Tag: "loss" at biology news

New gene mutation identified in common type of dementia

...n a gene on chromosome 17. The mutation leads to a loss of progranulin, a protein growth factor that helps...sins over the years, Bruni said. Its possible that loss of both copies of the progranulin gene leads to the death of embryos, and thats why there were no ca...

Loss of hemlocks will affect water dynamics in southern Appalachian forests

...has provided the first estimates on the impact the loss of eastern hemlock will have on the water dynamics...to, NC unit where Vose is project leader. With the loss of this species, we predict changes to streamflow, streamside forest structure, and soil moisture th...

Size and positioning of floral anthers facilitates pollen collection by bees

...nators are threatened by extinction due to habitat loss and pollution from human activities. The recent a...nute differences and interactions, even as habitat loss and climate change threaten the existence of many plants as well as their pollinators. The Floral G...

Size and positioning of floral anthers facilitates

...nators are threatened by extinction due to habitat loss and pollution from human activities. The recent al...nute differences and interactions, even as habitat loss and climate change threaten the existence of many plants as well as their pollinators. The Floral Ge...

Climate change reduces Queensland's bat numbers

... happen in the future and perhaps prevent any more loss of diversity. Bats play an important ecological role as natural insect control agents. They account for almost a quarter of all mammal species and are the only flying mammals. Bats are declining worldwide and any information about their ecology is c...

MU researchers make discovery in molecular mechanics of phototropism

... receptor controlling phototropism, leads to NPH3s loss of a phosphate group, allowing further progression of phototropic signaling. We found that exposure to directional blue light stimulated NPH3s dephosphorylation, Liscum said. NPH3 exists as a phosphorylated protein in darkness and is rapidly depho...

Tracing Parkinson's lethal mechanism

...activating Prx2 in MPTP-treated mice prevented the loss of dopamine-producing neurons. And they experiment...ntly, the researchers discovered evidence that the loss of Prx2 activity also plays a role in human PD. They found reduced Prx2 activity in brain tissue fro...

Study examines cause of hearing loss for patients with certain genetic disease

...pel-Lindau disease may suddenly experience hearing loss because of a tumor-associated hemorrhage in the in...06, to determine the mechanisms underlying hearing loss in patients with ELSTs. Clinical findings and audiologic data were correlated with magnetic resonanc...

Faulty cell membrane repair causes heart disease

...nvestigator Kevin Campbell, Ph.D., also shows that loss of dysferlin causes cardiomyopathy in mice. Furthermore, heart damage in these mice is exaggerated by vigorous exercise or by inherent muscle weakness caused by a muscular dystrophy defect. The results are published in the July 1 issue of the Journal...

New research holds promise for protecting cancer patients against infertility

... levels, such as hot flushes, and can also lead to loss of bone mass. The side effects associated with the cyclical use of GnRH antagonists were minimal, she said. 19% of patients did not experience any at all, and only 6% reported persistent side effects, none of which were dangerous or serious. Dr....

Manganese levels increase in scrapie-infected sheep before clinical symptoms develop

...tted by mis-formed prion proteins which cause tiny loss of brain cell in different regions of the brain, leading to impairment of brain function, including memory changes, personality changes and problems with movement that worsen over time. Definite diagnosis of prion disease is currently only possible...

Chronically sleep deprived? You can't make up for lost sleep

...t the health consequences of chronic partial sleep loss -- losing a little bit of sleep over a period of d...y is the first to show that repeated partial sleep loss negatively affects an animals ability to compensate for lost sleep. The body responds differently to...

Global warming is evaporating Arctic ponds, new study shows

...l ecological threshold for an aquatic ecosystem is loss of water, says Dr. Smol. These sites have now crossed that threshold. Since 1983, Drs. Smol and Douglas have been regularly sampling the water quality and biota of about 40 ponds on Cape Herschel, east-central Ellesmere Island, in the Canadian Hig...

Satellite images reveal link between urban growth and changing rainfall patterns

...'Too often in the past policymakers have been at a loss as to how to evaluate progress,'' he said. ''Remote sensing could be used to evaluate many international environmental agreements, particularly habitat-based conventions, such as Ramsar or those dealing with deforestation, desertification and carbon ...

Military bases can benefit by addressing sprawl issues and biodiversity

...llon (Nevada). The report finds that sprawl and loss of biodiversity are the two fundamental causes of ...ning operations at nearby bases. Additionally, the loss of biodiversity can result in threatened or endangered species, which, if present on a military base...

Desertification: UN experts prescribe global policy overhaul to avoid looming mass migrations

... at UN Headquarters, New York, UNU experts say the loss of soil productivity and the degradation of life-support services provided by nature pose imminent threats to international stability. They outline a multi-point prescription for policy reform at every level of government. It is imperative that ef...

Support for chromosomal theory of cancer found in cancers' development of drug resistance

...rom aneuploidy - that is, duplication or sometimes loss of one or more of our 46 chromosomes, which throws thousands of genes out of whack. This condition, generated by a defect in the mechanism that duplicates chromosomes during cell growth, leads to more and more chromosomal disorder as the cells divide...

News tips from the Journal of Neuroscience

...ippocampal CA1 neurons in control rats, but neuron loss was much less in CORT-nursed rats. 3. A BOLD Look at Columnar Resolution Chan-Hong Moon, Mitsuhiro Fukuda, Sung-Hong Park, and Seong-Gi Kim A lot of action in brain circuits happens below the millimeter level, the rough limit of conventional fun...

OHSU scientists find antidepressant, bone loss link

...s or TCAs, were not associated with increased bone loss in men and women. TCAs include such drugs as amitr...women's study, a longitudinal study measuring bone loss rate, researchers first examined 2,722 women ages 65 and older from four regions between 1986 and 19...

Can you hear me now? Stem cells enhance hearing recovery

...ue of The American Journal of Pathology. Hearing loss has many causes, including genetics, aging, and infection, and may be complete or partial. Such loss may involve damage to inner ear cells called cochlear fibrocytes, which are fundamental to inner ear...

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(Date:4/15/2014)... CLEVELAND, Ohio (April 16, 2014)A new study from the ... vitamin D levels and menopause symptoms. The study was ... of The North American Menopause Society., The authors analyzed ... and a number of menopause symptoms, including hot flashes, ... women who participated in the calcium and vitamin D ...
(Date:4/15/2014)... in Greenbelt, Md., is home to hundreds of ... Goddard, some of the most cutting-edge Earth science ... that cutting-edge innovation has earned a Goddard scientist ... for Anthropology and Geography awards the Vega Medal ... shown excellence in the fields of physical geography, ...
(Date:4/15/2014)... Missouri researchers have previously shown that a genetic pre-disposition ... In a new study, Frank Booth, a professor in ... potential link between the genetic pre-disposition for high levels ... maturation occurs. , For his study, Booth selectively bred ... extreme laziness. Booth then put the rats in cages ...
Breaking Biology News(10 mins):Low Vitamin D may not be a culprit in menopause symptoms 2Goddard scientist receives Vega Medal from King of Sweden 2Genetic pre-disposition toward exercise and mental development may be linked 2
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