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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4 Pt 2
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pubmed:dateCreated |
1996-12-16
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pubmed:abstractText |
The effect of NG-nitro-L-arginine (L-NNA) on regional cerebral blood flow (rCBF) response to hypercapnia (5% CO2 inhalation) was studied in urethan-anesthetized wild-type (SV-129) and type III nitric oxide (NO) synthase (NOS)-deficient mice, using laser-Doppler flowmetry and the closed cranial window technique. Resting rCBF during normocapnia decreased by approximately 25% after L-NNA superfusion in wild-type mice only (n = 18), suggesting a role for type III NOS in baseline blood flow. Hypercapnia augmented rCBF approximately 50% in both wild-type and type III NOS mutant mice. L-NNA superfusion (1 mM) inhibited this increase by approximately 60% in both strains. Hence, synthesis of NO by the constitutively expressed type I NOS contributes to blood flow augmentation during hypercapnia.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0002-9513
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
271
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
H1717-9
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:8897969-Administration, Topical,
pubmed-meshheading:8897969-Animals,
pubmed-meshheading:8897969-Cerebrovascular Circulation,
pubmed-meshheading:8897969-Enzyme Inhibitors,
pubmed-meshheading:8897969-Hypercapnia,
pubmed-meshheading:8897969-Mice,
pubmed-meshheading:8897969-Mice, Knockout,
pubmed-meshheading:8897969-Nitric Oxide Synthase,
pubmed-meshheading:8897969-Nitroarginine,
pubmed-meshheading:8897969-Vascular Resistance
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pubmed:year |
1996
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pubmed:articleTitle |
L-NNA-sensitive regional cerebral blood flow augmentation during hypercapnia in type III NOS mutant mice.
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pubmed:affiliation |
Department of Neurosurgery and Neurology, Massachusetts General Hospital, Charlestown, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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