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Science News Archive July 2009 - Page 7


Page 7 of 23

Embarrassing illnesses no bar to information sharing

A new study published in BMC Medical Ethics found that the purpose and type of information collection were more important than the individual's condition in determining consent choices. Participants preferred more control over the use of their personal information, especially when it linked to profit or personal details.

SourceBMC (BioMed Central)·JournalBMC Medical Ethics·DateJul 23, 2009

Parasitic worms make sex worthwhile

Biologists discovered that parasites drive snails to reproduce sexually, increasing genetic diversity and resistance to infection. The study supports the Red Queen Hypothesis and Geographic Mosaic Theory, showing that host species can adapt to avoid parasite coevolution by producing genetically variable offspring.

SourceIndiana University·JournalCurrent Biology·DateJul 23, 2009

A simpler definition for major depressive disorder

A new definition of major depressive disorder (MDD) suggests that only mood and cognitive symptoms are included, excluding somatic criteria. This revised definition was found to be highly concordant with the current version in a large sample of psychiatric outpatients, offering benefits such as reduced time needed for assessment and sh...

SourceLifespan·JournalPsychological Medicine·DateJul 23, 2009

Case Western Reserve University receives $3.7M NIH grant to study autonomic nervous system link to painful bladder syndrome

Researchers will investigate whether abnormal autonomic nervous system function is the primary cause of painful bladder syndrome, a condition affecting young women with severe bladder pain and disability. The five-year study aims to lead to better understanding of the causes and possible treatments for this condition.

Stem cells not the only way to fix a broken heart

Researchers have devised a new method to fix a broken heart by coaxing adult heart muscle cells into reentering the cell cycle, allowing them to divide and regenerate healthy heart tissue. The key ingredient is neuregulin1, which may one day be used to treat failing human hearts.

SourceCell Press·JournalCell·DateJul 23, 2009

Medical ethics and Guantanamo Bay: Time for reform

The US Department of Defense has been criticized for its handling of medical care at Guantanamo Bay, with a report highlighting concerns over the use of medical personnel in interrogation and force-feeding of detainees on hunger strike. Independent examinations of released detainees have shown severe psychological damage from detention.

SourceThe Lancet_DELETED·JournalThe Lancet·DateJul 23, 2009

Injection reverses heart-attack damage

A growth factor called neuregulin1 can spur heart-muscle growth and recovery of cardiac function when injected systemically into animals after a heart attack. Researchers were able to restart the cell cycle with NRG1, stimulating cardiomyocytes to divide and make copies of themselves - even though they are not stem cells.

Protein excreted in urine may be help in diagnosing kidney disease caused by HIV

Researchers at Columbia University Medical Center have discovered a protein called NGAL that can help diagnose kidney disease caused by HIV. High levels of the protein in urine may indicate the presence of HIV-associated nephropathy, allowing for earlier intervention and potentially preventing kidney failure.

SourceColumbia University Irving Medical Center·JournalJournal of the American Society of Nephrology·DateJul 23, 2009

New windows opened on cell-to-cell interactions

Researchers at the University of Oregon have discovered a new class of self-assembling materials that can control colloidal interactions by applying biological molecules from cell membranes. The findings suggest that specially tweaked biological membranes can serve as control knobs to direct materials to specific actions.

SourceUniversity of Oregon·JournalJournal of the American Chemical Society·DateJul 22, 2009

New silver nanoparticle skin gel for healing burns

Researchers have developed a novel silver nanoparticle skin gel that effectively kills harmful bacteria, including drug-resistant microbes, while promoting wound healing without causing harm to healthy skin. The gel contains 30 times less silver than traditional antimicrobial agents, making it a safer option for burn patients.

SourceAmerican Chemical Society·JournalMolecular Pharmaceutics·DateJul 22, 2009

Hepatitis C: No overall difference in sustained viral response in most widely used treatments

A large study comparing widely used treatments for chronic hepatitis C infection found similar safety and efficacy in achieving long-term viral eradication. However, subgroup analysis revealed that certain approaches may be better suited for women and minorities, with some treatments showing higher success rates in these groups.

SourceDuke University Medical Center·JournalNew England Journal of Medicine·DateJul 22, 2009

AIDS discovered in wild chimpanzees

A new study reveals that chimpanzees infected with SIV, the precursor to HIV-1, contract and die from AIDS. Infected females were less likely to give birth, and infants born to infected mothers were unlikely to survive. The virus was transmitted sexually and through mother's milk.

SourceUniversity of Minnesota·JournalNature·DateJul 22, 2009

Music is the engine of new U-M lab-on-a-chip device

Researchers at U-M have developed a lab-on-a-chip device that uses sound waves to drive experimental samples through the device. This innovation replaces traditional electromechanical valves with resonance cavities, amplifying specific musical notes to create air pressure controlling droplets.

SourceUniversity of Michigan·JournalProceedings of the National Academy of Sciences·DateJul 22, 2009

For abused women, leaving is a complex and confusing process

A new study finds that abused women experience a five-stage process of leaving, marked by boundary ambiguity, emotional disconnection, and preparation to leave. Women often struggle with clarity and connection once they've left, highlighting the need for support and understanding from social workers, friends, and family.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJournal of Family Theory & Review·DateJul 22, 2009