Short-Term Passive Greenspace Exposures Have Little Effect on Nasal Microbiomes: A Cross-Over Exposure Study of a Māori Cohort

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aut.relation.articlenumber118814
aut.relation.issuePt 1
aut.relation.journalEnvironmental Research
aut.relation.startpage118814
aut.relation.volume252
dc.contributor.authorBrame, Joel E
dc.contributor.authorWarbrick, Isaac
dc.contributor.authorHeke, Deborah
dc.contributor.authorLiddicoat, Craig
dc.contributor.authorBreed, Martin F
dc.date.accessioned2024-11-12T01:43:41Z
dc.date.available2024-11-12T01:43:41Z
dc.date.issued2024-03-28
dc.description.abstractIndigenous health interventions have emerged in New Zealand aimed at increasing people's interactions with and exposure to macro and microbial diversity. Urban greenspaces provide opportunities for people to gain such exposures. However, the dynamics and pathways of microbial transfer from natural environments onto a person remain poorly understood. Here, we analysed bacterial 16S rRNA amplicons in air samples (n = 7) and pre- and post-exposure nasal samples (n = 238) from 35 participants who had 30-min exposures in an outdoor park. The participants were organised into two groups: over eight days each group had two outdoor park exposures and two indoor office exposures, with a cross-over study design and washout days between exposure days. We investigated the effects of participant group, location (outdoor park vs. indoor office), and exposures (pre vs. post) on the nasal bacterial community composition and three key suspected health-associated bacterial indicators (alpha diversity, generic diversity of Gammaproteobacteria, and read abundances of butyrate-producing bacteria). The participants had distinct nasal bacterial communities, but these communities did not display notable shifts in composition following exposures. The community composition and key health bacterial indicators were stable throughout the trial period, with no clear or consistent effects of group, location, or exposure. We conclude that 30-min exposure periods to urban greenspaces are unlikely to create notable changes in the nasal microbiome of visitors, which contrasts with previous research. Our results suggest that longer exposures or activities that involves closer interaction with microbial rich ecological components (e.g., soil) are required for greenspace exposures to result in noteworthy changes in the nasal microbiome.
dc.identifier.citationEnvironmental Research, ISSN: 0013-9351 (Print); 1096-0953 (Online), Elsevier, 252(Pt 1), 118814-. doi: 10.1016/j.envres.2024.118814
dc.identifier.doi10.1016/j.envres.2024.118814
dc.identifier.issn0013-9351
dc.identifier.issn1096-0953
dc.identifier.urihttp://hdl.handle.net/10292/18289
dc.languageeng
dc.publisherElsevier
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0013935124007187
dc.rights/© 2024 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.accessrightsOpenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAerobiome
dc.subjectMicrobial ecology
dc.subjectMicrobiome
dc.subjectNasal microbiome
dc.subjectUrban greenspaces
dc.subjectAerobiome
dc.subjectMicrobial ecology
dc.subjectMicrobiome
dc.subjectNasal microbiome
dc.subjectUrban greenspaces
dc.subject3107 Microbiology
dc.subject31 Biological Sciences
dc.subjectClinical Trials and Supportive Activities
dc.subjectHealth Effects of Indoor Air Pollution
dc.subjectClinical Research
dc.subjectPrevention
dc.subjectSocial Determinants of Health
dc.subjectMicrobiome
dc.subject2.2 Factors relating to the physical environment
dc.subject03 Chemical Sciences
dc.subject05 Environmental Sciences
dc.subject06 Biological Sciences
dc.subjectToxicology
dc.subject31 Biological sciences
dc.subject34 Chemical sciences
dc.subject41 Environmental sciences
dc.subject.meshAdult
dc.subject.meshFemale
dc.subject.meshHumans
dc.subject.meshMale
dc.subject.meshMiddle Aged
dc.subject.meshYoung Adult
dc.subject.meshAir Microbiology
dc.subject.meshAir Pollutants
dc.subject.meshBacteria
dc.subject.meshCohort Studies
dc.subject.meshCross-Over Studies
dc.subject.meshEnvironmental Exposure
dc.subject.meshMaori People
dc.subject.meshMicrobiota
dc.subject.meshNew Zealand
dc.subject.meshNose
dc.subject.meshParks, Recreational
dc.subject.meshRNA, Ribosomal, 16S
dc.subject.meshNose
dc.subject.meshHumans
dc.subject.meshBacteria
dc.subject.meshRNA, Ribosomal, 16S
dc.subject.meshAir Pollutants
dc.subject.meshCohort Studies
dc.subject.meshCross-Over Studies
dc.subject.meshAir Microbiology
dc.subject.meshEnvironmental Exposure
dc.subject.meshAdult
dc.subject.meshMiddle Aged
dc.subject.meshNew Zealand
dc.subject.meshFemale
dc.subject.meshMale
dc.subject.meshYoung Adult
dc.subject.meshMicrobiota
dc.subject.meshParks, Recreational
dc.subject.meshMaori People
dc.subject.meshAdult
dc.subject.meshFemale
dc.subject.meshHumans
dc.subject.meshMale
dc.subject.meshMiddle Aged
dc.subject.meshYoung Adult
dc.subject.meshAir Microbiology
dc.subject.meshAir Pollutants
dc.subject.meshBacteria
dc.subject.meshCohort Studies
dc.subject.meshCross-Over Studies
dc.subject.meshEnvironmental Exposure
dc.subject.meshMaori People
dc.subject.meshMicrobiota
dc.subject.meshNew Zealand
dc.subject.meshNose
dc.subject.meshParks, Recreational
dc.subject.meshRNA, Ribosomal, 16S
dc.titleShort-Term Passive Greenspace Exposures Have Little Effect on Nasal Microbiomes: A Cross-Over Exposure Study of a Māori Cohort
dc.typeJournal Article
pubs.elements-id543474
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