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Verfasst von:Vogel, Johannes [VerfasserIn]   i
 Gehrig, Mathias [VerfasserIn]   i
 Kuschinsky, Wolfgang [VerfasserIn]   i
 Marti, Hugo [VerfasserIn]   i
Titel:Massive inborn angiogenesis in the brain scarcely raises cerebral blood flow
Verf.angabe:Johannes Vogel, Mathias Gehrig, Wolfgang Kuschinsky, and Hugo H. Marti
E-Jahr:2004
Jahr:[2004]
Umfang:11 S.
Teil:volume:24
 year:2004
 number:8
 pages:849-859
 extent:11
Fussnoten:Gesehen am 05.05.2021
Titel Quelle:Enthalten in: Journal of cerebral blood flow & metabolism
Ort Quelle:Thousands Oaks, Calif. : Sage, 1981
Jahr Quelle:2004
Band/Heft Quelle:24(2004), 8, Seite 849-859
ISSN Quelle:1559-7016
Abstract:The functional consequences of increased capillary densities in the brain resulting from vascular endothelial growth factor (VEGF165) overexpression are unknown. Therefore, the authors measured local CBF using the iodo-[14C]antipyrine technique in transgenic mice expressing brain-specifically sixfold higher VEGF165 levels and in nontransgenic littermates. To reveal possible compensatory vasoconstriction, CBF was also measured during severe hypercapnia (PaCO2 > 130 mm Hg). Simultaneously, local capillary density, perfusion state, and blood-brain-barrier permeability were assessed. Using the 2-[14C]deoxyglucose method, metabolic effects of VEGF overexpression could be excluded. In transgenic mice all capillaries showed normal morphology and a tight blood-brain barrier. However, 3% nonperfused capillaries in some brain structures indicate ongoing angiogenesis. Capillary density was drastically increased in transgenic mice in white matter structures (70% to 185%), the dentate gyrus (143%), and caudate nucleus (86%). In all other brain structures investigated, capillary densities were moderately increased by approximately 20%. Normocapnic CBF did not differ between transgenic and nontransgenic mice. During maximal hypercapnic vasodilation, CBF was 20% to 30% higher in transgenic mice, although only in brain structures where capillary density was increased more than twofold. These findings suggest that attenuated CBF in transgenic mice during normocapnia is only partly due to a compensatory vasoconstriction, and that microvascular networks in transgenic brains might be ineffectively constructed.
DOI:doi:10.1097/01.WCB.0000126564.89011.11
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1097/01.WCB.0000126564.89011.11
 DOI: https://doi.org/10.1097/01.WCB.0000126564.89011.11
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Blood brain barrier
 Microvascular perfusion
 Permeability
 Transgenic mice
 Vascular remodeling
 VEGF
K10plus-PPN:1757109560
Verknüpfungen:→ Zeitschrift

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