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Tag: "reach" at biology news

Movie spies on malaria parasite's sneaky behavior

...cells could stop most of the parasites before they reach the bloodstream--the place where they are most destructive. How the parasites direct the dead liver cell to form the merosome structure and how that bag eventually bursts open in the blood are questions that remain to be answered. But the pow...

Researchers appeal for new regulations to save coral reefs from live fish trade

...at 100 km per year from its coast in the 1970s, to reach over 400 km per year in the 1990s. However, the scientists say the strongest argument for balancing international trade and local needs is the social inequity that arises from the export of the dwindling coral reef resources of developing tropical ...

One-dimensional diffusion accelerates molecular motors

...f microtubule gets regulated, nor how the proteins reach the end of the microtubules to be regulated. The Max Planck researchers looked at the example of the protein MCAK, and how it locates microtubule ends. Howard and his colleagues followed single MCAK molecules under the microscope and could see that ...

Innovative method for creating a human cytomegalovirus vaccine outlined

...t of adults are infected with CMV by the time they reach 40 years of age, but the virus generally poses little threat to them. The exceptions are AIDS patients, transplant recipients, and others with compromised immune systems are at risk for complications. The virus is a member of the herpes virus family,...

The higher the hierarchy, the greater the aggression

...archy. They can only pass on their genes when they reach the top of the hierarchy, usually after those ahead of them in the rank have died and they have inherited the right to reproduce. "Certain group members inflict or receive many more acts of aggression than others. In some cases, these acts (which i...

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

... the treatment to see how well they could walk and reach to retrieve food pellets with their paws. A subset of the rats was tested again 2 and 4 months following the treatment. Rats treated with 7-OH-DPAT had more than twice as many proliferating cells in the substantia nigra as rats that were treated w...

'LEGO-Like' building blocks to halt cell growth wins Hebrew University prize

...ifferent types of molecules can be built that will reach specifically targeted cells, offering hope for treatment of not only cancer, but other diseases as well, without harming healthy cells. ...

Trials for new drug to overcome HIV

... that larger trials are needed and PA-457 will not reach the market until 2009 at the earliest. Other HIV researchers are also enthusiastic about PA-457. "It's a truly novel new class of drugs, and I really support their development," says Charles Boucher of the University Hospital Utrecht in the Netherla...

New strategy developed to combat West Nile Virus

...cal level, at the appropriate scale, before we can reach the same conclusions that we found in southern Florida. But in almost all cases, the amplification of West Nile Virus will start with mosquitoes that carry the disease mingling with birds that are good carriers. "How fast and far it spreads from the...

Salk scientists untangle steroid hormone signaling in plants

...sponse to light, enabling them to adjust growth to reach light or strengthen stems. Exploiting its potent growth-promoting properties could increase crop yields or enable growers to make plants more resistant to drought, pathogens, and cold weather. Unfortunately, synthesizing brassinosteroids in the lab...

Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study

...sponse to light, enabling them to adjust growth to reach light or strengthen stems. Exploiting its potent growth-promoting properties could increase crop yields or enable growers to make plants more resistant to drought, pathogens, and cold weather. Unfortunately, synthesizing brassinosteroids in the lab...

Thermal imaging shatters arousal gender gap myth

...nt of time it takes healthy young men and women to reach peak arousal," said Dr. Irv Binik, psychology professor and founder and director of the Sex and Couple Therapy Service of Royal Victoria Hospital, which is part of the McGill University Health Centre (MUHC). Thermal imaging, or thermography,...

Combination therapy shows promising results in patients with advanced lung cancer

...nly about 15 percent of people who get lung cancer reach five-year survival. Those with advanced disease usually survive less than a year. "It's crucial that we develop better treatments for this disease," Reckamp said. ...

Ghost protein leaves fresh tracks in the cell

...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, while mutants that lacked spectrin altogether died very early in development. Meanwhile, Dubreuil ...

AIDS study challenges conventional treatment guidelines for HIV patients

...dict how quickly that person's CD4 cell count will reach the danger level at which treatment for HIV becomes most critical. Current clinical practice, based on previous work from other groups, is to focus on both the current CD4 count and the viral load to estimate how rapidly a person's CD4 cell count wil...

Study of gene transfer for erectile dysfunction shows promise

...enetic code of cells. Instead, small pieces of DNA reach the nuclei of cells and this causes them to increase production of particular proteins. These proteins help relax smooth muscle cells, the type of muscle found in the penis as well as in hollow organs such as the bladder. Relaxing the tissue allows t...

When nerve cells can't make contact

...ll emits neurotransmitters. These signal molecules reach the receiving cell and affect its activity status - provided the receiving cell has "aerials" on its synapses - receptors that bind the chemical signals. The scientists speculated that this process could be disrupted if the nerve cells have no neurol...

Researchers add to understanding of how brain cells communicate

...rom your hand and the visual signal from your eyes reach the brain at about the same time, forging a memory. Specifically, memory requires the coordinated activation of many types of receptors at synapses. The flow of calcium ions through a channel in NMDA receptors plays a central role. Neurons "talk" ...

Steep oxygen decline halted first land colonization by Earth's sea creatures

...he Silurian period about 415 million years ago, to reach a level of about 22 percent of the atmosphere, similar to today's oxygen content. But 55 million years later, atmospheric oxygen levels sank to 10 percent to 13 percent. The level remained low for 30 million years ?during which Romer's Gap occurred ?...

A simple feedback resistor switch keeps latent HIV from awakening

...uirement may avoid making the off state so easy to reach that the virus remains dormant all the time. This model also helps explain why some HIV patients experience short "blips" of viral activity, despite relatively low viral concentration. According to the authors, these pulses of viral activation may be...

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