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Science News Archive February 2019 - Page 27


Page 27 of 40

New role for death molecule

A team of researchers has found a novel function for the signaling molecule TRADD, which was previously considered dispensable. Without RIPK1 protein, having two copies of the TRADD gene or no copies results in cell death, while one copy promotes survival. This discovery sheds light on regulating cell death and survival pathways.

SourceThomas Jefferson University·JournalNature Communications·DateFeb 11, 2019

Diverse scents of woodland star wildflowers driven by coevolution with pollinators

A study of woodland star wildflowers found remarkable diversity in their scent compounds, with many species and populations producing unique floral bouquets to attract insect pollinators. The findings suggest that natural selection has shaped the biochemistry of floral scents in different ways among different populations.

SourceUniversity of California - Santa Cruz·JournalProceedings of the National Academy of Sciences·DateFeb 11, 2019

Sophisticated blood analysis provides new clues about Ebola, treatment avenues

Researchers analyzed blood samples from Ebola patients in Sierra Leone to understand the progression of the disease and potential treatments. The study identified a critical role for choline and microvesicles in the virus's progression, with survivors showing higher levels of phosphatidylcholines and healthy individuals having lower PS...

SourceDOE/Pacific Northwest National Laboratory·JournalProceedings of the National Academy of Sciences·DateFeb 11, 2019

Working proteins make good use of frustration

Researchers surveyed known enzyme structures and found that active sites often have conflicting instructions, allowing for a balance between stability and functionality. This 'extended frustration' extends beyond the first shell of amino acids, supporting catalytic ability and enabling enzymes to modify target molecules efficiently.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateFeb 11, 2019

Weyl goes chiral

Physicists at ETH Zurich have created acoustic metamaterials that interact differently with Weyl fermions of opposite chirality, a crucial aspect of particle physics. This discovery enables the manipulation of chiral channels, giving independent access to these particles in bulk systems.

SourceETH Zurich Department of Physics·JournalNature Physics·DateFeb 11, 2019

New therapeutic target found for aggressive pediatric cancers with few treatment options

A new therapeutic target has been identified for aggressive pediatric cancers with few treatment options. The researchers discovered that malignant rhabdoid tumors may be sensitive to drugs that block the cancer cell's ability to dispose of misfolded proteins, and a Phase II clinical trial is underway to investigate this approach.

How your smartphone is affecting your relationship

A growing body of research suggests that smartphones can negatively impact face-to-face social interactions, leading to feelings of ignored, annoyed, or pushed away. The constant access to text messaging and social media makes it easier for people to disclose personal information and respond to others in their large social networks.

SourceUniversity of Arizona·JournalPerspectives on Psychological Science·DateFeb 11, 2019

New model predicts how ground shipping will affect future human health, environment

A new model developed by the University of Illinois predicts how ground shipping will affect future human health and the environment. The study found that a carbon tax could lead to a 24% reduction in greenhouse gas emissions, while enforcing truck fleet maintenance could cut particulate emissions by one-third by 2050.

Smartphone-based mindfulness training reduces loneliness, increases social contact

A Carnegie Mellon University study found that smartphone-based mindfulness training can help individuals feel less lonely and interact with more people. Acceptance skills training was critical to improving social functioning outcomes, reducing daily life loneliness by 22% and increasing social contact by two interactions per day.

SourceCarnegie Mellon University·JournalProceedings of the National Academy of Sciences·DateFeb 11, 2019

New tuberculosis drug may shorten treatment time for patients

A new experimental antibiotic AN12855 has been shown to be more effective against tuberculosis than isoniazid, a decades-old drug. In mouse studies, the new drug demonstrated a much lower tendency to develop resistance and remained in tissues where Mycobacterium tuberculosis bacteria reside for longer, killing them more effectively.

SourceAmerican Society for Microbiology·JournalAntimicrobial Agents and Chemotherapy·DateFeb 11, 2019

Tracking HIV's ever-evolving genome in effort to prioritize public health resources

Researchers uncovered an unexpected pattern of HIV infection among transgender women and cisgender men in Los Angeles County. The study suggests that transgender women are at a higher risk of being in an HIV transmission network than previously thought, highlighting the need for tailored public health efforts within this community.

SourceUniversity of California - San Diego·JournalThe Lancet HIV·DateFeb 11, 2019