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桑葚提取物可以减缓内皮衰老--Aging Cell

2020-12-07 haibei MedSci原创

研究人员在Aging Cell杂志发表了一篇文章,其研究了花青素在大鼠胸主动脉和人血管内皮细胞老化模型中的保护作用及其基本机制。

由于医疗和保健的进步,老年人的预期寿命正在迅速增加。然而,目前,与年龄相关的健康衰退并没有得到足够的重视,给医疗系统带来了许多问题。内皮功能障碍是已知导致老年人血管疾病(CVD)的主要年龄相关动脉表型之一。此外,内皮功能障碍除了受内皮氧化应激下游的一氧化氮(NO)生物利用度降低和炎症的影响外,还受到老年人主流CVD危险因素的调控。

最近,研究人员在Aging Cell杂志发表了一篇文章,其研究了花青素在大鼠胸主动脉和人血管内皮细胞老化模型中的保护作用及其基本机制。

研究人员发现在体外,花青素-3-芸香苷(C-3-R)和花青素-3-葡萄糖苷(C-3-G)抑制了d-半乳糖(d-gal)诱导的人内皮细胞的衰老,表现为衰老相关的β-半乳糖苷酶活性、p21和p16INK4a降低。花青素阻断了d-gal诱导的活性氧(ROS)形成和NADPH氧化酶活性。花青素逆转了d-gal介导的内皮一氧化氮合酶(eNOS)丝氨酸磷酸化和SIRT1表达的抑制,恢复了内皮细胞的NO水平。同时,SIRT1介导的eNOS去乙酰化也被证明参与了花青素增强eNOS活性的过程。

在体内,研究人员给衰老的大鼠服用富含花青素的桑葚提取物8周,并观察到桑椹提取物缓解了衰老大鼠主动脉的内皮衰老和氧化应激。一致地,桑椹提取物还提高了血清NO水平,增加了eNOS的磷酸化,增加了SIRT1的表达,减少了主动脉中的硝基酪氨酸。

老化组的eNOS乙酰化程度较高,经桑椹提取物处理后恢复。同样,与eNOS相关的SIRT1水平在衰老组中降低,在衰老加桑椹组中恢复。

这些研究结果表明,花青素通过调节ROS的形成和减少eNOS解偶,增强NO的生物利用率,从而保护内皮衰老。

 

原始出处:

Geum‐Hwa Lee et al. Anthocyanins attenuate endothelial dysfunction through regulation of uncoupling of nitric oxide synthase in aged rats. Aging Cell (2020). 

 

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1962386, encodeId=aa531962386da, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, 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=Fri May 14 21:24:49 CST 2021, time=2021-05-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1872084, encodeId=1a9018e20845e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Sep 14 16:24:49 CST 2021, time=2021-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=906149, encodeId=31ff90614970, content=以后到了桑葚的季节,多买点桑葚吃~, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211019/df01a4bfb64246379ddfef3370d04115/e1274c8eb5e440918f56f83bcfea9031.jpg, createdBy=3a345397082, createdName=Jessica, createdTime=Tue Dec 08 20:46:06 CST 2020, time=2020-12-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905820, encodeId=48d490582054, content=<a href='/topic/show?id=c01b2138812' target=_blank style='color:#2F92EE;'>#中医#</a>中医中指补肾药物具有抗<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>作用, beContent=null, objectType=article, channel=null, level=null, likeNumber=241, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=21388, encryptionId=c01b2138812, topicName=中医), TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Mon Dec 07 22:11:00 CST 2020, time=2020-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905789, encodeId=fbcc905e89da, content=学习了,涨知识了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=130, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Mon Dec 07 19:41:43 CST 2020, time=2020-12-07, status=1, ipAttribution=)]
    2021-05-14 维他命
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    2020-12-08 Jessica

    以后到了桑葚的季节,多买点桑葚吃~

    0

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    2020-12-07 lovetcm

    #中医#中医中指补肾药物具有抗#衰老#作用

    0

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    2020-12-07 ms2000001051330459

    学习了,涨知识了!

    0

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2020年11月24日,我国著名的心血管病内科专家、医学教育及科学家,享受国务院特殊贡献津贴,广东省心血管病介入性诊断和治疗奠基人之一冯建章教授因病在广州逝世,享年89岁。

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