Dexamethasone
作者：齐岳
发布时间：2023-09-12
09:13:39
点击数：
产品名称：Dexamethasone
产品描述：
| 产品描述 | Dexamethasone is a glucocorticoid receptor agonist and an IL receptor modulator.Dexamethasone inhibits production of exosomes containing inflammatory microRNA-155 in lipopolysaccharide-induced macrophage inflammatory responses |
| 体外活性 | GM-CSF release from A549 cells was inhibited by dexamethasone (EC50 = 2.2 nM). The concentration-dependent ability of dexamethasone (EC50 = 36 nM) to induce transcription of the beta2-receptor was found to correlate with GR DNA binding and occurred at 10-100 fold higher concentrations than the inhibition of GM-CSF release [1]. Following treatment with 1 microM dexamethasone, there was a decrease in transmonolayer paracellular permeability mainly to sucrose, fluorescein, and dextrans of up to 20 KDa [2]. |
| 体内活性 | Kd values (mean+/-SE) for cortisol in human mononuclear leukocytes (HML) of hypertensive patients were higher than in control subjects (24.6 versus 17.5 nmol/L). Binding capacity (4978 versus 4131 sites/cell), Kd values for dexamethasone (6.7 versus 5.7 nmol/L), and IC50 values for dexamethasone (3.4 versus 3.1 nmol/L) and cortisol (12.2 versus 9.5 nmol/L) were not significantly different [3]. Powerful reduction of neutrophils in bronchoalveolar lavage fluid (BALF) was obtained by a single i.p. injection of dexamethasone (10 mg/kg), whereas treatment with N-acetylcysteine (NAC) only resulted in reduction of neutrophils when administered at a high dose (500 mg/kg). A significant decrease of tumour necrosis factor-alpha, IL-1alpha, IL-1beta IL-6, IL- 12p40, and MIP-1alpha mRNA when mice where treated with dexamethasone but not when treated with NAC [4]. |
| 动物实验 | NAC was administered at three different doses (10, 100 and 500 mg/kg body weight). At the highest concentration, the acidic pH of the NAC solution was adjusted by adding NaOH. Dexamethasone was administered as a single injection of 1 or 10 mg/kg. Both drugs were dissolved in saline and 400 μl were injected intraperitoneally, either 1 h before or 1 h after LPS exposure. In one experiment, NAC (100 and 500 mg/kg) was injected successively every 4·5 h, starting 1 h before challenge (five injections in total). A control group of LPS-exposed animals were injected intraperitoneally with solvent alone (saline). Intratracheal administration was performed by instillation of 100 μl NAC (50, 100 or 500 mg/kg) or dexamethasone (10 mg/kg) into the lungs of mice anaesthetized with 15 mg/kg Rapinovet (i.v.) [4]. |
| 别名 | MK 125, Hexadecadrol, Prednisolone F, NSC 34521, 地塞米松 |
| 化合物与蛋白结合的复合物 |
Crystal structure of WT AncGR2-LBD WT bound to dexamethasone and SHP coregulator fragment |
| 分子量 | 392.46 |
| 分子式 | C22H29FO5 |
| CAS No. | 50-02-2 |
存储
Powder: -20°C for 3 years | In solvent: -80°C for 2 years
溶解度
Ethanol: 6 mg/mL (15.28 mM)
DMSO: 73 mg/mL (186 mM)
( < 1 mg/mL refers to the product slightly soluble or insoluble )
联系我们：
邮箱：2519696869@qq.com
QQ: 2519696869
电话：18066853083
微信：18066853083
公司介绍：
西安齐岳生物科技有限公司是集化学科研和定制与一体的高科技化学公司。业务范围包括化学试剂和产品的研发、生产、销售等。涉及产品为通用试剂的分销、非通用试剂的定制与研发，涵盖生物科技、化学品、中间体和化工材料等领域。
主营产品：COF、MOF单体系列：三蝶烯衍生物、金刚烷衍生物、四苯甲烷衍生物、peg、上转换、石墨烯、光电材料、点击化学、凝集素、载玻片、蛋白质交联剂、脂质体、蛋白、多肽、氨基酸、糖化学等。
