Nanotechnologie

7
Nov
2009

Nanoparticles used to target tumors can cause DNA damage across the body's protective barriers

Posted on November 6, 2009, 00:56, by schneider

A team of British researchers is raising new and serious questions about the health risks posed by nanoparticles.

The infinitesimal particles are at the core of a burgeoning new industry that has scores of businesses lining up outside laboratory doors, eager to apply nanotechnology to commercial projects, from cosmetics to antibacterial clothing to targeted delivery of pharmaceuticals.

But many scientists have raised serious questions about the health and environmental dangers posed by nanoparticles and the British study could elevate those concerns to a new plane. However, other researchers insist the conclusions are off-base an dnot relevant when assessing human health risks.

Read More...
http://www.coldtruth.com/2009/11/06/nanoparticles-used-to-target-tumors-can-cause-dna-damage-across-the-bodys-protective-barriers/


Informant: Iris Atzmon

 

http://omega.twoday.net/search?q=DNA+damage
http://omega.twoday.net/search?q=health+risk
http://omega.twoday.net/search?q=tumor
http://omega.twoday.net/search?q=tumour
http://omega.twoday.net/topics/Nanotechnologie/
http://freepage.twoday.net/search?q=Nano

21
Aug
2009

Erste Todesfälle durch Nanotechnologie

Nanotechnologie die ersten Opfer

Das jüngste der bestaunten Wunder mag Nanotechnologie inzwischen nicht mehr sein - als eine Gefahr für diejenigen erkannt, die damit arbeiten müssen wird es erst jetzt. Zwei von mehreren Frauen, die bei der Herstellung von Farben für die Druckindustrie erkrankten sind gestorben. Der kurze Bericht "Erste Todesfälle durch Nanotechnologie" vom August 2009 bei ungesundleben ist auch mit diversen Links zu den Sachfragen dahinter versehen:

http://www.ungesundleben.org/ungesund/index.php/Nachrichten_2009#Erste_Todesf.C3.A4lle_durch_Nanotechnologie


Aus: LabourNet, 21. August 2009



http://omega.twoday.net/search?q=Nanotechnologie

30
Jul
2009

Titan-Nanopartikel stören Hirnentwicklung bei Föten

-------- Original-Nachricht --------

Datum: Thu, 30 Jul 2009 10:00:23 +0200
Von: Dr. Max Daunderer
Betreff: Nanopartikel stören Hirnentwicklung bei Föten

Nanopartikel stören Hirnentwicklung bei Föten

Es stören Nano-Partikel die Umsetzung von Erbgutinformationen in Proteine. Betroffen sind unter anderem Gene, die bei neurologischen Störungen eine Rolle spielen. Der Entdecker Takeda erläuterte: "Zu den Krankheiten, die auf diese Gene zurückzuführen sind, zählen solche, die sich in der Kindheit entwickeln, wie Autismus, Epilepsie und Lernschwierigkeiten, aber auch solche, die vor allem bei Erwachsenen oder im Alter auftreten, wie Alzheimer, Schizophrenie und Parkinson."

Werden Materialien auf Nanometer-Maßstab (Millionstel) gebracht, verändern sich ihre chemischen und physikalischen Eigenschaften. Auch der Einfluss auf biologische Systeme wandelt sich - weil die winzigen Partikel zum Beispiel im Körper in viel mehr Bereiche vordringen und mit winzigen Molekülen wechselwirken können. ÄZ 30.7.09

http://www.particleandfibretoxicology.com/content/6/1/20/abstract

Dieser Effekt spielt gerade bei Zahnquecksilber die größte Rolle!


Informant: Dr. Joachim Mutter



http://omega.twoday.net/topics/Nanotechnologie/
http://omega.twoday.net/search?q=Quecksilber

25
Jun
2008

As nanotechnology gains ground, so do concerns

http://www.iht.com/articles/2008/06/24/business/greencol25.php


Informant: Teresa Binstock

 

http://omega.twoday.net/topics/Nanotechnologie/

Nanotech: Why something so small can be so dangerous

AlterNet
by Carole Bass

06/23/08

'It's green, it's clean, it's never seen - that's nanotechnology!' That exuberant motto, used by an executive at a trade group for nanotech entrepreneurs, reflects the buoyant enthusiasm for nanotechnology in some business and scientific circles. Part of the slogan is indisputably true: nanotechnology - which involves creating and manipulating common substances at the scale of the nanometer, or one billionth of a meter - is invisible to the human eye. But the rest of the motto is open for debate...

http://www.alternet.org/environment/89166/


Informant: Thomas L. Knapp

 

http://omega.twoday.net/topics/Nanotechnologie/

30
Mai
2008

12
Mai
2008

12
Mrz
2008

11
Mrz
2008

25
Jan
2008

Nanotech: Tiny particles, big risks

In These Times
by Terry J. Allen

01/24/08

Nanotechnology, one of the fastest growing industries in history, is a major threat to human health and the environment. Or not. The fact is, when it comes to nanotech, we don’t have any idea what the facts are. Nonetheless, manufacturers are rushing ahead to add inadequately tested particles, one nanometer to 100 nanometers in size, to a wide and growing array of consumer products. A nanometer is one billionth of a meter, or the length of a fingernail as it grows in a second. Manipulated at the level of atoms and molecules, these radical particles have fundamentally different physical, chemical and biological properties from the matter from which they were created. Benign materials may become toxic, while their nano-scale allows them to penetrate cells, even breaching the blood-brain barrier...

http://www.inthesetimes.com/article/3483/nanotech_tiny_particles_big_risks/


Informant: Thomas L. Knapp

--------

Nanotech: Tiny Particles, Big Risks

excerpt:

The nonprofit Consumers Union admonishes that "widespread, unregulated use of many nanoengineered materials will bring ... severe, irreversible, unintended consequences." Preliminary studies have linked them to DNA damage and unpredictable inflammatory and immune responses. Britain's Royal Society warns that nanotubes "are structurally similar to asbestos fibers." Rats exposed to nanoparticles have shown tumor-related effects, according to the journal Particle and Fibre Toxicology, which questions whether nanoparticles in sunscreen can cause systemic effects if absorbed through skin. Certainly, they end up in water, where early evidence suggests toxicity to fish.

http://www.alternet.org/story/75396/


Informant: Iris Atzmon



http://omega.twoday.net/topics/Nanotechnologie/
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