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Mechanistic study of micropollutants rejection by nanofiltration of a natural water.
Environ Technol
December 2024
Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes, France.
A natural water sampled after a sand filtration step and spiked with four organic micropollutants (metolachlor ESA, metolachlor NOA, desethylatrazine and metaldehyde) was treated by a loose nanofiltration membrane. The Steric, Electric, and Dielectric model (SEDE model) was then used to predict the separation performance of the membrane towards the various ions and micropollutants in the water matrix in order to study the transport mechanism of ions and micropollutants through the membrane. The SEDE model was found to satisfactorily predict the rejection sequences of inorganic anions and cations, as well as neutral (desethylatrazine and metaldehyde) and charged (metolachlor ESA and metolachlor NOA) micropollutants.
View Article and Find Full Text PDFInfluence of the Microbial Metabolite Acetyl Phosphate on Mitochondrial Functions Under Conditions of Exogenous Acetylation and Alkalization.
Metabolites
December 2024
Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya St., 3, Pushchino 142290, Russia.
Background: Acetyl phosphate (AcP) is a microbial intermediate involved in the central bacterial metabolism. In bacteria, it also functions as a donor of acetyl and phosphoryl groups in the nonenzymatic protein acetylation and signal transduction. In host, AcP was detected as an intermediate of the pyruvate dehydrogenase complex, and its appearance in the blood was considered as an indication of mitochondrial breakdown.
View Article and Find Full Text PDFPolar Networks Mediate Ion Conduction of the SARS-CoV-2 Envelope Protein.
J Am Chem Soc
December 2024
Department of Chemistry, Massachusetts Institute of Technology, 170 Albany Street, Cambridge, Massachusetts 02139, United States.
The SARS-CoV-2 E protein conducts cations across the cell membrane to cause pathogenicity to infected cells. The high-resolution structures of the E transmembrane domain (ETM) in the closed state at neutral pH and in the open state at acidic pH have been determined. However, the ion conduction mechanism remains elusive.
View Article and Find Full Text PDFNanomaterials effectively alleviate cadmium hazards in soil-plant systems: A meta-analysis.
Sci Total Environ
December 2024
School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China; School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:
Soil cadmium (Cd) contamination is a non-negligible global environmental issue as it may threaten food security and human health through soil-plant interactions. Nanomaterials have a great potential to decrease Cd bioavailability and bioaccumulation, even though the effects have been inconsistent among various studies. Here we compiled data from 137 experiments on the remediation of Cd-contaminated soils by nanomaterials.
View Article and Find Full Text PDFThe impact of surface charge on the interaction of cholesterol-free fusogenic liposomes with planktonic microbial cells and biofilms.
Int J Pharm
December 2024
Department of Life Sciences and Health, Oslo Metropolitan University (OsloMet), Oslo, Norway.
This study focused on the development of cholesterol-free fusogenic liposomes with different surface charge with the aim of improving biofilm penetration. In vitro assessments of the liposomes included physical stability, biocompatibility, fusion with microbial cells, and the ability to penetrate established biofilms. Using dynamic light scattering, cholesterol-free, fusogenic liposomes were found to be < 200 nm in size with small size distribution (PDI < 0.
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