Document Detail

Salivary flow and alpha-amylase: collection technique, duration, and oral fluid type.
MedLine Citation:
PMID:  20515701     Owner:  NLM     Status:  In-Process    
There has been renewed interest in salivary alpha-amylase (sAA), a surrogate marker of autonomic/sympathetic activity, in biosocial research on stress vulnerability, reactivity, and recovery. This study explored the impact of saliva flow rate on sAA measurement by examining the influence of (1) the technique used to collect oral fluid-synthetic swab, cotton pledget, hydrocellulose microsponge, or passive drool; (2) collection point duration--the length of time the technique is employed (1-5min); and (3) oral fluid type--whole unstimulated saliva (not absorbed by any material) or oral fluid sampled from areas near the parotid, submandibular, or sublingual salivary glands. sAA activity (U/mL) was the highest in oral fluid collected from the parotid and submandibular gland areas. The volume (mL) of oral fluid collected increased, and the activity of sAA (U/mL) decreased, as collection point duration lengthened. The magnitude of these effects varied according to collection technique and oral fluid type. Across all conditions, there were positive correlations (range .70-.88) between sAA activity (U/mL) and sAA output (U/min). Management of these potential sources of measurement error will be essential to ensuring the success of future research on the correlates and concomitants of sAA activity, stress-related reactivity and recovery, and diurnal variation.
Emilie K Beltzer; Christine K Fortunato; Melissa M Guaderrama; Melissa K Peckins; Bianca M Garramone; Douglas A Granger
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-06-01
Journal Detail:
Title:  Physiology & behavior     Volume:  101     ISSN:  1873-507X     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-07-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  289-96     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
Behavioral Endocrinology Laboratory, The Pennsylvania State University, USA; Department of Biobehavioral Health, The Pennsylvania State University, USA.
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