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Tag: "clues" at biology news

Proteins necessary for brain development found to be critical for long-term memory

...elating to memory loss. "This gives us some strong clues as to what we should be looking into for therapeutic interventions," he said. "If we know that growth factors are important for long-term memory, then we can look at possible remedial roles they might play in diseases such as Alzheimer's and dementia...

Fruit fly study identifies gene mutation that regulates sensitivity to alcohol

...IAAA Director Ting-Kai Li, M.D. "These significant clues about the fruit fly's behavioral response may translate into useful tools to advance the search for human genes involved in sensitivity to alcohol. Insights about sensitivity, or acute tolerance, are especially important because we know that people w...

Fast test for low blood flow in dogs detects early heart trouble

... it difficult for physicians to pick up the subtle clues that signal the presence of arterial disease. He notes that blood vessels begin to narrow long before mild chest pain and other symptoms occur, leading to reduced blood flow that gradually starves the heart of needed oxygen and nutrients. Accord...

Knockout Mouse Project

...use genes, one-by-one, the altered mice will yield clues about the function of human genes and their similar roles in human diseases. "The process is a long one, but the rewards are immeasurable," said Pieter de Jong, Ph.D., Children's Hospital Oakland Research Institute scientist and principle investigat...

Geneticists discover genes that make fruit fly hybrids sterile

... hybrids in general and, in a larger sense, offers clues to how species evolve from common ancestors. The research, published in the Nov. 24 issue of Science, focuses on a rarely occurring mutation in a D. melanogaster gene called "Hmr" (Hybrid male rescue) and a similar mutation in a D. simulans gen...

Few clues about African ancestry to be found in mitochondrial DNA

... one in nine African Americans may be able to find clues about where their ancestors came from, in their mitochondrial DNA. Bert Ely, from the University of North Carolina, and colleagues from other Universities in the USA analysed a database of the human variable region, or HVS-1 region, of mitochondrial...

Biologists probe the machinery of cellular protein factories

...subunits in different positions, Noller is finding clues to the molecular motions with which the ribosome does its work. "Our next goal is to trap the ribosome in other functional states to get more frames of the movie," he said. The authors of the paper, in addition to Noller, are postdoctoral researc...

Does missing gene point to nocturnal existence for early mammals?

...roles in non-visual light detection and so provide clues as to the implications of only having one melanopsin gene. "The two genes and their associated proteins have been maintained in vertebrates for hundreds of millions of years, only for one of them to be lost in mammals. "We are keen to discover ...

Adolescent but not adult hamsters are more aggressive on low dose of fluoxetine

New research offers tantalizing clues as to why some teenagers taking common anti-depressants may become more aggressive or kill themselves. The research is published in the October Behavioral Neuroscience, which is published by the American Psychological Association (APA). Neuroscient...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...f intense stress in their lives. It may also yield clues to why some, but not other chronic pain patients may be prone to developing addictions to certain pain medications. And, it gives further evidence that vulnerability to drug addiction is a very individual phenomenon ?and one that can't be predicted b...

Dragonfly's metabolic disease provides clues about human obesity

...robes disrupting the dragonfly metabolism may hold clues for scientists looking for the root causes of meta...e inflammatory responses." There are some other clues indicating that this may be an important question. "What we're finding in insects is that they beco...

Gene chip technology shows potential for identifying life-threatening blood infection

... biologists, we can also say these genes are major clues to the biology of infection and the host's response to it. If every type of infection activates these genes, then we know they must be important to the disease process, and may also be new treatment targets." Cobb's current studies are focused on ...

Honey bee genome holds clues to social behavior

... led a team that searched the honey bee genome for clues for social cues ?a form of bee pressure that can cause bees to change jobs in response to needs of the hive. "We want to learn how the honey bee society influences behavior in individual honey bees," said Sinha, who is lead author of a paper that w...

A human taste for rarity spells disaster for endangered species

...t trade dealers read the scientific literature for clues to the next hot species: immediately after an article recognized the small Indonesian turtle (Chelodina mccordi) and Chinese gecko (Goniurosaurus luii) as rarities, their prices soared. The turtle is now nearly extinct and the gecko can no longer be ...

UGA scientists unravel 'molecular inch-worm' structure of walking-pneumonia bacterium

...ctivity of this structure in real time--giving new clues about function and demonstrating that, contrary to previous thinking, multiple new terminal organelles often form before cell division is observed. From the standpoint of basic science, this research demonstrates the feasibility of using fluorescen...

Better sludge through metagenomics

...crobes, eludes laboratory culture. We expect that clues hidden in the genome will lead to domestication of this mysterious organism, enabling further studies of its habits and lifestyle. "The genome sequence will also enable biologists and engineers to understand why and how these organisms accumulate p...

Scientists' cell discovery unearths evolutionary clues

... time ?a breakthrough which will provide important clues to the evolution of life on earth. Researchers, headed by evolutionary biologist Professor Sandie Baldauf, of the University of York, and biochemist Professor Pauline Schaap, of the University of Dundee, have produced the first molecular 'dictionary...

Mouse study reveals new clues about virulence of 1918 influenza virus

...ctor Anthony S. Fauci, M.D. "The research provides clues as to why the flu of 1918 was so deadly, and may also help us better understand the disease process that occurs when people are infected by emerging avian influenza viruses, such as the H5N1 strain." Unlike typical seasonal flu, which strikes harde...

Discovery could aid fight against cystic fibrosis infection

...onne National Laboratory (ANL) provided one of the clues that contributed to the HMS discovery. Working through a number of pathogenic proteins, ANL protein crystallographer Marianne Cuff saw a bagel-shaped pore that might be involved in transferring toxins into cells. She deposited the structure of the p...

UCLA study finds same genes act differently in males and females

... tissue from mice with the goal of finding genetic clues related to mental illnesses, diabetes, obesity and atherosclerosis. Humans and mice share 99 percent of their genes. The scientists focused on gene expression -- the process by which a gene's DNA sequence is converted into cellular proteins. With...

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