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Related Concept Videos

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...
Modified-Release Drug Delivery Systems: Site-Targeted01:24

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.
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...
Drug Delivery Systems: Different Types01:27

Drug Delivery Systems: Different Types

Conventional oral drug products, termed immediate-release (IR) formulations, are engineered to promptly release their active pharmaceutical ingredient (API) upon ingestion, typically in tablets or capsules. This rapid release often results in swift drug absorption and consequent pharmacodynamic effects, although the timing and intensity can vary depending on the drug's properties. Prodrugs within these formulations require metabolic conversion to activate their pharmacodynamic effects,...
Modified-Release Drug Delivery Systems: Overview01:19

Modified-Release Drug Delivery Systems: Overview

Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...

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Related Experiment Video

Updated: Jun 28, 2026

Manufacture and Drug Delivery Applications of Silk Nanoparticles
09:03

Manufacture and Drug Delivery Applications of Silk Nanoparticles

Published on: October 8, 2016

Multifunctional and stimuli-sensitive pharmaceutical nanocarriers.

Vladimir Torchilin1

  • 1Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, MA 02115, USA.

European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Fur Pharmazeutische Verfahrenstechnik E.V
|November 4, 2008
PubMed
Summary
This summary is machine-generated.

Multifunctional pharmaceutical nanocarriers combine properties like longevity and targeting for enhanced therapies. Engineering these advanced drug delivery systems promises improved treatment and diagnostic efficacy.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Pharmacology

Background:

  • Current pharmaceutical nanocarriers (liposomes, micelles, nanoparticles) offer useful properties like longevity, targeting, and stimuli-sensitivity.
  • Some nanocarriers are clinically approved, while others are in preclinical development.
  • Combining multiple properties in single nanocarrier systems enhances therapeutic and diagnostic potential.

Purpose of the Study:

  • To review the current status of multifunctional pharmaceutical nanocarriers.
  • To explore future directions in the development of these advanced systems.
  • To focus on combining key properties: longevity, targetability, intracellular penetration, contrast loading, and stimuli-sensitivity.

Main Methods:

  • Literature review of existing pharmaceutical nanocarrier research.
  • Analysis of current preclinical and clinical applications.
  • Discussion of engineering strategies for multifunctional nanocarriers.

Main Results:

  • Pharmaceutical nanocarriers exhibit diverse beneficial properties for drug delivery.
  • Multifunctional nanocarriers integrate multiple properties (e.g., longevity, targeting) for synergistic effects.
  • Immunoliposomes exemplify successful combination of prolonged circulation and specific targeting.

Conclusions:

  • The engineering of multifunctional nanocarriers is crucial for advancing therapeutic and diagnostic protocols.
  • Combining longevity, targetability, intracellular penetration, contrast loading, and stimuli-sensitivity offers significant potential.
  • Further research into multifunctional nanocarriers promises enhanced efficacy in disease treatment and management.