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Tag: "connection" at biology news

A surprising pair of proteins help make healthy eggs

...es. Freiman said the discovery reveals a potential connection between TAF4b and c-Jun and the formation of a rare kind of ovarian cancer that springs from granulosa cells. The scientists arrived at their findings by creating two matched rat cell lines of ovarian granulosa cell origin. In the experimental line,...

Marine mammals are on the frontline of failing ocean health

...e waters where humans swim and surf, this land-sea connection is front and center. Toxoplasma can also infect humans. It is the third most common cause of death due to food borne disease in the US: estimates indicate that up to 25% of the population may be infected with the parasite, but people rarely show ...

Predicting success

...ons for computers) that allowed them to verify the connection between the amount of material that found its way into the growth and the pressure of the fluids inside the tumor tissue. The Weizmann Institute team's research, as well as that of other research groups, shows that this relationship can differ from o...

Researchers get neurons and silicon talking

...ls and refine the topology of the chip to make the connection with neurons possible. Biologically NACHIP uses special proteins found in the brain to essentially glue the neurons to the chip. These proteins act as more than a simple adhesive, however. "They also provided the link between ionic channels of the n...

Sexual reproduction delays aging in a mammalian species

...and they shed new light on the old question of the connection between sexual activity and aging. Furthermore, as the authors argue, Cryptomys anselli could become a valuable new model organism for the study of the mechanisms that underlie aging, since this species offers the rare opportunity to study differenti...

New discovery: Molecular variation in one gene affects the growth of natural populations

...hat variation in the other genes studied showed no connection to population growth. How strongly the differences in Pgi alleles affect population growth depends on ecological factors. The size of the habitat patch and its connectivity to existing populations affect migration and gene flow between populations...

Texas scientists discover how a hepatitis C protein promotes liver cancer

...Galveston (UTMB) have identified a key biochemical connection between the hepatitis C virus and liver cancer. The molecular mechanism is similar to the one that links the human papilloma virus (HPV), the cause of genital warts, and cervical cancer, according to Dr. Stanley M. Lemon, the senior author of a pape...

Sooner is better with cochlear implants, Stanford scientist shows

... input from their implants they could not make the connection between lip movement and sound. The only kids who fully merged the visual and auditory effects of speech were those who had received implants before they were 30 months old, which indicates that the earlier the implant is done, the better the chance...

RNA splicing occurs in nerve-cell dendrites

...apse is the neuronal structure where this chemical connection is formed, and investigators surmise that the synapse is where learning and memory occur. Researchers have long agreed that mRNA splicing takes place within the cell nucleus. In the nucleus of a mammalian cell, a gene is copied into mRNA, which pos...

Olfactory system detects pheromones that control reproduction

...ing techniques could not specifically identify the connection of neuronal subsets, they ended up tracing the routes of groups of undefined neuronal populations clustered around LHRH producing neurons, Dulac said. In the experiments reported in Cell, Dulac and her colleagues used a genetically altered version o...

Molecular research suggest shift needed in how some drugs are created

...teins cannot line up and connect properly. A tight connection is necessary to trigger an immune response. A mammalian counterpart for Drosophila's Tube molecule has not been found, but Lasker and Nair theorize that adaptors that bind IRAK-4 will either bind at a different site, or the adapter molecule will hav...

How Fruitflies Know It's Time for Lunch

...ecause most subesophageal ganglion neurons have no connection to motor function. All together, these few hug neurons can signal structures controlling growth, feeding, and learning and memory. Besides linking hug neurons to brain centers that regulate taste-related feeding behavior, the study also raises quest...

Researchers show how air pollution can cause heart disease

...at this pathway was more active, strengthening the connection between airborne particles and cardiovascular disease. ...

Grid bridges 4,800 miles for molecular repositories

...ing of a new high-speed, high-capacity fiber optic connection between PNNL's campus in Richland, Wash., and Seattle. This connection made it possible for the laboratory to accept the BioSimGrid Consortium's invitation to deploy the n...

New study examines how sense of smell affects mating and aggression in mice

...d human behavior, but clearly this is an important connection for people, according to Shah. "The booming perfume industry attests to our belief that odors can attract potential suitors, and there are some studies in humans that suggest pheromone-type signals might have subtle effects on the regulation of cert...

Max Planck researchers make a breakthrough in plant stem cell research

...ied four genes, which might serve as a mechanistic connection between plant hormones and the genetic regulatory elements in meristem. The researchers in Tübingen used gene expression analysis to show that the genes ARR5, ARR6, ARR7 and ARR 15, "Arabidopsis Response Regulators", are subject to genetic regulati...

Bacteria which sense the Earth's magnetic field

...newly-discovered filament. It thus enables a close connection between the magnetosome vesicle and structure. This is further evidence of the diverse functions that cytoskeletal structures in bacteria seem to have, and which, for a long time, have only been known in eukaryotes -- i.e., organisms whose cells have...

MicroRNA gene that regulates lifespan found by Yale scientists

...lated through insulin signaling, demonstrating the connection between insulin-driven metabolism and aging. "This microRNA is conserved in humans leading to the enticing idea of being able to beneficially affect the results of aging including diseases of aging," said Slack. Work is under way to identify other ...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

...nected than if there was only a one-way inhibitory connection "This demonstrated that neurons primarily inhibited just the cells that excited it, and that tells us there is specificity in these fine-scale circuits." They then went on two show that these neuron pairs with two-way connections belonged to the same...

Fresh water affected by salt from deicing roads

...ce Appalachian Laboratory said, "There is a direct connection between the rate of construction of new roadways and parking lots and the quality of our fresh water. In particular, we have not paid enough attention to rapid changes in human development and deicer use in watersheds that supply our drinking water ...

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