Summary of Study ST002251

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench,, where it has been assigned Project ID PR001439. The data can be accessed directly via it's Project DOI: 10.21228/M8QD9Z This work is supported by NIH grant, U2C- DK119886.


This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.

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Study IDST002251
Study TitleUntargeted metabolomics on plasma from children with asthma, comparing exacerbation-prone to non-exacerbation-prone
Study TypeUntargeted MS
Study SummaryBackground: Some children with asthma remain poorly controlled and have recurrent exacerbations despite treatment with inhaled corticosteroids. Aside from prior exacerbations, there are currently no reliable predictors of exacerbation-prone asthma in these children and limited understanding of potential underlying mechanisms. Objective: We sought to quantify small molecules in the plasma of children with exacerbation- prone asthma through mass spectrometry-based metabolomics. We hypothesized that the plasma metabolome of these children would differ from that of children with non-exacerbation- prone asthma. Methods: Plasma metabolites were extracted from four pediatric asthma cohorts (n=215 total, n=41 with exacerbation-prone asthma) and detected using a ZIC-HILIC column coupled to a Q Exactive HF mass spectrometer. High-confidence annotations were retained for univariate analysis and were confirmed by a sensitivity analysis in subjects on high-dose inhaled corticosteroids. Metabolites that varied by cohort were excluded. Metaboanalyst was used to identify pathways of interest. Concentrations were calculated by reference standardization to NIST SRM 1950. Results: We identified 32 unique, cohort-independent metabolites that differed in children with exacerbation-prone asthma compared to children with non-exacerbation-prone asthma. Comparison of metabolite concentrations to literature-reported values for healthy children revealed that most metabolites were decreased in both asthma groups, but more so in exacerbation-prone asthma. Pathway analysis identified arginine, lysine, and methionine pathways as most impacted. Conclusions: Several plasma metabolites are perturbed in children with exacerbation-prone asthma and are largely related to arginine, lysine, and methionine pathways. While validation is needed, plasma metabolites may be potential biomarkers for exacerbation-prone asthma in children.
Emory University
LaboratoryJoshua Chandler, PhD
Last NameChandler
First NameJoshua
Address2015 Upper Gate Drive NE, Atlanta, GA 30322
Submit Date2022-07-25
Num Groups2
Total Subjects215
Num Males135
Num Females80
Raw Data AvailableYes
Raw Data File Type(s)mzML
Analysis Type DetailLC-MS
Release Date2023-01-02
Release Version1
Joshua Chandler Joshua Chandler application/zip

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Collection ID:CO002330
Collection Summary:Patients were not fasted prior to blood collection, but did withhold controller medication for 24 hours prior to blood collection. Blood was collected via venipuncture into EDTA-coated tubes. Plasma was isolated via centrifugation and stored at -80 *C.
Sample Type:Blood (plasma)
Storage Conditions:-80℃
Collection Vials:EDTA-coated tubes
Storage Vials:Eppendorf tubes
Collection Tube Temp:Room temperature