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Modified-Release Drug Delivery Systems: Rate-Programmed II01:19

Modified-Release Drug Delivery Systems: Rate-Programmed II

Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
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Rate-programmed drug delivery systems (DDS) are designed to release drugs at specific, controlled rates to maintain consistent therapeutic levels. These systems are categorized based on their release mechanisms, including dissolution-controlled DDS, diffusion-controlled DDS, and combined dissolution-diffusion-controlled DDS.In dissolution-controlled DDS, the release rate depends on the slow dissolution of the drug itself or the surrounding matrix. Drugs with inherently slow dissolution rates,...
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Related Experiment Video

Updated: May 25, 2026

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
06:32

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Published on: May 2, 2025

Platelets as Programmable Drug Depots: Toward Predictive and Mechanistic Drug Loading.

Alexander E Moskalensky1

  • 1Research Center for Translational Medicine, Sirius University of Science and Technology, Sirius 354340, Russia.

Molecular Pharmaceutics
|May 23, 2026
PubMed
Summary
This summary is machine-generated.

Platelet granules can be engineered as programmable drug depots. Rational design strategies, using physicochemical principles and computational modeling, optimize drug loading and release for advanced drug delivery systems.

Keywords:
biomimetic carriersblood plateletsdrug deliverystorage granulesvesicular transporters

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Last Updated: May 25, 2026

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
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06:47

Microfluidics in Assessing Platelet Function

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Published on: July 10, 2017

Area of Science:

  • Biomedical Engineering
  • Pharmaceutical Science
  • Nanotechnology

Background:

  • Efficient drug delivery faces challenges with synthetic nanocarriers in biological systems.
  • Blood platelets offer potential as biomimetic carriers, but their drug storage capacity is underutilized.

Purpose of the Study:

  • To propose platelet granules as programmable drug depots.
  • To outline a framework for rational control of drug loading and release.
  • To enable model-guided engineering of platelet-based drug delivery platforms.

Main Methods:

  • Utilizing physicochemical principles for passive accumulation (ion trapping).
  • Leveraging endogenous transport mechanisms for active uptake.
  • Applying computational modeling, molecular descriptors, and machine learning for prediction and optimization.

Main Results:

  • Demonstrated a conceptual design loop linking prediction and molecular optimization.
  • Identified pathways for rational control over drug loading into platelet granules.
  • Showcased potential for predicting and enhancing drug compatibility and accumulation efficiency.

Conclusions:

  • Platelets can be engineered as programmable drug depots beyond simple biomimetic carriers.
  • Rational design strategies can optimize drug loading and release kinetics.
  • This approach bridges biological systems with engineering principles for advanced drug delivery.