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Science News Archive February 2023 - Page 24


Page 24 of 36

Veterinary: Non-processed meat-based early diet reduces risk of dog digestive issues later in life

Research published in Scientific Reports found that dogs fed non-processed meat-based diets and human leftovers during puppyhood and adolescence were less likely to experience gastrointestinal disorders later in life. This suggests that providing puppies with a variety of whole foods early on may reduce the risk of future digestive iss...

SourceScientific Reports·JournalScientific Reports·DateFeb 9, 2023

How hepatitis E viruses enter cells

A study published in Hepatology reveals that the EGFR protein plays a crucial role in the entry mechanism of hepatitis E virus into human hepatocytes. The researchers found that suppressing the activity of the EGFR protein significantly reduced cell infections, suggesting potential therapeutic applications for approved cancer drugs.

SourceRuhr-University Bochum·JournalHepatology·TypeExperimental study·DateFeb 9, 2023

USC Dornsife study shows California counties overseen by a coroner who is also sheriff underreport officer-involved deaths

A new USC Dornsife study comparing national law enforcement databases with the Fatal Encounters open-source database found significant discrepancies in reporting of officer-involved deaths. In California counties where sheriffs also serve as coroners, these incidents are underreported more often than in separate agencies.

SourceUniversity of Southern California·JournalAcademic Forensic Pathology·TypeData/statistical analysis·DateFeb 9, 2023

'To save our pets, we need to know our neighbors' Lessons from an urban firestorm

A CU Boulder study estimates that 1,182 animals were affected by the Marshall Fire, with most being fatally injured due to rapid-onset disasters and poor emergency notification systems. Researchers emphasize the need for pet owners to create evacuation plans and designate trusted contacts to help rescue pets in case of an emergency.

SourceUniversity of Colorado at Boulder·JournalAnimals·TypeSurvey·DateFeb 9, 2023

Bite this! Mosquito feeding chamber uses fake skin, real blood

Rice University researchers have developed an innovative system to study mosquito feeding behavior using fake skin made with a 3D printer, eliminating the need for live volunteers. The system was tested on various mosquito repellents and showed promising results, suggesting it could be scaled up for future studies.

SourceRice University·JournalFrontiers in Bioengineering and Biotechnology·TypeExperimental study·DateFeb 9, 2023

Gene cluster reshuffling drives natural sunscreen evolution in lichens

Lichen-forming fungi have evolved unique gene clusters to produce orange 'sunscreen' pigments, allowing them to thrive in sunny environments. The discovery of a critical ABC transporter gene within the pigment gene cluster provides a potential hypothesis for toxicity avoidance in these organisms.

SourceSMBE Journals (Molecular Biology and Evolution and Genome Biology and Evolution)·JournalGenome Biology and Evolution·TypeExperimental study·DateFeb 9, 2023

Possible genetic basis and mouse model found for severe nonalcoholic fatty liver disease

A mutant SRSF1 gene may cause severe nonalcoholic fatty liver disease (NASH), researchers have found. Mice lacking the gene develop all three hallmarks of NASH: excess fat, inflammation, and scarring in the liver. The study suggests that DNA damage in liver cells triggers this pathology, highlighting the need to protect the genome.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalNature Communications·TypeExperimental study·DateFeb 9, 2023

How giants became dwarfs

The cichlid fish species Lamprologous callipterus has a unique reproductive system where males are 12 times bigger than females, but also has a smaller male morph that is 60 times smaller. A new study found that the genetic mechanism underlying this size-determining sex chromosome is linked to the growth hormone regulator gene GHRHR.

SourceUniversity of Bern·JournalMolecular Ecology·DateFeb 9, 2023

Can clay capture carbon dioxide?

Researchers are exploring how a kind of clay can soak up carbon dioxide and store it, potentially reducing the impact of climate change. The study found that carbon dioxide is more stable in wet clay nanopores than in plain water.

SourceDOE/Sandia National Laboratories·JournalThe Journal of Physical Chemistry Letters·TypeComputational simulation/modeling·DateFeb 9, 2023

ChatGPT can (almost) pass the US Medical Licensing Exam

A study published in PLOS Digital Health found that ChatGPT scored between 52.4% and 75.0% on the USMLE exams, exceeding the passing threshold of approximately 60%. The model demonstrated high concordance rates and produced significant insights for most responses.

SourcePLOS·JournalPLOS Digital Health·TypeExperimental study·DateFeb 9, 2023

Mission to beat rare cancers

Researchers at Helmholtz-Zentrum Dresden-Rossendorf developed a new strategy to increase target molecules for radionuclide therapy in pheochromocytoma tumors, delaying tumor growth. The combination of valproic acid and decitabine prior to therapy doubled the radiation dose absorbed by the tumor.

SourceHelmholtz-Zentrum Dresden-Rossendorf·JournalTheranostics·TypeExperimental study·DateFeb 9, 2023

How to really reach students with online teaching

A recent study at Ruhr-University Bochum found that interactive online teaching can increase students' physiological state of arousal compared to passive online or face-to-face teaching. Students in interactive online classes reported feeling more involved and attentive but also experienced increased anxiety.

SourceRuhr-University Bochum·JournalAnnals of Anatomy - Anatomischer Anzeiger·DateFeb 9, 2023

WVU researchers estimate cost of ‘injury deaths of despair,’ including suicide, exceeds $1 trillion annually in the U.S.

The study found that estimated national costs of self-injury mortality rose by 143% from $0.46 trillion to $1.12 trillion over a 20-year period, primarily driven by increases in opioid and alcohol-related deaths. West Virginia has the highest per capita cost at $6,534, with total suicide costs increasing 58% to $502.7 billion.

SourceWest Virginia University·JournalBMC Public Health·DateFeb 9, 2023

Mushrooms magnify memory by boosting nerve growth

Researchers from The University of Queensland have identified new active compounds in Hericium erinaceus that promote neuron projections, extending and connecting to other neurons. This discovery could lead to treatments and protection against neurodegenerative cognitive disorders such as Alzheimer's disease.

SourceUniversity of Queensland·JournalJournal of Neurochemistry·TypeExperimental study·DateFeb 9, 2023

New synthetic skin may unlock blood-sucking secrets of mosquitoes

Researchers have developed a new synthetic skin, made of hydrogels, to study how mosquitoes transmit deadly diseases. The hydrogel system can mimic different blood vessel patterns, allowing for more consistent testing and analysis. This breakthrough may help identify ways to prevent the spread of disease.

SourceTulane University·JournalFrontiers in Bioengineering and Biotechnology·TypeExperimental study·DateFeb 9, 2023

New research finds that people who use cannabis early in pregnancy are at increased risk of poor pregnancy outcomes

Research suggests that using cannabis in the first six to 14 weeks of pregnancy is associated with poor fetal growth and an increased risk of developing high blood pressure during pregnancy. The study analyzed urine samples from over 9,200 participants and found a significant link between cannabis use and adverse placental function.

Well-preserved fossil assemblage suggests marine ecosystem recovery after the “great dying” happened rapidly

A well-preserved fossil assemblage from China reveals a rapid recovery of the marine ecosystem after the Permian-Triassic mass extinction. The Guiyang Biota provides an unprecedented snapshot of a highly diversified marine ecosystem only one million years after the extinction event, forcing scientists to rethink their interpretations.

Packaged DNA: MLU researchers develop new method to promote bone growth

Researchers at MLU and partners developed a new process coating implant materials with a gene-activated biomaterial that induces stem cells to produce bone tissue. This method, published in Advanced Healthcare Materials, stimulates bone healing in a targeted manner with fewer side effects than existing methods.

SourceMartin-Luther-Universität Halle-Wittenberg·JournalAdvanced Healthcare Materials·TypeExperimental study·DateFeb 9, 2023

Researchers link 27 genetic variants to ADHD

A large international study has identified 27 genetic variants that increase the risk of ADHD, more than twice as many as previous studies. The study found that these variants affect genes involved in brain development and dopamine regulation.

SourceAarhus University·JournalNature Genetics·TypeExperimental study·DateFeb 9, 2023

Care for those who have a miscarriage may be compromised in states that restrict abortion, study finds

A study led by University at Buffalo physician Elana Tal found that people in states with restrictive abortion policies are less likely to receive optimal care after a miscarriage. The researchers found disparities in the management of early pregnancy loss, including lower rates of uterine aspiration and mifepristone prescription.

SourceUniversity at Buffalo·JournalWomen s Health Issues·TypeSurvey·DateFeb 9, 2023

Remote symptom reporting systems for patients may reduce outpatient waiting lists

A new review suggests that remote symptom reporting systems can significantly reduce outpatient waiting lists by enabling patients to monitor and report their symptoms digitally. This allows clinicians to make informed decisions in near real-time, reducing the need for unnecessary clinic appointments.

SourceSAGE·JournalJournal of the Royal Society of Medicine·TypeData/statistical analysis·DateFeb 9, 2023

Salt cuts off the energy supply to immune regulators

A new study found that excessive salt intake disrupts the energy metabolism of regulatory T cells, leading to dysfunction. This may have implications for autoimmune and cardiovascular diseases. The research suggests that sodium can alter gene expression and trigger malfunctions in mitochondrial energy generation.

SourceMax Delbrück Center for Molecular Medicine in the Helmholtz Association·JournalCell Metabolism·TypeExperimental study·DateFeb 9, 2023

Doubling protected lands for biodiversity could require tradeoffs with other land uses, study finds

A recent study suggests that doubling protected lands for biodiversity could lead to substantial regional shifts in land use and potentially fail to protect world's most biodiverse hotspots. The research also found that the land used for growing crops for biofuels could be significantly impacted by the doubling of current protected areas.