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Related Concept Videos

Bioavailability Enhancement: Drug Permeability Enhancement01:27

Bioavailability Enhancement: Drug Permeability Enhancement

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 secretion,...
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Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...
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Oral drug delivery is the most common route of administration due to its convenience, cost-effectiveness, and high patient compliance. It enables precise formulation to ensure proper drug dosage and bioavailability. The development of oral dosage forms considers drug properties such as solubility, stability, and absorption to optimize therapeutic efficacy.Tablets, capsules, liquids, and chewable formulations enhance drug stability, mask undesirable tastes, and improve patient experience.
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Delayed-release drug delivery systems are specialized pharmaceutical formulations designed to postpone the release of active compounds until the drug reaches a specific region of the gastrointestinal (GI) tract, typically the intestine. These systems are essential for drugs that may cause gastric irritation, are unstable in acidic environments, or need to exert therapeutic effects locally in the intestinal or colonic regions.The core feature of delayed-release systems is the use of enteric...

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Updated: Jun 18, 2026

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
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Published on: February 1, 2019

Liposomes as delivery systems for antibiotics.

Zuzanna Drulis-Kawa1, Agata Dorotkiewicz-Jach

  • 1Institute of Genetics and Microbiology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland. kawa@microb.uni.wroc.pl

International Journal of Pharmaceutics
|December 9, 2009
PubMed
Summary

Liposomes offer versatile drug delivery for cosmetics and pharmaceuticals. Modifying liposome properties can enhance drug effectiveness and reduce side effects, though cost is a factor.

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Area of Science:

  • Pharmaceutical Sciences
  • Biotechnology
  • Drug Delivery Systems

Background:

  • Liposomes are widely utilized as drug carriers in pharmaceutical and cosmetic applications.
  • Their physicochemical properties can be tailored for specific drug delivery needs.
  • Research on liposomal antibiotics primarily focuses on aminoglycosides, quinolones, polypeptides, and betalactames.

Purpose of the Study:

  • To explore the potential of liposomal antibiotic carriers in addressing challenges posed by increasing bacterial resistance.
  • To review studies aimed at optimizing pharmacokinetics, reducing toxicity, and enhancing antibacterial activity of liposomal antibiotics.

Main Methods:

  • Literature review of studies on liposomal antibiotic formulations.
  • Analysis of research focusing on the modification of liposome properties for improved drug delivery.
  • Examination of strategies to enhance pharmacokinetic and pharmacodynamic profiles of antibiotics encapsulated in liposomes.

Main Results:

  • Liposome manipulation allows for the design of carriers with specific pharmacokinetic and pharmacodynamic properties.
  • Studies have investigated liposomal delivery for various antibiotic classes, including aminoglycosides, quinolones, polypeptides, and betalactames.
  • Reported benefits include improved drug efficacy and reduced toxicity.

Conclusions:

  • Liposomal antibiotic carriers present a promising approach to combatting bacterial resistance and treating infections.
  • Further consideration of the high costs associated with liposome preparation and treatment is necessary for widespread clinical adoption.