Localization of 3H‐norepinephrine binding sites in the trout gill

Nancy P. Nekvasil, Kenneth R. Olson

Research output: Contribution to journalArticle

9 Scopus citations


Tritiated norepinephrine (Nepi) or Epinephrine (Epi) was perfused through isolated gills of rainbow trout (Salmo gairdneri) and the affinity of vascular tissues for the amines examined by autoradiography. Pillar cells and certain endothelial cells in the filamental sinus accumulate 3H‐Nepi extensively. The afferent and efferent filamental arteries and filamental nutrient vessels did not bind 3H‐Nepi. Pillar cell and venous endothelial accumulation is selective for Nepi; Epi is not accumulated by these cells, and Nepi uptake can be inhibited by imipramine. These results suggest that pillar and venous endothelial cells are involved in regulation of plasma Nepi.

Original languageEnglish (US)
Pages (from-to)309-313
Number of pages5
JournalJournal of Experimental Zoology
Issue number2
StatePublished - Aug 1985

ASJC Scopus subject areas

  • Animal Science and Zoology

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