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Science News Archive December 2002 - Page 2


Page 2 of 7

More dialysis, highly permeable artificial kidney may not aid some, UT Southwestern researcher finds

A recent study published in The New England Journal of Medicine found that higher doses of hemodialysis and more permeable artificial kidneys did not improve survival rates for all patients with end-stage kidney disease. However, selected subgroups, such as women and those treated with a more permeable membrane, showed significant impr...

SourceUT Southwestern Medical Center·JournalNew England Journal of Medicine·DateDec 18, 2002

Preemies’ temperaments shift in first year of life

Preterm infants exhibit intense moods, withdrawal to new stimuli, and irregular bodily functions at 6 weeks, but these challenges resolve by six months and 12 months as they adapt to full-term infant-like behavior, according to a study published in the Journal of Developmental and Behavioral Pediatrics.

SourceCenter for Advancing Health·JournalJournal of Developmental & Behavioral Pediatrics·DateDec 18, 2002

Hydrogen-powered cars, other futuristic products all in a day's work for NASA space product manager

Jeneene Sams, a NASA space product manager, works with companies to conduct experiments in space that improve their products and ultimately people's lives. She sponsors two commercial experiments: one on growing zeolite crystals that can store hydrogen, a pollution-free fuel, and another testing a fire-fighting system in microgravity.

Other highlights of the December 18 JNCI

Researchers investigated the association between alcohol consumption and lung cancer risk, finding no statistically significant link. The Journal of National Cancer Institute also published studies on body surface area-based dosing for anticancer drugs and carbohydrate binding protein's potential to inhibit tumor growth.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateDec 17, 2002

NHLBI study finds traditional diuretics work better than newer medicines for treating hypertension

A recent NHLBI study found that traditional diuretics are more effective than newer antihypertensive medications in treating high blood pressure and preventing cardiovascular events. The study, which involved over 42,000 participants, showed that diuretics reduced the risk of heart attacks and strokes by 34% compared to the other groups.

Increased bone mass in a calcitonin knockout mouse full of surprises

Researchers discovered that calcitonin knockout mice have greater bone mass and increased bone formation, suggesting a novel function for the calcitonin gene product. This finding has implications for preventing bone loss associated with estrogen deficiency, potentially leading to new treatments for post-menopausal osteoporosis.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 17, 2002

JCI table of contents, December 15, 2002

Research reveals that mice without the calcitonin gene exhibit greater bone mass and formation, suggesting a novel function for this hormone. This discovery opens up new avenues for preventing bone loss associated with estrogen deficiency.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 17, 2002

Researchers explain how the brain integrates head position and acoustics

Researchers discovered that fusiform cells in the cochlear nucleus integrate acoustic information with head and ear position information to pinpoint sound sources. The study found that synapses transmitting acoustic information are stable, while those carrying head and ear position information exhibit plasticity.

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateDec 16, 2002

Dancing molecules on the make

Researchers at Max Planck Institute for Solid State Research successfully observed the formation and dynamics of coordination compounds on a copper surface. They directly imaged single molecules and monitored their movements, revealing how rotating molecules act as dynamic atom traps for individual Cu atoms.

SourceMax-Planck-Gesellschaft·JournalJournal of the American Chemical Society·DateDec 16, 2002

Patients' lives at risk from needless lung scans

A recent study found that injecting contrast material before a CT scan can increase lung tissue volume in critically ill patients with ALI. This increase is attributed to fluid accumulation in the lungs, making breathing harder for these patients. The authors recommend avoiding this procedure in critically ill patients.

SourceBMC (BioMed Central)·JournalCritical Care·DateDec 16, 2002

Serotonergic dysfunction doesn’t cause suicide

Researchers found no significant differences in TPH protein level or 5HT2A receptor density between suicide victims and controls. The A218C polymorphism of the TPH gene was shown to alter TPH protein level, suggesting its role in serotonergic function rather than biological suicidality.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateDec 16, 2002

Drinks of the father

Researchers found that a father's maximum number of drinks consumed in 24 hours is associated with disruptive behavior disorders, early substance-use initiation, and early substance-related disorders in his children. The study suggests that this 'phenotype' could supplement diagnostic categories for alcohol dependence.

Antarctic ice seals life's fate

Researchers find liquid lake beneath 62 feet of ice, containing seven times the saltiness of normal seawater. The isolated brine is believed to harbor life due to its chemical composition, with microbes returning to life after gradual melting.

SourceUniversity of Illinois Chicago·JournalProceedings of the National Academy of Sciences·DateDec 16, 2002

Designing a robot that can sense human emotion

Researchers at Vanderbilt University are developing a robot that can detect and respond to human emotions. They use physiological signals such as heart rate, skin conductance, and facial muscle activity to analyze a person's psychological state. The robot is programmed to recognize specific patterns and provide supportive responses.

SourceVanderbilt University·JournalRobotica·DateDec 16, 2002

Researcher debates changing attitudes of Americans: historical, generational, or aging?

A researcher challenges the idea that generations drive attitude changes in America, arguing instead that individual life experiences, aging, and historical events play a significant role. Alwin's study suggests that social change is more complex than previously thought, with multiple factors contributing to generational differences.

SourceAmerican Sociological Association·Journalسياقات اللغة والدراسات البينية·DateDec 16, 2002