title: Antioxidant action of the hexahydropyridoindole SMe1EC2 in the cellular system of isolated red blood cells in vitro.
abstract: OBJECTIVE
  The subject of this study was the hexahydropyridoindole compound SMe1EC2 with reported antioxidant and neuroprotective effects and low toxicity. In this study, the antioxidant action of SMe1EC2 was investigated in a greater detail in the system of isolated rat erythrocytes.
  
  
  METHODS
  First, the compound was subjected to the DPPH test. Second, the overall antioxidant action of the compound was studied in the cellular system of isolated rat erythrocytes oxidatively stressed by free radicals derived from either the hydrophilic azoinitiator AAPH or the lipophilic t-BuOOH, and compared with reference antioxidants.
  
  
  RESULTS
  The DPPH test revealed significant antiradical activity of SMe1EC2 comparable with that of the standard trolox. In the cellular system, SMe1EC2 protected red blood cells against free radical-initiated hemolysis. The overall antioxidant efficacy of SMe1EC2 relative to the reference antioxidant stobadine was strongly affected by the lipophilicity of the initiating free radical species.
  
  
  CONCLUSIONS
  The results proved high antiradical efficacy of SMe1EC2. In the system of t-BuOOH/isolated erythrocytes, a model cellular system of endogenously generated peroxyl radicals, SMe1EC2 significantly exceeded the parent stobadine in its antioxidant action. Considering the reported results of preclinical studies of SMe1EC2 showing its profound neuroprotective effects and low toxicity, the compound represents an example of a potential pharmacologically practicable antioxidant drug.
authors.affiliation: Slovak Academy of Sciences, Bratislava, Slovakia. Milan.Stefek@savba.sk
authors.forename: Milan
authors.initials: M
authors.lastname: Stefek
authors.forename: Ivana
authors.initials: I
authors.lastname: Milackova
authors.forename: Maria
authors.initials: M
authors.lastname: Juskova-Karasova
authors.forename: Vladimir
authors.initials: V
authors.lastname: Snirc
mesh_terms: D000578:Amidines; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000378:metabolism; D002243:Carbolines / Q000494:pharmacology; D002839:Chromans / Q000494:pharmacology; D004912:Erythrocytes / Q000187:drug effects*; D006461:Hemolysis / Q000187:drug effects; D007211:Indoles / Q000494:pharmacology*; D008297:Male; D010545:Peroxides / Q000378:metabolism; D010851:Picrates / Q000378:metabolism; D011725:Pyridines / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000578:Amidines; D000975:Antioxidants; D001713:Biphenyl Compounds; D002243:Carbolines; D002839:Chromans; D007211:Indoles; D010545:Peroxides; D010851:Picrates; D011725:Pyridines; C534359:SMe1EC2; C049375:perhydroxyl radical; C046728:2,2'-azobis(2-amidinopropane); C004931:1,1-diphenyl-2-picrylhydrazyl; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid; C100106:dicarbine