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Archive for the 'Health & longevity' Category

Update on promise of nanotechnology for radically extended life span

Posted by Jim Lewis on January 16th, 2009

The January issue of Life Extension Magazine offers a report on the eventual promise of medical nanobots.

Controlling the independent release of multiple drugs with nanotechnology

Posted by Jim Lewis on January 7th, 2009

Nanotech could make possible the controlled release within the patient of up to four different drugs by irradiation with different wavelengths of near-infrared radiation.

Interfacing with neurons using nanotechnology

Posted by Jim Lewis on January 1st, 2009

Research on the interactions between carbon nanotubes and neurons shows that electrical phenomena in nanotubes may lead to engineering interactions between nanomaterials and neurons.

Nanotechnology makes teeth too slippery for harmful bacteria

Posted by Jim Lewis on December 30th, 2008

Polishing teeth with silica nanoparticles produces much smoother surfaces than does polishing with larger silica particles, making it easier to remove harmful bacteria.

Nanotechnology-produced wires to swim through blood, attach to, and kill cancer cells

Posted by Jim Lewis on December 26th, 2008

Nanowerk News reports that an international nanotech collaboration of American and Korean scientists, funded by the Korean government, has developed multifunctional gold-coated nanowires that are designed to swim through the blood stream and attach to cancerous cells via antibodies against the cancer cells. Exposure to an electromagnetic field should heat the nanowires and destroy the [...]

Reading DNA sequences from single molecules of polymerase using nanotechnology

Posted by Jim Lewis on December 24th, 2008

A new nanotech method of DNA sequencing is 30,000 times faster than current DNA sequencing methods.

Targeting highly metastatic melanomas with nanotechnology

Posted by Jim Lewis on December 18th, 2008

Using a promising nanotech approach to deliver the RNA molecules, a type of nanoparticle described as a neutral liposome was administered to mice bearing melanoma tumors and found to cause a significant decrease in tumor growth and in the number of metastatic tumor colonies.

Tracking single molecules in living cells using nanotechnology

Posted by Jim Lewis on December 17th, 2008

Previously unknown spectral properties of carbon nanotubes functionalized with DNA have been exploited to create nanotech sensors that can simultaneously detect several different substances, in real time, within living cells, to single molecule sensitivity.

Nanotechnology advance toward individualized cancer treatments

Posted by Jim Lewis on December 11th, 2008

The effectiveness of treatment with multifunctional nanoparticles was studied using human breast tumors grown in rats lacking an immune system so that the variation in the effectiveness of treatment could be compared among individual breast tumors.

Nanotechnology delivers lethal dose of drug to prostate cancer cells

Posted by Jim Lewis on December 4th, 2008

In laboratory tests, nanoparticles that include a small molecule of nucleic acid that binds to a target molecule on prostate cancer cells were used to carry a lethal dose of the drug into the cancer cells without affecting cells lacking the cancer-specific target.

Nanotechnology-based assay for cancer proteins increases sensitivity a thousand fold

Posted by Jim Lewis on December 1st, 2008

A nanotech assay for trace levels of proteins associated with cancer is a thousand fold more sensitive than are current assays.

Texas invests in nanotechnology for delivery of anti-cancer drug

Posted by Jim Lewis on November 21st, 2008

A startup company has now received a $3.5 million grant from the state of Texas to commercialize the nanotech delivery of a drug for cancer treatment.

Nanotechnology minimizes problems with medical implants

Posted by Jim Lewis on November 12th, 2008

Nanotech membranes made of nanoporous alumina coated with diamond-like carbon films promise to minimize problems with medical implants.

Using nanotechnology to build backpacks for cells

Posted by Jim Lewis on November 10th, 2008

A patch consisting of three layers of polymers can be loaded with nanoparticles and attached to living cells to give them nanotech backpacks.

Nanotechnology shrinks tumors by targeting two genes

Posted by Jim Lewis on October 31st, 2008

Nanoparticles can introduce two very promising, but easily degraded, therapeutic molecules into a laboratory model of human skin, and together they are much more effective than either is alone is slowing the development of deadly melanoma skin cancer.

New microscope follows nanotechnology cancer treatment in living mice

Posted by Jim Lewis on October 28th, 2008

A noninvasive Raman microscope has allowed scientists to track carbon nanotubes injected into living mice.

Programming cell behavior with RNA nanotechnology

Posted by Jim Lewis on October 23rd, 2008

Nanotech applications based upon modules of RNA that bind small molecules to control the catalytic activity of other RNA modules may form the basis for a wide variety of synthetic molecular machines.

Nanotechnology delivers suicide gene to pancreatic cancer cells

Posted by Jim Lewis on October 16th, 2008

Combining a nanotech method of getting genes inside cancer cells with genetic engineering of a potent suicide gene driven by control signals that are very active only in cancer cells effectively killed cell lines derived from pancreatic cancer.

Nanotechnology may need to account for proteins that coat nanoparticles used for drug delivery

Posted by Jim Lewis on October 9th, 2008

Different chemical surfaces covering a nanoparticle can attract different types of blood proteins to coat the nanoparticle, which might affect how the nanoparticle moves through the body and where it ends up.

Nanotechnology provides more sensitive test for DNA changes in cancer and during treatment

Posted by Jim Lewis on September 29th, 2008

A nanotech method using quantum dots provides greatly increased sensitivity in the detection of methylated DNA, and may therefore aid in cancer diagnosis and in monitoring the effect of cancer therapies.