How Berberine Fights Oxidative Stress, Inflammation And Diabetes

小檗碱如何对抗氧化应激、炎症和糖尿病

How_Berberine_Fights_Oxidative_Stress_Inflammation_And_Diabetes

小檗碱是一种天然植物化合物,存在于多种植物中,包括俄勒冈葡萄、黄柏、白屈菜、欧洲小檗、白毛茛和黄连等。这种化合物属于生物碱类别,在传统中药和印度阿育吠陀医学中作为止泻剂和抗感染剂具有长期且备受推崇的用途,并且还被用作亮黄色染料的来源。羊毛、皮革和木材。

生物碱作为一种化学基团非常有趣,包含大量化合物,所有这些化合物的结构组成中都至少有一个氮原子。其中许多含氮生物碱对人体具有很强的生物作用,已成为许多有益药物,包括强效阿片类止痛药吗啡和白血病化疗药物长春新碱。这些生物碱化合物对医学研究如此有吸引力的特性之一是它们在酸性条件下是水溶性的,在中性或碱性条件下是脂溶性的,这使得它们能够在更中性的条件下真正穿过细胞膜形式。 

当然,人们对生物碱重新产生的兴趣包括小檗碱,每年都有数百项关于这种化合物的新研究出现在科学期刊上。小檗碱最常研究的特性之一是其对心血管和代谢疾病的治疗作用,因为这些疾病是全球死亡的主要原因,迫切需要新的治疗药物。 

 

氧化应激、炎症和糖尿病的发展

小檗碱最有前途的治疗用途之一是它对氧化应激的影响,氧化应激是破坏性自由基的产生与身体用抗氧化剂中和这些自由基的能力之间发生的不平衡。自由基是新陈代谢的天然副产品,当氧原子分裂成具有不成对电子的单个原子时产生。但由于这些自由基不喜欢保持不配对状态,因此它们不断地清除身体,寻找其他电子来配对。 

 

在清除其他电子的过程中,这些自由基通过氧化过程有效地“窃取”电子,从而对蛋白质、细胞膜甚至 DNA 本身造成损害。这种氧化应激过程在多种疾病过程的发展中发挥着重要作用,其中包括心血管疾病、糖尿病、癌症、中风、神经退行性疾病(如痴呆)和慢性炎症。除了这些清除自由基造成的损害外,饮食中酸败脂肪(主要以工业食用油的形式)的消耗以及抗氧化状态的缺乏也会引发和传播这种氧化损害。 

 

尽管 2 型糖尿病发生的确切机制尚不完全清楚,但现在人们清楚地认识到,氧化应激在其发展中发挥着重要作用,主要是通过产生有毒的活性氧,如超氧阴离子和过氧化氢。这些化合物被认为会直接损害胰腺中产生胰岛素的特殊胰岛细胞。 

 

氧化应激和小檗碱

糖尿病的发生与烟酰胺腺嘌呤二核苷酸磷酸(NADPH)氧化酶的激活密切相关,这是一种存在于细胞膜中的酶家族,其功能是催化超氧化物自由基(称为超氧化物)的产生。这些超氧化物除其他作用外,还可以在需要时消灭各种病毒和细菌病原体,从而保护身体。通常,这些 NADPH 氧化酶在静息细胞中处于休眠状态,但如果过度激活,则会产生破坏性水平的活性氧 (ROS)。在血管细胞中,活性氧失衡会导致高血压、心肌梗塞、动脉粥样硬化(动脉壁脂肪斑块积聚)和中风。


大量的动物模型研究表明小檗碱具有强大的抗氧化活性。小檗碱通过多种不同途径减少氧化应激,包括直接清除超氧自由基。小檗碱还直接抑制 NADPH 氧化酶的表达,如上所述,NADPH 氧化酶是活性氧的关键起源之一。 

 

Berberine-neuroprotection-and-antioxidant-activity

 

炎症、肥胖和小檗碱

 

炎症还通过多种复杂的化学途径直接参与 2 型糖尿病的发展,这些化学途径导致高炎症细胞因子的产生,最终导致胰岛素抵抗增加和进一步的胰岛细胞功能障碍。炎症的发展和氧化应激之间存在非常密切的关联,还需要强调的是,小檗碱在抑制炎症中的作用是一个非常复杂的作用,涉及与其抗氧化途径重叠的多种途径。

这些重叠途径之一涉及 AMPK(腺苷单磷酸激活蛋白激酶)。许多研究人员认为,正是小檗碱对 AMPK 通路的影响解释了它对人类健康的大部分影响。 AMPK 充当一种中央“控制开关”,有助于调节身体产生和使用的能量数量。当这些多个 AMPK 调节途径出现功能障碍并且 AMPK 关闭时,就会导致血糖和血脂(脂肪)异常,从而导致糖尿病甚至代谢综合征,这是腹部脂肪堆积增加和脂肪堆积增加的危险组合。除了血糖和血脂升高之外,血压也会升高。 AMPK 激活也已被证明可以真正减少衰老。 

只有少数已知的化合物可以激活 AMPK,包括常用的糖尿病药物二甲双胍。小檗碱也是这些化合物之一。事实上,小檗碱激活 AMPK 的程度与二甲双胍相似。 


Berbeine AMPK activation


小檗碱不仅能激活 AMPK,还能增加糖酵解(将葡萄糖(糖)转化为能量的代谢途径),并导致肝脏中糖异生(新葡萄糖的产生)减少。同样的机制也被认为是小檗碱对减肥和抗肥胖作用的积极作用的基础。小檗碱不仅已成功用于治疗小鼠实验诱发的 2 型糖尿病,而且还用于治疗 2 型糖尿病的人体试验。有趣的是,小檗碱的抗糖尿病特性似乎部分归因于它对人体肠道微生物组的影响,促进肠道微生物平衡。  

总之,小檗碱是一种天然植物源化合物,具有有效的抗氧化和抗衰老作用,并通过多种生物化学途径发挥作用,改善自由基的破坏作用,抑制炎症并调节葡萄糖的产生。通过这些相同的机制,小檗碱还可以对减肥发挥积极作用,并有助于调节血糖。虽然小檗碱超出了本文的讨论范围,但它在抑制某些类型的癌症方面也显示出了巨大的希望。 

 

当然,任何想要以自然的方式获得抗衰老、抗炎和抗肥胖益处的人都应该考虑这种强效补充剂。您可以在此处找到有关我们优质小檗碱补充剂的完整信息,该补充剂特别采用胡椒碱(源自黑胡椒)配制,以增加吸收率并实现最大生物利用度。

 

 

参考:

 

1. Zahra Ilyas、Simone Perna、Salwa Al-thawadi、Tariq A. Alalwan、Antonella Riva、Giovanna Petrangolini、Clara Gasparri、Vittoria Infantino、Gabriella Peroni、Mariangela Rondanelli,小檗碱对减肥预防肥胖的作用:A系统评价,生物医学与药物治疗,第 127 卷,2020 年,110137,ISSN 0753-3322,https://doi.org/10.1016/j.biopha.2020.110137。

2. 沃勒 G.R.、诺瓦茨基 E.K. (1978)生物碱在植物中的作用。在:植物中的生物碱生物学和代谢。施普林格,波士顿,马萨诸塞州。 https://doi.org/10.1007/978-1-4684-0772-3_5

3. 萨克·RB,弗罗里希·JL。小檗碱抑制霍乱弧菌和大肠杆菌肠毒素的肠道分泌反应。感染免疫。 1982 年 2 月;35(2):471-5。 doi:10.1128/IAI.35.2.471-475.1982。 PMID:7035365; PMCID:PMC351064。

4. 冯X,苏雷达A,贾法里S,等。小檗碱在心血管和代谢疾病中的作用:从机制到治疗。治疗诊断学。 2019;9(7):1923-1951。 2019 年 3 月 16 日发布。doi:10.7150/thno.30787

5. Yin J,Xing H,Ye J。小檗碱对 2 型糖尿病患者的疗效。代谢。 2008;57(5):712-717。 doi:10.1016/j.metabol.2008.01.013

6. 安特罗·萨尔米宁,凯·卡尼兰塔。 AMP 激活蛋白激酶 (AMPK) 通过集成信号网络控制衰老过程,《衰老研究评论》,第 11 卷,第 2 期,2012 年,第 230-241 页,ISSN 1568-1637,https://doi.org/10.1016/ j.arr.2011.12.005。

7. 张勇、顾勇、任红等。小檗碱和益生菌对 2 型糖尿病的肠道微生物组相关影响(PREMOTE 研究)。自然通讯 11, 5015 (2020)。 https://doi.org/10.1038/s41467-020-18414-8

8. Zahra Ilyas、Simone Perna、Salwa Al-thawadi、Tariq A. Alalwan、Antonella Riva、Giovanna Petrangolini、Clara Gasparri、Vittoria Infantino、Gabriella Peroni、Mariangela Rondanelli,小檗碱对减肥以预防肥胖的作用:A系统评价,生物医学与药物治疗,第 127 卷,2020 年,110137,ISSN 0753-3322,https://doi.org/10.1016/j.biopha.2020.110137。

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