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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Urokinase-type plasminogen activator receptor regulates leukocyte recruitment during experimental pneumococcal meningitis.

Tissue-type plasminogen activator (tPA) and urokinase-type plasminogen activator (uPA) have been suggested to play an important role in inflammatory diseases. Increased levels of tPA, uPA, uPA receptor (uPAR), and their inhibitor, plasminogen activator inhibitor (PAI)-1, have been found in the cerebrospinal fluid (CSF) of patients with bacterial meningitis. Here, we show that expression of tPA, uPA, uPAR, PAI-1, and PAI-2 is up-regulated during experimental pneumococcal meningitis. In uPAR-deficient mice, CSF pleocytosis was significantly attenuated 24 h after infection, compared with that in infected wild-type (wt) mice. Lack of uPAR did not influence blood-brain barrier permeability, intracranial pressure, expression of chemokines (keratinocyte-derived cytokine and macrophage inflammatory protein-2), bacterial killing, or clinical outcome. No differences in pathophysiological alterations were observed in tPA-deficient mice, compared with those in infected wt mice. These results indicate that uPAR participates in the recruitment of leukocytes to the CSF space during pneumoccal meningitis.[1]

References

  1. Urokinase-type plasminogen activator receptor regulates leukocyte recruitment during experimental pneumococcal meningitis. Paul, R., Winkler, F., Bayerlein, I., Popp, B., Pfister, H.W., Koedel, U. J. Infect. Dis. (2005) [Pubmed]
 
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