Journal article
Differences in L-arginine metabolism and asthma morbidity among asthma patients with and without obstructive sleep apnea
Respiratory research, Vol.23(1), pp.230-8
09/05/2022
DOI: 10.1186/s12931-022-02157-9
PMCID: PMC9442950
PMID: 36064404
Abstract
Imbalance in L-arginine and nitric oxide (NO) metabolism has been implicated in the pathophysiology of asthma and obstructive sleep apnea (OSA), and both diseases impact the other's morbidity. We sought to determine whether L-arginine/NO metabolism differs between adults with asthma with or without comorbid OSA, and its association with asthma morbidity.
This is a cross-sectional study of 322 adults with asthma recruited in Denver, CO and New York City, NY. Data were collected on OSA status, spirometry, and metrics of asthma control and morbidity. L-Arginine metabolites were quantified in patient serum. Bivariate analyses and multiple regression were performed to determine differences between L-arginine metabolism, OSA and association with asthma morbidity.
Among the 322 participants, 92 (28.5%) had OSA. The cohort was 81.6% female, 23.4% identified as Black and 30.6% as Latino. Patients with asthma and OSA had significantly higher serum concentrations of NO synthase inhibitor asymmetric dimethylarginine (ADMA) (p-value = 0.019), lower L-arginine to ornithine ratios (p-value = 0.003), and increased ornithine (p-value = 0.001) and proline levels (p-value < 0.001) compared to those without OSA. In adjusted models, OSA was associated with worse asthma control, adjusted mean difference in asthma control questionnaire of 0.36 (95% confidence interval [CI]: 0.06 to 0.65), and asthma quality of life questionnaire, adjusted mean difference: - 0.53 (95% CI: - 0.85 to - 0.21), after adjusting for relevant covariates including body mass index and L-arginine metabolites.
Adults with asthma and OSA had increased ADMA, an inhibitor of nitric oxide synthase, and greater metabolism of L-arginine via the arginase pathway compared to those with asthma alone, indicating a possible shared pathophysiological mechanism of these diseases.
Details
- Title: Subtitle
- Differences in L-arginine metabolism and asthma morbidity among asthma patients with and without obstructive sleep apnea
- Creators
- Meghan D Althoff - University of Colorado Anschutz Medical CampusGuillermo Jimenez - Department of Medicine, University of Colorado Anschutz School of Medicine, Aurora, CO, USARyan Peterson - Colorado School of Public HealthYing Jin - Colorado School of Public HealthHartmut Grasemann - Hospital for Sick ChildrenSunita Sharma - University of Colorado Anschutz Medical CampusAlex D Federman - Icahn School of Medicine at Mount SinaiJuan P Wisnivesky - Icahn School of Medicine at Mount SinaiFernando Holguin - University of Colorado Anschutz Medical Campus
- Resource Type
- Journal article
- Publication Details
- Respiratory research, Vol.23(1), pp.230-8
- DOI
- 10.1186/s12931-022-02157-9
- PMID
- 36064404
- PMCID
- PMC9442950
- NLM abbreviation
- Respir Res
- ISSN
- 1465-993X
- eISSN
- 1465-993X
- Grant note
- T32 HL007085-46 / NHLBI NIH HHS R01 HL129198 / NHLBI NIH HHS T32 HL007085 / NHLBI NIH HHS R01 HL129198-01A1 / NHLBI NIH HHS
- Language
- English
- Date published
- 09/05/2022
- Academic Unit
- Biostatistics; Internal Medicine
- Record Identifier
- 9984914148002771
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