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Tag: "always" at biology news

Sex: It's costly but worth it. Just ask a microbe

... by the Genetics Society of America. "There was always an assumption that microbes reproduce asexually, but they are actually asexual and sexual," says Xu. Using a fungus that has two sexes, A and Alpha, he established three populations: A microbes (females), Alpha microbes (males), and a combination of ...

Molecular mechanism may explain how fevers spark seizures

... epilepsy specialist in her native China. "I was always impressed by how quickly fevers can trigger convulsions in children," she said. "I have been curious about this mystery for years." Kang came to Vanderbilt to work with Macdonald, internationally renowned for his research on epilepsy and GABA-A rec...

Outsmarting the smartie bug

...serotypes not included in the vaccine. "We must always be vigilant to changes in the properties of microorganisms when we introduce new vaccines or antibiotics. This catalogue will help us to develop new tools to keep a check on the march of the pneumococcus and is also going to give us fascinating insig...

U-M researchers take new approach to defeating Gram-negative bugs

... "We, as well as the entire scientific community, always thought Gram-positive cells could not survive without this external structure. This shows that is not true," Woodard said. Though they didn't die, they were weakened, and that made the cells an easy target for antibiotics. Because Woodard suspected ...

Study: Paramedics save more lives when they don't follow the rules

... Sudden unexpected collapse in an adult is almost always due to cardiac arrest. The new approach is not recommended for respiratory arrest, a much less common situation following, for example, drowning or drug overdose." As a cause of death, out-of-hospital cardiac arrest is second only to all cancer dea...

Bone and cartilage growth to blame for heart valve disease

...tudy. "Common wisdom in the medical community has always been that thickening of the mitral valves was part of the aging process as deposits of calcium, a mineral found in the blood, built up on the valves. Therefore, research has never focused on preventing the problem," says Dr. Rajamannan. "Currently ...

Cyclosporine inhibits hepatitis C virus in vitro

....com/journal/livertransplantation ). Hepatitis C always recurs after liver transplantation, often damaging the new organ and rendering patients ineligible for retransplantation. To address this problem, patients with hepatitis C often undergo interferon-ribavirin combination therapy after receiving a live...

Uncovering sex-change secrets of black sea bass

...lions," he says. "It doesn't do us much good if we always have to go out and get new females." With funding from NH Sea Grant, Berlinsky has teamed with Nardi and GreatBay Aquaculture to study what triggers sex reversal in black sea bass ?and how to prevent it. Berlinsky and his colleagues have discovered ...

Pennsylvania researchers find liver transplants provide metabolic cure for rare genetic disease

... metabolic crisis and acute neurological injury is always present, and many older individuals with MSUD suffer from depression, anxiety, and impaired concentration and learning," Dr. Strauss said. "Liver transplantation protects patients from these acute and chronic neurological complications. It is a reaso...

Contaminants linked to sturgeon decline in Columbia river

...ds and live for more than a century. The fish have always been an important food source for Oregon's Native Americans, and now as salmon runs diminish, white sturgeon fillets and steaks are increasingly sold in fish markets. But because of their potentially high contaminant levels, Schreck cautions consume...

Pesticides in the nation's streams and ground water

...oncentrations of individual pesticides were almost always lower than the standards and guidelines, represent... that pesticides seldom occurred alone--but almost always as complex mixtures. Most stream samples and about half of the well samples contained two or more p...

Nanopore method could revolutionize genome sequencing

...e. "If nature was very unkind, then the DNA would always fluctuate so much as it passes through the nanopore that measuring the current would not give us any information about what base is present at a particular location," explained Michael Zwolak, a graduate student in physics at the California Institute...

Computer scientist sorts out confusable drug names

...this wasn't a good use of resources, and it wasn't always effective--people make mistakes," Kondrak said. "But now one person using PPC's system can identify sound-alike and look-alike drug names with great accuracy in a matter of seconds," he added. Drug companies covet finding good, short drug names that ...

'Scent of a woman' tells male redback spiders to find a mate

...ng males] in the wild," says Kasumovic. "Everybody always states that the small males are a by-product of them not being able to get enough resources, but we're showing that they're intentionally developing that way." ...

Predicting successful outcomes in living-donor liver transplants

...aditionally used to measure liver function are not always conclusive, researchers led by Tomohide Hori of Mie University in Tsu City, Japan analyzed how indocyanine green (ICG), a non-toxic dye, was processed by the liver, assessed a non-invasive method of measuring its levels, and determined whether such a...

Record bonefish

While a bonefish catch is always gratifying for the avid angler, one caught in the Bahamian flats off southwestern Andros Island in December proved even more satisfying for the researchers who study bonefish migration at Bonefish and Tarpon Unlimited (BTU) and the University of Miam...

Trial success for diabetic nerve therapy

...ression 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 neuropathy is a major problem in insulin-dependent diabetes, particularly in patients who have had the disease for a pe...

New fruit fly protein illuminates circadian response to light

...box protein family. "Since the degradation of TIM always happens in the presence of light, the animal associates the absence of TIM with daytime hours," explains Sehgal. The mutated JET protein reduces the light-dependent degradation of TIM and the circadian response to light. Sehgal and others were able ...

NASA study solves ocean plant mystery

...reenness of algae or phytoplankton before, we have always assumed that equally green waters were equally productive," Behrenfeld said. "We now know this is not the case, and that we have to treat areas lacking iron differently." For the tropical Pacific, correction for this "iron-effect" decreases scienti...

Speeding discovery of the 'human cancer genome'

...cancer, Chin added, as the primary tumor is almost always curable. Once the cancer spreads from the skin to other parts of the body, however, it can be difficult to treat and deadly. The metastatic cancers of mice developed a chromosomal amplification--a region of the genome expressed in an unusually lar...

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