title: In-vitro studies of two 5-nitroimidazole derivatives.
abstract: This paper reports the findings obtained using two new compounds belonging to the 5-nitroimidazole family: sulphuridazole (V1) and sulphonidazole (V2). We first assessed their antimicrobial activity on Clostridia spp. and then extended the study to Gram-positive and Gram-negative aerobic microorganisms and to Candida albicans. Their MICs were compared with those of metronidazole. The findings show that the antibacterial and antimycotic activity of sulphonidazole is greater than that of sulphuridazole, while metronidazole is not active against any aerobic organism. It also emerges that the NO2 group is indispensable for all the microorganisms assayed and that sulphuridazole and sulphonidazole are the first two 5-nitroimidazoles active against C. albicans. The redox potentials of the 5-nitroimidozoles studied suggest that their action mechanism is mainly based on redox processes.
authors.affiliation: Department of Biomedical Sciences, Section of Pharmacology, University of Modena, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Castelli
authors.forename: M
authors.initials: M
authors.lastname: Malagoli
authors.forename: A I
authors.initials: AI
authors.lastname: Ruberto
authors.forename: A
authors.initials: A
authors.lastname: Baggio
authors.forename: C
authors.initials: C
authors.lastname: Casolari
authors.forename: C
authors.initials: C
authors.lastname: Cermelli
authors.forename: M R
authors.initials: MR
authors.lastname: Bossa
authors.forename: T
authors.initials: T
authors.lastname: Rossi
authors.forename: F
authors.initials: F
authors.lastname: Paolucci
authors.forename: S
authors.initials: S
authors.lastname: Roffia
mesh_terms: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D002175:Candida / Q000187:drug effects; D003013:Clostridium / Q000187:drug effects; D004563:Electrochemistry / Q000379:methods; D004926:Escherichia coli / Q000187:drug effects; D008795:Metronidazole / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D009593:Nitroimidazoles / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology*; D010084:Oxidation-Reduction; D013450:Sulfones / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D009593:Nitroimidazoles; D013450:Sulfones; D008795:Metronidazole; C108406:sulfuridazole; C108407:sulfonidazole; C052587:4-nitroimidazole