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Study progress on mechanism of severe acute pancreatitis complicated with hepatic injury 总被引：4，自引：0，他引：4
Study on the action mechanism of inflammatory mediators generated by the severe acute pancreatitis(SAP) in mul-tiple organ injury is a hotspot in the surgical field.In clinical practice,the main complicated organ dysfunctions are shock,res-piratory failure,renal failure,encephalopathy,with the rate of hepatic diseases being closely next to them.The hepatic injury caused by SAP cannot only aggravate the state of pancreatitis,but also develop into hepatic failure and cause patient death.Its complicated pathogenic mechanism is an obstacle in clinical treatment.Among many pathogenic factors,the changes of vasoac-tive substances,participation of inflammatory mediators as well as OFR(oxygen free radical),endotoxin,etc.may play important roles in its progression. 相似文献
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Xing HC Li LJ Xu KJ Shen T Chen YB Sheng JF Yu YS Chen YG 《Journal of Zhejiang University. Science. B》2005,6(1):14-21
Objectives:To investigate the intestinal microflora status related to ischemia/reperfusion(I/R)liver injury and explorethe possible mechanism.Methods:Specific pathogen free grade Sprague-Dawley rats were randomized into three groups:Controlgroup(n=8),sham group(n=6)and I/R group(n=10).Rats in the control group did not receive any treatment,rats in the I/R groupwere subjected to 20 min of liver ischemia,and rats in the sham group were only subjected to sham operation.Twenty-two hourslater,the rats were sacrificed and liver enzymes and malondialdehyde(MDA),superoxide dismutase(SOD),serum endotoxin,intestinal bacterial counts,intestinal mucosal histology,bacterial translocation to mesenteric lymph nodes,liver,spleen,andkidney were studied.Results:Ischemia/reperfusion increased liver enzymes,MDA,decreased SOD,and was associated withplasma endotoxin elevation in the I/R group campared to those in the sham group.Intestinal Bifidobacteria and Lactobacillidecreased and intestinal Enterobacterium and Enterococcus 相似文献
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Gao JP Huang M Li N Wang PF Chen HL Xu QP 《Journal of Zhejiang University. Science. B》2011,12(4):264-272
A novel adsorber, polyvinylidene fluoride matrix immobilized with L-serine ligand (PVDF-Ser), was developed in the present
study to evaluate its safety and therapeutic efficacy in septic pigs by extracorporeal hemoperfusion. Endotoxin adsorption
efficiency (EAE) of the adsorber was firstly measured in vitro. The biocompatibility and hemodynamic changes during extracorporeal
circulation were then evaluated. One half of 16 pigs receiving lipopolysaccharide (Escherichia coli O111:B4, 5 μg/kg) intravenously in 1 h were consecutively treated by hemoperfusion with the new adsorber for 2 h. The changes
of circulating endotoxin and certain cytokines and respiratory function were analyzed. The 72 h-survival rate was assessed
eventually. EAE reached 46.3% (100 EU/ml in 80 ml calf serum) after 2 h- circulation. No deleterious effect was observed within
the process. The plasma endotoxin, interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) levels were decreased during
the hemoperfusion. Arterial oxygenation was also improved during and after the process. Furthermore, the survival time was
significantly extended (>72 h vs. 47.5 h for median survival time). The novel product PVDF-Ser could adsorb endotoxin with
high safety and efficacy. Early use of extracorporeal hemoperfusion with the new adsorber could reduce the levels of circulating
endotoxin, IL-6, and TNF-α, besides improve respiratory function and consequent 72 h-survival rate of the septic pigs. Endotoxin
removal strategy with blood purification using the new adsorber renders a potential promising future in sepsis therapy. 相似文献
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Pathogens, especially Gram-negative bacteria or bacterial endotoxin, along with other classical factors, may be involved in
inflammatory response within the aortic endothelium during the progression of cardiovascular disease. Studies have shown that
bacterial endotoxin activates various inflammatory processes in the body. Our study aims to establish a correlation between
endotoxemia and vascular expression of antioxidant enzymes. Swiss albino mice (4 weeks old) were fed a high fat diet for 24
weeks and then were administered Escherichia coli endotoxin intraperitonealy, for 4 weeks. Tissue antioxidant enzymes, serum
levels of IL-6 and TNF alpha were measured from the mice. We report that i.p. administration of endotoxin to hyperlipidemic
mice resulted in elevation of superoxide dismutase and catalase enzymes, which was paralleled by a systemic reduction of serum
cholesterol and LDL expression. Myeloperoxidase levels were also found to be elevated in aortic tissue, while an increase
was also observed in the serum cytokine levels. 相似文献
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Study on the action mechanism of inflammatory mediators generated by the severe acute pancreatitis (SAP) in multiple organ injury is a hotspot in the surgical field. In clinical practice, the main complicated organ dysfunctions are shock, respiratory failure, renal failure, encephalopathy, with the rate of hepatic diseases being closely next to them. The hepatic injury caused by SAP cannot only aggravate the state of pancreatitis, but also develop into hepatic failure and cause patient death. Its complicated pathogenic mechanism is an obstacle in clinical treatment. Among many pathogenic factors, the changes ofvasoactive substances, participation of inflammatory mediators as well as OFR (oxygen free radical), endotoxin, etc. may play important roles in its progression. 相似文献
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