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Bioavailability Enhancement: Drug Permeability Enhancement

Bioavailability Enhancement: Drug Permeability Enhancement

Body:After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt...

Mechanisms of Drug Absorption: Paracellular, Transcellular, and Vesicular Transport

Mechanisms of Drug Absorption: Paracellular, Transcellular, and Vesicular Transport

Drugs need to permeate cell membranes to reach their target sites after administration. Orally administered drugs must transcend intestinal epithelial membrane barriers to infiltrate the systemic circulation. Drugs with a molecular weight of less than 500 Daltons diffuse through gaps between neighboring cells, called paracellular pathways.
However, most drugs use the transcellular route, traversing directly through the cell membranes via two mechanisms: passive and active transport. Passive...

Drug Delivery: Overview

Drug Delivery: Overview

The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...

Cellular Membranes and Drug Transport

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.

Carrier-Mediated Transport

Carrier-Mediated Transport

Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...

Intralumenal Vesicles and Multivesicular Bodies

Intralumenal Vesicles and Multivesicular Bodies

Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...

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Related Experiment Video

Updated: Oct 22, 2025

Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins

Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins

Published on: August 31, 2019

Multivesicular Liposome: A Lipid-based Drug Delivery System for Efficient Drug Delivery.

Bapi Gorain¹, Bandar E Al-Dhubiab², Anroop Nair²

¹School of Pharmacy, Faculty of Health and Medical Science, Taylor's University, Subang Jaya, Selangor, Malaysia.

Current Pharmaceutical Design

|August 30, 2021

Summary

Multivesicular liposomes offer advanced drug delivery with enhanced drug loading, sustained release, and improved safety. This innovative formulation protects therapeutics, increasing efficacy and patient compliance.

Keywords:

Multivesicular vesicles dosing frequencies.high encapsulation liposomes prolonged circulation sustained and controlled release

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Last Updated: Oct 22, 2025

Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins

Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins

Published on: August 31, 2019

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Self-Nanoemulsification of Healthy Oils to Enhance the Solubility of Lipophilic Drugs

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Published on: July 27, 2022

Area of Science:

Pharmaceutics
Biotechnology
Drug Delivery Systems

Background:

Novel drug delivery systems aim to improve therapeutic agent performance.
Multivesicular liposomes are a promising formulation for enhanced drug delivery.

Purpose of the Study:

To review the preparation and applications of multivesicular liposomes.
To highlight the advantages and challenges of this drug delivery platform.

Main Methods:

Literature review focusing on multivesicular liposome preparation.
Analysis of applications in various ailments and performance improvements.
Examination of challenges in multivesicular vesicle delivery.

Main Results:

Multivesicular liposomes offer increased drug loading, sustained release, and targeted delivery.
This system protects entrapped agents (hydrophilic/hydrophobic, proteins, peptides) from degradation.
Prolonged plasma drug concentration reduces dosing frequency, enhancing bioavailability and safety.

Conclusions:

Multivesicular liposomes represent an advanced drug delivery platform with improved efficacy and safety.
The formulation enhances drug stability and patient compliance.
Ongoing research and clinical approvals indicate significant potential.