title: [Relation between the distribution and orientation of collagen fibers and the inorganic phase of calcification processes in the anterior leaflet of the human mitral valve].
abstract: The collagen fibers observed in calcified valves appear randomly distributed without any preferential arrangement. In these areas also the hydroxylapatite crystals do not show any orientation. It is suggested that the disorder of the organic phase is a factor favouring the deposition of the calcium crystals.
mesh_terms: D002113:Calcification, Physiologic; D003094:Collagen / Q000032:analysis*; D003460:Crystallization; D017886:Durapatite; D006801:Humans; D006882:Hydroxyapatites / Q000032:analysis; D008943:Mitral Valve / Q000648:ultrastructure*
chemical_list: D006882:Hydroxyapatites; D003094:Collagen; D017886:Durapatite
vernacular_title: Correlazioni fra distribuzione ed orientamento dei fasci di fibre collagene e fase inorganica nei processi di calcificazione del lembo anteriore della valvola mitrale umana.