TY  - JOUR
AU  - Jauković, Valentina
AU  - Krajišnik, Danina
AU  - Daković, Aleksandra
AU  - Damjanović, Ana
AU  - Krstić, Jugoslav
AU  - Stojanović, Jovica
AU  - Calija, Bojan
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/598
AB  - The functionality of halloysite (Hal) nanotubes as drug carriers can be improved by lumen enlargement and polymer modification. This study investigates the influence of selective acid etching on Hal functionalization with cationic biopolymer chitosan. Hal was subjected to lumen etching under mild conditions, loaded under vacuum with nonsteroidal antiinflammatory drug aceclofenac, and incubated in an acidic solution of chitosan. The functionality of pristine and etched Hal before and upon polymer functionalization was assessed by ?-potential measurements, structural characterization (FT-IR, DSC and XRPD analysis), cell viability assay, drug loading and drug release studies. Acid etching increased specific surface area, pore volume and pore size of Hal, decreased ?-potential and facilitated binding of the cationic polymer. XRPD and DSC analysis revealed crystalline structure of etched Hal. Successful chitosan binding and drug entrapment were further confirmed by FT-IR and DSC studies. XRPD showed surface polymer binding. DSC and FT-IR analyses confirmed the presence of the entrapped drug in its crystalline form. Drug loading was increased for ?81% by selective lumen etching. Slight decrease of drug content occurred during chitosan functionalization due to aceclofenac diffusion in the polymer solution. The drug release was more sustained from etched Hal nanocomposites (up to ?87% for 12 h) than from pristine Hal (up to ?97% for 12 h) due to more intensive chitosan binding. High human fibroblast survival rates upon exposure to pristine and etched Hal before and after chitosan functionalization (>90% in the concentration of 1000 ?g/mL) confirmed that both lumen etching under mild conditions and polymer functionalization had no significant effect on cytocompatibility. Based on these findings, selective lumen etching in combination with polycation modification appears to be a promising approach for improvement of Hal nanotubes functionality by increasing payload, polymer binding capacity, and sustained release properties with no significant effect on their cytocompatibility.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release
VL  - 123
DO  - 10.1016/j.msec.2021.112029
UR  - conv_907
ER  - 

@article{
author = "Jauković, Valentina and Krajišnik, Danina and Daković, Aleksandra and Damjanović, Ana and Krstić, Jugoslav and Stojanović, Jovica and Calija, Bojan",
year = "2021",
abstract = "The functionality of halloysite (Hal) nanotubes as drug carriers can be improved by lumen enlargement and polymer modification. This study investigates the influence of selective acid etching on Hal functionalization with cationic biopolymer chitosan. Hal was subjected to lumen etching under mild conditions, loaded under vacuum with nonsteroidal antiinflammatory drug aceclofenac, and incubated in an acidic solution of chitosan. The functionality of pristine and etched Hal before and upon polymer functionalization was assessed by ?-potential measurements, structural characterization (FT-IR, DSC and XRPD analysis), cell viability assay, drug loading and drug release studies. Acid etching increased specific surface area, pore volume and pore size of Hal, decreased ?-potential and facilitated binding of the cationic polymer. XRPD and DSC analysis revealed crystalline structure of etched Hal. Successful chitosan binding and drug entrapment were further confirmed by FT-IR and DSC studies. XRPD showed surface polymer binding. DSC and FT-IR analyses confirmed the presence of the entrapped drug in its crystalline form. Drug loading was increased for ?81% by selective lumen etching. Slight decrease of drug content occurred during chitosan functionalization due to aceclofenac diffusion in the polymer solution. The drug release was more sustained from etched Hal nanocomposites (up to ?87% for 12 h) than from pristine Hal (up to ?97% for 12 h) due to more intensive chitosan binding. High human fibroblast survival rates upon exposure to pristine and etched Hal before and after chitosan functionalization (>90% in the concentration of 1000 ?g/mL) confirmed that both lumen etching under mild conditions and polymer functionalization had no significant effect on cytocompatibility. Based on these findings, selective lumen etching in combination with polycation modification appears to be a promising approach for improvement of Hal nanotubes functionality by increasing payload, polymer binding capacity, and sustained release properties with no significant effect on their cytocompatibility.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release",
volume = "123",
doi = "10.1016/j.msec.2021.112029",
url = "conv_907"
}

Jauković, V., Krajišnik, D., Daković, A., Damjanović, A., Krstić, J., Stojanović, J.,& Calija, B.. (2021). Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 123.
https://doi.org/10.1016/j.msec.2021.112029
conv_907

Jauković V, Krajišnik D, Daković A, Damjanović A, Krstić J, Stojanović J, Calija B. Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release. in Materials Science & Engineering C-Materials for Biological Applications. 2021;123.
doi:10.1016/j.msec.2021.112029
conv_907 .

Jauković, Valentina, Krajišnik, Danina, Daković, Aleksandra, Damjanović, Ana, Krstić, Jugoslav, Stojanović, Jovica, Calija, Bojan, "Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release" in Materials Science & Engineering C-Materials for Biological Applications, 123 (2021),
https://doi.org/10.1016/j.msec.2021.112029 .,
conv_907 .

TY  - JOUR
AU  - Calija, Bojan
AU  - Milić, Jela
AU  - Milasinović, Nikola
AU  - Daković, Aleksandra
AU  - Trifković, Kata
AU  - Stojanović, Jovica
AU  - Krajišnik, Danina
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/550
AB  - This study was designed to investigate functionality of tetracycline-loaded chitosan-halloysite nanocomposite films, with focus on evaluating the influence of chitosan molar mass on films applicability for sustained local antibiotic delivery. The films were prepared by casting and solvent evaporation using low, medium, and high molar mass chitosan. SEM analysis revealed compact, nonporous and rough surface of the nanocomposite films due to the presence of halloysite agglomerates and tetracycline crystals. Increasing chitosan molar mass led to higher values of elongation at break (from 21.65 +/- 2.65 to 34.48 +/- 2.34%), tensile strength (from 134.8 +/- 13.21 to 246.36 +/- 14.69 MPa), and elastic modulus (from 633.79 +/- 128.37 to 716.55 +/- 60.76 MPa) of the nanocomposite films. FT-IR, XRPD, and thermal analyses confirmed molar mass dependent chitosan-halloysite interactions and improved thermal stability of the nanocomposite films in comparison with chitosan films. The nanocomposite films released tetracycline in a sustained manner, with the slowest release achieved from the films consisting of low molar mass chitosan. Chitosan molar mass was confirmed to be a functionality-related characteristic of chitosan-halloysite nanocomposite films as potential sustained-release carriers for topical delivery of antibiotics.
PB  - Wiley, Hoboken
T2  - Journal of Applied Polymer Science
T1  - Functionality of chitosan-halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass
IS  - 8
VL  - 137
DO  - 10.1002/app.48406
UR  - conv_858
ER  - 

@article{
author = "Calija, Bojan and Milić, Jela and Milasinović, Nikola and Daković, Aleksandra and Trifković, Kata and Stojanović, Jovica and Krajišnik, Danina",
year = "2020",
abstract = "This study was designed to investigate functionality of tetracycline-loaded chitosan-halloysite nanocomposite films, with focus on evaluating the influence of chitosan molar mass on films applicability for sustained local antibiotic delivery. The films were prepared by casting and solvent evaporation using low, medium, and high molar mass chitosan. SEM analysis revealed compact, nonporous and rough surface of the nanocomposite films due to the presence of halloysite agglomerates and tetracycline crystals. Increasing chitosan molar mass led to higher values of elongation at break (from 21.65 +/- 2.65 to 34.48 +/- 2.34%), tensile strength (from 134.8 +/- 13.21 to 246.36 +/- 14.69 MPa), and elastic modulus (from 633.79 +/- 128.37 to 716.55 +/- 60.76 MPa) of the nanocomposite films. FT-IR, XRPD, and thermal analyses confirmed molar mass dependent chitosan-halloysite interactions and improved thermal stability of the nanocomposite films in comparison with chitosan films. The nanocomposite films released tetracycline in a sustained manner, with the slowest release achieved from the films consisting of low molar mass chitosan. Chitosan molar mass was confirmed to be a functionality-related characteristic of chitosan-halloysite nanocomposite films as potential sustained-release carriers for topical delivery of antibiotics.",
publisher = "Wiley, Hoboken",
journal = "Journal of Applied Polymer Science",
title = "Functionality of chitosan-halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass",
number = "8",
volume = "137",
doi = "10.1002/app.48406",
url = "conv_858"
}

Calija, B., Milić, J., Milasinović, N., Daković, A., Trifković, K., Stojanović, J.,& Krajišnik, D.. (2020). Functionality of chitosan-halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass. in Journal of Applied Polymer Science
Wiley, Hoboken., 137(8).
https://doi.org/10.1002/app.48406
conv_858

Calija B, Milić J, Milasinović N, Daković A, Trifković K, Stojanović J, Krajišnik D. Functionality of chitosan-halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass. in Journal of Applied Polymer Science. 2020;137(8).
doi:10.1002/app.48406
conv_858 .

Calija, Bojan, Milić, Jela, Milasinović, Nikola, Daković, Aleksandra, Trifković, Kata, Stojanović, Jovica, Krajišnik, Danina, "Functionality of chitosan-halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass" in Journal of Applied Polymer Science, 137, no. 8 (2020),
https://doi.org/10.1002/app.48406 .,
conv_858 .

TY  - JOUR
AU  - Janićijević, Jelena
AU  - Milić, Jela
AU  - Calija, Bojan
AU  - Micov, Ana
AU  - Stepanović-Petrović, Radica
AU  - Tomić, Maja
AU  - Daković, Aleksandra
AU  - Dobričić, Vladimir
AU  - Nedić-Vasiljević, Bojana
AU  - Krajišnik, Danina
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/471
AB  - Refined diatomite from the Kolubara coal basin (Serbia) was inorganically functionalized through a simple, one-pot, non-time-consuming procedure. Model drug ibuprofen was adsorbed on the functionalized diatomite under optimized conditions providing high drug Loading (similar to 201 mg g(-1)). Physicochemical characterization was performed on the starting and modified diatomite before and after ibuprofen adsorption. Dissolution testing was conducted on comprimates containing the drug adsorbed on the modified diatomite (composite) and those containing a physical mixture of the drug with the modified diatomite. The antihyperalgesic and the antiedematous activity of ibuprofen from both composites and physical mixtures were evaluated in vivo employing an inflammatory pain model in rats. Functionalization and subsequent drug adsorption had no significant effect on the diatomite ordered porous structure. Two forms of ibuprofen most likely coexisted in the adsorbed state - the acidic form and a salt/complex with aluminium. Both comprimate types showed extended ibuprofen release in vitro, but no significant influence on the duration of the ibuprofen effect was observed upon in vivo application of the composite or physical mixture. However, both the composite and the physical mixture were more effective than equivalent doses of ibuprofen in pain suppression in rats. This potentiation of the ibuprofen antihyperalgesic effect may result from the formation of the drug complex with the carrier and can be of clinical relevance.
PB  - Royal Soc Chemistry, Cambridge
T2  - Journal of Materials Chemistry B
T1  - Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite
EP  - 5822
IS  - 36
SP  - 5812
VL  - 6
DO  - 10.1039/c8tb01376d
UR  - conv_835
ER  - 

@article{
author = "Janićijević, Jelena and Milić, Jela and Calija, Bojan and Micov, Ana and Stepanović-Petrović, Radica and Tomić, Maja and Daković, Aleksandra and Dobričić, Vladimir and Nedić-Vasiljević, Bojana and Krajišnik, Danina",
year = "2018",
abstract = "Refined diatomite from the Kolubara coal basin (Serbia) was inorganically functionalized through a simple, one-pot, non-time-consuming procedure. Model drug ibuprofen was adsorbed on the functionalized diatomite under optimized conditions providing high drug Loading (similar to 201 mg g(-1)). Physicochemical characterization was performed on the starting and modified diatomite before and after ibuprofen adsorption. Dissolution testing was conducted on comprimates containing the drug adsorbed on the modified diatomite (composite) and those containing a physical mixture of the drug with the modified diatomite. The antihyperalgesic and the antiedematous activity of ibuprofen from both composites and physical mixtures were evaluated in vivo employing an inflammatory pain model in rats. Functionalization and subsequent drug adsorption had no significant effect on the diatomite ordered porous structure. Two forms of ibuprofen most likely coexisted in the adsorbed state - the acidic form and a salt/complex with aluminium. Both comprimate types showed extended ibuprofen release in vitro, but no significant influence on the duration of the ibuprofen effect was observed upon in vivo application of the composite or physical mixture. However, both the composite and the physical mixture were more effective than equivalent doses of ibuprofen in pain suppression in rats. This potentiation of the ibuprofen antihyperalgesic effect may result from the formation of the drug complex with the carrier and can be of clinical relevance.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Journal of Materials Chemistry B",
title = "Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite",
pages = "5822-5812",
number = "36",
volume = "6",
doi = "10.1039/c8tb01376d",
url = "conv_835"
}

Janićijević, J., Milić, J., Calija, B., Micov, A., Stepanović-Petrović, R., Tomić, M., Daković, A., Dobričić, V., Nedić-Vasiljević, B.,& Krajišnik, D.. (2018). Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite. in Journal of Materials Chemistry B
Royal Soc Chemistry, Cambridge., 6(36), 5812-5822.
https://doi.org/10.1039/c8tb01376d
conv_835

Janićijević J, Milić J, Calija B, Micov A, Stepanović-Petrović R, Tomić M, Daković A, Dobričić V, Nedić-Vasiljević B, Krajišnik D. Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite. in Journal of Materials Chemistry B. 2018;6(36):5812-5822.
doi:10.1039/c8tb01376d
conv_835 .

Janićijević, Jelena, Milić, Jela, Calija, Bojan, Micov, Ana, Stepanović-Petrović, Radica, Tomić, Maja, Daković, Aleksandra, Dobričić, Vladimir, Nedić-Vasiljević, Bojana, Krajišnik, Danina, "Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite" in Journal of Materials Chemistry B, 6, no. 36 (2018):5812-5822,
https://doi.org/10.1039/c8tb01376d .,
conv_835 .

TY  - JOUR
AU  - Calija, Bojan
AU  - Milić, Jela
AU  - Janićijević, Jelena
AU  - Daković, Aleksandra
AU  - Krajišnik, Danina
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/429
AB  - This study investigated the potential of halloysite nanotubes (HNTs) to improve the sustained release properties of chitosan (CS) microparticles cross-linked ionically with tripolyphosphate (TPP). Composite CS-HNTs microparticles were obtained by a simple and eco-friendly procedure based on a coaxial extrusion technique. Prior to encapsulation, a water-soluble model drug, verapamil hydrochloride (VH), was adsorbed successfully on HNTs. The microparticles were characterized by optical microscopy, Fourier transform infrared (FTIR) spectroscopy, differential thermal analysis/thermogravimetric analysis (DTA/TG) and evaluated for encapsulation efficiency and drug-release properties. The composite particles had a slightly deformed spherical shape and micrometric size with average perimeters ranging from 485.4 +/- 13.3 to 492.4 +/- 11.9 mu m. The results of FTIR spectroscopy confirmed non-covalent interactions between CS and HNTs within composite particle structures. The DTA and TG studies revealed increased thermal stability of the composite particles in comparison to the CS-TPP particles. Drug adsorption on HNTs prior to encapsulation led to an increase in encapsulation efficiency from 19.6 +/- 2.9 to 84.3 +/- 1.9%. In contrast to the rapid release of encapsulated model drug from CS-TPP microparticles, the composite CS-HNTs microparticles released drug in a sustained manner, showing the best fit to the Bhaskar model. The results presented here imply that HNTs could be used to improve morphology, encapsulation efficiency and sustained drug-release properties of CS microparticles cross-linked ionically with TPP.
PB  - Mineralogical Soc, Twickenham
T2  - Clay Minerals
T1  - Ionically cross-linked chitosan-halloysite composite microparticles for sustained drug release
EP  - 426
IS  - 4
SP  - 413
VL  - 52
DO  - 10.1180/claymin.2017.052.04.01
UR  - conv_823
ER  - 

@article{
author = "Calija, Bojan and Milić, Jela and Janićijević, Jelena and Daković, Aleksandra and Krajišnik, Danina",
year = "2017",
abstract = "This study investigated the potential of halloysite nanotubes (HNTs) to improve the sustained release properties of chitosan (CS) microparticles cross-linked ionically with tripolyphosphate (TPP). Composite CS-HNTs microparticles were obtained by a simple and eco-friendly procedure based on a coaxial extrusion technique. Prior to encapsulation, a water-soluble model drug, verapamil hydrochloride (VH), was adsorbed successfully on HNTs. The microparticles were characterized by optical microscopy, Fourier transform infrared (FTIR) spectroscopy, differential thermal analysis/thermogravimetric analysis (DTA/TG) and evaluated for encapsulation efficiency and drug-release properties. The composite particles had a slightly deformed spherical shape and micrometric size with average perimeters ranging from 485.4 +/- 13.3 to 492.4 +/- 11.9 mu m. The results of FTIR spectroscopy confirmed non-covalent interactions between CS and HNTs within composite particle structures. The DTA and TG studies revealed increased thermal stability of the composite particles in comparison to the CS-TPP particles. Drug adsorption on HNTs prior to encapsulation led to an increase in encapsulation efficiency from 19.6 +/- 2.9 to 84.3 +/- 1.9%. In contrast to the rapid release of encapsulated model drug from CS-TPP microparticles, the composite CS-HNTs microparticles released drug in a sustained manner, showing the best fit to the Bhaskar model. The results presented here imply that HNTs could be used to improve morphology, encapsulation efficiency and sustained drug-release properties of CS microparticles cross-linked ionically with TPP.",
publisher = "Mineralogical Soc, Twickenham",
journal = "Clay Minerals",
title = "Ionically cross-linked chitosan-halloysite composite microparticles for sustained drug release",
pages = "426-413",
number = "4",
volume = "52",
doi = "10.1180/claymin.2017.052.04.01",
url = "conv_823"
}

Calija, B., Milić, J., Janićijević, J., Daković, A.,& Krajišnik, D.. (2017). Ionically cross-linked chitosan-halloysite composite microparticles for sustained drug release. in Clay Minerals
Mineralogical Soc, Twickenham., 52(4), 413-426.
https://doi.org/10.1180/claymin.2017.052.04.01
conv_823

Calija B, Milić J, Janićijević J, Daković A, Krajišnik D. Ionically cross-linked chitosan-halloysite composite microparticles for sustained drug release. in Clay Minerals. 2017;52(4):413-426.
doi:10.1180/claymin.2017.052.04.01
conv_823 .

Calija, Bojan, Milić, Jela, Janićijević, Jelena, Daković, Aleksandra, Krajišnik, Danina, "Ionically cross-linked chitosan-halloysite composite microparticles for sustained drug release" in Clay Minerals, 52, no. 4 (2017):413-426,
https://doi.org/10.1180/claymin.2017.052.04.01 .,
conv_823 .

TY  - JOUR
AU  - Janićijević, Jelena
AU  - Krajišnik, Danina
AU  - Calija, Bojan
AU  - Nedić-Vasiljević, Bojana
AU  - Dobričić, Vladimir
AU  - Daković, Aleksandra
AU  - Antonijević, Milan D.
AU  - Milić, Jela
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/341
AB  - Diatomite makes a promising candidate for a drug carrier because of its high porosity, large surface area, modifiable surface chemistry and biocompatibility. Herein, refined diatomite from Kolubara coal basin, which complied with the pharmacopoeial requirements for heavy metals content and microbiological quality, was used as a starting material. Inorganic modification of the starting material was performed through a simple, one-step procedure. Significant increase in adsorbent loading with diclofenac sodium (DS) was achieved after the modification process (similar to 373 mg/g) which enabled the preparation of comprimates containing therapeutic dose of the adsorbed drug. Adsorption of DS onto modified diatomite resulted in the alteration of the drug's XRD pattern and FTIR spectrum. In vitro drug release studies in phosphate buffer pH 7.5 demonstrated prolonged DS release over 8 h from comprimates containing DS adsorbed on modified diatomite (up to 37% after 8 h) and those containing physical mixture of the same composition (up to 45% after 8 h). The results of in vivo toxicity testing on mice pointed on potential safety of both unmodified (starting) and modified diatomite. All these findings favor the application of diatomite as a potential functional drug carrier.
PB  - Elsevier, Amsterdam
T2  - International Journal of Pharmaceutics
T1  - Modified local diatomite as potential functional drug carrier-A model study for diclofenac sodium
EP  - 474
IS  - 2
SP  - 466
VL  - 496
DO  - 10.1016/j.ijpharm.2015.10.047
UR  - conv_747
ER  - 

@article{
author = "Janićijević, Jelena and Krajišnik, Danina and Calija, Bojan and Nedić-Vasiljević, Bojana and Dobričić, Vladimir and Daković, Aleksandra and Antonijević, Milan D. and Milić, Jela",
year = "2015",
abstract = "Diatomite makes a promising candidate for a drug carrier because of its high porosity, large surface area, modifiable surface chemistry and biocompatibility. Herein, refined diatomite from Kolubara coal basin, which complied with the pharmacopoeial requirements for heavy metals content and microbiological quality, was used as a starting material. Inorganic modification of the starting material was performed through a simple, one-step procedure. Significant increase in adsorbent loading with diclofenac sodium (DS) was achieved after the modification process (similar to 373 mg/g) which enabled the preparation of comprimates containing therapeutic dose of the adsorbed drug. Adsorption of DS onto modified diatomite resulted in the alteration of the drug's XRD pattern and FTIR spectrum. In vitro drug release studies in phosphate buffer pH 7.5 demonstrated prolonged DS release over 8 h from comprimates containing DS adsorbed on modified diatomite (up to 37% after 8 h) and those containing physical mixture of the same composition (up to 45% after 8 h). The results of in vivo toxicity testing on mice pointed on potential safety of both unmodified (starting) and modified diatomite. All these findings favor the application of diatomite as a potential functional drug carrier.",
publisher = "Elsevier, Amsterdam",
journal = "International Journal of Pharmaceutics",
title = "Modified local diatomite as potential functional drug carrier-A model study for diclofenac sodium",
pages = "474-466",
number = "2",
volume = "496",
doi = "10.1016/j.ijpharm.2015.10.047",
url = "conv_747"
}

Janićijević, J., Krajišnik, D., Calija, B., Nedić-Vasiljević, B., Dobričić, V., Daković, A., Antonijević, M. D.,& Milić, J.. (2015). Modified local diatomite as potential functional drug carrier-A model study for diclofenac sodium. in International Journal of Pharmaceutics
Elsevier, Amsterdam., 496(2), 466-474.
https://doi.org/10.1016/j.ijpharm.2015.10.047
conv_747

Janićijević J, Krajišnik D, Calija B, Nedić-Vasiljević B, Dobričić V, Daković A, Antonijević MD, Milić J. Modified local diatomite as potential functional drug carrier-A model study for diclofenac sodium. in International Journal of Pharmaceutics. 2015;496(2):466-474.
doi:10.1016/j.ijpharm.2015.10.047
conv_747 .

Janićijević, Jelena, Krajišnik, Danina, Calija, Bojan, Nedić-Vasiljević, Bojana, Dobričić, Vladimir, Daković, Aleksandra, Antonijević, Milan D., Milić, Jela, "Modified local diatomite as potential functional drug carrier-A model study for diclofenac sodium" in International Journal of Pharmaceutics, 496, no. 2 (2015):466-474,
https://doi.org/10.1016/j.ijpharm.2015.10.047 .,
conv_747 .

TY  - JOUR
AU  - Janićijević, Jelena
AU  - Krajišnik, Danina
AU  - Calija, Bojan
AU  - Dobričić, Vladimir
AU  - Daković, Aleksandra
AU  - Krstić, Jugoslav
AU  - Marković, Marija
AU  - Milić, Jela
PY  - 2014
UR  - https://ritnms.itnms.ac.rs/handle/123456789/321
AB  - Inorganic modification of diatomite was performed with the precipitation product of partially neutralized aluminum sulfate solution at three different mass ratios. The starting and the modified diatomites were characterized by SEM-EDS, FTIR, thermal analysis and zeta potential measurements and evaluated for drug loading capacity in adsorption batch experiments using diclofenac sodium (DS) as a model drug. In vitro drug release studies were performed in phosphate buffer pH 6.8 from comprimates containing: the drug adsorbed onto the selected modified diatomite sample (DAMD), physical mixture of the drug with the selected modified diatomite sample (PMDMD) and physical mixture of the drug with the starting diatomite (PMDD). In vivo acute toxicity testing of the modified diatomite samples was performed on mice. High adsorbent loading of the selected modified diatomite sample (similar to 250 mg/g in 2 h) enabled the preparation of comprimates containing adsorbed DS in the amount near to its therapeutic dose. Drug release studies demonstrated prolonged release of DS over a period of 8 h from both DAMD comprimates (18% after 8 h) and PMDMD comprimates (45% after 8 h). The release kinetics for DAMD and PMDMD comprimates fitted well with Korsmeyer-Peppas and Bhaskar models, indicating that the release mechanism was a combination of non-Fickian diffusion and ion exchange process.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Inorganically modified diatomite as a potential prolonged-release drug carrier
EP  - 420
SP  - 412
VL  - 42
DO  - 10.1016/j.msec.2014.05.052
UR  - conv_701
ER  - 

@article{
author = "Janićijević, Jelena and Krajišnik, Danina and Calija, Bojan and Dobričić, Vladimir and Daković, Aleksandra and Krstić, Jugoslav and Marković, Marija and Milić, Jela",
year = "2014",
abstract = "Inorganic modification of diatomite was performed with the precipitation product of partially neutralized aluminum sulfate solution at three different mass ratios. The starting and the modified diatomites were characterized by SEM-EDS, FTIR, thermal analysis and zeta potential measurements and evaluated for drug loading capacity in adsorption batch experiments using diclofenac sodium (DS) as a model drug. In vitro drug release studies were performed in phosphate buffer pH 6.8 from comprimates containing: the drug adsorbed onto the selected modified diatomite sample (DAMD), physical mixture of the drug with the selected modified diatomite sample (PMDMD) and physical mixture of the drug with the starting diatomite (PMDD). In vivo acute toxicity testing of the modified diatomite samples was performed on mice. High adsorbent loading of the selected modified diatomite sample (similar to 250 mg/g in 2 h) enabled the preparation of comprimates containing adsorbed DS in the amount near to its therapeutic dose. Drug release studies demonstrated prolonged release of DS over a period of 8 h from both DAMD comprimates (18% after 8 h) and PMDMD comprimates (45% after 8 h). The release kinetics for DAMD and PMDMD comprimates fitted well with Korsmeyer-Peppas and Bhaskar models, indicating that the release mechanism was a combination of non-Fickian diffusion and ion exchange process.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Inorganically modified diatomite as a potential prolonged-release drug carrier",
pages = "420-412",
volume = "42",
doi = "10.1016/j.msec.2014.05.052",
url = "conv_701"
}

Janićijević, J., Krajišnik, D., Calija, B., Dobričić, V., Daković, A., Krstić, J., Marković, M.,& Milić, J.. (2014). Inorganically modified diatomite as a potential prolonged-release drug carrier. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 42, 412-420.
https://doi.org/10.1016/j.msec.2014.05.052
conv_701

Janićijević J, Krajišnik D, Calija B, Dobričić V, Daković A, Krstić J, Marković M, Milić J. Inorganically modified diatomite as a potential prolonged-release drug carrier. in Materials Science & Engineering C-Materials for Biological Applications. 2014;42:412-420.
doi:10.1016/j.msec.2014.05.052
conv_701 .

Janićijević, Jelena, Krajišnik, Danina, Calija, Bojan, Dobričić, Vladimir, Daković, Aleksandra, Krstić, Jugoslav, Marković, Marija, Milić, Jela, "Inorganically modified diatomite as a potential prolonged-release drug carrier" in Materials Science & Engineering C-Materials for Biological Applications, 42 (2014):412-420,
https://doi.org/10.1016/j.msec.2014.05.052 .,
conv_701 .