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We studied the effects of the new antioxidant drug U-83836E during splanchnic artery occlusion (SAO) shock in the rat. Serum tumor necrosis factor (TNF-alpha), white blood cell (WBC) count, mean arterial blood pressure (MAP), survival rate and the responsiveness to acetylcholine of aortic rings were investigated. SAO shock produced a marked increase in serum TNF-alpha (241.4 +/- 18.2 U/ml vs Not Detectable in basal), reduced MAP (51.4 +/- 4 mmHg vs 85.1 +/- 5 mmHg), survival time (80 +/- 10 min vs > 240 min), WBC count (2.8 +/- 0.4 x 10(3)/mm3 cells vs 11.7 +/- 0.9 x 10(3)/mm3 cells) and blunted the responsiveness to ACh of aortic rings (60 +/- 3% tension vs 23 +/- 4% tension). The analogue of vitamin E, U-84836E, administered at onset of reperfusion, lowered serum TNF-alpha (38.4 +/- 6.5 U/ml; p < 0.001), improved MAP (67.5 +/- 3.8 mmHg; p < 0.001), WBC count (8.9 +/- 0.6 x 10(3)/mm3; p < 0.001), and survival time (235 +/- 15 min; p < 0.001), and restored the responsiveness to ACh of aortic rings (32 +/- 3.7% tension; p < 0.001). These preliminary data suggest that this new compound could be a promising drug in shock therapy.
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July 1989,
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Eicosanoids,
