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We're a little crazy, about science!

Archive for July 3, 2015

REM sleep critical for young brain development; medication interferes

REM sleep and dreaming

Rapid eye movement or REM sleep actively converts waking experiences into lasting memories and abilities in young brains reports a new study. The finding broadens the understanding of children’s sleep needs and calls into question the increasing use of REM-disrupting medications such as stimulants and antidepressants.

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Novel DNA repair mechanism brings new horizons

RNA Polymerase

Estimated structure of the nucleosomal DNA loops, which are temporarily formed during transcription of chromatin containing intact DNA by RNA polymerase II (Pol II). In the presence of a single-strand DNA break, the loop structure likely changes, preventing rotation of the RNA polymerase along the DNA helix (orange arrow).
Image credit goes to: Nadezhda S. Gerasimova et al

The DNA molecule is chemically unstable giving rise to DNA lesions of different nature. That is why DNA damage detection, signaling and repair, collectively known as the DNA damage response, are needed. A group of researchers discovered a new mechanism of DNA repair, which opens up new perspectives for the treatment and prevention of neurodegenerative diseases.

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