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Science News for August 3, 2009


Violence against mothers in bangladesh associated with health problems in young children

A study of Bangladeshi women with young children found that those who experienced intimate partner violence were more likely to report respiratory infections and diarrhea in their children. The authors suggest that trauma and anxiety from violent households can lead to suppressed immune systems, increasing the risk of illness.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 3, 2009

Groundbreaking study shows exercise benefits leukemia patients

A groundbreaking clinical trial has shown that exercise can significantly improve symptoms of fatigue and depression, increase cardiovascular endurance, and maintain quality of life for adult leukemia patients undergoing treatment. The study demonstrated a substantial reduction in total fatigue and depression scores, as well as improve...

SourceUniversity of North Carolina Health Care·JournalIntegrative Cancer Therapies·DateAug 3, 2009

Fossil plants bring Wilf distinguished speaker honor

Peter Wilf, a renowned paleobotanist, has been awarded the prestigious Distinguished Speaker honor by the Paleontological Society. His research on ancient plants and terrestrial ecosystems will be showcased through three lectures, shedding light on biodiversity, climate change, and extinction.

A 'super sensor' for cancer and CSIs

The 'super sensor' can detect pathogens, pollution, and disease biomarkers with high precision, making it suitable for various environments and situations. The device's potential applications include early warning systems for heart attacks, detecting pollutants in drinking water, and monitoring pesticides in organic food.

Embargoed news from Annals of Internal Medicine

Researchers review prophylactic treatment with neuraminidase inhibitors for seasonal flu prevention, finding them effective in preventing symptomatic but not asymptomatic flu. Improved hand hygiene and face masks implemented within 36 hours of symptom onset also show promise in reducing household transmission of pandemic flu.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateAug 3, 2009

JCI online early table of contents: Aug. 3, 2009

Researchers at Children's Hospital of Philadelphia have identified an immune mechanism responsible for graft failure in a mouse model of IUHCT. Maternal alloantibodies, produced in response to IUHCT, trigger a postnatal immune response that limits engraftment following in utero hematopoietic cell transplantation. This finding opens the...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 3, 2009

Preschool depression may continue into childhood

Research suggests preschool depression is a continuous, chronic condition that increases the likelihood of subsequent depression and psychiatric disorders. Early intervention during the preschool period may be crucial in addressing childhood major depressive disorder.

SourceJAMA Network·JournalArchives of General Psychiatry·DateAug 3, 2009

School-based program helps prevent dating violence among teens, especially boys

A school-based program that integrates healthy relationship information into the curriculum appears to reduce adolescent dating violence and increase condom use. The effects of the low-cost intervention are stronger in boys. Rates of physical dating violence were greater in control students than those who participated in the program.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 3, 2009

New insight into human ciliopathy

Researchers discover HYLS1 is a centriolar protein required for cilia formation in humans, linking hydrolethalus syndrome to the emerging class of human ciliopathies. The study expands knowledge on human ciliopathy diseases, providing insights into severe birth defects and early neonatal death.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateAug 3, 2009

Tuberculosis drugs under development expected to have major impact on the disease

New vaccines, drug regimens, and diagnostics under development have the potential to significantly impact tuberculosis. The study predicts a 39-52% decrease in TB incidence through vaccination, while new drug regimens could reduce incidence by 10-27%. Diagnostic tools may also contribute to improved outcomes.

SourceFred Hutchinson Cancer Center·JournalProceedings of the National Academy of Sciences·DateAug 3, 2009

Sick fish may get sicker

Fish populations are being increasingly affected by emerging diseases, exacerbated by climate change and other stresses. As a result, population fluctuations, extinction, reduced health, and increased susceptibility to predation are expected, according to Dr. Jim Winton of the USGS Western Fisheries Research Center.

Maternal immunity not all good for a fetus

Researchers found that fetal immune cells eliminate transplanted allogeneic blood cells, but only triggered by maternal breast milk antibodies. This limits engraftment following in utero hematopoietic cell transplantation.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 3, 2009

Epilepsy halted in mice

Researchers at the University of Leeds have successfully prevented epilepsy in mice by identifying a faulty gene as the cause. The study, published in PNAS, offers irrefutable proof that a defective version of the Atp1a3 gene is responsible for causing epileptic seizures in mice.

SourceUniversity of Leeds·JournalProceedings of the National Academy of Sciences·DateAug 3, 2009

Heavy drinkers face significantly increased cancer risk

A Montreal study links heavy consumption of beer and spirits to an increased risk of six different cancers, including oesophageal, colon, lung, pancreatic, liver, and prostate cancer. Heavy drinkers face a sevenfold increased risk of esophageal cancer and an 80% higher risk of colon cancer.

SourceMcGill University·JournalCancer Detection and Prevention·DateAug 3, 2009

Study shows seed implants a suitable prostate cancer treatment option for men of all ages

A new study by Louis Potters and colleagues found that permanent prostate brachytherapy is an effective treatment option for younger patients diagnosed with prostate cancer, with success rates comparable to older patients. The study analyzed data from 2,119 patients and showed that age didn't impact the long-term therapeutic outcome of...

SourceNorthwell Health·JournalThe Journal of Urology·DateAug 3, 2009

Obesity is a poor gauge for detecting high cholesterol levels in children

A University of Michigan research suggests that using body mass index (BMI) to detect high cholesterol in children may not be effective. The study found that approximately 50% of children with abnormal cholesterol levels would be identified, but also up to 30% of healthy-weight kids would be tested unnecessarily.

SourceMichigan Medicine - University of Michigan·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 3, 2009

'SIRT'ain security: the protein SIRT3 protects the heart

A new study reveals that Sirt3 helps protect the mouse heart by blocking cardiac hypertrophic response through Foxo3a-dependent antioxidant defense mechanisms. Mice lacking Sirt3 developed enlarged hearts, while those overexpressing Sirt3 were protected from cardiac hypertrophy under similar conditions.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 3, 2009

Pain relief only 1 motive for opioid use among high school seniors

A study of high school seniors found that most who took opioid medications without a prescription did so for reasons other than pain relief, including relaxation and getting high. Students who used the drugs only for pain relief were less likely to engage in heavy drinking or other substance use.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 3, 2009

Neck surgery for cervical spine disorders found to alleviate associated headaches

A new study published in the Journal of Bone and Joint Surgery found that patients who undergo anterior cervical reconstructive surgery can experience significant improvement in headache symptoms. The study, which evaluated over 1000 patients, suggests that neck surgery can alleviate headaches associated with cervical spine disease.

SourceAmerican Academy of Orthopaedic Surgeons·JournalJournal of Bone and Joint Surgery·DateAug 3, 2009

Use of a restraining device in the subacute phase after a stroke no better than rehabilitation alone

A pilot study published in Physical Therapy found that restraining patients' unaffected upper limbs during the subacute phase after a stroke did not improve motor impairment and capacity compared to standard rehabilitation. Researchers applied constraint-induced movement therapy (CIMT) with a restraining device, but the results were no...

SourceAmerican Physical Therapy Association·JournalPhysical Therapy·DateAug 3, 2009

Daily temperature shifts may alter malaria patterns

Researchers found that daily temperature fluctuations significantly impact malaria parasite growth and transmission rates. In areas with cooler temperatures, a fluctuation of 45 degrees Fahrenheit reduces the parasites' incubation period, making them infectious nearly two weeks earlier.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateAug 3, 2009

Structure of antibiotic ramoplanin reveals promising mechanism

Researchers at Duke University have solved the structure of Ramoplanin A2, a candidate antibiotic that can kill pathogenic bacteria by interrupting cell membrane formation. The molecule forms U-shaped structures that bind to Lipid II, preventing its participation in membrane synthesis and leading to bacterial death.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateAug 3, 2009

Scientists report original source of malaria

Researchers believe a parasite found in chimpanzees in equatorial Africa is the original source of malignant malaria, transmitted to humans through a single mosquito around 5,000 years ago. This discovery could aid the development of a vaccine for malaria, which affects 500 million people annually.

SourceUniversity of California - Irvine·JournalProceedings of the National Academy of Sciences·DateAug 3, 2009