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MB Sample ID: SA323014
Local Sample ID: | ZH3 |
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. |