Fungal Diversity in Homes and Asthma Morbidity Among School-age Children in New York City

Overview

Journal Environ Res

Publisher Elsevier

Specialty Environmental Health

Date 2023 Oct 8

PMID 37806477

Authors

Samuel J Cochran

Luis Acosta

Adnan Divjan

Angela R Lemons

Andrew G Rundle

Rachel L Miller

Edward Sobek

Brett J Green

Matthew S Perzanowski

Karen C Dannemiller

Affiliations

Soon will be listed here.

Abstract

Background: Asthma development has been inversely associated with exposure to fungal diversity. However, the influence of fungi on measures of asthma morbidity is not well understood.

Objectives: This study aimed to test the hypothesis that fungal diversity is inversely associated with neighborhood asthma prevalence and identify specific fungal species associated with asthma morbidity.

Methods: Children aged 7-8 years (n = 347) living in higher (11-18%) and lower (3-9%) asthma prevalence neighborhoods were recruited within an asthma case-control study. Fungal communities were analyzed from floor dust using high-throughput DNA sequencing. A subset of asthmatic children (n = 140) was followed to age 10-11 to determine asthma persistence.

Results: Neighborhood asthma prevalence was inversely associated with fungal species richness (P = 0.010) and Shannon diversity (P = 0.059). Associations between neighborhood asthma prevalence and diversity indices were driven by differences in building type and presence of bedroom carpet. Among children with asthma at age 7-8 years, Shannon fungal diversity was inversely associated with frequent asthma symptoms at that age (OR 0.57, P = 0.025) and with asthma persistence to age 10-11 (OR 0.48, P = 0.043). Analyses of individual fungal species did not show significant associations with asthma outcomes when adjusted for false discovery rates.

Discussion: Lower fungal diversity was associated with asthma symptoms in this urban setting. Individual fungal species associated with asthma morbidity were not detected. Further research is warranted into building type, carpeting, and other environmental characteristics which influence fungal exposures in homes.

Citing Articles

Fungal Spore Richness and Abundance of Allergenic Taxa: Comparing a Portable Impactor and Passive Trap Indoors and Outdoors in an Urban Setting.

Minahan N, Chen C, Chuang Y, Tsai K, Shen W, Guo Y Microb Ecol. 2024; 87(1):45.

PMID: 38393401 PMC: 10891272. DOI: 10.1007/s00248-024-02358-3.

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