Summary of Study ST002552

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 PR001644. The data can be accessed directly via it's Project DOI: 10.21228/M86F07 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.

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Study IDST002552
Study TitleBiomarker discovery in galactosemia: Metabolomics with UPLC/HRMS in dried blood spots
Study TypeNewborn screening
Study SummaryGalactosemia (GAL) is an autosomal recessive genetic disorder characterized by galactose metabolism disturbances. GAL develops non-preventable life-threatening complications even with a reduced content of galactose and lactose patient’s diet. Thus, the underlying pathophysiology of long-term complications in GAL remains poorly understood. The current study used a metabolomics approach using ultra-performance liquid chromatography coupled with high-resolution mass spectrometry to investigate the metabolomic changes in the dried blood spots of 15 patients with GAL and 39 healthy individuals. Compared to the control group, 2,819 metabolites underwent significant changes in patients with GAL. In all, 480 human endogenous metabolites were identified, of which 209 and 271 were upregulated and downregulated, respectively. PA (8:0/LTE4) and ganglioside GT1c (d18:0/20:0) metabolites showed the most significant difference between GAL and the healthy group, with an area under the curve of 1 and 0.995, respectively. Additionally, our findings showed novel potential biomarkers for GAL, such as 17-alpha-estradiol-3-glucuronide and 16-alpha-hydroxy DHEA 3-sulfatediphosphate. In conclusion, this metabolomics study deepened the understanding of the pathophysiology of GAL and presented metabolites that might serve as potential prognostic biomarkers to monitor the progression or support the clinical diagnosis of GAL.
Institute
King Saud University
Last NameAlMalki
First NameReem
AddressKing Fahad road, Riyadh, KSA, 00000, Saudi Arabia
Email439203044@student.ksu.edu.sa
Phone+966534045397
Submit Date2023-03-28
Num Groups2
PublicationsYes
Raw Data AvailableYes
Raw Data File Type(s)raw(Waters)
Analysis Type DetailLC-MS
Release Date2023-04-24
Release Version1
Reem AlMalki Reem AlMalki
https://dx.doi.org/10.21228/M86F07
ftp://www.metabolomicsworkbench.org/Studies/ application/zip

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Sample Preparation:

Sampleprep ID:SP002658
Sampleprep Summary:Metabolites extraction The polar metabolites were extracted from DBS samples using our developed standard protocol (Jacob et al., 2018). Five 3 mm size DBS disks were used for metabolite extraction using methanol, acetonitrile, and water (40:40:20%) for protein precipitation. The mixture was mixed at 25°C and 600 rpm for 2 hours in a thermomixer (Eppendorf, Germany). Pooled QC samples were prepared using aliquots from the study samples. Afterward, the supernatants were transferred to another set of tubes, evaporated in SpeedVacc (Christ, City, Germany), and stored at −80°C until LCMS analysis.
Sampleprep Protocol Filename:Metabolites extraction
Processing Storage Conditions:-20℃
Extract Storage:Room temperature
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