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Tag: "itself" at biology news

Losing sleep undoes the rejuvenating effects new learning has on the brain

...eurogenesis increases. This suggests that learning itself rejuvenates the brain." Knowing that spatial learning triggers production of new brain cells in the hippocampus, Hairston and her team wanted to find out whether restricting sleep during a spatial learning task would affect new cell production in th...

Exotic crab poised for widespread UK invasion

...n fur, or mittens - has the potential to establish itself in all major UK estuaries in several years time. Mitten crabs are unwelcome because they prey on protected UK native species such as the white-clawed crayfish and salmon eggs and fry. They also settle in river banks, burrowing into them and riddli...

New insight into machinery of immune cells' 'tentacles'

.... Such communication enables the T cell to program itself to target invading microbes for destruction. Antigens are proteins in invading microbes that the immune system detects to trigger a counterattack. The researchers said their findings of the machinery of formation of such "actin filaments" could offe...

Can dogs smell cancer?

...ffing the breath of cancer participants. The trial itself was comprised of 86 cancer patients (55 with lung cancer and 31 with breast cancer) and a control sample of 83 healthy patients. All cancer patients had recently been diagnosed with cancer through biopsy-confirmed conventional methods such as a mammo...

Growth factor-promoting angiogenesis expressed in tumor cells and normal neurons

...romoting tumor progression extend beyond the tumor itself and involve a complex interaction between the cancer cells and the normal cells that are perturbed by expanding tumor. These results suggest that SCF is a potent glioma-associated angiogenic factor that plays a prominent role in pathological angioge...

World Trade Center identifications pushed forensic DNA technology

... apparent that degraded DNA made the use of STR by itself impossible in many victim identifications. Shaler and colleagues decided to look at two other DNA methods -- mitotyping and SNPs. Mitotyping involves looking at mitochondrial DNA, DNA inherited only from the mother, and comparing it to a standard...

Restoring seagrass beds: Is it for the birds?

...d much of the terrestrial vegetation on the island itself was destroyed by Hurricane Ivan in 2004. Drs. Heck and Dindo received a grant from the Gulf of Mexico Program to restore both the dune habitation and the prop-scarred grassbeds of this popular location. Dune restoration will begin on Tuesday, April...

Hopkins researchers discover genetic switch that turns off an oxygen-poor cell's combustion engine

...being prodded into overdrive by HIF-1. And left to itself during hypoxia, the mitochondrion produces reactive oxygen species that threaten the life of the cell. "But our discovery clearly shows that hypoxia doesn't simply trigger a passive shutdown of the mitochondrion," said Dang. "Instead, HIF-1 acts as...

Groovy protein essential for promoting cancer development

...of fragments of the enzyme for one that would lend itself to successful structural analysis. His strategy took advantage of the fact that when multiple copies of the fluorescent protein clump together, the fluorescence is quenched, or extinguished. So Jacobs engineered bacteria to produce fragments of the t...

Faults in newly discovered breast stem cells may lead to tumours

...inate the bulk of cancer cells, the tumour factory itself ?a breast cancer stem cell ?may survive months or years later. In the context of international breast cancer research, the discovery of the breast stem cell is quite profound and will most likely form the basis of research in the area for years to ...

Report lists top 20 most-vulnerable African carnivores

...of fragments of the enzyme for one that would lend itself to successful structural analysis. His strategy took advantage of the fact that when multiple copies of the fluorescent protein clump together, the fluorescence is quenched, or extinguished. So Jacobs engineered bacteria to produce fragments of the t...

Molecular force field helps cancer cells defend against attack

...ture different ways of targeting either the enzyme itself or targeting the binding between these various proteins will have a major impact on cancer, I believe," Cance said. "We think it's one of the Achilles' heels for tumor cells and you can disrupt it in a number of different ways. For example, we might ...

FDA approves first medical device using rutgers biomaterial

...dicine, in which materials help the body to repair itself and are then resorbed. The device consists of a surgical mesh coated with a polymer developed using a Rutgers bioresorbable technology. The polymer gives the surgical mesh improved handling characteristics that facilitate precise placement during t...

Salmonella bacteria use RNA to assess and adjust magnesium levels

...p the creation of the protein if it isn't. That in itself isn't remarkable--scientists have been aware for decades of sensors in the cell that can cause molecules to bind to DNA to turn protein production on and off. A riboswitch, however, doesn't rely on anything binding to DNA; instead, the switch is in...

New crop of technology reveals plant health

...That reflects the current state of photosynthesis, itself a reflection of the plant's health. These sensors communicate their data through specially developed wireless transmitters. Scientists at lead project partner the Tyndall National Institute managed to reduce the essential technology from 100mm Fiel...

Weighting cancer drugs to make them hit tumors harder

..., the study showed. Chilkoti said chemotherapy by itself is small enough to travel throughout the body via the bloodstream, causing toxicity to vital organs such as the liver, bone marrow and heart. Likewise, chemotherapy's stay inside tumors is brief because it flows out as rapidly as it entered. In cont...

Evolutionary scrap-heap challenge: Antifreeze fish make sense out of junk DNA

...g proteins when the DNA coding for them duplicates itself and changes over time to give new functions. However, Professor Christina Cheng and her group have found the gene for the cod antifreeze protein has come from a non-coding region of their DNA known as "junk DNA". "This appears to be a new mechanism ...

Mystery solved: Gold's power against autoimmune diseases defined

... awry and the immune system turns towards the body itself causing autoimmune diseases such as Juvenile diabetes, Lupus, and rheumatoid arthritis. During their search through thousands of compounds they found that the known cancer drug, Cisplatin, a drug containing the metal platinum, directly stripped fore...

Genetically altered mice no longer like cocaine

...ocaine reward. "Deleting the dopamine transporter itself caused tremendous changes in the mouse brain," Gu said. "It's possible that, somehow, the animals' brains rewired themselves and, as a result, the mice still felt the effects of cocaine." The current study suggests that cocaine's blockade of dopamin...

ANU scientists crack DNA replication mystery

...o one of the DNA bases flipping over and inserting itself like a key in a lock in a perfectly shaped pocket on the surface of TUS. TUS is locked onto the DNA and this stops the replisome snowplough in its tracks." Professor Dixon said the discovery was important "not just because it solved a fundamental sc...

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