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Science News for December 26, 2017


Neuroscientists shed light on causes of postpartum depression using new research model

Researchers at Tufts University have developed a novel preclinical model of postpartum depression, showing the involvement of the HPA axis and specific protein KCC2 in inducing disorder. The study provides empirical evidence that dysregulation of the HPA axis and KCC2 can lead to behaviors mimicking postpartum depression.

SourceTufts University, Health Sciences Campus·JournalPsychoneuroendocrinology·DateDec 26, 2017

Scientists should be super modelers

A Michigan State University student examines the impact of grain size and niche breadth on species distribution modeling, finding that relying solely on expert opinions can lead to inaccurate predictions. The research aims to promote more extensive testing and data-driven approaches in conservation.

SourceMichigan State University·JournalEcography·DateDec 26, 2017

Understanding the molecular mechanisms of ALS

Researchers at Hokkaido University have shed light on the molecular mechanisms behind ALS by studying the depletion of protein TDP-43. The study found that TDP-43 binds to U6 snRNA, stabilizing it, which leads to its degradation and eventual cell death. This discovery may lead to ways to slow or stop neuronal cell death in ALS patients.

SourceHokkaido University·JournalPLOS ONE·DateDec 26, 2017

Are childhood blood lead levels associated with criminal behavior?

A recent study from New Zealand found no consistent association between childhood lead exposure and adult criminal behavior, challenging previous research on the topic. Despite well-documented effects of lead on brain development, researchers did not detect a dose-response relationship between higher childhood blood levels and increase...

SourceJAMA Network·JournalJAMA Pediatrics·DateDec 26, 2017

Social interactions override genetics when birds learn new songs

Researchers found that young male songbirds can overcome their genetic predisposition to sing like their fathers with enriched early experience. The study used Bengalese finches and found that exposure to a computerized tutor or live adult males reduced the genetic contribution to complex behaviors like birdsong.

SourceUniversity of California - San Francisco·JournalProceedings of the National Academy of Sciences·DateDec 26, 2017