在全身分娩后,阿格马丁的生物分发到大脑和脊髓
Benjamin M Clements1, Cristina D Peterson1, Kelley F Kitto1
1Department of Pharmaceutics (B.M.C., C.D.P., C.A.F.), Department of Pharmacology (L.D.C., G.L.W., C.A.F.), Department of Neuroscience (K.F.K., G.L.W., C.A.F.), and Department of Dermatology (G.L.W.), University of Minnesota, Minneapolis, Minnesota.
The Journal of pharmacology and experimental therapeutics
|September 28, 2023
概括
阿格马丁通过穿越生物障碍到达中枢神经系统,有效治疗慢性疼痛. 这项研究详细介绍了它的药理动力学和在老鼠大脑和脊髓中的分布.
科学领域:
- 药理学和毒理学 药理学和毒理学
- 神经科学是一个神经科学.
- 药物发现和开发 药物发现和开发
背景情况:
- 阿格马丁是一种内源性聚胺,通过抑制N-甲基-D-酸盐受体 (NMDAR) 来减轻慢性疼痛的疗效.
- 了解阿格马丁在跨越生物屏障的分布,包括血脑屏障 (BBB),对于其治疗应用至关重要.
- 现有的分析方法对阿格马丁量化缺乏灵敏度和效率,阻碍了药理动力学和分布研究.
研究的目的:
- 通过HPLC-MS/MS验证一种新,灵敏,高效的生物分析协议,用于用HPLC-MS/MS.在老鼠生物矩阵中量化agmatine.
- 在大鼠体内静脉和口服后确定阿格马丁的血药理动力学.
- 为了研究阿格马丁在中枢神经系统 (CNS) 的分布程度,比较大脑和脊髓的药理动力学.
主要方法:
- 验证一种高性能液体染色学双重质谱 (HPLC-MS/MS) 协议,用于对亚格马丁的量化,符合FDA准确性,精度,稳定性和稀释性标准.
- 在静脉和口服剂后,在大鼠血中对阿格马丁的药理动力学分析.
- 在静脉注射后,在脑和脊髓组织中量化阿格马丁度和半衰期.
主要成果:
- 经过验证的HPLC-MS/MS协议在各种生物矩阵中表现出高灵敏度和准确度的阿格马丁量化.
- 静脉注射的阿格马丁具有较短的血半衰期 (14.918.9分钟),而口服则导致延长的半衰期 (74.4117分钟) 和2935%的生物可用性,这表明翻转动力学.
- 阿格马丁迅速分布到大脑,但在脊髓中显示出延迟分布和较低度,与血相比,组织半衰期明显更长.
结论:
- 新的生物分析方法使得可靠的量化agmatine,促进药理动力学和分布研究.
- 阿格马丁有效地穿越生物障碍,包括BBB,支持其作为中枢神经系统作用的慢性疼痛治疗药物的潜力.
- 大脑和脊髓中的明显的药理动力学特征表明组织特异的分布和保留,为阿格马丁的多种治疗作用提供了理由.
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