Abstract：
:This report examines the effect of decreasing serum osmolality on movement into the ventricular system of fluid and of test material injected into the brain. Trace quantities of 22NaCl and 125I-labeled cat serum albumin (CSA) were injected into cerebral white matter of cats. The rates of cerebrospinal fluid volume flow, and appearance of 22Na and 125I-CSA were measured in the effluent fluid using ventriculocisternal perfusion before and while serum osmolality was acutely decreased by the intravenous infusion of a 60 mOsm sucrose solution. As compared to the control period, at the end of the infusion serum osmolality decreased from 321 +/- 4.2 mOsm to 283 +/- 4.0 mOsm and CSF volume flow increased from 21.8 +/- 2.3 microliter/min to 54.9 +/- 4.1 microliter/min (means +/- S.E.). The slope of the regression line describing 22Na influx went from 1.04 to 1.79, while for 125I the slope went from 0 to 1.38. These results suggest that a common pathway may exist for the movement, through the brain and into the ventricular system, of water, ions and large molecules.
journal_name
Brain Resjournal_title
Brain researchauthors
Wald A,Hochwald GM,Gandhi Mdoi
10.1016/0006-8993(78)90885-5subject
Has Abstractpub_date
1978-08-04 00:00:00pages
283-90issue
2eissn
0006-8993issn
1872-6240pii
0006-8993(78)90885-5journal_volume
151pub_type
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