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Tag: "when" at biology news

Love at first smell

...etic perfume had been applied. Smell is important when choosing a partner, not only for humans but also f...pring with the ideal number of MHC types. However, when the perfume was added to males that already had the ideal range of MHC molecules, females could also...

New Treatment Rivals Chemotherapy For Lymphoma, Study Finds

...loodstream and consequently tends to be widespread when it is diagnosed. Traditional treatment often involves intensive chemotherapy, or a combination of chemotherapy and the monoclonal antibody rituximab. These treatments are usually given every three weeks over a span of up to six months and can cause m...

World's largest rainforest drying experiment completes first phase

...r any differences in behavior that already existed when we began the experiment. According to Daniel C. N...deep in the soil. Second, it was anticipated that when the trees ran out of water in the soil, they would shed their leaves. In fact, this study shows that...

Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals

...ses like cancer and arthritis, to detect where and when they are being expressed," Ahrens said. Existing methods used to image gene expression have limitations, according to Ahrens. Some methods cannot be used in living subjects, fail to image cells deep inside the body or don't provide high-resolution i...

Family trees of ancient bacteria reveal evolutionary moves

...versial eras ?approximately 2.1 billion years ago, when cyanobacteria first arose on the Earth. This was a time when the Earth's atmosphere had an incredible, mysterious and inexplicable rise in oxygen, from extremely...

In the migratory marathon, parasitized monarchs drop out early

...tes on their hosts could have a much larger impact when combined with the stresses of long-distance migration. ...

Scientists discover how fish evolved to float at different sea depths

...ladder that is inflated through gas secretion even when they are in high water pressures. My aim was to find out how these systems came into place and how this allowed for the great variety of fishes we have in our oceans today." The study revealed that the special blood proteins, which are essential for...

Gene therapy for Parkinson's disease moves forward in animals

...y to treat the devastating side effects that occur when treating the disease in its later stages. By inse... which carries messages that tell the body how and when to move. In tests with 31 monkeys, including a control group, scientists inserted copies of a gene t...

FDA Approves New Drug to Treat Type I and Type II Diabetes

... Symlin should not be used if patients cannot tell when their blood sugar is low, have gastroparesis (slow stomach emptying), or are allergic to pramlintide acetate, metacresol, D-mannitol, acetic acid, or sodium acetate. Side effects associated with Symlin include but are not limited to nausea, vomiting...

Implanted Devices Detect High-Risk Heart Failure Patients

...t that the cardiologists are "in uncharted waters" when it comes to the new devices, their role in the treatment of heart failure, and how to make best use of the new data which they can provide. Additional trials will be needed to tease out the relationships between different patient characteristics, the...

PCRM develops world's first cruelty-free insulin assay

...iabetes. "We only had two options available to us when we began our diabetes trials," said Dr. Barnard. "One, we could use test kits with insulin antibodies grown in vivo--literally from cells injected into the abdomens of live mice--or we could use kits containing antibodies produced from cells cultured...

Sequencing of marine bacterium will help study of cell communication

...the pathogenic species. I was particularly pleased when my graduate student, Marie Faini, and I were given the opportunity to be members of the team that annotated the sequence." Annotation is a complex process that assigns functions to genes. Having access to the genetic sequence in order to perform thi...

Opposing fat metabolism pathways triggered by a single gene

... factors that turn on or off a set of target genes when bound by specific lipid molecules. In the premier ...s gene expression, the researchers discovered that when nhr-49 was absent, the lifespan of the nematode was reduced by more than 50%, and the animal display...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

...he heart during stress or exercise, which is often when symptoms appear. Many factors may contribute to human heart failure, but a failure in the energy supply would certainly affect the heart’s function if supply can’t be met.?/p>...

Kinovate Life Sciences Launches Nittophase?High Performance Solid Support For Oligonucleatide Synthesis

...o exhibit superior characteristics and performance when compared to other solid supports currently on the market. NittoPhase?has great potential to decrease manufacturing costs due to it’s significantly lower unit cost, as well as potentially higher yield and full length purity, reducing cost-of-goods. Ni...

Bone Density Recovers After Teens Stop Injected Contraceptive

...s measured the participants?bone mineral densities when the study began, and every six months thereafter for the next two to three years. During the course of the study, 61 women stopped using the contraceptive. The researchers found that DMPA users had a greater reduction in bone density findings than d...

Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth

...evidence that there may be times in a woman's life when exposures to potential carcinogens may be critical for breast-cancer initiation and development," said Nie. "Our study findings support the hypothesis that exposures in early life contribute to breast-cancer risk." The study was based on data from t...

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

...oblem in all of HIV vaccine research has been that when you inject the envelope of the HIV virus into peop...s from being made," Haynes said. "A light went on when I saw that the rare human monoclonal antibodies had physical characteristics very similar to autoant...

Antibiotic might fight HIV-induced neurological problems

...in neurodegenerative diseases. The MCP-1 protein, when secreted from brain cells under attack from HIV or...mmune cells that carry "sleeping" HIV and SIV even when antiretroviral treatment is effective. "If this preliminary observation holds up, minocycline could...

Protein offers way to stop microscopic parasites in their tracks

...an become a potentially life-threatening infection when the immune system is weakened by illnesses such as...ime bomb that can go off and cause serious trouble when the immune system wanes or is compromised," explains L. David Sibley, Ph.D., professor of molecular ...

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