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Chronopharmacokinetics: Time-Dependent Pharmacokinetics01:20

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Chronopharmacokinetics studies the temporal change in drug absorption and elimination. These changes can be cyclical or non-cyclical. Cyclical changes occur over a regular interval, while non-cyclical changes occur over a longer, irregular period.
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Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
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All neuromuscular blocking agents are injected intravenously because they are poorly absorbed from the GI tract. Rapid onset is achieved with intravenous administration, although absorption is also adequate from an intramuscular injection. Since these agents are highly ionized, they do not readily penetrate cell membranes or cross the blood-brain barrier.
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克里普托菲辛单元B的类似物

Thomas Schachtsiek1, Jona Voss1, Maren Hamsen1

  • 1Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany.

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PubMed
概括
此摘要是机器生成的。

研究人员合成了两种新的加密素,它们是强大的抗癌剂,使其能够用于向药物合物. 这种方法旨在提高癌症治疗的选择性和有效性,特别是针对多药耐药瘤.

关键词:
癌症治疗 治疗 治疗 癌症这些是加密phycins.药物合物 药物合物实用载荷的有效载荷是什么有针对性的交付目标.

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科学领域:

  • 药用化学 医学化学
  • 在瘤学瘤学.
  • 药物发现 药物发现 药物发现

背景情况:

  • 药物合物代表了针对癌症治疗的有希望的策略,通过向瘤细胞提供强大的细胞毒剂,最大限度地减少对健康组织的损害.
  • 密码毒素是高度细胞毒性的循环脱类,对多抗药性癌症细胞系有效,但它们作为独立剂的临床应用是有限的.
  • 在药物合物中利用加密素的一个关键挑战是缺乏适合的化学柄,用于对向部分的共价附着.

研究的目的:

  • 合成新型,可结合的加密素衍生物,适用于用于向癌症治疗的有效载荷.
  • 开发基于加密素的药物合物,以提高对抗多药耐药癌症的选择性和有效性.

主要方法:

  • 两种加密素类似物在B单元上含有氨基基团的化学合成,旨在作为结合的附着点.
  • 合成化合物的表征,以确认它们的结构和适合进一步的药物合物开发.

主要成果:

  • 成功合成了两种具有战略位置的氨基基群的新型密码素衍生物.
  • 这些衍生物被设计成易于结合,克服了以前加密素类似物的主要局限性.
  • 合成的化合物代表了可行的有效载荷,用于开发针对性药物对抗耐药癌症的合物.

结论:

  • 开发的可结合的加密素为制造先进的药物结合物提供了一个有前途的平台.
  • 这种方法有可能对抗多药性癌症进行更有效和更有选择性的治疗.
  • 需要进一步的研究,包括结合和体内评估,以充分评估治疗潜力.