Cell Rep:禁食有助于预防多发性硬化

2016-05-27 MedSci MedSci原创

南加州大学(USC)的研究人员进行的一项新进研究指出,断食饮食法有望作为治疗多发性硬化和其他自身免疫性疾病的一种新方法。通过对小鼠进行实验,他们发现,小鼠的疾病症状可减轻甚至完全逆转。初步患者实验也表明,该方法有效安全且可行。研究发表在Cell Reports。南加州大学老年医学学院的Valter Longo教授指出,断食饮食法(FMD)可触发细胞凋亡机制并有助于机体自我修复,并启动自身免疫细胞的

南加州大学(USC)的研究人员进行的一项新进研究指出,断食饮食法有望作为治疗多发性硬化和其他自身免疫性疾病的一种新方法。通过对小鼠进行实验,他们发现,小鼠的疾病症状可减轻甚至完全逆转。初步患者实验也表明,该方法有效安全且可行。研究发表在Cell Reports。

南加州大学老年医学学院的Valter Longo教授指出,断食饮食法(FMD)可触发细胞凋亡机制并有助于机体自我修复,并启动自身免疫细胞的凋亡进程,这个过程也会导致的新的健康的细胞的形成。

多发性硬化(MS)是以中枢神经系统(CNS)白质脱髓鞘病变为特点,遗传易感个体与环境因素作用发生的自身免疫性疾病。疾病进展不可预知,其临床特征为发作性视神经、脊髓和脑部的局灶性障碍。这些神经障碍可有不同程度的缓解、复发。全世界约230万人患有MS。美国患该病的患者约有35万人。

Longo教授和同事的早期工作集中于一种抗癌药物研发研究中出现的类似于FMD的方法,他们发现FMD可保护健康细胞并削弱了癌细胞的作用。2015年,他们发现FMD可延长实验小鼠寿命,并减少它们患癌症、心血管疾病和糖尿病的风险因素。因此研究人员认为该方法对人类也有益。

研究分为两个部分:小鼠实验和小样本患者实验。首先,研究人员开始对两组患有自身免疫性疾病的小鼠进行了实验。实验组小鼠采用FMD,一周中有3天摄入低热量和低蛋白饮食,并持续3周,对照组小鼠正常饮食。研究人员发现,FMD使20%的实验组小鼠恢复,体内皮质甾酮含量增加,T细胞数量、炎症因子和反应蛋白水平降,更重要的是小鼠由自身免疫系统攻击受损的髓鞘可再生。

Longo教授认为,对MS患者而言,T细胞可攻击神经细胞并使髓鞘受损,但由小鼠实验可以看出,断食饮食法可干扰这一过程并使髓鞘再生。

在第二部分的研究中,研究人员对60名MS患者进行了实验,以测试FMD的安全性和潜在有效性。病人被随机分配给给实验组和对照组,实验组患者采用FMD饮食1周,之后采用地中海饮食,对照组患者采用高脂肪饮食。研究人员发现实验组和对照组患者的临床表现、生活质量、身体健康和心理健康都有明显改善。

研究人员表示仍需进行更进一步的研究以测试地中海饮食本身的效果和作用,此外,研究人员未进行各种成像或免疫检测分析。

原始出处:

A diet mimicking fasting promotes regeneration and reduces autoimmunity and multiple sclerosis symptoms, In Young Choi et al., Cell Reports, 26 May 2016

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    2017-03-22 jml2009
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    2016-06-08 维他命
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    2016-05-30 老段

    都是知识

    0