心肌梗死后的心肌重构,这个小小莓果竟然能通过4大机制,发挥奇效!

2022-03-19 LILYMED MedSci原创

心肌梗死后心脏重塑的临床干预至关重要。

血管疾病 (CVD) 是全世界发病率和死亡率的主要原因。其中心肌梗死(MI)的死亡率高于其他心血管疾病。心脏重塑是心血管疾病进展的一个相关因素,因为它在心室功能不全的病理生理学中起着重要作用。因此,心肌梗死后心脏重塑的临床干预至关重要。目前,具有高抗氧化特性的特定食物已被用作心脏保护化合物的来源。

巴西莓(Açai,阿萨伊)是Arecaceae家族中的一种植物,原产于巴西亚马逊地区,由于其抗氧化/抗炎特性而被认为是一种功能性食品。巴西莓种子含有65%纤维,5%蛋白质,2%脂质,2%矿物盐和28.3%多酚(儿茶素,表儿茶素以及聚合物和低聚原花青素),果肉含有48%的脂质,25%的总糖,13%的蛋白质,少量的纤维,维生素(A,B1,B2,B3,C和E)和25.5%的多酚(主要是矢车菊素3-葡萄糖苷和花青素3-芦丁苷)。

在实验模型中,巴西莓种子提取物(ASE)具有抗炎和抗氧化活性。补充ASE也促进了心脏的益处:例如,一项关于阿霉素诱导的大鼠心脏毒性的研究发现,ASE通过减少氧化损伤来减弱这种毒性。此外,ASE改善了心脏的能量代谢。但到目前为止,补充ASE是否影响心肌梗死后的心脏重塑尚不清楚。本研究的目的是分析ASE髓补充剂对大鼠心肌梗死后心脏重塑的影响。

手术7天后,将雄性Wistar大鼠分为六组:(1)假手术动物按标准饲料喂养(SA0, n = 14);(2)假手术动物喂含2% açai果肉的标准饲料(SA2, n = 12);(3)假手术动物饲喂含5% açai果肉的标准饲料(SA5, n = 14);(4)梗死动物喂食标准饲料(i0, n = 12);(5)梗死动物喂食含2% açai果肉的标准饲料(IA2, n = 12);(6)梗死动物喂食含5% açai果肉的标准饲料(IA5, n = 12)。补充3个月后,进行超声心动图和安乐死。

心肌梗死后补充Açai的效果

在梗死动物中补充Açai改善了心肌能量代谢(提高了β-OHADH、PDH、CS、复合物I的活性,降低了LDH活性)(表3和图2),并减弱了氧化应激(降低了MDA和SOD活性)(表4和图3)。此外,açai补充剂调节了炎症过程(IL-10浓度降低)(表5和图4),并减少胶原的沉积(TIMP-1浓度降低和ICF百分比降低)(表6和图4)。

心肌梗死后补充Açai的剂量依赖性效应

不同剂量的açai补充剂会产生剂量依赖性效应。这种效应可以在抗氧化酶:SOD活性降低P = 0.005), GPx活性升高P = 0.014);脂质过氧化标志物:较低浓度的LH(P = 0.034)和MDA(P = 0.009);在能量代谢酶中:PDH(P = 0.001),CS(P = 0.043)和复合物I(P = 0.003)的活性较高;和低密度脂蛋白活性(P<0.001);抗炎细胞因子:IL-10浓度较低(P<0.001);和胶原沉积标志物:ICF百分比较低(P = 0.016),TIMP-1浓度较低(P<0.001)中观察到。

总之,Açai补充剂可减轻大鼠心肌梗死后的心脏重塑。其机制涉及改善能量代谢,减少氧化应激(降低丙二醛浓度,P = 0.023;剂量依赖效应),调节炎症过程(降低白介素-10浓度,P<0.001;剂量依赖效应)和减少纤维化(间质胶原组分百分比较低,P<0.001;剂量依赖性效应)不同剂量的açai补充剂对心脏重塑有剂量依赖效应。

原文来源:

Figueiredo AM, et al. Açai supplementation (Euterpe oleracea Mart.) attenuates cardiac remodeling after myocardial infarction in rats through different mechanistic pathways. PLoS One. 2022 Mar 4;17(3):e0264854. doi: 10.1371/journal.pone.0264854. PMID: 35245316; PMCID: PMC8896726.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1934402, encodeId=e998193440253, content=<a href='/topic/show?id=074951336f5' target=_blank style='color:#2F92EE;'>#心肌重构#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=51336, encryptionId=074951336f5, topicName=心肌重构)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5eee468, createdName=zxl729, createdTime=Tue Dec 27 01:08:07 CST 2022, time=2022-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1218914, encodeId=26db1218914ff, content=神奇 , beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e3e76499938, createdName=ms6000001791212108, createdTime=Thu May 12 00:17:19 CST 2022, time=2022-05-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1204312, encodeId=4eb8120431270, content=学到了, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8b785178041, createdName=146ee983m43暂无昵称, createdTime=Sun Mar 20 11:25:07 CST 2022, time=2022-03-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1204297, encodeId=0220120429e23, content=<a href='/topic/show?id=b086512e33c' target=_blank style='color:#2F92EE;'>#心肌梗死#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=51273, encryptionId=b086512e33c, topicName=心肌梗死)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=医者仁者, createdTime=Sun Mar 20 10:30:28 CST 2022, time=2022-03-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1204172, encodeId=f89212041e24c, content=<a href='/topic/show?id=4ba510448064' target=_blank style='color:#2F92EE;'>#莓果#</a>有这个作用,有些令人难以相信哦!, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104480, encryptionId=4ba510448064, topicName=莓果)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=医者仁者, createdTime=Sat Mar 19 19:27:47 CST 2022, time=2022-03-19, status=1, ipAttribution=)]
    2022-05-12 ms6000001791212108

    神奇

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    2022-03-20 146ee983m43暂无昵称

    学到了

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    2022-03-19 医者仁者

    #莓果#有这个作用,有些令人难以相信哦!

    0

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