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  • Title: Lung injury in acute experimental pancreatitis in rats. I. Morphological studies.
    Author: Willemer S, Feddersen CO, Karges W, Adler G.
    Journal: Int J Pancreatol; 1991 May; 8(4):305-21. PubMed ID: 1791317.
    Abstract:
    The pathogenesis of pancreatitis-related pulmonary injury was studied at the light- and electronmicroscopic level. Experimental pancreatitis was induced in rats by infusion of supramaximal doses of cerulein for 12 h. Investigations were carried out 3, 6, and 12 h after the start of infusion and 12, 48, and 72 h after the end of pancreatitis induction. Initial manifestations of pancreatitis-associated lung injury revealed a pronounced clustering of polymorphonuclear leukocytes in pulmonary microvessels, followed by severe damage of alveolar endothelial cells. Consecutively, the increase in vascular permeability of the lung resulted in interstitial edema formation. Structural changes were maximal after 12 h and reversed completely after 84 h. In conclusion, the structural appearance of pulmonary injury in cerulein-induced pancreatitis was similar to that reported in early stages of the adult respiratory distress syndrome (ARDS). It is suggested that polymorphonuclear granulocytes play a crucial role in the pathogenesis of pancreatitis-related lung injury.
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