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Ultraviolet radiation vs air filtration to mitigate virus laden aerosol in an occupied clinical room.
J Hazard Mater
January 2025
Monash Lung, Sleep, Allergy and Immunology, Monash Health, Melbourne, VIC, Australia; School of Clinical Sciences, Monash University, Melbourne, VIC, Australia; Monash Partners - Epworth, Melbourne, VIC, Australia.
Mitigation measures against infectious aerosols are desperately needed. We aimed to: 1) compare germicidal ultraviolet radiation (GUV) at 254 nm (254-GUV) and 222 nm (222-GUV) with portable high efficiency particulate air (HEPA) filters to inactivate/remove airborne bacteriophage ϕX174, 2) measure the effect of air mixing on the effectiveness of 254-GUV, and 3) determine the relative susceptibility of ϕX174, SARS-CoV-2, and Influenza A(H3N2) to GUV (254 nm, 222 nm). A nebulizer generated ϕX174 laden aerosols in an occupied clinical room (sealed-low flow).
View Article and Find Full Text PDFTousled-like kinase loss confers PARP inhibitor resistance in BRCA1-mutated cancers by impeding non-homologous end joining repair.
Mol Med
January 2025
Research Institute, National Cancer Center, Goyang-Si, Gyeonggi-Do, 10408, Republic of Korea.
Background: Double-strand breaks (DSBs) are primarily repaired through non-homologous end joining (NHEJ) and homologous recombination (HR). Given that DSBs are highly cytotoxic, PARP inhibitors (PARPi), a prominent class of anticancer drugs, are designed to target tumors with HR deficiency (HRD), such as those harboring BRCA mutations. However, many tumor cells acquire resistance to PARPi, often by restoring HR in HRD cells through the inactivation of NHEJ.
View Article and Find Full Text PDFInnovative Ricin Toxin Detection: Unraveling Apurinic/Apyrimidinic Lyase Activity and Developing Fluorescence Sensors.
Anal Chem
January 2025
State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China.
Ricin toxin (RT) is a potential bioterrorism agent because of its high potency, extremely small lethal dose, ease of preparation, and notable stability. Therefore, a portable method is urgently required to efficiently detect and determine the presence of toxicity of RT and evaluate its potency for public health monitoring and counter-bioterrorism responses. Currently, enzyme-based assays for detecting RT mainly focus on its -glycosidase activity.
View Article and Find Full Text PDFThe GlnE protein of Azorhizobium caulinodans ORS571 plays a crucial role in the nodulation process of the legume host Sesbania rostrata.
Microbiol Res
January 2025
National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian 271018, China. Electronic address:
The GlnE enzyme, functioning as an adenylyltransferase/adenylyl-removing enzyme, plays a crucial role in reversible adenylylation of glutamine synthetase (GS), which in turn regulates bacterial nitrogen assimilation. Genomic analysis of Azorhizobium caulinodans ORS571 revealed an open reading frame encoding a GlnE protein, whose function in the free-living and symbiotic states remains to be elucidated. A glnE deletion mutant retained high GS activity even under nitrogen-rich conditions.
View Article and Find Full Text PDFApplication of Ultrasound to Animal-Based Food to Improve Microbial Safety and Processing Efficiency.
Food Sci Anim Resour
January 2025
Division of Animal and Dairy Sciences, Chungnam National University, Daejeon 34134, Korea.
Animal-based foods such as meat, dairy, and eggs contain abundant essential proteins, vitamins, and minerals that are crucial for human nutrition. Therefore, there is a worldwide growing demand for animal-based products. Since animal-based foods are vital resources of nutrients, it is essential to ensure their microbial safety which may not be ensured by traditional food preservation methods.
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