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Microtainer k2e

Manufactured by BD
Sourced in United States

The Microtainer K2E is a collection tube designed for the collection and transportation of small sample volumes. It contains K2EDTA as an anticoagulant to prevent blood clotting.

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3 protocols using microtainer k2e

1

Quantification of Plasma Estradiol and IL-1β

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The mouse blood was collected via a cardiac puncture in microtainer K2E (BD, Cat # 365974, Franklin Lakes, NJ, USA) and centrifuged at 1600× g for 15 min at 4 °C to measure the plasma 17β-estradiol levels. The supernatant plasma was collected, and the levels of 17β-estradiol were assessed using the 17 beta Estradiol ELISA kit (Abcam, Cat # ab108667, Cambridge, UK) following the manufacturer’s protocol. To measure the IL-1β release from the GT1b-stimulated primary mixed glia, we treated ATP 30 min prior to supernatants collection to induce the secretion of IL-1β, and collected supernatants of mixed glia centrifuged at 500× g for 5 min to discard the cell debris. The IL-1β levels were measured using the mouse IL-1 beta Quantikine ELISA kit (R&D Systems Inc., Cat # MLB00C, Minneapolis, MN, USA) following the manufacturer’s protocol.
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2

Plasma Triglyceride Quantification

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Blood was collected in EDTA-coated tubes (Microtainer K2E, BD) and centrifuged (3500 rpm, 15 min) to separate plasma. Livers were flash frozen in liquid nitrogen, then stored at −80 °C until homogenization in isopropanol. Triglyceride levels were measured using reagents from Wako Diagnostics per manufacturer's protocol.
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3

Lipid Quantification in Murine Tissues

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Blood for lipid analyses was collected from sacrificed mice by heart puncture in EDTA coated collection tubes (Microtainer K2E, BD, Franklin Lakes, NJ, USA) and centrifuged at 3500 rpm for 15 minutes to separate plasma. Harvested livers were flash frozen in liquid nitrogen. Livers were homogenized in isopropanol and triglyceride levels were measured using reagents obtained from Wako Diagnostics according to the manufacture’s protocol (Wako Diagnostics, Richmond, VA, USA). Liver and serum cholesterol levels were determined using the Infinity cholesterol solution (ThermoFisher Scientific).
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