The Journal of trauma · 2004
Heterogeneity in the effect of albumin and other resuscitation fluids on intracellular oxygen free radical production.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод в очереди
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Simpkins Cuthbert O, Little Donnie, Brenner Andrew, Hill January A, Griswold John A
Аннотация
BACKGROUND: We hypothesized that by studying a suspension of a single cell type in various resuscitation fluids, we could compare their effects on parameters associated with cell death.
METHODS: Jurkat cells were suspended in resuscitation fluids. Using flow cytometry, light scatter, phosphatidylserine translocation, propidium iodide uptake, and intracellular H2O2 production were measured.
RESULTS: Buffer (pH, 7.4) and albumin added to Ringer's lactate inhibited the adverse changes, including intracellular oxygen free radical production. Oxygen free radical production was variable within the cell population and inhibited by albumin but not other colloids or crystalloids. This correlated well with the ability of albumin to enhance metabolic activity. A flavoprotein inhibitor blocked H2O2 production, suggesting that mitochondria are the source of the H2O2 and the variability.
CONCLUSION: Oxygen free radical inhibition by albumin could explain both its beneficial and its harmful effects.
METHODS: Jurkat cells were suspended in resuscitation fluids. Using flow cytometry, light scatter, phosphatidylserine translocation, propidium iodide uptake, and intracellular H2O2 production were measured.
RESULTS: Buffer (pH, 7.4) and albumin added to Ringer's lactate inhibited the adverse changes, including intracellular oxygen free radical production. Oxygen free radical production was variable within the cell population and inhibited by albumin but not other colloids or crystalloids. This correlated well with the ability of albumin to enhance metabolic activity. A flavoprotein inhibitor blocked H2O2 production, suggesting that mitochondria are the source of the H2O2 and the variability.
CONCLUSION: Oxygen free radical inhibition by albumin could explain both its beneficial and its harmful effects.