G Siro-Brigiani

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BACKGROUND Tachykinins (TKs) have been shown to be involved in the excitatory enteric motor pathway. This study aimed to examine the direct and nerve-mediated effect of specific NK1, NK2 and NK3 receptor agonists and antagonists in colonic preparations from control subjects and patients with idiopathic chronic constipation (ICC). MATERIALS AND METHODS(More)
Muscimol and diazepam reduced the number of avoidance responses of rats subjected to a conditioned avoidance situation. Diazepam, in a dose which per se did not influence the conditioned responses, significantly increased the disruption of avoidance behavior induced by muscimol. Bicuculline counteracted the avoidance impairment produced by muscimol, whereas(More)
BACKGROUND Indomethacin-induced enteritis is a model of inflammatory bowel disease. MATERIALS AND METHODS To further characterize this model, rats received two injections of indomethacin (7.5 mg kg(-1)) 24 h apart and histological damage of intestinal mucosa, oxidative stress, alterations of intestinal motility and mesenteric vascular bed (MVB) reactivity(More)
Lidocaine, mepivacaine and prilocaine cause in rats an increase of the frequency of the spontaneous contractions and an increase of the tone on the detrusor muscle of the urinary bladder. These effects are not antagonized by atropine and by fentola mine. On the contrary verapamil and papaverine antagonize these above effects.
The effects of three aminoglycoside antibiotics on the rat isolated phrenic nerve-diaphragm preparation and on the sciatic nerve-gastrocnemius muscle preparation were investigated. Tobramycin, amikacin and ribostamycin produced dose-dependent neuromuscular blockade of the diaphragm twitches. Comparison of results showed that the neuromuscular blocking(More)
The Authors study pharmacological actions of lycorine, alkaloid of Lycoris radiata. On the basis that anti-inflammatory substances have a choleretic effect, the activity of lycorine on biliary secretion of rats has been investigated. Lycorine, at a dose of 1 mg/kg induces, in rats anaesthetized with urethane (1,2 g/kg i.m.), a marked choleretic effect. This(More)