Evidence map›Paper›PMID 18311478›Full record

ArticlePharmaceutical research2008

Mechanistic analysis of chemical permeation enhancers for oral drug delivery.

Kathryn Whitehead, Samir Mitragotri

Abstract read
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.3field-weighted citation impact, top 13% of its field
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

21 citing papers in PubMed, 68 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Gastrointestinal Permeation Enhancers Beyond Sodium Caprate and SNAC - What is Coming Next?Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Advances in oral peptide therapeutics.Nature reviews. Drug discovery · 2020
    Review
  10. Article
  11. Non-invasive delivery strategies for biologics.Nature reviews. Drug discovery · 2019
    Review
  12. Impact of SodiumMolecules (Basel, Switzerland) · 2018
    Article
  13. Ionic liquids for addressing unmet needs in healthcare.Bioengineering & translational medicine · 2018
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. DNA vaccines for targeting bacterial infections.Expert review of vaccines · 2010
    Review
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

2 authors at 1 institution in 1 country.

Kathryn WhiteheadDepartment of Chemical Engineering, University of California, Santa Barbara, CA 93106-5080, USA.
Samir Mitragotri
University of California, Santa Barbara · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTraditionally, the oral route cannot be employed for the delivery of macromolecular drugs such as proteins and peptides due, in large part, to limited transport across the epithelial membrane. This particular challenge can potentially be addressed through the use of chemical permeation enhancers, which affect transcellular and/or paracellular transport routes. Although certain permeation enhancers have been proposed for use in oral delivery, potential for application is often unclear when the route of enhancer action is unknown.

methodsA combination of theory and experiments was developed for determining mechanism of enhancer action. The effect of 51 enhancers on Caco-2 cells was studied using TEER, MTT, and LDH assays.

resultsThe mechanistic details of intestinal permeability enhancement were uncovered for a broad set of enhancers in vitro. Understanding gained from enhancer mechanisms enabled the deduction of structure-function relationships for hydrophilic and hydrophobic permeation enhancers as well as the identification of a transcellular enhancer, 0.01% (w/v) palmityldimethyl ammonio propane sulfonate, which enabled the non-cytotoxic intracellular delivery of a model drug.

conclusionsThe results presented here emphasize the importance of understanding enhancer mechanism and uncover a zwitterionic surfactant capable of safely and effectively achieving intraepithelial drug delivery in vitro.

Indexed as

Drug Delivery SystemsAdministration, OralCaco-2 CellsElectric ImpedanceHumansIntestinal AbsorptionL-Lactate DehydrogenasePermeabilityStructure-Activity RelationshipL-Lactate Dehydrogenase

Identifiers

PMID18311478
OpenAlexW2004312574

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.