PNAS:身心疲惫……浑浑噩噩……可能是免疫系统发生故障

2017-08-02 佚名 生物探索

慢性疲劳综合征(CFS)是一种至今病因不明的疾病,近日,斯坦福大学医学院的研究人员发现,血液中免疫分子的水平与CFS患者症状的严重程度有关。这一结果或许能为这个病因不明的疾病提供新的洞见及衡量疾病进展和评估治疗的方法。



在2010年经过5个月横跨亚洲的自驾游之后,22岁的大学毕业生Matthew Lazell-Fairman开始经常感到疲劳、肌肉酸痛和头痛。医生建议他去健身,但在第一次训练之后,Lazell-Fairman的身体彻底崩溃了:他疲惫不堪以至于无法工作,并且从未从这样的状态中恢复过来。现在,Lazell-Fairman每天只能做几个小时的低强度活动——比如烹饪,其余的时间他不得不躺在床上。

全世界约有1700万像Lazell-Fairman这样的慢性疲劳综合征(CFS)患者。CFS又被戏称为“雅痞病”,人们对这种疾病知之甚少,其确切原因仍然未知,目前既没有标准诊断工具也没有有效的治疗方法。近日,斯坦福大学医学院的研究人员发现,血液中免疫分子的水平与CFS患者症状的严重程度有关。这一结果或许能为这个病因不明的疾病提供新的洞见及衡量疾病进展和评估治疗的方法。

CFS也称为做肌痛性脑脊髓炎(Myalgic Encephalomyelitis,ME),该病的症状十分复杂,不仅限于无法恢复的长期疲劳。这种疲劳感可能会因身体或精神活动而恶化,并且经常伴随着一种心智浑浑噩噩的“脑雾”(brain fog)状态,对噪音,光线或其他刺激物如味觉和嗅觉十分敏感。患者也可能存在记忆障碍,肌肉疼痛以及腹泻、腹胀和恶心等肠道问题。

多年来,CFS一直被误认为是一种心理障碍,一些医生主张以心理治疗为主或逐渐增加身体活动。但越来越多的研究人员意识到这是一个生理问题,一些研究认为可能与激素或免疫系统障碍有关,还有一些研究认为与病毒感染、肠道微生物有关。斯坦福大学免疫学家Mark Davis说:“这是一个医学之谜。”

为此,Davis与斯坦福大学免疫学家Jose Montoya及其团队一起,考察了免疫系统失衡是否可能诱发CFS。通过分析192名符合CFS诊断标准的患者和392名健康个体的血液,研究小组发现有17种细胞因子水平与与疾病严重程度相关,在症状最严重的患者中这些细胞因子水平中更高。在症状最轻的患者中,这些细胞因子的水平低于健康人,而在中度症状的患者中,细胞因子水平与健康个体相当。这17种免疫分子中,绝大多数已知会刺激炎症反应并产生流感样症状。这一研究发表于近日的PNAS期刊上。

Davis说:“患者中竟然有这么多细胞因子都发生了改变,这十分令人惊讶。似乎没有哪个细胞因子未受该病的影响。”

一些免疫分子引起了特别的关注,因为它们的水平与疾病严重程度无关。研究人员发现,与健康人相比,CFS患者不论症状严重程度如何,他们血液中的TGF-β水平都更高,而抵抗素的水平则更低。

科学家猜测,这些分子可能会推动疾病,但也可能仅仅是免疫系统对抗不同来源的炎症的反映。 未来,科学家希望利用这些免疫分子作为疾病诊断工具,并弄清细胞因子和免疫系统在疾病中的作用。 “我希望看到更多这个方向的研究,”Hornig说,“许多患者都在等待着答案。”

原始出处:

Jose G. Montoya,et al. Cytokine signature associated with disease severity in chronic fatigue syndrome patients. PNAS, 2017. doi: 10.1073/pnas.1710519114

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    2017-10-19 drwjr
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    2017-08-02 139****0239

    henhao

    0

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    2017-08-02 三生有幸9135

    学习一下谢谢分享

    0

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    2017-08-02 清风拂面

    很好的文章,,谢谢分享

    0

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    2017-08-02 1dd8c52fm63(暂无匿称)

    了解了解,学习学习

    0

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慢性疲劳综合征的死亡率尚不清楚。我们调查了诊断为慢性疲劳综合征患者的二级和三级护理死亡率,数据来源伦敦南部与马氏NHS信托基金会生物医学研究中心(SLaM BRC)临床记录互动搜索(CRIS)登记。

J Intern Med:体位性心动过速是诊断慢性疲劳综合征的有用指标吗?

背景:体位性心动过速综合征(POTS)被认为是慢性疲劳综合征(CFS)的诊断指标。 目的:本研究的目的是(i)比较CFS队列里,不符合CFS标准但伴疲劳的患者,其POTS患病率情况;(ii)评估伴POTS的CFS患者(POTS-CFS)、不伴POTS的CFS患者(non-POTS-CFS),对认知行为疗法(CBT)的活性、损害和反应。 方法:本项前瞻性队列研究在荷兰内梅亨大学医学中心进

墙裂科普:总觉得累,难道得了慢性疲劳综合征?

总觉得累,难道得了慢性疲劳综合征?有没有经常觉得疲惫,浑身无力,精神萎靡,不想上班,提不起精神,怎么睡都睡不饱?先来做个自测吧~(记下自己中了几条)1、早晨不想起床,即使勉强起床,也是浑身倦意。2、工作或看书老开小差,注意力难以集中。3、说话懒言懒语,少气无力。4、不愿与同事交谈,回到家后也常常默不作声。5、总想伸懒腰,打哈欠,睡眼惺忪。6、懒得爬楼,上楼时常常绊脚。7、公共汽车开过来了也不想抢步

Lancet:自我指导的分级运动是否可以改善慢性疲劳综合征?

分级运动疗法是针对慢性疲劳综合征的一种安全有效的疗法。但治疗师的数量和可得性都受限。在自我指导下的分级运动的效果和安全性如何呢?

PNAS:慢性疲劳综合征生物标记物被发现

肌痛性脑脊髓炎或慢性疲劳综合征是一种病因未知的复杂疾病。在美国,该病的发病人数在一百万以上,而在全球,该疾病有数百万患者。之前的报导显示,肌痛脑脊髓炎或慢性疲劳综合征患者有炎症的迹象,但是现有的数据量非常有限,且相互矛盾。