Reduced difference of α2-plasmin inhibitor levels between plasma and serum in patients with severe factor XIII deficiency, including autoimmune hemorrhaphilia due to anti-factor XIII antibodies.
Int J Hematol
; 95(1): 47-50, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-22205503
ABSTRACT
Coagulation factor XIII/13 (FXIII/13) stabilizes fibrin molecules by creating crosslinks with other fibrin molecules as well as with α2-plasmin inhibitor (α2-PI). "Hemorrhagic acquired FXIII/13 deficiency" was formerly considered rare, but has been increasing recently in Japan. During the 10 months of our nationwide campaign, we diagnosed five new patients with "acquired hemorrhaphilia due to anti-FXIII/13 autoantibodies," after examining 20 newly suspected cases of "hemorrhagic acquired FXIII/13 deficiency." When FXIII/13 activity was reduced to less than 50% of normal, it was proportional to the difference in α2-PI levels between plasma and serum (plasma-serum α2-PI), likely due to its cross-linking to fibrin by activated FXIII/13. Accordingly, decreased amounts of the plasma-serum α2-PI ex vivo may reflect reduced FXIII/13 activity in vivo. The plasma-serum α2-PI may thus also be a useful diagnostic marker for severe FXIII/13 deficiency.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fator XIII
/
Autoimunidade
/
Alfa 2-Antiplasmina
/
Deficiência do Fator XIII
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article