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Related Concept Videos

Oral Drug Delivery Systems: Delayed-Release Systems01:11

Oral Drug Delivery Systems: Delayed-Release Systems

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...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

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...
Modified-Release Drug Delivery Systems: Stimuli-Activated01:30

Modified-Release Drug Delivery Systems: Stimuli-Activated

Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
Oral Drug Delivery Systems: Continuous-Release Systems01:26

Oral Drug Delivery Systems: Continuous-Release Systems

Continuous-release drug delivery systems offer a strategic approach to maintaining therapeutic drug levels over extended periods following oral administration. By modulating the release rate of active pharmaceutical ingredients, these systems minimize fluctuations in plasma concentrations, which enhances clinical efficacy and reduces the need for frequent dosing. Such characteristics make them particularly advantageous in managing chronic diseases where patient adherence and stable drug...
Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...
Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...

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Related Experiment Video

Updated: Jun 4, 2026

Antimicrobial Characterization of Advanced Materials for Bioengineering Applications
08:08

Antimicrobial Characterization of Advanced Materials for Bioengineering Applications

Published on: August 4, 2018

Biodegradable antibiotic delivery systems.

M El-Husseiny1, S Patel, R J MacFarlane

  • 1Department of Orthopaedics and Trauma, University College Hospital, 235 Euston Road, London NW1 2BU, UK. moatazelhusseiny@gmail.com

The Journal of Bone and Joint Surgery. British Volume
|February 2, 2011
PubMed
Summary
This summary is machine-generated.

New biodegradable carriers show promise for treating bone infections in orthopaedic surgery, potentially offering improved antibiotic delivery over older, non-biodegradable methods.

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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

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Last Updated: Jun 4, 2026

Antimicrobial Characterization of Advanced Materials for Bioengineering Applications
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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
09:22

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

Published on: August 28, 2015

Area of Science:

  • Orthopaedic Surgery
  • Biomaterials Science
  • Infectious Diseases

Background:

  • Bacterial infections in orthopaedic surgery lead to severe morbidity and poor outcomes.
  • Current methods like antibiotic-loaded polymethylmethacrylate (PMMA) and collagen fleece have limitations.
  • PMMA is non-biodegradable and prone to secondary infections, requiring removal.
  • Collagen fleece requires systemic antibiotics and doesn't offer sustained local release.

Purpose of the Study:

  • To review emerging biodegradable carrier systems for localized antibiotic delivery in orthopaedic infections.
  • To explore alternatives to current methods for improved treatment of osteomyelitis.

Main Methods:

  • Literature review of experimental and developmental biodegradable carrier systems.
  • Analysis of existing methods (PMMA, collagen fleece) and their drawbacks.

Main Results:

  • Biodegradable carriers are in the experimental phase.
  • These newer systems aim for sustained, high-concentration local antibiotic release.
  • Potential to overcome limitations of current non-biodegradable and non-sustained release systems.

Conclusions:

  • Biodegradable carriers represent a promising advancement in managing orthopaedic bacterial infections.
  • These novel systems may offer a more effective and potentially safer alternative for treating osteomyelitis.
  • Further development could lead to improved patient outcomes by enabling monotherapy and reducing systemic toxicity.