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Tag: "along" at biology news

Cellular message movement captured on video

...lin molecules traveling from cells’ outer membrane along green-fluorescence-labeled traces of cytoskeleton.... cells of higher organisms. Paxillin either slides along the actin filaments or is pulled by them. In a surprise, Chien and Hu also showed that paxillin itse...

Threats to wild tigers growing

...k medicines made from tiger parts and tiger skins, along with habitat loss and fragmentation, is believed to be the chief reason for the losses. The assessment, by Eric Dinerstein of the World Wildlife Fund and 15 coauthors, describes the wild tiger's population trajectory as "catastrophic" and urges inter...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

...rom self-renewing spermatogonial stem cells. Yauk, along with colleagues at Health Canada and McMaster University, studied the spermatogonial stem cells of mature mice that had been exposed to cigarette smoke for either six or 12 weeks to look for alterations in a specific stretch of repeated portions of ...

Research team identifies new Alzheimer's gene

...’s therapeutic drugs. “We hope that this study, along with the genome-wide genetics studies to come, will contribute to the clarification of Alzheimer’s risk factors and disease mechanisms, the discovery of promising new disease-slowing and prevention therapies, and the identification of patients and at...

Ancient DNA traces the woolly mammoth's disappearance

..., terminal populations that were left.” Barnes, along with Dr. Adrian Lister of the University College London and the Natural History Museum in London and others, had earlier found evidence that bison, bears, and lions underwent major population shifts twenty-five to fifty thousand years ago. Those resu...

Salty oceans provide early warning for climate change

...think that energy is transferred through the ocean along a deep pressure wave. “The surge of salt generates a pressure gradient in the ocean that sends energy to the north without water actually being transported,” explains Zahn. Regardless of whether ocean circulation speeds up or slows down it causes...

Migration alert -- How tumor cells home in on the lymphatic system

...searcher Jacqueline Shields provide an explanation along with data to support it. Tumors produce excess fluid that continually percolates from the tumor towards nearby lymphatic vessels. The EPFL research shows how tumor cells use a clever chemical strategy to exploit this slow, one-way flow in order to...

Massive herds of animals found to still exist in Southern Sudan

...m used a survey technique of flying systematically along transects making observations of all wildlife, liv...,000 Nile lechwe were estimated in the Sudd swamps along with considerable populations of hippopotamus, buffalo and sitatunga. Southern National Park, loc...

Researchers reveal structure of protein altered in autism

...ology, and co-principal investigator of the study, along with Jill Trewhella, Ph.D., of the University of Sydney, Australia and University of Utah. Incorrect partnering that results when a mutant neuroligin fails to properly align at synapses helps explain why the autism spectrum disorders are manifeste...

Could fungal collection hold the key to new life-saving drugs?

...es.” CABI currently uses its fungal collection, along with the expertise of its scientists to offer a range of services to businesses, including fungal identification, sales, preservations, patenting, training and consultancy. The partnership with SIDR will see CABI’s collection taken one step further,...

New findings challenge established views on human genome

...nting instead to a complex network in which genes, along with regulatory elements and other types of DNA se...sists of a relatively small set of discrete genes, along with a vast amount of so-called junk DNA that is not biologically active. The new data indicate t...

Plants recognize their siblings, biologists discover

...own for a long time that some pairs of species get along better than others, and scientists are starting to catch up with why that happens,” says Dudley. “What I’ve found is that plants from the same mother may be more compatible with each other than with plants of the same species that had different mothe...

Marine phytoplankton changes form to protect itself from different predators

...edators to consume. Lead author Jeremy D. Long, along with collaborators Gabriella W. Smalley, Todd Barsby, Jon T. Anderson and Mark Hay found that’s just what Phaeocystis does. Chemicals that signaled attacks from copepods suppressed the formation of colonies by 60 to 90 percent, while signals from ci...

The kapok connection -- Study explains rainforest similarities

...er seed, are buoyant and able to float down rivers along which the colossal trees grow. Dick and colleagues investigated which of several possible scenarios could be the reason for the current distribution of Ceiba pentandra. Dick concluded that extreme long distance travel by wind or ocean currents ...

New vaccine prevents CMV infection and disease in mice

...ample, or adults who are sexually active, can pass along the virus,” explained Spector. “It becomes a serious problem in developing infants during the pregnancy or in those whose immune system is compromised, such as AIDS or transplant patients.” When a persistent virus such as CMV infects an individu...

How plague-causing bacteria disarm host defense

... is intercepted by YpkA, which sets up a roadblock along several cellular pathways that Gq uses to deliver the alarm," said lead author Lorena Navarro, Ph.D., post-doctoral researcher in the lab of the study's principle investigator, Jack E. Dixon, Ph.D., professor of Pharmacology and Cellular and Molecul...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

...en they dock, prevent the sending of pain messages along nerve pathways. In the current study, researchers used gene therapy to increase by about one thousand times the number of opioid receptors expressed on the surfaces of nerve cells that carry pain messages back and forth between an osteoarthritic ...

Ants show us how to make super-highways

...nnected to the nest by a trail of forager traffic, along which prey-laden foragers run back to run back to the nest. This trail can be extremely uneven and full of ‘pot holes’ as it passes over leaves and branches on the forest floor. The study, by Dr Scott Powell and Professor Nigel Franks at the Unive...

Technique monitors thousands of molecules simultaneously

...rode and used on the chips." Moeller said that , along with emphasizing new reactions, he and his collaborators are working to better identify the molecules they make on the chips, and perfect the signaling techniques used to monitor molecules on the chips. He praised the time-of-flight secondary-ion-mas...

Role of noise in neurons

...f real time in the brain. They show how conduction along such thin axons is affected by the probabilistic nature of voltage-gated ion channels (channel noise). Channel noise destroys information in the AP, and they conclude that these effects are much larger than previously supposed and therefore must be t...

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