NDLI: Physiological role of nitric oxide in oxygen consumption by arteriolar wall

Content Provider	IEEE Xplore Digital Library
Author	Shibata, Masahiro Yamakoshi, Takehiro Yamakoshi, Ken-ichi.
Copyright Year	2008
Description	Author affiliation: Dept. Bioscience and Engineering, Shibaura Institute of Technology, Saitama, Japan (Shibata, Masahiro) \|\| Dept. Human and Mechanical System Engineering, Kanazawa University, Japan (Yamakoshi, Takehiro; Yamakoshi, Ken-ichi.)
Abstract	To study the role of nitric oxide (NO) in regulating oxygen consumption by vessel walls, the oxygen consumption rate of arteriolar walls in rat cremaster muscle was measured in vivo during flow-induced vasodilation and after inhibiting NO synthesis. The oxygen consumption rate of arteriolar walls was calculated based on the intra- and peri-vascular oxygen tension (PO2) values measured by phosphorescence quenching laser microscopy. The peri-vascular PO2 value of the arterioles during vasodilation was significantly higher than under control conditions, although the intravascular PO2 values under both conditions were approximately the same. On the other hand, inhibition of NO synthesis caused a significant decrease in both the intra- and peri-vascular PO2 values of the arterioles. The inhibition of NO synthesis increased the oxygen consumption rate of the vessel walls by 42%, whereas enhancement of flow-induced NO release decreased it by 34%. These results suggest that NO plays an important role not only as a regulator of peripheral vascular tone, but also as a modulator of tissue oxygen consumption by reducing oxygen consumption by vessel walls.
Starting Page	1389
Ending Page	1392
File Size	238098
Page Count	4
File Format	PDF
ISBN	9781424418145
ISSN	1557170X
DOI	10.1109/IEMBS.2008.4649424
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-20
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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