Summary of Study ST003177

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001976. The data can be accessed directly via it's Project DOI: 10.21228/M89J06 This work is supported by NIH grant, U2C- DK119886.

See: https://www.metabolomicsworkbench.org/about/howtocite.php

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.

Study ID	ST003177
Study Title	A Longitudinal Study in Rheumatoid Arthritis Unveils Metabolomic Biomarkers Preceding Clinical Onset, Assessing Disease Severity, and Anticipating Treatment Response to csDMARDs
Study Summary	Rheumatoid arthritis (RA) is a bundle of systemic inflammatory diseases mainly affecting the joints, complicating the identification of biomarkers for early diagnosis, predicting disease progress and therapeutic outcomes. This study scrutinizes a longitudinal cohort of RA, inclusive of follow-ups, alongside OA, UA and ACPA/RF-RA and healthy controls, aiming to discover plasma metabolic markers that can precede RA onset, assess disease activity, and forecast treatment efficacy. Our investigation revealed substantial metabolic alterations at both the pathway and individual metabolite levels across RA, at-risk or RA and healthy control. The drug response predictive models constructed on critical differential metaboites showed optimal performance. Additionally, our longitudinal data sheds light on the molecular impacts on metabolism of csDMARDs in RA.
Institute	West China Hospital of Sichuan University
Last Name	Zhu
First Name	Chenxi
Address	West China Hospital, Sichuan University, 37# Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Email	chenxizhu1995@gmail.com
Phone	+8615026603760
Submit Date	2024-04-12
Raw Data Available	Yes
Raw Data File Type(s)	mzML
Analysis Type Detail	LC-MS
Release Date	2024-05-11
Release Version	1

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Sample Preparation:

Sampleprep ID:	SP003303
Sampleprep Summary:	The plasma samples were thawed by transferring them from -80°C to a 4°C refrigerator. Then, take out 50 μL of the plasma sample into another tube after vortex mixing and added to 250 μL of pre-cooled Spike MeOH containing isotopic chemicals (120.89 μM 13C6-D-glucose, 23.12 mM 13C5-L-glutamate-15N). The mixture was thoroughly mixed by vortexing at 1500 rpm for 2 minutes at 4°C. The mixture was then placed in a -20°C refrigerator and allowed to stand for 30 minutes. Afterward, ultrasonication was performed in an ice-water bath for 10 minutes. Following ultrasonication, the mixture was centrifuged at 13,000 rpm for 20 minutes at 4°C. 20 μL of each sample from every batch was extracted from the tube and mixed for QC analysis using mass spectrometry (MS). The 150ul remaining extract was concentrated, vacuum dried, and stored at -80°C.

Sampleprep ID:

SP003303

Sampleprep Summary:

The plasma samples were thawed by transferring them from -80°C to a 4°C refrigerator. Then, take out 50 μL of the plasma sample into another tube after vortex mixing and added to 250 μL of pre-cooled Spike MeOH containing isotopic chemicals (120.89 μM 13C6-D-glucose, 23.12 mM 13C5-L-glutamate-15N). The mixture was thoroughly mixed by vortexing at 1500 rpm for 2 minutes at 4°C. The mixture was then placed in a -20°C refrigerator and allowed to stand for 30 minutes. Afterward, ultrasonication was performed in an ice-water bath for 10 minutes. Following ultrasonication, the mixture was centrifuged at 13,000 rpm for 20 minutes at 4°C. 20 μL of each sample from every batch was extracted from the tube and mixed for QC analysis using mass spectrometry (MS). The 150ul remaining extract was concentrated, vacuum dried, and stored at -80°C.