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Tag: "seems" at biology news

Bacteria that cause tooth decay able to survive without important biochemical pathway

...least in this organism, we learned the SRP pathway seems to enable it to respond rapidly to environmental stress, but it was not at all necessary for the organism's viability during non-stress conditions," Brady said. Brady's team surmised that two other molecules, called YidC1 and YidC2, might be acting ...

Should doctors tell patients about expensive, unfunded drugs?

...s has no easy solution, they say. Nevertheless, it seems unreasonable to withhold information from a patient about any potentially beneficial treatment because of concerns about capacity to pay, even if these discussions cause distress for some patients. Society at large should discuss whether new, high-...

Odd energy mechanism in bacteria analyzed

...ology at OSU. "This proteorhodopsin gene, however, seems to have a subtle role in the life and survival of SAR11, and appears to be an auxiliary system to aid cell survival." The level of interest in SAR11 is high, researchers say, because it dominates microbial life in the oceans, survives where most oth...

Mouse study: New muscle-building agent beats all previous ones

... to gain muscle mass. But although the new agent seems quite promising, its advantage in potency also requires extra caution. "We don't know what else the new agent is affecting or whether those effects will turn out to be entirely beneficial," says Lee. Lee says they also are conducting experiments wi...

New technique puts brain-imaging research on its head

...the brain when the skull is hit from the rear. It seems to be because the brain is trying to pull away from some constraints in the front of the brain." Bayly and his collaborators can apply the levels of deformation they have found with their subjects to in vitro experiments or to animal models to learn...

Scientists fetch useful information from dog genome publications

...s located on the X chromosome. "Sexual dimorphism seems to have evolved as females became smaller than males due to natural selection for optimal size," Lark explains. "This is consistent with our finding that a variant on the X chromosome plays a role in skeletal size determination." ...

Dog genome sequenced

...s located on the X chromosome. "Sexual dimorphism seems to have evolved as females became smaller than males due to natural selection for optimal size," Lark explains. "This is consistent with our finding that a variant on the X chromosome plays a role in skeletal size determination." ...

Bird song changes sound alarm over habitat fragmentation

.... The occurrence of anthropogenic habitat barriers seems to hinder cultural transmission of song types over distances, resulting in an intensification of the differences between non-neighbours and increasing mimicry between neighbours. This suggests that males from fragmented habitats perceived as rivals o...

Pregnancy drugs can affect grandkids

.... The occurrence of anthropogenic habitat barriers seems to hinder cultural transmission of song types over distances, resulting in an intensification of the differences between non-neighbours and increasing mimicry between neighbours. This suggests that males from fragmented habitats perceived as rivals o...

Hot-spring bacteria flip a metabolic switch

... different organisms living in a given mat, but it seems that they are engaging in community metabolism that changes depending on the time of day. Perhaps it is more correct to consider the mat as a single functional unit rather than as a group of individual organisms." ...

Predators keep the world green, ecologists find

...orniest questions: why is the world green? It also seems to put to rest a competing theory that plants protect themselves from herbivores through physical and chemical defenses. The researchers drew their conclusions from study of a Venezuelan valley flooded 20 years ago by a hydroelectric project. The ...

Pain killer fights breast cancer by targeting key enzyme

...ng the aromatase production in breast cancer cells seems to be unique to these diseased cells," Brueggemeier said. "It suggests that aromatase production in other tissues that rely on the enzyme could be spared if a nimesulide analog was taken as a drug." He said that the next step is to study how the an...

Taking a bite out of a fellow worker helps wasps recruit new foragers

...l to begin foraging immediately, noting the biting seems to have a cumulative effect. Some insects were bitten multiple times for hours before leaving the nest to forage. "Going off the nest to forage, where they are exposed to all kinds of stresses and dangers, is probably the biggest change these anima...

2005 was the warmest year in a century

... has warmed by 0.8° C or 1.44° F. Current warmth seems to be occurring nearly everywhere at the same time and is largest at high latitudes in the Northern Hemisphere. Over the last 50 years, the largest annual and seasonal warmings have occurred in Alaska, Siberia and the Antarctic Peninsula. Most ocean ...

'Bad' enzymes may wear white hats after stroke

... the protein implicated in Alzheimer's disease. It seems that beta amyloid might increase levels of MMP-9 where MMPs would harm rather than help, and statins might help counteract that. So statins could play a role in treating Alzheimer's disease." Wang learned of Lo's research during her undergraduate y...

Common bacteria pirate natural mechanism to get inside cells

...n." Interestingly, this self-regulatory mechanism seems to work best when a receptor, not a bacteria, is the instigator. Unlike receptors, bacteria and viruses don't degrade if they stay inside the vesicles because fusion with a second vesicle that enables the degredation doesn't happen, says Dr. Daaka, a...

Scientists discover interplay between genes and viruses in tiny ocean plankton

...hat regulates their populations. Genetic diversity seems to be an important factor." In one report, Chisholm and scientist Maureen Coleman suggest that gene-swapping in ocean microbes resembles the flow of genes already known to occur among disease-causing bacteria. In an ocean habitat, the exchange offer...

Screening blood for West Nile virus

...yet the time of year to worry about mosquitoes, it seems a good time to take a look at the current policy o...f infections contracted through contaminated blood seems well worth considering. In an accompanying commentary, Bruce Lee (of the University of Pittsburgh)...

Immune system response to viral DNA is unique

...ition pathways. "We found that this novel pathway seems to function differently from all other known nucleic acid sensors," Stetson said. "The unique immune response activated by foreign DNA suggests that DNA viruses and RNA viruses are detected by different mechanisms." Stetson said one important questi...

World faces challenge as life expectancies lengthen, scientist says

.... "One thing that happens right away, which nobody seems to have thought of, is that the total global population increases dramatically. From an original projection of 8 billion we end up topping out at 10 to 11 billion. In many countries, this would have an enormous, and not necessarily positive, impact. ...

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