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Tag: "considerably" at biology news

Cyclosporine inhibits hepatitis C virus in vitro

...ntiviral effect than either one alone." Of note, considerably more patients taking Tacrolimus had to reduce or stop the therapy due to side effects. Also of possible significance, more patients taking Cyclosporine died, mostly due to infections and hepatitis complications, though this may be attributable to a l...

One in 14 men having a heart attack drive themselves to hospital

...ated when they got to the hospital, they also took considerably longer to get there in the first case" says Dr O'Donnell. "Prompt treatment is essential in heart attacks and these delays mean that women are more likely to suffer complications." Key findings from the home to hospital study ?which comprised 277...

Nano-particles effective in killing cancer with one-two punch of chemotherapeutics

...ymers. The individual polymers are degradable and considerably larger than individual phospholipids but have many of the same chemical features. This results in a structure that looks like a very small cell or virus. Discher and his colleagues take advantage of the polymersome properties to ferry their drug c...

A new look at the state of the oceans

...und Research on biodiversity has been intensified considerably over the past years. Reasons for this include an increasing concern over species extinctions and habitat destruction on the one hand, and the improvement of detailed recording methods for existing species on the other. Particularly genetic methods ha...

Brain-computer link lets paralyzed patients convert thoughts into actions

...en Nagle's level of control, the authors note, "is considerably less than that of an able-bodied person using a manually controlled computer cursor." Despite remarkable progress, "this isn't being done for the patient's benefit," said University of Chicago neurosurgeon Richard Penn, who implanted the sensor in ...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...only if diagnosed early. Since the prognosis grows considerably worse once the cancer has spread to other organs, the prevention of metastasis-the phenomenon in which cancer cells separate from a tumor mass, move through the bloodstream, anchor down in a distant tissue or organ to begin a new cancer-remains a cri...

Researchers find that bumblebees' flower choice matters

...plant ?called self-pollination ?seed production is considerably lower and the resulting seedlings are much less vigorous. Using genetic analysis to establish paternity, Karron has demonstrated that adjacent flowers differ markedly in their mating patterns. "It's amazing what we've found," he says. "When a bee...

Viral marker of human migration suspect

...als that while human populations started to expand considerably about 50,000 years back, the viral population expanded only in the last few hundred years. "Besides, there are several instances of one population group harboring a subtype typically associated with another group," she said. "For example one finds...

New dwarf buffalo discovered by chance in the Philippines

...ree feet tall at the shoulder and 500 pounds it is considerably larger than the newly discovered species. The highly endangered tamaraw lives only on the Philippine island of Mindoro. Two poorly known species of the genus Bubalus from the Indonesian island of Sulawesi, known as anoas, are more distantly related....

For crickets, parasitic flies can stop the music

...ntifically as Gryllus rubens, they discovered that considerably fewer male crickets sing in the autumn when the parasitic flies are abundant. They also found that female crickets are reluctant to approach singing males in the fall, perhaps unknowingly avoiding becoming the target of the flies themselves. The f...

Malaria may fuel spread of HIV in sub-Saharan Africa

...gical co-factor induced by malaria has contributed considerably to the spread of HIV by increasing HIV transmission probability per sexual act," said Abu-Raddad, an HIV/AIDS research scientist in the Hutchinson Center's Statistical Center for HIV/AIDS Research and Prevention and the Center for Studies in Demograp...

Eating protein boosts hormone that staves off hunger

...and 16% from protein, Batterham said. That differs considerably from the diet of hunter-gatherers, who ate as much as twice the amount of protein. Batterham cautioned, however, that large, long-term clinical trials are required before any particular diet could be recommended. She also noted that such a diet wou...

Weighty viruses

... type of trap, the movement of the trapped ions is considerably more complex and not mathematically ascertainable. However, it has the advantage of a much simpler geometry. The team constructed a CIT with smaller dimensions than usual, optimized the geometry, and exchanged the usual terminal electrodes of the cyl...

Harvard scientists identify compounds that stimulate stem cell growth in the brain

...receptors, whereas the level of LTB4 receptors was considerably lower in similar cells not generated by LTB4 stimulation. The investigators were further able to show that LTB4 up-regulated several molecules involved in cell cycling and growth, such as cyclins and epidermal growth factor receptor, and decreased th...

Unique gene regulation gives chilly bugs survival advantage at bottom of the world

...r times longer than the adults. "The adults were considerably less heat-tolerant than the larvae," Denlinger said. "The larval midges continuously express heat-shock proteins and are therefore prepared to respond to the normal kinds of challenges that they face in the harsh Antarctic environment. But the adults...

Single molecule extends fat mice lives by reversing gene pathways associated with disease in obese

...d diabetes glucose test on the HCR fed group found considerably higher insulin sensitivity, meaning the HCR group ...ors showed that the livers of the HCR fed mice had considerably more mitochondria than the HC group, and were not significantly different from those of the SD group...

Satellites shed light on global warming

...shows planetary wave speed is expected to increase considerably during this century as a side effect of climate change induced warming of the oceans, which may have a number of far-reaching effects on ocean dynamics. "It is no surprise, then, that scientists are eager to better understand these phenomena - an...

Bumblebee house warming -- it takes a village

...h tasks, said O'Donnell. Bumblebee workers vary considerably in size, and body size affects which tasks individuals perform. "We expected that larger workers would be incubators, but we found to our surprise the opposite was true," O'Donnell said. "We don't know whether the smaller bees are really better a...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...sulted in increased cell size and, subsequently, a considerably expanded genome. The researchers also discovered more than 150 instances where bacterial genes may have transferred into the parasite's genome, suggesting that bacteria may have influenced the development of the parasite's metabolism. The decoded...

Loss of a universal tRNA feature reported

...ion by the enzyme adding histidine to tRNA differs considerably from similar enzymes in other organisms. We have indeed been able to detect an impact on particular regions of the histidyl-tRNA synthetase that are critical for recognizing tRNA." The researchers used bioinformatic tools such as a computer scr...

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