Oncotarget:Mkrn3或与儿童中枢性性早熟相关

2017-07-29 Emma MedSci原创

性早熟是男孩在9岁以前、女孩在8岁以前出现青春性征发育的现象,近年来,儿童性早熟的发病率明显上升,已成为最常见的小儿内分泌疾病之一。性早熟除会对儿童身体上造成影响,如成年后身材矮小,还会对儿童的心理发展造成不良的影响。

性早熟是男孩在9岁以前、女孩在8岁以前出现青春性征发育的现象,近年来,儿童性早熟的发病率明显上升,已成为最常见的小儿内分泌疾病之一。性早熟除会对儿童身体上造成影响,如成年后身材矮小等,还会对儿童的心理发展造成不良的影响。

中枢性性早熟(CPP)是由激活GnRH神经元控制下的丘脑-垂体-性腺轴的触发因子紊乱引起的,性腺轴功能被提前激活,导致性腺发育和分泌性激素,使内、外生殖器发育和第二性征呈现。相关研究提示,触发因子Mkrn3的功能失去突变可能与CPP发生有关,Mkrn3含有锌环指结构域,被认为是一个E3泛素连接酶。

发表于Oncotarget的一篇文章报道,在青春期前后的小鼠下丘脑中,Mkrn3表达趋势与神经元发育的重要分泌蛋白质Nptx1的表达趋势相反。Mkrn3能够与Nptx1相互作用并通过泛素化对Nptx1活性产生抑制作用,Mkrn3的功能失去突变会导致抑制作用不足,引起CPP发作,该项研究为CPP的致病机制研究以及治疗提供了重要参考。

原始出处:
Liu H, et al. Mkrn3 functions as a novel ubiquitin E3 ligase to inhibit Nptx1 during puberty initiation. Oncotarget. 2017 Jul 18. doi: 10.18632/oncotarget.19347.

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    2018-05-18 仁医06
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    2018-03-06 周周人

    学习...

    0

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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-09-24 jyzxjiangqin

    儿童中枢性性早熟.

    0

  5. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-09-09 jyzxjiangqin

    儿童中枢性早熟的治疗.

    0

  6. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-09-05 jyzxjiangqin

    儿童中枢性性早熟.

    0

  7. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-08-23 jyzxjiangqin

    儿童中枢性性早熟.

    0

  8. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-08-06 jyzxjiangqin

    儿童中枢性性早熟。

    0

  9. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-08-05 zhangqingzui

    好好学习,感谢

    0

  10. 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channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2cQVB0w6wKXcuEC4Enl0NTBvgHc6yoUM80A3TDia90Fo2MPicibnfm59eh7A0WoicrZXI2hde9ctxKPrlXhzNdL6oZ/0, createdBy=27371624227, createdName=zhangqingzui, createdTime=Thu Aug 03 14:52:02 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-08-03 zhangqingzui

    感谢分享,学习

    0

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