protein c deficiency/arginine

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Mechanism of protein C deficiency in a patient with arginine 358 alpha 1-antitrypsin (Pittsburgh mutation): role in the maintenance of hemostatic balance.

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We recently described a new case of alpha 1-antithrombin (alpha 1-AT) Pittsburgh, a mutation that transforms alpha 1-AT into a potent inhibitor of thrombin. In contrast to the originally described patient, who had a severe hemorrhagic diathesis, our proband had only a mild bleeding tendency. The

Familial variant of antithrombin III (AT III Bligny, 47Arg to His) associated with protein C deficiency.

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The association of a variant of antithrombin III (AT III Bligny) and protein C deficiency is described in a 36-year-old patient having suffered from severe thrombotic episodes. His mother has protein C deficiency and showed a single episode of thrombophlebitis following surgery. His father, sister

[A point mutation at Arg169 (CGG-->TGG) in hereditary protein C deficiency].

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We investigated a 56-year-old Japanese man with protein C deficiency, who was referred to our hospital because of venous sinus thrombosis and pulmonary thromboembolism. Protein C (PC) activity and the corresponding antigen level in plasma were 66% and 106% of the normal values, respectively. Both

Hereditary protein C deficiency associated with mutations in exon IX of the protein C gene.

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This report describes five families with symptomatic hereditary protein C deficiency. Using a polymerase chain reaction (PCR)-based method, the entire coding sequence and intron-exon boundaries of the protein C gene was amplified from genomic DNA. In each family a single point mutation in the

Protein C deficiency: identification of a novel two-base pair insertion and two point mutations in exon 7 of the protein C gene in Spanish families.

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We have applied single-strand conformation polymorphism (SSCP) to the analysis of exon 7 of the anticoagulant protein C (PC) gene, in 13 PC-deficient Spanish families. Abnormal patterns were visualized in three samples from type I or quantitative PC deficient proposita. A previously undescribed

Homozygosity for R87H missense mutation and for a rare intron 7 DNA variant (7054G --> A) in the PROC genes of three siblings initially classified as heterozygotes for protein C deficiency.

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We report the results of protein C gene (PROC) analysis in a Spanish family with hereditary PC deficiency characterized by the presence of three siblings with PC anticoagulant activity levels clearly below 50% of normal and PC antigen and amidolytic activities between 50 and 75% of normal. Their

Symptomatic type II protein C deficiency caused by a missense mutation (Gly 381-->Ser) in the substrate-binding pocket.

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A patient with recurrent deep vein thrombosis and heterozygous type II deficiency, characterized by reduced protein C activity in both amidolytic and clotting functional assays, was investigated by direct sequencing of PCR fragments derived from the coding portion of the protein C gene. AG (8856) to

Hereditary thrombophilia: identification of nonsense and missense mutations in the protein C gene.

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The structure of the gene for protein C, an anticoagulant serine protease, was analyzed in 29 unrelated patients with hereditary thrombophilia and protein C deficiency. Gene deletion(s) or gross rearrangement(s) was not demonstrable by Southern blot hybridization to cDNA probes. However, two

Five novel mutations located in exons III and IX of the protein C gene in patients presenting with defective protein C anticoagulant activity.

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We describe five families presenting with type II hereditary protein C deficiency characterized by normal antigen and amidolytic activity levels but low anticoagulant activity. All the exons and intron/exon junctions of the protein C gene were studied using a strategy combining amplification by the

Structural basis for type I and type II deficiencies of antithrombotic plasma protein C: patterns revealed by three-dimensional molecular modelling of mutations of the protease domain.

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Familial deficiency of protein C is associated with inherited thrombophilia. To explore how specific missense mutations might cause observed clinical phenotypes, know protein C missense mutations were mapped onto three-dimensional homology models of the protein C protease domain, and the

What could be the most advantageous therapeutic approach to avoid both arterial and venous thrombosis in hyperhomocysteinemia?

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Dear Editor, Thrombophilia is the tendency to form blood clots both in arteries and veins [1]. Inherited and acquired high plasma homocysteine (HHcy) levels are judged as thrombophilic agents because can induce both arterial and venous thrombosis [2-5]. But, the association of hHHcy with Venous

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