TY  - JOUR
AU  - Dragičević-Curić, Nina
AU  - Winter, Sven
AU  - Krajišnik, Danina
AU  - Stupar, Mirjana
AU  - Milić, Jela
AU  - Graefe, Susanna
AU  - Fahr, Alfred
PY  - 2010
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1386
AB  - Temoporfin (mTHPC) is a potent second-generation synthetic photosensitizer. Topical delivery of mTHPC is of great interest for the photodynamic therapy of psoriasis and superficial skin cancer lesions. The aim of this study was to evaluate the stability of hydrophilic gels containing mTHPC-loaded liposomes. Two different mTHPC-loaded liposome dispersions, composed of 15 % (w/w) nonhydrogenated soybean lecithin of different phosphatidylcholine content, were prepared and incorporated (2:1 w/w) into hydrogels of different carbomer concentrations (1.5, 2.25, and 3%; w/w). Obtained liposomal hydrogels, containing 0.15% (w/w) mTHPC, 10% (w/w) phospholipids, and 0, 0.5, or 1% (w/w) carbomer, were analyzed for flow properties, liposome particle size, and polydispersity index (PDI), pH value, and mTHPC content after their preparation and at predetermined time intervals during 6 months of storage at 4 and 23 degrees C. All hydrogels showed, during the whole period of investigation, adequate characteristics for topical application (i.e., they revealed shear-thinning plastic flow behavior). Rheological parameters, particle size, and PDI of liposomes in hydrogels, mTHPC content, and pH value did not show remarkable changes during the storage of gels, which could make them unacceptable for topical use. The obtained results indicated physical and chemical stability of liposomal gels containing mTHPC during 6 months of storage at both temperatures.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Liposome Research
T1  - Stability evaluation of temoporfin-loaded liposomal gels for topical application
VL  - 20
IS  - 1
SP  - 38
EP  - 48
DO  - 10.3109/08982100903030263
ER  - 

@article{
author = "Dragičević-Curić, Nina and Winter, Sven and Krajišnik, Danina and Stupar, Mirjana and Milić, Jela and Graefe, Susanna and Fahr, Alfred",
year = "2010",
abstract = "Temoporfin (mTHPC) is a potent second-generation synthetic photosensitizer. Topical delivery of mTHPC is of great interest for the photodynamic therapy of psoriasis and superficial skin cancer lesions. The aim of this study was to evaluate the stability of hydrophilic gels containing mTHPC-loaded liposomes. Two different mTHPC-loaded liposome dispersions, composed of 15 % (w/w) nonhydrogenated soybean lecithin of different phosphatidylcholine content, were prepared and incorporated (2:1 w/w) into hydrogels of different carbomer concentrations (1.5, 2.25, and 3%; w/w). Obtained liposomal hydrogels, containing 0.15% (w/w) mTHPC, 10% (w/w) phospholipids, and 0, 0.5, or 1% (w/w) carbomer, were analyzed for flow properties, liposome particle size, and polydispersity index (PDI), pH value, and mTHPC content after their preparation and at predetermined time intervals during 6 months of storage at 4 and 23 degrees C. All hydrogels showed, during the whole period of investigation, adequate characteristics for topical application (i.e., they revealed shear-thinning plastic flow behavior). Rheological parameters, particle size, and PDI of liposomes in hydrogels, mTHPC content, and pH value did not show remarkable changes during the storage of gels, which could make them unacceptable for topical use. The obtained results indicated physical and chemical stability of liposomal gels containing mTHPC during 6 months of storage at both temperatures.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Liposome Research",
title = "Stability evaluation of temoporfin-loaded liposomal gels for topical application",
volume = "20",
number = "1",
pages = "38-48",
doi = "10.3109/08982100903030263"
}

Dragičević-Curić, N., Winter, S., Krajišnik, D., Stupar, M., Milić, J., Graefe, S.,& Fahr, A.. (2010). Stability evaluation of temoporfin-loaded liposomal gels for topical application. in Journal of Liposome Research
Taylor & Francis Ltd, Abingdon., 20(1), 38-48.
https://doi.org/10.3109/08982100903030263

Dragičević-Curić N, Winter S, Krajišnik D, Stupar M, Milić J, Graefe S, Fahr A. Stability evaluation of temoporfin-loaded liposomal gels for topical application. in Journal of Liposome Research. 2010;20(1):38-48.
doi:10.3109/08982100903030263 .

Dragičević-Curić, Nina, Winter, Sven, Krajišnik, Danina, Stupar, Mirjana, Milić, Jela, Graefe, Susanna, Fahr, Alfred, "Stability evaluation of temoporfin-loaded liposomal gels for topical application" in Journal of Liposome Research, 20, no. 1 (2010):38-48,
https://doi.org/10.3109/08982100903030263 . .

TY  - JOUR
AU  - Dragičević-Curić, Nina
AU  - Winter, Sven
AU  - Stupar, Mirjana
AU  - Milić, Jela
AU  - Krajišnik, Danina
AU  - Gitter, Burkhard
AU  - Fahr, Alfred
PY  - 2009
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1231
AB  - Temoporfin (mTHPC) is a potent second-generation photosensitizer. The primary object of this study was to develop a topical mTHPC-loaded liposomal hydrogel able to deliver mTHPC into the stratum corneum (SC) and deeper skin layers. This study was conducted (1) to determine the effect of carbomer concentration, used as a gelling agent, and the effect of phosphatidylcholine (PC) content of lecithin, used for the liposome preparation. on viscoelastic properties and viscosity of liposomal gels and (2) to determine the relationship between theological properties of gels and the skin penetration of mTHPC. Liposomal hydrogels revealed plastic flow behaviour. The increase of carbomer concentration induced a domination of elastic over viscous behaviour of gels. There was an inverse relationship between the elasticity of gels and mTHPC-penetration. Viscosity also increased with the increment of carbomer concentration, reducing the mTHPC-penetration. Liposomal gels containing lecithin of smaller PC-content (i.e. smaller purity) exhibited a more elastic solid behaviour than gels containing lecithin with high PC-content, and showed smaller mTHPC-penetration. The gel containing 0.75%, w/w, carbomer and lecithin with high PC-content was considered to be the optimal formulation, since it delivered high amounts of mTHPC to the SC and deeper skin layers, and it possessed desirable theological properties.
PB  - Elsevier Science BV, Amsterdam
T2  - International Journal of Pharmaceutics
T1  - Temoporfin-loaded liposomal gels: Viscoelastic properties and in vitro skin penetration
VL  - 373
IS  - 1-2
SP  - 77
EP  - 84
DO  - 10.1016/j.ijpharm.2009.02.010
ER  - 

@article{
author = "Dragičević-Curić, Nina and Winter, Sven and Stupar, Mirjana and Milić, Jela and Krajišnik, Danina and Gitter, Burkhard and Fahr, Alfred",
year = "2009",
abstract = "Temoporfin (mTHPC) is a potent second-generation photosensitizer. The primary object of this study was to develop a topical mTHPC-loaded liposomal hydrogel able to deliver mTHPC into the stratum corneum (SC) and deeper skin layers. This study was conducted (1) to determine the effect of carbomer concentration, used as a gelling agent, and the effect of phosphatidylcholine (PC) content of lecithin, used for the liposome preparation. on viscoelastic properties and viscosity of liposomal gels and (2) to determine the relationship between theological properties of gels and the skin penetration of mTHPC. Liposomal hydrogels revealed plastic flow behaviour. The increase of carbomer concentration induced a domination of elastic over viscous behaviour of gels. There was an inverse relationship between the elasticity of gels and mTHPC-penetration. Viscosity also increased with the increment of carbomer concentration, reducing the mTHPC-penetration. Liposomal gels containing lecithin of smaller PC-content (i.e. smaller purity) exhibited a more elastic solid behaviour than gels containing lecithin with high PC-content, and showed smaller mTHPC-penetration. The gel containing 0.75%, w/w, carbomer and lecithin with high PC-content was considered to be the optimal formulation, since it delivered high amounts of mTHPC to the SC and deeper skin layers, and it possessed desirable theological properties.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "International Journal of Pharmaceutics",
title = "Temoporfin-loaded liposomal gels: Viscoelastic properties and in vitro skin penetration",
volume = "373",
number = "1-2",
pages = "77-84",
doi = "10.1016/j.ijpharm.2009.02.010"
}

Dragičević-Curić, N., Winter, S., Stupar, M., Milić, J., Krajišnik, D., Gitter, B.,& Fahr, A.. (2009). Temoporfin-loaded liposomal gels: Viscoelastic properties and in vitro skin penetration. in International Journal of Pharmaceutics
Elsevier Science BV, Amsterdam., 373(1-2), 77-84.
https://doi.org/10.1016/j.ijpharm.2009.02.010

Dragičević-Curić N, Winter S, Stupar M, Milić J, Krajišnik D, Gitter B, Fahr A. Temoporfin-loaded liposomal gels: Viscoelastic properties and in vitro skin penetration. in International Journal of Pharmaceutics. 2009;373(1-2):77-84.
doi:10.1016/j.ijpharm.2009.02.010 .

Dragičević-Curić, Nina, Winter, Sven, Stupar, Mirjana, Milić, Jela, Krajišnik, Danina, Gitter, Burkhard, Fahr, Alfred, "Temoporfin-loaded liposomal gels: Viscoelastic properties and in vitro skin penetration" in International Journal of Pharmaceutics, 373, no. 1-2 (2009):77-84,
https://doi.org/10.1016/j.ijpharm.2009.02.010 . .

TY  - JOUR
AU  - Dragičević-Curić, Nina
AU  - Stupar, Mirjana
AU  - Milić, J.
AU  - Zorić, T
AU  - Krajišnik, Danina
AU  - Vasiljević, D
PY  - 2005
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/574
AB  - The aim of this study was to develop and characterize hydrophilic gels containing chlorophyllin(CHL)loaded liposomes as well as to evaluate their stability. Two different CHL-loaded liposome dispersions using non-hydrogenated and hydrogenated soybean lecithin were prepared, characterized for their particle size, polydispersity index and trapping efficiency and incorporated in Carbopol(R) 940 NF hydrogel. The gels obtained were analyzed for flow properties, pH values and CHL content. The control liposome-free gel was obtained by incorporating the CHL solution in the hydrogel. The stability of the gels was evaluated in terms of rheological properties, pH values and CHL content during 6 months' storage at 20 +/- 2 degrees C. Suitable gel formulations for topical use were obtained revealing shear-thinning plastic flow behaviour without significant thixotropy during the whole period of examination. High yield values of the samples during the whole period indicated a long-term stability of the gel formulations. The gel formulations expressed a mild acid value acceptable for topical preparations. After 6 months' storage the CHL content was highest in the gel containing non-hydrogenated lecithin liposomes, followed by the gel containing hydrogenated lecithin liposomes and liposome-free gel, indicating that the encapsulation of CHL in liposomes led to a greater stability of CHL.
PB  - Govi-Verlag  Pharmazeutischer Verlag Gmbh, Eschborn
T2  - Pharmazie
T1  - Hydrophilic gels containing chlorophyllin-loaded liposomes: development and stability evaluation
VL  - 60
IS  - 8
SP  - 588
EP  - 592
UR  - https://hdl.handle.net/21.15107/rcub_farfar_574
ER  - 

@article{
author = "Dragičević-Curić, Nina and Stupar, Mirjana and Milić, J. and Zorić, T and Krajišnik, Danina and Vasiljević, D",
year = "2005",
abstract = "The aim of this study was to develop and characterize hydrophilic gels containing chlorophyllin(CHL)loaded liposomes as well as to evaluate their stability. Two different CHL-loaded liposome dispersions using non-hydrogenated and hydrogenated soybean lecithin were prepared, characterized for their particle size, polydispersity index and trapping efficiency and incorporated in Carbopol(R) 940 NF hydrogel. The gels obtained were analyzed for flow properties, pH values and CHL content. The control liposome-free gel was obtained by incorporating the CHL solution in the hydrogel. The stability of the gels was evaluated in terms of rheological properties, pH values and CHL content during 6 months' storage at 20 +/- 2 degrees C. Suitable gel formulations for topical use were obtained revealing shear-thinning plastic flow behaviour without significant thixotropy during the whole period of examination. High yield values of the samples during the whole period indicated a long-term stability of the gel formulations. The gel formulations expressed a mild acid value acceptable for topical preparations. After 6 months' storage the CHL content was highest in the gel containing non-hydrogenated lecithin liposomes, followed by the gel containing hydrogenated lecithin liposomes and liposome-free gel, indicating that the encapsulation of CHL in liposomes led to a greater stability of CHL.",
publisher = "Govi-Verlag  Pharmazeutischer Verlag Gmbh, Eschborn",
journal = "Pharmazie",
title = "Hydrophilic gels containing chlorophyllin-loaded liposomes: development and stability evaluation",
volume = "60",
number = "8",
pages = "588-592",
url = "https://hdl.handle.net/21.15107/rcub_farfar_574"
}

Dragičević-Curić, N., Stupar, M., Milić, J., Zorić, T., Krajišnik, D.,& Vasiljević, D.. (2005). Hydrophilic gels containing chlorophyllin-loaded liposomes: development and stability evaluation. in Pharmazie
Govi-Verlag  Pharmazeutischer Verlag Gmbh, Eschborn., 60(8), 588-592.
https://hdl.handle.net/21.15107/rcub_farfar_574

Dragičević-Curić N, Stupar M, Milić J, Zorić T, Krajišnik D, Vasiljević D. Hydrophilic gels containing chlorophyllin-loaded liposomes: development and stability evaluation. in Pharmazie. 2005;60(8):588-592.
https://hdl.handle.net/21.15107/rcub_farfar_574 .

Dragičević-Curić, Nina, Stupar, Mirjana, Milić, J., Zorić, T, Krajišnik, Danina, Vasiljević, D, "Hydrophilic gels containing chlorophyllin-loaded liposomes: development and stability evaluation" in Pharmazie, 60, no. 8 (2005):588-592,
https://hdl.handle.net/21.15107/rcub_farfar_574 .