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Site-Targeted Drug Delivery Systems: Polymeric Carriers

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: Site-Targeted

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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: Rate-Programmed II

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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Updated: Jul 11, 2026

Manufacture and Drug Delivery Applications of Silk Nanoparticles

Manufacture and Drug Delivery Applications of Silk Nanoparticles

Published on: October 8, 2016

Mesoporous materials for drug delivery.

María Vallet-Regí¹, Francisco Balas, Daniel Arcos

¹Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain. vallet@farm.ucm.es

Angewandte Chemie (International Ed. in English)

|September 15, 2007

Summary

Mesoporous materials show great promise for biomedical applications, particularly in bone tissue repair. Advances in synthesis and functionalization enable sophisticated drug delivery and controlled release systems.

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Porous Silicon Microparticles for Delivery of siRNA Therapeutics

Porous Silicon Microparticles for Delivery of siRNA Therapeutics

Published on: January 15, 2015

Area of Science:

Biomaterials science
Nanotechnology
Drug delivery systems

Background:

Mesoporous materials, including silica-based types (SBA-15, MCM-48) and metal-organic frameworks, have gained traction for biomedical uses since 2001.
These materials are explored for both systemic and local drug delivery, with implantable local-delivery devices showing significant potential.

Purpose of the Study:

This review focuses on recent advancements in mesoporous materials for biomedical applications.
It highlights progress in controlling textural parameters, surface functionalization, and developing stimuli-responsive systems.

Main Methods:

Review of research on silica-based mesoporous materials (e.g., MCM-41, SBA-15, MCM-48) and metal-organic frameworks.
Analysis of their application as drug carriers and in controlled-release systems.
Examination of strategies for tailoring textural properties and surface chemistry.

Main Results:

Mesoporous materials are effective for both systemic and local drug delivery.
Their bioceramic properties make them highly suitable for bone-tissue engineering applications.
Sophisticated stimuli-responsive systems are being developed for enhanced therapeutic outcomes.

Conclusions:

Mesoporous materials offer versatile platforms for advanced drug delivery and regenerative medicine.
Control over material properties is key to optimizing their performance in biomedical contexts.
Future research directions include stimuli-responsive designs for targeted and efficient therapies.