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Camostat mesilate, a protease inhibitor, inhibits visceral sensitivity and spinal c-fos expression in rats with acute restraint stress / 南方医科大学学报
Journal of Southern Medical University ; (12): 1546-1550, 2014.
Article Dans Chinois | WPRIM | ID: wpr-329249
ABSTRACT
<p><b>OBJECTIVE</b>To observe the effect of gut protease activity on visceral hypersensitivity in rats with acute restraint stress.</p><p><b>METHODS</b>Sprague-Dawley rats were given 30, 100 or 300 mg/kg camostat mesilate (CM), a protease inhibitor, or saline intragastrically 30 min before acute restraint stress induced by wrapping the fore shoulders, upper forelimbs and thoracic trunk for 2 h. Visceral perception of the rats was quantified as the visceral motor response with an electromyography, and the rectal mucosa and feces protease activity and spinal c-fos expression were measured.</p><p><b>RESULTS</b>CM dose-dependently reduced visceral sensitization elicited by rectal distension, but these doses did not completely inhibit stress-induced visceral sensitization. In normal rats, c-fos expression was found mainly in the superal spinal cord dorsal horn, and after the administration the CM, c-fos-positive cells decreased significantly in all dose groups (P<0.05). In 30 mg/kg CM group, fecal and rectal mucosal protease activity significantly decreased as compared with that in the stress group (P<0.05), and as CM dose increased to 100 and 300 mg/kg, the protease activity decreased even further (P<0.01).</p><p><b>CONCLUSION</b>The gut protease is involved in acute stress-induced visceral hypersensitivity, and CM can lower the visceral sensitivity and spinal c-fos expression in rats.</p>
Sujets)
Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Pharmacologie / Inhibiteurs de protéases / Moelle spinale / Stress physiologique / Contention physique / Protéines proto-oncogènes c-fos / Gabexate / Rat Sprague-Dawley / Métabolisme Type d'étude: Etude diagnostique Limites du sujet: Animaux langue: Chinois Texte intégral: Journal of Southern Medical University Année: 2014 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Pharmacologie / Inhibiteurs de protéases / Moelle spinale / Stress physiologique / Contention physique / Protéines proto-oncogènes c-fos / Gabexate / Rat Sprague-Dawley / Métabolisme Type d'étude: Etude diagnostique Limites du sujet: Animaux langue: Chinois Texte intégral: Journal of Southern Medical University Année: 2014 Type: Article