2018-05-11, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1907559, encodeId=f941190e55991, content=<a href='/topic/show?id=379fe3364c9' target=_blank style='color:#2F92EE;'>#研究人员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73364, encryptionId=379fe3364c9, topicName=研究人员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Sun Dec 09 05:17:00 CST 2018, time=2018-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883023, encodeId=1e4f18830234c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jun 20 12:17:00 CST 2018, time=2018-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1817871, encodeId=813e181e8716d, content=<a href='/topic/show?id=4c9f9e777ac' target=_blank style='color:#2F92EE;'>#阿尔茨海#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97777, encryptionId=4c9f9e777ac, topicName=阿尔茨海)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=636e2500187, createdName=12498da4m32(暂无昵称), createdTime=Sat Aug 25 18:17:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1816848, encodeId=e1df18168481f, content=<a href='/topic/show?id=17b59e77626' target=_blank style='color:#2F92EE;'>#阿尔茨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97776, encryptionId=17b59e77626, topicName=阿尔茨)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Bnia2EtH2IvyBtniaWHPQOYAicsN3IAL1ZuPV7qyALcdCiawRJdEiafMxWTxzERQW7eeKg8HfCKCRK2CJicy073C4RJg/132, createdBy=464b2500186, createdName=ms1948154235210413, createdTime=Sun Aug 05 00:17:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1470225, encodeId=d03e14e022581, content=<a href='/topic/show?id=45a79e7788c' target=_blank style='color:#2F92EE;'>#阿尔茨海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97778, encryptionId=45a79e7788c, topicName=阿尔茨海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5917090900, createdName=yhj-time, createdTime=Fri May 11 02:17:00 CST 2018, time=2018-05-11, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1907559, encodeId=f941190e55991, content=<a href='/topic/show?id=379fe3364c9' target=_blank style='color:#2F92EE;'>#研究人员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73364, encryptionId=379fe3364c9, topicName=研究人员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Sun Dec 09 05:17:00 CST 2018, time=2018-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883023, encodeId=1e4f18830234c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jun 20 12:17:00 CST 2018, time=2018-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1817871, encodeId=813e181e8716d, content=<a href='/topic/show?id=4c9f9e777ac' target=_blank style='color:#2F92EE;'>#阿尔茨海#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97777, encryptionId=4c9f9e777ac, topicName=阿尔茨海)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=636e2500187, createdName=12498da4m32(暂无昵称), createdTime=Sat Aug 25 18:17:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1816848, encodeId=e1df18168481f, content=<a href='/topic/show?id=17b59e77626' target=_blank style='color:#2F92EE;'>#阿尔茨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97776, encryptionId=17b59e77626, topicName=阿尔茨)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Bnia2EtH2IvyBtniaWHPQOYAicsN3IAL1ZuPV7qyALcdCiawRJdEiafMxWTxzERQW7eeKg8HfCKCRK2CJicy073C4RJg/132, createdBy=464b2500186, createdName=ms1948154235210413, createdTime=Sun Aug 05 00:17:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1470225, encodeId=d03e14e022581, content=<a href='/topic/show?id=45a79e7788c' target=_blank style='color:#2F92EE;'>#阿尔茨海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97778, encryptionId=45a79e7788c, topicName=阿尔茨海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5917090900, createdName=yhj-time, createdTime=Fri May 11 02:17:00 CST 2018, time=2018-05-11, status=1, ipAttribution=)]

相关资讯

Alzheimer''s & Dement:高胆固醇对老年人认知影响受年龄限制

3月5日,在线发表于《Alzheimer’s & Dementia》杂志上的一项研究表明,随着年龄的增长,老年人高胆固醇水平与认知能力下降之间的线性关系会减弱,到了85岁之后,这一关系甚至会逆转。

预防心脑血管病:为什么要降胆固醇?如何降?

近来关于胆固醇的危害和降胆固醇的重要性有很多谣言,甚至有少数别有用心(旨在推销保健品)的人声称胆固醇无害,还有人宣称他汀是毒药。这些披着科普的外衣进行广告宣传的段子给很多人带来困惑:胆固醇是否有害?我们该不该控制胆固醇?

Int Arch Otorhinolaryngol:胆固醇水平对噪音诱导听力损失的影响研究

噪音诱导的听力损失(NIHL)在工人群体中是一种最常见职业疾病之一,且与高水平噪音长期接触相关。NIHL的病理到目前为止仍旧不清楚,但是一些基因和它们在组织水平上的活性有所研究。血胆脂醇过多能搞扰乱微循环,能够成为听力损失潜在的病理机制之一。最近,有研究人员进行了旨在调查NIHL与血胆脂醇过多之间关系的研究。研究的群体在职业噪音为85dB且接触至少10年的工人中选择,并且在7种频率(500Hz,

PLOS ONE:胆固醇水平和死亡率的队列研究

众所周知的是,高胆固醇血症是冠心病的危险因素,但至今为止,我们对于胆固醇水平的变化与死亡率之间的关联尚未完全了解。

Circulation:遗传以及生活方式对年轻女性低密度脂蛋白的影响!

动脉粥样硬化从儿童时期就已经开始,但是低密度脂蛋白胆固醇(LDL-C),一种致病风险因素,通常临床事件发生时次才进行研究和处理。女性在生命的后期通常比男性受到更多的影响,并且常常在心血管试验和研究中没能得到诊断、治疗以及充分理解。近期,一项发表在杂志Circulation上的研究旨在更好地了解影响年轻女性LDL-C水平的生活方式和遗传因素。研究者们随机抽取了28000名年龄介于25至40岁之间的女

Circulation:专家指出:胆固醇水平超过这个标准就该服用他汀类治疗!

根据美国心脏协会杂志Circulation报道的一项全国代表性研究,不到40%的胆固醇严重升高的人正在接受适当的药物治疗。

Baidu
map
Baidu
map
Baidu
map