Octopamine-like immunoreactivity in the dorsal unpaired median (DUM) neurons innervating the accessory gland of the male cockroach Periplaneta americana

Irina G. Sinakevitch, Michel Geffard, Marcel Pelhate, Bruno Lapied

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The musculature of the mushroom-shaped accessory gland receives innervation from trunks 5C1 of the phallic nerves, which arise from the posterior part of the terminal abdominal ganglion of the male cockroach Periplaneta americana. Anterograde cobalt filling through trunks 5C1 with the subsequent precipitating procedure has shown the fine innervation of the accessory gland. By retrograde cobalt filling through the same trunks, different types of cells have been mapped in the terminal abdominal ganglion. About 25 dorsal unpaired median (DUM) neurons have been identified among them. About 36 octopamine-like immunoreactive DUM neurons with large somata have been characterized in whole-mount preparations of the terminal abdominal ganglion. The combination of the cobalt-filling technique with immunohistochemical mapping of cells suggests an octopaminergic innervation of the musculature of the accessory gland by DUM neurons.

Original languageEnglish (US)
Pages (from-to)15-21
Number of pages7
JournalCell And Tissue Research
Volume276
Issue number1
DOIs
StatePublished - Apr 1 1994

Keywords

  • Accessory glands
  • DUM neurons
  • Immunohistochemistry
  • Nervous system, insect
  • Octopamine
  • Periplaneta americana (Insecta)

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology
  • Cell Biology

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