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Science News Archive May 2000 - Page 5


Page 5 of 6

UT Southwestern researchers recommend very high fiber diet for type II diabetics

A study published in The New England Journal of Medicine found that a high-fiber diet can lower blood glucose levels and decrease insulin levels in patients with type II diabetes. Patients who consumed 50 grams of fiber per day showed a 10% reduction in glucose levels, compared to the recommended 24 grams of fiber per day.

SourceUT Southwestern Medical Center·JournalNew England Journal of Medicine·DateMay 10, 2000

Sleep apnea likely to lead to hypertension

Researchers found that even mild to moderate sleep apnea significantly increases the risk of hypertension, with graver levels associated with higher likelihood. The study used data from the Wisconsin Sleep Cohort Study and found a substantial risk of hypertension in those with mild to moderate sleep apnea.

SourceUniversity of Wisconsin-Madison·JournalNew England Journal of Medicine·DateMay 9, 2000

Single-isotope silicon helps chips keep their cool

Scientists have discovered that single-isotope silicon can conduct heat more efficiently than natural silicon, with a 60% improvement in thermal conductivity at room temperature. This enhancement is attributed to the suppression of phonon scattering caused by fluctuations in atomic masses, resulting in improved heat transfer rates.

SourceMax-Planck-Gesellschaft·JournalSolid State Communications·DateMay 9, 2000

Report highlights of TRANSPLANT 2000

The meeting featured key findings on pediatric transplantation, mandatory liver sharing benefits, new tests predicting rejection, and advancements in immunosuppression. Researchers discovered a test that can predict organ rejection days or weeks before symptoms appear, reducing valuable treatment time.

Ultrasensitive method for the diagnosis of prion diseases (Creutzfeldt-Jakob disease and BSE)

Researchers have developed a novel diagnostic technique to directly detect prions in the cerebrospinal fluid, which is easily accessible for diagnostic purposes. This breakthrough method uses dual-color scanning for intensely fluorescent targets to identify single prion particles with high sensitivity.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 8, 2000

Cowbirds' winning songs reflect brainpower

A study by Cornell researchers found a close correlation between cowbird brain size and its singing ability, which attracts females. The research suggests that visual and sexual selection factors go hand-in-hand in determining mating success among male cowbirds.

SourceCornell University·JournalBehavioral Neuroscience·DateMay 8, 2000

Key DNA enzyme can tolerate more mutations than expected

A new study reveals that a commonly used DNA polymerase can withstand an unprecedented number of mutations without compromising its function. Researchers have identified 8,000 active mutant forms, which may have significant implications for understanding evolution, cancer research, and the development of new biotechnological applications.

SourceUniversity of Washington·JournalProceedings of the National Academy of Sciences·DateMay 8, 2000

Women who have Caesarean or assisted vaginal delivery are more likely to be rehospitalized, UW study says

A University of Washington study reveals that women who have Caesarean or assisted vaginal deliveries are at a higher risk of rehospitalization compared to those who have unassisted vaginal deliveries. The study found significant risks for complications such as uterine infection, postpartum hemorrhage, and cardio-pulmonary conditions.

SourceUniversity of Washington·JournalJAMA·DateMay 8, 2000

Accountability makes for better decisions

A study by Cornell University researchers found that auditors tend to make more objective decisions than salespeople due to their legal liability. However, when salespeople are held accountable for their decisions, their bias is reduced. The study suggests that making decisions based on facts rather than personal biases can lead to bet...

SourceCornell University·JournalManagement Science·DateMay 8, 2000

Cigarette smoking: Neuroticism and genes

Research reveals a strong interaction between neuroticism and the serotonin transporter gene in influencing cigarette smoking behavior. Individuals with poorly expressed serotonin transporter genotypes and high levels of neuroticism face significant challenges in quitting smoking. This study suggests personalized approaches to smoking ...

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateMay 7, 2000

Jews are the genetic brothers of Palestinians, Syrians, and Lebanese

A recent study published in the Proceedings of the National Academy of Sciences found that Jewish men share a common set of genetic signatures with non-Jews from the Middle East, including Palestinians, Syrians, and Lebanese. This suggests that Jews and Arabs are more closely related to one another than to non-Jews from other areas of ...

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalProceedings of the National Academy of Sciences·DateMay 7, 2000

A new picture of the brain may reveal the key to Alzheimer's

A new imaging technique reveals disrupted microcolumns in brains affected by Alzheimer's disease and Lewy body dementia, suggesting a link between microcolumn organization and cognitive impairment. The study found that the absence of microcolumns correlates with the number of fibrillary tangles, but not senile neuritic plaques.

SourceBoston University·JournalProceedings of the National Academy of Sciences·DateMay 7, 2000

New genes and old genes contribute to personality traits

Researchers found associations between certain personality traits and a polymorphic region in the human AP-2beta gene. These traits include muscular tension, guilt, somatic anxiety, psychasthenia, and indirect aggression. The study suggests a novel approach to understanding the genetic basis of psychiatric disorders and personality.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateMay 7, 2000

Chill out

Researchers at Michigan State University have developed a new thermoelectric material that can cool computer chips more efficiently than existing materials. This innovation has the potential to increase computer speed and extend processor lifetimes, making it an attractive solution for the Navy's environmentally friendly cooling needs.

Genes and violent suicide

Researchers found a significant association between the L/S and S/S alleles of the serotonin transporter gene promoter region and suicidal tendencies in individuals with unknown psychiatric diagnosis. The study suggests that genetic factors, such as the 5-HTTLPR polymorphism, may contribute to autoaggressive behavior and violent suicide.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateMay 7, 2000

Asthma can affect sex life, study finds

Research found that asthma negatively affects the sex lives of nearly two-thirds of patients, with psychological characteristics like depressive symptoms increasing the risk. The study suggests a potential link between asthma symptoms and sexual activity, highlighting the need for healthcare providers to address this issue.

UCSF study reveals mechanism of telomerase enzyme that could lead to target for cancer therapy, cell regeneration

Researchers at UCSF have discovered a region in the telomerase enzyme that could be targeted to kill cancer cells and regenerate damaged cells. The discovery provides new insights into the mechanism of telomerase and its potential as a therapeutic target, as well as its role in regulating cell life span.

Radar shows giant, bone-shaped asteroid

Astronomers have obtained radar images of a giant, dog bone-shaped asteroid called 216 Kleopatra, located in the main asteroid belt between Mars and Jupiter. The asteroid is about 217 kilometers long and 94 kilometers wide, with a shape that resembles a distorted dumbbell or dog bone.

SourceCornell University·JournalScience·DateMay 3, 2000