Timotijević, Mirjana

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  • Timotijević, Mirjana (3)
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Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova

Timotijević, Mirjana

(Универзитет у Београду, Фармацеутски факултет, 2022)

TY  - THES
AU  - Timotijević, Mirjana
PY  - 2022
UR  - https://eteze.bg.ac.rs/application/showtheses?thesesId=9060
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:29137/bdef:Content/download
UR  - https://plus.cobiss.net/cobiss/sr/sr/bib/84209673
UR  - https://nardus.mpn.gov.rs/handle/123456789/21385
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4840
AB  - Film-formirajući sistemi (FFS) na bazi polimera su dizajnirani kao napredni, inovativni nosačilekova koji nakon sušenja na koži formiraju tanak, supstantivan film. Ovi nosači treba da obezbedekontrolisanu dermalnu isporuku lekovitih supstanci. Cilj doktorske disertacije je bio razvoj,optimizacija i sveobuhvatna fizičkohemijska, tribološka i biofarmaceutska karakterizacija FFS, ucilju dobijanja optimalnih FFS namenjenih za ciljanu dermalnu isporuku betametazondipropionata(BD), kako bi se smanjila učestalost primene i time potencijalnih neželjenih efekata (npr. u terapijipsorijaze). U početnoj fazi, unutar preformulacione studije korišćeni su različiti tipovi polimera ilikombinacije, poput Eudragit ® RS PO, Eudragit® NE 30 D, Klucel® GF u različitimkoncentracijama, kombinovani sa plastifikatorima poput trietil-citrata, tributil-citrata,propilenglikola i glicerola, opciono sa inhenserom penetracije/nejonskim surfaktantom (polisorbat80) i više sistema rastvarača. Deo istraživanja je posvećen razvoju i/ili optimizaciji različitih in vitroi in vivo metoda koje bi bile podesne za karakterizaciju FFS, a koje bi efikasno pružile uvid u uticajformulacionih i procesnih parametara na karakteristike dermalnih filmova koje bi se mogle odrazitina njihovu supstantivnost na koži, vodeći ka definisanju specifičnih kritičnih atributa kvaliteta.Dodatno je ispitan uticaj topografije filmova na svojstvo bioadhezivnosti. U završnoj faziistraživanja, poseban deo je posvećen in vitro ispitivanju permeacije BD iz razvijenih formulacija, idefinisanju seta kriterijuma i faktora formulacije koji u najvećoj meri određuju permeaciju.Razvijeni FFS su se pokazali kao podesni prospektivni nosači za ciljanu i produženu dermalnuisporuku BD, podstičući njihov dalji razvoj.
AB  - Polymer-based film forming systems (FFS), designed as advanced, innovative drug carriers afterdrying form a thin, substantive film. These vehicles should provide controlled dermal delivery ofactive pharmaceutical ingredients. The aim of the present doctoral dissertation was thedevelopment, optimization and comprehensive physicochemical, tribological and biopharmaceuticalcharacterization of the FFS, with the goal to obtain optimal FFS for targeted dermal delivery ofbetamethasone dipropionate (BD), in order to reduce the dosing frequency and thereby potentialside effects (e.g. in therapy of psoriasis). Within the pre-formulation phase of the study, distincttypes of polymers or combinations such as Eudragit ® RS PO, Eudragit® NE 30 D, Klucel® GF,were used in various concentrations, combined with a range of plasticizers like triethyl citrate,tributyl citrate, propylene glycol and glycerol, optionally with a penetration enhancer/non-ionicsurfactant (polysorbate 80), and with several solvent systems. A part of the research was dedicatedto development and/or optimization of diverse in vitro and in vivo methods able to discernformulation and process parameters crucial for dermal film characteristics which might reflect theirskin substantivity, leading to defining specific critical quality attributes. Additionally, the filmtopography’s influence on bioadhesion was tested. In the final phase, a special part of the researchwas dedicated to the in vitro biopharmaceutical testing of the developed formulations and defining aset of criteria and formulation factors which have the most influence on BD permeation.The developed FFS were shown to be adequate prospective drug carriers for targeted and prolongeddermal delivery of BD, encouraging their further development.
PB  - Универзитет у Београду, Фармацеутски факултет
T2  - Универзитет у Београду
T1  - Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova
UR  - https://hdl.handle.net/21.15107/rcub_nardus_21385
ER  - 
@phdthesis{
author = "Timotijević, Mirjana",
year = "2022",
abstract = "Film-formirajući sistemi (FFS) na bazi polimera su dizajnirani kao napredni, inovativni nosačilekova koji nakon sušenja na koži formiraju tanak, supstantivan film. Ovi nosači treba da obezbedekontrolisanu dermalnu isporuku lekovitih supstanci. Cilj doktorske disertacije je bio razvoj,optimizacija i sveobuhvatna fizičkohemijska, tribološka i biofarmaceutska karakterizacija FFS, ucilju dobijanja optimalnih FFS namenjenih za ciljanu dermalnu isporuku betametazondipropionata(BD), kako bi se smanjila učestalost primene i time potencijalnih neželjenih efekata (npr. u terapijipsorijaze). U početnoj fazi, unutar preformulacione studije korišćeni su različiti tipovi polimera ilikombinacije, poput Eudragit ® RS PO, Eudragit® NE 30 D, Klucel® GF u različitimkoncentracijama, kombinovani sa plastifikatorima poput trietil-citrata, tributil-citrata,propilenglikola i glicerola, opciono sa inhenserom penetracije/nejonskim surfaktantom (polisorbat80) i više sistema rastvarača. Deo istraživanja je posvećen razvoju i/ili optimizaciji različitih in vitroi in vivo metoda koje bi bile podesne za karakterizaciju FFS, a koje bi efikasno pružile uvid u uticajformulacionih i procesnih parametara na karakteristike dermalnih filmova koje bi se mogle odrazitina njihovu supstantivnost na koži, vodeći ka definisanju specifičnih kritičnih atributa kvaliteta.Dodatno je ispitan uticaj topografije filmova na svojstvo bioadhezivnosti. U završnoj faziistraživanja, poseban deo je posvećen in vitro ispitivanju permeacije BD iz razvijenih formulacija, idefinisanju seta kriterijuma i faktora formulacije koji u najvećoj meri određuju permeaciju.Razvijeni FFS su se pokazali kao podesni prospektivni nosači za ciljanu i produženu dermalnuisporuku BD, podstičući njihov dalji razvoj., Polymer-based film forming systems (FFS), designed as advanced, innovative drug carriers afterdrying form a thin, substantive film. These vehicles should provide controlled dermal delivery ofactive pharmaceutical ingredients. The aim of the present doctoral dissertation was thedevelopment, optimization and comprehensive physicochemical, tribological and biopharmaceuticalcharacterization of the FFS, with the goal to obtain optimal FFS for targeted dermal delivery ofbetamethasone dipropionate (BD), in order to reduce the dosing frequency and thereby potentialside effects (e.g. in therapy of psoriasis). Within the pre-formulation phase of the study, distincttypes of polymers or combinations such as Eudragit ® RS PO, Eudragit® NE 30 D, Klucel® GF,were used in various concentrations, combined with a range of plasticizers like triethyl citrate,tributyl citrate, propylene glycol and glycerol, optionally with a penetration enhancer/non-ionicsurfactant (polysorbate 80), and with several solvent systems. A part of the research was dedicatedto development and/or optimization of diverse in vitro and in vivo methods able to discernformulation and process parameters crucial for dermal film characteristics which might reflect theirskin substantivity, leading to defining specific critical quality attributes. Additionally, the filmtopography’s influence on bioadhesion was tested. In the final phase, a special part of the researchwas dedicated to the in vitro biopharmaceutical testing of the developed formulations and defining aset of criteria and formulation factors which have the most influence on BD permeation.The developed FFS were shown to be adequate prospective drug carriers for targeted and prolongeddermal delivery of BD, encouraging their further development.",
publisher = "Универзитет у Београду, Фармацеутски факултет",
journal = "Универзитет у Београду",
title = "Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova",
url = "https://hdl.handle.net/21.15107/rcub_nardus_21385"
}
Timotijević, M.. (2022). Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova. in Универзитет у Београду
Универзитет у Београду, Фармацеутски факултет..
https://hdl.handle.net/21.15107/rcub_nardus_21385
Timotijević M. Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova. in Универзитет у Београду. 2022;.
https://hdl.handle.net/21.15107/rcub_nardus_21385 .
Timotijević, Mirjana, "Polimerni film-formirajući sistemi za dermalnu isporuku betametazondipropionata: definisanje kritičnih atributa kvaliteta primenom optimizovanih fizičkohemijskih, triboloških i biofarmaceutskih testova" in Универзитет у Београду (2022),
https://hdl.handle.net/21.15107/rcub_nardus_21385 .

Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study

Timotijević, Mirjana; Ilić, Tanja; Marković, Bojan; Ranđelović, Danijela; Cekić, Nebojša; Nikolić, Ines; Savić, Snežana; Pantelić, Ivana

(MDPI, 2022)

TY  - JOUR
AU  - Timotijević, Mirjana
AU  - Ilić, Tanja
AU  - Marković, Bojan
AU  - Ranđelović, Danijela
AU  - Cekić, Nebojša
AU  - Nikolić, Ines
AU  - Savić, Snežana
AU  - Pantelić, Ivana
PY  - 2022
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4169
AB  - Polymeric film-forming systems have emerged as an esthetically acceptable option for targeted, less frequent and controlled dermal drug delivery. However, their dynamic nature (rapid evaporation of solvents leading to the formation of thin films) presents a true characterization chal- lenge. In this study, we tested a tiered characterization approach, leading to more efficient definition of the quality target product profiles of film-forming systems. After assessing a number of physico- chemico-mechanical properties, thermal, spectroscopic and microscopic techniques were introduced. Final confirmation of betamethasone dipropionate-loaded FFS biopharmaceutical properties was sought via an in vitro skin permeation study. A number of applied characterization methods showed complementarity. The sample based on a combination of hydrophobic Eudragit® RS PO and hy- droxypropyl cellulose showed higher viscosity (47.17 ± 3.06 mPa·s) and film thickness, resulting in sustained skin permeation (permeation rate of 0.348 ± 0.157 ng/cm2 h), and even the pH of the sample with Eudragit® NE 30D, along with higher surface roughness and thermal analysis, implied its immediate delivery through the epidermal membrane. Therefore, this study revealed the utility of several methods able to refine the number of needed tests within the final product profile.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study
VL  - 23
IS  - 11
DO  - 10.3390/ijms23116013
ER  - 
@article{
author = "Timotijević, Mirjana and Ilić, Tanja and Marković, Bojan and Ranđelović, Danijela and Cekić, Nebojša and Nikolić, Ines and Savić, Snežana and Pantelić, Ivana",
year = "2022",
abstract = "Polymeric film-forming systems have emerged as an esthetically acceptable option for targeted, less frequent and controlled dermal drug delivery. However, their dynamic nature (rapid evaporation of solvents leading to the formation of thin films) presents a true characterization chal- lenge. In this study, we tested a tiered characterization approach, leading to more efficient definition of the quality target product profiles of film-forming systems. After assessing a number of physico- chemico-mechanical properties, thermal, spectroscopic and microscopic techniques were introduced. Final confirmation of betamethasone dipropionate-loaded FFS biopharmaceutical properties was sought via an in vitro skin permeation study. A number of applied characterization methods showed complementarity. The sample based on a combination of hydrophobic Eudragit® RS PO and hy- droxypropyl cellulose showed higher viscosity (47.17 ± 3.06 mPa·s) and film thickness, resulting in sustained skin permeation (permeation rate of 0.348 ± 0.157 ng/cm2 h), and even the pH of the sample with Eudragit® NE 30D, along with higher surface roughness and thermal analysis, implied its immediate delivery through the epidermal membrane. Therefore, this study revealed the utility of several methods able to refine the number of needed tests within the final product profile.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study",
volume = "23",
number = "11",
doi = "10.3390/ijms23116013"
}
Timotijević, M., Ilić, T., Marković, B., Ranđelović, D., Cekić, N., Nikolić, I., Savić, S.,& Pantelić, I.. (2022). Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study. in International Journal of Molecular Sciences
MDPI., 23(11).
https://doi.org/10.3390/ijms23116013
Timotijević M, Ilić T, Marković B, Ranđelović D, Cekić N, Nikolić I, Savić S, Pantelić I. Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study. in International Journal of Molecular Sciences. 2022;23(11).
doi:10.3390/ijms23116013 .
Timotijević, Mirjana, Ilić, Tanja, Marković, Bojan, Ranđelović, Danijela, Cekić, Nebojša, Nikolić, Ines, Savić, Snežana, Pantelić, Ivana, "Coupling AFM, DSC and FT-IR towards Elucidation of Film-Forming Systems Transformation to Dermal Films: A Betamethasone Dipropionate Case Study" in International Journal of Molecular Sciences, 23, no. 11 (2022),
https://doi.org/10.3390/ijms23116013 . .
1
1

Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems

Timotijević, Mirjana; Ilić, Tanja; Savić, Snežana; Pantelić, Ivana

(MDPI, 2022)

TY  - JOUR
AU  - Timotijević, Mirjana
AU  - Ilić, Tanja
AU  - Savić, Snežana
AU  - Pantelić, Ivana
PY  - 2022
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4047
AB  - Topical film-forming systems (FFS) change drastically after solvent displacement, therefore indicating their skin metamorphosis/transformation as a property of special regulatory and research interest. This paper deals with the lack of suitable characterization techniques, suggesting a set of methods able to provide a comprehensive notion of FFS skin performance. After screening the physico-chemical, mechanical and sensory properties of FFS and resulting films, an elaborate three- phase in vivo study was performed, covering skin irritation, friction and substantivity. Upon removal of 24-hour occlusion, no significant change in erythema index was observed, while the film-former type (cellulose ether, acrylate and/or vinyl polymer) affected transepidermal water loss (TEWL); hydrophobic methacrylate copolymer-based samples decreased TEWL by 40–50%, suggesting a semi-occlusive effect. Although both the tribological parameters related to the friction coefficient and the friction curve’s plateau provided valuable data, their analysis indicated the importance of the moment the plateau is reached as the onset of the secondary formulation, while the tertiary state is still best described by the completion of the film’s drying time. The final part of the in vivo study proved the high in-use substantivity of all samples but confirmed the optimal 4:1 ratio of hydrophobic cationic and hydrophilic polymers, as indicated during early physico-mechanical screening.
PB  - MDPI
T2  - Pharmaceutics
T1  - Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems
VL  - 14
IS  - 2
DO  - 10.3390/pharmaceutics14020223
ER  - 
@article{
author = "Timotijević, Mirjana and Ilić, Tanja and Savić, Snežana and Pantelić, Ivana",
year = "2022",
abstract = "Topical film-forming systems (FFS) change drastically after solvent displacement, therefore indicating their skin metamorphosis/transformation as a property of special regulatory and research interest. This paper deals with the lack of suitable characterization techniques, suggesting a set of methods able to provide a comprehensive notion of FFS skin performance. After screening the physico-chemical, mechanical and sensory properties of FFS and resulting films, an elaborate three- phase in vivo study was performed, covering skin irritation, friction and substantivity. Upon removal of 24-hour occlusion, no significant change in erythema index was observed, while the film-former type (cellulose ether, acrylate and/or vinyl polymer) affected transepidermal water loss (TEWL); hydrophobic methacrylate copolymer-based samples decreased TEWL by 40–50%, suggesting a semi-occlusive effect. Although both the tribological parameters related to the friction coefficient and the friction curve’s plateau provided valuable data, their analysis indicated the importance of the moment the plateau is reached as the onset of the secondary formulation, while the tertiary state is still best described by the completion of the film’s drying time. The final part of the in vivo study proved the high in-use substantivity of all samples but confirmed the optimal 4:1 ratio of hydrophobic cationic and hydrophilic polymers, as indicated during early physico-mechanical screening.",
publisher = "MDPI",
journal = "Pharmaceutics",
title = "Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems",
volume = "14",
number = "2",
doi = "10.3390/pharmaceutics14020223"
}
Timotijević, M., Ilić, T., Savić, S.,& Pantelić, I.. (2022). Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems. in Pharmaceutics
MDPI., 14(2).
https://doi.org/10.3390/pharmaceutics14020223
Timotijević M, Ilić T, Savić S, Pantelić I. Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems. in Pharmaceutics. 2022;14(2).
doi:10.3390/pharmaceutics14020223 .
Timotijević, Mirjana, Ilić, Tanja, Savić, Snežana, Pantelić, Ivana, "Simultaneous Physico-Mechanical and In Vivo Assessment towards Factual Skin Performance Profile of Topical Polymeric Film-Forming Systems" in Pharmaceutics, 14, no. 2 (2022),
https://doi.org/10.3390/pharmaceutics14020223 . .
2
1