A new look at cerebrospinal fluid circulation

被引：530
作者：
Brinker T. [1 ]
Stopa E. [1 ]
Morrison J. [1 ]
Klinge P. [1 ]
机构：
[1] Department of Neurosurgery, The Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI 02903
来源：
Fluids and Barriers of the CNS | / 11卷 / 1期
关键词：
Aquaporin; Astrocyte; Blood brain barrier; Cerebrospinal fluid circulation; Virchow robin space;
D O I：
10.1186/2045-8118-11-10
中图分类号：
学科分类号：
摘要：
According to the traditional understanding of cerebrospinal fluid (CSF) physiology, the majority of CSF is produced by the choroid plexus, circulates through the ventricles, the cisterns, and the subarachnoid space to be absorbed into the blood by the arachnoid villi. This review surveys key developments leading to the traditional concept. Challenging this concept are novel insights utilizing molecular and cellular biology as well as neuroimaging, which indicate that CSF physiology may be much more complex than previously believed. The CSF circulation comprises not only a directed flow of CSF, but in addition a pulsatile to and fro movement throughout the entire brain with local fluid exchange between blood, interstitial fluid, and CSF. Astrocytes, aquaporins, and other membrane transporters are key elements in brain water and CSF homeostasis. A continuous bidirectional fluid exchange at the blood brain barrier produces flow rates, which exceed the choroidal CSF production rate by far. The CSF circulation around blood vessels penetrating from the subarachnoid space into the Virchow Robin spaces provides both a drainage pathway for the clearance of waste molecules from the brain and a site for the interaction of the systemic immune system with that of the brain. Important physiological functions, for example the regeneration of the brain during sleep, may depend on CSF circulation. © 2014 Brinker et al.; licensee BioMed Central Ltd.
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