Zonulae occludentes of the rat nephron under conditions of experimental expansion of blood and/or fluid volume

Andrew Evan, J. T. Baker, H. H. Bengele

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The zonula occludens (Z.O.) has been implicated as a major pathway for passive fluid movement from lateral intercellular spaces to lumen in response to an expansion of blood or fluid volume. The present study examines the Z.O. of adult rat nephrons in control and Ringer Locke or whole blood infused animals to determine whether varying the conditions of passive fluid movement would influence the structure of the Z.O. Rats were infused over 20 minutes with Ringer Locke (7% body weight) or whole blood (2.3% body weight). In the controls, 92%-94% of all Z.O. observed in proximal tubules and 100% of Z.O. from distal tubules and collecting ducts had fused outer leaflets. The approximate linear extent of the Z.O. was 140 Å for proximal tubules, 2,500 Å for distal tubules and 3,000 Å for collecting ducts. There was no significant difference in any of these values following the infusion with either Ringer Locke or whole blood. It is concluded that expansion of blood or fluid volume causes no detectable alteration in the fine structure of Z.O. under the conditions used in the present study.

Original languageEnglish (US)
Pages (from-to)139-150
Number of pages12
JournalAnatomical Record
Volume186
Issue number2
StatePublished - 1976
Externally publishedYes

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nephrons
tight junctions
Tight Junctions
Nephrons
rats
blood
proximal tubules
Body Weight
body weight
intercellular spaces
Extracellular Space
fluids

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Anatomy

Cite this

Zonulae occludentes of the rat nephron under conditions of experimental expansion of blood and/or fluid volume. / Evan, Andrew; Baker, J. T.; Bengele, H. H.

In: Anatomical Record, Vol. 186, No. 2, 1976, p. 139-150.

Research output: Contribution to journalArticle

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