Summary of Study ST002357

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 PR001514. The data can be accessed directly via it's Project DOI: 10.21228/M80H6B 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 ID	ST002357
Study Title	Comparative lipidomics study of brain samples from deep-diving pinnipeds and terrestrial (non-diving) relatives
Study Summary	Brain samples from deep-diving pinnipeds (Cystophora cristata (n=10), Pagophilus groenlandicus (n=6)) were compared to terrestrial (non-diving) relatives (Mustela putorius furo (n=4), Mus musculus (n=9)).
Institute	University of Hamburg
Last Name	Martens
First Name	Gerrit Alexander
Address	Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
Email	gerrit.alexander.martens@uni-hamburg.de
Phone	+49 40 42838-3934
Submit Date	2022-11-22
Raw Data Available	Yes
Raw Data File Type(s)	cdf
Analysis Type Detail	LC-MS
Release Date	2023-04-12
Release Version	1

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Sample Preparation:

Sampleprep ID:	SP002452
Sampleprep Summary:	The extraction protocol was performed slightly modified according to the method of Bligh and Dyer (Bligh and Dyer 1959). About 20 mg sample was weighed into a 2.0 ml reaction tube (Eppendorf, Hamburg, Germany). Two steel balls (3.6 mm), 100 µl chloroform and 200 µl methanol were added to the sample. The mixture was homogenized in a ball mill (1 min, 3.1 m/s Bead Ruptor 24, Omni International IM, GA, USA)). Afterwards 200 µl water and 100 µl chloroform were added and again processed in the ball mill (1 min, 3.1 m/s). The homogenized sample was then centrifuged (20 min, 16.000xg, 5 °C, Sigma 3-16PK, Sigma, Osterode, Germany). A quality control sample (QC) was prepared by transferring 30 µl of each sample into a new vial. The organic chloroform phase was directly used for measurement.

Sampleprep ID:

SP002452

Sampleprep Summary:

The extraction protocol was performed slightly modified according to the method of Bligh and Dyer (Bligh and Dyer 1959). About 20 mg sample was weighed into a 2.0 ml reaction tube (Eppendorf, Hamburg, Germany). Two steel balls (3.6 mm), 100 µl chloroform and 200 µl methanol were added to the sample. The mixture was homogenized in a ball mill (1 min, 3.1 m/s Bead Ruptor 24, Omni International IM, GA, USA)). Afterwards 200 µl water and 100 µl chloroform were added and again processed in the ball mill (1 min, 3.1 m/s). The homogenized sample was then centrifuged (20 min, 16.000xg, 5 °C, Sigma 3-16PK, Sigma, Osterode, Germany). A quality control sample (QC) was prepared by transferring 30 µl of each sample into a new vial. The organic chloroform phase was directly used for measurement.