Abstract:
:Cyclic GMP plays an important role in maintaining homeostasis in the gastric mucosa. NSAIDs damage the mucosa by mechanisms that may be mediated by alterations in the intragastric concentration of cyclic GMP. To test this hypothesis we studied the effects of the oral administration of acetylsalicylic acid (100, 300, and 500 mg/kg), piroxicam (5, 10, and 20 mg/kg) and sodium diclofenac (10, 25, 50, and 100 mg/kg), and of their interaction with zaprinast (5 mg/kg) and IBMX (10 mg/kg), on intragastric concentrations of cyclic GMP and the gastric erosive index in rats. All determinations were done 3 hr after the NSAID was given. All NSAIDs induced dose-dependent decreases in mucosal concentrations of cyclic GMP, which correlated inversely with the surface area showing mucosal injury. In contrast, cyclic GMP concentrations remained normal, and no intragastric damage was seen in rats given zaprinast (cyclic GMP-specific phosphodiesterase inhibitor) or IBMX (non-specific phosphodiesterase inhibitor) or in combination with NSAIDs. These findings are in line with the hypothesis that cyclic GMP is involved in the biochemical mechanisms of NSAID-induced gastric injury.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Herrerías JM,Esteban JM,Caballero-Plasencia AM,Valenzuela-Barranco M,Motilva V,Alarcón C,Martín J,Herrerías JM Jr,Esteban Pdoi
10.1023/a:1023020201005subject
Has Abstractpub_date
2003-05-01 00:00:00pages
986-91issue
5eissn
0163-2116issn
1573-2568journal_volume
48pub_type
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