Perfluorooctyl bromide (perflubron) attenuates oxidative injury to biological and nonbiological systems

Alexandre T. Rotta, Björn Gunnarsson, Bradley P. Fuhrman, Budi Wiryawan, Lynn J. Hernan, David M. Steinhorn

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Objective: To examine whether perfluorooctyl bromide (perflubron) is capable of protecting biological and nonbiological systems against oxidative damage through a mechanism independent of its known anti-inflammatory property. Design: A controlled, in vitro laboratory study. Setting: Research laboratory of a health sciences university. Subjects: Rat pulmonary artery endothelial cell cultures (biological system) and linoleic acid in sodium dodecyl sulfate micelles (nonbiological system). Interventions: Rat pulmonary artery endothelial cells labeled with dichlorofluorescein diacetate and incubated with perflubron or culture media (control) were exposed to H2O2. H 2O2-induced fluorescence of dichlorofluorescein diacetate was measured as an index of intracellular oxidative stress. In another experiment, linoleic acid in sodium dodecyl sulfate micelles was exposed to various concentrations of the azo initiator 2,2'-diazo-bis-(2-amidinopropane) dihydrochloride (2, 4, 20, and 50 mM) in the presence or absence of perflubron. Malondialdehyde measurements were obtained as a marker of oxidative damage to linoleic acid. Measurements and Main Results: Cell monolayers incubated with perflubron exhibited 66.6% attenuation in intracellular fluorescence compared with controls (p < .05). Linoleic acid in sodium dodecyl sulfate micelles incubated with perflubron and exposed to 2, 4, 20, or 50 mM of 2,2'-diazo-bis-(2-amidinopropane) dihydrochloride showed less evidence of lipid peroxidation as indicated by lower malondialdehyde measurements at 240 mins (10.6%, 16%, 41%, and 14.2%, respectively) compared with controls. Conclusions: Perflubron attenuates oxidative damage to both biological and nonbiological systems. This newly recognized property of perflubron is independent of its anti-inflammatory properties.

Original languageEnglish (US)
Pages (from-to)233-238
Number of pages6
JournalPediatric Critical Care Medicine
Volume4
Issue number2
DOIs
StatePublished - 2003
Externally publishedYes

Keywords

  • Fluorocarbons
  • Lipid peroxidation
  • Liquid ventilation
  • Oxidative stress

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Critical Care and Intensive Care Medicine

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