Hello LABNAUT readers,
This week we learn about one of the protective mechanisms of dreams, the role of the gut/brain axis in the initiation and spread of Parkinson’s disease and that Nançay’s radiotelescope has confirmed the universality of free fall.
The brain selectively suppresses information from the outside world
This is the new result from scientists at the CNRS and the ENS-PSL in France and Monash University in Australia who have shown that the brain can suppresses information, such as the sound of a conversation, during the sleep phase linked to dreaming. Being able to do this seems to be one of the protective mechanisms of dreams. The study, carried out in collaboration with the Centre du Sommeil et de la Vigilance, Hôtel-Dieu, AP-HP – Université de Paris is reported in Current Biology.
Reference: Sleepers selectively suppress informative inputs during rapid eye movements. Matthieu Koroma, Célia Lacaux, Thomas Andrillon, Guillaume Legendre, Damien Léger and Sid Kouider. Current Biology 10.1016/j.cub.2020.04.047
New insights into the gut-brain axis in Parkinson’s disease
Recent research has shown that Parkinson’s disease may originate in the gut. Indeed, aggregates of the alpha-synuclein protein, which play a key role in the development of the disease, are found in the intestine. A new study by researchers in France and Spain on non-human primates has now revealed that alpha-synuclein-related pathologies can not only be transported from the intestine to the brain, but also from the brain to the intestine. The work opens new perspectives on our understanding of the role of the gut/brain axis in the initiation and spread of Parkinson’s disease, say the researchers.
Reference: Bidirectional gut-to-brain and brain-to-gut propagation of synucleinopathy in non-human primates. Arotcarena ML, Dovero S, Prigent A, Bourdenx M, Camus S, Porras G, Thiolat ML, Tasselli M, Aubert P, Kruse N, Mollenhauer B, Damas IT, Estrada C, Garcia-Carrillo N, Vaikath NN, El-Agnaf OMA, Herrero MT, Vila M, Obeso JA, Derkinderen P, Dehay B, Bezard E. Brain 10.1093
Nançay’s radiotelescope confirms a cornerstone of general relativity
Reference: An improved test of the strong equivalence principle with the pulsar in a triple star system. G. Voisin, I. Cognard, P. C. C. Freire, N. Wex, G. Guillemot, G. Desvignes, M. Kramer, G. Theureau. Astronomy & Astrophysics
QUOTE OF THE WEEK
A nice photo of L’Isle-sur-la-Sorgue taken by a drone.
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