Abstract
The administration of silica prevents coumarin-stimulated lysis of accumulated abnormal protein. This impairs the resolution of thermal oedema which is normally increased with coumarin administration. Evidence suggests that there is a rapid differentiation and infiltration of monocytes into the tissues and that these are selectively retained. This is aided by coumarin which increases tissue permeability. Coumarin also injures the vascular endothelium of some vessels, allowing extra protein and fluid into the tissues. Death of recently differentiated macrophages and subsequent release of their lysosomal contents into the extra-cellular spaces may be responsible for the changes in serum enzyme levels. It would seem that macrophages are the only cells in which coumarin stimulates increased phagocytosis, enzyme production and proteolysis.
Full text
PDF








Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Allison A. C., Harington J. S., Birbeck M. An examination of the cytotoxic effects of silica on macrophages. J Exp Med. 1966 Aug 1;124(2):141–154. doi: 10.1084/jem.124.2.141. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Casley-Smith J. R., Földi-Börcsök E., Földi M. The electron microscopy of the effects of treatment with coumarin (Venalot) and by thoracic duct cannulation on thermal injuries. Br J Exp Pathol. 1973 Feb;54(1):1–5. [PMC free article] [PubMed] [Google Scholar]
- Courtice F. C. The effect of local temperature on fluid loss in thermal burns. J Physiol. 1946 Jan 15;104(3):321–345. doi: 10.1113/jphysiol.1946.sp004125. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Davis J. M. The effects of polyvinyl pyridine-N-oxide (P204) on the cytopathogenic action of chrysotile asbestos in vivo and in vitro. Br J Exp Pathol. 1972 Dec;53(6):652–658. [PMC free article] [PubMed] [Google Scholar]
- Földi-Börcsök E. Effect of external lymph drainage and of coumarin treatment on thermal injury in the rat hind leg. Br J Pharmacol. 1972 Oct;46(2):254–259. doi: 10.1111/j.1476-5381.1972.tb06870.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Földi-Börcsök E., Földi M. Lymphedema and vitamins. Am J Clin Nutr. 1973 Feb;26(2):185–190. doi: 10.1093/ajcn/26.2.185. [DOI] [PubMed] [Google Scholar]
- HARRIS H. Role of chemotaxis in inflammation. Physiol Rev. 1954 Jul;34(3):529–562. doi: 10.1152/physrev.1954.34.3.529. [DOI] [PubMed] [Google Scholar]
- HIGGINBOTHAM R. D., DOUGHERTY T. F., JEE W. S. Fate of shed mast cell granules. Proc Soc Exp Biol Med. 1956 Jun;92(2):256–261. doi: 10.3181/00379727-92-22445. [DOI] [PubMed] [Google Scholar]
- Houck J. C., Sharma V. K. Induction of collagenolytic and proteolytic activities in rat and human fibroblasts by anti-inflammatory drugs. Science. 1968 Sep 27;161(3848):1361–1362. doi: 10.1126/science.161.3848.1361. [DOI] [PubMed] [Google Scholar]
- KESSEL R. W., MONACO L., MARCHISIO M. A. THE SPECIFICITY OF THE CYTOTOXIC ACTION OF SILICA--A STUDY IN VITRO. Br J Exp Pathol. 1963 Aug;44:351–364. [PMC free article] [PubMed] [Google Scholar]
- KING T. C., ZIMMERMAN J. M. FIRST-AID COOLING OF THE FRESH BURN. Surg Gynecol Obstet. 1965 Jun;120:1271–1273. [PubMed] [Google Scholar]
- Nadler S., Goldfischer S. The intracellular release of lysosomal contents in macrophages that have ingested silica. J Histochem Cytochem. 1970 May;18(5):368–371. doi: 10.1177/18.5.368. [DOI] [PubMed] [Google Scholar]
- Nash T., Allison A. C., Harington J. S. Physico-chemical properties of silica in relation to its toxicity. Nature. 1966 Apr 16;210(5033):259–261. doi: 10.1038/210259a0. [DOI] [PubMed] [Google Scholar]
- O-Ishi S., Sakuma A. A model for rat paw edema. I. Fitness of the model to some types of edema. Jpn J Pharmacol. 1970 Sep;20(3):337–348. doi: 10.1254/jjp.20.337. [DOI] [PubMed] [Google Scholar]
- O-Ishi S., Sakuma A. A model for rat paw edema. II. Analyses on the effect of the antagonists. Jpn J Pharmacol. 1970 Sep;20(3):349–359. doi: 10.1254/jjp.20.349. [DOI] [PubMed] [Google Scholar]
- PAZ R. A., SPECTOR W. G. The mononuclear-cell response to injury. J Pathol Bacteriol. 1962 Jul;84:85–103. doi: 10.1002/path.1700840111. [DOI] [PubMed] [Google Scholar]
- Piller N. B., Casley-Smith J. R. The effect of coumarin on protein and PVP clearance from rat legs with various high protein oedemas. Br J Exp Pathol. 1975 Oct;56(5):439–443. [PMC free article] [PubMed] [Google Scholar]
- Piller N. B. The resolution of thermal oedema at various temperatures under coumarin treatment. Br J Exp Pathol. 1975 Feb;56(1):83–91. [PMC free article] [PubMed] [Google Scholar]
- Rose S. S. A report on the use of an hydroxyethylrutoside in symptoms due to venous back pressure and allied conditions in the lower limbs. Br J Clin Pract. 1970 Apr;24(4):161–164. [PubMed] [Google Scholar]
- Spector W. G., Lykke A. W., Willoughby D. A. A quantitative study of leucocyte emigration in chronic inflammatory granulomata. J Pathol Bacteriol. 1967 Jan;93(1):101–107. doi: 10.1002/path.1700930109. [DOI] [PubMed] [Google Scholar]
- VIGLIANI E. C., PERNIS B. Immunological aspects of silicosis. Bibl Tuberc. 1963;17:230–279. [PubMed] [Google Scholar]
- Van Caneghem P. Influence of some hydrosoluble substances with vitamin P activity on the fragility of lysosomes in vitro. Biochem Pharmacol. 1972 Jun 1;21(11):1543–1548. doi: 10.1016/0006-2952(72)90303-6. [DOI] [PubMed] [Google Scholar]
- Wasi S., Uriuhara T., Taichman N. S., Murray R. K., Movat H. Z. Proteolytic activity in the serum of rabbits during anaphylaxis. Experientia. 1966 Mar 15;22(3):196–198. doi: 10.1007/BF01897735. [DOI] [PubMed] [Google Scholar]