Abstract | BACKGROUND:
Obesity is a common comorbid condition in adult asthmatics and known as a feature of asthma severity. However, the molecular mechanism under obesity-induced inflammation has not yet been fully understood. OBJECTIVE: Considering the essential role of hydrophobic surfactant protein B (SP-B) in lung function, SP-B was targeted to examine its involvement in the development of obesity-induced airway inflammation in asthmatics. METHODS: The aim was to examine an alteration in circulating SP-B according to obesity in adult asthmatics, 129 asthmatics were enrolled and classified into 3 groups (obese, overweight and normal-weight groups) according to body mass index (BMI). Circulating SP-B levels were determined by enzyme-linked immunosorbent assay. Four single nucleotide polymorphisms of SFTPB gene were genotyped. Serum ceramide levels were measured by liquid chromatography-tandem mass spectrometry. RESULTS: Significantly lower serum SP-B levels were noted in the obese group than in the overweight or normal-weight group (p = .002). The serum SP-B level was significantly correlated with serum levels of C18:0 ceramide and transforming growth factor beta 1 as well as BMI (r = -0.200; r = -0.215; r = -0.332, p < .050 for all). An inverse correlation was noted between serum SP-B and fractional exhaled nitric oxide levels in female asthmatics (r = -0.287, p = .009). Genetic predisposition of the SFTPB gene at 9306 A>G to the obese and overweight groups was noted. CONCLUSION:
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Authors | Thi Bich Tra Cao, Ji-Young Moon, Hyun-Ju Yoo, Ga-Young Ban, Seung-Hyun Kim, Hae-Sim Park |
Journal | Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology
(Clin Exp Allergy)
Vol. 52
Issue 11
Pg. 1321-1329
(11 2022)
ISSN: 1365-2222 [Electronic] England |
PMID | 35294785
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | © 2022 John Wiley & Sons Ltd. |
Chemical References |
- IgA receptor
- Ceramides
- Transforming Growth Factor beta
- Surface-Active Agents
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Topics |
- Female
- Humans
- Overweight
- Asthma
(diagnosis, genetics)
- Obesity
(complications)
- Inflammation
- Ceramides
- Transforming Growth Factor beta
- Surface-Active Agents
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