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Search: L773:1071 5762 OR L773:1029 2470 > (2000-2004)

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1.
  • Basu, Samar, et al. (author)
  • Evidence for Time-dependent Maximum Increase ofFree Radical Damage and Eicosanoid Formation in theBrain as Related to Duration of Cardiac Arrest andCardio-pulmonary Resuscitation
  • 2003
  • In: Free radical research. - : Informa UK Limited. - 1071-5762 .- 1029-2470. ; 37:3, s. 251-256
  • Journal article (peer-reviewed)abstract
    • Recovery of neurological function in patients following cardiac arrest and cardiopulmonary resuscitation (CPR) is a complex event. Free radical induced oxidative stress is supposed to be involved in this process. We studied levels of 8-iso-PGF2alpha (indicating oxidative injury) and 15-keto-dihydro-PGF2alpha (indicating inflammatory response) in venous plasma obtained from the jugular bulb in a porcine model of experimental cardiopulmonary resuscitation (CPR) where 2, 5, 8, 10 or 12 min of ventricular fibrillation (VF) was followed by 5 or 8 min of closed-chest CPR. A significant increase of 8-iso-PGF2alpha was observed immediately following restoration of spontaneous circulation in all experiments of various duration of VF and CPR. No such increase was seen in a control group. When compared between the groups there was a duration-dependent maximum increase of 8-iso-PGF2alpha which was greatest in animals subjected to the longest period (VF12 min + CPR8 min) of no or low blood flow. In contrast, the greatest increase of 15-keto-dihydro-PGF2alpha was observed in the 13 min group (VF8 min + CPR5 min). Thus, a time-dependent cerebral oxidative injury occurs in conjunction which cardiac arrest and CPR.
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  • Brunk, Ulf, et al. (author)
  • Lysosomes, iron and oxidative stress
  • 2003
  • In: Free radical research. - 1071-5762 .- 1029-2470. ; 37, s. 34-34
  • Conference paper (other academic/artistic)
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  • Persson, Bertil, et al. (author)
  • The redox state of glutathione, cysteine and homocysteine in the extracellular fluid in the skin.
  • 2002
  • In: Free Radical Research. - : Informa UK Limited. - 1029-2470 .- 1071-5762. ; 36:2, s. 151-156
  • Journal article (peer-reviewed)abstract
    • Glutathione, the most abundant low-molecular weight thiol in the skin, has been shown to protect the skin from both photobiological and chemical injury. The thiols, glutathione in particular, have also been shown to be crucially involved in defence against contact allergens. Since the levels of extracellular thiol concentrations are important determinants of intracellular thiol status, we have compared the normal concentrations and the redox status of the main low-molecular weight thiol components in the extracellular fluid at the dermo-epidermal junction with the corresponding plasma levels. In their sulfhydryl form, all three thiols, i.e. glutathione, cysteine and homocysteine, were more abundant in experimental skin blister fluid than in plasma, as were the free disulfides of glutathione and homocysteine, whereas the free disulfides of cysteine were about the same in blister fluid and in plasma. Protein mixed disulfide levels were higher in plasma than in blister fluid. The present results provide information concerning the extracellular defence in the skin.
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  • Result 1-10 of 19

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