Sand Play - the Effect of Biodiversity Exposure on Atopic Dermatitis

NCT ID: NCT06390696

Last Updated: 2024-04-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-05-26

Study Completion Date

2027-09-30

Brief Summary

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The prevalence of atopic dermatitis has increased along with urbanization and biodiversity loss. According to biodiversity hypothesis, the main reason is urban lifestyle and reduced contact to microbial diversity. Previous studies indicate association between atopic dermatitis and exposure to natural microbes in childhood.

Sand Play - the Effect of Biodiversity Exposure on Atopic Dermatitis will investigate whether the exposure to microbial diversity in sandbox reduces the symptoms of atopic dermatitis, alters commensal microbiota and modifies immune regulation in children.

Detailed Description

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Our specific aims are:

To assess if exposure to microbial diversity reduces Eczema Area and Severity Index (EASI) and Patient-Oriented Eczema Measure (POEM).

Assess whether the sand play alters plasma cytokine profiles, white blood cell distributions, allergy specific IgE, and commensal microbial communities on skin, in saliva and gut.

The investigators will recruit approximately 80 (40 study subjects per treatment) subjects with atopic dermatitis and aged between 2-5.

Conditions

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Atopic Dermatitis Nature, Human Microbial Colonization Immune System and Related Disorders

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Microbial intervention

Children receive an indoor sandbox and cultivation set including soil- and plant-based material with high microbial diversity.

Group Type EXPERIMENTAL

Microbial intervention

Intervention Type BIOLOGICAL

Children in microbial intervention arm receive an indoor sandbox containing play sand enriched with organic leaf compost, moss and humus substances. Families also receive an indoor cultivation set including growing box, seeds, spray bottle, plant lamp and microbe rich growing medium containing organic leaf compost, moss, biochar and humus substances.

placebo

Children receive an indoor sandbox and cultivation set including placebo material with low microbial diversity.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type OTHER

Children in placebo arm receive an indoor sandbox containing visually similar play sand modified with peat with low microbial diversity. Families also receive an indoor cultivation set including growing box, seeds, spray bottle, plant lamp and growing medium containing peat, inorganic fertilizers, and potting gravel with low microbial diversity.

Interventions

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Microbial intervention

Children in microbial intervention arm receive an indoor sandbox containing play sand enriched with organic leaf compost, moss and humus substances. Families also receive an indoor cultivation set including growing box, seeds, spray bottle, plant lamp and microbe rich growing medium containing organic leaf compost, moss, biochar and humus substances.

Intervention Type BIOLOGICAL

Placebo

Children in placebo arm receive an indoor sandbox containing visually similar play sand modified with peat with low microbial diversity. Families also receive an indoor cultivation set including growing box, seeds, spray bottle, plant lamp and growing medium containing peat, inorganic fertilizers, and potting gravel with low microbial diversity.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Eczema Area and Severity Index ≥ 2

Exclusion Criteria

* Eczema Area and Severity Index \< 2
* Immune deficiencies, i.e., antibody deficiency
* Immunosuppressive systematic medications
* A disease affecting immune response (e.g., colitis ulcerosa, rheumatoid arthritis, Crohn's disease, diabetes)
* Cancer diagnosis
* Topical medication for the treatment of atopic dermatitis during the trial
* Disability affecting the immune response (e.g. Down's syndrome)
* Non-participation in the national vaccine program
* Participation in another intervention or follow-up study
Minimum Eligible Age

2 Years

Maximum Eligible Age

5 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Tampere University

OTHER

Sponsor Role collaborator

Natural Resources Institute Finland

OTHER_GOV

Sponsor Role lead

Responsible Party

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Aki Sinkkonen

Lead Researcher

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Aki Sinkkonen

Role: PRINCIPAL_INVESTIGATOR

Natural Resources Institute Finland

Locations

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Natural Resources Institute Finland

Helsinki, Uusimaa, Finland

Site Status RECRUITING

Tampere University

Tampere, , Finland

Site Status RECRUITING

Countries

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Finland

Central Contacts

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Sanna Hurtola

Role: CONTACT

+358295322500

Facility Contacts

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Marja Roslund

Role: primary

+358295322256

Laura Kummola, Phd

Role: primary

Other Identifiers

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R22127

Identifier Type: -

Identifier Source: org_study_id

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