Protective roles of hydroxyethyl starch 130/0.4 in intestinal inflammatory response and oxidative stress after hemorrhagic shock and resuscitation in rats.
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| Abstract |
This study was designed to determine the effects of various resuscitation fluids on intestinal injuries after hemorrhagic shock and resuscitation (HS/R) and to determine the potential mechanisms. We induced HS by bleeding male Sprague-Dawley rats to a blood pressure of 30 to 40 mmHg for 60 min. Sixty minutes later, the rats were killed (HS group) or immediately resuscitated with L-isomer lactated Ringer's solution (HS + LR group), shed blood (HS + BL group), or hydroxyethyl starch (HS + HES group) to maintain the blood pressure to the original value during the 60-min resuscitation period. Three hour after resuscitation, bacterial translocation (BT), intestinal permeability, ileal levels of tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, malondialdehyde (MDA), oxidized and reduced glutathione (GSH and GSSG), myeloperoxidase (MPO) activity, nuclear factor (NF)-kappaB, activator protein (AP)-1 activation, and ileal microscopic and ultrastructural histological changes were measured. Another experiment was designed for survival study of 24 h. HES 130/0.4 solution was as effective as shed blood, required a small volume requirement to restore circulation, and significantly reduced HS/R-induced ileal villous morphological injuries with an anti-inflammatory effect, as reflected by a reduction of TNF-alpha, IL-6, MPO activity, and NF-kappaB activation. In addition, HES resuscitation also reduced intestinal permeability and BT and caused less oxidative stress as reflected by a reduction of MDA, GSSG/GSH and AP-1 activation along with restored GSH, whereas shed blood couldn't. No significant difference was observed in outcome among groups. HES 130/0.4 resuscitation prevents HS/R induced intestinal injury by modulating inflammatory response and preventing oxidative stress in a rat model of hemorrhagic shock. These physiological protective effects appear to be mediated by down-regulation of the transcription factor NF-kappaB and AP-1.
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| Authors | Pengfei Wang, Yousheng Li, Jieshou Li |
| Journal | Inflammation (Inflammation) Vol. 32 Issue 2 Pg. 71-82 (Apr 2009) ISSN: 1573-2576 [Electronic] United States |
| PMID | 19238531 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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