Re-engineering the subthalamus.
Re-engineering the subthalamus.
复制标题
重新设计底丘脑。
DOI:
10.1016/j.wneu.2012.05.014
复制
发表时间:
2013
影响因子:
2
通讯作者:
Turner,DennisA
中科院分区:
文献类型:
--
作者:
Turner,DennisA
This historical vignette of the region known as “subthalamus” is timely and brings up how our current concepts regarding this region have evolved into the current level of high clinical importance for clinical treatment schemes. This pertinent review of older literature (particularly prior to 1990) highlights how previous concepts as to functioning and treatment in this region have been redefined and improved (1). Whereas most efforts at treatment of this region are now focused on motor disorders (ie, tremor and Parkinson’s disease) this vignette outlines the wide variety of other disorders once considered as involving the subthalamus, including epilepsy (16), chronic pain, and behavioral disorders, as neurosurgeons experimented to define the function of this region. Additionally, the authors include previous treatment paradigms (ie, various forms of lesioning, the previous mainstay of generating a treatment effect), now mostly supplanted by long-term electrical stimulation with deep brain stimulation (DBS), gene therapy approaches to modify long-term cellular function, and other biological or cellular treatments, all focused on augmentation of function rather than lesioning.Defined roughly as the diencephalic region below the AC-PC line (hence ventral to the thalamus), medial to the internal capsule/cerebral peduncle, lateral to the hypothalamus and bordering the mesencephalon, there are multiple structures within this small region (3). Nuclei included are the subthalamic nucleus (STN), zona incerta and nuclei of the tegmental fields of Forel, whereas fiber bundles traversing the region include the ascending cerebellar tracts coursing into the ventral intermediate nucleus (Vim) of the thalamus (15), the medial lemniscus ascending into the ventrocaudal (Vc, sensory) nucleus, and the ansa lenticularis as the main fiber output bundle from globus pallidus interna (GPi) terminating in ventral motor thalamus (ie, Voa, Vop). However, directly bordering this region are multiple additional structures, many of which are functionally connected, particularly substantia nigra pars reticulata (SNr) and pedunculopontine nucleus (PPN), which are also considered in this vignette.