Indoor green wall affects health-associated commensal skin microbiota and enhances immune regulation: a randomized trial among urban office workers

Cerrone, Damiano; Grönroos, Mira; Luukkonen, Anna; Mäkelä, Iida; Nurminen, Noora; Oikarinen, Sami; Hui, Nan; Puhakka, Riikka; Roslund, Marja I.; Saarenpää, Mika; Soininen, Laura; Sun, Yan; Vari, Heli K.; Laitinen, Olli H.; Rajaniemi, Juho; Hyöty, Heikki; Sinkkonen, Aki

doi:10.1038/s41598-022-10432-4

Cited by 35 publications

(28 citation statements)

References 66 publications

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“…In Finland, improved contact with natural elements in the day care yard enriched the human microbiota in 4 weeks having a favorable effect on immunological markers 46 . A 2 weeks indoor exposure to green walls had also a positive effect 50 . Recent observations from Italy indicate that low environmental vegetation index is a risk factor for uncontrolled asthma in children 58 .…”

Section: Discussionmentioning

confidence: 99%

“…Urban greening is an important trend also indoors. Recently, a 2 weeks controlled intervention showed that indoor green walls influenced on skin bacterial richness and diversity as well as on the immune balance 50 …”

Section: Natural Elements Back To Everyday Lifementioning

confidence: 99%

“…Recently, a 2 weeks controlled intervention showed that indoor green walls influenced on skin bacterial richness and diversity as well as on the immune balance. 50 Although the studies mentioned are promising in indicating that human microbiome and immune balance can shaped in a relatively short period of time, the question remains: do the interventions truly prevent from symptoms or disease?…”

Section: Natur Al Elements Back To E Veryday Lifementioning

confidence: 99%

“…46 A 2 weeks indoor exposure to green walls had also a positive effect. 50 Recent observations from Italy indicate that low environmental vegetation index is a risk factor for uncontrolled asthma in children. 58 Thus, enrichment of the vegetation may have F I G U R E 3 Urban, build environment, and changes in lifestyle (left) have increasingly disconnected children from the natural air, soil, and waters, the evolutionary home of Homo sapiens (right) (modified).…”

Section: A Real-world Public Health Interventionmentioning

confidence: 99%

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Biodiversity for resilience—What is needed for allergic children

Haahtela

2022

Pediatric Allergy Immunology

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What is needed for our children facing unprecedented challenges of modern time? Biodiversity, both for immunological and psychological well‐being and resilience. That is also the keyword for the children with allergies and asthma. The cultural evolution with advanced technology and medicine along with major move to urban environment has profoundly changed our lifestyle and surroundings. We are increasingly disconnected from our evolutionary home, soil, natural waters, and air we used to breathe. The ecosystem of human body and mind has been tested, survived, and evolved closely in relation with other ecosystems. For balance and tolerance, immune regulatory circuits need training by microbes, biogenic chemicals, and close relation to natural environment throughout life. This is addressed by the biodiversity hypothesis of tolerance/resilience for health, supported by the pioneering real‐world interventions and a few controlled studies. No need to go “back to nature,” but we must take natural elements back to our everyday life to breathe, eat, drink, and touch. The change for better is plausible and cost‐effective, as shown by the Finnish and other European initiatives, but needs contribution of the whole society.

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Section: Discussionmentioning

confidence: 99%

Section: Natural Elements Back To Everyday Lifementioning

confidence: 99%

Section: Natur Al Elements Back To E Veryday Lifementioning

confidence: 99%

Section: A Real-world Public Health Interventionmentioning

confidence: 99%

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Biodiversity for resilience—What is needed for allergic children

Haahtela

2022

Pediatric Allergy Immunology

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“…Living walls are designed for providing an aesthetic focal point of an indoor space, at the same time, provide additional benefits such as air purification, healthy skin microbiota, or thermal regulation [15].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Indoor Living Wall Effects Using an Evapotranspiration Model in Hygroscopic Porous Medium

Moosavi

Lin

Zhu

et al. 2022

Preprint

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The potential effect of a living wall on the indoor temperature and humidity of a room is numerically modeled and investigated through a novel approach. The studied room has a dimension of \(10 m\times 6 m\times 3 m\) with part of the wall areas covered by a living wall. The water transportation process in the active living wall, which is composed of transpiration from leaves and evaporation from potting media, was simulated as evaporation from a hygroscopic porous medium material. The governing equations of fluid flow, moisture transport, and heat transfer were solved simultaneously. The Navier–Stokes equations were used for fluid flow fields for the convective transport and Brinkman and Darcy’s law for single and multiphase flow in porous media. The inlet conditions are the ambient temperature of 298 K, the humidity of 10% and 40%, with the mass flux set at 0.01–0.16 kg/m2.s and the inlet velocity set at 0.1–1.5 m/s. The results revealed that an active living wall can improve the comfort conditions of the indoor environment, with relative humidity up to 75% and decreased temperature up to 5 K degrees. In addition, results showed that increasing the percentage of plant leaf cover to the total surface (1–100%) significantly increased relative humidity and reduced room temperature.

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Prenatal household size and composition are associated with infant fecal bacterial diversity in Cebu, Philippines

Manus

Watson

Kuthyar

et al. 2023

American Journal of Biological Anthropology

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Objectives The gut microbiome (GM) connects physical and social environments to infant health. Since the infant GM affects immune system development, there is interest in understanding how infants acquire microbes from mothers and other household members. Materials and Methods As a part of the Cebu Longitudinal Health and Nutrition Survey (CLHNS), we paired fecal samples (proxy for the GM) collected from infants living in Metro Cebu, Philippines at 2 weeks (N = 39) and 6 months (N = 36) with maternal interviews about prenatal household composition. We hypothesized that relationships between prenatal household size and composition and infant GM bacterial diversity (as measured in fecal samples) would vary by infant age, as well as by household member age and sex. We also hypothesized that infant GM bacterial abundances would differ by prenatal household size and composition. Results Data from 16 S rRNA bacterial gene sequencing show that prenatal household size was the most precise estimator of infant GM bacterial diversity, and that the direction of the association between this variable and infant GM bacterial diversity changed between the two time points. The abundances of bacterial families in the infant GM varied by prenatal household variables. Conclusions Results highlight the contributions of various household sources to the bacterial diversity of the infant GM, and suggest that prenatal household size is a useful measure for estimating infant GM bacterial diversity in this cohort. Future research should measure the effect of specific sources of household bacterial exposures, including social interactions with caregivers, on the infant GM.

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Indoor green wall affects health-associated commensal skin microbiota and enhances immune regulation: a randomized trial among urban office workers

Cited by 35 publications

References 66 publications

Biodiversity for resilience—What is needed for allergic children

Biodiversity for resilience—What is needed for allergic children

Numerical Simulation of Indoor Living Wall Effects Using an Evapotranspiration Model in Hygroscopic Porous Medium

Prenatal household size and composition are associated with infant fecal bacterial diversity in Cebu, Philippines

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