Controlled Release Mechanisms
Controlled Release Mechanisms - Related Videos
09:11
Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release
0 Views •
Cited by 10 •
2016
We present a facile method to fabricate a biodegradable gelatin-based drug release platform that is magneto-thermally responsive. This was achieved by incorporating superparamagnetic iron oxide nanoparticles and poly(N-isopropylacrylamide-co-acrylamide) within a spherical gelatin micro-network crosslinked by genipin, in conjunction with an alternating magnetic field application system.
11:13
Composite Scaffolds of Interfacial Polyelectrolyte Fibers for Temporally Controlled Release of Biomolecules
0 Views •
Cited by 3 •
2015
Scaffolds for tissue engineering need to recapitulate the complex biochemical and biophysical microenvironment of the cellular niche. Here, we show the use of interfacial polyelectrolyte complexation fibers as a platform to create composite, multi-component polymeric scaffolds with sustained biochemical release.
10:02
Mechanical Manipulation of Neurons to Control Axonal Development
0 Views •
Cited by 10 •
2011
Application and direct measurements of forces on neurons in the 2-1000 microdyne range are achieved with high precision using calibrated glass needles. This methodology can be used to control and measure several aspects of axonal development, including axonal initiation, axonal tension, velocity of axonal elongation, and force vectors.
06:16
Mistletoe Eradicator - A Novel Tool for Simultaneous Mechanical and Chemical Control of Mistletoe
0 Views •
Cited by 4 •
2022
The protocol describes an easy-to-handle tool called Mistletoe Eradicator which combines mechanical and chemical approaches and is efficient in the control of mistletoe infestation on the host trees. The manuscript uses the European mistletoe (Viscum album subsp. album L.) as an example.
11:38
Environmentally-controlled Microtensile Testing of Mechanically-adaptive Polymer Nanocomposites for ex vivo Characterization
0 Views •
Cited by 9 •
2013
A method is discussed by which the in vivo mechanical behavior of stimuli-responsive materials is monitored as a function of time. Samples are tested ex vivo using a microtensile tester with environmental controls to simulate the physiological environment. This work further promotes understanding the in vivo behavior of our material.
FAQs
Diffusion regulates release by allowing the active compound to move gradually through a polymer matrix rather than becoming available all at once. The matrix acts as a barrier that shapes the rate of transport. In clinical delivery systems, this principle supports extended-release tablets and other formulations designed to maintain therapeutic levels with fewer fluctuations.
A dissolving coating can delay or pace access to the active compound, while degradation of a biodegradable material can progressively expose or liberate the drug. These mechanisms provide alternatives to diffusion-based release and can be incorporated into clinical systems when the desired exposure pattern depends on coating behavior or material breakdown.
Some controlled release mechanisms respond to local or surrounding conditions such as pH, temperature, and enzymes. Changes in these conditions can alter the behavior of the delivery material and thereby influence when or where the compound becomes available. This responsiveness supports delivery platforms intended to adjust release according to physiological or treatment-related environments.
Regulating release can reduce the peaks and troughs associated with fluctuating drug exposure, helping keep concentrations within a more consistent therapeutic range. This approach may also limit adverse effects linked to excessive exposure and reduce the need for frequent administration. The result is a delivery strategy focused on steadier treatment rather than repeated immediate dosing.
Clinical applications include extended-release tablets, implantable systems, injectable depots, transdermal patches, and targeted delivery platforms. Each format provides a different way to place the release-controlling material in relation to the active compound. Selecting among them allows researchers to match the delivery approach with the intended route, duration, and location of treatment.
Development begins by selecting a release principle, such as polymer diffusion, coating dissolution, material degradation, or environmental responsiveness. Researchers then apply that principle within a suitable dosage form, such as a tablet, implant, depot, patch, or targeted platform. The system is evaluated according to its ability to regulate exposure and support the intended therapeutic outcome.