Background/aims: To investigate the effect of hepatic blood inflow occlusion without hemihepatic artery control on the apoptosis of liver cells during ischemia-reperfusion injury in rats.
Methodology: Animal models of three hepatic vascular occlusion methods were established. Hepatic blood inflow occlusion without hemihepatic artery control (WH group), hemihepatic vascular occlusion (HH group) and Pringle maneuver (PR group) were compared.
Results: At each time point after reperfusion, ALT, AST, and apoptosis rates were significantly higher in the PR group than in the HH group or the WH group (p < 0.01), and the pathology and hepatocyte ultrastructure at 6 hours after reperfusion were significantly worse in the PR group than in the HH group or the WH group (p < 0.01). ALT, AST, apoptosis rate, pathology and hepatocyte ultrastructure at 6 hours after reperfusion were not significantly different between the WH group and the HH group (p > 0.05).
Conclusion: Hepatic blood inflow occlusion without hemihepatic artery control can reduce hepatic ischemia-reperfusion injury, and the effect is similar to that of hemihepatic vascular occlusion.
Download full-text PDF |
Source |
---|
Ned Tijdschr Geneeskd
January 2025
Amsterdam UMC, locatie VUmc, afd. Medische Oncologie en Interne Geneeskunde, Amsterdam.
Some older patients with suspected malignancy are not automatically eligible for a standard care process due to frailty or limited treatment wishes. For this group we recommend a personalized approach in which frailty is identified and the patient's wishes are central. To achieve appropriate care, cooperation and timely consultation between primary care or elderly care with a geriatric and/or oncological specialist from secondary care is important.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
The use of proteins as intracellular probes and therapeutic tools is often limited by poor intracellular delivery. One approach to enabling intracellular protein delivery is to transform proteins into spherical nucleic acid (proSNA) nanoconstructs, with surfaces chemically modified with a dense shell of radially oriented DNA that can engage with cell-surface receptors that facilitate endocytosis. However, proteins often have a limited number of available reactive surface residues for DNA conjugation such that the extent of DNA loading and cellular uptake is restricted.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, CH-1015 Lausanne, Switzerland.
In the dyotropic rearrangement of molecules with semiflexible structures, characterized by a freely rotating static C-C bond, the formation of a mixture of products is common due to the coexistence of several energetically comparable conformers. Herein, we report that it is possible to modulate the shifting groups by adjusting the metal's coordination sphere in Pd-based dyotropic rearrangement. In the presence of a catalytic amount of Pd(II) salt, the reaction of γ-hydroxyalkenes or γ,δ-dihydroxyalkenes with Selectfluor affords fluorinated tetrahydropyranols or 6,8-dioxabicyclo[3.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States.
The development of catalytic methods for the synthesis of enantiopure saturated heterocycles has been a long-standing challenge in asymmetric catalysis. We describe the first highly enantioselective palladium-catalyzed βC(sp)-H arylation and olefination of lactams for the preparation of various chiral N-heterocycles bearing quaternary carbon centers. The presence of strongly electron-withdrawing groups on the chiral bifunctional MPAThio ligand is crucial to the reactivity of weakly coordinating lactams.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Institute of Organic Chemistry, University of Leipzig, 04103 Leipzig, Germany.
The enantioselective synthesis of 1,4-dicarbonyl compounds continues to pose a significant challenge in organic synthesis, and a catalytic process which generates two adjacent stereogenic centers with full stereochemical control is lacking until now. The 1,4-relationship of the functional groups requires an Umpolung strategy as one of the α-carbonyl positions has to be inverted into an electrophilic center to react with a normal enolate. We report herein the highly enantio- and diastereoselective addition of silyl ketene acetals toward electrophilic 1-azaallyl cations to furnish chiral 4-hydrazonoesters, which are masked 1,4-dicarbonyl compounds.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!