Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA323020

Local Sample ID:	ZD4
Subject ID:	SU003081
Subject Type:	Mammal
Subject Species:	Rattus norvegicus
Taxonomy ID:	10116

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Sample Preparation:

Sampleprep ID:	SP003087
Sampleprep Summary:	After euthanizing the rats, the brains were rapidly removed and the brain cortical tissues were separated on ice and stored at -80°C. 30 mg of each sample was added to 450 μL pre-cooled MeOH: H2O (4:1, v/v) and zirconium beads. The homogenizer was pre-cooled and homogenized at 50 Hz for 3 × 15 s with an interval of 5 s. After standing at -20°C for 1 h, samples were centrifuged at 16000 g and 4°C for 15 min. The supernatant was collected, a portion of each brain tissue sample was taken as quality control, the remaining samples and QC were evaporated to 4/5 of the original volume under a nitrogen blower. Excess water was removed using a freeze dryer and stored at -80°C. The samples were reconstituted with 200 μL methanol/water (1:1, v/v). After vortexing for 30 s and ultrasonicating on ice for 1 min, samples were centrifuged at 16000 g and 4°C for 15 min. The supernatant was transferred to UPLC injection vials for LC-MS analysis.

Sampleprep ID:

SP003087

Sampleprep Summary:

After euthanizing the rats, the brains were rapidly removed and the brain cortical tissues were separated on ice and stored at -80°C. 30 mg of each sample was added to 450 μL pre-cooled MeOH: H2O (4:1, v/v) and zirconium beads. The homogenizer was pre-cooled and homogenized at 50 Hz for 3 × 15 s with an interval of 5 s. After standing at -20°C for 1 h, samples were centrifuged at 16000 g and 4°C for 15 min. The supernatant was collected, a portion of each brain tissue sample was taken as quality control, the remaining samples and QC were evaporated to 4/5 of the original volume under a nitrogen blower. Excess water was removed using a freeze dryer and stored at -80°C. The samples were reconstituted with 200 μL methanol/water (1:1, v/v). After vortexing for 30 s and ultrasonicating on ice for 1 min, samples were centrifuged at 16000 g and 4°C for 15 min. The supernatant was transferred to UPLC injection vials for LC-MS analysis.