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Lysophosphatidylinositol (LPI) is an endogenous signaling molecule for the GPR55 receptor. Previous studies have shown that arachidonoyl-lysophosphatidylinositol (LPI-20:4) produced an increase in the inflammatory mediators NLPR3 (inflammasome - 3 marker) and IL-1b in neurons from both rat dorsal root ganglion (DRG) and hippocampal cultures. Because LPI is comprised of a family of lipid structures that vary in fatty acyl composition, the current work examined neuroinflammatory responses to various LPI structures in DRG and hippocampal cultures as assessed by high content fluorescent imaging.
View Article and Find Full Text PDFCerebral Microbleeds and Amyloid Pathology Estimates From the Amyloid Biomarker Study.
JAMA Netw Open
January 2025
Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands.
Importance: Baseline cerebral microbleeds (CMBs) and APOE ε4 allele copy number are important risk factors for amyloid-related imaging abnormalities in patients with Alzheimer disease (AD) receiving therapies to lower amyloid-β plaque levels.
Objective: To provide prevalence estimates of any, no more than 4, or fewer than 2 CMBs in association with amyloid status, APOE ε4 copy number, and age.
Design, Setting, And Participants: This cross-sectional study used data included in the Amyloid Biomarker Study data pooling initiative (January 1, 2012, to the present [data collection is ongoing]).
Amyloid-related changes in fluency in patients with subjective cognitive decline.
Alzheimers Dement (Amst)
January 2025
Alzheimer Center Amsterdam, Neurology Amsterdam University Medical Center Amsterdam the Netherlands.
Introduction: We examined semantic and phonemic fluency in individuals with subjective cognitive decline (SCD) in relation to amyloid status and clinical progression.
Methods: A total of 490 individuals with SCD (62 ± 8 years, 42% female, 28% amyloid-positive, 17% clinical progression) completed annual fluency assessments (mean ± SD follow-up 4.3 ± 2.
Microwave-synthesized NiZrO@GNP and NiZrO3@MWCNT nanocomposites: enhanced antimicrobial efficacy against biofilms and .
3 Biotech
February 2025
Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai, Tamil Nadu 600034 India.
Unlabelled: The persistent challenge posed by antibiotic-resistant bacteria and tuberculosis necessitates innovative approaches to antimicrobial treatment. This study explores the synthesis and characterization of NiZrO₃ nanoparticles integrated with graphene nanoplatelets (GNP) and multi-walled carbon nanotubes (MWCNT), using a microwave-assisted green synthesis route, employing fenugreek () seed extract as a gelling agent. The synthesised nanocomposites were systematically analyzed using XRD, FT-IR, Raman spectroscopy, HR-SEM and HR TEM analysis to assess structural, optical, and morphological properties.
View Article and Find Full Text PDFPharmacokinetic analysis using single dilution assays: enhancing precision, reducing errors and increasing throughput.
Bioanalysis
January 2025
Bioanalytical Sciences (BAS), Genentech Research and Early Development, South San Francisco, CA, USA.
Background: Technologies such as ELISA, MSD, and Gyrolab have been employed for quantifying protein therapeutics in clinical trials. However, these technologies have limitations with dynamic range often requiring multiple dilution steps, introducing potential errors and variability.
Results/methodology: A pharmacokinetics assay was successfully developed on the NUcleic acid Linked Immuno-Sandwich Assay (NULISA) platform with a concentration dynamic range exceeding 6 logs.
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