Neuroendocrine peptide levels in the gastrointestinal tract of mice after unilateral cervical vagotomy.
The effects of left and right unilateral cervical vagotomy on the content of several neuroendocrine peptides were studied in different parts of the murine gastrointestinal tract, known to receive vagal innervation. The neuroendocrine peptides investigated were secretin, gastric inhibitory peptide (GIP), gastrin, motilin, peptide YY (PYY), somatostatin, substance P, VIP, neurotensin, neuropeptide Y (NPY), and galanin. The neuroendocrine peptide concentration was affected after both left and right vagotomy, and that the changes in the concentrations of the neuroendocrine peptide levels occurred in all the gastrointestinal segments investigated, namely antrum, small and large intestine. However, these changes varied, depending on which side was vagotomized and the interval after vagotomy. It is concluded that the vagus nerve had an important impact on the neuroendocrine system in the murine gut. It is suggested, furthermore that the contradictory results obtained earlier on the effect of vagotomy on the gastrointestinal peptides may depend on differences in the vagotomy methods used and on differences in observation time after vagotomy.
El-Salhy
M
M
Section for Gastroenterology and Hepatology, Department of Medicine, University Hospital, S-901 85, Umeå, Sweden. magdy.el_salhy@medicin.umu.se
Danielsson
A
A
Axelsson
H
H
Qian
B F
BF
D000818:Animals; D002584:Cervix Uteri / Q000294:innervation*; D003106:Colon / Q000378:metabolism / Q000473:pathology; D004064:Digestive System / Q000378:metabolism* / Q000473:pathology; D004386:Duodenum / Q000378:metabolism / Q000473:pathology; D005260:Female; D019004:Galanin / Q000378:metabolism; D005753:Gastric Mucosa / Q000378:metabolism; D005755:Gastrins / Q000378:metabolism; D007082:Ileum / Q000378:metabolism / Q000473:pathology; D008297:Male; D051379:Mice; D009478:Neuropeptide Y / Q000378:metabolism; D009479:Neuropeptides / Q000378:metabolism*; D009496:Neurotensin / Q000378:metabolism; D013004:Somatostatin / Q000378:metabolism; D013270:Stomach / Q000473:pathology; D013373:Substance P / Q000378:metabolism; D014628:Vagotomy; D014630:Vagus Nerve / Q000502:physiology* / Q000601:surgery; D014660:Vasoactive Intestinal Peptide / Q000378:metabolism
D005755:Gastrins; D009478:Neuropeptide Y; D009479:Neuropeptides; D013373:Substance P; D014660:Vasoactive Intestinal Peptide; D009496:Neurotensin; D013004:Somatostatin; D019004:Galanin