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Related Experiment Video

Updated: Jun 27, 2026

Preparation of Functional Silica Using a Bioinspired Method

Preparation of Functional Silica Using a Bioinspired Method

Published on: August 1, 2018

Cortisol controlled release by mesoporous silica.

Tessy Lopez¹, Emma Ortiz, Roberto Alexander-Katz

¹Departamento Atención a la Salud, Universidad Autónoma Metropolitana-Xochimilco, Tlalpan, México DF, México. tessy3@prodigy.net.mx

Nanomedicine : Nanotechnology, Biology, and Medicine

|December 19, 2008

Summary

This summary is machine-generated.

This study synthesized four SBA-15 materials, including modified versions, for hydrocortisone delivery. Additives significantly influenced drug release kinetics, showing potential for controlled drug delivery applications.

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Area of Science:

Materials Science
Nanotechnology
Drug Delivery

Background:

Ordered mesoporous silica materials, such as SBA-15, are promising scaffolds for drug delivery applications.
Controlling the synthesis of SBA-15 with specific structural properties is crucial for optimizing drug release.
Hydrocortisone is a corticosteroid with anti-inflammatory properties, necessitating effective delivery systems.

Purpose of the Study:

To synthesize and characterize four distinct SBA-15 materials.
To investigate the impregnation of hydrocortisone into these SBA-15 structures.
To analyze the drug release kinetics and the influence of synthesis additives on this process.

Main Methods:

Synthesis of SBA-15 using Pluronics P123, with modifications using 1,3,5-trimethylbenzene or sodium iodide.
Characterization of SBA-15 materials, focusing on structural symmetry (p6 mm) and functional groups.
In vitro drug release studies to determine hydrocortisone release kinetics from the synthesized materials.

Main Results:

Four types of SBA-15 were successfully synthesized, with three exhibiting hexagonal nanotube packing (p6 mm symmetry) and one being disordered.
Hydrocortisone release occurred in two stages: a rapid release from macropores followed by a slower diffusion-controlled release from nanopores.
The use of different co-additives during synthesis significantly impacted the drug release kinetics.

Conclusions:

SBA-15 materials can be tailored through additive selection during synthesis to control hydrocortisone release.
The two-stage release mechanism suggests potential for both initial burst release and sustained delivery.
These findings highlight the importance of material design in developing advanced drug delivery systems.