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Tag: "similar" at biology news

RNA enzyme structure offers a glimpse into the origins of life

...sition-state stabilization and acid-base catalysis similar to those that exist for natural ribozymes and protein enzymes," he said....

Prenatal cocaine's lasting cellular effects

...dren often exhibit attention and arousal problems, similar to children with attention deficit hyperactivity disorder (ADHD). However, the standard treatments for ADHD -- Ritalin and other stimulants -- are not always effective in these children. Studying the effects of prenatal cocaine exposure on the de...

A case of mistaken identity for the ivory-billed woodpecker?

...ted Woodpecker Dryocopus pileatus, a superficially similar black and white species. The Pileated Woodpecker's wings were thought to beat more slowly that the 8.6 beats per second captured on Luneau's video, and its wings have black trailing edges. The trailing edges of the Ivory-billed Woodpecker's wings are...

Racing neurons control whether we stop or go

...y than their comrades. New research reveals that a similar race goes on in our brains, with impulse control being the big winner. "The research provides new insights into how the brain controls movements, which helps explain the impulsivity of people with attention deficit and hyperactivity disorder," study...

Erectile dysfunction in diabetes is due to selective defect in the brain

...sed as they exhibit sexual and behavioral symptoms similar to those found in diabetic men with sexual dysfunction. The researchers focused on the paraventricular nucleus (PVN) of the hypothalamus, located in the brain, an integration center between the central and peripheral nervous systems. The site is ...

Mummy's amazing American maize

...o determine if these much older specimens are also similar to modern crops. ...

OHSU lab finds meth receptor that could lead to therapy

...R1 hybrid and found all three receptors respond in similar ways. "The results of this study unequivocally demonstrate that meth and amphetamine are able to directly activate this receptor in the laboratory, making it likely that TAAR1 is activated in chronic users of meth," the researchers state in their ...

Out of Africa -- Bacteria, as well

...n in East Africa. Scientists have now uncovered similar signs of historical population migration in the genetic makeup of H. pylori. However, the genetic diversity of the bacteria is larger than that of man. This paves the way for researchers to use H. pylori data to work out the migratory movements of mo...

HIV protein enlisted to help kill cancer cells

...er enhance the cancer-killing power of TAT-Bim and similar proteins under development, Hawkins and his colleagues are working on a technique that will concentrate them within tumors while sparing healthy cells. In collaboration with Robert H. Mach, Ph.D. professor of radiology, they are linking the anticance...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...ems." Lyons sees what is happening now looking similar to what existed during the Eemian warming period ?a time 130,000 years ago before the last major glacial stage. "We know that the climate was warmer then, sea levels were higher by a couple of meters compared to today. Lyons points to the fact th...

Trojan horse strategy defeats drug-resistant bacteria

...h this, the researchers used gallium, a metal very similar to iron. "Gallium acts as a Trojan horse to iron-seeking bacteria," said Singh. "Because gallium looks like iron, invading bacteria are tricked, in a way, into taking it up. Unfortunately for the bacteria, gallium can't function like iron once i...

Common blood test can help distinguish between mononucleosis and tonsillitis

...help physicians accurately distinguish between the similar conditions infectious mononucleosis and bacterial ...e both common ear, nose and throat conditions with similar symptoms, according to background information in the article. These symptoms include sore throat, f...

Mystery of fossilized trees is solved

...ed temperatures to drop and the planet became very similar to its present-day condition." Dr Berry worked with colleagues from Binghampton University, New York and from New York State Museum, which discovered the two trunk fossils. Their findings are published in the April 19 edition of the scientific jou...

Gallium: A new antibacterial agent?

...eagues show that Gallium (Ga), which is chemically similar to Fe and can disrupt biological systems by substituting for Fe, inhibits the in vitro growth of Pseudomonas aeruginonsa; even multidrug resistant strains of P. aeruginonsa isolated from individuals with cystic fibrosis. Ga also prevented P. aerugino...

Cheaper, better disease treatments expected from faster approach to developing antibodies

... used the antibody evolution process to engineer a similar antibody that is in late-stage, clinical trials to treat human anthrax infections. Iverson is a co-author and a collaborator on the latest research. To test the bacterium-only system, lead author Yariv Mazor, a postdoctoral student in chemical eng...

Ethanol vehicles pose a significant risk to human health, study finds

...As a result, cancer rates for E85 are likely to be similar to those for gasoline. However, in some parts of the country, E85 significantly increased ozone, a prime ingredient of smog.'' Inhaling ozone-even at low levels-can decrease lung capacity, inflame lung tissue, worsen asthma and impair the body's i...

Scientists map key landmarks in human genome

...Analysis revealed that promoters of genes that had similar expression status (they were all "off" or "on") had related nucleosome locations. The technique successfully pinpointed the location of some nucleosomes previously found through other means, but the new method can be applied to the entire genomes of ...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

...que and can be distinguished from each other. It’s similar to bar-coding -- once you barcode the beads and put them in the urine or blood sample, you can remove them and decode what proteins or viruses have attached to individual beads based on their spectral signature," explained Sathe. The process of cr...

New synthetic self-assembling macromolecules mimic nature

...polymers self-assemble by like-charge interactions similar to such natural polymers as DNA," said Turner. "The stable self-assembled structures could have potential applications in drug delivery and gene delivery systems." But more immediate, "These unique block copolymers can be instructive models in und...

Chemical switch triggers critical cell activities

... but also because enzymes related to E1 and E2 run similar relays with other important protein batons, said Brenda Schulman, Ph.D., associate member of the St. Jude Structural Biology and Genetics and Tumor Cell Biology departments. "Our study shows that this simple switch could control comparable relays in ...

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