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Tag: "radioactive" at biology news

Study may help slay 'Yellow Monster'

...veries about uranium. The fact that uranium, as a radioactive metal, can damage DNA is well documented. But what...so damage DNA as a heavy metal, independent of its radioactive properties. Stearns and her team are the first to show that when cells are exposed to uranium, the...

Predicting successful outcomes in living-donor liver transplants

...d liver scintigraphy (an imaging technique using a radioactive substance that is swallowed) performed on 18 patients. The ICG test however, had certain benefits. "This novel noninvasive method has advantages in its simplicity, its real-time presentation of results without consuming a lot of time, and its cost-ef...

Radioactive scorpion venom for fighting cancer

...ing experimental brain-cancer therapy which uses a radioactive version of a protein found in scorpion venom. For... Corporation in Cambridge, Massachusetts created a radioactive version of this scorpion venom. Called TM-601, it contains an artificial version of the venom protei...

DOE JGI finishes 100th microbial genome

...tes of Health. Resists radiation; can bioremediate radioactive mixed waste. Desulfovibrio desulfuricans G20. Judy D. Wall, University of Missouri. Reduces sulfate, uranium, and toxic metals; corrodes iron piping; "sours" petroleum with hydrogen sulfide. Geobacter metallireducens. Derek Lovley, University of M...

Combined treatment extends life expectancy for lung cancer patients

...or brachytherapy, a procedure in which a "seed" of radioactive material is implanted into the cancer or near it. Patients were diagnosed with Stage I or II lung cancer, meaning the lung cancer in most cases had not spread and was usually smaller than 3 centimeters, though not in all cases. While this study did n...

High dopamine transporter levels not correlated with ADHD

...ography (PET) scanner. The PET camera picks up the radioactive signal from the tracer to precisely measure the level of dopamine transporters. The PET scans revealed that ADHD subjects had significantly fewer dopamine transporters than control subjects in the nucleus accumbens, an area of the ventral striatum ...

Bacteria that use radiated water as food

... surface. Think that's weird? The bacteria rely on radioactive uranium to convert water molecules to useable energy. The discovery is a confirmed expansion of Earth's biosphere, the three-dimensional shell that encompasses all planetary life. The research has less Earthly implications, however. It will likel...

Otherworldly bacteria discovered two miles down

...ion comes from the decomposition of water (H2O) by radioactive decay of uranium, thorium, and potassium." Humans and most other land-dwelling organisms ultimately get their energy from the Sun, with photosynthetic plants forming the base of the food web. But in dark places where sunlight doesn't reach, lif...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...clopride, to which had been attached a short-lived radioactive form of carbon. The drug binds to the same receptors that dopamine does, so the more of it that could be seen in a specific brain area, the less dopamine was present and vice versa. The researchers also scanned each volunteer's brain using magnet...

Fantastic Voyage: A new nanoscale view of the biological world

...ne. The method does not need staining or use of radioactive labelling. Instead, it is possible to use stable isotopes to track molecules. For example, researchers could track stem cells by labelling DNA with 15N. "These stable isotopes do not alter the DNA and are not toxic to people; with MIMS and stable iso...

Einstein researchers demonstrate a novel approach to treating AIDS

Using a radically new strategy featuring radioactive "guided missiles," researchers at the Albert Einst...) One hour later, the mice were injected with the radioactive antibodies. Three days after treatment, the researchers measured the number of HIV-1-infected cel...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...les can also be made to carry anti-cancer drugs or radioactive materials directly to a tumor. Magnetic nanoparticles designed to attach to cancerous tissue can also be made to heat up by using a remote, alternating magnetic field, thereby selectively killing cancer cells in a process called magnetic hyperthermia...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

... and 1983 leaches into groundwater that extends in radioactive plumes for miles from the contaminated site. But...oil subsurface that scrub it of potentially deadly radioactive metal. If bioremediation proves successful on the uranium, technetium, nitrate and other potentia...

Researchers uncover protection mechanism of radiation-resistant bacterium

...ignificant in efforts to contain toxic runoff from radioactive Cold War waste sites. Fifty years ago, scientists discovered D. radiodurans, leading to speculation that the incredible degree of resistance exhibited by the bacteria has to do with its mechanism of DNA repair, and the majority of research on the ...

Radiation therapy combo cures prostate cancer long-term

...eed implants, also called brachytherapy, are small radioactive pellets, each about the size of a grain of rice. The seeds are inserted into the prostate through small needles during a brief outpatient procedure. External beam radiation therapy involves a series of 25 short daily outpatient treatments, where a ra...

Heart failure: Intervention possibilities from imaging programmed cell loss

...re diagnosed each year. Researchers attached a radioactive substance to annexin A5, a protein that binds to dying cells, said Hofstra. They then used nuclear imaging that produces three-dimensional computer-reconstructed images to reveal information about both structure and function to measure the amount of ...

Investigating the measles virus as a tool to kill multiple myeloma

...arget in cancer therapy because it can concentrate radioactive iodine, thus providing a way to selectively irradiate cancer cells, image the tumors and monitor regression. Eligible candidates for the multiple myeloma study will be adults with relapsed or refractory (that is, having had more than one type of ...

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