AJG: 绿茶提取物不能很好的预防结直肠腺瘤的发生

2022-06-21 xuyihan MedSci原创

腺瘤是结直肠癌 (CRC) 的前驱病变。在结肠镜检查期间切除腺瘤可降低CRC发病率和 CRC相关死亡。非甾体抗炎药 (NSAID),如阿司匹林或COX2抑制剂对新息肉的形成具有显着的影响。二甲双胍在非

腺瘤是结直肠癌 (CRC) 的前驱病变。在结肠镜检查期间切除腺瘤可降低CRC发病率和 CRC相关死亡。非甾体抗炎药 (NSAID),如阿司匹林或COX2抑制剂对新息肉的形成具有显着的影响。二甲双胍在非糖尿病成人中具有化学预防作用,但也可能产生相当大的副作用。权衡利弊,目前尚无推荐用于平均风险人群结直肠癌化学预防的药物。茶树叶子制成的绿茶是一种全球消费的饮料。它含有 3%–6% 的咖啡因和高达 30% 的儿茶素,特别是儿茶素-3-棓酸盐(EGCG)对各种癌症具有预防和可能的治疗作用。它影响许多细胞内信号通路,并通过诱导细胞凋亡和细胞周期停滞、调节DNA甲基化和促进 DNA 修复。

本项研究旨在探究150 毫克绿茶提取物 (GTE) 与安慰剂相比,服用 3 年以上对大型白人 CRC 筛查人群中的异时性结直肠腺瘤的影响。

这是一项为期3年研究,GTE标准化给药方式是150 mg EGCG 每日两次或是同样剂量的安慰剂,纳入的样本有1001患者。在与 GTE 进行为期 4 周的磨合后进行随机化(1:1,n = 879)以进行效果评估。主要观察终点是随机分组后 3 年的结肠镜检查中是否存在腺瘤/结直肠癌。

研究结果显示GTE的安全性良好,两个组之间的不良事件没有重大差异。改良意向治疗分析后发现经过 26-44个月的结肠镜随访;632名患者中的腺瘤率在安慰剂组为 55.7%,在GTE 治疗组组为 51.1% ,这 4.6% 的差异没有统计学意义(调整后的相对风险 0.905;P = 0.1613)。安慰剂组符合方案人群的相应数据为 54.3% (151/278) 和 GTE 组 48.3% (129/267),表明 GTE 组的腺瘤发生率略低,但不显着。调整后的相对风险 0.883;P= 0.1169)。

图:绿茶提取物对于预防结直肠腺瘤的效果

本项研究证实GTE在人群中耐受性良好,但在整个研究人群中,GTE 组和安慰剂组之间的腺瘤发生率没有统计学上的显着差异。绿茶提取物不能很好的预防结直肠腺瘤的发生。

 

原始出处:

Seufferlein, Thomas. Et al. Green Tea Extract to Prevent Colorectal Adenomas, Results of a Randomized, Placebo-Controlled Clinical Trial. The American Journal of Gastroenterology.2022.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1242403, encodeId=dffa12424037f, content=<a href='/topic/show?id=957ce9191f1' target=_blank style='color:#2F92EE;'>#绿茶#</a>提取物不能很好的预防<a href='/topic/show?id=d05ae8720f2' target=_blank style='color:#2F92EE;'>#结直肠腺瘤#</a>的发生,没有这么容易,而且能不能预防还要看使用的时间和量!另外,使用的茶的种类,如<a href='/topic/show?id=48ace718922' target=_blank style='color:#2F92EE;'>#红茶#</a>等。不能一概而论。, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79191, encryptionId=957ce9191f1, topicName=绿茶), TopicDto(id=78720, encryptionId=d05ae8720f2, topicName=结直肠腺瘤), TopicDto(id=77189, encryptionId=48ace718922, topicName=红茶)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=循证小兵, createdTime=Thu Sep 01 09:14:55 CST 2022, time=2022-09-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2057352, encodeId=69bc205e35216, content=<a href='/topic/show?id=18982222db' target=_blank style='color:#2F92EE;'>#AJG#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2222, encryptionId=18982222db, topicName=AJG)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2978132, createdName=minzju5052, createdTime=Fri May 26 08:28:43 CST 2023, time=2023-05-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1228118, encodeId=185812281183f, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=54d11447557, createdName=ziru1978, createdTime=Thu Jun 23 06:16:39 CST 2022, time=2022-06-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1402440, encodeId=78aa14024408f, content=<a href='/topic/show?id=862e8e196a1' target=_blank style='color:#2F92EE;'>#茶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87196, encryptionId=862e8e196a1, topicName=茶)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/eTyQ1TyLVfyaGrflWSd1Jw4u1F68ibicmN32DE38FjEW3zTIKeFeaMUAQsjyqaL4QZ3lRibFIzziacMz9niceznOTTw/132, createdBy=03082405249, createdName=hbwxf, createdTime=Wed Jun 22 09:28:43 CST 2022, time=2022-06-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1453723, encodeId=79921453e23db, content=<a href='/topic/show?id=098ee8679ad' target=_blank style='color:#2F92EE;'>#结直肠#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78679, encryptionId=098ee8679ad, topicName=结直肠)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=9ace5575596, createdName=crystal0564, createdTime=Wed Jun 22 09:28:43 CST 2022, time=2022-06-22, status=1, ipAttribution=)]
    2022-09-01 循证小兵

    #绿茶#提取物不能很好的预防#结直肠腺瘤#的发生,没有这么容易,而且能不能预防还要看使用的时间和量!另外,使用的茶的种类,如#红茶#等。不能一概而论。

    0

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    2023-05-26 minzju5052
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    2022-06-23 ziru1978

    学习

    0

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    2022-06-22 hbwxf
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