Abstract:
:The extrinsic pathway is probably the predominant pathway in initiating blood coagulation in inflammatory lung diseases. Tissue factor pathway inhibitor (TFPI) is a Kunitz-type protease inhibitor of factor VIIa/tissue factor in the presence of factor Xa. As it has been shown recently that TFPI plasma levels are increased under acute inflammatory conditions, we studied TFPI antigen plasma levels before and after injecting 20 IU/kg body weight of unfractionated heparin into 49 patients with different stages of sarcoidosis, into 9 with idiopathic pulmonary fibrosis, and into 15 normal controls. TFPI, before injecting heparin, was significantly increased in all sarcoidosis stages (stage I: 97.6 +/- 6.4 ng/mL; stage II: 116.2 +/- 11.9 ng/mL; stage III: 116.3 +/- 7.3 ng/mL) and in idiopathic pulmonary fibrosis (116.8 +/- 16.1 ng/mL), as compared to the control group (77.7 +/- 3.3 ng/mL). No correlation was found between the intensity of the activity of sarcoidosis, measured as BAL white cell count, and TFPI. Five minutes after heparin administration the rise in TFPI was lower, although not statistically significant, in all sarcoidosis stages than in controls. In contrast, idiopathic pulmonary fibrosis had a similar or even higher TFPI elevation than the control group. In sarcoidosis the elevated TFPI and the lower capacity by endothelial cells to release TFPI after heparin may represent a compensatory mechanism to prevent blood clotting and/or the endothelial cell dysfunction of the microvasculature in this condition. In contrast, the extensive mesenchymal cell proliferation present in idiopathic pulmonary fibrosis could explain our findings, as it has been shown that cultured human mesangial cells produce and release TFPI.
journal_name
Semin Thromb Hemostjournal_title
Seminars in thrombosis and hemostasisauthors
Cella G,Cipriani A,Tommasini A,Rampin E,Sbarai A,Rocconi R,Mazzaro G,Luzzatto Gdoi
10.1055/s-2007-996069subject
Has Abstractpub_date
1997-01-01 00:00:00pages
45-9issue
1eissn
0094-6176issn
1098-9064journal_volume
23pub_type
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0037-1598062
更新日期:2017-06-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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更新日期:2003-10-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2007-996102
更新日期:1997-01-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0032-1321491
更新日期:2012-09-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
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更新日期:2014-06-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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更新日期:2005-12-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2007-994002
更新日期:1993-01-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-996433
更新日期:1999-01-01 00:00:00
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doi:10.1055/s-0030-1251499
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1002793
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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journal_title:Seminars in thrombosis and hemostasis
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0035-1564045
更新日期:2015-10-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0030-1265296
更新日期:2010-10-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-1001902
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-1004428
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0030-1270065
更新日期:2011-02-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2004-835678
更新日期:2004-10-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2004-833474
更新日期:2004-08-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-1000393
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abstract::Coagulation factor XII (FXII), formerly known as Hageman factor, is a plasma glycoprotein which exerts a kaleidoscope of biological functions, including the initiation of the intrinsic pathway of blood coagulation, the activation of the kallikrein-kinin system, and the generation of bradykinin and angiotensin. The lar...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0036-1571338
更新日期:2016-09-01 00:00:00
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journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
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更新日期:2016-03-01 00:00:00