Evidence map›Paper›PMID 9688046›Full record

ArticlePharmaceutical research1998

Predicting drug absorption from molecular surface properties based on molecular dynamics simulations.

L H Krarup, I T Christensen, L Hovgaard, S Frokjaer

Abstract read
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Article in Pharmaceutical research, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Article
  2. Molecular dynamics of fibric acids.European journal of chemistry (Print) · 2022
    Article
  3. Review
  4. Review
  5. Article
  6. Review
  7. Testing physical models of passive membrane permeation.Journal of chemical information and modeling · 2012
    Article
  8. Retronasal odor representations in the dorsal olfactory bulb of rats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  9. Article
  10. Biomolecular chemistry of isopropyl fibrates.Journal of pharmaceutical sciences · 2012
    Article
  11. Quantum mechanical polar surface area.Journal of computer-aided molecular design · 2012
    Article
  12. Intestinal lymphatic transport for drug delivery.Advanced drug delivery reviews · 2011
    Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

L H KrarupDepartment of Pharmaceutics, Royal Danish School of Pharmacy, Copenhagen. lhk@mail.dfh.dk
I T Christensen
L Hovgaard
S Frokjaer

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo develop an efficient method for generating representative conformations for calculation of the conformationally dependent molecular surface area, and to investigate the relation between this parameter and the permeability in Caco-2 cells.

methodsHigh temperature molecular dynamics (MD) simulations were used to obtain 1000 conformations of six beta-blocking agents and their prodrugs. The Boltzmann averaged (B.a.) polar surface area of the 1000 conformations was correlated to the apparent permeability coefficients (Papp) for transport across filter-grown Caco-2 cells.

resultsSampling of 1000 conformations during the MD simulations was sufficient for obtaining a representative set of conformations. The B.a. polar water accessible surface area (PWASA) yielded an excellent linear correlation with Papp for both series of compounds under study (R2 = 0.98). Thus, the improved permeability of the prodrugs could be explained by a reduced PWASA. The improvement of permeability after derivatization correlated positively with the size of the non-polar water accessible surface area-suggesting a synergistic effect of the cyclopropyl and the non-polar parts of the molecule to shield the polar parts from contact with water.

conclusionsAn efficient method for generating the representative conformations for calculation of the B.a. polar surface area has been established. An excellent linear correlation explaining the improved permeability of the prodrugs was obtained.

Indexed as

Intestinal AbsorptionAdrenergic beta-AntagonistsCaco-2 CellsCell Membrane PermeabilityChemical PhenomenaChemistry, PhysicalComputer SimulationHot TemperatureHumansModels, ChemicalMolecular ConformationProdrugsStructure-Activity RelationshipSurface PropertiesThermodynamicsAdrenergic beta-AntagonistsProdrugs

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.