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Science News Archive May 2009


Page 1 of 22

Penn researchers discover genetic risk factor for testicular cancer

A study published in Nature Genetics found that men with two copies of the KITLG gene have a 4.5-fold higher risk of testicular cancer, while those with two copies of the SPRY4 gene have a 1.48-fold higher risk. The discovery sheds light on genetic factors contributing to the disease and may help identify critical environmental factors.

Liver disease 'shrunk' by blood-pressure drug

A clinical trial has shown that losartan, a blood-pressure medicine, can shrink liver scarring and allow the organ to repair itself in some patients with early-stage liver failure. The drug works by blocking a signalling pathway that causes scar tissue to accumulate, allowing the damaged area of the liver to be repaired.

SourceNewcastle University·JournalGASTROENTEROLOGY·DateMay 31, 2009

International Serious Adverse Events Consortium announces initial study results in its global research collaboration to identify genetic markers related to drug induced liver injury

Researchers have discovered genetic markers that predict individuals at risk for serious drug-induced liver injury. The study found that HLA-B*5701 is a major determinant of liver injury induced by flucloxacillin, and variations on chromosome 3 also influence the risk.

Recognizing signs and symptoms of acute HF

Acute exacerbations of heart failure are frequent and serious, but recognizing early warning signs can minimize delays in treatment. Shortness of breath is the most common symptom, often described as suffocation or heavy breathing. Families should also be taught to recognize other symptoms such as cough, chest pain, and fatigue.

Novel biomarkers in heart failure

Several novel biomarkers have been discovered in heart failure syndrome, including ST2, troponins, AGEs, adrenomedullin, and estradiol. These biomarkers offer valuable information for diagnosis, risk stratification, and treatment monitoring, as well as providing insights into the disease's underlying pathophysiology.

AGU journal highlights -- May 29, 2009

Scientists have discovered new ways to measure thundercloud electrostatic fields, study the link between tropical cyclones and global warming, and understand the adhesive properties of lunar dust. Researchers also explored the role of clouds in global electricity and found significant water storage and runoff patterns in the Amazon basin.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateMay 29, 2009

Theorists reveal path to true muonium

Theoretical work by SLAC researchers reveals two methods for detecting true muonium's formation and decay in electron-positron accelerators. These methods use relativistic effects to create a stable signature, making observation of the exotic atom feasible. The discovery has the potential to reveal new forms of matter.

SourceDOE/SLAC National Accelerator Laboratory·JournalPhysical Review Letters·DateMay 29, 2009

Marijuana rivals mainstream drugs for HIV/AIDS symptoms

A new study published in Clinical Nursing Research found that marijuana use is common among HIV/AIDS patients in the US to alleviate symptoms such as anxiety, depression, and nausea. The study suggests that therapeutic marijuana use merits further consideration among policy makers, despite potential risks associated with its use.

SourceSAGE Publications UK·JournalClinical Nursing Research·DateMay 29, 2009

Researchers develop light-treatment device to improve sleep quality in the elderly

A team at Rensselaer Polytechnic Institute developed a wearable device that delivers blue light directly to the eyes to improve sleep quality in older adults. The study found that exposure to blue light levels of 50 lux and 10 lux for 90 minutes suppressed nocturnal melatonin levels, indicating stimulation of the circadian system.

SourceRensselaer Polytechnic Institute·JournalChronobiology International·DateMay 29, 2009

Continuous glucose monitoring technology -- special issue of Diabetes Technology and Therapeutics

A special supplement of Diabetes Technology & Therapeutics reviews the latest research findings and critical analysis of continuous glucose monitoring (CGM) technology. CGM devices have been shown to improve glucose control, but limitations and drawbacks include finicky technology and limited physician knowledge.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalDiabetes Technology & Therapeutics·DateMay 29, 2009

Ghost remains after black hole eruption

Astronomers observe a high-energy apparition, known as an X-ray ghost, lingering around a supermassive black hole in the Chandra Deep Field-North. The source, HDF 130, is 10 billion light years away and existed 3 billion years after the Big Bang.

SourceChandra X-ray Center·JournalMonthly Notices of the Royal Astronomical Society·DateMay 28, 2009

Antibiotic-resistant bacteria found in fertilizer

Researchers have detected vancomycin resistant enterococci (VRE) in Swedish sewage sludge, highlighting the potential for antibiotic resistance genes to spread through the food chain. The study emphasizes the need for more efficient treatment of sewage sludge to prevent the spread of antimicrobial resistance.

SourceBMC (BioMed Central)·JournalActa Veterinaria Scandinavica·DateMay 28, 2009