Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Klaus Kunath"'
Publikováno v:
Drug Development and Industrial Pharmacy. 39:402-412
Along with other options, solid dispersions prepared by spray drying offer the possibility of formulating poorly soluble drugs in a rapidly dissolving format. As a wide range of potential excipients and solvents is available for spray drying, it is u
Publikováno v:
European Journal of Pharmaceutics and Biopharmaceutics. 68:283-288
Several techniques were compared for improving the dissolution of fenofibrate, a poorly soluble drug. Particle size reduction was realized by jet milling (micronization; cogrinding with lactose, polyvinylpyrrolidone or sodium lauryl sulphate) and by
Publikováno v:
European Journal of Pharmaceutics and Biopharmaceutics. 68:330-337
The rate of the dissolution of four poorly soluble drugs (EMD 57033, albendazole, danazol and felodipine) was improved by cogrinding them with various excipients (lactose monohydrate, corn starch, polyvinylpyrrolidone, hydroxypropylmethyl cellulose a
Autor:
Karl Heinz Voigt, Thomas Merdan, Jindrich Kopecek, Thomas Kissel, Holger Petersen, Udo Bakowsky, Klaus Kunath
Publikováno v:
Bioconjugate Chemistry. 16:785-792
The influence of PEGylation on polyplex stability from poly(ethylene imine), PEI, and plasmid DNA was investigated both in vitro and after intravenous administration in mice. Polyplexes were characterized with respect to particle size (dynamic light
Autor:
Ulrich Bickel, Holger Petersen, Thomas Kissel, Klaus Kunath, Dagmar Fischer, Karlheinz Voigt, Anke von Harpe
Publikováno v:
Journal of Controlled Release. 89:113-125
Low-molecular-weight polyethylenimine (LMW-PEI) was synthesized by the acid-catalyzed, ring-opening polymerization of aziridine and compared with commercially available high-molecular-weight PEI (HMW-PEI) of 25 kDa. Molecular weights were determined
Publikováno v:
The Journal of Gene Medicine. 5:588-599
Background Targeting to integrin receptor ανβ3 by RGD peptides seems to be a promising approach for gene delivery to proliferating endothelial cells of tumor metastases. PEGylation of cationic polymers offers a reduction of non-specific binding to
Publikováno v:
Journal of Controlled Release. 88:159-172
Complexes of galactosylated polyethylenimines (gal-PEI) with DNA have been proposed for gene delivery to hepatocytes. We synthesized gal-PEI with a broad range of degrees of substitution (DS) ranging from 3.5 to 31% of all PEI amino groups by reducti
Autor:
Dagmar Fischer, Thomas Kissel, Clive J. Roberts, Petra M. Fechner, Holger Petersen, Snjezana Stolnik, Martyn C. Davies, Alison L. Martin, Klaus Kunath
Publikováno v:
Bioconjugate Chemistry. 13:845-854
For two series of polyethylenimine-graft-poly(ethylene glycol) (PEI-g-PEG) block copolymers, the influence of copolymer structure on DNA complexation was investigated and physicochemical properties of these complexes were compared with the results of
Publikováno v:
Pharmaceutical Research. 19:140-146
Purpose. Critical steps in the subcellular processing of poly(ethylene imine)/nucleic acid complexes, especially endosomal/lysosomal escape, were visualized by using living cell confocal laser scanning microscopy (CSLM) to obtain an insight into thei
Autor:
Klaus Kunath, Holger Petersen, Karlheinz Voigt, Ulrich Bickel, Dagmar Fischer, Anke von Harpe, Thomas Kissel
Publikováno v:
Pharmaceutical Research. 19:810-817
Purpose. To study the relationship between structure of poly(ethylene imine-co-ethylene glycol), PEI-PEG, copolymers and physicochemical properties as well as in vivo behavior of their complexes with NF-κB decoy.