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Tag: "living" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...nts and Children (ALSPAC), assessed pregnant women living in Avon, England, who were due to give birth in a 21-month window. More than 14,000 women an estimated 85 to 90 percent of those eligible responded to questionnaires that gauged how depressed or anxious they were at multiple points early on in, lat...

Cellular message movement captured on video

...les that bring the cell into action.” Examining living cells through a microscope, Chien and the paper’s co-author, associate project scientist Ying-Li Hu, filmed red-fluorescence-tagged paxillin molecules traveling from cells’ outer membrane along green-fluorescence-labeled traces of cytoskeleton. Even ...

Agent slows aging in mice

...other destructive processes, can boost the odds of living longer. Today at the annual meeting of the American Aging Association, University of Michigan scientist Richard A. Miller reports early results from a mouse study his lab and two others are conducting for the National Institute on Aging. The study, ...

Brain inflammation may be friend, not foe, for Alzheimer's patients

...lls in a dish or postmortem human tissue, not from living organisms in which disease progression is closely monitored. “People have talked for a long time about a balance of ‘good guys’ and ‘bad guys’ within the inflammatory process, either causing harm or alleviating the disease. The current work reinfo...

Old memory traces in brain may trigger chronic pain

... 90 percent accuracy how many years they have been living in that pain without even asking them the question.”...

The insect vector always bites twice

...ively, in the serum sampled from human populations living in transmission areas, the presence of antibodies targeting specifically these proteins contained in an extract of total saliva of the culprit vector. This approach, based on the studies of malaria transmission by mosquitoes of the genus Anophele...

A new plant-bacterial symbiotic mechanism promising for crop applications

...er, sainfoin). In addition, cultivation of legumes living in symbiotic association with bacteria can contribute to vegetation regeneration schemes on soils depleted in nitrogen owing to overexploitation, erosion or desertification. The plant cover thus formed can help achieve ecological restoration, by enri...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...year. Most of these deaths occur in young children living in sub-Saharan Africa. Roepe and his collaborators at Georgetown University, in collaboration with investigators at the National Institutes of Health, described in 2000 that the PfCRT gene is primarily responsible for the vast majority of drug re...

Pesticides choke pathway for nature to produce nitrogen for crops

...specific receptors (NodD) inside rhizobia bacteria living in root nodules in the soil. Rotation legume crops such as alfalfa and soybeans require such interaction to naturally replace nitrogen levels that, in turn, benefit primary market crops like corn grown after legume rotations. __IMAGE_2 Legume p...

Brightening prospects of using fluorescent nanotubes in medical applications

...make nanotubes particularly well suited for use in living systems,” says Hertel. These factors include: ...at have been done indicate that they do not damage living cells. By comparison, quantum dots, which are a popular alternative fluorescent tagging technology, ...

Alzheimer's disease to quadruple worldwide by 2050

...n 26 million people worldwide were estimated to be living with Alzheimer’s disease in 2006, according to a study led by researchers at the Johns Hopkins Bloomberg School of Public Health. The researchers also concluded the global prevalence of Alzheimer’s disease will grow to more than 106 million by 2050. ...

Rising skin cancer rates are more likely to affect wealthy people, says 12-year review

... more likely to affect men, older people and those living in more affluent areas, according to a study just ...er. “And there was a link between more patients living in wealthier areas and increased levels of malignant melanomas and basal cell carcinomas.” The te...

Researchers shed light on shrinking of chromosomes

...researchers led by Jan Ellenberg at EMBL looked at living mammalian cells to find out how and when chromosomes shorten during cell division. Condensation begins early, when the cell starts preparing for division, and the chromosomes become shorter and shorter until they are about to separate and migrate t...

Undergraduate research shows leaderless honeybee organizing

...cology. Like humans, honeybees are remarkable for living in large organized groups where highly developed s...utionarily, they got to the same point as humans – living in these highly organized societies that function with remarkable efficiency -- but they are organ...

454 sequencing identifies HIV drug resistance at early stage

...have died from AIDS and over 42 million people are living with HIV/AIDS worldwide. In the U.S. alone, 40,000 new infections occur each year. ...

Marine phytoplankton changes form to protect itself from different predators

...cal signals affected the percentage of Phaeocystis living in colonies or as solitary cells. Finally, they examined whether this response affected how much the predators ate to determine if the change conferred a survival advantage. “We found that these organisms were making the right choice,” Hay said. ...

Mutating the entire genome

...rint The genome is the genetic blueprint of a living organism. It is made of deoxyribonucleic acid, or ...to make body parts and carry out most functions in living organisms. Genes typically have 50,000 base pairs but can range in size from a few thousand to 300,0...

Prey not hard-wired to fear predators

...onal Parks ) To test reactions of animals living without their traditional predators, Berger played...g behavior and flight observed in the same species living with wolves, bears or tigers. For example, elk in the mountains of Siberia—who subsist alongside t...

The mouflons of the Kerguelen archipelago

...Denis Réale had access to samples from populations living on the Islands between 1988 and 1996. For the missing years, the researchers appealed to the hunters who wintered there. “We got the missing DNA samples from hunting trophies and managed to go all the way back to the son of the founders,” said Denis ...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...offer an important window into the function of the living brain in these patients, which supports a normalization of brain activity specific to the treated hemisphere.” The study used an adeno-associated virus (AAV) vector to deliver an inhibitory gene (glutamic acid decarboxylase or “GAD”) to the subtha...

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