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Science News Archive May 2005 - Page 13


Page 13 of 16

New blood test for ovarian cancer screening

Researchers at Yale University have developed a new blood test for ovarian cancer screening using four biomarkers, showing high sensitivity and specificity. The test predicts cancer in patients whose levels of two or more biomarkers fall within a certain warning area.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateMay 9, 2005

Combating antibiotic resistance

Researchers propose that antibiotic-mediated DNA damage triggers a bacterial repair mechanism, increasing the likelihood of mutations leading to antibiotic resistance. Blocking this pathway could provide a promising strategy for controlling the spread of superbugs.

SourcePLOS·JournalPLOS Biology·DateMay 9, 2005

African-Americans and Caucasians have similar emotional brain activity when seeing African-Americans

Researchers found that five out of eight African Americans and seven out of eleven Caucasians showed increased amygdala activity when viewing expressionless African American photos compared to Caucasian photos. This suggests that people from both groups have similar emotional brain responses to the same stimulus.

SourceUniversity of California - Los Angeles·JournalNature Neuroscience·DateMay 9, 2005

Deep thoughts of a birdbrain

A new study reveals that neurons in a bird's brain region, analogous to the mammalian prefrontal cortex, selectively fire when birds are told to remember and stop firing when they are told to forget. This suggests that the avian brain may be capable of executive control, similar to humans.

SourcePLOS·JournalPLOS Biology·DateMay 9, 2005

Killer dinosaurs turned vegetarian

Scientists have discovered a new species, Falcarius utahensis, in Utah that provides clues about the evolution of plant-eating dinosaurs. The dinosaur had leaf-shaped teeth and a larger gut to digest plant material, and its neck and forelimbs were more elongated for reaching plants.

SourceUniversity of Utah·JournalNature·DateMay 6, 2005

Researchers develop promising new gene network analysis method

A new tool for tracing human gene connections has been developed, enabling the study of complex systems like power grids and neural networks. The research used a novel approach to analyze gene activity in response to c-Myc activation, revealing over 1,000 genes significantly altered by the protein.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateMay 6, 2005

WHO's HIV initiative at risk of failing

The 3 by 5 program faces challenges in achieving its goal of treating 3 million people with HIV/AIDS, mainly due to insufficient financial resources (US$163 million vs US$174 million) and inadequate WHO staff deployment. Three countries, India, South Africa, and Nigeria, are crucial in addressing the issue, especially in Africa where o...

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 5, 2005

The relationship between clinical depression and chronic pain

Researchers studied brain activity in fibromyalgia patients to understand depression-pain connection. They found heightened sensitivity to pressure-induced pain in FM patients, regardless of depressive symptoms. The study suggests treating depression and physical pain separately for better outcomes.

SourceWiley·JournalArthritis & Rheumatism·DateMay 5, 2005