title: Changes of coagulation inhibitors and fibrinolysis system in newborn infants with transitory neonatal cholestasis.
abstract: BACKGROUND
  The hemostatic system in newborn is a dynamic evolving process health-status dependent.
  
  
  OBJECTIVE
  To explore the changes in coagulation inhibitors and fibrinolytic system in newborn with neonatal cholestasis, according liver damage intensity.
  
  
  METHODS
  In a cross-sectional design, we studied fibrinolysis and coagulation inhibitor proteins, and serum ferritin (SF) in patients with neonatal cholestasis. We stratified the cases according the results of ALT or AST < 100 UI (group I) and > or =100 U/L (group II).
  
  
  RESULTS
  We included 24 newborn, 8 for Group I and 16 cases for group II. We documented statistical differences in ATIII values (43.4 vs 27.4%, p < 0,01), plasmin inhibitor (93.5 vs 63.6%, p < 0.01), SF (649 vs 1410 ug/L, p 0.01). The group II cases showed association with SF values (f 20.6, p < 0.01) and plasmin inhibitor (f 40.4, p < 0.01). AST and ALT were related significantly to ATIII concentrations and SF.
  
  
  CONCLUSIONS
  We documented tendency to prothrombotic state (lower ATIII and greater plasmin inhibitor activity), with low plasminogen related to the intensity of liver dysfunction in neonatal cholestasis. We need to determine the role of iron overload in physiopathology of the disease.
authors.affiliation: Perinatal Hematology, National Institute of Perinatology, Mexico City, Mexico.
authors.forename: Héctor
authors.initials: H
authors.lastname: Baptista-González
authors.forename: Fabiola
authors.initials: F
authors.lastname: Gutiérrez-Landeros
authors.forename: Fany
authors.initials: F
authors.lastname: Rosenfeld-Mann
authors.forename: Rocío
authors.initials: R
authors.lastname: Trueba-Gómez
mesh_terms: D000933:Antifibrinolytic Agents / Q000097:blood*; D019774:Blood Coagulation Factor Inhibitors / Q000097:blood*; D003430:Cross-Sectional Studies; D005293:Ferritins / Q000097:blood; D005338:Fibrin Fibrinogen Degradation Products / Q000378:metabolism*; D006801:Humans; D007231:Infant, Newborn; D007567:Jaundice, Neonatal / Q000097:blood*; D010958:Plasminogen / Q000378:metabolism*; D017395:Plasminogen Activator Inhibitor 1 / Q000097:blood*; D010976:Platelet Count; D013577:Syndrome
chemical_list: D000933:Antifibrinolytic Agents; D019774:Blood Coagulation Factor Inhibitors; D005338:Fibrin Fibrinogen Degradation Products; D017395:Plasminogen Activator Inhibitor 1; C036309:fibrin fragment D; D010958:Plasminogen; D005293:Ferritins