Keyword search (4,163 papers available)

"Naccache R" Authored Publications:

Title Authors PubMed ID
1 Response surface analysis of CuInSe sub 2 /sub nanoparticle synthesis: unravelling the interplay of temperature, time, and ligand composition for size control Páramo L; Garcia-Henao C; Capobianco JA; Naccache R; 41729592
CHEMBIOCHEM
2 Mechanochemically-mediated dynamic imine bond conjugation for drug delivery using carbon dots Fuoco G; Mandl GA; De Mesa C; Capobianco JA; Naccache R; 41288467
CHEMBIOCHEM
3 pH-Sensitive Release of Functionalized Chiral Carbon Dots from PLGA Coatings on Titanium Alloys for Biomedical Applications López-Muñoz R; Chevallier P; Copes F; Naccache R; Mantovani D; 41096312
CHEMBIOCHEM
4 Unraveling glyphosate sequestration: The role of natural organic matter fractions in soil-water contamination and retention Adeola AO; Paramo L; Duarte MP; Fuoco G; Naccache R; 40939356
CHEMBIOCHEM
5 Luminescent Electro-Spun Nanofibers Crosslinked with Boronic Esters Exhibiting Controlled Release of Carbon Dots for Detection of Wound pHs and Enhanced Antimicrobial Lokuge ND; Casillas-Popova SN; Singh P; Clermont-Paquette A; Skinner CD; Findlay BL; Naccache R; Oh JK; 40920389
BIOLOGY
6 Surface charge dictates the mechanism of cellular uptake of fluorescent amine passivated carbon dots Clermont-Paquette A; Fuoco G; Brancheriau CR; Piekny A; Naccache R; 40861971
CHEMBIOCHEM
7 A Zirconium-Based Metal-Organic Framework as an Effective Green Catalyst for the Synthesis of Biodiesel P Duarte M; Diniz CV; Bicalho HA; Naccache R; Howarth AJ; 40267316
CHEMBIOCHEM
8 Emerging hazardous chemicals and biological pollutants in Canadian aquatic systems and remediation approaches: A comprehensive status report Adeola AO; Paramo L; Fuoco G; Naccache R; 39278485
CHEMBIOCHEM
9 Efficient Decaffeination with Recyclable Magnetic Microporous Carbon from Renewable Sources: Kinetics and Isotherm Analysis Duarte MP; Adeola AO; Fuoco G; Jargaille TJ; Naccache R; 38909946
CHEMBIOCHEM
10 Electroconductive Collagen-Carbon Nanodots Nanocomposite Elicits Neurite Outgrowth, Supports Neurogenic Differentiation and Accelerates Electrophysiological Maturation of Neural Progenitor Spheroids Lomboni DJ; Ozgun A; de Medeiros TV; Staines W; Naccache R; Woulfe J; Variola F; 37922888
CHEMBIOCHEM
11 Advances in the design and use of carbon dots for analytical and biomedical applications Adeola AO; Clermont-Paquette A; Piekny A; Naccache R; 37757783
CHEMBIOCHEM
12 Ratiometric Sensing of Glyphosate in Water Using Dual Fluorescent Carbon Dots Clermont-Paquette A; Mendoza DA; Sadeghi A; Piekny A; Naccache R; 37299928
BIOLOGY
13 Engineering the Surface Chemistry and Morphology of Polymeric Carbon Nitrides Towards Greener Heterogeneous Catalysts for Biodiesel Synthesis de Medeiros TV; Macina A; Bicalho HA; Naccache R; 37058095
CHEMBIOCHEM
14 Tuning residual chirality in carbon dots with anti-microbial properties Victoria F; Manioudakis J; Zaroubi L; Findlay B; Naccache R; 35518167
CHEMBIOCHEM
15 Green synthesis of carbon dots and their applications Chahal S; Macairan JR; Yousefi N; Tufenkji N; Naccache R; 35478913
ENCS
16 Role of tau protein on the photophysical properties of fluorescent carbon dots Camilus NS; Lucas S; Wu C; Naccache R; Martic S; 34971135
CONCORDIA
17 Elucidating the mechanism of dual-fluorescence in carbon dots Macairan JR; de Medeiros TV; Gazzetto M; Yarur Villanueva F; Cannizzo A; Naccache R; 34388574
CNSR
18 Effects of polydopamine-passivation on the optical properties of carbon dots and its potential use in vivo. Pappalardo JS, Macairan JR, Macina A, Poulhazan A, Quattrocchi V, Marcotte I, Naccache R 32666968
NA
19 Terahertz three-dimensional monitoring of nanoparticle-assisted laser tissue soldering. Dong J, Breitenborn H, Piccoli R, Besteiro LV, You P, Caraffini D, Wang ZM, Govorov AO, Naccache R, Vetrone F, Razzari L, Morandotti R 32341881
CHEMBIOCHEM
20 Facile Aqueous-Phase Synthesis of an Ultrasmall Bismuth Nanocatalyst for the Reduction of 4-Nitrophenol. Liang Y, Manioudakis J, Macairan JR, Askari MS, Forgione P, Naccache R 31552336
CHEMBIOCHEM

 

Title:pH-Sensitive Release of Functionalized Chiral Carbon Dots from PLGA Coatings on Titanium Alloys for Biomedical Applications
Authors:López-Muñoz RChevallier PCopes FNaccache RMantovani D
Link:https://pubmed.ncbi.nlm.nih.gov/41096312/
DOI:10.3390/polym17192667
Publication:Polymers
Keywords:PLGA coatingTitanium alloyschiral carbon dotspH-responsive releasesurface modification
PMID:41096312 Category: Date Added:2025-10-16
Dept Affiliation: CHEMBIOCHEM
1 Science Faculty, Department of Chemistry, Sherbrooke University, Sherbrooke, QC J1K 2R1, Canada.
2 Laboratory for Biomaterials and Bioengineering, CRC-I, Department of Min-Met-Materials Engineering & CHU de Québec Research Center, Regenerative Medicine, Laval University, Québec, QC G1V 0A6, Canada.
3 Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC H4B 1R6, Canada.
4 Quebec Centre for Advanced Materials, Concordia University, Montreal, QC H4B 1R6, Canada.

Description:

Titanium and its alloys are the most widely used metallic materials for bone contact implants. However, despite advances in implant technology, these alloys are still susceptible to post-operative clinical complications such as inflammation, which is often joined by infections and biofilm formation. A number of coatings were studied to overcome the drawbacks of these complications, but the controlled release of bioactive molecules over the first few days and the adhesion of the coating to the substrate remain recognized challenges. Carbon dots and the antibacterial potential of chiral carbon dots (CCDs) were recently reported, and their chirality was identified as a major contribution to the bactericidal effect. This study aimed to achieve a stimuli-responsive medium-term controlled release for up to one month. Two types of chiral carbon dots (CCDs) with distinct functional groups were incorporated into a stable and adherent biodegradable polymer coating, i.e., poly(lactic-co-glycolic acid) (PLGA). To enhance the coating adhesion, the titanium alloy surfaces were pre-treated and activated. The wettability, morphology, and surface composition of the coatings were characterized by contact angle, profilometry, SEM, and XPS, respectively. Coating degradation, adhesion, and CCDs release were studied at physiological pH (7.4) and at an acidic pH characteristic of an inflammatory site (pH 3.0) for up to one month. Their biological performances and blood compatibility were assessed as well. Degradation studies conducted over 28 days revealed a slow mass loss of approximately 10%, with maximum release rates for CCDs-OH and CCDs-NH2 of 67% and 45% at pH 7.4, respectively. At pH 3.0 an inverse trend was observed with 49% and 59% maximum release after 28 days. Furthermore, the coatings did not exhibit any cytotoxic and hemolytic effects. These findings demonstrate the potential of this approach to providing titanium implants with pH-sensitive controlled release of bioactive CCDs lasting up to one month, which could address key challenges in implant-associated complications.





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