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Bacterial Proteases and Haemostasis Dysregulation in the CF Lung

Reihill, J.A., Moreland, M., Jarvis, G.E., McDowell, A., Einarsson, G.G., Elborn, J.S. and Martin, S.L. (2016) Bacterial Proteases and Haemostasis Dysregulation in the CF Lung. Journal of Cystic Fibrosis, 16 . pp. 49-57. [Journal article]

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URL: http://www.sciencedirect.com/science/article/pii/S156919931630618X

DOI: 10.1016/j.jcf.2016.10.006


Background: Pathogenic bacteria which chronically colonise the cystic fibrosis (CF) lung produce a number of virulence determinants, including distinct proteolytic activities. The potential role bacterial proteases play on haemostatic dysregulation within the CF lung is, however, poorly defined, despite haemoptysis being a common complication in CF. Methods: The potential impact of known CF pathogens (Pseudomonas aeruginosa and Burkholderia cepacia complex spp.) on haemostasis was examined for their ability to degrade fibrinogen and dysregulate fibrin clot formation and platelet aggregation.Results: Results demonstrate that key CF pathogens growing as a biofilm on mucin exhibit considerable fibrinogenolytic activity, resulting in fibrinogen breakdown, impaired clot formation, and modulation of platelet aggregation. Human neutrophil elastase may also contribute to fibrinogen breakdown and dysregulated clot formation at high concentration.Conclusion: Bacterial-derived proteases may play an important role in the dysregulation of airway haemostasis, and potentially contribute to episodes of haemoptysis within the CF lung.

Item Type:Journal article
Keywords:Cystic fibrosis, Haemostasis, Haemoptysis, Coagulation, Platelet aggregation, Pseudomonas aeruginosa, Burkholderia cenocepacia, Burkholderia multivorans
Faculties and Schools:Faculty of Life and Health Sciences > School of Biomedical Sciences
Faculty of Life and Health Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Stratified Medicine
ID Code:36327
Deposited By: Dr Andrew McDowell
Deposited On:28 Nov 2016 13:49
Last Modified:10 Nov 2017 23:23

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