The histology of experimental pleural injury with tetracycline, empyema, and carrageenan.

Experimental and Molecular Pathology
C StrangeS A Sahn

Abstract

Models of pleural injury were established with intrapleural tetracycline, intrapleural carrageenan, and empyema in New Zealand White rabbits to evaluate histologically the pleural inflammatory response from 3 to 90 days. Both tetracycline and empyema models produced increases in the pleural connective tissue layers both above and below the fibroelastic membrane associated with angiogenesis and lymphangiogenesis. The influx of fibroblasts from the pleural surface into acellular fibrin strands formed adhesions between the visceral and the parietal pleurae. Injury to the mesothelial cell ranged from a cuboidal transition to total desquamation with the degree of mesothelial injury associated with the amount of fibrin adherence and the propensity toward fibrosis at 90 days. Intervention to promote the resolution of pleural inflammation without fibrosis should be directed toward preservation of the mesothelial surface, removal of pleural fibrin, and inhibition of fibroblast growth and chemotaxis.

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Citations

Dec 31, 2004·Lymphatic Research and Biology·Carla Mouta, Mélanie Heroult
Sep 1, 1993·Thorax·C W ChamJ Rahamim
Apr 1, 1993·The American Review of Respiratory Disease·C StrangeS A Sahn
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