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Elimination of specific surface-exposed single tyrosine (Y) residues substantially improves hepatic gene transfer with adeno-associated virus type 2 (AAV2) vectors. Here, combinations of mutations in the seven potentially relevant Y residues were evaluated for further augmentation of transduction
Hemophilia A is a rare hemorrhagic disorder caused by the lack of functional pro-coagulant factor VIII. Factor VIII replacement therapy in patients with severe hemophilia A results in the development of inhibitory anti-factor VIII IgG in up to 30% of cases. To date, immune tolerance induction, with
The purpose of the present study was to determine the normal sequence for the gene encoding factor IX in cats and to characterize the genetic basis for hemophilia B in 2 unrelated male, domestic, mixed-breed cats. Genomic DNA sequence for the entire coding region of the factor IX gene was determined
Haemophilia B is a X-linked recessive bleeding disorder with an incidence of 1:25,000-30,000 male birth. Usually female carriers are clinically normal. Phenotypic expression of the disease in female carriers is extremely rare. We describe cytogenetically inconspicuous female identical twins both
BACKGROUND
Hemophilia A is an X-linked disorder caused by a deficiency in coagulation factor VIII. Over 2300 unique mutations in the gene-encoding factor VIII have been documented in people, but limited information is known in dogs. An 11-week-old male Boxer and a 5-year-old male German Shepherd
Congenital combined coagulation factor V and coagulation factor VIII deficiency (F5F8D) is a rare bleeding disorder due to mutations in the LMAN1 or MCFD2 genes. Here we report the first Polish family with F5F8 deficiency due to a mutation in the MCFD2 gene. The proposita suffered from mild bleeding
Recombinant vectors based on a non-pathogenic human parvovirus, the adeno-associated virus (AAV), have gained attention as a potentially safe and useful alternative to the more commonly used retroviral and adenoviral vectors. AAV vectors are currently in use in Phase I/II clinical trials for gene
Recombinant Factor VIII (rFVIII) is involved in the cascade of biochemical reactions leading to blood coagulation and is used for the treatment of haemophilia A. Plasma-derived FVIII (pdFVIII) has been reported to be post-translationally modified by sulfation of tyrosine residues at positions 346,
Recent data demonstrate that the introduction into skeletal muscle of an adeno-associated viral (AAV) vector expressing blood coagulation factor IX (F.IX) can result in long-term expression of the transgene product and amelioration of the bleeding diathesis in animals with hemophilia B. These data
The identification of defective genes associated with a number of human disorders (tyrosine hydroxylase for Parkinson's disease, aspartylglucosaminidase in lysosomal storage disease, CFTR in cystic fibrosis, and LDL receptor in familial hypercholesterolemia) has promoted the development of
Background: The precise, functional and safe insertion of large DNA payloads into host genomes offers versatility in downstream genetic engineering-associated applications, spanning cell and gene therapies, therapeutic protein production,
Factor VIII is a trace plasma glycoprotein involved as a cofactor in the activation of factor X by factor IXa. Inherited deficiency of factor VIII results in the X-linked bleeding disorder hemophilia A which has been documented in humans, horses, sheep and dogs. In this report, the putative proximal
Point mutations in the factor VIII gene are responsible for the majority of cases of hemophilia A, and only a small fraction of these mutations can be recognized by restriction endonuclease analysis. We have now used polymerase chain reaction and denaturing gradient gel electrophoresis to
Human factor VIII (FVIII) is a protein of the blood coagulation system that is absent or defective in patients with haemophilia A. A most serious complication following replacement therapy in 10-15% of patients treated with available FVIII concentrate is the development of inhibitors of FVIII
Genetic transmission in manic depressive illness (MDI) has been explored in twins, adoption, association, and linkage studies. The X-linked transmission hypothesis has been tested by using several markers on chromosome X: Xg blood group, colour blindness, glucose-6-phosphate dehydrogenase (G6PD),