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MB Sample ID: SA211362

Local Sample ID:S7
Subject ID:SU002290
Subject Type:Mammal
Subject Species:Mus musculus
Taxonomy ID:10090
Genotype Strain:wild type and endothelium-specific Sirt1 knockout mice
Age Or Age Range:12 weeks old
Weight Or Weight Range:~30 g
Height Or Height Range:n/a
Gender:Male
Animal Animal Supplier:Jax
Animal Housing:University of Iowa animal house
Animal Light Cycle:12 h light/12 h night
Animal Feed:Standard Chow
Animal Water:Tap water
Animal Inclusion Criteria:n/a
Species Group:n/a

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Sample Preparation:

Sampleprep ID:SP002296
Sampleprep Summary:Tissue samples were lyophilized overnight prior to bead mill homogenization in 18:1 (µl:mg wet tissue weight) ice-cold 2:2:1 methanol:acetonitrile:water extraction buffer containing a mixture of internal standards (D4-citric acid, D4-succinic acid, D8-valine, and U13C-labeled glutamine, glutamic acid, lysine, methionine, serine, and tryptophan; Cambridge Isotope Laboratories). Homogenates were rotated for 1 hour at -20°C. Homogenates were centrifuged for 10 minutes at 21,000 x g, and 150 µl of the cleared metabolite extracts were transferred to autosampler vials and dried using a SpeedVac vacuum concentrator (Thermo). Dried metabolite extracts were reconstituted in 30 μl of 11.4 mg/ml methoxyamine (MOX) in anhydrous pyridine, vortexed for 5 minutes, and heated for 1 hour at 60°C. Next, to each sample 20 μl of N,O-Bis(trimethylsilyl)trifluoroacetamide (TMS) was added, samples were vortexed for 1 minute, and heated for 30 minutes at 60°C.
Sampleprep Protocol Filename:GC_Method_Tissue.pdf
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