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EU Omnibus proposal increases pesticide risks

1 month 2 weeks ago
Science, Ahead of Print.
Dimitry Wintermantel, Denicia Kassie, Lindsey Hendricks-Franco, Jessica Knapp, Annika Jahnke, Tom D. Breeze, Mark J. F. Brown, Carsten A. Brühl, Justine Dewaele, Manon Fievet, Andreas Focks, Antoine Gekière, Dave Goulson, Gregor Hagedorn, Timo…

Researchers found 8 common food additives linked to high blood pressure and heart disease

1 month 2 weeks ago
A major study of more than 112,000 people found that eating foods containing common preservatives may be linked to a higher risk of high blood pressure and heart-related diseases. Researchers tracked participants for up to eight years and discovered that people consuming the highest amounts of certain preservatives had significantly greater risks of hypertension, heart attack, stroke, and other cardiovascular problems.

Humans may have hidden regenerative powers

1 month 2 weeks ago
Scientists have taken a surprising step toward unlocking regeneration in mammals, showing that the ability to rebuild complex body parts may not be lost after all—it may simply be switched off. Using a two-stage treatment, researchers redirected the body’s normal healing response away from scar formation and toward regrowth, successfully restoring bone, joints, ligaments, and tendons after amputation in animal studies.

Common plastic chemical linked to lifelong anxiety in new study

1 month 2 weeks ago
Exposure to a common plastic chemical before and shortly after birth may have lasting effects on behavior. Researchers found that male rats exposed early in life to DEHP—a plasticizer used in products ranging from medical devices to toys—showed significantly higher anxiety as adults, even long after exposure had ended. The animals were more hesitant to explore open spaces and spent more time frozen in place, classic signs of anxiety in rodents.

iSCORE-PD: an isogenic stem cell collection to research Parkinson's disease

1 month 2 weeks ago
Genome-edited human pluripotent stem cells (hPSCs) provide a powerful platform to study complex diseases such as Parkinson's disease (PD). Here, we describe iSCORE-PD, an isogenic collection of 65 genome-edited hPSC lines carrying disease-causing or high-risk variants in 11 PD-linked genes (SNCA, PRKN, PINK1, DJ1/PARK7, LRRK2, ATP13A2, FBXO7, DNAJC6, SYNJ1, VPS13C, and GBA1). All lines are derived from a well-characterized female hESC line and subjected to extensive quality control. Whole-genome...
Oriol Busquets

Sex-linked helicases DDX3X and DDX3Y regulate G-quadruplex-associated stress in neurons

1 month 2 weeks ago
G-quadruplexes (G4s) are four-stranded nucleic acid structures that regulate virtually all nucleic acid-dependent cellular processes. At present, most functional studies involving G4s have focused on cancer cells. This study investigated how neurons respond to genotoxic stress induced by quarfloxin (CX-3543), a small molecule that stabilizes G4s. We found that quarfloxin treatment induced DNA damage in neurons, with double-strand breaks enriched in the nucleolus. Proteomic analysis revealed that...
Rocio Diaz Escarcega

Sulfonyl-PYBOX/ErCl<sub>3</sub> complex enable highly enantioselective synthesis of α,α-dialkyl and α-alkyl-α-aryl hydrazinonitriles

1 month 2 weeks ago
We report the highly enantioselective nucleophilic addition reaction of simple ketone-derived hydrazones. Accordingly, a ErCl₃-catalyzed cyanation of both aliphatic and aryl ketone hydrazones is achieved for the facile access of C^(α)-tetrasubstituted α-hydrazino nitriles in up to 96% ee, by using the sterically confined pyridinebisoxazoline (PYBOX) ligand featuring a sulfonyl group at the pyridine C4 position. This method enables the shortest catalytic enantioselective total synthesis of...
Yi Gong