| pubmed-article:18802023 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C0078058 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C1948058 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C0022116 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C0018270 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C0851285 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C1522492 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C1521902 | lld:lifeskim |
| pubmed-article:18802023 | lifeskim:mentions | umls-concept:C0302891 | lld:lifeskim |
| pubmed-article:18802023 | pubmed:issue | 9 | lld:pubmed |
| pubmed-article:18802023 | pubmed:dateCreated | 2008-10-24 | lld:pubmed |
| pubmed-article:18802023 | pubmed:abstractText | The density of native (preexisting) collaterals and their capacity to enlarge into large conduit arteries in ischemia (arteriogenesis) are major determinants of the severity of tissue injury in occlusive disease. Mechanisms directing arteriogenesis remain unclear. Moreover, nothing is known about how native collaterals form in healthy tissue. Evidence suggests vascular endothelial growth factor (VEGF), which is important in embryonic vascular patterning and ischemic angiogenesis, may contribute to native collateral formation and arteriogenesis. Therefore, we examined mice heterozygous for VEGF receptor-1 (VEGFR-1(+/-)), VEGF receptor-2 (VEGFR-2(+/-)), and overexpressing (VEGF(hi/+)) and underexpressing VEGF-A (VEGF(lo/+)). Recovery from hindlimb ischemia was followed for 21 days after femoral artery ligation. All statements below are P<0.05. Compared to wild-type mice, VEGFR-2(+/-) showed similar: ischemic scores, recovery of hindlimb perfusion, pericollateral leukocytes, collateral enlargement, and angiogenesis. In contrast, VEGFR-1(+/-) showed impaired: perfusion recovery, pericollateral leukocytes, collateral enlargement, worse ischemic scores, and comparable angiogenesis. Compared to wild-type mice, VEGF(lo/+) had 2-fold lower perfusion immediately after ligation (suggesting fewer native collaterals which was confirmed by angiography) and blunted recovery of perfusion. VEGF(hi/+) mice had 3-fold greater perfusion immediately after ligation, more native collaterals, and improved recovery of perfusion. These differences were confirmed in the cerebral pial cortical circulation where, compared to VEGF(hi/+) mice, VEGF(lo/+) formed fewer collaterals during the perinatal period when adult density was established, and had 2-fold larger infarctions after middle cerebral artery ligation. Our findings indicate VEGF and VEGFR-1 are determinants of arteriogenesis. Moreover, we describe the first signaling molecule, VEGF-A, that specifies formation of native collaterals in healthy tissues. | lld:pubmed |
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| pubmed-article:18802023 | pubmed:language | eng | lld:pubmed |
| pubmed-article:18802023 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:18802023 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:18802023 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:18802023 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:18802023 | pubmed:month | Oct | lld:pubmed |
| pubmed-article:18802023 | pubmed:issn | 1524-4571 | lld:pubmed |
| pubmed-article:18802023 | pubmed:author | pubmed-author:ChalothornDan... | lld:pubmed |
| pubmed-article:18802023 | pubmed:author | pubmed-author:FaberJames... | lld:pubmed |
| pubmed-article:18802023 | pubmed:author | pubmed-author:ClaytonJason... | lld:pubmed |
| pubmed-article:18802023 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:18802023 | pubmed:day | 24 | lld:pubmed |
| pubmed-article:18802023 | pubmed:volume | 103 | lld:pubmed |
| pubmed-article:18802023 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:18802023 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:18802023 | pubmed:pagination | 1027-36 | lld:pubmed |
| pubmed-article:18802023 | pubmed:dateRevised | 2011-4-12 | lld:pubmed |
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| pubmed-article:18802023 | pubmed:meshHeading | pubmed-meshheading:18802023... | lld:pubmed |
| pubmed-article:18802023 | pubmed:year | 2008 | lld:pubmed |
| pubmed-article:18802023 | pubmed:articleTitle | Vascular endothelial growth factor-A specifies formation of native collaterals and regulates collateral growth in ischemia. | lld:pubmed |
| pubmed-article:18802023 | pubmed:affiliation | Department of Cell and Molecular Physiology, University of North Carolina, Chapel Hill, NC 27599-7545, USA. | lld:pubmed |
