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Science News Archive April 2024 - Page 9


Page 9 of 41

Unveiling the mysteries of cell division in embryos with timelapse photography

Researchers used medaka fish, CRISPR and new imaging techniques to study embryonic mitosis. They discovered unique spindles assemble in early embryos and found Ran-GTP plays a decisive role in spindle formation, which diminishes later in development. The study paves the way for further exploration of embryonic mitosis.

SourceOkinawa Institute of Science and Technology (OIST) Graduate University·JournalNature Communications·TypeImaging analysis·DateApr 24, 2024

Neurons spoil your appetite

Researchers at Max Planck Institute for Biological Intelligence have discovered a brain circuit that inhibits food intake during nausea. The circuit involves special nerve cells in the amygdala, which send appetite-suppressing signals to distant brain regions, resulting in a loss of appetite.

SourceMax-Planck-Gesellschaft·JournalCell Reports·DateApr 24, 2024

A university lecture, with a dash of jumping jacks

A study by Ohio State University professor Scott Hayes found that incorporating five-minute exercise breaks into lectures can improve students' attention, motivation, and peer engagement. Students reported positive impacts on their course enjoyment and even designed creative exercise sessions, such as a 'picking apples' theme.

SourceOhio State University·JournalFrontiers in Sports and Active Living·TypeObservational study·DateApr 24, 2024

Hurricanes jeopardize carbon-storing New England forests

A new study reveals that a single hurricane can wipe out 5-10% of New England's total aboveground forest carbon through tree damage. The research team analyzed the impact of 10 powerful hurricanes on the region's forests and found that future storms could pose a significant risk to carbon offset programs.

SourceDartmouth College·JournalGlobal Change Biology·TypeComputational simulation/modeling·DateApr 24, 2024

Global team of researchers, including three New York botanical garden scientists, publish ground-breaking study of plant evolution with many potential uses, from plant conservation to the discovery of new medicines

A global team of researchers, led by the Royal Botanic Gardens, Kew, sequenced DNA from over 9,500 species, creating a detailed tree of life for flowering plants. The study sheds light on plant evolution, conservation strategies and sustainable agriculture applications.

SourceThe New York Botanical Garden·JournalNature·TypeData/statistical analysis·DateApr 24, 2024

Understanding the cellular mechanisms of obesity-induced inflammation and metabolic dysfunction

The study reveals that TM4SF19 protein inhibits a pump in lysosomes, impeding macrophage clearance of dead cells. Macrophages lacking TM4SF19 demonstrate enhanced efficacy in clearing dead adipocytes, reducing weight gain and metabolic dysfunction. The findings may open new avenues for treating obesity and related metabolic disorders.

SourcePohang University of Science & Technology (POSTECH)·JournalNature Communications·DateApr 24, 2024

Giant viruses infect deadly parasite

Scientists have isolated giant viruses that infect the deadly human parasite Naegleria fowleri, which causes primary amoebic meningoencephalitis. The newly discovered Naegleiaviruses were found in wastewater treatment plants near Vienna and exhibit a unique stargate structure for DNA entry.

SourceUniversity of Vienna·JournalNature Communications·DateApr 24, 2024

Why can’t robots outrun animals?

An interdisciplinary team of scientists and engineers compared various aspects of running robots with their equivalents in animals, finding that biological components performed poorly compared to fabricated parts. However, animals excel in integrating and controlling these components.

SourceSimon Fraser University·JournalScience Robotics·DateApr 24, 2024

Study finds X’s (formerly Twitter’s) community notes provide accurate, credible answers to vaccine misinformation

A new study published in JAMA found X's Community Notes resulted in hundreds-of-millions of views of accurate and credible COVID-19 vaccine education, suggesting considerable potential for correcting misinformation. The notes typically addressed obvious misinformation, offering corrections from credible sources.

SourceUniversity of California - San Diego·JournalJAMA·TypeObservational study·DateApr 24, 2024

Gene-based therapy restores cellular development and function in brain cells from people with Timothy syndrome

Researchers developed a gene-based therapy that restored typical cellular function in organoids created from cells of people with Timothy syndrome. The treatment used antisense oligonucleotides to decrease the use of mutated exon 8A and increase reliance on non-affected exon 8, restoring normal calcium channel functioning.

UK/German study - COVID-19 vaccine effectiveness and fewer common side-effects most important factors in whether adults choose to get vaccinated

A new UK/German study suggests that perceptions of serious side effects are less than half as important as common side effects, such as fatigue or pain at the injection site, when making a decision to be vaccinated. The study found that educating the public about vaccine safety and efficacy is crucial in boosting vaccination uptake.

Mount Sinai researchers the first to apply single-cell analysis to reveal mechanisms of a common complication of Crohn’s disease

A study by Mount Sinai researchers has identified several pathophysiological mechanisms underlying perianal fistulae in Crohn’s disease. The findings highlight key transcription factor binding events and epigenetic phenomena that contribute to the higher rates of complications in African American patients. The research provides avenues...

Computer game in school made students better at detecting fake news

A study by Uppsala University found that a computer game called Bad News improved students' ability to identify manipulative techniques in social media posts and distinguish reliable from misleading news. The game, played individually or in groups, had positive effects on students' critical thinking skills.

SourceUppsala University·JournalJournal of Research on Technology in Education·TypeObservational study·DateApr 24, 2024

Grey cuckoo, red cuckoo: unveiling the genomic secrets of color polymorphism in female cuckoo birds

A recent study sheds light on the genetic underpinnings behind color polymorphism in adult females of cuckoo birds, revealing a single mutation for female-only polychromatism over 1 million years ago. The study found that variations in gray or rufous coloration are associated with the full length of the female-limited W chromosome.

SourceAdvanced Science Research Center, GC/CUNY·JournalScience Advances·TypeData/statistical analysis·DateApr 24, 2024

Mechanism of grafting Prunus sp. to control crown gall disease by regulating the rhizosphere environment

Grafting onto a disease-resistant rootstock reduces pathogenic Agrobacterium abundance and alters the microbiome composition, enriching beneficial bacteria. The decreased valine in root exudates from grafted plants contributes to decreasing Agrobacterium abundance and suppressing crown gall disease.

SourceNanjing Agricultural University The Academy of Science·JournalHorticulture Research·TypeExperimental study·DateApr 24, 2024

Researchers discover how biomolecules in nature are transformed into complex natural organic matter

A study published in Nature reveals that oxidative dearomatization is the key mechanism behind this transformation, resulting in millions of diverse molecules with stable structures. This process allows the organic matter to persist for long periods, preventing it from rapidly returning to the atmosphere.

Major genetic meta-analysis reveals how antibiotic resistance in babies varies according to mode of birth, prematurity, and where they live

A recent study found that infants born via C-section have more antibiotic-resistant genes, while antibiotic use and prematurity fuel resistance. Infants from Africa had more resistant genes than those from Europe. Probiotics may help reduce the spread of antibiotic resistance in infants by targeting their gut microbiome.

Geologists discover rocks with the oldest evidence yet of Earth’s magnetic field

Researchers have found ancient rocks in Greenland that retain signatures of a magnetic field with a strength of at least 15 microtesla, extending the magnetic field's age by 200 million years. The discovery sheds light on the planet's early conditions and may have played a critical role in making Earth habitable.

SourceMassachusetts Institute of Technology·JournalJournal of Geophysical Research Solid Earth·DateApr 24, 2024

Group of Professor Shupeng Gai from Qingdao Agricultural University discovered the mechanism of PsmiR159b-PsMYB65 module regulating bud dormancy release in tree peony

Researchers from Qingdao Agricultural University have discovered the PsmiR159b-PsMYB65 module regulating bud dormancy release in tree peony. The study found that PsmiR159b inhibits bud dormancy release by targeting PsMYB65, which activates cell cycle genes and promotes bud growth.

SourceNanjing Agricultural University The Academy of Science·JournalHorticulture Research·TypeExperimental study·DateApr 24, 2024