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Related Concept Videos

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: 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...
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...
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.
Feedback control systems01:26

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Methods Of Healthcare Delivery System01:26

Methods Of Healthcare Delivery System

At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is limited...

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Related Experiment Video

Updated: Jul 3, 2026

The Evoked Potential Operant Conditioning System (EPOCS): A Research Tool and an Emerging Therapy for Chronic Neuromuscular Disorders
10:08

The Evoked Potential Operant Conditioning System (EPOCS): A Research Tool and an Emerging Therapy for Chronic Neuromuscular Disorders

Published on: August 25, 2022

Advances in recognitive, conductive and responsive delivery systems.

Carolyn L Bayer1, Nicholas A Peppas

  • 1Center on Biomaterials, Drug Delivery, Bionanotechnology and Molecular Recognition, Departments of Chemical Engineering, Biomedical Engineering and Pharmaceutics, The University of Texas at Austin, Austin, TX 78712-0231, USA.

Journal of Controlled Release : Official Journal of the Controlled Release Society
|July 26, 2008
PubMed
Summary

Researchers are developing smart drug delivery systems that detect disease biomarkers and release medication. These self-sustained systems show promise for targeted therapies, expanding beyond diagnostics.

Related Experiment Videos

Last Updated: Jul 3, 2026

The Evoked Potential Operant Conditioning System (EPOCS): A Research Tool and an Emerging Therapy for Chronic Neuromuscular Disorders
10:08

The Evoked Potential Operant Conditioning System (EPOCS): A Research Tool and an Emerging Therapy for Chronic Neuromuscular Disorders

Published on: August 25, 2022

Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Pharmacology

Background:

  • Drug delivery systems are evolving towards 'smart' technologies.
  • Self-sustained systems aim to recognize biomarkers and trigger therapeutic action.
  • Current advancements are primarily driven by academic and biotech research.

Purpose of the Study:

  • To examine the foundational principles of biomarker-recognitive drug delivery systems.
  • To identify the key mechanisms and signal transduction pathways involved.
  • To highlight the significance and efficacy of these advanced therapeutic approaches.

Main Methods:

  • Review of existing literature on self-sustained drug delivery systems.
  • Analysis of biomarker recognition and response mechanisms.
  • Examination of signal transduction in conductive studies.
  • Presentation of selected experimental results.

Main Results:

  • Biomarker-recognitive systems offer a pathway for targeted drug release.
  • Understanding mechanisms is crucial for developing effective therapeutic action.
  • Conductive studies demonstrate the potential of these advanced systems.
  • Experimental data confirms the importance and success of these methods.

Conclusions:

  • Self-sustained, biomarker-recognitive drug delivery systems represent a significant advancement.
  • These systems bridge diagnostics and therapeutics for enhanced treatment.
  • Further research and development are crucial for clinical translation.