Comprehensive plasma metabolomics analysis of berberine treatment in ulcerative colitis rats by LC-MS/MS.

Background: Ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) influenced by multiple factors. Berberine, an isoquinoline alkaloid derived from the root and bark of Franch., has shown promise in managing UC, but its underlying mechanisms remain unclear.

Comparative analysis of six aconitine-type alkaloids in decocting extracts between the different processed Fuzi (Aconiti Lateralis Radix praeparata) and its pharmacokinetic behavior in rats by HPLC-MS/MS.

Aconiti Lateralis Radix praeparata (also known as Fuzi in Chinese) has been extensively used in clinic. However, the toxicity issues limit the therapeutic range of Fuzi. Thus, a rapid and sensitive HPLC-MS/MS method was developed to simultaneously quantify and compare six active/toxic constituents in decocting extracts from four different processed Fuzi products and in rat plasma after oral administration of its decocting extracts.

Effects of Cold Rolling on the Microstructure and Corrosion Resistance of the Double-Glow Plasma Ni-Cr Alloying Layer on Q235 Steel.

A Ni-Cr alloyed layer was prepared on the surface of Q235 steel using double-glow plasma surface alloying (DGPSA) technology and the alloyed layer was cold-rolled with different deformation rates. The microstructure, composition distribution and phase composition of the alloyed layer were characterized using a scanning electron microscope (SEM), an energy dispersive spectrometer (EDS), X-ray diffraction (XRD) and an electrochemical workstation. On this basis, the corrosion resistance of the alloyed layer was analyzed.