期刊
JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM
卷 42, 期 8, 页码 1364-1382出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0271678X221098145
关键词
mLVs; glymphatic pathways; meningeal immunity; CNS diseases; brain clearance system
资金
- National Natural Science Foundation of China [81772693]
- Double Top Construction and Innovation Spark Item of Sichuan University [2082604401047]
- Incubation project of clinical study, West China Hospital, Sichuan University [2019HXFH020]
The recent discovery of meningeal lymphatic vessels and glymphatic pathways challenges the previous belief that the central nervous system lacks a lymphatic system. The close connection between these two systems facilitates waste removal and immune cell trafficking, but dysfunction can lead to neurodegenerative diseases. Noninvasive imaging techniques offer potential for studying the human glymphatic-mLV system and diagnosing neurological disorders.
The recent discovery of the meningeal lymphatic vessels (mLVs) and glymphatic pathways has challenged the long-lasting dogma that the central nervous system (CNS) lacks a lymphatic system and therefore does not interact with peripheral immunity. This discovery has reshaped our understanding of mechanisms underlying CNS drainage. Under normal conditions, a close connection between mLVs and the glymphatic system enables metabolic waste removal, immune cell trafficking, and CNS immune surveillance. Dysfunction of the glymphatic-mLV system can lead to toxic protein accumulation in the brain, and it contributes to the development of a series of neurodegenerative disorders, such as Alzheimer's and Parkinson's diseases. The identification of precise cerebral transport routes is based mainly on indirect, invasive imaging of animals, and the results cannot always be applied to humans. Here we review the functions of the glymphatic-mLV system and evidence for its involvement in some CNS diseases. We focus on emerging noninvasive imaging techniques to evaluate the human glymphatic-mLV system and their potential for preclinical diagnosis and prevention of neurodegenerative diseases. Potential strategies that target the glymphatic-mLV system in order to treat and prevent neurological disorders are also discussed.
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