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Tag: "affect" at biology news

A green way to slag off bunnies

...ns only eat the grain, so the repellent would only affect the vermin. But when the slag-treated plants were compared to normal plants, grazing damage fell by more than half. Slag ?or calcium silicate ?a plentiful byproduct of blast furnaces, is dirt-cheap and environmentally friendly. What’s more, it’s a...

New dwarf buffalo discovered by chance in the Philippines

.... The new discovery also shows that dwarfing can affect different parts of the body differently. For example, B. cebuensis had relatively large teeth, which is typical of island dwarfs, but also relatively large feet, which are usually reduced in dwarfing. Scientists were able to determine the size and...

Bitter taste identifies poisons in foods

...demonstrating that variations in the hTAS2R38 gene affect bitter perception specifically of foods containing...ly-based differences in our bitter taste receptors affect how we each perceive foods containing a particular set of toxins," summarizes Breslin. Breslin note...

Dragonfly's metabolic disease provides clues about human obesity

...n's lab, which studies how insect muscles work and affect the animal's survival and reproductive capabilities, can mechanically isolate single flight muscles and measure their mechanical power output under conditions similar to those in nature. The researchers noted that the muscles of some dragonflies are...

Cigarette smoking impedes tendon-to-bone healing

...is necessary to definitively prove that cigarettes affect humans the same way," she admits. "But I think we have enough evidence to state that nicotine has a negative impact on healing in tendons as well as in bone." As to how nicotine works to interfere with healing, Galatz says it's still too early to ...

Embryonic selection of sex avoids conceiving blind children

...ny cases, leads to blindness. The ailment does not affect males and females equally: in the case of men, there is a 50% probability of suffering the disease. With women, however, they born healthy, bat there is a 50% probability of being carriers. The embryonic selection of sex is the only recourse open i...

More kidney cancer is detected and treated early, yet death rate rises

...is these larger, lethal masses that seem to mainly affect mortality," Hollingsworth says. The researchers say the data also suggest something else: A proportion of these smaller, incidentally found kidney tumors may not merit surgical removal. "We're not saying that surgery for patients with small rena...

Changing length of days reverses how estrogen affects aggressiveness in mice

...has shown how hormones other than testosterone can affect aggression in mammals. "This goes against the c... two types of receptors in parts of the brain that affect aggression ?estrogen receptor alpha and estrogen receptor beta. These receptors are like docking sta...

History-hunting geneticists can still follow familiar trail

...e a bearing on future policy decisions, as well as affect literally hundreds of previous studies on humans and other mammals." UF Genetics Institute scientists analyzed publicly available mtDNA datasets of 47 species of mammals -- a subset of the animals that were in the French study -- as well as associ...

Fruit fly aggression studies have relevance to humans, animals

...s department have identified a suite of genes that affect aggression in the fruit fly Drosophila melanogaste...he researchers wanted to know which specific genes affect a fly's chances of becoming a bully. To find out, they conducted a microarray experiment, a way of c...

Spike in testicular cancer is focus

...cent studies show that environmental exposures may affect development of testicular cancer,?said Zheng. “Determining risk factors that lead to testicular cancer, however is complicated because genetic susceptibility may modify a person’s risk from environmental exposures. We will try to assess the potential...

Zinc plays important role in brain circuitry

...plied that manipulating synaptic zinc levels could affect the neuronal action of zinc, but that such manipulation "highlights the complexity of potential therapeutic interventions," which could cause an imbalance between the excitatory and inhibitory circuitry in the central nervous system. In a preview...

Researchers reveal mystery of bacterial magnetism

...ts do not yet know how the magnetic field has this affect on the bacteria, and are currently conducting addi...cularly interesting to the scientists was that the affect of being magnetic was too small for them to measure in the earth's natural, but weak, magnetic field...

New biochip helps study living cells, may speed drug development

...t 15 percent of the drugs currently in development affect the activities of ion channels, he said, and their development is limited by the slower pace of current technology. The biochip would allow researchers to generate more data in a shorter time, thus speeding up the whole process of evaluating potentia...

Circadian gene helps the brain predict mealtime

... is not crucial for scheduled food availability to affect the physiological coordination of tissues outside the central nervous system. The authors of the study point out that the work they report provides a tool for investigating the brain's cerebral clockwork responsible for predicting mealtime--with ...

Chemotherapy temporarily affects the structures of the human brain

...bilities. Although chemotherapy was thought not to affect brain cells due to the blood-brain barrier, recent clinical studies have confirmed declines in cognitive functions in patients receiving chemotherapy. Animal studies have shown physical changes in the brain and in neurons caused by chemotherapy drugs...

Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million

...2004 population data, how a similar pandemic would affect the world today. These findings, to be published in the December 23, 2006 issue of The Lancet, show that mortality rates for the 1918-1920 pandemic were disproportionately high in communities where per capita income was lowest. If the same pand...

Ecstasy can harm the brains of first-time users

...id not severely damage the serotonergic neurons or affect mood. However, there were indications of subtle changes in cell architecture and decreased blood flow in some brain regions, suggesting prolonged effects from the drug, including some cell damage. In addition, the results showed a decrease in verbal ...

Why Popeye only has eyes for spinach

...MD, a disease that studies in the UK have shown to affect up to 12% of men and 29% of women over the age of 75. "The macula is a small area of the retina responsible for seeing detail and colour in our central field of vision," said Dr Ian Murray, who is leading the research in Manchester's Faculty of Lif...

Signaling for cartilage

...hat direct the expression of other genes) directly affect one another’s function"?he said. After studies in the laboratory, with mice and with humans, the answer was yes. “SOX9 appears to be the dominant player,?said Lee. “When it is present in a progenitor cell, it turns off RUNX2 and allows the cell to...

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