Evidence map›Paper›PMID 19009336›Full record

ArticlePharmaceutical research2009

Dimethylamino acid esters as biodegradable and reversible transdermal permeation enhancers: effects of linking chain length, chirality and polyfluorination.

Jakub Novotný, Petra Kovaríková, Michal Novotný, Barbora Janůsová, Alexandr Hrabálek, Katerina Vávrová

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

9 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Transdermal Drug Delivery Systems and Their Use in Obesity Treatment.International journal of molecular sciences · 2021
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. 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

6 authors at 1 institution in 1 country.

Jakub NovotnýCentre for New Antivirals and Antineoplastics, Department of Inorganic and Organic Chemistry, Faculty of Pharmacy Hradec Králové, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic.
Petra Kovaríková
Michal Novotný
Barbora Janůsová
Alexandr Hrabálek
Katerina Vávrová
Charles University · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSeries of N,N-dimethylamino acid esters was synthesized to study their transdermal permeation-enhancing potency, biodegradability and reversibility of action. Effects of chirality, linking chain length and polyfluorination were investigated. MATERIALS AND

methodsIn vitro activities were evaluated using porcine skin and four model drugs-theophylline, hydrocortisone, adefovir and indomethacin. Biodegradability was determined using porcine esterase, reversibility was measured using electrical resistance.

resultsNo differences in activity were found between (R), (S) and racemic dodecyl 2-(dimethylamino)propanoate (DDAIP). Substitution of hydrocarbon tail by fluorocarbon one resulted in loss of activity. Replacement of branched linking chain between nitrogen and ester of DDAIP by linear one markedly improved penetration-enhancing activity with optimum in 4-6C acid derivatives. Dodecyl 6-(dimethylamino)hexanoate (DDAK) was more potent than clinically used skin absorption enhancer DDAIP for theophylline (enhancement ratio of DDAK and DDAIP was 17.3 and 5.9, respectively), hydrocortisone (43.2 and 11.5) and adefovir (13.6 and 2.8), while DDAIP was better enhancer for indomethacin (8.7 and 22.8). DDAK was rapidly metabolized by porcine esterase, and displayed low acute toxicity. Electrical resistance of DDAK-treated skin barrier promptly recovered to control values.

conclusionDDAK, highly effective, broad-spectrum, biodegradable and reversible transdermal permeation enhancer, is promising candidate for future research.

Indexed as

AdenineAdministration, CutaneousAlanineAnimalsCaproatesChemistry, PharmaceuticalDimethylaminesDodecanolDrug CarriersDrug CompoundingDrug StabilityElectric ImpedanceEsterasesHalogenationHydrocortisoneHydrolysisadefovirAdenineAlanineCaproatesDimethylaminesDodecanoldodecyl 2-(N,N-dimethylamino)propionatedodecyl 6-(dimethylamino)hexanoateDrug CarriersEsterasesHydrocortisoneIndomethacinMethylaminesOrganophosphonatesTheophylline

Identifiers

PMID19009336
OpenAlexW1980470856

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.