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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Hypoxia inducible factor-1alpha and expression of vascular endothelial growth factor and its receptors in cerebral arteriovenous malformations.

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 factor-1 (HIF-1alpha) in CAVM and its relationship to VEGF and VEGFR. METHODS: Surgical specimens from 26 patients undergoing CAVM resection were studied for HIF-1alpha , VEGF, Flt-1, Flk-1 and Flt-4. The mean age was 34.08 +/- 14.18 years. Twenty-one patients presented with intracerebral haemorrhage. RESULTS: VEGF, Flt-1 and Flt-4 were expressed in all specimens. Flk-1 was expressed in 15 of 26 patients. HIF-1alpha was expressed in 15 of 26 patients. HIF-1alpha expression was significantly associated with VEGF, Flt-1 and Flk-1 expression (p < 0.05) CONCLUSIONS: HIF-1alpha is expressed in human CAVM. The expression of HIF-1alpha is significantly related to VEGF and VEGFR expression, suggesting a possible role for its induction and role in maintaining angiogenesis and vascular remodelling.[1]

References

  1. Hypoxia inducible factor-1alpha and expression of vascular endothelial growth factor and its receptors in cerebral arteriovenous malformations. Ng, I., Tan, W.L., Ng, P.Y., Lim, J. Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia. (2005) [Pubmed]
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