Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Davide Guggi"'
Autor:
Sabbir Khan, Xiao-Long Li, Dimpy Koul, Thomas Mehrling, John DeGroot, Veerakumar Balasubramaniyan, Davide Guggi
Publikováno v:
Neuro-Oncology. 23:vi81-vi81
Glioblastoma (GBM) remains an incurable tumor with median overall survival of 15 months despite radiation and alkylating temozolomide (TMZ) chemotherapy. DNA damage response (DDR) pathways are among the most important key players of oncogenic mutatio
Publikováno v:
International Journal of Pharmaceutics. 307:270-277
The goal of this study was to develop a microparticulate delivery system based on a thiolated chitosan conjugate for the nasal application of peptides. Insulin was used as model peptide. For thiolation of chitosan 2-iminothiolane was covalently linke
Publikováno v:
Advanced Drug Delivery Reviews. 57:1713-1723
In this study the mucoadhesive potential of nineteen different, most often referred mucoadhesive polymers was evaluated and characterized by adhesion time and total work of adhesion (TWA) of the polymer to porcine small intestinal mucosa. In addition
Autor:
Christian W. Huck, Gudrun Schöffmann, Yvonne Pinter, Maria Dorly Del Curto, Mauro D'Antonio, Hermann Kahlbacher, Pierandrea Esposito, Maximilian Schuh, I. Schmerold, Davide Guggi, Andreas Bernkop-Schnürch
Publikováno v:
Journal of Controlled Release. 106:26-33
It was the aim of this study to develop an oral delivery system for the peptide drug antide. The stability of the therapeutic peptide towards gastrointestinal peptidases was evaluated. The therapeutic agent and the permeation mediator glutathione wer
Autor:
Davide Guggi, Andreas Bernkop-Schnürch
Publikováno v:
International Journal of Pharmaceutics. 288:141-150
This study had the purpose to improve the paracellular uptake of drugs by combining the thiomer/reduced glutathione (GSH) permeation-enhancing system with a proteolytic enzyme. Due to the covalent binding of 2-iminothiolane to chitosan the thiomer ch
Publikováno v:
Journal of Controlled Release. 100:87-95
It was the aim of this study to develop and evaluate a nasal microparticulate delivery system for human growth hormone (hGH) based on the thiomer polycarbophil-cysteine (PCP-Cys) in combination with the permeation mediator glutathione (GSH). Micropar
Publikováno v:
International Journal of Pharmaceutics. 278:353-360
d -Glucosamine and chitosan were modified by the immobilization of thiol groups utilizing 2-iminothiolane. The toxicity profile of the resulting d -glucosamine-TBA (4-thiobutylamidine) conjugate, of chitosan-TBA conjugate and of the corresponding unm
Publikováno v:
International Journal of Pharmaceutics. 274:97-105
This study examined the influence of the pH on the mucoadhesive and cohesive properties of polyarcylic acid (PAA) and thiolated PAA. The pH of PAA (molecular mass: 450 kDa) and of a corresponding PAA-cysteine conjugate was adjusted to 3, 4, 5, 6, 7 a
Publikováno v:
Journal of Controlled Release. 95:547-555
It was the aim of this study to develop a delivery system providing an improved efficacy of orally administered insulin utilizing a thiolated polymer. 2-Iminothiolane was covalently linked to chitosan. The resulting chitosan-TBA (chitosan-4-thiobutyl
Publikováno v:
European Journal of Pharmaceutics and Biopharmaceutics. 57:9-17
The derivatization of the primary amino groups of chitosan with coupling reagents bearing thiol functions leads to the formation of thiolated chitosans. So far, three types of thiolated chitosans have been generated: chitosan-cysteine conjugates, chi