Drug covalently bound to polymers had formed, lately, platforms with great promise in drug delivery. These drug polymer conjugates (DPC) boosted drug loading and controlled medicine release with targeting ability. Herein, the ability of entecavir (E) conjugated to hyaluronic acid (HA) forming the core of vitamin E coated lipid nanohybrids (EE-HA LPH), to target Kupffer cells and hepatocyte had been proved. The drug was associated to HA with efficiency of 93.48 ± 3.14 % and nanohybrids loading of 22.02 ± 2.3 %. DiI labelled lipidic nanohybrids improved the macrophage uptake in J774 cells with a 21 day hepatocytes retention post intramuscular injection. Finally, in vivo biocompatibility and safety with respect to body weight, organs indices and histopathological alterations were demonstrated. Coating with vitamin E and conjugation of E to HA (a CD44 ligand), could give grounds for prospective application for vectored nano-platform in hepatitis B.
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http://dx.doi.org/10.1016/j.ijbiomac.2022.07.067 | DOI Listing |
Pflugers Arch
January 2025
Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky St, Kazan, 420111, RT, Russia.
Many synaptic vesicles undergo exocytosis in motor nerve terminals during neuromuscular communication. Endocytosis then recovers the synaptic vesicle pool and presynaptic membrane area. The kinetics of endocytosis may shape neuromuscular transmission, determining its long-term reliability.
View Article and Find Full Text PDFBackground: Selective corticolimbic vulnerability to tau pathology in Alzheimer's disease (AD) underlies clinicopathologic heterogeneity. The goal of this presentation will be to examine spatial heterogeneity of tangle distribution on a continuum through the utility of the corticolimbic index (CLix).
Method: We will discuss the development of CLix in the Florida Autopsied Multi-Ethnic (FLAME) cohort, which sought to collapse the spatial distribution of thioflavin-S tangle counts in AD (n=1361) to assign a continuum: hippocampal sparing with cortical predominance (<10), representative/typical (≥10 to <30), and limbic predominant with cortical sparing (≥30).
Alzheimers Dement
December 2024
cheonan chungmu hospital, cheonan si, Korea, Republic of (South).
Background: Vascular contributions to dementia & Alzheimer's disease are increasing recognized. Recent studies have suggested that blood-brain barrier breakdown is an early biomarker of human cognitive dysfunction, including the early clinical stages of AD. Apolipoprotein E4(APOE4), the major AD susceptibility gene, leads to accelerated blood-brain barrier breakdown & degeneration of brain capillary pericyte that maintain blood-brain barrier integrity.
View Article and Find Full Text PDFMol Pharm
January 2025
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
Developing low-toxicity, high-efficacy, and fast-acting strategies to manage acute liver injury (ALI) is critical due to its rapid progression and potential for severe outcomes. Curcumin (CUR) has shown promise in ALI therapy due to its ability to modulate the inflammatory microenvironment by scavenging reactive oxygen species (ROS). Nevertheless, CUR is highly hydrophobic limiting its bioavailability and effective in vivo transport, which hinders its further application.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Indiana University School of Medicine, Indianapolis, IN, USA.
Background: SHIP1 is a phosphatidyl inositol phosphatase encoded by INPP5D, which has been identified as a risk gene for Alzheimer's disease (AD). SHIP1 is expressed in microglia, the resident macrophage in brain. It is a complex, multidomain protein that acts as a negative regulator downstream from TREM2.
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