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Tag: "function" at biology news

OHSU surgeon implants donated tissue allografts

...pportunity to correct disability and restore joint function offers the patients the chance to return to a healthy, pain-free and productive life. Crawford said the collaboration between CTS, JRF and OHSU "has been exciting and I am delighted I could be an integral part of bringing this partnership to frui...

Discovery could lead to better control of hemorrhagic fever viruses

...uth, eyes or ears. Because of TfR1's essential function in transporting iron into cells, it is found on th... virus entry without compromising TfR1's essential function in cellular iron uptake. "If some of these antibodies work, they could be used clinically fairl...

Imaging techniques permit scientists to follow a day -- or four -- in the life of a cell

...h as tumor formation. Understanding how live cells function is therefore invaluable for molecular and cellular biologists, and advanced techniques to visualize cells in action are of great importance. The current issue of Cold Spring Harbor Protocols ( www.cshprotocols.org ) addresses these concerns with tw...

Bacterial walls come tumbling down

...of exactly how it interferes with bacterial enzyme function should help scientists design modified versions that are more suitable for use in people. Understanding the structure of this enzyme should also speed up screening and design of new antibiotics, which are in constant demand as microbes continually...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...g a degenerative disease, significantly preserving function and extending life. The mouse mo...nset of symptoms was delayed, well-being and motor function was preserved, and lifespan was extended by >70%. The researchers discovered that their i...

A genetic 'gang of 4' drives spread of breast cancer

...and his colleagues will explore in more detail the function of other LMS genes, in addition to the four reported in the Nature paper. They plan to investigate whether shutting down other LMS genes will affect metastasis of breast cancer to the lung, and whether the LMS genes influence breast cancer metastasis...

New study challenges 'critical period' in childhood vision development

...case demonstrated that a person can acquire visual function even after being deprived of sight for an extended period during childhood. The evidence gathered from this case study presents a scientific alternative to the widely noted "critical period" that the brain undergoes during childhood. The critical ...

Research finds music training 'tunes' human auditory system

...that by playing music -- an action thought of as a function of the neocortex -- a person may actually be tuning the brainstem," says Kraus. "This suggests that the relationship between the brainstem and neocortex is a dynamic and reciprocal one and tells us that our basic sensory circuitry is more malleable t...

Cold sore virus might play role in Alzheimer's disease

... the receptor, possibly altering the structure and function of the synapse. Damage to synapses is one of the earliest signs of Alzheimer's disease. Another possibility is that the body's immune response against herpes somehow damages the brain, and that such damage is worse in people with the ApoE-4 copy o...

Smell may outlast other senses

...ory function. The results showed that olfactory function deteriorates relatively slowly with age in those who do not smoke, take medications or have a history of nasal problems such as sinusitis. However the ability to smell drops off much quicker in older people who were taking medications ?also an in...

Robotic therapy helps restore hand use after stroke

...ad at least moderate residual weakness and reduced function of the right hand, although the affected hands wer...botic device. "Most spontaneous improvement in function occurs in the first three months after a stroke, and after that things tend to plateau," said Dr. St...

New protein inhibitor impedes growth of cancerous cells

...d a chemical inhibitor such as BI 2536 allows Plk1 function to be experimentally disrupted at specific points during the cell-division cycle, thereby revealing the normal roles of Plk1 in new detail, and potentially identifying specific cellular processes that might be targeted by future anti-cancer therapeut...

Technology reveals 'lock and key' proteins behind diseases

...of Toronto and lead author of the study. "When the function of these transporters is impaired, disease can res...al unanticipated aspects of how these transporters function and help researchers gain clues for fighting disease and drug resistance." Using iMYTH, the Sta...

New mechanism for nutrient uptake discovered

...in the complex," continued Loqué. "The pores can't function without this physical stimulation." "The rapid chain-reaction among the different pores allows the system to shut down extremely fast and can even memorize previous exposures," noted co-author Wolf Frommer. "Imagine a large animal marking its terr...

Trusting your instincts leads you to the right answer

...lmost no time to think. The conscious or top-level function of the brain, when active, vetoes our initial subc...rotated image as the odd one out, the higher-level function overrides that decision and dismisses the rotated object because it is the same as all the other sym...

Insomnia drug can improve brain function

...used to treat insomnia, temporarily improved brain function in a patient suffering from akinetic mutism, a con...ssed the effect of zolpidem on motor and cognitive function and explored its effect on brain activity using positron emission tomography (PET) scans. They admin...

Vasectomy may put men at risk for type of dementia

...however, patients eventually lose their ability to function independently. Preliminary evidence from the study also seemed to connect another form of dementia to a vasectomy. In a smaller group of 30 men with a dementia called frontotemporal dementia (FTD,) 37 percent had undergone a vasectomy. The earlies...

Tumor-suppressor gene is critical for placenta development

...days after fertilization, a time at which placenta function becomes critical for survival (the gestation perio...suggests that E2f3 is a key player in mediating Rb function in stem cells and possibly in its role as a tumor suppressor." Next, Leone and his colleagues wan...

Scientists use nanoparticle to discover disease-causing proteins

...r way to ascertain the presence, concentration and function of proteins involved in disease processes. They also hope the new method will facilitate better, more efficient diagnosis in living cells and patients. Most diagnostic methods must be done on minute dead blood or tissue cell samples in a laborator...

MicroRNAs as tumor suppressors

... and Anindya Dutta (UVA) reveal that microRNAs can function as tumor suppressors in vitro. "Overexpression of HMGA2 is an important feature of many medically important tumors like uterine fibroids,?explains Dr. Dutta. “It is very exciting to realize that microRNAs have an important role in suppressing the o...

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