“…The enzymatic reaction was started by adding 100 µl of clear supernatant in a spectrophotometric cuvette containing 800 µl of 0.3 mM reduced nicotinamide adenine dinucleotide phosphate (NADPH), 100 µl of 6 mM 5,5-dithiobis-2-nitrobenzoic acid (DTNB) and 10 µl of 50 units/ml GSH reductase Nedocromil sodium (NDS) and sodium cromoglycate (SCG) are mast cell stabilizers that are widely used as prophylactic agents in the treatment of bronchial asthma. Pharmacological studies have demonstrated that NDS is a more potent (Verin et al, 1999;Spezia et al, 1993;Lal et al, 1993) or at least equally effective (Kelly et al, 2001;Robuschi et al, 1997;De Benedictis et al, 1995) as the progenitor of SCG. The benefi cial effects of SCG in gastrointestinal injury have been reported in experimental (Ali, 1995;Beck et al, 1989;Ogle and Hui, 1995;Goossens et al, 1987) and clinical (Di Gioacchino et al, 1990;Moots et al, 1988;Grace et al, 1987;Caporali et al, 1986) studies, whereas the gastroprotective activity of NDS remains to be explored.…”