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Science News Archive April 2019 - Page 30


Page 30 of 44

Underwater forests a treasure trove of new drugs

Researchers have identified a common species of seaweed, Laminaria ochroleuca, as a rich source of bacteria with antimicrobial and anticancer activities. The study reveals that extracts from these Actinobacteria inhibited growth of various pathogens and showed selective anticancer activity.

SourceFrontiers·JournalFrontiers in Microbiology·DateApr 9, 2019

A new way of finding compounds that prevent aging

Researchers at Karolinska Institutet developed a new method to identify compounds that prevent aging by analyzing the transcriptome of human cells. This approach identified several candidate substances, including Hsp90 inhibitors, which have been shown to extend lifespan and improve health in C. elegans.

SourceKarolinska Institutet·JournalCell Reports·DateApr 9, 2019

Can flipping coins replace animal experiments?

Researchers Sophie Piper and colleagues used a coin toss to confirm whether a drug protects the brain against stroke, questioning the need for repeated experiments in mice. The study reveals high rates of false positive results and highlights the 'replication crisis' in scientific research.

SourcePLOS·JournalPLOS Biology·DateApr 9, 2019

The anxiety of exposure

Researchers confirmed the theory that impostor syndrome mediates the link between perfectionism and psychological distress. Impostor syndrome arises from maladaptive perfectionism, causing increased anxiety, depressive moods, and other disorders. The study recommends focusing on competence, understanding self-defense mechanisms, mainta...

SourceNational Research University Higher School of Economics·JournalPersonality and Individual Differences·DateApr 9, 2019

Life could be evolving right now on nearest exoplanets

New study models UV environments of nearby exoplanets, finding they could support life despite high radiation levels. The researchers argue that life has survived similar conditions on Earth and suggests the possibility of life existing today on planets like Proxima-b.

SourceCornell University·JournalMonthly Notices of the Royal Astronomical Society·DateApr 9, 2019

High-intensity interval training increases injuries, Rutgers study finds

A Rutgers study found that high-intensity interval training increases injury risk, especially in the knees and shoulders. Most injuries involved knees, ankles, and shoulders, with white males aged 20 to 39 being most injured. The researchers recommend conditioning, proper form, and recovery phases to minimize preventable injuries.

SourceRutgers University·JournalThe Journal of Sports Medicine and Physical Fitness·DateApr 9, 2019

Study reports on bacterial STIs among men using PrEP

The study analyzed data from nearly 3,000 gay and bisexual men in Australia who received daily HIV PrEP, revealing an association between bacterial STIs and specific risk behaviors. The findings suggest that PrEP users are at higher risk of chlamydia, gonorrhea, or syphilis diagnoses.

SourceJAMA Network·JournalJAMA·DateApr 9, 2019

New research about biodiversity reveals the importance of climate on today's abundance of life

A new study maps historical biodiversity in unprecedented detail, showing that a cooler climate is crucial for conserving biodiversity. The researchers also debunk the notion of a brief ice age causing a major extinction event, pointing instead to volcanic activity as the primary cause.

SourceUniversity of Copenhagen - Faculty of Science·JournalProceedings of the National Academy of Sciences·DateApr 9, 2019

New to college? Spend some time alone

A new study finds that first-year students who value and enjoy their alone time tend to display greater psychological health. The researchers argue that a healthy motivation for solitude is essential, particularly for those who don't feel they belong in college.

SourceUniversity of Rochester·JournalMotivation and Emotion·DateApr 9, 2019

Bacteria flip an electric switch to worsen food poisoning

A new study reveals how Salmonella bacteria flip an electric switch within immune cells, causing them to migrate out of the gut and into the bloodstream. This mechanism contributes to the severity of food-borne illnesses, with over 400,000 deaths worldwide each year.

SourcePLOS·JournalPLOS Biology·DateApr 9, 2019

Disposable parts of plants mutate more quickly

A new study published in PLOS Biology found that plant parts with longer lifespans, such as stems and roots, have lower mutation rates compared to those with shorter lifespans, like leaves and petals. The researchers also discovered that plants with more future prospects for mutations tend to have lower relative mutation rates.

SourcePLOS·JournalPLOS Biology·DateApr 9, 2019