title: [Influence of synthetic antioxidants on persistence characteristics of microorganisms].
abstract: OBJECTIVE
  To assess antipersistence characteristics of synthetic antioxidants belonging to class of triterpenoids.
  
  
  METHODS
  Synthetic antioxidants synthesized in the Institute of Organic Chemistry of Russian Academy of Science and belonging to class of triterpenoids were used in the study. Antioxidant activity of compounds was assessed by amperometric method using analyzer "TsvetYauza-AAA-01" ("Chimavtomatika Ltd.", Moscow) and expressed in quercetin units (QU). Influence of synthetic antioxidants on persistence characteristics (antilysozyme, anticomplement, and anticarnosine activities) of Klebsiella pneumoniae 278 (Tarasevitch State Institute of Standardization. and Control for Immunobiologic Preparations) and Staphylococcus aureus was determined by conventional methods.
  
  
  RESULTS
  Antioxidant activity of studied compounds varied from 1.53 QU to 11.82 QU. Compound No. 5, which had maximal antioxidant activity and was characterized by presence of 2 atoms of oxygen and hydroxyl radical in its structure, influenced on expression of persistence characteristics of studied microorganisms most efficiently.
  
  
  CONCLUSIONS
  Obtained results could be used for the development of new drugs aimed against persisting pathogens.
authors.forename: T M
authors.initials: TM
authors.lastname: Utkina
authors.forename: O L
authors.initials: OL
authors.lastname: Kartashova
authors.forename: S B
authors.initials: SB
authors.lastname: Kirgizova
mesh_terms: D000975:Antioxidants / Q000138:chemical synthesis / Q000494:pharmacology*; D007711:Klebsiella pneumoniae / Q000187:drug effects* / Q000254:growth & development; D013211:Staphylococcus aureus / Q000187:drug effects* / Q000254:growth & development; D013729:Terpenes / Q000138:chemical synthesis / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D013729:Terpenes