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arteriovenous malformations/tyrosine

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Arteriovenous malformations (AVMs) are congenital lesions composed of abnormal vasculature, with no capillary component, and are clinically significant due to their tendency to spontaneously hemorrhage. The mechanisms regulating the genesis and progression of these lesions are unknown. In order to
The development of metastatic renal cell carcinoma (RCC) many years after a nephrectomy is not common but has been reported. A metastasis appearing as a hypervascular tumour, mimicking an arteriovenous malformation (AVM), is a highly unusual phenomenon, with a biopsy required for
Essentials Antiangiogenic drugs are indicated as therapies for hereditary hemorrhagic telangiectasia. We interrogated the response to four antiangiogenic drugs for anemia and intestinal bleeding. Sorafenib and a pazopanib analog significantly improved while erlotinib worsened anemia. Some oral
Hereditary hemorrhagic telangiectasia is an autosomal dominant vascular disorder caused by heterozygous, loss-of-function mutations in 4 transforming growth factor beta (TGFβ) pathway members, including the central transcriptional mediator of the TGFβ pathway, Smad4. Loss of Smad4

EPHB4 Mutation Implicated in Capillary Malformation-Arteriovenous Malformation Syndrome: A Case Report.

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Capillary malformation-arteriovenous malformation (CM-AVM) syndrome, due to inactivating mutations in RASA1 in 68% of cases, is characterized by the development of cutaneous capillary malformations and arteriovenous malformations or fistulas; no known genetic etiology has been identified in patients
BACKGROUND Vascular endothelial growth factor (VEGF) and its tyrosine kinase family of receptors (VEGFR) (Flt-1, Flk-1, Flt-4) have been implicated in vascular angiogenesis and remodelling in cerebral arteriovenous malformations (CAVM). In this study, we investigate the role of hypoxia inducible
The orphan receptor tyrosine kinase Tie-1 is expressed predominantly in endothelial cells. Expression of this receptor is increased in physiologic angiogenesis and pathologic situations including tumor growth and arteriovenous malformations. Tie-1 is essential for vascular development where it acts

Correcting Smad1/5/8, mTOR, and VEGFR2 treats pathology in hereditary hemorrhagic telangiectasia models.

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Hereditary hemorrhagic telangiectasia (HHT), a genetic bleeding disorder leading to systemic arteriovenous malformations (AVMs), is caused by loss-of-function mutations in the ALK1-ENG-Smad1/5/8 pathway. Evidence suggests that HHT pathogenesis strongly relies on overactivated PI3K-Akt-mTOR and

Vascular Anomalies: From a Clinicohistologic to a Genetic Framework.

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Vascular anomalies currently are classified according to their clinical and histological characteristics. Recent advances in molecular genetics have enabled the identification of somatic mutations in most types of vascular anomalies. The purpose of this study was to collate information regarding the

Somatic mutations in exon 17 of the TEK gene in vascular tumors and vascular malformations.

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OBJECTIVE As a common disease, the molecular etiology of noninherited vascular anomalies is still poorly understood. Recently, somatic mutations in exon 17 of the endothelial cell tyrosine kinase receptor Tie-2 (encoded by TEK) were identified in 49.1% of patients with common sporadic venous

Endoglin controls cell migration and composition of focal adhesions: function of the cytosolic domain.

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Mutations in the human endoglin gene result in hereditary hemorrhagic telangiectasia type 1, a vascular disorder characterized by multisystemic vascular dysplasia, arteriovenous malformations, and focal dilatation of postcapillary venules. Previous studies have implicated endoglin in the inhibition
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