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Science News Archive 2004 - Page 28


Page 28 of 135

Procter & Gamble wins top decision-making award at operations research meeting

Procter & Gamble has won the INFORMS Prize for its far-reaching integration of operations research into organizational decision making. The company's use of analytics and operations research has contributed substantially to its bottom line over the last decade, driving strategies for manufacturing capacity and distribution networks.

Ovarian cancer rates across Europe

Research found ovarian cancer rates levelling across Europe, with declining incidence and mortality rates in northern countries, particularly among younger age groups. In contrast, southern and eastern European countries saw increasing cancer incidence and mortality rates.

SourceWiley·JournalInternational Journal of Cancer·DateOct 25, 2004

Tip sheet for the October 26, 2004 Neurology

Researchers found that switching from brand phenytoin to generic phenytoin can lead to increased seizures in epilepsy patients. Additionally, a study on concussion history and symptom reporting found that athletes with previous concussions reported fewer symptoms immediately after the injury but more symptoms one week later. The Americ...

SourceAmerican Academy of Neurology·JournalNeurology·DateOct 25, 2004

Implantable heart defibrillators

A prospective follow-up study found that implantable cardioverter defibrillators can significantly reduce the risk of recurring cardiac arrests after out-of-hospital incidents. Increasing access to these devices could have a substantial impact on reducing Canada's high mortality rate from sudden cardiac arrest.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 25, 2004

Doctors can improve colorectal cancer screening rates

A UCLA study of 22,343 adults aged 50+ in California found that 54% had a recent CRC test, with disparities seen among Latinos, women, and those without insurance or continuity of care. Improving access to screening through policies and education programs can help address these gaps.

SourceWiley·JournalCancer·DateOct 25, 2004

Nitric oxide is essential for animal development

Researchers discover nitric oxide synthase is crucial for Drosophila development, leading to the death of flies lacking the gene. The study uses genetic analysis and mutations to provide conclusive evidence that NOS function is essential for an organism's development.

SourceCell Press·JournalCurrent Biology·DateOct 25, 2004

Predicting infection risk of mosquito-borne disease

Researchers develop mathematical model to predict mosquito-borne infection risk, finding that peak biting rates occur near breeding sites and highest human density. The proportion of infectious mosquitoes peaks where older populations are found, leading to surprising predictions about risk hotspots.

SourcePLOS·JournalPLOS Biology·DateOct 25, 2004

Racial differences, poverty linked to mammography use

A new study found that racial differences and poverty significantly impact mammography use among poor, rural women over 40. Native American and African American women had lower knowledge of breast cancer screening procedures compared to white women. The study sheds light on the need for targeted interventions to improve cancer screenin...

SourceOhio State University·JournalCancer·DateOct 25, 2004

Deciphering an autism mystery

Researchers have identified a specific gene, EN2, that contributes to autism spectrum disorder (ASD). Variations in this gene may affect brain development and behavior. The study also found changes in neurotransmitter systems, including acetylcholine and serotonin, which may disrupt communication between cells.

Infection, not lack of oxygen, plays larger role in premature infant brain injury

A study published in American Journal of Obstetrics and Gynecology found that infections occur around birth are associated with an increased risk of periventricular leukomalacia (PVL), a condition causing brain tissue death. PVL is the most common form of brain injury in premature infants, resulting in cerebral palsy.

SourceJohns Hopkins Medicine·JournalAmerican Journal of Obstetrics and Gynecology·DateOct 24, 2004

Promise of stem cells amplified

Scientists have successfully used stem cells to restore movement in paralyzed rats by transplanting oligodendrocytes, a type of cell that insulates nerve signals. Additionally, researchers have delivered GDNF, a factor aiding neuron survival, to patients with Parkinson's and Huntington's diseases using genetically modified astrocytes.

Secret tobacco industry documents show Philip Morris worked to preserve ties with academic medicine

Researchers analyzed secret internal tobacco industry documents to show how Philip Morris used similar arguments to oppose divestment at Johns Hopkins University and Yale University. The company emphasized its financial contributions while suggesting investments in tobacco stock profits to maintain research funding.

SourceUniversity of California - San Francisco·JournalAcademic Medicine·DateOct 24, 2004

Estrogen or stimulating environment boost memory

A study by Yale University found that estrogen has no impact on memory in mice living in enriched environments, but improves spatial memory in those with standard conditions. The results suggest that estrogen benefits mice from un-stimulating environments more than those raised in stimulating ones.

SourceYale University·JournalNeuroscience·DateOct 22, 2004

Gene for common form of Parkinson's pinpointed

Researchers pinpointed a specific gene, dardarin, causing PARK8-linked Parkinson's disease, affecting approximately 8% of Basque people with PD. The mutation is expressed throughout the brain and has characteristics of a molecular switch, suggesting a potential role in protein phosphorylation.

SourceCell Press·JournalNeuron·DateOct 22, 2004

Lab study defines and blocks mechanism that lets brain tumors sidetrack immune response

Researchers at Cedars-Sinai Medical Center have discovered a mechanism by which brain tumors can evade the immune system, leading to impaired cellular immunity in patients with glioma. By blocking COX-2 expression, the study found that tumor-killing T cell responses can be restored, offering new potential treatments for brain tumors.

SourceCedars-Sinai Medical Center·JournalThe Journal of Immunology·DateOct 22, 2004

Accelerated heartbeart mystery: Is odd electrical wave the key?

Researchers at Johns Hopkins University have found a possible link between the strange electrical waves in their hearts and the cause of accelerated heartbeats. They discovered that when implanted cardioverter defibrillators triggered a series of unusual electrical pulses, they sometimes triggered the formation of these same spiral waves.

SourceJohns Hopkins University·JournalProceedings of the National Academy of Sciences·DateOct 22, 2004