Sulfapyridine

Sulfapyridine, a major metabolite of Sulfasalazine, is a sulfonamide antibiotic agent. Sulfapyridine inhibits recombinant P. carinii dihydropteroate synthetase (DHPS) with an IC50 of 0.18 μM. Sulfapyridine has antibacterial, anti-inflammatory and anti-rheumatic activities[1][2][3].

[1]Kazuki Omoteyama, et al. Effects of salazosulfapyridine on the profile of cell surface proteins, revealed by biotinylation of cell surface proteins and 2-dimentional electrophoresis. Biochim Biophys Acta Proteins Proteom. 2019 Jan;1867(1):47-56.|[2]J J Andreasen, et al. In vitro susceptibility of diarrhoea producing gram negative enteric bacteria to sulfasalazine, 5-aminosalicylic acid, sulfapyridine and four quinolones. Brief report. APMIS. 1988 Jun;96(6):568-70.|[3]Y L Hong, et al. Inhibition of recombinant Pneumocystis carinii dihydropteroate synthetase by sulfa drugs. Antimicrob Agents Chemother. 1995 Aug;39(8):1756-63.|[4]H M Kim, et al. Inhibitory effect of mast cell-mediated immediate-type allergic reactions by sulfapyridine. Immunopharmacol Immunotoxicol. 2000 May;22(2):253-66.