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Enhanced Release of Plasminogen Activator Inhibitor(S) but Not of Plasminogen Activators by Cultured Rat Glial Cells Treated with Interleukin-1
Rogister, Bernard; Leprince, Pierre; Delree, P. et al.
1990In Glia, 3 (4), p. 252-7
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Abstract :
[en] Astroglial cells are known to proliferate during development of the nervous system, as well as during post-traumatic gliosis. We have previously shown that the proliferation of cultured astrocytes can be stimulated by the urokinase-type (uPA) of plasminogen activator (PA) and that astrocytes are able to release such uPA upon stimulation with basic fibroblast growth factor, which is known to act as a mitogen for these cells. Here we report studies on the effects of human interleukin-1 (IL-1) on the release of PA activity by cultured newborn rat astroglial cells. Whereas there is controversy in the literature as to whether IL-1 stimulates multiplication of astroglial cells, we failed to observe such an effect in our system. We did observe, however, a dose-dependent decrease in PA activity in the supernatant of the IL-1 treated cultures. Further analysis revealed that this apparent decrease in PA release was in fact due to an increased release of plasminogen activator inhibitor (PAI). A similar IL-1 induced increase in PAI release was also found to occur in cultures of transformed astrocytes (human glioma LN18) and in cultured Schwann cells, but not in cultures of neurons or neuronal tumour cells. Since protease inhibitors are known to possess neuritogenic properties, our results suggest that IL-1, by its capacity to induce PAI, may promote neuritogenesis.
Disciplines :
Biochemistry, biophysics & molecular biology
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Rogister, Bernard  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Leprince, Pierre ;  Université de Liège - ULiège > CNCM/ Centre fac. de rech. en neurobiologie cell. et moléc.
Delree, P.
Van Damme, J.
Billiau, A.
Moonen, Gustave  ;  Université de Liège - ULiège > Département des sciences cliniques > Neurologie - Doyen de la Faculté de Médecine
Language :
English
Title :
Enhanced Release of Plasminogen Activator Inhibitor(S) but Not of Plasminogen Activators by Cultured Rat Glial Cells Treated with Interleukin-1
Publication date :
1990
Journal title :
Glia
ISSN :
0894-1491
eISSN :
1098-1136
Publisher :
John Wiley & Sons, Hoboken, United States - New York
Volume :
3
Issue :
4
Pages :
252-7
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 14 May 2010

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