Salivary 3-methoxy-4-hydroxyphenylglycol increases after awakening in healthy young adults
Levels of 3‐methoxy‐4‐hydroxyphenylglycol (MHPG) may reflect central noradrenergic activity. In this study, we investigated salivary MHPG changes after awakening, and explored their relationships with cortisol and peripheral autonomic activity. The participants were 25 college students. Saliva sampl...
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Published in | Psychophysiology Vol. 52; no. 3; pp. 425 - 428 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Blackwell Publishing Ltd
01.03.2015
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Subjects | |
Online Access | Get full text |
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Summary: | Levels of 3‐methoxy‐4‐hydroxyphenylglycol (MHPG) may reflect central noradrenergic activity. In this study, we investigated salivary MHPG changes after awakening, and explored their relationships with cortisol and peripheral autonomic activity. The participants were 25 college students. Saliva samples were collected on awakening and 30 min after awakening to determine MHPG and cortisol. Ambulatory electrocardiograms were obtained to assess heart rate, cardiac sympathetic index (CSI), and cardiac vagal index (CVI) before and after awakening. MHPG levels increased significantly during the first 30 min after awakening. Similarly, cortisol, heart rate, and CSI increased during the 30 min after awakening, but changes in MHPG did not correlate with changes in cortisol, heart rate, CSI, and CVI during that period. This study demonstrated that salivary MHPG levels increase after awakening, in common with cortisol, heart rate, and cardiac sympathetic activity. |
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Bibliography: | istex:5F93DE1FE9E427A61950A297B5BD62621BC6B75A ark:/67375/WNG-37RN1D69-1 ArticleID:PSYP12330 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0048-5772 1540-5958 1469-8986 |
DOI: | 10.1111/psyp.12330 |