Linked Life Data

10771495

Source:http://linkedlifedata.com/resource/pubmed/id/10771495

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-6-26
pubmed:abstractText
Fedotozine, a kappa opioid agonist, reverses digestive ileus caused by acetic acid (AA)-induced visceral pain in rats. The aims of this study were: to map, in conscious rats, central pathways activated by AA using Fos as a marker of neuronal activation; to characterize primary afferent fibres involved in this activation; and to investigate the effect of fedotozine on AA-induced Fos expression. AA (0.6%; 10 mL kg-1) was injected i.p. in conscious rats either untreated; pretreated 14 days before with capsaicin; pretreated 20 min previously with fedotozine; or pretreated 2 h prior to fedotozine with the kappa-antagonist nor-binaltorphimine (nor-BNI). Controls received the vehicle alone. 60 min after injection of AA, rats were processed for Fos immunohistochemistry. Visceral pain was assessed by counting abdominal cramps. AA induced Fos in the thoraco-lumbar spinal cord (laminae I, V, VII and X) and numerous brain structures such as the nucleus tractus solitarius, and paraventricular nucleus (PVN) of the hypothalamus, whereas almost no Fos labelling was observed in controls. Capsaicin pretreatment blocked AA-induced Fos in all structures tested. Fedotozine significantly decreased AA-induced abdominal cramps and Fos immunoreactivity in the spinal cord and PVN, this effect being reversed by nor-BNI pretreatment. AA induces Fos in the spinal cord and numerous brain nucuei, some of which are involved in the control of digestive motility in rats. This effect is mediated through capsaicin-sensitive afferent fibres and prevented by fedotozine most likely through a peripheral action on visceral afferents.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1350-1925
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
135-47
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10771495-Abdominal Pain, pubmed-meshheading:10771495-Acetic Acid, pubmed-meshheading:10771495-Afferent Pathways, pubmed-meshheading:10771495-Animals, pubmed-meshheading:10771495-Benzyl Compounds, pubmed-meshheading:10771495-Brain, pubmed-meshheading:10771495-Capsaicin, pubmed-meshheading:10771495-Gene Expression Regulation, pubmed-meshheading:10771495-Genes, fos, pubmed-meshheading:10771495-Injections, Intraperitoneal, pubmed-meshheading:10771495-Intestinal Obstruction, pubmed-meshheading:10771495-Male, pubmed-meshheading:10771495-Naltrexone, pubmed-meshheading:10771495-Paraventricular Hypothalamic Nucleus, pubmed-meshheading:10771495-Propylamines, pubmed-meshheading:10771495-Proto-Oncogene Proteins c-fos, pubmed-meshheading:10771495-Rats, pubmed-meshheading:10771495-Rats, Sprague-Dawley, pubmed-meshheading:10771495-Receptors, Opioid, kappa, pubmed-meshheading:10771495-Solitary Nucleus, pubmed-meshheading:10771495-Spinal Cord, pubmed-meshheading:10771495-Supraoptic Nucleus
pubmed:year
2000
pubmed:articleTitle
Fedotozine, a kappa-opioid agonist, prevents spinal and supra-spinal Fos expression induced by a noxious visceral stimulus in the rat.
pubmed:affiliation
Laboratoire de Physiologie, Section Neurophysiologie, Institut National de la Santé et de la Recherche Médicale, U318, Hôpital A. Michallon, Centre Hospitalier Universitaire, Grenoble, France. bruno.bonaz@ujf-grenoble.fr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't