title: Effect of Perilla frutescens aqueous extract on free radical production by human neutrophil leukocytes.
abstract: OBJECTIVE
  The present study was intended to evaluate the antioxidant properties of aqueous extract of the Perilla frutescens (L.) Britton.
  
  
  METHODS
  The antioxidant properties of Perilla frutescens were analyzed employing neutrophil leukocytes stimulated by the nonopsonized Escherichia coli. The neutrophil leukocytes were affected by adding an aqueous extract of Perilla. The generation of the reactive oxygen species by neutrophil leukocytes was investigated using assessment of luminol- and lucigenin-dependent chemiluminescence.
  
  
  RESULTS
  We found out that the treatment of neutrophil leukocytes with the Perilla aqueous extract inhibited the release of reactive oxygen species, measured as luminol- and lucigenin-dependent chemiluminescence, by about 30% and more than 90%, respectively.
  
  
  CONCLUSIONS
  The results of this study show that the aqueous extract of the Perilla frutescens inhibits significantly free radical production by neutrophil leukocytes, which was especially obvious when the lucigenin-dependent chemiluminescence assessment method was applied.
authors.affiliation: Department of Dental and Maxillofacial Orthopedics, Kaunas University of Medicine, Kaunas, Lithuania. zekonisg@hotmail.com
authors.forename: Gediminas
authors.initials: G
authors.lastname: Zekonis
authors.forename: Jonas
authors.initials: J
authors.lastname: Zekonis
authors.forename: Renata
authors.initials: R
authors.lastname: Sadzeviciene
authors.forename: Genovaite
authors.initials: G
authors.lastname: Simoniene
authors.forename: Egidijus
authors.initials: E
authors.lastname: Kevelaitis
mesh_terms: D000166:Acridines; D000293:Adolescent; D000328:Adult; D000975:Antioxidants / Q000494:pharmacology; D004926:Escherichia coli; D005609:Free Radicals / Q000378:metabolism; D006801:Humans; D007202:Indicators and Reagents; D049449:Luminescence; D008165:Luminol; D008875:Middle Aged; D018375:Neutrophil Activation; D009504:Neutrophils / Q000187:drug effects* / Q000378:metabolism; D031344:Perilla frutescens; D010936:Plant Extracts / Q000494:pharmacology; D017382:Reactive Oxygen Species / Q000378:metabolism; D018709:Statistics, Nonparametric; D013997:Time Factors
chemical_list: D000166:Acridines; D000975:Antioxidants; D005609:Free Radicals; D007202:Indicators and Reagents; D010936:Plant Extracts; D017382:Reactive Oxygen Species; C033472:10,10'-dimethyl-9,9'-biacridinium; D008165:Luminol