The study of the effect of synthetic polyelectrolites of the cationic type on benzylpenicillin resistant staphylococci showed that the cation polyelectrolites induced changes in the cell membrane permeability and increased penicillin absorption by the cells thus increasing sensitivity of the penicillin-resistant staphylococci to the antibiotic. Low inhibitory effect of the polyelectrolites with respect to penicillinase and hyaluronidase was shown. Changes in the membrane apparatus of staphylococcus cells due to the effect of polyelectrolites were found.
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Inorg Chem
January 2025
CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS 5026, F-33600 Pessac ,France.
The diaspore-type crystalline structure is historically well-known in mineralogy, but it has also been widely studied for various applications in the field of catalysis, electrocatalysis, and batteries. However, once two anions of similar ionic size but different electronegativity, such as F and O or more precisely OH, are combined, the knowledge of the location of these two anions is of paramount importance to understand the chemical properties in relation with the generation of hydrogen bonds. Coprecipitation and hydrothermal routes were used to prepare hydroxide-fluorides that crystallize all in an orthorhombic structure with four formula units per cell.
View Article and Find Full Text PDFJ Phys Chem B
January 2025
Chemical Sciences Department, Homi Bhabha National Institute, Mumbai 400094, India.
This study delves into the interplay of temperature, composition, tortuosity, and electrostatic interactions on ion diffusion within cation exchange membranes. It explores the temperature dependence (16-60 °C) of the self-diffusion coefficients (SDCs) of Ba and Eu ions within the Nafion 117 cation exchange membrane, particularly in the presence of Na ions. Radiotracer techniques and electrochemical impedance spectroscopy were employed to investigate these SDCs.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Nanjing University, College of Engineering and Applied Sciences, No. 163 Xianlin Avenue, Qixia District, Nanjing, Nanjing, CHINA.
Electrolyte engineering has emerged as an effective strategy for stabilizing Zn-metal anodes. However, a single solute or solvent additive is far from sufficient to meet the requirements for electrolyte cycling stability. Here, we report a new-type high-entropy electrolyte composed of equal molar amounts of Zn(OTf)2 and LiOTf, along with equal volumes of H2O, triethyl phosphate, and dimethyl sulfoxide, which enhances electrolyte stability by increasing solvation entropy.
View Article and Find Full Text PDFJ Pain
January 2025
Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112; Alcohol and Drug of Abuse Center of Excellence, LSUHSC, New Orleans, LA; Neuroscience Center of Excellence, Louisiana State University Health Science Center, New Orleans, LA 70112; Southeast Louisiana VA Healthcare System, New Orleans, LA.
Millions of Americans live with chronic inflammatory pain conditions, and the prevalence of these conditions increases with age and is higher in females. Still, it is poorly understood how sex, age and peripheral gene expression affect the trajectory of chronic inflammatory pain conditions. We used the inflammatory agent, Complete Freund's Adjuvant (CFA), to systematically test sex and age effects on mechanical and thermal sensitivity in adolescent and adult male and female Wistar rats over 3 weeks (Experiment 1 [onset]) or 11 weeks (Experiment 2 [recovery]).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!