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Oxazolone

CAS No. : 15646-46-5

MCE 站：Oxazolone

产品活性：Oxazolone 是一种半抗原化剂，可诱导急性或慢性大肠炎症，用于构建结肠炎模型。Oxazolone 能够引起 Th1/Th2 依赖性结肠炎，并伴有体重减轻和腹泻。Oxazolone 引起的炎症能够被中和性抗 IL-4 或抗 TNF-α 抗体或诱饵 IL-13R2α-Fc 蛋白减轻。

研究领域：Apoptosis  |  Immunology/Inflammation

作用靶点：TNF Receptor  |  Interleukin Related

In Vivo: Colitis induction
1.Prepare procedure
Preparation of sensitization solution (I):
Mix acetone ａnd olive oil in a 4:1 v/v ratio by vortexing. Dissolve a 60 mg oxazolone in 2 mL of this solution to obtain a 3 % (w/v) oxazolone sensitization solution. Mix the solution by carefully vortexing.
Preparation of challenge solution (II):
Dissolve 20 mg Oxazolone in 2 mL of 50 % ethanol to obtain a 1 % (w/v) solution. Mix the solution by careful vortexing. The oxazolone powder should be completely dissolved before use.

2. Experimental procedure
Sensitization pretreatment:
The electric scissors scraped an area of about 2 cmx2 cm on the skin of the mice＇s backs. Be careful to avoid open wounds.
Apply 150 μL of sensitizing solution (working solution 1) to the exposed skin of mice. Be careful to use an Oxazolone-free sensitizer as a control.Induction treatment:
Anesthetized mice: intraperitoneally injected ketamine/thiazide solution (80 μL/10 g), or inhaled with isoflurane anesthesia system.
The catheter was inserted into the colon of the mice (about 3-4 cm deep at the proximal end of the anus). The other end of the catheter is connected to a 1 mL syringe.
About 100 μL of oxazolone stimulation solution is injected into the colonic cavity through a catheter for 10 to 30 seconds.After dosing, hold the mouse in a vertical position (head down) for 60 seconds.

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