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Acquired factor X deficiency and amyloidosis. 1977

J R Krause

A selective acquired Factor X deficiency is an unusual occurrence. Six cases of an acquired Factor X deficiency in association with amyloidosis have been reported. This paper describes two additional cases, suggesting that this relationship may be more than coincidental. The mechanism by which amyloid may affect Factor X levels remains unknown, but suggestions include consumption, inactivation or decreased synthesis of Factor X. Factor II, VII, IX, and X concentrate transiently increased the Factor X level to normal in one of the patients. In an adult patient who has an isolated Factor X deficiency, amyloidosis should be actively sought.

UI MeSH Term Description Entries
D007020 Hypoprothrombinemias Absence or reduced levels of PROTHROMBIN in the blood. Factor II Deficiency,Prothrombin Deficiency,Deficiency, Factor II,Hypoprothrombinemia,Deficiencies, Factor II,Deficiencies, Prothrombin,Deficiency, Prothrombin,Factor II Deficiencies,Prothrombin Deficiencies
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005171 Factor X Deficiency Blood coagulation disorder usually inherited as an autosomal recessive trait, though it can be acquired. It is characterized by defective activity in both the intrinsic and extrinsic pathways, impaired thromboplastin time, and impaired prothrombin consumption. Deficiency, Factor 10,Deficiency, Factor Ten,Deficiency, Factor X,Deficiency, Stuart-Prower,Deficiency, Stuart-Prower Factor,Factor 10 Deficiency,Factor Ten Deficiency,Stuart-Prower Deficiency,Stuart-Prower Factor Deficiency,Deficiencies, Factor 10,Deficiencies, Factor Ten,Deficiencies, Factor X,Deficiency, Stuart Prower,Deficiency, Stuart Prower Factor,Factor 10 Deficiencies,Factor Ten Deficiencies,Factor X Deficiencies,Stuart Prower Deficiency,Stuart Prower Factor Deficiency,Ten Deficiencies, Factor
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000686 Amyloidosis A group of sporadic, familial and/or inherited, degenerative, and infectious disease processes, linked by the common theme of abnormal protein folding and deposition of AMYLOID. As the amyloid deposits enlarge they displace normal tissue structures, causing disruption of function. Various signs and symptoms depend on the location and size of the deposits. Amyloidoses

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