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Tag: "connection" at biology news

Biologists call for better choice of model organisms in 'evo-devo'

...t to represent a particular ancestral organism. In connection to this practice, the researchers point to ‘basal bias?as another way that scientists may get it wrong when choosing new model organisms. This occurs when scientists choose an organism because it was the first to branch off from its ancestor, rat...

How does your brain tell time?

...etwork of interconnected brain cells in which each connection changed over time in response to stimuli, they were able to show that the network could tell time. Their simulations indicated that a specific event is encoded within the context of events that precede it. In other words, if one could measure the...

Gene key to taste bud development identified

...fistula, a condition in which there is an abnormal connection between the windpipe and throat that requires surgery for correction. Cancer patients receiving chemotherapy or radiation therapy often report the loss of taste during treatments. These therapies target cells that are dividing, making them effectiv...

Why don't all moles progress to melanoma?

...edical School. "Until now, no one knew there was a connection between ER stress and the very early stages of tumor initiation." Results of the U-M study ?involving melanocytes from normal human skin and biopsies of non-malignant human moles ?are being published in the October issue of Nature Cell Biology. T...

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

... infections or die. Scientists had recognized a connection between MRSA strains that contain PVL and the increased occurrence and severity of CA-MRSA disease, though no one had directly tested the role of PVL in CA-MRSA virulence. In striving to learn more about CA-MRSA, the RML scientists, with their collea...

Transplanted brain cells hold promise for Parkinson's disease

...d, had differentiated into neurons and showed some connection with the host tissue," says Dr. Borlongan. They did additional studies in test tubes, taking commercially available rat and human dopaminergic cells, exposing them to neurotoxins and then to stem cell factors. Stem cell factor protected cells in ...

Researchers link ocean organisms with increased cloud cover and potential climate change

...of the globe. If confirmed by field studies, this connection between clouds and biological activity could add a... researchers stumbled upon the phytoplankton-cloud connection quite accidentally. "While looking at the satellite pictures, I noticed that cloud properties over ...

Common ancestry of bacterium and plants could be key to an effective new treatment for chlamydia

...ective cure for Chlamydia infections. "The unique connection between the Chlamydia bacterium and plants had been proposed by others," said Thomas Leustek," a professor in the department of plant biology and pathology at Rutgers' School of Environmental and Biological Sciences (formerly Cook College). "But we h...

Eating protein boosts hormone that staves off hunger

..., the researchers reported, demonstrating a direct connection between protein and PYY. When the researchers treated those hormone-deficient mice with PYY, the animals lost weight. "The findings show that PYY deficiency can cause obesity and that PYY appears to mediate the beneficial effects of increased-pro...

Hopkins researchers discover how brain protein might control memory

...ors present, according to Worley, the stronger the connection between the two cells. New receptors constantly replace the swallowed-up ones. The two proteins that came out of the Arc fishing expedition - known as dynamin and endophilin - previously were known to be critical for this swallowing action. And, ...

What does the public really know about HPV?

...mong them, less than half were aware of the virus' connection to cervical cancer; 64 percent knew that HPV could be sexually transmitted, and 79 percent knew it could cause abnormal Pap smears. The public needs education about HPV and cervical cancer in order to make appropriate, evidence-based healt...

Mayo researchers discover HIV dependence on a human protein

... and HIV's integrating protein (integrase). If the connection can be disrupted in the future, it might lead to new therapy for HIV or safer methods of gene therapy. The details appear today in the journal Science. "How an incoming virus co-opts the cell's assistance as it proceeds to establish its permanently ...

Study IDs protein that inhibits HIV from growing in cell cultures

...n and Xiang first began studying the GBV-C and HIV connection because they were skeptical of earlier studies published in the mid-1990s. "It was a strange story," Stapleton said. "Who would have thought a virus floating around in a lot of people does not make them sick but could significantly influence survi...

Finding an answer to Darwin's Dilemma

...hese sediments accumulated in Avalon. The close connection between the first appearance of oxygenated conditions in the world’s oceans and the first appearance of large animal fossils confirms the importance of oxygen as a trigger for the early evolution of animals, the researchers say. They hypothesize that...

From managing sugar to managing healing

...ization of insulin, this work may help explain the connection between diabetes and poor healing. Says Martins-Green, "This work is important because when we know which cells respond to insulin and which molecules are involved, we may be able to develop ways in which we can make insulin work even better or fi...

New system could drastically reduce herbicide use

...uter with an 80-gigabyte hard drive and a wireless connection to the Internet," said Gingrich, "so the amount of information we can collect is virtually unlimited." ...

First biomarker for human sleepiness identified in fruit flies

...iva that break down starch. To verify amylase's connection to sleep loss, Shaw's lab monitored its activity l...eloped to look for other substances that change in connection with the level of sleep debt." Stephen L. Duntley, M.D., associate professor of neurology and dir...

Air travel and flu: Post-9/11 restrictions delayed start of season

...t estimates of passenger air travel to explore any connection with the timing of the annual flu epidemics. They found the usual time taken for a flu epidemic to reach peak levels across the US was about two weeks, and that the national peak date was within two days of the average date ?February 17. Flu spread ...

Most important actors in the growth process of neurons identified

...ex. The axons of the DCN form a very stereotypical connection pattern. This well-ordered pattern gave the researchers the perfect starting point for studying the influence of various genes on the axon growth process. Regulation by several genes From their study of the developing brain of an adult fruit fly, ...

Researchers make nanosheets that mimic protein formation

...iving organisms. "This establishes an important connection between two basic building blocks in biology and n... "The importance of this work is in making a key connection between the world of proteins and the world of nanotechnology" Kotov said. "Once we know how to mani...

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