J Hypertens:没有糖尿病的人吃二甲双胍也可降低血压,空腹血糖受损者可降低5 mmHg

2017-04-25 中国循环杂志 MedSci原创

二甲双胍是治疗2型糖尿病的老药了,虽老但很传奇,之前还有研究发现其具有降脂、减肥、抗癌作用,而近期阜外医院周龙、赵连成等进行的一项Meta分析还显示,二甲双胍还可降低非糖尿病者的收缩压水平,尤其是肥胖或糖尿病前期者。研究显示,二甲双胍可平均降低非糖尿病患者收缩压2 mmHg。其亚组分析显示,对空腹血糖受损患者和体重指数≥30 kg/m2肥胖者降压效应尤其显著,分别可平均降低5.03 mmHg和3


二甲双胍是治疗2型糖尿病的老药了,虽老但很传奇,之前还有研究发现其具有降脂、减肥、抗癌作用,而近期阜外医院周龙、赵连成等进行的一项Meta分析还显示,二甲双胍还可降低非糖尿病者的收缩压水平,尤其是肥胖或糖尿病前期者。

研究显示,二甲双胍可平均降低非糖尿病患者收缩压2 mmHg。其亚组分析显示,对空腹血糖受损患者和体重指数≥30 kg/m2肥胖者降压效应尤其显著,分别可平均降低5.03 mmHg和3 mmHg的收缩压。


图1  17岁以上不同非糖尿病人群服用二甲双胍1~24个月收缩压的平均变化

不过对于舒张压而言,虽然平均值有所下降,但无统计学意义。

此外,研究者也很严谨。考虑到不同研究的异质性,但在排除任何单一研究后并没有较大改变研究结果;此外漏斗图和Egger’s检验也没发现相关偏倚。

在J AM Soc Hypertens 的Hypertension Highlights专栏中,美国南卡罗来纳州大学学者Brent M. Egan对这项研究表示赞赏。

他认为,糖尿病患者和高血压前期患者在美国较为庞大,而不论是糖尿病前期还是高血压前期都会增加一个人得糖尿病的风险,而二甲双胍却可从不同角度控制这些危险因素。而且,之前一项纳入31项的Meta分析也显示,二甲双胍有降低体重、空腹血糖、胰岛素抵抗、调脂等作用。

此外,自2008年以来,美国内分泌协会(ADA)就推荐糖尿病前期患者应用二甲双胍以预防糖尿病。但是实际应用和循证证据间却存在较大差距,在美国每25个糖尿病前期才有1个人被处方二甲双胍。

他认为有必要从3个方面去推广二甲双胍的适宜应用:加强医患认识;列入医疗质量评估体系;食品药品管理局批准新适应证。

在J Hypertens同期述评中,来自希腊的几位学者也从二甲双胍对预防血管事件的临床试验到能够降压的动物实验等进行了回顾,并就当前Meta分析中纳入的研究中人群、随访时间、血压评估方法等进行了分析。

他们认为,当前这项研究补充了二甲双胍对非糖尿病者降压效应的证据,但二甲双胍到底是否可以降压还需谨慎考虑,未来有必要开展相关临床试验进一步探究。

当前这项Meta分析共纳入PubMed、Embase和Cochrane数据库建库至2016年3月发表的26篇文献中28项随机对照研究,共4113例患者。其中空腹血糖受损患者2283人,正常空腹血糖者1830人,肥胖者2866人和正常体重者1227人。

原始出处:


[2] Thomopoulos C, Katsimagklis , Makris T. Metformin and blood pressure lowering: a questioned association. J Hypertens, 2017, 35: 27-28.

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