<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T03:46:04Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2445/201299" metadataPrefix="qdc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2445/201299</identifier><datestamp>2025-12-05T09:43:13Z</datestamp><setSpec>com_2072_1057</setSpec><setSpec>col_2072_478778</setSpec><setSpec>col_2072_478917</setSpec></header><metadata><qdc:qualifieddc xmlns:qdc="http://dspace.org/qualifieddc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://purl.org/dc/elements/1.1/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dc.xsd http://purl.org/dc/terms/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dcterms.xsd http://dspace.org/qualifieddc/ http://www.ukoln.ac.uk/metadata/dcmi/xmlschema/qualifieddc.xsd">
   <dc:title>Salivary secretory immunoglobulin A as a potential biomarker of psychosocial stress response during the first stages of life: A systematic review</dc:title>
   <dc:creator>Castro Quintas, Águeda</dc:creator>
   <dc:creator>Palma-Gudiel, Helena</dc:creator>
   <dc:creator>San Martín-Gonzalez, Nerea</dc:creator>
   <dc:creator>Caso, Javier R.</dc:creator>
   <dc:creator>Leza, Juan C.</dc:creator>
   <dc:creator>Fañanás Saura, Lourdes</dc:creator>
   <dc:subject>Estrès (Psicologia)</dc:subject>
   <dc:subject>Ritmes circadiaris</dc:subject>
   <dc:subject>Infància</dc:subject>
   <dc:subject>Adolescència</dc:subject>
   <dc:subject>Resposta immunitària</dc:subject>
   <dc:subject>Stress (Psychology)</dc:subject>
   <dc:subject>Circadian rhythms</dc:subject>
   <dc:subject>Childhood</dc:subject>
   <dc:subject>Adolescence</dc:subject>
   <dc:subject>Immune response</dc:subject>
   <dcterms:abstract>Mucosal secretory immunoglobulin A (s-IgA) has been recognized as a key component of human first line defense against infection. However, its reactivity to psychosocial stressors is poorly understood. This systematic review aimed to explore whether s-IgA levels changed after psychosocial stress in subjects under the age of 18. Fifteen articles were included. s-IgA basal levels are increased in children older than 9 years old exposed to stress. Furthermore, s-IgA seems to follow a circadian rhythm, which is altered under stress conditions. Finally, the collective evidence suggests that salivary s-IgA rapidly increases under acute stress after puberty. Overall, our review indicates that s-IgA could be considered a potential psychosocial stress biomarker of interest for pediatric and child-juvenile psychiatric population. Further studies are needed to validate the role of s-IgA circadian rhythm and basal levels as psychosocial stress biomarkers and disentangle the role of age and type of stressor.</dcterms:abstract>
   <dcterms:issued>2023-07-28T08:14:54Z</dcterms:issued>
   <dcterms:issued>2023-07-28T08:14:54Z</dcterms:issued>
   <dcterms:issued>2023-07-21</dcterms:issued>
   <dcterms:issued>2023-07-28T08:14:54Z</dcterms:issued>
   <dc:type>info:eu-repo/semantics/article</dc:type>
   <dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
   <dc:relation>Reproducció del document publicat a: https://doi.org/10.1016/j.yfrne.2023.101083</dc:relation>
   <dc:relation>Frontiers in Neuroendocrinology, 2023, vol. 71, num. 101083, p. 1-16</dc:relation>
   <dc:relation>https://doi.org/10.1016/j.yfrne.2023.101083</dc:relation>
   <dc:rights>cc-by-nc-nd (c) Castro-Quintas, Águeda et al., 2023</dc:rights>
   <dc:rights>https://creativecommons.org/licenses/by-nc-nd/4.0/</dc:rights>
   <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
   <dc:publisher>Elsevier</dc:publisher>
   <dc:source>Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)</dc:source>
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