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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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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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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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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...
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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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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...
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Pectin hydrogels for controlled drug release: Recent developments and future prospects.

Devesh U Kapoor1, Rahul Garg2, Mansi Gaur3

  • 1Dr. Dayaram Patel Pharmacy College, Bardoli, Gujarat 394601, India.

Saudi Pharmaceutical Journal : SPJ : the Official Publication of the Saudi Pharmaceutical Society
|March 5, 2024
PubMed
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Pectin hydrogels offer versatile solutions for controlled pharmaceutical release. This review highlights their broad applications, formulation strategies, and potential in advanced drug delivery systems.

Keywords:
Controlled releaseCrosslinkingHydrogelsOral drug deliveryPectinTransdermal delivery

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Area of Science:

  • Biomaterials Science
  • Pharmaceutical Technology
  • Drug Delivery

Background:

  • Pectin hydrogels are increasingly recognized for their potential in controlled pharmaceutical release.
  • Pectin, a natural biopolymer, possesses versatile properties suitable for various drug delivery applications.

Purpose of the Study:

  • To review the diverse applications and potential of pectin-based hydrogels in pharmaceutical formulations.
  • To provide insights into formulation strategies, crosslinking techniques, and factors influencing drug release from pectin hydrogels.
  • To explore the adaptability of pectin hydrogels across different domains, including drug delivery, wound healing, and tissue engineering.

Main Methods:

  • Comprehensive literature review of pectin hydrogels in drug delivery.
  • Analysis of formulation strategies and crosslinking techniques for pectin hydrogels.
  • Examination of factors affecting drug release kinetics and environmental influences.

Main Results:

  • Pectin hydrogels exhibit significant potential for controlled drug entrapment and release.
  • Their adaptability spans oral, transdermal, wound healing, and tissue engineering applications.
  • Key factors influencing drug release include environmental conditions and drug characteristics.

Conclusions:

  • Pectin hydrogels are a promising platform for advanced drug delivery systems.
  • Further research into standardization and regulatory compliance is necessary for clinical translation.
  • The versatility of pectin hydrogels opens new avenues for pharmaceutical innovation.