Guérir le cancer avec des nanoparticules d'or

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cgelinas
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Guérir le cancer avec des nanoparticules d'or

Message par cgelinas » 16 décembre 2010, 18:58

Chers amis, cet article paru dans NaturalNews va vous intéresser, au plus haut point:
  • Cinnamon may be a treasure of green nanotechnology

    Thursday, December 16, 2010 by: S. L. Baker, features writer

    (NaturalNews) Gold nanoparticles, so incredibly tiny they can't be seen by the naked eye, are used in electronics, healthcare products and as pharmaceuticals in some cancer treatments.

    Unfortunately, the positive applications of gold nanoparticles come with a downside -- producing the nanoparticles requires extremely toxic chemicals and harmful acids. And, because the nanotechnology industry is expected to produce large quantities of nanoparticles in the immediate future, serious concerns are being raised over the environmental impact of the global nanotechnological revolution and its current need for toxic materials.

    But now University of Missouri (UM) scientists have found a way to make "green" nanotechnology by replacing almost all of the toxic chemicals required to make gold nanoparticles. How can this be accomplished? By using a spice found in most kitchens -- cinnamon.

    For their study, which was recently published in the journal Pharmaceutical Research, MU scientist Kattesh Katti, professor of radiology and physics in the School of Medicine and the College of Arts and Science, senior research scientist at the University of Missouri Research Reactor and director of the Cancer Nanotechnology Platform, and his research team combined gold salts with cinnamon and stirred the mixture in water to synthesize gold nanoparticles. This new process not only uses no toxic materials, but it doesn't require any electricity, either.

    There's another benefit, too. "Our gold nanoparticles are not only ecologically and biologically benign, they also are biologically active against cancer cells," Dr. Katti announced in a statement to the media.

    While conducting their research, the scientists discovered that natural phytochemicals in cinnamon are released when the nanoparticles are created -- and these phytochemicals combined with gold nanoparticles form a promising treatment for cancer. That's because the phytochemicals are carried by the gold nanoparticles into cancer cells and assist in the destruction or imaging of malignancies.

    "From our work in green nanotechnology, it is clear that cinnamon -- and other species such as herbs, leaves and seeds -- will serve as a reservoir of phytochemicals and has the capability to convert metals into nanoparticles," Dr. Katti said in a statement to the media. "Therefore, our approach to 'green' nanotechnology creates a renaissance symbolizing the indispensable role of Mother Nature in all future nanotechnological developments."

    Dr. Katti, who is the editor of The International Journal of Green Nanotechnology, added that as more uses for nanotechnology are created, it is crucial that scientists find ways to establish a workable connection between nanotechnology and green science.
Sérieusement, wow!

Est-ce qu'on peut demander mieux que ça pour combattre le cancer et de nombreux autre maux?
Claude Gélinas, Éditeur
chaudiere.ca

Blogues: Montréal | Québec | Lévis | Emploi | Éducation | Placements | Transports
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cgelinas
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Les nanoparticules d'or et la cannelle

Message par cgelinas » 16 décembre 2010, 19:02

Voici l'extrait d'information publié dans PubMed, pour votre information:
  • Pharm Res. 2010 Sep 25. [Epub ahead of print]

    An Effective Strategy for the Synthesis of Biocompatible Gold Nanoparticles Using Cinnamon Phytochemicals for Phantom CT Imaging and Photoacoustic Detection of Cancerous Cells.

    Chanda N, Shukla R, Zambre A, Mekapothula S, Kulkarni RR, Katti K, Bhattacharyya K, Fent GM, Casteel SW, Boote EJ, Viator JA, Upendran A, Kannan R, Katti KV.

    Department of Radiology, University of Missouri, 301 Business Loop 70W, Columbia, Missouri, USA, [email protected].

    Abstract

    PURPOSE: The purpose of the present study was to explore the utilization of cinnamon-coated gold nanoparticles (Cin-AuNPs) as CT/optical contrast-enhancement agents for detection of cancer cells.

    METHODS: Cin-AuNPs were synthesized by a "green" procedure, and the detailed characterization was performed by physico-chemical analysis. Cytotoxicity and cellular uptake studies were carried out in normal human fibroblast and cancerous (PC-3 and MCF-7) cells, respectively. The efficacy of detecting cancerous cells was monitored using a photoacoustic technique. In vivo biodistribution was studied after IV injection of Cin-AuNPs in mice, and also a CT phantom model was generated.

    RESULTS: Biocompatible Cin-AuNPs were synthesized with high purity. Significant uptake of these gold nanoparticles was observed in PC-3 and MCF-7 cells. Cin-AuNPs internalized in cancerous cells facilitated detectable photoacoustic signals. In vivo biodistribution in normal mice showed steady accumulation of gold nanoparticles in lungs and rapid clearance from blood. Quantitative analysis of CT values in phantom model revealed that the cinnamon-phytochemical-coated AuNPs have reasonable attenuation efficiency.

    CONCLUSIONS: The results indicate that these non-toxic Cin-AuNPs can serve as excellent CT/ photoacoustic contrast-enhancement agents and may provide a novel approach toward tumor detection through nanopharmaceuticals.

    PMID: 20872051 [PubMed - as supplied by publisher]
Vraiment incroyable!

Et dire que nous traitons encore nos cancéreux québécois à coups de chimiothérapies, de radiothérapies et de chirurgies invasives — la guerre contre le cancer devrait prendre le chemin des nanotechnologies, dès que possible.
Claude Gélinas, Éditeur
chaudiere.ca

Blogues: Montréal | Québec | Lévis | Emploi | Éducation | Placements | Transports
Web: Achetez vos noms de domaines au plus bas prix...

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