Outflow of cerebrospinal fluid is predominantly through lymphatic vessels and is reduced in aged mice.

Ma, Qiaoli; Ineichen, Benjamin V; Detmar, Michael; Proulx, Steven T. (2017). Outflow of cerebrospinal fluid is predominantly through lymphatic vessels and is reduced in aged mice. Nature communications, 8(1), p. 1434. Springer Nature 10.1038/s41467-017-01484-6

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Cerebrospinal fluid (CSF) has been commonly accepted to drain through arachnoid projections from the subarachnoid space to the dural venous sinuses. However, a lymphatic component to CSF outflow has long been known. Here, we utilize lymphatic-reporter mice and high-resolution stereomicroscopy to characterize the anatomical routes and dynamics of outflow of CSF. After infusion into a lateral ventricle, tracers spread into the paravascular spaces of the pia mater and cortex of the brain. Tracers also rapidly reach lymph nodes using perineural routes through foramina in the skull. Using noninvasive imaging techniques that can quantify the transport of tracers to the blood and lymph nodes, we find that lymphatic vessels are the major outflow pathway for both large and small molecular tracers in mice. A significant decline in CSF lymphatic outflow is found in aged compared to young mice, suggesting that the lymphatic system may represent a target for age-associated neurological conditions.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Theodor Kocher Institute

UniBE Contributor:

Proulx, Steven Thomas

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

2041-1723

Publisher:

Springer Nature

Language:

English

Submitter:

Ursula Zingg-Zünd

Date Deposited:

21 Nov 2019 11:13

Last Modified:

28 Nov 2020 02:30

Publisher DOI:

10.1038/s41467-017-01484-6

PubMed ID:

29127332

BORIS DOI:

10.7892/boris.135345

URI:

https://boris.unibe.ch/id/eprint/135345

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