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Cell:肥胖者为何会高血压?

2014-12-09 佚名 生物谷

根据Monash大学和剑桥大学的研究人员证实:瘦素除是调节体内储存脂肪量的一种激素,也会驱动体重增加情况下的血压升高。 肥胖或超重是高血压和心血管疾病发展的一个主要危险因素。虽然可能涉及许多因素,但精确解释这两个疾病之间的联系还不清楚。 在Cell杂志上发表的一项研究中,澳大利亚莫纳什大学Michael Cowley教授领导的研究小组与英国剑桥研究人员将激素瘦素生成出现问题的小鼠和人类与“

根据Monash大学和剑桥大学的研究人员证实:瘦素除是调节体内储存脂肪量的一种激素,也会驱动体重增加情况下的血压升高。

肥胖或超重是高血压和心血管疾病发展的一个主要危险因素。虽然可能涉及许多因素,但精确解释这两个疾病之间的联系还不清楚。

在Cell杂志上发表的一项研究中,澳大利亚莫纳什大学Michael Cowley教授领导的研究小组与英国剑桥研究人员将激素瘦素生成出现问题的小鼠和人类与“健康”的小鼠和人类比较,看这种激素是否是两种疾病(肥胖和高血压)之间。

瘦素是由脂肪生成,在血液中循环并到达大脑,在那里它充当调控储备能量的信号,调节能量消耗和饥饿感,因此它有时被称为“饱腹感激素”。

该小组发现,患有一种遗传性疾病的人(缺乏瘦素激素),尽管会肥胖(体重非常重)但却有较低血压。大脑中缺乏瘦蛋白受体基因的人一样,也有较低血压。这意味着大脑无法对激素产生响应。

模拟人的疾病,Cowley教授研究小组发现有正常的瘦素信号小鼠,当给以高脂肪饮食成为肥胖后,血压升高。但这些效应均未见于缺乏瘦素或瘦素无法工作的小鼠(由于瘦素有缺陷或瘦素蛋白受体被阻断)中。

这些实验表明,瘦素信号传导对于肥胖诱导的血压升高是必需的。Cowley教授说:高血压是肥胖的一个主要的结果,我们的研究解释了这种联系的背后机制,研究表明瘦素会增加血压。研究人员目前正在调查大脑中瘦素调节血压的精确分子途径。

原始出处

Simonds SE1, Pryor JT2, Ravussin E3, Greenway FL3, Dileone R4, Allen AM5, Bassi J5, Elmquist JK6, Keogh JM7, Henning E7, Myers MG Jr8, Licinio J9, Brown RD1, Enriori PJ1, O'Rahilly S7, Sternson SM10, Grove KL11, Spanswick DC12, Farooqi IS13, Cowley MA14.Leptin mediates the increase in blood pressure associated with obesity.Cell. 2014 Dec 4;

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    2015-01-16 chg121
  2. [GetPortalCommentsPageByObjectIdResponse(id=1926713, encodeId=fc861926e133f, content=<a href='/topic/show?id=7ecd81935b4' target=_blank style='color:#2F92EE;'>#肥胖者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=105, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81935, encryptionId=7ecd81935b4, topicName=肥胖者)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d7db99, createdName=chg121, createdTime=Fri Jan 16 05:10:00 CST 2015, time=2015-01-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=26423, encodeId=1d1d2642342, content=好好学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=206, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=ac181616815, createdName=ljjj1053, createdTime=Mon Jun 08 17:43:00 CST 2015, time=2015-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959217, encodeId=4724195921e70, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, 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=Sat Dec 13 22:10:00 CST 2014, time=2014-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868967, encodeId=0994186896e2b, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Aug 19 09:10:00 CST 2015, time=2015-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=13216, encodeId=f7fb13216dc, content=难道高血压以后可以反馈性促进代谢增加从而减肥?, beContent=null, objectType=article, channel=null, level=null, likeNumber=170, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=870092288, createdName=rosa00tong, createdTime=Fri Dec 19 05:08:00 CST 2014, time=2014-12-19, status=1, ipAttribution=)]
    2015-06-08 ljjj1053

    好好学习学习

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    2014-12-13 维他命
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    2014-12-19 rosa00tong

    难道高血压以后可以反馈性促进代谢增加从而减肥?

    0

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