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Methylprednisolone prophylaxis protects against endotoxin-induced death in rabbits

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Abstract

Endotoxemia in patients can lead to sepsis and shock by activation of cellular and plasmatic systems. Corticosteroids are described to have a beneficial effect on these phenomena. In this study of controlled endotoxic shock, we investigated the protective effects of prophylactic corticosteroid treatment against activation of cellular and plasmatic systems. In this respect, a low-dose methylprednisolone (1 mg/kg body wt) treatment was compared with that of a high-dose methylprednisolone (40 mg/kg body wt) treatment. Endotoxin infusion induced death of all rabbits, which was associated with leukopenia, thrombopenia, increased levels ofβ-glucuronidase, and leukotriene B4 (LTB4) and decreased levels of complement total hemolytic activity (CH50) and tissue plasminogen activator (t-PA) activity. Both methylprednisolone regimens prevented death of the rabbits after endotoxin infusion, which correlated with a significant decrease of the granulocyte release productβ-glucuronidase (P < 0.01). The early leukopenia and thrombopenia were not prevented; however, both cell numbers returned more rapidly to baseline values than in the placebo group (P < 0.01,P < 0.05). The LTB4 and CH50 concentration and t-PA activity did not differ significantly between the treated and placebo groups. These results indicate that although methylprednisolone has no inhibitory effect on the activation of the complement, arachidonic acid, and fibrinolytic systems, it protected the animals from the deleterious effects of endotoxin shock by inhibition of leukocyte activation. In this regard a low dosage of methylprednisolone is equally effective as the most often recommended high dose.

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  1. N. J. G. Jansen

    Present address: Department of Pediatrics, State University of Groningen, The Netherlands

Authors and Affiliations

  1. Department of Cardiopulmonary Surgery, Research Division, State University of Groningen, The Netherlands

    N. J. G. Jansen, W. Van Oeveren, B. H. Hoiting & Ch. R. H. Wildevuur

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  1. N. J. G. Jansen
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  2. W. Van Oeveren
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  3. B. H. Hoiting
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  4. Ch. R. H. Wildevuur
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Jansen, N.J.G., Van Oeveren, W., Hoiting, B.H. et al. Methylprednisolone prophylaxis protects against endotoxin-induced death in rabbits. Inflammation 15, 91–101 (1991). https://doi.org/10.1007/BF00917504

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