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Does the genotype of HHT patients with mutations of the ENG and ACVRL1 gene correlate to different expression levels of the angiogenic factor VEGF?

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The aim of this study was to determine in what way HHT (hereditary hemorrhagic telangiectasia) patients with mutations for the endoglin (ENG) or activin receptor-like kinase 1 (ACVRL1) gene show different expression levels of the angiogenic factor VEGF (vascular endothelial growth factor) by correlating VEGF to the HHT genotype. In 18 HHT patients, who were screened for ENG and ACVRL1 gene mutations and 25 healthy controls the VEGF plasma level as well as the VEGF tissue expression were determined by ELISA technique and cryostat sections of the nasal mucosa. In general, the VEGF plasma levels as well as the VEGF tissue expression were significantly higher in HHT patients compared to healthy controls. However, the correlation of VEGF to the HHT genotype did not show any significant differences, i.e. the VEGF plasma levels as well as the VEGF tissue expression in HHT patients with ENG gene mutations did not differ significantly to those of HHT patients with ACVRL1 gene mutations or mutations for both the genes. In spite of the fact that the angiogenic factor VEGF seems to play an important role in the pathogenesis of HHT, it cannot serve as a specific diagnostic screening marker. These results underline the importance and necessity of molecular analyses in HHT patients.
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Document Type: Research Article

Affiliations: Department of Otolaryngology, Head and Neck Surgery, Medical Faculty of Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer, D-68135 Mannheim, Germany., Email: [email protected]

Publication date: November 1, 2008

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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