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Tag: "responsible" at biology news

Warming oceans threaten Antarctic glaciers

...They found that together these two ice-sheets were responsible for a sea level rise of 0.35 millimetres per year over the past decade ?representing about 12 per cent of the current global trend. However, despite recent attention that has focused on the importance of the Greenland ice sheet, the research shows...

Genes may determine success of hip replacement surgery

...rticipants to test for genetic variations in genes responsible for generating matrix metalloproteinase 1, or MMP1 for short, interleukin 6, and vitamin D synthesis. MMP1 is an enzyme that breaks down collagen, the main protein found in bone and cartilage, while interleukin 6 is a chemical involved in bone met...

Racing neurons control whether we stop or go

...ooking at the target. "We knew that the neurons responsible for the ‘go?and ‘stop?actions were located in the parts of the brain that control movements," Boucher said. "Each trial began with the illumination of a target in the periphery that the subject was supposed to look at. This is when the ‘go?unit was ...

Gallium: A new antibacterial agent?

...biofilms, the multi-cellular bacterial communities responsible for chronic bacterial infections, and killed both free-living bacteria and bacteria in biofilms. Furthermore, inhalation of Ga protected mice from both acute and chronic P. aeruginonsa lung infections. As Ga is already FDA approved for the treatment ...

Xie Lab demonstrates the role of microRNA pathway

...lls," said Dr. Jin. "In the future, the small RNAs responsible for stem cell regulation could potentially be used to control stem cell functions in vivo and stem cell expansion in vitro." "We are in the process of identifying the microRNAs that are important for stem cell self-renewal," said Dr. Xie. "Underst...

Researchers discover new details about HIV-1 entry and infection

...dings suggest that CD4+ T cells may be principally responsible for local shedding of the virus in the vagina of women infected with HIV-1 while LC may harbor viable virus for some time before spreading it to other cells. These results reveal that it is necessary to consider mechanisms of viral entry into both...

Scientists discover a new risk factor for Alzheimer's

... not pinpoint the exact genetic mutations in SORL1 responsible for Alzheimer's. In their studies, the researchers used databases that include genetic information about people with and without Alzheimer's disease. More than 6,800 individuals--45.8 percent of them affected with the disease--were included in the an...

Discovery of an HIV inhibitor in human blood points to new drug class

... effectively blocks HIV-1, the virus predominantly responsible for human AIDS, from infecting immune cells and mu...ecame infected with HIV in 2006, and the virus was responsible for about 3 million deaths last year alone. A variety of molecules in human blood have been impli...

Flavanols in cocoa may offer benefits to the brain

...ng consumption of Mars?special cocoa could also be responsible for the enhanced brain blood flow he and Professor Macdonald have independently reported in previously published research. Specifically, Hollenberg and others have observed that these improvements in blood vessel function following flavanol rich coc...

New bird, bat species revealed by extensive DNA barcode studies

...am of researchers was studying the number of genes responsible for spontaneous mutation rates in yeast, and in our first random sample we discovered that one-third of them control the mutation rate, and we had expected that only about 4 per cent might affect the rate. This shows that no matter how long you carry...

Cancer that colonizes our bodies

...am of researchers was studying the number of genes responsible for spontaneous mutation rates in yeast, and in our first random sample we discovered that one-third of them control the mutation rate, and we had expected that only about 4 per cent might affect the rate. This shows that no matter how long you carry...

Health Canada approves cold and flu medicine

...ts Directorate (NHPD) ?a division of Health Canada responsible for evaluating the safety, efficacy and quality of natural health products (NHPs) ?has issued COLD-fX with a much sought after license to sell to the public with specific science backed claims. The comprehensive treatment claim for COLD-fX® approve...

Brain networks strengthened by closing ion channels

... The brain's prefrontal cortex (PFC) normally is responsible for so-called executive functions. The ability of the PFC to maintain such memory-based functions declines with normal aging, is weakened in people with ADHD, and is severely disrupted in disorders such as schizophrenia and bipolar disorder. The c...

Buckyballs used as 'passkey' into cancer cells

...on extracranial solid tumor in children, and it is responsible for about 15 percent of pediatric cancer deaths," said Jianhua Yang. "Our findings are significant because neuroblastoma cells are well-known for their difficulty in transfection through the cell membrane." Barron is Rice's Charles W. Duncan Jr.-W...

New test for most virulent HPV strains under study

A test for the two strains of human papillomavirus responsible for most cervical cancers is under study. The mo...-based Pap smear, to test for HPV types 16 and 18, responsible for 70 percent of cervical cancers, says Dr. Daron G. Ferris, family medicine physician and director...

Primitive yeast yields secrets of human cholesterol and drug metabolism

...hade. Because Dap1 affects one particular P450 responsible for drug metabolism, Espenshade suspects that genetic variations in the genetic blueprint coding for Dap1 may provide clues to how and why different people react differently to certain drugs. “Understanding the molecular underpinnings of so-calle...

Scientists discover new virus caused deaths of transplant recipients from single donor

...Life Sciences have discovered a new virus that was responsible for the deaths of three transplant recipients who ...Dr. Lipkin. "We succeeded in identifying the virus responsible for the deaths by building on their work and utilizing new tools for pathogen surveillance and disco...

Living with water scarcity -- world must act now

...or to produce one calorie of food. "Each of us is responsible for consuming between 2,000 and 5,000 liters of water every day, depending on our diet and how the food is produced ?far more than the 2 to 5 litres we drink every day" says Molden. A heavy meat diet requires much more than a vegetarian diet. I...

Neural bottleneck found that thwarts multi-tasking

...are the first to identify the regions of the brain responsible for this bottleneck, by examining patterns of neur...t once." Identifying the information bottleneck responsible for this dual-task limitation required the use of functional magnetic resonance imaging, or fMRI, an...

Pregnancy hormone key to repairing nerve cell damage

...who have shown that a pregnancy-related hormone is responsible for rebuilding the protective coating around nerve...ncreases in the body during pregnancy, is directly responsible for the formation of new myelin in the brains and spinal cords of pregnant mice. Further, when non-p...

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