Synergistic effect of ligand-cluster structure and support in gold nanocluster catalysts for selective hydrogenation of alkynes.

In the field of nanocluster catalysis, it is crucial to understand the interplay of different parameters, such as ligands, support and pretreatment and their effect on the catalytic process. In this study, we chose the selective hydrogenation of phenylacetylene as a model reaction and employed two gold nanoclusters as catalysts, the phosphine protected Au and the thiolate protected Au, each with different binding motifs. They were supported on MgO, AlO and a hydrotalcite (HT), chosen for their different acidity.

Fatty Acids of European Sardine () White Muscle Can Discriminate Geographic Origin Along the Iberian Atlantic Coast.

The European sardine () ranks among the most valuable species of Iberian fisheries, and the accurate tracing of its geographic origin, once landed, is paramount to securing sustainable management of fishing stocks and discouraging fraudulent practices of illegal, unreported, and unregulated (IUU) fishing. The present study investigated the potential use of white muscle fatty acids (FAs) to successfully discriminate the geographic origin of samples obtained in seven commercially important fishing harbors along the Iberian Atlantic Coast. While 35 FAs were identified using gas chromatography-mass spectrometry in the white muscle of , the following, as determined by the Boruta algorithm, were key for sample discrimination: 14:0, 22:6-3, 22:5-3, 18:0, 20:5-3, 16:1-7, 16:0, and 18:1-7 (in increasing order of relevance).

Gut microbes modulate the effects of the flavonoid quercetin on atherosclerosis.

Gut bacterial metabolism of dietary flavonoids results in the production of a variety of phenolic acids, whose contributions to health remain poorly understood. Here, we show that supplementation with the commonly consumed flavonoid quercetin impacted gut microbiome composition and resulted in a significant reduction in atherosclerosis burden in conventionally raised (ConvR) Apolipoprotein E (ApoE) knockout (KO) mice but not in germ-free (GF) ApoE KO mice. Metabolomic analysis revealed that consumption of quercetin significantly increased plasma levels of benzoylglutamic acid, 3,4 dihydroxybenzoic acid (3,4-DHBA) and its sulfate-conjugated form in ConvR mice, but not in GF mice supplemented with the flavonoid.

Metalloproteases and their inhibitors in the postpartum endometrial remodeling in dairy cows: their relationship with days to conception after parturition.

In dairy herds, it is expected that cows will be cycling and the uterus will be ready for a new conception before the fourth week postpartum. However, an alteration in the endometrial remodeling can delay conception, increasing the parturition-to-conception interval, and consequently decreasing the reproductive performance. The endometrial matrix has a relevant participation in the processes of postpartum uterine remodeling.

The alphavirus determinants of intercellular long extension formation.

The alphavirus chikungunya virus (CHIKV) is a serious human pathogen that can cause large-scale epidemics characterized by fever and joint pain and often resulting in chronic arthritis. Infection by alphaviruses including CHIKV and the closely related Semliki Forest virus (SFV) can induce the formation of filopodia-like intercellular long extensions (ILEs). ILEs emanate from an infected cell, stably attach to a neighboring cell, and mediate cell-to-cell viral transmission that is resistant to neutralizing antibodies.