Summary of Study ST002697

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 PR001669. The data can be accessed directly via it's Project DOI: 10.21228/M8ZQ5Q 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 IDST002697
Study TitleEmploying Hindlimb Unloading Model for The Identification of Serum Biomarkers Associated with Cardiovascular and Skeletal Muscle Deconditioning.
Study SummaryMicrogravity and prolonged periods of inactivity cause a variety of diseases, including skeletal muscle mass loss and weakening as well as cardiovascular deconditioning. The primary causes of the inadequate preventative measures for these deconditionings are the lack of biomarkers and unknown underlying mechanisms of cardiovascular and skeletal muscle deconditioning in these conditions. Here, we used a hindlimb unloading (HU) mouse model that replicates astronauts in space and bedridden patients to first evaluate cardiovascular and skeletal muscle performance. Serum samples from these mice were used to identify new biomarkers using metabolomic and proteomic approaches. Three weeks of unloading resulted in alterations in cardiovascular system function in C57/Bl6 mice, as measured by changes in mean arterial pressure and heart weight. Unloading for three weeks also altered skeletal muscle function, resulting in a decrease of grip strength in HU mice, as well as skeletal muscle atrophy, as shown by a drop in muscle mass. A two-week recovery time from the unloading condition partially reversed these alterations, stressing the importance of the recovery process.
Sharjah Institute for Medical Research
Last NameFacility
First NameCore
AddressM32, SIMR, College of Pharmacy, Health Sciences, University of Sharjah, Sharjah, UAE, Sharjah, 000, United Arab Emirates
Phone+971 6 5057656
Submit Date2023-05-02
Raw Data AvailableYes
Raw Data File Type(s)d
Analysis Type DetailLC-MS
Release Date2023-06-02
Release Version1
Core Facility Core Facility application/zip

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Combined analysis:

Analysis ID AN004371
Analysis type MS
Chromatography type Reversed phase
Chromatography system Bruker Elute
Column Hamilton Intensity Solo 2 C18 (100 x 2.1 mm, 1.8 um)
MS instrument type QTOF
MS instrument name Bruker timsTOF
Units AU


Chromatography ID:CH003277
Chromatography Summary:Samples were chromatographically separated by inline reversed-phase chromatography using the Elute HPG 1300 pumps and Elute Autosampler (Bruker, Darmstadt, Germany) with solvent A 0.1% FA in HPLC grade water and solvent B 0.1% FA in ACN. A Hamilton Intensity Solo 2 C18 column (100 mm x 2.1 mm, 1.8µm beads) was maintained at 35C. For metabolomics, 10 µL was injected twice for each sample and eluted using a 30-minute gradient as follows: 1% ACN was held for 2 minutes, ramping to 99% ACN over 15 minutes, held at 99% ACN for 3 minutes before re-equilibrating to 1% ACN for 10 minutes. Flow rates were 250 µL/min for elution and 350 µL/min for re-equilibration.
Instrument Name:Bruker Elute
Column Name:Hamilton Intensity Solo 2 C18 (100 x 2.1 mm, 1.8 um)
Column Temperature:35
Flow Gradient:1%B to 99%B in 15 min
Flow Rate:250 uL/min
Solvent A:Water (0.1% Formic Acid)
Solvent B:ACN (0.1% Formic Acid)
Chromatography Type:Reversed phase