Experimental Physiology Celebrating 100 years
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Physiology in Press

First published online on October 20, 2005.
Experimental Physiology (2005)
DOI: 10.1113/expphysiol.2005.031971
© The Physiological Society 2005
A more recent version of this article appeared on January 1, 2006
This Article
Right arrow Full Text (Rapid PDF)
Right arrow All Versions of this Article:
91/1/215    most recent
expphysiol.2005.031971v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hayashi, N.
Right arrow Articles by Fukuba, Y.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hayashi, N.
Right arrow Articles by Fukuba, Y.

Received August 15, 2005
Revised September 9, 2005
Accepted after revision October 19, 2005

Cardiovascular control

Vasoconstriction and blood flow responses in visceral arteries to mental task

Naoyuki Hayashi 1*, Nami Someya 1, Masako Yamaoka Endo 2, Akira Miura 2, Yoshiyuki Fukuba 2

1 Kyushu University
2 Prefectural University of Hiroshima

* To whom correspondence should be addressed. E-mail: naohayashi{at}ihs.kyushu-u.ac.jp.


  Abstract
The vascular responses to mental task in human in visceral arteries have not been elucidated. We observed the responses in the renal (RA) and superior mesenteric (SMA) arteries to mental stress, using simultaneous pulsed and echo Doppler ultrasound flowmetry. Nine healthy females performed a computerized colour word conflict test (CWT) for 3 minutes. The mean blood velocity (MBV) in the right RA and SMA, heart rate (HR) and blood pressure were measured. The flow velocity was divided by the mean arterial pressure (MAP) to assess the vascular resistance (VR). The CWT significantly increased the MAP, HR and VR in both arteries from the 1st minute. During the CWT, the RA flow decreased significantly at the 3rd minute relative to baseline, while the SMA flow showed no significant change from the 1st to the 3rd minute. The degree of vasoconstriction in the RA bed was greater than that in the SMA bed. These results suggest that the mental task causes vasoconstriction in viscera arteries, and imply that it induces differential blood flow and vascular responses in visceral arteries.

Key Words: Autonomic nervous system, Stress, Vascular blood flow




This article has been cited by other articles:


Home page
 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
N. Someya, M. Y. Endo, Y. Fukuba, and N. Hayashi
Blood flow responses in celiac and superior mesenteric arteries in the initial phase of digestion
Am J Physiol Regulatory Integrative Comp Physiol, June 1, 2008; 294(6): R1790 - R1796.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
M. Y. Endo, R. Suzuki, N. Nagahata, N. Hayashi, A. Miura, S. Koga, and Y. Fukuba
Differential arterial blood flow response of splanchnic and renal organs during low-intensity cycling exercise in women
Am J Physiol Heart Circ Physiol, May 1, 2008; 294(5): H2322 - H2326.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
N. T. Kuipers, C. L. Sauder, J. R. Carter, and C. A. Ray
Neurovascular responses to mental stress in the supine and upright postures
J Appl Physiol, April 1, 2008; 104(4): 1129 - 1136.
[Abstract] [Full Text] [PDF]

Home page
 Exp PhysiolHome page
Errata
Exp Physiol, March 1, 2006; 91(2): 481 - 482.
[Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Copyright © 2005 by the The Physiological Society.