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Tag: "sometimes" at biology news

Viagra improves high altitude exercise performance up to 45% for some

...duce the constriction of vessels in the lungs that sometimes occurs at altitude. In turn, that would allow greater blood flow through the heart, better transfer of oxygen from the lungs to the blood and improved oxygen delivery to working muscles. The participants, all trained cyclists, performed a total of 1...

How can identical twins be genetically different?

... just about everything, including their genes. But sometimes only one twin will have health problems when genetics predicts both of them should. Scientists at the University of Michigan Medical School are just beginning to understand how two people who are so similar biologically can be so different when it ...

Technique speeds up detecting, treating wound bacteria

...l activity, etc.--can take one to several days and sometimes weeks, depending on the organism," he said. His technique is also useful in detecting flora that can't easily be grown in culture because no one's been able to determine just what the bacteria like in the way of nutrients and environmental conditio...

New device could cut chemotherapy deaths

...fects from chemotherapy can be very unpleasant and sometimes fatal," said Dr Perera. "The new fibres and beads could cut out some side-effects entirely, including nausea and vomiting, and could reduce the number of people who die each year. "Although the first study will be on patients with ovarian cancer, s...

Trial success for diabetic nerve therapy

...ome form of neuropathy that can cause numbness and sometimes pain and weakness in the hands, arms, feet and legs. Progression to amputation is not inevitable, but it is always a threat. Problems may also occur in other organs, including the heart, kidneys, sex organs, eyes and digestive tract. "Diabetic neu...

Discovery may speed forest biotechnology

...fore they begin to produce seed, several years and sometimes decades," he said. "Because of that, a lot of bree...ited interest in the field by private industry and sometimes unwieldy regulations by government agencies. These genes could be used just to speed up conventional...

Mystery solved: Gold's power against autoimmune diseases defined

...se is limited to harmful bacteria and viruses, but sometimes this process goes awry and the immune system turns...upus, but treatment can take months for action and sometimes presents severe side effects which have diminished their use in recent years. With this new underst...

Computer scientist sorts out confusable drug names

... and what I've done." "When you do basic research sometimes you don't know how it might become of use, but if this software helps to reduce even just 10 per cent of prescription errors in the U.S. that translates into helping a lot of people, and it's very satisfying to contribute to that." ...

Study fishes out new role for prostaglandins

...uence (lots of trains)," said Solnica-Krezel, "and sometimes one train wreck can halt the entire process." While 'bad timing' during development can spell the end for an embryo, finding ways to exploit this pathway could have beneficial effects in cancer cells. "The pathways important for regulating develo...

A step forward in the fight against bacterial infections

...cterial infections can strike anyone, and they can sometimes be fatal. Because more and more bacteria are becom...a limited number of bacteria can make us sick, but sometimes they can be fatal. In the US, about 200,000 people die from bacterial infections each year. Normally...

Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure

...nted defibrillators can protect many patients, but sometimes the devices instead accelerate rapid heart beats,"...n these cardiac cell cultures that electric pulses sometimes break rotating waves rather than block them." Engineered cardiac tissues also might prove a useful ...

Study indicates dramatic rise in antibiotic-resistant community-acquired staph infections

...sses to necrotizing skin infections, pneumonia and sometimes blood stream infections. The Centers for Disease Control and Prevention (CDC) reports that staph is one of the leading causes of skin infections in the United States. Previously, scientists have categorized staph into two main types: antibiotic re...

New vaccine for condition that kills 500,000 children a year

... cases of rotavirus, a common childhood virus that sometimes becomes deadly. "This is good news for children everywhere," said principal investigator David O. Matson, M.D., professor of pediatrics at Eastern Virginia Medical School (EVMS) and head of infectious diseases at EVMS' Center for Pediatric Research....

Faults in newly discovered breast stem cells may lead to tumours

...ls have been apparently eliminated by chemotherapy sometimes experience a recurrence of their cancer. A cancerous stem cell could provide one possible explanation for such a recurrence. Chemotherapy works by targeting cells that are dividing rapidly, which is typical behaviour of cancer cells. But an errant ...

Alzheimer's found to be mostly genetic

...mer's risk varied widely, with the highest numbers sometimes greeted with skepticism. "Our finding confirms the higher estimates that have been suggested previously. The important thing is that no one has had this large a sample before," Gatz said, adding the size was 10 times that of any previous study. The...

Gut protein found to protect against infection and intestinal breakdown

...s down and bacteria pass through it into the body, sometimes causing the massive blood infection known as sepsis. Simply giving bile acids orally as a substitute isn't a good solution because they can cause liver damage, Dr. Kliewer said. The researchers focused on a molecule ?FXR ?in the wall of the lining, ...

Leave it to salmon to leave no stone unturned

...ously churn up entire stream beds from end to end, sometimes more than once, using just their tails. For decades ecologists have believed that salmon nest-digging triggered only local effects. But a University of Washington researcher writes in this month's BioScience journal that the silt, minerals and nutri...

New test to detect rare proteins in blood

...adds Greene. "They often have a lumpectomy and are sometimes treated with radiation or chemotherapy, but despite this conventional therapy the cancer still can occasionally reoccur," says Greene. Detection of very early recurrence is important and Greene feels the power of this technology will facilitate recog...

Research details how a virus hijacks cell signals to cause infection

... after causing minor infections. However, CVBs may sometimes cause myocarditis, a potentially severe inflammation of the heart in children and adults, as well as viral meningitis, which inflames the lining of the brain. Rarely, the virus may lead to fatal, overwhelming infection in newborns. CVBs typically re...

When good DNA goes bad

...e scientists next want to understand why cells can sometimes process the structure without creating double-stranded breaks. They also want to know why certain places in the genome become "hot spots" for these breaks, while other seemingly similar areas do not. "If we could understand the players involved in...

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