Journal
CLINICAL IMMUNOLOGY
Volume 229, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.clim.2021.108715
Keywords
Obesity; Asthma; Non-allergic asthma; Tumour necrosis factor-alpha; IL-17A; RORC
Categories
Funding
- Mexican government for the Children's Hospital of Mexico Federico Gomez [HIM/2013/015, SSa.1601]
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Obesity is associated with a unique non-T2 asthma phenotype characterized by a Th17 immune response. RORC mRNA expression levels were found to be the best biomarker for discriminating non-allergic asthma among obese adolescents, hinting at a potential therapeutic target in obesity-related asthma. The NAO group exhibited higher TNFA mRNA expression levels as well as the highest IL17A and RORC mRNA expression levels among the different groups studied.
Obesity is associated with a unique non-T2 asthma phenotype, characterised by a Th17 immune response. Retinoid-related orphan receptor C (RORC) is the master transcription factor for Th17 polarisation. We investigated the association of TNFA, IL17A, and RORC mRNA expression levels with the non-T2 phenotype. We conducted a cross-sectional study in adolescents, subdivided as follows: healthy (HA), allergic asthma without obesity (AA), obesity without asthma (OB), and non-allergic asthma with obesity (NAO). TNFA, IL17A, and RORC mRNA expression in peripheral blood leukocytes were assessed by RT-PCR. NAO exhibited higher TNFA mRNA expression levels than HA or OB, as well as the highest IL17A and RORC mRNA expression levels among the four groups. The best biomarker for discriminating non-allergic asthma among obese adolescents was RORC mRNA expression levels (area under the curve: 0.95). RORC mRNA expression levels were associated with the non-T2 asthma phenotype, hinting at a therapeutic target in obesity-related asthma.
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