The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
Membrane Transport of Drugs in Different Regions of the Intestinal Tract of the Rat
Abstract
Regional permeability coefficients of 19 drugs with different physicochemical properties were determined using excised segments from three regions of rat intestine: jejunum, ileum, and colon. The results are discussed in relation to the characteristics of the drug, i.e., MW (range 113-1071 Da), pKa, log D (octanol/water at pH 7.4) (range -3.1 to +2.4), and the regional change in the properties of the epithelial membrane. There was a significant decrease in permeability to hydrophilic drugs and a significant increase in permeability for hydrophobic drugs aborally to the small intestine (P < 0.0001). A good correlation could be obtained between MW and permeability coefficients of hydrophilic drugs. The correlation established between the apparent permeability coefficients and the partition coefficients of the drugs was sigmoidal in shape in all three regions and a log D between 0 and 2.5 predicts high permeability values. These permeability data are unique since they result from a diversity of chemical structures with different physicochemical characteristics and a variety of transport mechanisms and they are not influenced by interlaboratory differences. The large regional permeability database in the present study shows the utility of the Ussing chamber technique as a valuable predictive tool for human in vivo data. In addition, the regional permeability profiles obtained suggest a coupling between drug structure and the functional changes of the membrane, which might be useful for selecting a compound for an extended release formulation.
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Self-citationCorrelation of Drug Absorption with Molecular Surface Properties
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Cited by
Predicting the Impact of Physiological and Biochemical Processes on Oral Drug Bioavailability
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Physicochemical Profiling (Solubility, Permeability and Charge State)
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Intestinal permeability and its relevance for absorption and elimination
Lennernäs, H. (2007) · Xenobiotica · doi:10.1080/00498250701704819 · Cited by 304
Self-citationDe Buck, S. S., Sinha, V. K., Fenu, L. A., Nijsen, M. J., Mackie, C. E., & Gilissen, R. A. H. J. (2007) · Drug Metabolism and Disposition · doi:10.1124/dmd.107.015644 · Cited by 256
Drug permeability profiling using cell-free permeation tools: overview and applications
Berben, P., Bauer-Brandl, A., Brandl, M., Faller, B., Flaten, G. E., Jacobsen, A.-C., Brouwers, J., & Augustijns, P. (2018) · European Journal of Pharmaceutical Sciences · doi:10.1016/j.ejps.2018.04.016 · Cited by 199
Metadata
- Authors
- Ungell, A.-L., Nylander, S., Bergstrand, S., Sjöberg, Å., & Lennernäs, H.
- Venue
- Journal of Pharmaceutical Sciences
- Publisher
- American Geophysical Union (AGU)
- Published
- 1998-03
- Volume
- 87
- Issue
- 3
- Pages
- 360-366
- ISSN
- 0022-3549 (ISSN-L)
- OpenAlex
- W2140661985
- Cited by
- 257
- References
- 38
- FWCI
- 6.88
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ungell, A.-L., Nylander, S., Bergstrand, S., Sjöberg, Å., & Lennernäs, H. (1998). Membrane Transport of Drugs in Different Regions of the Intestinal Tract of the Rat. Journal of Pharmaceutical Sciences. https://doi.org/10.1021/js970218s
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
