Deconvoluted Fourier-transform LNT-IR study of coordination copper(II) compounds with dextran derivatives

Nikolić, Goran; Cakić, Milorad D.; Mitić, Žarko; Ilić, Lj.

doi:10.1134/s1070328408050023

Cited by 25 publications

(25 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…No effect of the conformation change was observed for the recrystallized Cu(II)-RLMP complex, especially in the range of 1000-700 cm -1 . When the a-D-glucopyranose units with C1 chair conformations are present, the FTIR spectra exhibit one band in the region between 925-885 cm -1 and another one around 860-820 cm -1 , which are assigned to mixed CCH deformation vibrations (Shingel, 2002;Nikolic et al, 2008). The results allowed one to suggest a predominant crystalline form of the recrystallized Cu(II)-RLMP complexes.…”

Section: Fig 7 Region Of δ(Ch) and δ(Oh) Ch 2 Oh Grop Vibrations Inmentioning

confidence: 60%

“…3400 cm -1 which is the result of valent vibrations OH groups and valent vibration of H 2 O constitutional molecules. The band on the 1640 cm -1 is the result δ(HOH) (Nikolic et al, 1996;Bellamy, 1954;Nikolic et al, 2007;Nikolic et al, 2008). The appearance of the spectrum in this region is different, as expected.…”

Section: Resultsmentioning

confidence: 79%

“…Water protons take part in the formation of relatively weak hydrogen bonds (Nikolic et al, 1996;Bellamy, 1954;Nikolic et al, 2007;Nikolic et al, 2008). In the 1200-1000 cm -1 region, the spectra of RLMP and the complex comprise a number of highly fused bands.…”

Section: Resultsmentioning

confidence: 99%

“…Dextran and complexes with Cu(II) ion have one crystallographic type of water molecule (1640 cm −1 ). Water protons take part in the formation of relatively weak hydrogen bonds Nikolic et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…The resultant FTIR vibrational microspectroscopy can provide molecular information of samples with a high spatial resolution at microscopic level. Samples with microscopic size can be nondestructively analyzed by both vibrational microspectroscopies, particularly in the application of biomedical sciences (Kacurakova et al, 2001;Lin et al, 2007;Chiu et al, 2004;Nikolic et al, 2008). Thus, the use of vibrational microspectroscopy has extensively become a great potential over other spectroscopic techniques for noninvasive investigation of chemical components of ultrastructural samples (carbohydrates, lipids, proteins, nucleotides) (Mousia et al, 2001;Yu et al, 2005).…”

Section: Fig 7 Region Of δ(Ch) and δ(Oh) Ch 2 Oh Grop Vibrations Inmentioning

confidence: 99%

See 4 more Smart Citations

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Nikolić¹,

Cakić²

2011

Fourier Transforms - New Analytical Approaches and FTIR Strategies

View full text Add to dashboard Cite

Section: Fig 7 Region Of δ(Ch) and δ(Oh) Ch 2 Oh Grop Vibrations Inmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Fig 7 Region Of δ(Ch) and δ(Oh) Ch 2 Oh Grop Vibrations Inmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Nikolić¹,

Cakić²

2011

Fourier Transforms - New Analytical Approaches and FTIR Strategies

View full text Add to dashboard Cite

Novel Anti‐Adhesive Biomaterial Patches: Preventing Biofilm with Metal Complex Films (MCF) Derived from a Microalgal Polysaccharide

Golberg

Emuna

Moppes

et al. 2016

Adv Materials Inter

View full text Add to dashboard Cite

Biofilm matrices formed by irreversibly surface‐anchored bacteria cause significant economic damage in the industrial and biomedical environments. The ubiquity of biofilms promotes increased investment in the development of technologies that will impede bacteria‐surface association. Certain surface topographical fabrications may aid in preventing colonization. Herein, algal‐secreted polysaccharide (Ps) biomaterial patches and metal complex films (MCF) are examined for their anti‐Acinetobacter baumannii and anti‐Pseudomonas aeruginosa biofilm properties. Ps moderately reduces biofilm formation; the Cu‐MCF coating has significant anti‐biofim activity while Zn‐MCF had no effect. A mechanistic examination of these effects shows a two‐fold greater coverage of the anti‐adhesive surface of Cu‐MCF than that of the control due to the induction of swarming motility, thus impeding bacterial transformation to the irreversibly attached state. Chemical compositions of the coatings and the interactions between coating components are examined using X‐ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectrometry. Cu‐MCF surface morphology comprises protruding needle‐like structures up to 100 nm in height that are lacking in both the Ps and the Zn‐MCF. Their presence in an aqueous solution is yet unproven and role in preventing their bacterial attachment open to speculation. The present study highlights the need to generate novel biomaterials that integrate naturally occurring anti‐adhesive polymers with specific metal ions to improve the chemical, physical and biological properties of these anti‐adhesive surfaces. Cu‐MCF complexes fabricated with thermal and pressure stability to prevent metal ion leakage hold promise for a broad spectrum of industrial and medical anti‐biofilm applications.

show abstract

Dextran sulfate as a drug delivery platform for drug‐coated balloons: Preparation, characterization, in vitro drug elution, and smooth muscle cell response

et al. 2015

View full text Add to dashboard Cite

Drug‐coated balloons (DCBs) have now emerged as a promising approach to treat peripheral artery disease. However, a significant amount of drug from the balloon surface is lost during balloon tracking and results in delivering only a subtherapeutic dose of drug at the diseased site. Hence, in this study, the use of dextran sulfate (DS) polymer was investigated as a platform to control the drug release from balloons. An antiproliferative drug, paclitaxel (PAT), was incorporated into DS films (PAT‐DS). The characterizations using SEM, FT‐IR, and DSC showed that the films prepared were smooth and homogenous with PAT molecularly dispersed in the bulk of DS matrix in amorphous form. An investigation on the interaction of smooth muscle cells (SMCs) with control‐DS and PAT‐DS films showed that both films inhibited SMC growth, with a superior inhibitory effect observed for PAT‐DS films. PAT‐DS coatings were then produced on balloon catheters. The integrity of coatings was well‐maintained when the balloons were either deflated or inflated. In this study, up to 2.2 µg/mm2 of PAT was loaded on the balloons using the DS platform. Drug elution studies showed that only 10 to 20% of the total PAT loaded was released from the PAT‐DS coated balloons during the typical time period of balloon tracking (1 min) and then ∼80% of the total PAT loaded was released during the typical time period of balloon inflation and treatment (from 1 min to 4 min). Thus, this study demonstrated the use of DS as a platform to control drug delivery from balloons. © 2015 The Authors Journal of Biomedical Materials Research Part B: Applied Biomaterials Published by Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1416–1430, 2016.

show abstract

Deconvoluted Fourier-transform LNT-IR study of coordination copper(II) compounds with dextran derivatives

Cited by 25 publications

References 33 publications

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Novel Anti‐Adhesive Biomaterial Patches: Preventing Biofilm with Metal Complex Films (MCF) Derived from a Microalgal Polysaccharide

Dextran sulfate as a drug delivery platform for drug‐coated balloons: Preparation, characterization, in vitro drug elution, and smooth muscle cell response

Contact Info

Product

Resources

About