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63,002 articles from ScienceDaily

• FRIDAY 17. APRIL, 2009
• 18:05 New Neurons Update Remote Memories

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  It is not easy to find your student bedroom when you left university 10, 20 or 30 years ago. But once you have found it, you can easily return the next day. Indeed, by reactivating this memory, it has been strengthened and updated to provide spatial references.  

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• 18:05 Baby Canine Teeth: No Evidence To Support Extraction

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  The practice of extracting baby canine teeth to make way for adult canines that are erupting in the wrong place has no evidential basis, according to a new study. In a systematic review, the researchers were unable to identify a single high quality study to support the practice.  

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• 18:05 Exercise Reduces Falls In Older People, Review Suggests

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  Exercise programs are an effective option for preventing falls among older people living in the community. There is less evidence at present for the effectiveness of other interventions, such as home safety improvements and vitamin D supplements, according to researchers who carried out a systematic review of the available evidence.  

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• 18:05 Novel Mechanisms Might Causally Link Type-2 Diabetes To Alzheimer's Disease

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  A gene associated with onset of type-2 diabetes also decreases in Alzheimer's disease dementia cases, a new study suggests.  

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• 18:05 New Insight Into An Old Reaction: Adenylylation Regulates Cell Signaling

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  A new study reveals the importance of adenylylation in the regulation of cell signaling from bacteria to higher organisms. The research provides new insight into bacterial pathogenesis and opens intriguing avenues for exploring post-translational modifications in eukaryotic cells.  

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• 18:05 New Laser Technique Advances Nanofabrication Process

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  Chemists have developed a new laser technique called RAPID (Resolution Augmentation through Photo-Induced Deactivation) lithography that creates ever smaller computer chip features without the use of expensive ultraviolet light.  

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• 18:05 New Technique Invented To Reveal Pancreatic Stem Cells

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  Wanted: stems cells. Just like those absconders chased by police all over the world, everybody can tell about their good deeds but none really knows how to recognize them. Now, thanks to new research, we now know how to reveal the stem cells camouflaged in the pancreas.  

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• 18:05 New Method For Detection Of Phosphoproteins Reveals Regulator Of Melanoma Invasion

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  Scientists have developed a new approach for surveying phosphorylation, a process that is regulated by critical cell signaling pathways and regulates several key cellular signaling events. The research describes the regulation of a previously uncharacterized protein and demonstrates that it plays an important role in cancer cell invasion.  

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• 17:00 RNA Used To Reprogram One Cell Type Into Another

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  For the past decade, researchers have tried to tweak cells at the gene and nucleus level to reprogram their identity. Now, working on the idea that the signature of a cell is defined by molecules called messenger RNAs, which contain the chemical blueprint for how to make a protein, researchers have found another way to change one cell type into another.  

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• 17:00 Scorpion Venom With Nanoparticles Slows Spread Of Brain Cancer

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  By combining nanoparticles with a scorpion venom compound already being investigated for treating brain cancer, researchers found they could cut the spread of cancerous cells by 98 percent, compared to 45 percent for the scorpion venom alone.  

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• 17:00 Cosmic Heavyweights In Free-for-all

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  The most crowded collision of galaxy clusters has been identified by combining information from three different telescopes. This result gives scientists a chance to learn what happens when some of the largest objects in the Universe go at each other in a cosmic free-for-all.  

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• 17:00 Worms Control Lifespan At High Temperatures

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  The common research worm, C. elegans, is able to use heat-sensing nerve cells to not only regulate its response to hotter environments, but also to control the pace of its aging as a result of that heat, according to new research.  

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• 17:00 New Chemical Reaction For DNA Production In Bacteria And Viruses Discovered

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  Scientists have discovered a new chemical reaction for producing one of the four nucleotides, or building blocks, needed to build DNA. The reaction includes an unusual first step, or mechanism, and unlike other known reactions that produce the DNA building block, uses an enzyme that speeds up, or catalyzes, the reaction without bonding to any of the compounds, or substrates, in the reaction. This findings could help lead to development of new antibacterial and antiviral drugs.  

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• 06:00 Caffeine Appears To Be Beneficial In Males, But Not Females, With Lou Gehrig's Disease

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  Lou Gehrig's disease is believed to involve an interplay between genetic predisposition and environmental factors. One environmental factor is diet. With oxidative stress (which damages the cells) a common concern in ALS pathology, researchers have examined what role antioxidants might play. Coffee is a potent dietary antioxidant, and recently been used to study the disease in an animal model. The findings indicate that coffee appears to be beneficial for males with ALS but not for females.  

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• 06:00 College Students Better Prepared With California's Early Assessment Program

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  California's Early Assessment Program is paying off in fewer college freshmen who require remedial math and English, a new study suggests.  

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• 06:00 Computational Model Examines The Pathways Of Alzheimer's That Strikes At The Young

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  Familial Alzheimer's disease strikes individuals as early as their 20s. Researchers have constructed a simple computational model (series of equations) to measure whether certain variables -- genetic mutations in proteins and "tau" tangles -- might be predicative of the development of the disease. While no links were found between amyloid beta plaque and tau tangles, modeling is a useful way for better understanding this complex, multi-layered disease.  

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• 06:00 Differences Among Exercisers And Nonexercisers During Pregnancy

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  No one doubts that mothers -- especially pregnant mothers -- are among the busiest people on earth. And while the benefits of exercise for these women and their developing fetuses are widely known, many expectant mothers do not exercise. A survey examining daily activities of moms-to-be will soon be released as part of a larger study looking at the effect of maternal exercise on fetal development. The results suggest, among other things, that exercising during pregnancy does not require "stealing" time from other activities.  

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• 06:00 Early Isolation Linked To Enhanced Response To Cocaine

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  Drug addiction affects millions of people around the world, causing numerous problems ranging from emotional and psychological difficulties to physical and health issues. Initial drug use can be motivated by curiosity or peer pressure, but in some animals, such as rats, it can also be the result of a stressful early life event, such as social isolation. A new study examines the impact of social isolation on the animal's response to cocaine.  

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• 06:00 Effects Of Maternal Exercise On Fetal Breathing Movements

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  Exercise has many benefits for adults, teens, and youngsters. It is less clear what benefit, if any, exercise may have during fetal growth during gestation. One important study is now complete and the findings suggest a potential benefit of maternal exercise on fetal development because of the link between fetal breathing movements and the developing autonomic nervous system.  

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• 06:00 Inexpensive Drug Appears To Relieve Fibromyalgia Pain

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  A small pilot study was conducted over a 14-week period to test the new use of a low dose of a drug called naltrexone for the treatment of chronic pain. The drug, which has been used clinically for more than 30 years to treat opioid addiction, was found to reduce symptoms of pain and fatigue an average of 30 percent over placebo.  

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• 06:00 Laughter Remains Good Medicine

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  More on the mind-emotion-disease model: A new study finds that "mirthful laughter," coupled with standard diabetic treatment, raises good cholesterol and may lower heart attack risk.  

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• 06:00 Let’s Get Non-verbal, Electronically

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  Researchers have developed a suite of tools to add non-verbal cues to email, phone calls, chats and other channels of electronic communication. It is fascinating work, and the real-world applications are even more compelling.  

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• 06:00 Low Lead Levels In Children Can Affect Cardiovascular Responses To Stress

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  Even low levels of lead found in the blood during early childhood can adversely affect how the child's cardiovascular system responds to stress and could possibly lead to hypertension later in life  

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• 06:00 Male Sex Dysfunction Drugs Show Promise In The Lab For Treating Female Sexual Disorders

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  New evidence suggests that female sexual dysfunction may be, in part, the result of inadequate supply of blood to the female genitals. A new study in an animal model suggests that the drugs that help men may some day also address some forms of FSD.  

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• 06:00 New Anti-asthmatic And Anti-inflammatory Drugs Without Adverse Side Effects, Suggests Study

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  Antedrug design is a new approach to creating safer drugs that attack a problem such as inflammation then quickly become inactive before they can cause damage. In a new study researchers synthesize a group of corticosteroids that have anti-asthmatic and anti-inflammatory properties but without adverse side effects.  

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