{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T18:44:58Z","timestamp":1789497898722,"version":"build-2803163510"},"reference-count":141,"publisher":"Public Library of Science (PLoS)","issue":"2","license":[{"start":{"date-parts":[[2025,2,28]],"date-time":"2025-02-28T00:00:00Z","timestamp":1740700800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec040\">\n<jats:title>Background<\/jats:title>\n<jats:p>Perinatal maternal stress, which includes both psychological and physiological stress experienced by healthy women during pregnancy and the postpartum period, is becoming increasingly prevalent. Infant early exposure to adverse environments such as perinatal stress has been shown to increase the long-term risk to metabolic, immunologic and neurobehavioral disorders. Evidence suggests that the human microbiome facilitates the transmission of maternal factors to infants via the vaginal, gut, and human milk microbiomes. The colonization of aberrant microorganisms in the mother\u2019s microbiome, influenced by the microbiome-brain-gut axis, may be transferred to infants during a critical early developmental period. This transfer may predispose infants to a more inflammatory-prone microbiome which is associated with dysregulated metabolic process leading to adverse health outcomes. Given the prevalence and potential impact of perinatal stress on maternal and infant health, with no systematic mapping or review of the data to date, the aim of this scoping review is to gather evidence on the relationship between perinatal maternal stress, and the human milk, maternal, and infant gut microbiomes.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec041\">\n<jats:title>Methods<\/jats:title>\n<jats:p>This is an exploratory mapping scoping review, guided by the Joanna Briggs Institute\u2019s methodology along with use of the Prisma Scr reporting guideline. A comprehensive search was conducted using the following databases, CINAHL Complete; MEDLINE; PsycINFO, Web of Science and Scopus with a protocol registered with Open Science Framework DOI 10.17605\/OSF.IO\/5SRMV.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec043\">\n<jats:title>Results<\/jats:title>\n<jats:p>After screening 1145 papers there were 7 paper that met the inclusion criteria. Statistically significant associations were found in five of the studies which identify higher abundance of potentially pathogenic bacteria such as Erwinia, Serratia, T mayombie, Bacteroides with higher maternal stress, and lower levels of stress linked to potentially beneficial bacteria such Lactococcus, Lactobacillus, Akkermansia. However, one study presents conflicting results where it was reported that higher maternal stress was linked to the prevalence of more beneficial bacteria.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec044\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>This review suggests that maternal stress does have an impact on the alteration of abundance and diversity of influential bacteria in the gut microbiome, however, it can affect colonisation in different ways. These bacterial changes have the capacity to influence long term health and disease. The review analyses data collection tools and methods, offers potential reasons for these findings as well as suggestions for future research.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0318237","type":"journal-article","created":{"date-parts":[[2025,2,28]],"date-time":"2025-02-28T18:28:02Z","timestamp":1740767282000},"page":"e0318237","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":8,"title":["The impact of perinatal maternal stress on the maternal and infant gut and human milk microbiomes: A scoping review"],"prefix":"10.1371","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-3101-6251","authenticated-orcid":true,"given":"Niamh","family":"Ryan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siobhain","family":"O\u2019Mahony","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"Leahy-Warren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lloyd","family":"Philpott","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8470-8625","authenticated-orcid":true,"given":"Helen","family":"Mulcahy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2025,2,28]]},"reference":[{"key":"pone.0318237.ref001","author":"World Health Organisation (WHO).","year":"2021"},{"issue":"16","key":"pone.0318237.ref002","doi-asserted-by":"crossref","first-page":"2851","DOI":"10.3390\/ijerph16162851","article-title":"What if pregnancy is not seventh heaven? 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