change 2 3

Tag: "change" at biology news

Scientists find fossil proof of Egypt's ancient climate

... we're interested in building a history of climate change through time to understand how people would have responded to dramatic shifts in climate," said Smith. "This is a major theme of our work, and we hope that some of our findings can give us perspective on what we're facing in the coming centuries." ...

Vascular structure and function improve with diet and exercise

...weight reduction program." Blood pressure did not change significantly. Ultrasound measurements of the heart and blood vessels at rest were performed as well. Left ventricular diastolic filling (LVDF) measurements indicate the efficiency of the heart to relax. Left ventricular mass is a measure of end or...

Children's taste sensitivity and food choices influenced by taste gene

...s well as why taste and food preferences appear to change with age. "The sense of taste is an important determinant of what children eat. We know that young children eat what they like. We also know that many children do not like bitter taste, thereby interfering with vegetable consumption and potentially ...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...n a one-time infection can potentially permanently change physiological systems, a phenomenon called "perinatal programming." Understanding how infection in newborns can disrupt memory in immune-challenged adults may help scientists to understand how exposure to germs or environmental stressors before or ...

Genetically modified rice in China benefits farmers' health, study finds

...ege who specializes in the economics of technology change in the agriculture of developing countries. "Farm surveys of randomly selected farm households that are cultivating the insect-resistant GM rice varieties demonstrate that when compared with households cultivating non-GM rice, small and poor farm hou...

A new study examines how shared pathogens affect host populations

...in the community, without any numerical or genetic change in the host or pathogen. Studying only the target species or the abiotic environment would not reveal the cause of the epidemic. Their results have not only important consequences for understanding the role of pathogens in species interactions but al...

How the environment could be damaging men's reproductive health

... exposure to environmentally derived chemicals can change the sex chromosome ratio in sperm is worrying in itself and requires more attention from scientists and the public," said Prof Giwercman. The second study by researchers from Denmark, Lithuania and Finland[2] suggests that a higher than expected pre...

Wisconsin researchers identify sleep gene

...on the final common pathway and has the ability to change the excitability of neurons." ...

Liposome finding implies electrical effect on cell development

...trical fields that may provide a paradigm-shifting change in science's understanding of biomembrane function in operating living systems. Arizona State University chemists Mark Hayes and Michele Pysher have found that liposomes have a tendency to form tube-like extensions in their membranes through the inf...

Controlling protein diversity

...s that hormones like estrogen and progesterone can change the amounts of proteins made by their target genes...e expression of that gene as well as qualitatively change what comes off the gene in terms of what protein is made," said O'Malley. These coactivators are unu...

Reducing malarial transmission in Africa

...easing. These trends have forced many countries to change their treatment policies and use more expensive drugs, including drug combinations that will hopefully slow the development of resistance and minimize transmission of resistant parasites. In this month's premier open-access journal PLoS Medicine Col...

Discovery Promises Simpler Therapy for Sickle Cell Disease

...his finding, if verified in clinical trials, could change physicians' approach to sickle cell disease," Stamler said. "Current efforts for managing the disease completely miss the role that red blood cell-derived nitric oxide plays. The disease might therefore be treated by more simple and effective methods...

Nanoscale Diagnostic Sets Sights on Alzheimer's

... sensitivity of the bar code assay has a chance to change the way the medical community thinks about molecular diagnostics and the markers they consider for many types of diseases." ?Chad Mirkin, Northwestern University Department of Chemistry and Institute for Nanotechnology "It's a good bet that the very...

Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection

... acid sequence. In some cases, a single amino acid change in one species could completely change its ability to infect a previously "off-limits" species, Surewicz and colleagues found. In a study ...

McGill researchers shed light on formation of carcinogen in food

... bottled foods, there's no reason for consumers to change their shopping habits according to government health agencies. The quantities of furan in foods are well below what is considered dangerous. Although furans have been linked to cancer in experimental animals, there is no direct evidence that furans ...

Gray wolves maintain the food chain in winter

Climate change has already had dramatic effects on individual spe...ers and Wayne Getz show that the impact of climate change on many different species in Yellowstone Park can be buffered by a top predator - the reintroduced g...

Buying Time Through Hibernation on Demand

...uspect there will be clinical benefits and it will change the way medicine is practiced, because we will, in short, be able to buy patients time." In the Science paper, Roth and colleagues report inducing a state of clinical torpor in mice for up to six hours before restoring their normal metabolic functio...

U-M team recovers ancient whale in Egyptian desert

...uspect there will be clinical benefits and it will change the way medicine is practiced, because we will, in short, be able to buy patients time." In the Science paper, Roth and colleagues report inducing a state of clinical torpor in mice for up to six hours before restoring their normal metabolic functio...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...ity, New Jersey, noted that not only did the brain change as romantic love endured, but that some of these c...esults suggest how feelings of romantic love might change into feelings of attachment. Our results support what people have always assumed ?that romantic love...

Harmful chemicals may reprogram gene response to estrogen

...indicates that an environmental agent can actually change or reprogram the gene so that it functions differently. "This study is telling us that an environmental reprogramming of a normal response, combined with an inherited gene defect, work together to promote cancer," said NIEHS Director David Schwartz,...

1 2 3 4 5 6 7 8 9 10