Science报道青光眼廉价治疗方法:补充维生素B3

2017-02-18 佚名 生物探索

美国Jackson实验室教授和Howard Hughes医学研究所的研究员Simon W.M. John在2月17日的Science上报道了他们团队的新发现:通过将维生素B3添加到饮用水中去对遗传性青光眼倾向的小鼠有防止疾病的作用。青光眼是神经退行性疾病青光眼是最常见的神经退行性疾病之一,影响全球约8000万人。大多数青光眼患者因眼内有害的高压导致进行性功能障碍,造成视网膜神经节细胞的丢失。视网膜


美国Jackson实验室教授和Howard Hughes医学研究所的研究员Simon W.M. John在2月17日的Science上报道了他们团队的新发现:通过将维生素B3添加到饮用水中去对遗传性青光眼倾向的小鼠有防止疾病的作用。

青光眼是神经退行性疾病

青光眼是最常见的神经退行性疾病之一,影响全球约8000万人。大多数青光眼患者因眼内有害的高压导致进行性功能障碍,造成视网膜神经节细胞的丢失。视网膜神经节细胞是通过视神经连接眼睛到大脑的神经细胞。随着眼科学和神经科学的发展,越来越多的证据显示青光眼不仅仅是眼睛的局部病变,其神经损害累及整个视觉通路。年龄的增加是青光眼的主要危险因素,会引起有害眼内压的升高和增加神经元的脆弱性,造成压力引起的损害。

随着年龄的增长NAD会降低

在小鼠身上的实验体现服用维生素是如此惊人地有效,它消除了绝大多数与年龄有关的分子变化,并为防止青光眼提供了一个显著且强大的保护。它为青光眼患者开发廉价和安全的治疗提供了希望。

通过理解通常的衰老机制,能够开发出保护很多人免受衰老相关疾病困扰的新疗法。结合基因组学、代谢分析、神经生物学和其它方法对遗传易感青光眼小鼠进行研究,与对照组相比,研究人员发现随着年龄的增长NAD(在神经元和其它细胞的能量代谢中非常重要的分子)会降低。NAD水平的下降减少了神经元能力代谢的稳定性,特别是在压力下眼压升高。在本质上维生素B3(烟酰胺)的治疗能促进老化的视网膜神经节细胞代谢的稳定性,让它们更长时间保持健康。



主要实验内容

作者介绍该研究临床应用的前景

John解释了他们做这项研究的出发点:“我们想确定和年龄相关的关键易感因素,这些因子增加了对疾病尤其是神经性疾病的脆弱性。”

文章的第一作者Pete Williams介绍:“维生素B3能让这些老化的视网膜神经节细胞仍然健康,仍旧代谢旺盛。甚至在高眼压的状况下,它们也能更好地抵御损伤的过程。”

研究人员还发现运用Nmnat1(从烟酰胺合成NAD酶的基因)进行单基因治疗能够在这种模式小鼠中防止青光眼的发展。Williams说:“对于病人尤其是老年人,每天服用正确剂量的药物是一个问题。所以基因治疗可能是一次性解决问题的保护性措施。”他指出注射到眼部的基因疗法,已经被批准作为治疗少数非常罕见的人类遗传眼疾的有效手段。所以他们发现的重要的年龄相关因子能让基因疗法来治疗更普通的眼睛疾病成为可能。

John说,研究小组正在寻求临床合作伙伴检测维生素B3治疗青光眼患者的效果,他们也在探索维生素B3在涉及神经退行行疾病的其它疾病实施的可能。

维生素与神经退行性疾病

之前人们对维生素B3不足的共识是会产生:舌苔厚重、嘴唇浮肿、舌痛、唇痛、头皮特多、口腔黏膜干燥等状况。这是首次将维生素B3和神经退行性疾病,尤其是青光眼联系起来,并且显示了补充维生素B3的强大治疗效果。

流行病学和实验研究都发现叶酸、维生素B12、B6缺乏,以及同型半胱氨酸(homocysteine,Hcy)水平升高与一些神经退行性疾病有关系,包括阿尔茨海默病、中风、帕金森病等。叶酸、维生素B12、B6是Hcy在体内代谢的重要辅酶。叶酸、维生素B12、B6均可降低Hcy水平,其中叶酸是最有效的。增加富含叶酸的饮食摄入有助于Hcy恢复正常及减少神经退行性疾病的危险。

原始出处:

Pete A. Williams1, Jeffrey M. Harder1, Nicole E. Foxworth1, Kelly E. Cochran1, Vivek M. Philip1,et all.Vitamin B3 modulates mitochondrial vulnerability and prevents glaucoma in aged mice.Science 17 Feb 2017:Vol. 355, Issue 6326, pp. 756-760.DOI: 10.1126/science.aal0092

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1701403, encodeId=6e5f1e01403b4, content=<a href='/topic/show?id=220ee90625a' target=_blank style='color:#2F92EE;'>#维生素B3#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79062, encryptionId=220ee90625a, topicName=维生素B3)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d94630353217, createdName=wleon8905, createdTime=Sat Sep 30 13:57:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177465, encodeId=2dd11e746555, content=新观点,若临床证实有效,是青光眼治疗上的一大突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K3oV03UEKmQpd02wCrPlHfNEK02oTwiclkkDTVny3EebtBAPEw88tgwBcjlYAReAqsYtncWzltfcN/0, createdBy=311c1958416, createdName=JusTice, createdTime=Wed Feb 22 16:46:24 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177448, encodeId=d7e81e7448ec, content=文章很不错哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=96, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Feb 22 14:23:38 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375481, encodeId=6a0b13e54819a, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1399211, encodeId=9b2813992117a, content=<a href='/topic/show?id=cac364650c0' target=_blank style='color:#2F92EE;'>#治疗方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64650, encryptionId=cac364650c0, topicName=治疗方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8cec2200006, createdName=showtest, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1508513, encodeId=4ba3150851331, content=<a href='/topic/show?id=68b0e9055f7' target=_blank style='color:#2F92EE;'>#维生素B#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79055, encryptionId=68b0e9055f7, topicName=维生素B)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=17599981768, createdName=马龙, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=)]
    2017-02-22 JusTice

    新观点,若临床证实有效,是青光眼治疗上的一大突破

    0

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    2017-02-22 1e10c84am36(暂无匿称)

    文章很不错哦

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1701403, encodeId=6e5f1e01403b4, content=<a href='/topic/show?id=220ee90625a' target=_blank style='color:#2F92EE;'>#维生素B3#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79062, encryptionId=220ee90625a, topicName=维生素B3)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d94630353217, createdName=wleon8905, createdTime=Sat Sep 30 13:57:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177465, encodeId=2dd11e746555, content=新观点,若临床证实有效,是青光眼治疗上的一大突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K3oV03UEKmQpd02wCrPlHfNEK02oTwiclkkDTVny3EebtBAPEw88tgwBcjlYAReAqsYtncWzltfcN/0, createdBy=311c1958416, createdName=JusTice, createdTime=Wed Feb 22 16:46:24 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177448, encodeId=d7e81e7448ec, content=文章很不错哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=96, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Feb 22 14:23:38 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375481, encodeId=6a0b13e54819a, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1399211, encodeId=9b2813992117a, content=<a href='/topic/show?id=cac364650c0' target=_blank style='color:#2F92EE;'>#治疗方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64650, encryptionId=cac364650c0, topicName=治疗方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8cec2200006, createdName=showtest, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1508513, encodeId=4ba3150851331, content=<a href='/topic/show?id=68b0e9055f7' target=_blank style='color:#2F92EE;'>#维生素B#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79055, encryptionId=68b0e9055f7, topicName=维生素B)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=17599981768, createdName=马龙, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=)]
    2017-02-20 jichang
  5. [GetPortalCommentsPageByObjectIdResponse(id=1701403, encodeId=6e5f1e01403b4, content=<a href='/topic/show?id=220ee90625a' target=_blank style='color:#2F92EE;'>#维生素B3#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79062, encryptionId=220ee90625a, topicName=维生素B3)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d94630353217, createdName=wleon8905, createdTime=Sat Sep 30 13:57:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177465, encodeId=2dd11e746555, content=新观点,若临床证实有效,是青光眼治疗上的一大突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K3oV03UEKmQpd02wCrPlHfNEK02oTwiclkkDTVny3EebtBAPEw88tgwBcjlYAReAqsYtncWzltfcN/0, createdBy=311c1958416, createdName=JusTice, createdTime=Wed Feb 22 16:46:24 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177448, encodeId=d7e81e7448ec, content=文章很不错哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=96, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Feb 22 14:23:38 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375481, encodeId=6a0b13e54819a, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1399211, encodeId=9b2813992117a, content=<a href='/topic/show?id=cac364650c0' target=_blank style='color:#2F92EE;'>#治疗方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64650, encryptionId=cac364650c0, topicName=治疗方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8cec2200006, createdName=showtest, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1508513, encodeId=4ba3150851331, content=<a href='/topic/show?id=68b0e9055f7' target=_blank style='color:#2F92EE;'>#维生素B#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79055, encryptionId=68b0e9055f7, topicName=维生素B)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=17599981768, createdName=马龙, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1701403, encodeId=6e5f1e01403b4, content=<a href='/topic/show?id=220ee90625a' target=_blank style='color:#2F92EE;'>#维生素B3#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79062, encryptionId=220ee90625a, topicName=维生素B3)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d94630353217, createdName=wleon8905, createdTime=Sat Sep 30 13:57:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177465, encodeId=2dd11e746555, content=新观点,若临床证实有效,是青光眼治疗上的一大突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K3oV03UEKmQpd02wCrPlHfNEK02oTwiclkkDTVny3EebtBAPEw88tgwBcjlYAReAqsYtncWzltfcN/0, createdBy=311c1958416, createdName=JusTice, createdTime=Wed Feb 22 16:46:24 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=177448, encodeId=d7e81e7448ec, content=文章很不错哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=96, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Feb 22 14:23:38 CST 2017, time=2017-02-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375481, encodeId=6a0b13e54819a, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1399211, encodeId=9b2813992117a, content=<a href='/topic/show?id=cac364650c0' target=_blank style='color:#2F92EE;'>#治疗方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64650, encryptionId=cac364650c0, topicName=治疗方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8cec2200006, createdName=showtest, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1508513, encodeId=4ba3150851331, content=<a href='/topic/show?id=68b0e9055f7' target=_blank style='color:#2F92EE;'>#维生素B#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79055, encryptionId=68b0e9055f7, topicName=维生素B)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=17599981768, createdName=马龙, createdTime=Mon Feb 20 03:57:00 CST 2017, time=2017-02-20, status=1, ipAttribution=)]
    2017-02-20 马龙

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