Related Experiment Video

Updated: Aug 13, 2025

Manufacture and Drug Delivery Applications of Silk Nanoparticles
09:03

Manufacture and Drug Delivery Applications of Silk Nanoparticles

Published on: October 8, 2016

16.0K

Identification of Nanoparticle Properties for Optimal Drug Delivery across a Physiological Cell Barrier

Aisling M Ross1,2, Rachel M Cahalane1,2,3, Darragh R Walsh1,2

  • 1BioScience and BioEngineering Research (BioSciBer), Bernal Biomaterials, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland.

Pharmaceutics
|January 21, 2023
PubMed

Keywords:
cell barriercharacterizationdisruptionnanocarrierspermeabilitytoxicity

More Related Videos

Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier10:16

Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier

Published on: February 8, 2017

7.6K
Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers18:57

Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers

Published on: October 17, 2013

46.5K

Related Concept Videos

Cellular Membranes and Drug Transport01:24

Cellular Membranes and Drug Transport

Drugs must traverse multiple biological barriers, such as multi-layered skin, single-layered intestinal epithelium, and the plasma membrane, to reach their target sites within the body. The plasma membrane, a highly structured composite of phospholipids, carbohydrates, and proteins, is the cell's protective boundary, facilitating selective substance exchange.
Phospholipids arrange themselves into a bilayer, with hydrophilic heads oriented outward and hydrophobic tails facing inward.
726
Factors Influencing Drug Absorption: Physicochemical Parameters01:22

Factors Influencing Drug Absorption: Physicochemical Parameters

The physicochemical characteristics of drugs play a crucial role in formulating stable and bioavailable drug products. The solubility of a drug, governed by the varying pH along the GI tract and its dissociation constant (pKa), is pivotal in determining its ionization state and absorption rate. Notably, weak acids and bases remain unionized and are absorbed more rapidly.
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...
361
Factors Affecting Drug Distribution: Physiological Barriers01:23

Factors Affecting Drug Distribution: Physiological Barriers

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...
275
Factors Affecting Dissolution: Particle Size and Effective Surface Area01:23

Factors Affecting Dissolution: Particle Size and Effective Surface Area

Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
929