AJP - Regu Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Regul Integr Comp Physiol 256: R786-R791, 1989;
0363-6119/89 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Parmelee, J. T.
Right arrow Articles by Johanson, C. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Parmelee, J. T.
Right arrow Articles by Johanson, C. E.

AJP - Regulatory, Integrative and Comparative Physiology, Vol 256, Issue 3 786-R791, Copyright © 1989 by American Physiological Society

ARTICLES

Development of potassium transport capability by choroid plexus of infant rats

J. T. Parmelee and C. E. Johanson
Department of Clinical Neurosciences, Brown University/Rhode Island Hospital, Providence 02903.

Developmental maturation of K transport and Na+-K+-adenosinetriphosphatase (ATPase) function in the choroid plexus (CP) was investigated in infant rats. K fluxes (86Rb), Na+-K+-ATPase enzyme activities, and [3H]ouabain binding were measured in isolated, lateral CPs removed from anesthetized Sprague-Dawley rats of several ages ranging from 1 day to 6 wk. Morphological integrity of incubated tissue was confirmed by electron microscopy. CP epithelia accumulated K at a lower level during the 1st wk after birth (40 nmol/mg wet wt) compared with CP from rats aged 11-28 days (56 nmol/mg wet wt). However, efflux curves and efflux rate coefficients among the age groups were similar. Both Na+-K+-ATPase activity in CP tissue homogenates and [3H]ouabain binding to isolated CP began to increase between age 10 and 14 days. It is concluded that CP Na+-K+-ATPase has limited capacity in the lateral CP of neonatal rats but that this important transport function matures rapidly in the 1st 2-3 wk after birth.


This article has been cited by other articles:


Home page
 Am. J. Physiol. Cell Physiol.Home page
C. E. Johanson, J. E. Preston, A. Chodobski, E. G. Stopa, J. Szmydynger-Chodobska, and P. N. McMillan
AVP V1 receptor-mediated decrease in Cl- efflux and increase in dark cell number in choroid plexus epithelium
Am J Physiol Cell Physiol, January 1, 1999; 276(1): C82 - C90.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Cell Physiol.Home page
R. H. Angeletti, A. J. Bergwerk, P. M. Novikoff, and A. W. Wolkoff
Dichotomous development of the organic anion transport protein in liver and choroid plexus
Am J Physiol Cell Physiol, September 1, 1998; 275(3): C882 - C887.
[Abstract] [Full Text] [PDF]

Home page
 J. Histochem. Cytochem.Home page
C.-F. Dai and N. Kanoh
Cytochemical Localization of Ouabain-sensitive, K+-dependent p-Nitrophenylphosphatase Activity in the Choroid Plexus of Normal and Reserpinized Guinea Pigs
J. Histochem. Cytochem., August 1, 1998; 46(8): 975 - 976.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online