HOMEPRODUCTSCOMPANYCONTACTFAQResearchDictionaryPharmaSign Up FREE or Login

Met5-enkephalin-Arg6-Gly7-Leu8-like immunoreactivity in the pelvic ganglion of the male rat: a light and electron microscopic study.

Abstract
By using both light and electron microscopic immunocytochemical methods, Met5-Enkephalin-Arg6-Gly7-Leu8 (MEAGL)-like immunoreactive structures were detected in the pelvic ganglion of male rats. Denervation studies were carried out to determine the origin of these immunoreactive fibers and the projection of immunoreactive neurons within the pelvic ganglion. MEAGL-like immunoreactivity was found in numerous axon boutons, some small, intensely fluorescent (SIF) cells, and a few principal ganglion neurons. Most of the immunoreactive nerve fibers formed pericellular plexuses surrounding the ganglion cells. In addition, there were a few scattered varicose fibers. These fiber plexuses could be classified into two types: type I (approximately 90% of fibers), which consisted of 80-120 small boutons that synapsed on either the dendrites (80% of cases) or somata (20% of cases) of principal neurons; and type II (approximately 10% of fibers), which consisted of 20-40 larger boutons that formed axodendritic synapses exclusively. After transection of the hypogastric and pelvic nerves, virtually all of the pericellular fiber plexuses disappeared, whereas the scattered varicose fibers remained. According to their ultrastructure, these remaining fibers were considered to arise from SIF cells. Following the injection of Fast Blue into the bladder wall, some of the MEAGL-like immunoreactive principal neurons were retrogradely labeled. The results of this study indicate that there are two origins for the MEAGL-like immunoreactive fibers detected in the pelvic ganglion: most arise from preganglionic neurons in the spinal cord, and a small proportion may originate from intraganglionic MEAGL-like immunoreactive SIF cells or principal neurons. Some MEAGL-like immunoreactive principal neurons may project to the urinary bladder.
AuthorsB R Wang, E Senba, M Tohyama
JournalThe Journal of comparative neurology (J Comp Neurol) Vol. 293 Issue 1 Pg. 26-38 (Mar 01 1990) ISSN: 0021-9967 [Print] United States
PMID2312790 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Enkephalin, Methionine
  • enkephalin-Met, Arg(6)-Gly(7)-Leu(8)-
Topics
  • Animals
  • Enkephalin, Methionine (analogs & derivatives, metabolism)
  • Hypogastric Plexus (metabolism, ultrastructure)
  • Immunohistochemistry
  • Male
  • Rats
  • Rats, Inbred Strains

Join CureHunter, for free Research Interface BASIC access!

Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease. Find out why thousands of doctors, pharma researchers and patient activists around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!


Choose Username:
Email:
Password:
Verify Password:
Enter Code Shown: