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Tag: "kill" at biology news

New biochip helps study living cells, may speed drug development

...n be removed intact. Since the technology does not kill the cells, it could be used to screen and identify different crop lines, Porterfield said. "For example, let's say you were interested in developing corn varieties that need less fertilizer," he said. "If you had a library of genes that were assoc...

On the golf tee or pitcher's mound, brain dooms motion to inconsistency

...novel. Predators never get the chance to catch and kill prey in exactly the same fashion and in exactly the same conditions. "The nervous system was not designed to do the same thing over and over again," Churchland says. "The nervous system was designed to be flexible. You typically find yourself doing...

Mayo Clinic study suggests that a central nervous system viral infection can lead to memory deficits

...problem, Dr. Howe says. In general, viruses that kill neurons in the hippocampus are not uncommon. For example infections caused by the herpes virus or human immunodeficiency virus (HIV) can lead to the loss of brain cells, but while brain damage from these viruses is based on a persistent infection, br...

Different strategies underlie the ecology of microbial invasions

...from other lineages. One widespread solution is to kill these competitors. In the new work, the resear...y release a burst of infectious parasites that can kill competitor bacteria. Unlike chemical killing, released parasites trigger an epidemic among susceptib...

Plutonium or greenhouse gases? Weighing the energy options

...tions," Ewing said. "A typical nuclear weapon will kill many, many hundreds of thousands of people, and the global impact would be comparable to something like Chernobyl in the spread of fallout." So the real question, said Ewing, is: "Plutonium versus carbon---which would you rather have as your probl...

Disappearing nest egg: Researcher studying declining numbers of macaws

...erican natives seek them out either for food or to kill them for their bright feathers. Brightsmith has conducted several detailed studies on the birds, which technically are members of the Psittacidae family that includes parrots, macaws, parakeets and close relatives. He's the first to admit he's a m...

Fragmentation rapidly erodes Amazonian biodiversity

... the surrounding pastures blow into the forest and kill many trees, which just can’t handle the stress,?said Henrique Nascimento, a team member from Brazil’s National Institute for Amazonian Research in Manaus. “Also, winds build up around the fragment and knock down a lot of trees.? The trees that reg...

MIT nanoparticles may help detect, treat tumors

... hold the promise of carrying medicines that could kill cancer cells, replacing radiation or chemotherapy treatments that cause negative side effects such as hair loss or nausea. The researchers hold a provisional patent on their work. ...

Bacterial protein shows promise in treating intestinal parasites

.... "Crystal proteins had been used for decades to kill insects by organic farmers who sprayed their crops with Bt," said Aroian. "Until now, however, no one has used a purified Cry protein to treat a parasitic nematode." Aroian met Cappello, a pediatric infectious diseases specialist who studies hookwo...

Biotech cotton provides same yield with fewer pesticides

...cticide-containing crops like Bt cotton would also kill beneficial and non-target arthropods. The new study found that Bt cotton, also known as transgenic cotton, does not affect the biodiversity of insects in cotton fields. Carrière said, "There were lots of factors that affected biodiversity in thi...

Fire ant-attacking fly spreading rapidly in Texas

...icides. The fly larvae develop inside the ants and kill their host. Dr. Ed LeBrun, a researcher at BFL, developed the new flytraps that allowed him to map the spread of the first species of phorid fly successfully introduced. The fly, Pseudacteon tricuspis, was introduced to several locations in Texas b...

Targeted virus compels cancer cells to eat themselves

...ionally replicating adenoviruses (CRAs) infect and kill cancer cells. Autophagy is a protective process that cells employ to consume part of themselves when nutrients are scarce or to destroy some of their organelles to recycle their components. A double membrane forms around the material to be consumed...

Parasitic plants sniff out hosts

...difficult pest to eliminate because chemicals that kill the parasite also often kill the host plant. "There is currently no reliable way to get rid of these pests," says Justin B. Runy...

Ghost protein leaves fresh tracks in the cell

...h to the membrane. "We thought that was going to kill the function of the protein," he said, "but it didn't affect the ability of the protein to reach its destination at all. The molecule targeted correctly to the cell membrane." In fact, the genetically engineered flies often survived to adulthood, whi...

Mayo Clinic Cancer Center: Harnessing the measles virus to attack cancer

...ular medicine studies in patients using measles to kill cancer. "We are looking at better ways to treat some of the most lethal cancers," says Eva Galanis, M.D., oncologist and lead researcher on the glioblastoma multiforme project in the measles virus investigation. "We have shown in the laboratory and...

Common carp sheds new light on surviving in extreme environments

...ery challenging conditions that would harm or even kill lesser creatures. This is because the fish has evolved in small-to-medium sized ponds in a harsh continental-type climate in Asia where the winters are very cold and the summers are hot and steamy. "Its ability to cope with such extreme condition...

MRSA vaccine shows promise in mouse study

... a laboratory strain of the bacteria calculated to kill 50 percent of the mice, were still alive one week ...survive in the presence of antibiotics designed to kill it. In 1972, according to the Centers for Disease Control, only two percent of S. aureus infections ...

New angiogenesis finding may help fight cancer growth

... pressure and low blood oxygen levels harm or even kill pregnant women and their babies. Philip Lowry, at the University of Reading in the United Kingdom, has found that NK-B levels spike in preeclampsia, and the new understanding of NK-B's role in angiogenesis suggests that faulty blood-vessel formation ...

Bacteria could make new library of cancer drugs that are too complex to create artificially

... recent interest as they can be used to target and kill cancer cells. A synthetic prodiginine analogue called GX15-070 is currently in phase 1 and 2 cancer treatment trials. However, analogues of other prodiginines, such as streptorubin B, could be even more powerful anti cancer tools, but they cannot cur...

Protein's role in regulating cell death sets direction for cancer research

...eutic drugs or radiation treatment to specifically kill tumour cells in cancer patients. ...

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