Full metadata record
DC FieldValueLanguage
dc.contributor.authorAbdel-Salam, Omar M. E.-
dc.contributor.authorBaiuomy, Ayman R.-
dc.date.accessioned2008-06-18T08:19:38Z-
dc.date.available2008-06-18T08:19:38Z-
dc.date.issued2008-04-17-
dc.identifier.issn1611-2156-
dc.identifier.urihttp://hdl.handle.net/2003/25699-
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-234-
dc.description.abstractCitric acid introduced into the stomach of mice at increasing concentrations of 0.1, 1 or 10 % (4.8 µM-0.48 mM; 95 µmol/kg-9.5 mmol/kg, 0.5 ml) caused dose-dependent inhibition of abdominal constrictions induced 1 h later by i. p. acetic acid injection by -51 % to -69.5 %. When administered at 10 % (0.48 mM, 0.5 ml) 15 min before nociceptive challenge, citric acid inhibited the nociceptive response by 96.8 %. Inhibition of the acetic acid-induced abdominal constrictions was also observed when lower doses of citric acid were introduced into the stomach (0.2 ml of 0.1-1 %; 38.1 µmol/kg-0.38 mmol/kg). The effect was evident as early as 5 min after administration of citric acid into the stomach and with the maximal effect being at 15-30 min after dosing. Lidocaine given orally 5 min prior to citric acid (1 %, 48 µM; 0.38 mmol/kg, 0.2 ml) prevented antinociception by citric acid, but lidocaine given 15 min before oral introduction of citric acid enhanced the citric acid-induced inhibition of the nociceptive response to acetic acid. The antinociceptive effect of orally administered citric acid (1 %, 48 µM; 0.38 mmol/kg, 0.2 ml) was increased by pre-treatment with propranolol (4 mg/kg, s. c.), yohimbine (4 mg/kg, s. c.), guanethidine (32 mg/kg, s. c.), but reduced after treatment with atropine (3 mg/kg, s. c.), which itself increased the nociceptive behavior. Similar inhibition of the acetic acid-induced nociceptive behavior was also observed when sodium citrate (pH 7.21) or 0.1 N HCl (pH 3) or 1 % sucrose solution (0.2 ml) was intragastrically given. It is suggested that citric acid might act to stimulate sensory afferents and that transmission of nociceptive information centrally leads to the activation of descending antinociceptive mechanism to a noxious stimulus.en
dc.language.isoende
dc.relation.ispartofseriesEXCLI Journal ; Vol. 7, 2008en
dc.subjectcitric aciden
dc.subjectintraperitoneal acetic aciden
dc.subjectmiceen
dc.subjectvisceral nociceptive painen
dc.subject.ddc610-
dc.titleCitric acid strongly inhibits visceral pain response in miceen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access-
eldorado.dnb.zdberstkatid2132560-1-
Appears in Collections:Original Articles

Files in This Item:
File Description SizeFormat 
abdel-salam17-04proof.pdfDNB136.14 kBAdobe PDFView/Open


This item is protected by original copyright



This item is protected by original copyright rightsstatements.org