Associations of nutritional intake and inflammatory factors with sarcopenia in community-dwelling older adults: a cross-sectional study.

Purpose: Sarcopenia is an age-related disease that is related to nutritional intake and chronic low-grade inflammation. The aim of this study was to investigate the association of dietary intake, inflammatory markers and sarcopenia among the community-dwelling older adults.

Methods: A total of 1001 older adults aged 60 and above were recruited.

Protein phosphatase PP2C2 dephosphorylates transcription factor ZAT5 and modulates tomato fruit ripening.

Although C2H2 zinc finger transcription factors are important in plant growth, development, and stress resistance, their specific roles in fruit ripening have been less explored. Here, we demonstrate that the C2H2 zinc finger transcription factor 5 (SlZAT5) regulates fruit ripening in tomato (Solanum lycopersicum L.).

Light-Dependent Chemoselective Amide or Thioamide Ligation of Acylsilanes with Amines using Elemental Sulfur.

Due to the diverse chemical and physical properties of functional groups, mild and controllable ligation methods are often required to construct complex drugs and functional materials. To make diverse sets of products with tunable physicochemical properties, it is also useful to employ complimentary ligation methods that adopt the same starting materials. Here, we disclose the efficient and modular synthesis of amides or thioamides through the chemical ligation of acyl silanes with amines, simply by turning a light on or off.

Late-Stage Stitching Enabled by Palladium-Catalyzed Tryptophan C4 Amination: Peptide Ligation and Cyclodimerization.

Here, we report on methods for late-stage peptide diversification through palladium-catalyzed site-selective C(sp)-H amination of tryptophan residues at the C4 position, utilizing tryptophan-amine cross-links. Our strategy enables practical access to C-N bonds, facilitating the construction of cyclopeptides via late-stage cyclodimerization of structurally complex peptides, which poses significant challenges for organic synthesis. The synthetic utility of this protocol is demonstrated through the synthesis of 30- to 38-membered macrocyclic peptides.