Drainage of cerebral interstitial fluid into deep cervical lymph of the rabbit
Abstract
Lymph from the jugular lymph trunks of anesthetized rabbits has been continuously collected and radioiodinated albumin (RISA) therein estimated after microinjection of 1 microliter of 131I-albumin into the caudate nucleus, after single intraventricular injections, and during intraventricular infusions. Comparison of lymph at 7 and 25 h after intracerebral microinjection with efflux of radioactivity from whole brain suggests that about 50% of cleared radioactivity goes through lymph. Concentrations, normalized to cerebrospinal fluid (CSF), were much higher in lymph and retropharyngeal nodes after brain injection than after CSF injection or infusion. Also after brain injection, lymph and nodes contained more activity on injected side in contrast to lack of laterality after CSF administration. Calculation suggests that less than 30% of RISA cleared from brain can do so via a pool of well-mixed CSF. Analysis of tissues is compatible with much RISA draining by bulk flow via cerebral perivascular spaces plus passage from subarachnoid space of olfactory lobes into submucous spaces of nose and thus to lymph.
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Early studies in rabbits using radiolabeled albumin and in rats using India ink, albumin-labeled with colloidal gold, and Evans blue have suggested that perivascular interstitial fluid flow carries solutes and macromolecules to the subarachnoid space and cerebrospinal fluid compartment for drainage into deep cervical lymph.
“Early studies in rabbits using radiolabeled albumin and in rats using India ink, albumin-labeled with colloidal gold, and Evans blue have suggested that perivascular ISF flow carries solutes and macromolecules to the subarachnoid space and CSF compartment for drainage into deep cervical lymph (75, 273).”
From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [75]
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- Authors
- Bradbury, M. W., Cserr, H. F., & Westrop, R. J.
- ORCID
- Bradbury, M. W.
- Venue
- American Journal of Physiology-Renal Physiology
- Publisher
- American Physiological Society
- Published
- 1981-04-01
- Volume
- 240
- Issue
- 4
- Pages
- F329-F336
- ISSN
- 1522-1466 (ISSN-L)
- 1931-857X
- OpenAlex
- W2303119417
- Cited by
- 335
- References
- 0
- Citations by year
- 2026: 3 · 2025: 11 · 2024: 19 · 2023: 15 · 2022: 16 · 2021: 21 · 2020: 15 · 2019: 19 · 2018: 16 · 2017: 21 · 2016: 8 · 2015: 9 · 2014: 10 · 2013: 8 · 2012: 5
- FWCI
- 1.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Physiology-Renal Physiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
- Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
- Health Sciences › Medicine › Oncology › Lymphatic System and Diseases
- Keywords
- retropharyngeal lymph nodes, cerebrospinal fluid, radioiodinated albumin, caudate nucleus, intraventricular injection, bulk flow, perivascular spaces, olfactory lobe, subarachnoid space, rabbits
- MeSH terms
- Animals, Brain, Extracellular Space, Female, Injections, Intraventricular, Iodine Radioisotopes, Lymph, Lymph Nodes, Male, Neck, Rabbits, Rheology, Serum Albumin
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