Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Furthermore, recombinant ADAMTS13-mediated degradation of VWF multimers was entirely inhibited in the presence of plasma from a patient with acquired TTP.
|
12393399 |
2002 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
There is also an enduring uncertainty about the specificity of ADAMTS13 deficiency for the diagnosis of acquired TTP and a perception that the result does not alter patient management.
|
12656756 |
2003 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
Severe deficiency of von Willebrand factor (VWF)-cleaving protease (ADAMTS-13) activity (<5% of normal) is a specific finding for acute idiopathic thrombotic thrombocytopenic purpura (TTP), a disorder that presents as thrombocytopenia, microangiopathic hemolytic anemia, and often organ dysfunction such as neurological disturbances or renal failure, and fever.
|
14727262 |
2004 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
In vitro expression and characterization of recombinant ADAMTS-13 (rADAMTS-13) clearly established that ADAMTS-13 is deficient in congenital TTP and inhibited in acquired TTP.
|
14727256 |
2004 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Autoantibodies that inactivate ADAMTS13 are the most frequent cause of acquired TTP.
|
14976043 |
2004 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
We report identical twin sisters suffering from acquired TTP due to immunoglobulin G (IgG) autoantibodies inactivating ADAMTS13, suggesting an important role of hitherto unidentified genetic determinants of ADAMTS13 inhibitor formation.
|
14982879 |
2004 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
Mutations in the ADAMTS13 gene cause inherited TTP, and the development of autoantibodies that inhibit ADAMTS13 activity frequently are associated with acquired TTP.
|
15662617 |
2005 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Acquired TTP is often but not always associated with severe, autoantibody-mediated ADAMTS-13 deficiency.
|
16102032 |
2005 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Plasma of six patients with acquired TTP competed for binding of scFv I-9 to ADAMTS13.
|
16898953 |
2006 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Unlike acquired thrombotic thrombocytopenic purpura or haemolytic uraemic syndrome, which are often intractable, thrombotic microangiopathy in patients with Upshaw-Schulman syndrome (USS)--a congenital deficiency of von Willebrand factor-cleaving protease (ADAMTS13) activity--responds very well to plasma infusion and does not even require plasma exchange.
|
16449289 |
2006 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
We applied the Impact-R system [Cone and plate(let) Analyzer, CPA] to determine optimal conditions for ADAMTS-13 function, to assess it's activity in TTP patients and to distinguish inherited TTP (inTTP) from acquired TTP (acTTP).
|
16894459 |
2006 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
ADAMTS13 was not detected in the plasma from patients with congenital TTP (n = 5) by either antibody, whereas patients with acquired TTP (n = 2) presented the normal phenotype.
|
17187257 |
2007 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
These results suggest that VH1-69 derived antibodies directed towards ADAMTS13 develop in the majority of patients with acquired TTP.
|
19054323 |
2009 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Congenital TTP occurs due to ADAMTS13 mutations, with the usual debut occurring during the first years of life, while acquired TTP is associated with auto-antibodies against ADAMTS13.
|
18807073 |
2009 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
We now show that replacement of R660, Y661, or Y665 with alanine in ADAMTS13 reduced/abolished the binding of 2 previously isolated human monoclonal antibodies and polyclonal antibodies derived from plasma of 6 patients with acquired TTP.
|
20032502 |
2010 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Deficiency of ADAMTS13, due to autoimmune inhibitors in patients with acquired TTP and mutations of the ADAMTS13 gene in hereditary cases, leads to VWF-platelet aggregation and microvascular thrombosis of TTP.
|
20058209 |
2010 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Finally, a model is presented for the development of anti-ADAMTS13 antibodies in previously healthy individuals that incorporates the recent identification of HLA DRB1*11 as a risk factor for acquired TTP.
|
21535387 |
2011 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
ADAMTS13 (a disintegrin-like and metalloprotease with thrombospondin type-1 motifs 13) has been shown to be of major pathophysiological importance for thrombotic microangiopathy (TMA) in the setting of thrombocytic thrombocytopenic purpura (TTP) when either lacking (inherited TTP) or if antibodies against ADAMTS13 are present (acquired TTP).
|
21531732 |
2011 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Together, our findings suggest that the novel cell-based assay may be applicable for rapid identification and mapping of anti-ADAMTS13 autoantibodies in patients with acquired TTP.
|
21901237 |
2011 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
The autoantibody-resistant ADAMTS13 variants may be further developed as a novel therapeutic for acquired TTP with inhibitors.
|
22289888 |
2012 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Genetic mutations in and acquired autoantibodies to ADAMTS13 cause congenital TTP (termed Upshaw-Schulman syndrome [USS]) and acquired TTP, respectively.
|
22264931 |
2012 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
Recombinant ADAMTS13 ought to be soon available for congenital TTP, while acquired TTP children might benefit from its administration, alone or in association with rituximab, to avoid or limit plasma exchange duration.
|
23422353 |
2013 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
A functional deficiency of ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif), a von-Willebrand factor (VWF) cleaving protease, is central to the pathogenesis of congenital and acquired thrombotic thrombocytopenic purpura (TTP).
|
23420593 |
2013 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
ADAMTS13 activity evaluation and detection of anti-ADAMTS13 antibody could help to predict the risk of complications in pregnant women with a history of acquired TTP.
|
25431165 |
2014 |
Thrombotic thrombocytopenic purpura, acquired
|
0.100 |
Biomarker
|
disease |
BEFREE |
We also present data on 12 women with a history of nonpregnancy-associated TTP: 18 subsequent pregnancies have been successfully managed, guided by ADAMTS13 levels. cTTP presents more frequently than acquired TTP during pregnancy and must be differentiated by ADAMTS13 analysis.
|
24859360 |
2014 |