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Printable Handouts
Navigable Slide Index
- Introduction
- Educational objectives
- The scale of things – nanometers and more
- Nanomaterials in biological context
- Nanotechnology includes nanomaterials
- Examples of inorganic nanostructured materials
- Implantable drug delivery systems
- How are drugs currently delivered?
- Overcoming injections' poor pharmacokinetics?
- Concept - zero order release
- Tuning pore size to produce linear diffusion
- Nanoscale pores alter drug diffusion curves
- Example: Titania nanochannels
- Example: nanochannels in silicon
- Nanoporous membrane for drug delivery
- Antibody elution
- Sustained release kinetics in vivo
- Drug delivery from nanostructured implants
- Oral interfaces
- Why oral delivery?
- Challenges in oral delivery
- The concept
- Devices can be fabricated
- How to enhance particle binding to epithelium?
- Topography of thin film microdevices
- Nanowire interfaces
- Stability under flow conditions?
- Cell-nanowire interface
- Static adhesion in physiological conditions
- Adhesion in mucin flow
- Adhesive forces
- Improved targeting and retention in vivo
- Nanostructured materials: key benefits
Topics Covered
- Nanomaterials in biological context
- Nanotechnology includes nanomaterials
- Implantable drug delivery systems
- Problem: overcoming injections’ poor pharmacokinetics
- Tuning pore size to produce linear diffusion
- Nanoscale pores alter drug diffusion curves (more dose control)
- Nanoporous membrane for improved implantable drug delivery
- Controlled delivery from nanostructured implants
- Challenges in oral delivery
- Devices can be fabricated
- Nanowire interfaces & Cell-nanowire interface
- Adhesive forces
- Improved targeting and retention of microdevices in vivo
- Nanostructured materials: key benefits
Links
Series:
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Talk Citation
Desai, T. (2018, July 31). Inorganic nanostructured interfaces for therapeutic delivery [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved December 21, 2024, from https://doi.org/10.69645/AUHP4176.Export Citation (RIS)
Publication History
Financial Disclosures
- Prof. Tejal Desai has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Other Talks in the Series: Drug Delivery
Other Talks in the Series: Periodic Reports: Advances in Clinical Interventions and Research Platforms
Transcript
Please wait while the transcript is being prepared...
0:00
Hello, my name is Tejal Desai,
and I'm a professor and chair of
the Department of Bioengineering and Therapeutic Sciences at UCSF.
Today, I am talking about "Inorganic Nanostructured Interfaces for Therapeutic Delivery".
An area that we've worked in for many years,
related to how we can create
nanostructured materials to influence how we deliver drugs to the body.
0:23
For our educational objectives today,
I hope we can gain a basic understanding of nanotechnology and
its implications for biology and particular therapeutic delivery,
and to gain exposure of some of the current challenges facing drug delivery.
Finally, I hope that you will understand ways in which
inorganic nanostructured materials can be used to enhance therapeutic delivery.
0:46
To get started, I just want to introduce everyone to the scale of materials,
and how we think about nanostructures versus micro and macro structures.
The nanotechnology world really lives in a very small domain.
Things that are less than 100 nanometers or so.
So smaller than red blood cells,
smaller than a human hair,
and really on the scale of proteins and biologic molecules.
This is where we're interested in really creating
materials that can interface with the body.
1:18
And while there are many many nanomaterials that had been developed,
in particular what I'll talk to you today about,
are materials in which we take existing micro or macro materials,
and actually nanostructure the interface.
So, this image that is on your right,
which shows a nanotextured or nanoporous implant,
that can be used in many different ways.
Why are we interested in this?