RGD Reference Report - Changes in the concentration and distribution of tissue factor pathway inhibitor in Behcet's disease and systemic lupus erythematosus: effect on the prethrombotic state.

General

Changes in the concentration and distribution of tissue factor pathway inhibitor in Behcet's disease and systemic lupus erythematosus: effect on the prethrombotic state.
Authors:	Ertenli, I Kiraz, S Celik, IC Haznedaroglu, C Erman, M Calguneri, M Kirazli, S
Citation:	Ertenli I, etal., Ann Rheum Dis. 2001 Dec;60(12):1149-51.
RGD ID:	11060258
Pubmed:	PMID:11709459 (View Abstract at PubMed)
PMCID:	PMC1753435 (View Article at PubMed Central)
BACKGROUND: Tissue factor pathway inhibitor (TFPI) is an anticoagulant which modulates the tissue factor (TF) dependent pathway, acting on the factor VIIa/TF complex, factor Xa, and thrombin. Although most TFPI is found in association with plasma lipoproteins and platelets, the functional pool is bound to vascular endothelium and is released into the circulation on stimulation with heparin or low molecular weight heparin (LMWH). OBJECTIVE: To assess the vascular endothelial TFPI pool in patients with Behcet's disease (BD) or systemic lupus erythematosus (SLE). METHODS: Plasma TFPI concentrations were determined before, and 20 and 60 minutes after subcutaneous LMWH injection in 15 newly diagnosed patients with BD and 12 with SLE, and in 12 healthy controls. RESULTS: Baseline median TFPI was 149.5 ng/ml in healthy subjects, and the percentage change in TFPI at 20 minutes (((value at 20th min - baseline value)/baseline value) x 100) was 575.2. TFPI concentrations in patients with BD were initially normal at baseline (136.0 ng/ml), but the percentage change (44.7) was significantly lower than in the patients with SLE and the controls. Baseline TFPI concentrations in patients with SLE (83.0 ng/ml) were lower than in the control group, but the TFPI response to stimulation with LMWH reached a level (626.4%) comparable to that of the controls. CONCLUSION: Depletion of the functional endothelial pool in BD and low circulating concentrations of TFPI despite an intact pool in SLE may be important in the pathogenesis of thrombosis in these vasculitic syndromes.

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Term	Qualifier	Evidence	With	Reference	Notes	Source	Original Reference(s)
systemic lupus erythematosus		IEP		11060258	protein:decreased expression:plasma:	RGD
systemic lupus erythematosus		ISO	TFPI (Homo sapiens)	11060258; 11060258	protein:decreased expression:plasma:	RGD

Objects Annotated

Genes (Rattus norvegicus)

Tfpi (tissue factor pathway inhibitor)

Genes (Mus musculus)

Tfpi (tissue factor pathway inhibitor)

Genes (Homo sapiens)

TFPI (tissue factor pathway inhibitor)

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Changes in the concentration and distribution of tissue factor pathway inhibitor in Behcet's disease and systemic lupus erythematosus: effect on the prethrombotic state.