Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Nanotech for transdermal sildenafil - Viagra

Abstract:
Sildenafil citrate, commonly known as Viagra, is currently the first choice drug for erectile dysfunction but despite its success oral delivery of the drug is hampered by numerous side effects, the long delay before it starts working and the short amount of time it lasts. Researchers in Egypt think they may have a solution via nanotechnology.

Nanotech for transdermal sildenafil - Viagra

UK | Posted on July 27th, 2011

Writing in the International Journal of Nanotechnology, the team describes tests on different formulations for sildenafil citrate transdermal nanocarriers as the delivery agent on human skin rather than the user having to swallow a pill. The benefits of such nanocarriers are that the drug gets into the bloodstream through the skin much more quickly than having to be ingested. Moreover, 70% of an oral dose of sildenafil citrate is wasted as it is metabolized by the liver without having any effect. Improved delivery via the transdermal route would avoid several side-effects as well as making onset of activity much quicker.

Pharmaceutical scientist Yosra S.R. Elnaggar of Alexandria University and professors there and at Alexandria and Pharos University, explain how previous attempts to create a Viagra transdermal application have been hampered by the properties of the drug itself. The drug has low oil and water solubility and is loathe to cross membranes, such as human skin, because of this. However, it is possible to encapsulate the drug in nanoemulsion based systems that can cross membranes readily. As such, the team has investigated two types of nanocarriers made using fat-like lipid molecules - the first made by forming an emulsion with the drug using a surfactant compound to allow the lipid molecules and drug to mix, much as soap will emulsify oil and water. The second option is a self-emulsifying nanocarrier that has its own inbuilt surfactant.

The team demonstrated in the laboratory that both formulations would have benefits for oral drug delivery, whereas only the nano-emulsion, rather than the self-emulsifying formulation, shows promise for a Viagra patch, in other words.

Full bibliographic information"Sildenafil citrate nanoemulsion vs. self-nanoemulsifying delivery systems: rational development and transdermal permeation" in Int. J. Nanotechnol., 2011, 8, 749-763

####

Contacts:
Albert Ang
+ 44 1234 240519


Yosra S.R. Elnaggar

Copyright © AlphaGalileo

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Solid state physics: Quantum matter stuck in unrest August 1st, 2015

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Kalam: versatility personified August 1st, 2015

Nanomedicine

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

European Technology Platform for Nanomedicine and ENATRANS European Consortium Launch the 2nd edition of the Nanomedicine Award: The Award to be presented at BIO-Europe conference in Munich, November 2015 July 30th, 2015

Take a trip through the brain July 30th, 2015

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Discoveries

Solid state physics: Quantum matter stuck in unrest August 1st, 2015

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Announcements

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Harris & Harris Group Portfolio Company, HZO, Announces Partnerships with Dell and Motorola August 1st, 2015

Advances and Applications in Biosensing, Sensor Power, and Sensor R&D to be Covered at Sensors Global Summit August 1st, 2015

Human Interest/Art

Kalam: versatility personified August 1st, 2015

Pakistani Students Who Survived Terror Attack to Attend Weeklong “NanoDiscovery Institute” at SUNY Poly CNSE in Albany July 29th, 2015

Renishaw's inVia confocal Raman microscope system is being used in conservation activities at the Rijksmuseum in Amsterdam, the Netherlands June 16th, 2015

New sensing tech could help detect diseases, fraudulent art, chemical weapons June 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project