title: Role of the intrinsic coagulation pathway in atherogenesis assessed in hemophilic apolipoprotein E knockout mice.
abstract: OBJECTIVE
  The contribution of thrombosis and coagulation in atherogenesis is largely unknown. We investigated the contribution of the coagulation intrinsic factor VIII (FVIII)-dependent pathway in atherogenesis.
  
  
  RESULTS
  Apolipoprotein E and FVIII double-deficient mice (E degrees/FVIII degrees) were generated. Aortic root lesions were analyzed in 14-week-old and 22-week-old female mice maintained for 8 or 16 weeks, respectively, on a normal chow diet or a hypercholesterolemic diet.
  
  
  CONCLUSIONS
  Despite a higher plasma total cholesterol concentration compared with E degrees mice, E degrees/FVIII degrees mice developed dramatically less early-stage atherosclerotic lesions. Whereas early lesions in E degrees mice contained abundant fibrin(ogen) deposits on which few platelets adhered, lesions in E degrees/FVIII degrees were almost devoid of fibrin(ogen), and no platelets could be detected. The genotype effect on development and composition of lesions tended to decrease with time. This study demonstrates that the activation of the intrinsic pathway of coagulation is potently proatherogenic at the early stage of atherogenesis.
authors.affiliation: INSERM U681, UPMC, Institut des Cordeliers, Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Khallou-Laschet
authors.forename: G
authors.initials: G
authors.lastname: Caligiuri
authors.forename: E
authors.initials: E
authors.lastname: Tupin
authors.forename: A-T
authors.initials: AT
authors.lastname: Gaston
authors.forename: B
authors.initials: B
authors.lastname: Poirier
authors.forename: E
authors.initials: E
authors.lastname: Groyer
authors.forename: D
authors.initials: D
authors.lastname: Urbain
authors.forename: S
authors.initials: S
authors.lastname: Maisnier-Patin
authors.forename: R
authors.initials: R
authors.lastname: Sarkar
authors.forename: S V
authors.initials: SV
authors.lastname: Kaveri
authors.forename: S
authors.initials: S
authors.lastname: Lacroix-Desmazes
authors.forename: A
authors.initials: A
authors.lastname: Nicoletti
mesh_terms: D000818:Animals; D001057:Apolipoproteins E / Q000235:genetics* / Q000378:metabolism; D050197:Atherosclerosis / Q000235:genetics / Q000473:pathology / Q000503:physiopathology*; D001777:Blood Coagulation / Q000502:physiology*; D002784:Cholesterol / Q000096:biosynthesis / Q000097:blood; D005169:Factor VIII / Q000235:genetics* / Q000378:metabolism; D005260:Female; D006467:Hemophilia A / Q000235:genetics / Q000473:pathology / Q000503:physiopathology*; D051379:Mice; D018345:Mice, Knockout
chemical_list: D001057:Apolipoproteins E; D005169:Factor VIII; D002784:Cholesterol