ScienceDaily: Top News

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• Women have stronger immune systems than men -- and it's all down to X-chromosome related microRNA
• Removal of fibroids that distort the womb cavity may prevent recurrent miscarriages, study suggests
• Central Asia's hidden burden of neglected tropical diseases: High rates of parasitic infection nearly 20 years after Soviet collapse
• Alzheimer's protein kills nerve cells in nose; Animal study may suggest way to rescue cells from disease
• New analysis of the cardiovascular risks of common non-steroidal anti-inflammatory drugs
• Venus weather not boring after all, scientists discover
• Atypical antipsychotics appear to be effective for only few off-label uses, study suggests
• Increasing dosage of saw palmetto does not appear to reduce urinary symptoms from enlarged prostate
• New 'FeTRAM' is promising computer memory technology
• What do infants remember when they forget?
• Modern shift work pattern potentially less harmful to health
• Tracing an elusive killer parasite in Peru
• New advanced biofuel identified as an alternative to diesel fuel
• New technique maps twin faces of smallest Janus nanoparticles
• Researchers use carbon nanotubes to make solar cells affordable, flexible
• People learn while they sleep, study suggests
• Biochemists identify new genetic code repair tool
• New nanostructure-based process will streamline production of magnetic materials
• How global warming could cause animals to shrink
• Exercise eases arthritis in obese mice even without weight loss
• Giant star expels multiple dust shells, astronomers find
• Treatment of common virus can reduce tumour growth, study suggests

Women have stronger immune systems than men -- and it's all down to X-chromosome related microRNA Posted: 27 Sep 2011 04:23 PM PDT As anyone familiar with the phrase "man-flu" will know women consider themselves to be the more robust side of the species when it comes to health and illness. Now new research seems to support the idea. The research focuses on the role of MicroRNAs encoded on the X chromosome to explain why women have stronger immune systems to men and are less likely to develop cancer.

Removal of fibroids that distort the womb cavity may prevent recurrent miscarriages, study suggests Posted: 27 Sep 2011 04:23 PM PDT Researchers have found the first, firm evidence that fibroids are associated with recurrent miscarriages. They have also discovered that if they removed the fibroids that distorted the inside of the womb, the risk of miscarriage in the second trimester of pregnancy was reduced dramatically -- to zero.

Central Asia's hidden burden of neglected tropical diseases: High rates of parasitic infection nearly 20 years after Soviet collapse Posted: 27 Sep 2011 03:35 PM PDT Central Asia continues to suffer from a post-Soviet economic breakdown that may have contributed to a re-emergence of several neglected tropical diseases in the area, especially among its most economically disadvantaged groups, according to a new article.

Alzheimer's protein kills nerve cells in nose; Animal study may suggest way to rescue cells from disease Posted: 27 Sep 2011 03:35 PM PDT A protein linked to Alzheimer's disease kills nerve cells that detect odors, according to an animal study. The findings shed light on why people with Alzheimer's disease often lose their sense of smell early on in the course of the disease.

New analysis of the cardiovascular risks of common non-steroidal anti-inflammatory drugs Posted: 27 Sep 2011 03:35 PM PDT An updated study gives some new information on the cardiovascular risks of non-steroidal anti-inflammatory drugs and suggests that among these commonly used drugs, naproxen and low dose ibuprofen are least likely to increase cardiovascular risk whereas diclofenac, even in doses available without prescription, elevates risk.

Venus weather not boring after all, scientists discover Posted: 27 Sep 2011 02:10 PM PDT At first glance, a weather forecaster for Venus would have either a really easy or a really boring job, depending on your point of view. The climate on Venus is widely known to be unpleasant -- at the surface, the planet roasts at more than 800 degrees Fahrenheit under a suffocating blanket of sulfuric acid clouds and a crushing atmosphere more than 90 times the pressure of Earth's. However, higher up, the weather gets more interesting, according to a new study of old data by NASA and international scientists.

Atypical antipsychotics appear to be effective for only few off-label uses, study suggests Posted: 27 Sep 2011 01:16 PM PDT A review of previous studies suggests that even though atypical antipsychotic medications are commonly used for off-label conditions such as behavioral symptoms of dementia, anxiety, and obsessive-compulsive disorder, these medications are effective for only a few off-label conditions, and that the benefits and harms of these medications for these uses vary, according to a new article.

Increasing dosage of saw palmetto does not appear to reduce urinary symptoms from enlarged prostate Posted: 27 Sep 2011 01:16 PM PDT Men with urinary problems related to an enlarged prostate who received increasing doses of the fruit extract saw palmetto did not experience a reduction in these symptoms compared to men who received placebo, according to a new study.

New 'FeTRAM' is promising computer memory technology Posted: 27 Sep 2011 12:52 PM PDT Researchers are developing a new type of computer memory that could be faster than the existing commercial memory and use far less power than flash memory devices. The technology combines silicon nanowires with a "ferroelectric" polymer.

What do infants remember when they forget? Posted: 27 Sep 2011 12:52 PM PDT Six-month-old babies are severely limited in what they can remember about the objects they see in the world; if you hide several objects from an infant, they will only remember one of those objects with any detail. But a new study finds that when babies "forget" about an object, not all is lost.

Modern shift work pattern potentially less harmful to health Posted: 27 Sep 2011 12:52 PM PDT Recent research suggests that the modern day-day-night-night shift pattern for shift workers may not be as disruptive or as potentially carcinogenic as older, more extreme shift patterns.

Tracing an elusive killer parasite in Peru Posted: 27 Sep 2011 10:43 AM PDT Despite what Hollywood would have you believe, not all epidemics involve people suffering from zombie-like symptoms -- some can only be uncovered through door-to-door epidemiology and advanced mathematics. Researchers are now in the trenches combining tried-and-true epidemiological approaches with new statistical methods to learn more about the course of a dangerous, contagious disease epidemic.

New advanced biofuel identified as an alternative to diesel fuel Posted: 27 Sep 2011 10:42 AM PDT Researchers have identified a terpene called bisabolane as a potential biofuel for replacing diesel fuel. The researchers have also engineered two strains of microbes -- a bacteria and a yeast -- that can be used in the biosynthetic production of this clean, green, renewable and domestic alternative to diesel fuel.

New technique maps twin faces of smallest Janus nanoparticles Posted: 27 Sep 2011 09:49 AM PDT Chemists have developed the first method that can rapidly and accurately map the surfaces of Janus nanoparticles, tiny particles that possess two chemically distinct faces. The findings have broad potential applications ranging from drug delivery to video displays.

Researchers use carbon nanotubes to make solar cells affordable, flexible Posted: 27 Sep 2011 09:49 AM PDT Researchers have found that metallic carbon nanotubes are 50 times more effective than semiconducting ones when used as transparent conductors in organic solar cells.

People learn while they sleep, study suggests Posted: 27 Sep 2011 09:46 AM PDT People may be learning while they're sleeping -- an unconscious form of memory that is still not well understood, according to a new study.

Biochemists identify new genetic code repair tool Posted: 27 Sep 2011 09:46 AM PDT Researchers recently reported finding a new class of DNA repair-makers. To ensure the integrity of the genetic material, cells are equipped with a "molecular toolkit" for repairing DNA damage. The toolkit is composed of a variety of different molecules -- called enzymes -- that have evolved to repair different types of DNA damage. Researchers have now discovered a new class of enzymes in that superfamily that lack the ability to repair uracil.

New nanostructure-based process will streamline production of magnetic materials Posted: 27 Sep 2011 09:46 AM PDT Scientists report for the first time designing a simpler method of preparing ordered magnetic materials than ever by coupling magnetic properties to nanostructure formation at low temperatures. The process allows them to create room-temperature ferromagnetic materials that are stable for long periods more effectively and with fewer steps than more complicated existing methods.

How global warming could cause animals to shrink Posted: 27 Sep 2011 08:24 AM PDT The way in which global warming causes many of the world's organisms to shrink has been revealed by new research.

Exercise eases arthritis in obese mice even without weight loss Posted: 27 Sep 2011 04:31 AM PDT Adding another incentive to exercise, scientists have found that physical activity improves arthritis symptoms even among obese mice that continue to chow down on a high-fat diet.

Giant star expels multiple dust shells, astronomers find Posted: 27 Sep 2011 04:26 AM PDT An international team of astronomers has discovered not less than a dozen cold dust arcs around the giant star CW Leo. The team used the sensitive PACS instrument on board the Herschel Space Observatory to detect for the first time arcs of dust far away from the star. CW Leo has expelled these shells of dust in different epochs in its life. The faintest shell we can see now was, according to the team, expelled about 16,000 years ago. In the mean time it has drifted away from the star over more than 7,000 billion kilometers.

Treatment of common virus can reduce tumour growth, study suggests Posted: 27 Sep 2011 04:26 AM PDT Researchers have demonstrated for the first time that it is possible to inhibit the growth of brain tumors by treating the common Cytomegalovirus (CMV). The virus, which is found in a wide range of tumor types, offers a possible route towards controlling tumor growth and reducing the size of the tumor as a complement to conventional cytotoxin-based therapies.

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