Antiedematogenic activity of the indole derivative N-salicyloyltryptamine in animal models

Abstract

The N-salicyloyltryptamine (NST) is an indole derivative compound analogue to the alkaloid N-benzoyltryptamine. In the present study, the antiedematogenic activity of NST was investigated in animal models. Firstly, the acute toxicity for NST was assessed according to the OECD Guideline no. 423. The potential NST-induced antiedematogenic activity was evaluated by carrageenan-induced paw edema in rats, as well as by dextran-, compound 48/80-, histamine-, serotonin-, capsaicine-, and prostaglandin E2-induced paw edema in mice. The effect of NST on compound 48/80-induced ex vivo mast cell degranulation on mice mesenteric bed was investigated. No death or alteration of behavioral parameters was observed after administration of NST (2000 mg/kg, i.p.) during the observation time of 14 days. The NST (100 and 200 mg/kg, i.p.) inhibited the carrageenan-induced edema from the 1st to the 5th hour (**p<0.01; ***p<0.001). The edematogenic activity induced by dextran, compound 48/80, histamine, serotonin, capsaicin, and prostaglandin E2 was inhibited by NST (100 mg/kg, i.p.) throughout the observation period (**p<0.01; ***p<0.001). The pretreatment with NST (50, 100 or 200 mg/kg, i.p) attenuates the compound 48/80-induced mast cell degranulation (**p<0.01; ***p<0.001). Thus, the inhibition of both mast cell degranulation and release of endogenous mediators are probably involved in the NST-induced antiedematogenic effect.

Anti-Inflammatory and Antioxidant Effects of the Indole-Derived N-Salicyloyltryptamine on Peritonitis and Joint Disability Induced by Carrageenan in Rodents

“…NST consists of an N-benzoyltryptamine-related chemical structure, an isolated alkaloid from the plant species Myrtopsis myrtoidea (Baill) Guillaumin [2]. Furthermore, a recent study demonstrated no sign of apparent toxicity and no animal deaths after intraperitoneal administration of NST at 2000 mg/kg followed by 14 days of observation [10].…”

“…e presence of oxidizing agents has been associated with cardiovascular diseases [6], diabetes [7], cancer, [8], rheumatoid arthritis, and arthrosis [9]. e study shows that NST exerts antiedematogenic activity in in vivo models induced by different phlogistic agents [10]. However, no studies have been found in the literature showing the antioxidant activity of NST in vivo protocols.…”