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Anatomical Relationship Between Enkephalin‐Containing Neurones and Caecum‐Projecting Neurones in the Chicken Intestinal Nerve
Author(s) -
Ohmori Y.,
Suzuki M.,
Fukuta K.
Publication year - 2003
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1046/j.1439-0264.2003.00457.x
Subject(s) - caecum , anatomy , biology , cholera toxin , enkephalin , cell bodies , ileum , medicine , endocrinology , central nervous system , receptor , biochemistry , opioid
Summary The anatomical relationship between enkephalin‐immunoreactive neurones and caecum‐projecting neurones in the intestinal nerve of Remak (INR) of the chicken was investigated using retrograde transport of cholera toxin subunit B and immunohistochemistry with anti‐enkephalin serum. After injection of cholera toxin into the base or body of the caecum, labelled neurones were mainly observed in the cranial part of the rectal INR. Enkephalin‐immunoreactive neuronal cell bodies were found in the caudal part of the rectal INR and their fibres closely surrounded caecum‐projecting neurones in the cranial part of the rectal INR. Diameters of caecum‐projecting neurones surrounded with enkephalin‐containing terminals were significantly larger than those of caecum‐ projecting neurones without enkephalin‐terminals ( P < 0.01). From these results, it is suggested that enkephalin‐containing neurones are able to affect large‐sized caecum‐projecting neurones. This pathway may be involved with unique motility of the rectum and caeca that uric acid is retrogradely carried from the cloaca to the caeca.