A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dibutyl phthalate exposure alters T‐cell subsets in blood from allergen‐sensitized volunteers
Phthalates are ubiquitous environmental contaminants associated with allergic disease in epidemiological and animal studies. This investigation aims to support these associations by interrogating systemic immune effects in allergen‐sensitized volunteers after controlled indoor air exposure to a known concentration of dibutyl phthalate (DBP). The phthalate‐allergen immune response (PAIR) study enrolled 16 allergen‐sensitized participants to a double‐blinded, randomized, crossover exposure to two conditions (DBP or control air for 3 hr), each followed immediately by inhaled allergen challenge. Peripheral blood immune cell composition and activation along with inflammatory mediators were measured before and after exposure. DBP exposure prior to the inhaled allergen challenge increased the percentage of CD4+ T helper cells and decreased the percentage of regulatory T cells (3 hr and 20 hr post‐exposure), while only modest overall effects were observed for inflammatory mediators. The cells and mediators affected by the phthalate exposure were generally not overlapping with the endpoints affected by allergen inhalation alone. Thus, in distinction to our previously published effects on lung function, DBP appears to alter endpoints in peripheral blood that are not necessarily enhanced by allergen alone. Further studies are needed to clarify the role of phthalate‐induced systemic effects in disease pathogenesis.
Dibutyl phthalate exposure alters T‐cell subsets in blood from allergen‐sensitized volunteers
Phthalates are ubiquitous environmental contaminants associated with allergic disease in epidemiological and animal studies. This investigation aims to support these associations by interrogating systemic immune effects in allergen‐sensitized volunteers after controlled indoor air exposure to a known concentration of dibutyl phthalate (DBP). The phthalate‐allergen immune response (PAIR) study enrolled 16 allergen‐sensitized participants to a double‐blinded, randomized, crossover exposure to two conditions (DBP or control air for 3 hr), each followed immediately by inhaled allergen challenge. Peripheral blood immune cell composition and activation along with inflammatory mediators were measured before and after exposure. DBP exposure prior to the inhaled allergen challenge increased the percentage of CD4+ T helper cells and decreased the percentage of regulatory T cells (3 hr and 20 hr post‐exposure), while only modest overall effects were observed for inflammatory mediators. The cells and mediators affected by the phthalate exposure were generally not overlapping with the endpoints affected by allergen inhalation alone. Thus, in distinction to our previously published effects on lung function, DBP appears to alter endpoints in peripheral blood that are not necessarily enhanced by allergen alone. Further studies are needed to clarify the role of phthalate‐induced systemic effects in disease pathogenesis.
Dibutyl phthalate exposure alters T‐cell subsets in blood from allergen‐sensitized volunteers
Maestre‐Batlle, Danay (author) / Nygaard, Unni C. (author) / Huff, Ryan D. (author) / Alexis, Neil E. (author) / Tebbutt, Scott J. (author) / Turvey, Stuart E. (author) / Carlsten, Christopher (author) / Kocbach Bølling, Anette (author)
Indoor Air ; 32
2022-04-01
12 pages
Article (Journal)
Electronic Resource
English
Biochemical Responses of Two Typical Duckweeds Exposed to Dibutyl Phthalate
| Online Contents | 2006
Dibutyl phthalate adsorption characteristics using three common substrates in aqueous solutions
| Springer Verlag | 2019
Paternal preconception phthalate exposure alters sperm methylome and embryonic programming
| DOAJ | 2021