کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9256144 1590365 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The isolated perfused liver response to a ‚second hit' of portal endotoxin during severe acute pancreatitis
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری‌های گوارشی
پیش نمایش صفحه اول مقاله
The isolated perfused liver response to a ‚second hit' of portal endotoxin during severe acute pancreatitis
چکیده انگلیسی
Background/Aim: During severe acute pancreatitis (AP), the liver may show an exaggerated response to the inflammatory products of gut injury transported in the portal vein. Our aim was to explore liver proinflammatory mediator production after a ‚second hit' of portal lipopolysaccharide (LPS) during AP. Methods: Twenty-four rats underwent one of three ‚first-hit' scenarios: (1) severe AP induced by intraductal glycodeoxycholic acid injection and intravenous caerulein infusion, (2) sham laparotomy, or (3) no first intervention. Eighteen hours later, all animals received a ‚second hit' of portal LPS in an isolated liver perfusion system. Tumour necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6 concentrations were measured in portal and systemic serum, and in the perfusate 30 and 90 min after the ‚second hit'. Neutrophil activation by the perfusate was assayed using dihydrorhodamine-123 fluorescence. Results: We observed a six-fold increase in IL-6 concentration across the liver during AP. All livers produced TNF-a after the portal LPS challenge, but this was not exaggerated by AP. No differential neutrophil activation by the perfusate was seen. Conclusion: TNF-α, IL-1β, IL-6 and neutrophil activator production by the isolated perfused liver, in response to a ‚second hit' of portal LPS, does not appear to be enhanced during AP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pancreatology - Volume 5, Issues 4–5, 2005, Pages 475-485
نویسندگان
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