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Cho CW, Preiss U, Jungnickel C, Stolte S, Arning J, Ranke J, Klamt A, Krossing I, Thöming J. Ionic Liquids: Predictions of Physicochemical Properties with Experimental and/or DFT-Calculated LFER Parameters To Understand Molecular Interactions in Solution. J Phys Chem B 2011; 115:6040-50. [DOI: 10.1021/jp200042f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chul-Woong Cho
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
- Freiburger Materialforschungszentrum FMF, University of Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany
| | - Ulrich Preiss
- Freiburger Materialforschungszentrum FMF, University of Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany
| | - Christian Jungnickel
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
- Chemical Faculty, Gdańsk University of Technology, ulica Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Stefan Stolte
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
| | - Jürgen Arning
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
| | - Johannes Ranke
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
| | - Andreas Klamt
- COSMOlogic GmbH & Co. KG, Burscheider Strasse 515, 51381 Leverkusen, Germany
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, 93040 Regensburg, Germany
| | - Ingo Krossing
- Freiburger Materialforschungszentrum FMF, University of Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany
- Institut für Anorganische und Analytische Chemie and FRIAS Section Soft Matter Science, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | - Jorg Thöming
- Zentrum für Umweltforschung und nachhaltige Technologien (UFT) (Center for Environmental Research and Technology), University of Bremen, Leobener Strasse, 28359 Bremen, Germany
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Nanoparticulate strategies for effective delivery of poorly soluble therapeutics. Ther Deliv 2010; 1:149-67. [DOI: 10.4155/tde.10.4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The pharmacological activity of a drug molecule depends on its ability to dissolve and interact with its biological target, either through dissolution and absorption, or through dissolution and receptor interaction. The low bioavailability that characterizes poorly water-soluble drugs is usually attributed to the dissolution kinetic profile. Novel strategies to effectively deliver these drugs include nanoparticulate approaches that either increase the surface area of the drug or improve the solubility characteristics of the drug. Nanosizing approaches are based on the production of drug nanocrytals dispersed in an aqueous surfactant solution, whereas other possibilities include drug loading in nanoparticles. Promising nanoparticulate approaches include the development of lipid-based nanocarriers to increase drug solubility followed by enhanced bioavailability. To select the best approach there are, however, some critical considerations to take into account, for example the physicochemical properties of the drug, the possibility to scale-up the production process, the toxicological considerations of the use of solvents and cosolvents, the selection of an environmentally sustainable methodology and the development of a more patient-friendly dosage form. This article addresses these relevant questions and provides feasible examples of novel strategies with respect to relevant administration routes.
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Selvi B, Patel S, Savva M. Physicochemical Characterization and Membrane Binding Properties of Camptothecin. J Pharm Sci 2008; 97:4379-90. [DOI: 10.1002/jps.21314] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Prankerd R, McKeown R. Physico-chemical properties of barbituric acid derivatives: IV. Solubilities of 5,5-disubstituted barbituric acids in water. Int J Pharm 1994. [DOI: 10.1016/0378-5173(94)90256-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Anliker R, Moser P. The limits of bioaccumulation of organic pigments in fish: their relation to the partition coefficient and the solubility in water and octanol. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 1987; 13:43-52. [PMID: 3830021 DOI: 10.1016/0147-6513(87)90041-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
A reliable experimental determination of the partition coefficient Pow of organic pigments is met with serious difficulties due to the extremely low water solubilities of these compounds. Therefore, the Pow values and the water solubilities were calculated for 11 typical organic pigments and some disperse dyes as well. The calculated Pow values of the pigments were very high predicting bioaccumulation factors (BF) several orders of magnitude above 100. Based on recent studies confirming that n-octanol simulates lipids in their solubilizing effect on organic chemicals, the solubilities of these organic pigments in n-octanol were measured in order to estimate their potential for lipid storage. The very low solubility values indicate that in spite of the very high predicted BF such pigments cannot build up concentrations in lipids (hence in fish) which could be of concern considering their generally low toxicity and the extremely small amounts entering the environment. Therefore, there should be no need to perform a fish bioaccumulation test for assessing the bioaccumulation potential of such compounds, provided they show comparable solubility characteristics as the pigments investigated in this study.
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