Tag Archives: Sleep Cycles

Science Podcast: Prussian Blue Structures, Extinct Rodents And Quantum Entanglement (Nature)

Nature PodcastsHear the latest from the world of science, brought to you by Nick Howe and Shamini Bundell. This week, uncovering the structure of materials with useful properties, and quantum entanglement over long distances.

In this episode:

00:45 Analysing Prussian blues

Analogues of the paint pigment Prussian blue are used in a variety of chemical processes. Now, researchers have uncovered their atomic structure. Research Article: Simonov et al.News and Views: Ordered absences observed in porous framework materials

08:17 Research Highlights

Teenagers’ natural sleep cycles impact on academic performance, and an extinct, giant rodent with a surprisingly tiny brain. Research Highlight: A teenager’s body clock can ring in school successResearch Highlight: Giant extinct rodent was all brawn and little brain

10:49 Distant entanglement

Researchers have demonstrated quantum entanglement between two points separated by 50 km of fibre optic cables. Research Article: Yu et al.

17:17 News Chat

The latest on the coronavirus outbreak, and gene editing gets an upgrade. News: Coronavirus: latest news on spreading infectionNews: Super-precise CRISPR tool enhanced by enzyme engineering

Studies: Disrupted Sleep Cycles & Dopamine Linked; Craving “High-Calorie Food” & Obesity Are Result

From a NeuroscienceNews.com online release article (01/02/20):

During the years 1976 through 1980, 15% of U.S. adults were obese. Today, about 40%of adults are obese. Another 33% are overweight.

“But, of course, food is now abundant, and our next meal is as close as the kitchen, or the nearest fast-food drive-through, or right here on our desk. Often, these foods are high in fats, sugars, and therefore calories, and that’s why they taste good. It’s easy to overconsume, and, over time, this takes a toll on our health.”

Current Biology Journal Dopamine Signaling and Weight Gain January 2 2020
Dopamine Signaling in the Suprachiasmatic Nucleus Enables Weight Gain Associated with Hedonic Feeding – Current Biology January 2, 2020

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In a study published Thursday in the journal Current Biology, Güler and his colleagues demonstrate that the pleasure center of the brain that produces the chemical dopamine, and the brain’s separate biological clock that regulates daily physiological rhythms, are linked, and that high-calorie foods – which bring pleasure – disrupt normal feeding schedules, resulting in overconsumption. Using mice as study models, the researchers mimicked the 24/7 availability of a high-fat diet, and showed that anytime snacking eventually results in obesity and related health problems.

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