Tag Archives: circadian rhythm

Woran forscht Alexander Gerst auf der Internationalen Raumstation ISS?

Wie können Turbinenschaufeln noch leichter und gleichzeitig stabiler werden? Kann ein elektrischer Leiter ein Magnetfeld aufbauen, das Raumschiffe vor dem Sonnenwind schützt? Was können wir aus den physiologischen Veränderungen, die die Astronauten im Weltraum erfahren, für den Menschen auf der Erde lernen? Diesen und weiteren spannenden Fragen will der deutsche ESA-Astronaut Alexander Gerst an Bord der Internationalen Raumstation ISS während seiner Mission “Blue Dot” auf den Grund gehen. Unter dem Motto “Shaping the future – Zukunft gestalten” wird der 38 Jahre alte Geophysiker zwischen seinem Start am 28. Mai und seiner Landung am 11. November 2014 circa 100 Experimente durchführen. 35 Experimente kommen aus Europa – die meisten davon aus deutschen Forschungseinrichtungen wie dem Deutschen Zentrum für Luft- und Raumfahrt (DLR). (more…)

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More Sophisticated Wiring, Not Just a Bigger Brain, Helped Humans Evolve Beyond Chimps

Human and chimp brains look anatomically similar because both evolved from the same ancestor millions of years ago. But where does the chimp brain end and the human brain begin?

A new UCLA study pinpoints uniquely human patterns of gene activity in the brain that could shed light on how we evolved differently than our closest relative. The identification of these genes could improve understanding of human brain diseases like autism and schizophrenia, as well as learning disorders and addictions.

The research appears Aug. 22 in the advance online edition of the journal Neuron. (more…)

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Depression Linked to Altered Activity of Circadian Rhythm Gene

COLUMBUS, Ohio – Depression appears to be associated with a molecular-level disturbance in the body’s 24-hour clock, new research suggests. 

Scientists examined genes that regulate circadian rhythm in people with and without a history of depression. As a group, those with a history of depression had a higher level of activity of the so-called Clock gene, which has a role in regulating circadian rhythm, than did people with no mood disorders.

Higher expression levels of this gene suggest something is amiss in the body’s 24-hour biological and behavioral cycle, which could affect sleep patterns and other physiological functions governed by circadian rhythm. Sleep disturbance is a common symptom of depression.  (more…)

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