Short term GABA antagonist treatment improves long term sleep quality, memory, and decision-making in a Down syndrome mouse model.

Down syndrome (DS) is a common genetic condition affecting people worldwide. It involves cognitive disabilities for which there are no drug therapies. The Ts65Dn mouse model of DS shows cognitive impairment due to a reduction in neuron number and connectivity as well as excessive neuronal activity, as GABA antagonist treatment restores memory in these mice.

The protein structurome of Orthornavirae and its dark matter.

Unlabelled: Metatranscriptomics is uncovering more and more diverse families of viruses with RNA genomes comprising the viral kingdom Orthornavirae in the realm Riboviria. Thorough protein annotation and comparison are essential to get insights into the functions of viral proteins and virus evolution. In addition to sequence- and hmm profile‑based methods, protein structure comparison adds a powerful tool to uncover protein functions and relationships.

()-2-Benzylidenecyclanones: Part XX-Reaction of Cyclic Chalcone Analogs with Cellular Thiols: Unexpected Increased Reactivity of 4-Chromanone- Compared to 1-Tetralone Analogs in Thia-Michael Reactions.

In vitro relative cytotoxicity (IC ()/IC () of ()-3-(4'-methylbenzylidene)-4-chromanone () towards human Molt 4/C8 and CEM T-lymphocytes showed a >50-fold increase in comparison to those of the respective tetralone derivative (). On the other hand, such an increase was not observed in the analogous 4-OCH ( and ) derivatives. In order to study whether thiol reactivity-as a possible basis of the mechanism of action-correlates with the observed cytotoxicities, the kinetics of the non-enzyme catalyzed reactions with reduced glutathione (GSH) and N-acetylcysteine (NAC) of and were investigated.

Catalog of the Ulidiidae (Diptera: Tephritoidea) of Chile.

A catalog of Ulidiidae, picture-winged flies, from Chile is provided. Included are all valid names and synonyms for the 16 species and nine genera known from Chile, including information about name, author, year of publication, page number, type species, type locality, and references. Euxesta Loew is the more species richness genus in Chile, with five species, followed by Ceroxys Macquart, with two species.