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Tag: "signs" at biology news

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...ion. In Arabidopsis and other cases, however, the signs of whole-genome duplication are few and far betwee...cation," explains dePamphilis. Even after obvious signs of a whole-genome duplication have been lost, statistical analysis can detect a group of paralogs wi...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...allucinogenic compounds that, in the 1950s, showed signs of therapeutic potential or value in research into the nature of consciousness and sensory perception. "Human consciousness…is a function of the ebb and flow of neural impulses in various regions of the brain-the very substrate that drugs such as ps...

New bird flu drug promises to beat the problem of resistance

...known as Oseltamivir), two patients showed initial signs of recovery before eventually dying. This suggests that the influenza virus was able to rapidly develop resistance to the drug. In another study in Japan, the virus developed resistance in one in six children treated with Tamiflu for ordinary form...

Study shows pine bark naturally decreases severe chronic venous insufficiency

...of treatment. A composite, analogue score based on signs and symptoms (edema, pain, restless limbs, subjective swelling, and skin alterations/redness) was recorded by patients. A second evaluation of edema was made by another physician. After eight weeks of treatment, patients who supplemented with Pycno...

Finding paves way for better treatment of autoimmune disease

... weight loss, went away. Animals showed no classic signs of inflammation, just a significant increase in regulatory cells. MCG researchers have obtained funding from the Arthritis Foundation and the Juvenile Diabetes Research Foundation to see if the cell therapy will work as well in animal models for ar...

Experimental RNA-based drug kills prostate cancer cells effectively and safely

...ipled in size. "The animals themselves showed no signs of side effects," Giangrande said. The scientists caution that much work remains to move the experimental drug into clinical use in humans. Among the next steps, Sullenger said, is to demonstrate conclusively that the drug can be delivered into th...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...ansplants, the investigators examined the rats for signs that the stem cell-derived neurons had survived and integrated with the nervous system. The rats that had received the full cocktail of treatments ?transplanted motor neurons, rolipram, dbcAMP, and GDNF-secreting neural stem cells in the sciatic nerv...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...mination of the samples, we can detect things like signs of disease or environmentally hazardous materials much better," said research associate Lindsay. "We can analyze things using small droplets that normally would require much larger amounts of fluid for testing. This reduces the expense of testing bec...

Seeing the serpent

...rimate groups less threatened by snakes show fewer signs of evolutionary pressure to evolve better vision. For example, the lemurs of Madagascar do not have any venomous snakes in their environment, and in evolutionary terms "have stayed where they are," Isbell said. In South America, monkeys arrived milli...

UF scientists restore sight to chickens with blinding disease

...ch and the UF Genetics Institute. "I thought I saw signs that the chick was responding visually to the envi... eyes, behaviors clinically known as oculo-digital signs that may produce sensations of sight." Work remains to refine the viral delivery system that transf...

Scientists stop autoimmune disease without shutting off immune system

...is, the researchers prevented blistering and other signs of the disease by injecting a drug that inhibits t...nhibitor treatment, almost no mice showed clinical signs of pemphigus vulgaris. For instance, in the group that received the high dose of pemphigus vulgaris...

High estrogen levels associated with dementia in older men

... Honolulu-Asia Aging Study. Participants showed no signs of dementia at baseline in 1991-1993, at which time fasting blood samples were drawn. The researchers measured the levels of testosterone and estradiol, the major estrogen in humans, in the samples and the men were reexamined for evidence of cognitiv...

Insect predation sheds light on food web recovery after the dinosaur extinction

..., and the latest Paleocene and Eocene sites showed signs of recovery. Through most of the intervening Paleocene, most floras have low richness of plants and insect damage. Typical numbers of species of plants in the Paleocene range between 15 and 20 at the sites, with many of the same species found through...

Radioactive scorpion venom for fighting cancer

...human trials of the venom therapy showed promising signs for treating the tumor and prolonging survival rates for patients. At the Health Physics Society meeting this week in Providence, Rhode Island, Alan M. Jackson of the Henry Ford Health System in Detroit will report that he and his colleagues r...

In-home sensors spot dementia signs in elderly

...thought to relate to memory changes that are early signs of dementia. The study results, presented last week at the 10th International Conference on Alzheimer's Disease and Related Disorders in Madrid, show that continuous, unobtrusive monitoring of in-home activity may be a reliable way of assessing cha...

Atmospheric ozone recovering in mid-latitudes, report shows

...rom the sun's ultraviolet radiation -- are showing signs of recovery in the most important regions of the stratosphere above the mid-latitudes in both the Northern and Southern hemispheres, a new study shows. Researchers attribute the improvement to both a reduction in ozone-depleting chemicals phased out...

New MRI technique shows emphysema in asymptomatic smokers

-A new imaging method has revealed early signs of emphysema in smokers with no external symptoms ...more are in the early stages of the disease before signs and symptoms appear. Smoking cigarettes triples the risk of developing the disease. The researchers...

UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery

... discovered that newly infected patients had fewer signs of inflammation at the beginning of the study and experienced greater recovery of the gut mucosal immune system function by the end of it. Dandekar and her colleagues are currently following additional patients being treated with HAART. Unpublishe...

Biomarkers may hone anti-aging therapies

...ping products that will minimize or reduce certain signs of aging," said James Sligh Jr., M.D., Ph.D., assistant professor of Medicine and Cell & Developmental Biology. "The quantifiable biomarkers we've characterized could be useful for monitoring laboratory-simulated aging as well as potential drugs ...

Prenatal nicotine exposure reduces breathing response of newborns...

...eyella, regularly visits the dentist and showed no signs of post-partum periodontal disease--a suspected facilitating condition for bacteria to enter the bloodstream. "If periodontal disease is not present, then this raises more questions about how the bacteria got into the amniotic fluid," said Han. Be...

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