Eleven substituted tricyclic quinazolines and their synthetic precursors were tested for antibacterial effects. 3-Chloromethylcarbonyl-2-methylquinazolin-4-thione and 5-phenyl-2,3-dihydro-1,2,4-triazolo[4,3-c]quinazolin-3-one had the highest antibacterial effect against Bacillus subtilis, the MIC values being 50 mg/L. Two tested derivatives were more active against Pseudomonas aeruginosa than ampicillin, the IC50 values being 80 and 100 mg/L. The most effective derivatives contained in the structure generally pharmacologically active chromophores--methyl group in position 2 and a chloromethyl configuration on the carbonyl group in position 3.

• MeSH
• antibakteriální látky chemická syntéza   chemie   farmakologie   MeSH
• Bacillus subtilis účinky léků   MeSH
• Bacteria účinky léků   MeSH
• chinazoliny chemická syntéza   chemie   farmakologie   MeSH
• Escherichia coli účinky léků   MeSH
• mikrobiální testy citlivosti MeSH
• Pseudomonas aeruginosa účinky léků   MeSH
• Staphylococcus aureus účinky léků   MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• antibakteriální látky MeSH
• chinazoliny MeSH

A selective Proteeae medium (SPM) for isolation and preliminary detection of species of genera Proteus, Morganella, and Providencia was evaluated. The SPM contains tryptose phosphate agar with phenolphthalein monophosphate (as substrate for phosphatase activity), bile salts and polymyxin B (as inhibitors). The selectivity of the SPM was tested by the ecometric method of quality assurance of culture media. Fourteen reference cultures of enterobacteria and fifty-four strains of Proteeae were tested for their absolute growth index (AGI). Ninety-five percent of tested Proteeae strains display an AGI above 2.5. The detected phosphatase activity proved to be able to discriminate colonies of members of the tribe Proteeae. The ability of SPM for primary isolation of members of Proteeae was tested on food and clinical material and 94 strains were isolated. In addition, the SPM was employed in routine practice of clinical microbiology. From 1016 clinical samples (stool, urine, vaginal and urethral swabs), 57 strains of Proteeae were detected by the SPM in contrast to 35 strains by the routine procedure. The difference amounts to nearly 40%.

• MeSH
• bakteriální infekce mikrobiologie   MeSH
• druhová specificita MeSH
• infekce spojené se zdravotní péčí mikrobiologie   MeSH
• kultivační média * chemie   MeSH
• lidé MeSH
• Morganella růst a vývoj   izolace a purifikace   MeSH
• potravinářská mikrobiologie MeSH
• Proteobacteria klasifikace   růst a vývoj   izolace a purifikace   MeSH
• Proteus růst a vývoj   izolace a purifikace   MeSH
• Providencia růst a vývoj   izolace a purifikace   MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• hodnotící studie MeSH
• Názvy látek
• kultivační média * MeSH