PMID- 9950822 OWN - NLM STAT- MEDLINE DCOM- 19990330 LR - 20190212 IS - 0002-9513 (Print) IS - 0002-9513 (Linking) VI - 276 IP - 2 DP - 1999 Feb TI - Role of endotoxin in intestinal reperfusion-induced expression of E-selectin. PG - G479-84 LID - 10.1152/ajpgi.1999.276.2.G479 [doi] AB - Products of enteric bacteria, including endotoxin [lipopolysaccharide (LPS)], have been implicated in the acute inflammatory responses elicited by ischemia and reperfusion (I/R) of the small intestine. The objective of this study was to assess the contribution of LPS to the increased E-selectin expression observed in the intestinal vasculature after I/R. The dual radiolabeled monoclonal antibody technique was used in LPS-sensitive (C3HeB/FeJ) and LPS-insensitive (C3H/HeJ) mice that were exposed to either exogenous LPS or to gut I/R (45 min ischemia, 5 h reperfusion). LPS elicited a dose-dependent (0.5-50 microgram LPS/animal) increase in E-selectin expression (at 3 h) in LPS-sensitive mice, whereas LPS-insensitive mice were largely unresponsive. E-selectin expression was increased fivefold by I/R in the small bowel of both LPS-sensitive and -insensitive mice. These results indicate that, although exogenous LPS is capable of eliciting profound dose-dependent increases in E-selectin expression, endogenous LPS does not contribute significantly to I/R-induced expression of this endothelial cell adhesion molecule. FAU - Bauer, P AU - Bauer P AD - Department of Molecular and Cellular Physiology, Louisiana State University Medical Center, Shreveport, Louisiana 71130-3932, USA. FAU - Russell, J M AU - Russell JM FAU - Granger, D N AU - Granger DN LA - eng GR - P01-DK-43785/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Physiol JT - The American journal of physiology JID - 0370511 RN - 0 (E-Selectin) RN - 0 (Endotoxins) RN - 0 (Lipopolysaccharides) SB - IM MH - Animals MH - Dose-Response Relationship, Drug MH - Drug Resistance/genetics MH - E-Selectin/*physiology MH - Endotoxins/blood/*physiology MH - Intestines/*blood supply MH - Ischemia/metabolism MH - Lipopolysaccharides/pharmacology MH - Male MH - Mice MH - Mice, Inbred C3H/genetics MH - Reperfusion Injury/*metabolism EDAT- 1999/02/10 00:00 MHDA- 1999/02/10 00:01 CRDT- 1999/02/10 00:00 PHST- 1999/02/10 00:00 [pubmed] PHST- 1999/02/10 00:01 [medline] PHST- 1999/02/10 00:00 [entrez] AID - 10.1152/ajpgi.1999.276.2.G479 [doi] PST - ppublish SO - Am J Physiol. 1999 Feb;276(2):G479-84. doi: 10.1152/ajpgi.1999.276.2.G479.