通过对流增强的扩散:破解BBB的新策略
Meenakshi Dhanawat1, Garima2, Kashish Wilson2
1Amity Institute of Pharmacy, Amity University Haryana, Amity Education Valley, Panchgaon, Manesar, Gurugram, Haryana, 122413, India.
Current drug delivery
|January 26, 2024
概括
通过对流增强的输送 (CED) 克服了血液-大脑屏障,以向向大脑输送药物. 这种方法使用压力梯度来有效治疗神经疾病,如脑瘤.
科学领域:
- 神经外科 神经外科
- 药理学 药理学是指药理学的学科.
- 生物医学工程 生物医学工程
背景情况:
- 大脑对营养素的可获得性与向恶性脑瘤提供药物的挑战形成鲜明对比.
- 血脑屏障 (BBB) 限制了许多治疗剂的通道.
- 诸如脑瘤,帕金森病和等神经系统疾病需要有效的药物输送策略.
研究的目的:
- 引入对流增强传递 (CED) 作为绕过BBB的方法.
- 解释CED用于向药物管理的机制和应用.
- 突出CED在治疗中枢神经系统 (CNS) 疾病方面的潜力.
主要方法:
- CED利用压力梯度在大脑内分发治疗剂.
- 药物通过立体放置的导管直接输送到瘤或切除腔内或周围.
- 积极压力输液技术使得各种药物类别的使用成为可能,包括新的向药物.
主要成果:
- 中央药物管理中心 (CED) 促进了针对性的药物输送,克服了BBB的局限性.
- 优化输注量至关重要,以最大限度地提高疗效,并最大限度地减少反流的副作用.
- 该技术允许精确的药物分布在中枢神经系统.
结论:
- 通过对流增强分娩 (CED) 在治疗脑瘤和其他神经系统疾病方面取得了重大进展.
- 这种方法提供了一种有前途的方法,用于输送通常无法穿过BBB的治疗剂.
- 精心优化CED参数对于成功的临床应用在中枢神经系统疾病中至关重要.
相关概念视频
The Blood-brain Barrier
47.4K
Overview
47.4K
Passive Diffusion: Overview and Kinetics
472
Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
472
Physiological Barriers
3.6K
Physiological barriers are semi-permeable cellular structures restricting drug diffusion into intracellular compartments and tissues. There are six types of physiological barriers: blood endothelial, cell membrane, blood-brain, blood-cerebrospinal fluid (CSF), blood-placenta, and blood-testis barriers.
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
3.6K
Factors Affecting Drug Distribution: Physiological Barriers
201
Drug distribution in the body is intricately regulated by various physiological barriers that control the passage of substances. These include the capillary endothelial barrier, the blood-brain, blood-cerebrospinal fluid, blood-placental, and blood-testis barriers.
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
201
Diffusion
192.3K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
192.3K


