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Salivary alpha-amylase during pregnancy: Diurnal course and associations with obstetric history, maternal demographics and mood

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Author
Giesbrecht, Gerald
Granger, Douglas
Campbell, Tavis
Kaplan, Bonnie
APrON Study Team
Accessioned
2015-11-07T04:25:39Z
Available
2015-11-07T04:25:39Z
Issued
2013-03
Subject
salivary alpha-amylase
psychological distress
pregnancy
stress
mood
obstetric history
Type
journal article
Metadata
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Abstract
Diurnal patterns of salivary alpha amylase (sAA) in pregnant women have not previously been described. The current study employed ecological momentary assessment to examine the association between the diurnal sAA, obstetric history, maternal demographics, and mood during pregnancy. Saliva was self-collected by 83 pregnant women (89% White, age 25.3-43.0 years; mean gestational age 21.9 weeks, range 6-37 weeks; gravida 1-6) at home over three days. Results indicated that current pregnancy (gestational age and fetal sex) and maternal demographics were not related to diurnal sAA. In contrast, a history of previous miscarriage (Parameter = -.17; SE = .05; p < .05) was associated with an atypical diurnal pattern. Even after accounting for obstetric history, trait anxiety (Parameter = .16; SE = .04; p < .001) was associated with increased sAA over the day while chronic levels of fatigue (Parameter = -.06; SE = .03; p < .05) were associated with decreased sAA. In a separate model, we also tested the time varying covariation of sAA and mood. The effects of momentary mood were in contrast to those for trait mood. Both momentary depression (Parameter = .22; SE = .09; p < .01) and vigour/positive mood (Parameter = .12; SE = .04; p < .001) were associated with momentary increases in sAA while momentary anxiety and fatigue were not related to sAA. The findings suggest that basal sAA during pregnancy is sensitive to emotional arousal. Evaluating diurnal patterns of sAA holds promise for advancing understanding of how emotional arousal during pregnancy may affect fetal development.
Refereed
Yes
Sponsorship
This research was supported in part by funding from Alberta Innovates Health Solutions, the Alberta Children’s Hospital Research Institute, and the Department of Paediatrics, University of Calgary. The authors thank the participants of the Pregnancy Mood and Cortisol study for the time and effort they contributed to this research and Claudia Buss for helpful comments on a previous draft of this paper.
Author's accepted manuscript deposited according to Wiley archiving policies: http://olabout.wiley.com/WileyCDA/Section/id-820227.html
 
Citation
Giesbrecht, G.F., Granger, D., Campbell, T., & Kaplan, B. and the APrON Study Team. (2013). Salivary alpha-amylase during pregnancy: Diurnal course and associations with obstetric history, maternal characteristics and mood. Developmental Psychobiology, 55, 156-167.
Corporate
University of Calgary
Department
Department of Paediatrics
Faculty
Medicine
Institution
University of Calgary
Url
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1098-2302
Publisher
Developmental Psychobiology
Doi
http://dx.doi.org/10.1002/dev.21008
http://dx.doi.org/10.11575/PRISM/33653
Uri
http://hdl.handle.net/1880/51012
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