spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

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
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Skaer, H. B.
Right arrow Articles by Harrison, J. B.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Skaer, H. B.
Right arrow Articles by Harrison, J. B.

Journal of Cell Science, Vol 88, Issue 2 251-265, Copyright © 1987 by Company of Biologists

JOURNAL ARTICLES

The permeability properties of septate junctions in Malpighian tubules of Rhodnius

HB Skaer, SH Maddrell and JB Harrison
Agricultural and Food Research Council Unit of Insect Neurophysiology & Pharmacology, Department of Zoology, Cambridge, UK.

This paper describes the structural characteristics and permeability properties of the smooth septate junctions between the upper Malpighian tubule cells of a blood-sucking bug, Rhodnius prolixus. The permeability of the paracellular route was tested only for solutes that could be demonstrated not to cross the epithelium via the cellular route. The intercellular clefts were readily permeated by sucrose, inulin and polyethylene glycol (PEG), showing a higher permeability to molecules of smaller radius (PEG versus sucrose). Negatively charged molecules permeated the clefts more readily than positively charged ones. The effects of pH, urea and luminal flow rate on permeability were studied. The results are discussed in relation to the physiological tightness of the Malpighian tubules to certain solutes and to its function as an excretory epithelium.


This article has been cited by other articles:


Home page
 JCBHome page
A. Wodarz, A. Ramrath, A. Grimm, and E. Knust
Drosophila Atypical Protein Kinase C Associates with Bazooka and Controls Polarity of Epithelia and Neuroblasts
J. Cell Biol., September 18, 2000; 150(6): 1361 - 1374.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Renal Physiol.Home page
T. M. Clark, T. K. Hayes, and K. W. Beyenbach
Dose-dependent effects of CRF-like diuretic peptide on transcellular and paracellular transport pathways
Am J Physiol Renal Physiol, May 1, 1998; 274(5): F834 - F840.
[Abstract] [Full Text] [PDF]


© The Company of Biologists Ltd 1987