Douglas A. Marchuk

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Cerebral cavernous malformations (CCMs) are sporadically acquired or inherited vascular lesions of the central nervous system consisting of clusters of dilated thin-walled blood vessels that predispose individuals to seizures and stroke. Familial CCM is caused by mutations in KRIT1 (CCM1) or in malcavernin (CCM2), the murine ortholog of which was(More)
Hereditary haemorrhagic telangiectasia, or Osler-Rendu-Weber (ORW) syndrome, is an autosomal dominant vascular dysplasia. So far, two loci have been demonstrated for ORW. Linkage studies established an ORW locus at chromosome 9q3; endoglin was subsequently identified as the ORW1 gene. A second locus, designated ORW2, was mapped to chromosome 12. Here we(More)
Venous malformations (VMs), the most common errors of vascular morphogenesis in humans, are composed of dilated, serpiginous channels. The walls of the channels have a variable thickness of smooth muscle; some mural regions lack smooth muscle altogether. A missense mutation resulting in an arginine-to-tryptophan substitution at position 849 in the kinase(More)
BACKGROUND Juvenile polyposis and hereditary haemorrhagic telangiectasia are autosomal dominant disorders with distinct and non-overlapping clinical features. The former, an inherited gastrointestinal malignancy predisposition, is caused by mutations in MADH4 (encoding SMAD4) or BMPR1A, and the latter is a vascular malformation disorder caused by mutations(More)
Endoglin (CD105) is expressed on the surface of endothelial and haematopoietic cells in mammals and binds TGFbeta isoforms 1 and 3 in combination with the signaling complex of TGFbeta receptors types I and II. Endoglin expression increases during angiogenesis, wound healing, and inflammation, all of which are associated with TGFbeta signaling and(More)
We have identified a missense mutation in the motor domain of the neuronal kinesin heavy chain gene KIF5A, in a family with hereditary spastic paraplegia. The mutation occurs in the family in which the SPG10 locus was originally identified, at an invariant asparagine residue that, when mutated in orthologous kinesin heavy chain motor proteins, prevents(More)
Central nervous system (CNS) serotonergic function affects a wide range of biological and behavioral functions affecting health and disease. Our objective in this study was to determine whether functional polymorphisms of the genes that encode for the serotonin transporter promoter (5HTTLPR) and monoamine oxidase A (MAOA-uVNTR) are associated with CNS(More)
Cerebral cavernous malformations (CCM) are congenital vascular anomalies of the brain that can cause significant neurological disabilities, including intractable seizures and hemorrhagic stroke. One locus for autosomal dominant CCM ( CCM1 ) maps to chromosome 7q21-q22. Recombination events in linked family members define a critical region of approximately 2(More)
Cerebral cavernous malformation (CCM) is a common vascular dysplasia that affects both systemic and central nervous system blood vessels. Loss of function mutations in the CCM2 gene cause CCM. Here we show that targeted disruption of Ccm2 in mice results in failed lumen formation and early embryonic death through an endothelial cell autonomous mechanism. We(More)