The publications of the members of the research group.
2015
Lamberti, Gaetano
How mathematical modeling tools are helping the pharmaceutical sciences Journal Article
In: International Journal of Pharmaceutics, vol. 496, no. 2, pp. 157-158, 2015, ISSN: 0378-5173, (Editorial).
Abstract | Links | BibTeX | Tags: Controlled drug release, Mathematical modeling, Pharmacokinetics
@article{Lamberti2015,
title = {How mathematical modeling tools are helping the pharmaceutical sciences},
author = {Gaetano Lamberti},
url = {http://www.sciencedirect.com/science/article/pii/S0378517315006377},
doi = {10.1016/j.ijpharm.2015.11.003},
issn = {0378-5173},
year = {2015},
date = {2015-12-30},
journal = {International Journal of Pharmaceutics},
volume = {496},
number = {2},
pages = {157-158},
abstract = {No abstract.},
note = {Editorial},
keywords = {Controlled drug release, Mathematical modeling, Pharmacokinetics},
pubstate = {published},
tppubtype = {article}
}
No abstract.
2012
Lamberti, Gaetano; Cascone, Sara; Iannaccone, Margherita; Titomanlio, Giuseppe
In vitro simulation of drug intestinal absorption. Journal Article
In: International journal of pharmaceutics, vol. 439, no. 1-2, pp. 165–8, 2012, ISSN: 1873-3476.
Abstract | Links | BibTeX | Tags: Controlled drug release, In vitro, Intestinal Absorption, Mass balance, Oral administration, Pharmacokinetics, Theophylline
@article{Lamberti2012d,
title = {In vitro simulation of drug intestinal absorption.},
author = { Gaetano Lamberti and Sara Cascone and Margherita Iannaccone and Giuseppe Titomanlio},
url = {http://www.sciencedirect.com/science/article/pii/S0378517312009520},
doi = {10.1016/j.ijpharm.2012.10.012},
issn = {1873-3476},
year = {2012},
date = {2012-12-01},
journal = {International journal of pharmaceutics},
volume = {439},
number = {1-2},
pages = {165--8},
abstract = {In this work, a simple set-up was designed, realized and tested to evaluate the effect of intestinal absorption on the in vitro drug release studies. The conventional USP-approved dissolution apparatus 2 was equipped with an hollow fibers filter, along with the necessary tubing and pumps, to simulate the two-fluids real behavior (the gastro intestinal lumen and the gastro intestinal circulatory system). The realized set-up was characterized in term of mass exchange characteristic, using the theophylline as the model drug, also with the aid of a simple mathematical model; then the release kinetics of a controlled release tablet was evaluated in the conventional test as well as in the novel simulator. The concentration of drug in the release compartment (which simulates the gastric lumen) was found lower in the novel simulator than in the traditional one.},
keywords = {Controlled drug release, In vitro, Intestinal Absorption, Mass balance, Oral administration, Pharmacokinetics, Theophylline},
pubstate = {published},
tppubtype = {article}
}
In this work, a simple set-up was designed, realized and tested to evaluate the effect of intestinal absorption on the in vitro drug release studies. The conventional USP-approved dissolution apparatus 2 was equipped with an hollow fibers filter, along with the necessary tubing and pumps, to simulate the two-fluids real behavior (the gastro intestinal lumen and the gastro intestinal circulatory system). The realized set-up was characterized in term of mass exchange characteristic, using the theophylline as the model drug, also with the aid of a simple mathematical model; then the release kinetics of a controlled release tablet was evaluated in the conventional test as well as in the novel simulator. The concentration of drug in the release compartment (which simulates the gastric lumen) was found lower in the novel simulator than in the traditional one.
2007
Chirico, Serafina; Dalmoro, Annalisa; Lamberti, Gaetano; Russo, Giuseppina; Titomanlio, Giuseppe
Analysis and modeling of swelling and erosion behavior for pure HPMC tablet Journal Article
In: Journal of Controlled Release, vol. 122, no. 2, pp. 181–188, 2007, ISSN: 01683659.
Abstract | Links | BibTeX | Tags: Controlled drug release, Erosion, HPMC, Hydrogel Characterization, Hydrogel Modeling, Swelling
@article{Chirico2007,
title = {Analysis and modeling of swelling and erosion behavior for pure HPMC tablet},
author = { Serafina Chirico and Annalisa Dalmoro and Gaetano Lamberti and Giuseppina Russo and Giuseppe Titomanlio},
url = {http://www.sciencedirect.com/science/article/pii/S0168365907003215},
doi = {10.1016/j.jconrel.2007.07.001},
issn = {01683659},
year = {2007},
date = {2007-09-01},
journal = {Journal of Controlled Release},
volume = {122},
number = {2},
pages = {181--188},
abstract = {This work is focused on the transport phenomena which take place during immersion in water of pure hydroxypropylmethylcellulose tablets. The water uptake, the swelling and the erosion during immersion were investigated in drug-free systems, as a preliminary task before to undertake the study of drug-loaded ones. The tablets, obtained by powder compression, were confined between glass slabs to allow water uptake only by lateral surface and then immersed in distilled water at 37 °C, with simultaneous video-recording. By image analysis the normalized light intensity profiles were obtained and taken as a measure of the water mass fraction. The time evolutions of the total tablet mass, of the water mass and of the erosion radius were measured, too. Thus a novel method to measure polymer and water masses during hydration was pointed out. Then, a model consisting in the transient mass balance, accounting for water diffusion, diffusivity change due to hydration, swelling and erosion, was found able to reproduce all experimental data. Even if the model was already used in literature, the novelty of our approach is to compare model predictions with a complete set of experimental data, confirming that the main phenomena were correctly identified and described.},
keywords = {Controlled drug release, Erosion, HPMC, Hydrogel Characterization, Hydrogel Modeling, Swelling},
pubstate = {published},
tppubtype = {article}
}
This work is focused on the transport phenomena which take place during immersion in water of pure hydroxypropylmethylcellulose tablets. The water uptake, the swelling and the erosion during immersion were investigated in drug-free systems, as a preliminary task before to undertake the study of drug-loaded ones. The tablets, obtained by powder compression, were confined between glass slabs to allow water uptake only by lateral surface and then immersed in distilled water at 37 °C, with simultaneous video-recording. By image analysis the normalized light intensity profiles were obtained and taken as a measure of the water mass fraction. The time evolutions of the total tablet mass, of the water mass and of the erosion radius were measured, too. Thus a novel method to measure polymer and water masses during hydration was pointed out. Then, a model consisting in the transient mass balance, accounting for water diffusion, diffusivity change due to hydration, swelling and erosion, was found able to reproduce all experimental data. Even if the model was already used in literature, the novelty of our approach is to compare model predictions with a complete set of experimental data, confirming that the main phenomena were correctly identified and described.