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Expert Rev Neurother. 2008 Jul;8(7):1101-13. Links
Brain-derived neurotrophic factor and neuroplasticity in bipolar disorder.Kapczinski F, Frey BN, Kauer-Sant'Anna M, Grassi-Oliveira R.
Bipolar Disorder Program & Molecular Psychiatry Unit, Hospital de Clínicas, Federal University - UFRGS, Porto Alegre, Brazil. kapcz@terra.com.br
Initial descriptions of bipolar disorder (BD) emphasized that patients returned to a baseline condition after acute episodes. Such definitions were operational in teasing bipolar disorder apart from schizophrenia, where patients were described to be permanently impaired after the initial episodes. However, this view of BD as a disorder where cognition and overall functioning was spared has been changing after the scrutiny of new research. Currently, the cognitive impairment and neuroanatomical changes related to cumulative mood episodes, particularly manic episodes, are well described. In terms of neuropathological findings, recent data suggest that changes in neuronal plasticity, particularly in cell resilience and connectivity, are the main findings in BD. Data from differential lines of research converge to BDNF as an important contributor to the pathophysiology of BD. Serum BDNF levels have been shown to be decreased in depressive and manic episodes, returning to normal levels in euthymia. Moreover, factors that negatively influence the course of BD, such as life stress and trauma, have been shown to be associated with a decrease in serum BDNF levels among bipolar patients. These findings suggest that BDNF plays a central role in the transduction of psychosocial stress and recurrent episodes into the neurobiology of bipolar disorder. The present review discusses the role of BDNF as a mediator of the neuroplastic changes that occur in portion with mood episodes and the potential use of serum BDNF as a biomarker in BD.
PMID: 18590480 [PubMed - indexed for MEDLINE]
大致意思: 最初认为双相患者在急性发作之后会恢复到基线水平,这一点不同于精分患者-最初的发作会带来永久性的损害。然而,最新的研究发现双相发作不会损害认知和整体功能的观点受到挑战。目前认为日积月累的情绪波动,尤其是躁狂会损害认知功能和带来神经解剖学上的改变。 在神经病理学发现方面,最近的数据显示双相患者神经塑性的改变, 尤其是细胞弹力和连接上的改变。多种研究表明BDNF(一种蛋白质)是对于双相的病理生理一种重要的贡献者。 在抑郁和狂躁发作时,血浆BDNF水平降低,在情感正常时恢复到正常水平。另外,影响双相的负面因素,比如生活压力和创伤,也和双相患者的血浆BDNF水平降低有关联。这些发现表明BDNF在社会心理压力和反复发生的躁郁引起的神经生物学上的转变中扮演了一个关键角色。 当前的回顾讨论了BDNF在神经塑性改变中充当了介质角色, 以及作为双相生物标记的潜在利用价值。
不是医学专业,翻译的不大准确。不过目的是加强大家以及自己对双相的认识--它本质上是一种生理疾病。生理改变引起精神状态的改变以及认知功能的损害。 |
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