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Farm-like indoor microbiota in non-farm homes protects children from asthma development

Open access
Kirjavainen, Pirkka V., Karvonen, Anne M., Adams, Rachel I., Täubel, Martin, Roponen, Marjut, Tuoresmäki, Pauli, Loss, Georg, Jayaprakash, Balamuralikrishna, Depner, Martin, Ege, Markus Johannes, Renz, Harald, Pfefferle, Petra Ina, Schaub, Bianca, Lauener, Roger, Hyvärinen, Anne, Knight, Rob, Heederik, Dick J. J., von Mutius, Erika, Pekkanen, Juha·2019·Nature Medicine

Abstract

Asthma prevalence has increased in epidemic proportions with urbanization, but growing up on traditional farms offers protection even today1. The asthma-protective effect of farms appears to be associated with rich home dust microbiota2,3, which could be used to model a health-promoting indoor microbiome. Here we show by modeling differences in house dust microbiota composition between farm and non-farm homes of Finnish birth cohorts4 that in children who grow up in non-farm homes, asthma risk decreases as the similarity of their home bacterial microbiota composition to that of farm homes increases. The protective microbiota had a low abundance of Streptococcaceae relative to outdoor-associated bacterial taxa. The protective effect was independent of richness and total bacterial load and was associated with reduced proinflammatory cytokine responses against bacterial cell wall components ex vivo. We were able to reproduce these findings in a study among rural German children2 and showed that children living in German non-farm homes with an indoor microbiota more similar to Finnish farm homes have decreased asthma risk. The indoor dust microbiota composition appears to be a definable, reproducible predictor of asthma risk and a potential modifiable target for asthma prevention. Exposure to a farm-like house dust microbiome is associated with protection against asthma development in children living in urban environments.

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Metadata

Authors
Kirjavainen, P. V., Karvonen, A. M., Adams, R. I., Täubel, M., Roponen, M., Tuoresmäki, P., Loss, G., Jayaprakash, B., Depner, M., Ege, M. J., Renz, H., Pfefferle, P. I., Schaub, B., Lauener, R., Hyvärinen, A., Knight, R., Heederik, D. J. J., von Mutius, E., & Pekkanen, J.
Venue
Nature Medicine
Published
2019-06-17
Volume
25
Issue
7
Pages
1089-1095
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2949675525
Cited by
323
References
54
FWCI
25.57
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Farm-like indoor microbiota in non-farm homes protects children from asthma development. https://app.cochat.ai/papers/10.1038/s41591-019-0469-4
The paper
Kirjavainen, P. V., Karvonen, A. M., Adams, R. I., Täubel, M., Roponen, M., Tuoresmäki, P., Loss, G., Jayaprakash, B., Depner, M., Ege, M. J., Renz, H., Pfefferle, P. I., Schaub, B., Lauener, R., Hyvärinen, A., Knight, R., Heederik, D. J. J., von Mutius, E., & Pekkanen, J. (2019). Farm-like indoor microbiota in non-farm homes protects children from asthma development. Nature Medicine. https://doi.org/10.1038/s41591-019-0469-4

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.