Summary of Study ST002794

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 PR001742. The data can be accessed directly via it's Project DOI: 10.21228/M8J71N 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	ST002794
Study Title	Metabolomics Study on Plasma and Lung Tissue of Rats Exposed to Whole Thorax Irradiation.
Study Summary	Although some progress has been made in the study of radiation injury, there are still no effective prevention and treatment methods for severe acute radiation syndrome or sickness (ARS). Accordingly, a thorough understanding of biological characteristics associated with high-dose radiation is essential for revealing the mechanisms underlying the varied biological processes following high dose radiation and the development of novel potent radioprotective agents. In present study, plasma metabolic characteristics were investigated from patients of hematopoietic stem cell transplantation following high-dose TBI pretreatment utilizing gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). The most potential panel of four metabolic markers for radiation injury was selected and the metabolic disorders involved were explored. The metabolic disorders implied the dysregulation of gut microflora, shift of energy supply from aerobic respiration to ketogenesis, protein synthesis and metabolism in response to TBI. Although similar metabolic alternation patterns exist between male and female following high-dose irradiation, specific changes are observed in either male or female patients. These findings provide valuable information for further selecting biomarkers, clues of pathogenic mechanisms involved in high-dose radiation exposure.
Institute	Soochow University
Last Name	Wang
First Name	Chang
Address	Suzhou, No. 199, Renai Road, Suzhou Industrial Park
Email	wangchang@suda.edu.cn
Phone	+8651265880067
Submit Date	2023-07-18
Raw Data Available	Yes
Raw Data File Type(s)	raw(Thermo)
Analysis Type Detail	LC-MS
Release Date	2023-08-10
Release Version	1

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Sample Preparation:

Sampleprep ID:	SP002907
Sampleprep Summary:	Plasma：Add 200 μL ice acetonitrile containing internal standard (internal standard and its concentration are shown in Table 1-3) to 50 μL plasma, swirl and mix well for 2 min, centrifuge at 13,000 rpm and 4 ℃ for 15 min, and divide the supernatant into two parts in parallel (100 μL each for determination and analysis of positive and negative ion modes of LC-MS). Freeze-dried and stored in a -80 ℃ refrigerator. Before metabolomics analysis, the samples were redissolved with 50 μL 25% acetonitrile/water (v/v) solution。 Tissue:Weigh about 20 mg lung tissue sample powder into 2 mL EP tube, add 1.5 mL 80% methanol/water (v/v) solution containing internal standard (internal standard and its concentration are shown in Table 2-1), swirl and mix well for 2 min, then add 3 zirconium beads into the sample and grind at 45 hz for 2 times, 5 min each time. The supernatant was divided into two parts in parallel (600 μL each for determination of positive and negative ion modes of LC-MS) at an interval of 15 s, and then centrifuged at 13,000 rpm for 15 min at 4 ℃. The supernatant was freeze-dried and stored in a refrigerator at -80 ℃. Before metabolomics analysis, samples were redissolved with 100 μL 80% methanol/water (v/v) solution.

Sampleprep ID:

SP002907

Sampleprep Summary:

Plasma：Add 200 μL ice acetonitrile containing internal standard (internal standard and its concentration are shown in Table 1-3) to 50 μL plasma, swirl and mix well for 2 min, centrifuge at 13,000 rpm and 4 ℃ for 15 min, and divide the supernatant into two parts in parallel (100 μL each for determination and analysis of positive and negative ion modes of LC-MS). Freeze-dried and stored in a -80 ℃ refrigerator. Before metabolomics analysis, the samples were redissolved with 50 μL 25% acetonitrile/water (v/v) solution。 Tissue:Weigh about 20 mg lung tissue sample powder into 2 mL EP tube, add 1.5 mL 80% methanol/water (v/v) solution containing internal standard (internal standard and its concentration are shown in Table 2-1), swirl and mix well for 2 min, then add 3 zirconium beads into the sample and grind at 45 hz for 2 times, 5 min each time. The supernatant was divided into two parts in parallel (600 μL each for determination of positive and negative ion modes of LC-MS) at an interval of 15 s, and then centrifuged at 13,000 rpm for 15 min at 4 ℃. The supernatant was freeze-dried and stored in a refrigerator at -80 ℃. Before metabolomics analysis, samples were redissolved with 100 μL 80% methanol/water (v/v) solution.