Tag: "again" at biology news

Bursts of waves drive immune system 'soldiers' toward invaders

...on has found the same solution to generating waves again and again even with completely different molecules, and at different scales of space and time -- encouraging f...

Abnormal fat metabolism underlies heart problems in diabetic patients

...lems with the mouse hearts' ability to pump blood, again implicating altered lipid metabolism, cardiolipin scarcity and mitochondrial impairment in heart disease using lipid as predominant fuel. Gross adds that in addition to the effects on mitochondria, many of the membranes in heart cells, which are buil...

Edible fish feasts beats malaria

...s that biological malaria control methods are once again in vogue. New research published in the online open access journal BMC Public Health shows how Nile tilapia, a fish more commonly served up to Kenyan diners, is a valuable weapon against malaria mosquitoes. Annabel Howard and Francois Omlin from th...

New survey documents the headaches of computerized medicine

...of errors crop up. The one weve seen over and over again is physicians trying to enter orders for the wrong patient. Usually theyre caught, most often by the pharmacist or the nurse, but sometimes theyre not. Ash, in a separate article published in the News and Views section of the June 30, 2007 issue of ...

Identified mechanism in the malaria parasite to help it adapt to infected individuals

... when infecting another individual or silence them again in a different host, explains Corts. We are talking about a very sophisticated adaptation system to the host and our challenge is to find out how this mechanism works at molecular level; that is, we need to figure out which specific epigenetic modifi...

Success or failure of antidepressant citalopram predicted by gene variation

...RIK4 gene had a higher likelihood of response, and again found that the variation in the HTR2A gene also made people more likely to respond. The results were reproduced, strengthening their validity. The protein produced by HTR2A acts as a receptor on brain cells for the chemical messenger serotonin, one ...

Presence of wolves allows aspen recovery in Yellowstone

... more than 50 years, young aspen trees are growing again in the northern range of Yellowstone National Park. The findings of a new study, just published in Biological Conservation, show that a process called the ecology of fear is at work, a balance has been restored to an important natural ecosystem, an...

Learning a second language -- Is it all in your head?

...ns before training. In a neurophysiologic study -- again with the same participants -- Wongs team used functional magnetic resonance imaging to observe brain areas that were activated when participants listened to different pitch tones. They found that the more successful second-language learners were thos...

Researchers watch antibiotics, bacteria meet at atomic level

...RNA) to the growing RNA chain. This loop must open again to allow the next cycle to happen. If something such as an antibiotic keeps the loop from closing, RNA polymerase can't properly function and stalls. This loop is a target for antibiotics, including streptolydigin, Artsimovitch said. If we can desi...

Rise of dinosaurs in Late Triassic more gradual than once thought

... to excavate at the site in the summer of 2006 and again earlier this summer, with assistance from members of the public enrolled in a week-long summer paleontology seminar. "In the summer of 2005, we spent a day at the quarry and found half a dozen dinosaur bones, which is unheard of for Triassic deposi...

Synthetic adhesive mimics sticking powers of gecko and mussel

...stick but only temporarily, coming off of surfaces again and again like a sticky note. But put those feet underwater, and their ability to stick is dramatically reduce...

Universal flu vaccine being tested on humans

... and, consequently, they must also be administered again every year. The external structure of the flu virus mutates regularly, giving rise to new strains of flu. Due to these frequent mutations, the virus is able to elude the antibodies that have been built up during a previous infection or vaccination. T...

Researchers witness natural selection at work in dramatic comeback of male butterflies

.... The male-killing ability of the bacteria emerged again after three generations. Thus, they could rule out a change in the bacteria as an explanation for the resurgence of the males in the butterfly populations studied. ...

Antibody retards growth and induces death in liver cancer cells

... kinase (RTK) family pathway, became highly active again in the liver of HCC patients, Satdarshan P. Singh Monga, M.D., associate professor, division of cellular and molecular pathology and colleagues at the University of Pittsburgh School of Medicine, obtained rat and human liver cancer cell lines and ana...

Internal clock, external light regulate plant growth

...ng the day, switch off after dark but then turn on again late in the night. But the proteins made by PIF 4 and PIF 5 break down when exposed to light. So while the internal clock drives transcription of the genes to produce proteins, external light removes the protein. The PIF 4 and 5 proteins are though...

UF scientists work to develop simple bladder cancer test

... once its happened its very likely going to happen again -- once you have bladder cancer you are at a high risk of recurrence for the rest of your life, which makes monitoring it a real problem. As a result patients need to be closely monitored, with most undergoing cystoscopy every few months in the fir...

Male or female factor infertility -- men suffer just the same

...e questionnaire before the start of treatment, and again after 12 months of treatment, only if their partners had not become pregnant during this time. The men were divided into four categories; unexplained infertility; female infertility; male infertility; or mixed. We found that social stress, ...

Cloned pigs help scientists towards a breakthrough in Alzheimer's

...versities of Copenhagen and rhus, Denmark are once again at the cutting edge of biotechnology. This time with cloned pigs that have been genetically modified so that they may function as animal models for the notorious Alzheimers disease. In the US alone, 5 million people suffer from this human brain di...

Getting to the root of plant growth

...generic computer model of a whole plant which will again be used to advance crop and plant science. Representatives from UK research councils, industry, publishers, and external academics will gather at the opening event on July 2 with University of Nottingham staff from the four academic schools involve...

Gene variant increases risk for alcoholism following childhood abuse

...d trauma than others. With this study we see yet again that nature and nurture often work together, not independently, to influence our overall health and well-being, says NIH Director Elias A. Zerhouni, M.D. This finding underscores the central role that gene-environment interactions play in the patho...

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(Date:5/22/2013)... must join together in a major new effort to ... in providing Earth,s people with clean water that looms ... a comment article in the current edition of ... the American Chemical Society (ACS), the world,s largest scientific ... Ph.D., and Jerald L. Schnoor, Ph.D., explain that shortages ...
(Date:5/22/2013)... of potential environmental and human health effects from ... year has led scientists to recommend stronger government ... lithium-ion (Li-ion) battery materials. That,s the conclusion of ... Environmental Science & Technology . , Oladele A. ... have become mainstays for powering everything from smart ...
(Date:5/22/2013)... scientists provide important new details on how climate change ... May 21 in the Journal of Animal Ecology ... accurate predictions and informing policymakers of how species are ... , "There is a growing recognition among biologists that ... another, and that this is going to have very ...
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