Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > News > Plant extracts as nontoxic nanoparticle coating for nanomedicine applications

February 11th, 2007

Plant extracts as nontoxic nanoparticle coating for nanomedicine applications

Abstract:
Gold nanoparticles have gained significant prominence in the design and development of nanoscale devices and nanosensors. The ubiquitous place of gold in nanoscience stems from its unique chemical property of serving in the unoxidized state at the nanoparticulate level. In sharp contrast, most of the surfaces of the less-noble metals are susceptible to oxidation to a depth of several nanometers or more, often obliterating the nanoscale properties. The high surface reactivity of gold nanoparticles, coupled with their biocompatible properties, has spawned major interest in the utility of gold nanoparticles for in vivo molecular imaging and therapeutic applications (see for instance our recent Nanowerk Spotlight "Medical nanotechnology: Killing cancer with gold nanobullets and nanobombs"). The core of nanomedicine embodies high surface area and the size relationship of nanoparticles to cellular domains so that individual cells can be targeted for diagnostic imaging or therapy of cancer and other diseases. The development of biocompatible and non-toxic nanoparticles is of paramount importance for their utility in nanomedicine applications. Despite the huge potential for gold nanoparticle-based nanomedicinal products, nontoxic gold nanoparticle constructs and formulations that can be readily administered are still rare. Hypothesizing that the ability of plants to absorb and assimilate metals will provide opportunities to utilize plant extracts as nontoxic vehicles to stabilize and deliver nanoparticles for in vivo nanomedicinal applications, researchers now have used Gum Arabic as a plant-derived, nontoxic construct for stabilizing gold nanoparticles. The development of readily injectable, in vivo stable and non-toxic gold nanoparticulate vectors, especially built from currently accepted human food ingredients, would be pivotal in their many uses (e.g. in vivo sensors, photoactive agents for optical imaging, drug carriers, contrast enhancers in computer tomography, X-ray absorbers).

Source:
nanowerk.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanomedicine

New imaging agent provides better picture of the gut July 30th, 2014

Zenosense, Inc. July 29th, 2014

Optimum inertial design for self-propulsion: A new study investigates the effects of small but finite inertia on the propulsion of micro and nano-scale swimming machines July 29th, 2014

FEI adds Phase Plate Technology and Titan Halo TEM to its Structural Biology Product Portfolio: New solutions provide the high-quality imaging and contrast necessary to analyze the 3D structure of molecules and molecular complexes July 28th, 2014

Discoveries

New imaging agent provides better picture of the gut July 30th, 2014

Watching Schrödinger's cat die (or come to life): Steering quantum evolution & using probes to conduct continuous error correction in quantum computers July 30th, 2014

From Narrow to Broad July 30th, 2014

A new way to make microstructured surfaces: Method can produce strong, lightweight materials with specific surface properties July 29th, 2014

Announcements

University of Manchester selects Anasys AFM-IR for coatings and corrosion research July 30th, 2014

Nature inspires a greener way to make colorful plastics July 30th, 2014

Analytical solutions from Malvern Instruments support University of Wisconsin-Milwaukee researchers in understanding environmental effects of nanomaterials July 30th, 2014

FEI Unveils New Solutions for Faster Time-to-Analysis in Metals Research July 30th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE