Norepinephrine Pools in Rat Brain: Differences in Turnover Rates and Pathways of Metabolism
The rate of disappearance of intracisternally administered [$^{3}$H] norepinephrine from rat brain gradually declines as a multiphasic exponential function of time. Conversion to [$^{3}$H] normetanephrine accounts for a larger fraction of the [$^{3}$H] norepinephrine released in the brain shortly af...
Saved in:
Published in | Science (American Association for the Advancement of Science) Vol. 172; no. 3983; pp. 587 - 589 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
American Association for the Advancement of Science
07.05.1971
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The rate of disappearance of intracisternally administered [$^{3}$H] norepinephrine from rat brain gradually declines as a multiphasic exponential function of time. Conversion to [$^{3}$H] normetanephrine accounts for a larger fraction of the [$^{3}$H] norepinephrine released in the brain shortly after its intracisternal injection than that released at later times. Pools of norepinephrine in the brain thus appear to differ in their turnover rates and pathways of metabolism. The pool of norepinephrine with a rapid rate of turnover and an appreciable conversion to normetanephrine, identified by the techniques reported here, may correspond to a pool of newly synthesized norepinephrine in the brain. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.172.3983.587 |