Cell Metabolism:脂肪分子居然能够调节血糖?

2019-10-03 佚名 细胞

最近,巴西,美国和德国的研究人员发现,12-HEPE是人体棕色脂肪组织响应寒冷而产生的脂质分子,该分子有助于降低血糖。他们对小鼠的实验结果为糖尿病的新疗法铺平了道路。

最近,巴西,美国和德国的研究人员发现,12-HEPE是人体棕色脂肪组织响应寒冷而产生的脂质分子,该分子有助于降低血糖。他们对小鼠的实验结果为糖尿病的新疗法铺平了道路。

该小组还观察到,用于治疗泌尿功能障碍的药物会增加人类患者释放到血液中的12-HEPE的数量。

该研究发表在《Cell Metabolism》杂志上。它的第一作者是巴西圣保罗州坎皮纳斯大学生物研究所(IB-UNICAMP)的研究员LuizOsórioLeiria。

白色脂肪组织是包括人类在内的哺乳动物两种脂肪组织中的一种,主要作用是将多余的能量作为脂肪储存。另一种是棕色脂肪组织,它可以将食物中的能量转化为热量,并有助于进行热量调节。棕色脂肪组织响应寒冷会产生几种脂质,12-HEPE就是其中之一,但其功能一直以来并不清楚。直到最近,该小组发现在注射浓缩葡萄糖溶液后,用12-HEPE处理的肥胖小鼠的血糖比未治疗的小鼠更有效地降低。

根据已发表的论文,12-HEPE对肥胖小鼠葡萄糖耐量的有益作用是由于它促进了骨骼肌和棕色脂肪组织对葡萄糖的摄取。

基于患者的研究指出,12-HEPE可能具有其它生理作用。在该研究中,志愿者按体型被分为三组:健康,超重和肥胖。血液样本分析显示,健康组的患者血液中12-HEPE含量高于超重组,而肥胖组则更多。

可能的解释是,肥胖者的棕色脂肪量比例低于正常群体。此外,肥胖个体缺乏棕色脂肪可能是导致肥胖症甚至糖尿病风险增加的原因。

对人体细胞的体外分析表明,12-HEPE增加了脂肪细胞对葡萄糖的摄取,这表明12-HEPE有助于适应寒冷的过程以及大幅度降低血脂中脂质水平的可能性。

该发现为开发新的抗糖尿病药物奠定了基础,并为目前可用的药物提供了可能的新疗法。

原始出处:
Leiria LO1, Wang CH1, Lynes MD1,et al, 12-Lipoxygenase Regulates Cold Adaptation and Glucose Metabolism by Producing the Omega-3 Lipid 12-HEPE from Brown Fat, Cell Metabolism(2019).  DOI: 10.1016/j.cmet.2019.07.001

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    2020-03-15 一闲
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    2020-07-16 维他命
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    2020-02-08 zhouqu_8
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    2020-06-17 guojianrong
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1896557, encodeId=2f8e189655e14, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Sun Mar 15 13:35:00 CST 2020, time=2020-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961722, encodeId=256e1961e22ad, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu Jul 16 20:35:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871436, encodeId=b51f18e14360f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Sat Feb 08 06:35:00 CST 2020, time=2020-02-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1888072, encodeId=02b218880e261, content=<a href='/topic/show?id=d56611584ec' target=_blank style='color:#2F92EE;'>#Meta#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11584, encryptionId=d56611584ec, topicName=Meta)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8f4110, createdName=guojianrong, createdTime=Wed Jun 17 16:35:00 CST 2020, time=2020-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1577215, encodeId=1fd615e721515, content=<a href='/topic/show?id=d86d1159e36' target=_blank style='color:#2F92EE;'>#Metabolism#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11597, encryptionId=d86d1159e36, topicName=Metabolism)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a6516392333, createdName=1249859em43(暂无昵称), createdTime=Sat Oct 05 01:35:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1598033, encodeId=ed6f1598033cf, content=<a href='/topic/show?id=6c6f1e62c5' target=_blank style='color:#2F92EE;'>#ABO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1762, encryptionId=6c6f1e62c5, topicName=ABO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b6c918580135, createdName=闆锋旦, createdTime=Sat Oct 05 01:35:00 CST 2019, time=2019-10-05, status=1, ipAttribution=)]
    2019-10-05 闆锋旦

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