Trinuclear Gold-Catalyzed 1,2-Difunctionalization of Alkenes.

Activated alkyl halides have been extensively explored to generate alkyl radicals with Ru- and Ir- photocatalysts for 1,2-difunctionalization of alkenes, but unactivated alkyl bromides remain challenging substrates due to their strong reduction potential. Here we report a three-component 1,2-difunctionalization reaction of alkenes, unactivated alkyl bromides and nucleophiles (e.g.

Effects of different anesthesia methods on postoperative immune function in patients undergoing gastrointestinal tumor resection.

To investigate the effects of different anesthetic methods on postoperative immune function in patients undergoing gastrointestinal tumor resection. Ninety patients undergoing laparoscopic gastrointestinal tumor resection were divided into 3 groups. Patients in the GA group were anesthetized by total intravenous anesthesia.

Highly selective single and multiple deuteration of unactivated C(sp)-H bonds.

Selective deuteration of unactivated C(sp)-H bonds is a highly attractive but challenging subject of research in pharmaceutical chemistry, material science and synthetic chemistry. Reported herein is a practical, highly selective and economical efficient hydrogen/deuterium (H/D) exchange of unactivated C(sp)-H bonds by synergistic photocatalysis and hydrogen atom transfer (HAT) catalysis. With the easily prepared PMP-substituted amides as nitrogen-centered radical precursors, a wide range of structurally diverse amides can undergo predictable radical H/D exchange smoothly with inexpensive DO as the sole deuterium source, giving rise to the distal tertiary, secondary and primary C(sp)-H bonds selectively deuterated products in yields of up to 99% and excellent D-incorporations.

Vagus Nerve Stimulation Protects Enterocyte Glycocalyx After Hemorrhagic Shock Via the Cholinergic Anti-Inflammatory Pathway.

Introduction: Electrical vagal nerve stimulation is known to decrease gut permeability and alleviate gut injury caused by traumatic hemorrhagic shock. However, the specific mechanism of action remains unclear. Glycocalyx, located on the surface of the intestinal epithelium, is associated with the buildup of the intestinal barrier.

Pneumonia scoring systems for severe COVID-19: which one is better.

Purpose: To investigate the predictive significance of different pneumonia scoring systems in clinical severity and mortality risk of patients with severe novel coronavirus pneumonia.

Materials And Methods: A total of 53 cases of severe novel coronavirus pneumonia were confirmed. The APACHE II, MuLBSTA and CURB-65 scores of different treatment methods were calculated, and the predictive power of each score on clinical respiratory support treatment and mortality risk was compared.

Ketamine effect on HMGB1 and TLR4 expression in rats with acute lung injury.

Acute lung injury (ALI) is a common emergency and severe case in clinic. High mobility group protein box 1 (HMGB1) can be treated as a new anti-inflammatory treatment target. Toll-like receptor 4 (TLR4) is an important receptor of HMGB1.

Effects of promethazine or dexamethasone pretreatment on mivacurium-induced histamine release in children.

Objective: To determine the effects of pretreatment with either promethazine or dexamethasone on mivacurium-induced histamine release in children.

Methods: Eighty ASA I-II children (4-10 years of age) scheduled for tonsillectomy and/or adenoidectomy were randomly divided into 4 groups (n = 20 per group) designated as either the rocuronium, mivacurium, dexamethasone (DXM), or promethazine group. Children in the DXM and promethazine groups were treated separately with intramuscular DXM 0.

Effects of reactive oxygen species scavenger on the protective action of 100% oxygen treatment against sterile inflammation in mice.

Sepsis/multiple organ dysfunction syndrome (MODS) is a major cause of high mortality in the intensive care unit. We have recently reported that 100% oxygen treatment is beneficial to mice with zymosan-induced sterile inflammation by increasing antioxidant enzymatic activities. Yet, the use of hyperoxia is hindered by concerns that it could exacerbate organ injury by increasing free radical formation.

Severity of sepsis is correlated with the elevation of serum high-mobility group box 1 in rats.

Background: Sepsis is a leading cause of death in the intensive care units. The late inflammatory cytokine, high-mobility group box 1 (HMGB1), plays a critical role in sepsis. In the present study, we investigated the association between the serum HMGB1 levels and the severity of organ injury in the lipopolysaccharide-induced sepsis in rats.

100% oxygen inhalation protects against zymosan-induced sterile sepsis in mice: the roles of inflammatory cytokines and antioxidant enzymes.

Sepsis is a leading cause of death in patients with critical illness. However, there is no effective therapy available. Recent studies have suggested that ventilation with 100% oxygen (Oxy) can improve the survival rate and organ function in several shock models.