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Titolo:
TNF BUT NOT IL-1 DECREASES PANCREATIC ACINAR CELL-SURVIVAL WITHOUT AFFECTING EXOCRINE FUNCTION - A STUDY IN THE PERFUSED HUMAN PANCREAS
Autore:
DENHAM W; YANG J; FINK G; DENHAM D; CARTER G; BOWERS V; NORMAN J;
Indirizzi:
UNIV S FLORIDA,TAMPA GEN HOSP,DEPT SURG,BOX 1289 TAMPA FL 33601 UNIV S FLORIDA,DEPT SURG TAMPA FL 33612 UNIV S FLORIDA,PANCREAS STUDY GRP TAMPA FL 33612
Titolo Testata:
The Journal of surgical research
fascicolo: 1, volume: 74, anno: 1998,
pagine: 3 - 7
SICI:
0022-4804(1998)74:1<3:TBNIDP>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
TUMOR-NECROSIS-FACTOR; INTERLEUKIN-1; MEDIATORS; SEVERITY; RAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
W. Denham et al., "TNF BUT NOT IL-1 DECREASES PANCREATIC ACINAR CELL-SURVIVAL WITHOUT AFFECTING EXOCRINE FUNCTION - A STUDY IN THE PERFUSED HUMAN PANCREAS", The Journal of surgical research, 74(1), 1998, pp. 3-7

Abstract

Substantial quantities of interleukin-1 beta (IL-1 beta) and tumor necrosis factor-alpha (TNF-alpha) are produced within the pancreatic parenchyma during acute pancreatitis. Recent evidence suggests that IL-1 beta and TNF-alpha propagate acute pancreatitis and intensify the resulting pancreatic acinar cell death, This study examines the direct effect of IL-1 beta and TNF-alpha on pancreatic acinar cells. Human pancreata (n = 6), harvested during organ procurement, were perfused ex vivo through the splenic artery using a sterile, oxygenated colloid solution. Each pancreas was perfused with either recombinant human IL-1 beta or TNF-alpha for 2 h and subsequently with the cholecystokinin analogue caerulein (positive control). Venous effluent was collected continuously and amylase and lipase were determined at 15-min intervals. Pancreatic histology was graded at baseline and following cytokine and caerulein perfusion. To examine the longterm effects of these cytokines on acinar cell viability, additional in vitro studies utilized the AR42J acinar cell line which was exposed to either IL-1 beta or TNF-alphawith survival determined daily by MTT assay. Perfusion of the human pancreas with either IL-1 beta or TNF-alpha did not alter amylase, lipase, or histology, Caerulein did induce pancreatitis as measured by increased amylase, lipase, and pancreatic histology, Survival of pancreatic acinar cells decreased when they were incubated with TNF-alpha but not IL-1 beta. Although present in large amounts within the pancreas during acute pancreatitis, IL-1 beta and TNF-alpha have no direct effect on acinar cell viability or exocrine function acutely nor do they induce pancreatitis. When present for more than 24 h, however, TNF-alphabut not IL-1 beta has a dramatic effect on acinar cell survival. (C) 1998 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 04:40:49