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Predictive value of enhanced corneal biomechanical parameters for ectasia progression.
Jpn J Ophthalmol
January 2025
Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Purpose: To determine whether corneal biomechanical parameters can predict ectasia progression.
Study Design: Retrospective observational study.
Methods: The baseline corneal biomechanical parameters of 64 eyes of 41 young patients (age, < 25 years at the first visit) who were diagnosed with keratoconus (KC) or suspected KC at Osaka University Hospital and followed up for more than two years were reviewed.
Dynamic Light Scattering Analysis of Lipid Nanoparticles: Effect of Salts on the Diffusion Interaction Parameter and Hydrodynamic Radius at Infinite Dilution.
Anal Chem
January 2025
School of Chemical Engineering, The University of Adelaide, North Terrace, Adelaide 5005, Australia.
The rise in the popularity of lipid nanoparticle (LNP)-based formulations necessitates the need for screening tools to quickly predict their colloidal stability in the presence of common excipients. Protein chemists have employed the diffusion interaction parameter () determined using dynamic light scattering as an indicator of formulation stability, yet this approach has not been applied to particulate systems. Herein, measurements of LNPs revealed behavior dissimilar to that of proteins.
View Article and Find Full Text PDFOnline integration of capillary electrophoresis and dual detector Taylor dispersion analysis a 3D printed instrument.
Analyst
January 2025
Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, NM, 88003-001, USA.
Hydrodynamic radius () is a descriptive metric of protein structure with the potential to impact drug development, disease diagnosis, and other important research areas of molecular biology. Common instrumental methods for molecular size characterization are disadvantageous due to high sample consumption, measurements made in non-physiological conditions, and/or inaccurate size determinations. Capillary Taylor dispersion analysis (TDA) is a molecular sizing method that utilizes nL sample volumes and achieves absolute size determination without calibration or comparison to standards.
View Article and Find Full Text PDFSelf-Diffusion of Star and Linear Polyelectrolytes in Salt-Free and Salt Solutions.
Macromolecules
January 2025
Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, United States.
This work explored solution properties of linear and star poly(methacrylic acids) with four, six, and eight arms (PMAA, 4PMAA, PMAA, and 8PMAA, respectively) of matched molecular weights in a wide range of pH, salt, and polymer concentrations. Experimental measurements of self-diffusion were performed by fluorescence correlation spectroscopy (FCS), and the results were interpreted using the scaling theory of polyelectrolyte solutions. While all PMAAs were pH sensitive and showed an increase in hydrodynamic radius ( ) with pH in the dilute regime, the of star polymers (measured at basic pH values) was significantly smaller for the star polyacids due to their more compact structure.
View Article and Find Full Text PDFThe relationship between soong classification and fracture characteristics with implant removal for distal radius fractures: a comparative study of 795 cases.
Orthop Traumatol Surg Res
January 2025
Ankara University Faculty of Medicine, Orthopaedics and Traumatology Department, Hand Surgery Unit, Ankara, Turkey.
Introduction: Although there is no consensus in the literature, it is believed that the Soong classification system and fracture pattern are risk factors for plate removal in distal radius fractures.
Hypothesis: The aim of this large-scale study was to evaluate the relationship between Soong classification, fracture pattern, and implant removal in distal radius fractures.
Materials And Methods: We retrospectively evaluated 795 patients who underwent surgery using a volar locking plate for distal radius fractures at our clinic between 2005 and 2022.
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