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Med Hypotheses:厌食症的罪魁祸首:细菌感染引发的自体免疫反应

2016-04-28 佚名 生物谷

厌食症是致死率最高的心理疾病,而且我们目前对引发这一疾病的原因以及相应的治疗方法知之甚少。不过,科学家们认为我们长期以来的研究方向可能出现了偏差。 来自英国的一个研究组发表了一篇文章,他们称厌食症实际上是由细菌感染引起的,而非简单的心理异常。同时,他们认为慢性疲劳症与过敏性肠综合症的发病也许有着相似的原因。 "心理因素当然很重要,不过它作为主要因素的证据不够充分",研究者们说道


厌食症是致死率最高的心理疾病,而且我们目前对引发这一疾病的原因以及相应的治疗方法知之甚少。不过,科学家们认为我们长期以来的研究方向可能出现了偏差。

来自英国的一个研究组发表了一篇文章,他们称厌食症实际上是由细菌感染引起的,而非简单的心理异常。同时,他们认为慢性疲劳症与过敏性肠综合症的发病也许有着相似的原因。

"心理因素当然很重要,不过它作为主要因素的证据不够充分",研究者们说道。该文章发表在《Medical Hypotheses》杂志上,正如其名,这一想法也仅仅是一个假说,还需要进一步的证实。

不过,一旦得到证实,这将改变以往对厌食症,慢性疲劳征以及过敏性肠综合症患者的治疗方案

研究者们提出的想法十分新颖,不过他们并没有确定具体那一种细菌是导致发病的原因。大致说来,他们认为患者的免疫系统通过产生抗体应对最初的细菌感染,但是这些抗体会产生特异性紊乱的现象,从而对自身的神经细胞发起攻击。

自体免疫反应能够解释这些患者经历的身体异常情况,而能够解释不同性别之间患病几率不同的事实(女性相比男性患常见自体免疫病的风险都要高)。

"女性患自体免疫病的几率是男性的10倍",研究者们写道:"同时,女性患过敏性肠综合症,慢性疲劳征以及神经性厌食症的风险都要更高,这与我们的假说相符"。

细菌感染假说同时能够解释厌食症的一些特殊症状。比如它常见于追求时尚的青春期少女群体中。

"自身抗体针对大脑发起攻击,将会导致恶心,恐惧等心理反应的发生",作者们说道:"这些信号联合起来将会在青春期少女大脑中留下深深的印记,进而形成对完美身材的主观看法以及对肥胖以及食物的恐惧心理"

如果造成这一结果的原因是细菌感染的话,就意味着厌食症能够通过抵抗细菌感染的手段得到防治。

该研究组目前正在动物水平验证他们的想法,而且希望鉴定出导致免疫系统发生紊乱的细菌类型。

"如果我们能够分离到关键细菌的话,就有可能将机体的细菌种群平衡恢复到正常水平"。

原始出处:

J.A. Morriscorrespondenceemail, S.J. Broughton, Q. Wessels. Microbes, molecular mimicry and molecules of mood and motivation.Med Hypotheses. 2016 Feb;87:40-3 DOI: http://dx.doi.org/10.1016/j.mehy.2015.12.011 

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    2016-04-30 dongjia2015
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    2016-04-29 明崖

    学习了,希望还有多点研究

    0

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