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Reduced SARS-CoV-2 Infection Rates in Lab Workers Conducting Nucleic Acid Testing: Controlling for the Healthy Worker Effect.
J Epidemiol Glob Health
January 2025
Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, No.201-209 Hubinnan Road, Xiamen, 361004, China.
Background: During the COVID-19 outbreak in December 2022 in China, some laboratory workers in SARS-CoV-2 nucleic acid testing (NAT) laboratories remained uninfected.
Objectives: To evaluate if the incidence of SARS-CoV-2 infection was reduced in laboratory workers who performed SARS-CoV-2 NAT, and whether this reduction resulted from the healthy worker effect.
Methods: This retrospective cohort study included 423 laboratory workers from 14 SARS-CoV-2 NAT laboratories in Xiamen, China.
Exploring Divergent Role of Amine in Chemodivergent Synthesis of 4-alkyl/aryl-3H-1,2-Dithiole-3-thione and Ketothioamide.
Chemistry
January 2025
Central University of Gujarat, School of Chemical Sciences, Sector 30, 382030, Gandhinagar, INDIA.
The selective synthesis of 4-alkyl/aryl-3H-1,2-dithiole-3-thione in THF and water-dependent switchable product ketothioamide is demonstrated. The presented method describes explicitly the synthesis of the extremely rare positional isomer 4-alkyl/aryl-3H-1,2-dithiole-3-thione, a unique structure distinct from another positional isomer, 5-alkyl/aryl-3H-1,2-dithiole-3-thione. The unique umpolung of the nitromethyl group is exploited for solvent selective nucleophilic sulfur and amine addition.
View Article and Find Full Text PDFUltra-small curcumin-ruthenium coordination polymer nanodots prevent renal ischemia-reperfusion injury and the progression to chronic kidney disease.
Front Bioeng Biotechnol
January 2025
Department of Urology, Beilun People's Hospital, Ningbo, Zhejiang, China.
Renal ischemia-reperfusion (IR) induces tissue hypoxia, resulting in disrupted energy metabolism and heightened oxidative stress. These factors contribute to tubular cell damage, which is a leading cause of acute kidney injury (AKI) and can progress to chronic kidney disease (CKD). The excessive generation of reactive oxygen species (ROS) plays a crucial role in the pathogenesis of AKI.
View Article and Find Full Text PDFExperimental research on resource utilization of iron tailings powder in backfilling engineering.
Sci Rep
January 2025
Detong Intelligent Technology Co., Ltd, Xuchang, 461000, China.
The goaf formed by mining and other activities is prone to safety hazards. Preparing high-quality and low-cost solidified iron tailings powder (SITP) is an important way to ensure backfill quality and eliminate safety hazards. Using iron tailings powder near the goaf of in Shanxi, comparative experiments were conducted to evaluate the the flowability, stone rate, strength, and water stability of newly mixed SITP under different types and dosages of curing agent, and mixing methods.
View Article and Find Full Text PDFFormulation screening of lyophilized mRNA-lipid nanoparticles.
Int J Pharm
January 2025
Department of Pharmaceutics, Institute of Pharmaceutical Sciences, University of Freiburg, Sonnenstr. 5, Freiburg i. Br. 79104 Germany; ten23 health AG, Mattenstr. 22, Basel 4058 Switzerland. Electronic address:
Lipid nanoparticles (LNPs) have demonstrated their therapeutic potential as safe and effective drug delivery systems for nucleic acids during the COVID-19 pandemic. However, one of the main challenges during technical CMC (Chemistry, Manufacturing, and Controls) development is their long-term stability at temperatures of 2-8 °C or higher, which may be improved by the removal of water by lyophilization. In this study, we identified lyo-/cryo-protectants for freeze-dried mRNA-LNP formulations beyond conventional excipients such as sucrose and trehalose as T-modifiers using polyA as a surrogate.
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