Light microscopic autoradiographic localization of [3H]pirenzepine and [3H](-)quinuclidinyl benzilate binding in human stellate ganglia

Henry I. Yamamura, Mark Watson, James K. Wamsley, Peter C. Johnson, William R. Roeske

Research output: Contribution to journalArticle

9 Scopus citations


We have utilized the LKB Ultrofilm method of autoradiography to anatomically localize putative M1 and M2 muscarinic receptor subtypes in human stellate ganglia. Ten micron sections were labeled in vitro with either 1 nM of the classical antagonist [3H](-)quinuclidinyl benzilate ([3H](-)QNB) or 20 nM of the non-classical antagonist [3H]pirenzepine ([3H]PZ), using 1 μM atropine sulfate to define non-specific binding for both ligands. Our results indicate that [3H](-)QNB and [3H]PZ binding sites are distributed within the principal ganglion cells and nerve bundles.

Original languageEnglish (US)
Pages (from-to)753-757
Number of pages5
JournalLife Sciences
Issue number7
StatePublished - Aug 13 1984
Externally publishedYes


ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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