Evidence map›Paper›PMID 21833791›Full record

ArticlePharmaceutical research2011

Gold nanoparticle penetration and reduced metabolism in human skin by toluene.

Hagar I Labouta, David C Liu, Lynlee L Lin, Margaret K Butler, Jeffrey E Grice, Anthony P Raphael, Tobias Kraus, Labiba K El-Khordagui, H Peter Soyer, Michael S Roberts and 2 more

Abstract read
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Article
  6. Nanocarriers for Skin Applications: Where Do We Stand?Angewandte Chemie (International ed. in English) · 2022
    Review
  7. Article
  8. Article
  9. Using elongated microparticles to enhance tailorable nanoemulsion delivery in excised human skin and volunteers.Journal of controlled release : official journal of the Controlled Release Society · 2018
    Article
  10. Article
  11. Article
  12. Review
  13. [Multiphoton tomography].Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete · 2015
    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

12 authors.

Hagar I LaboutaDepartment of Pharmaceutical Nanotechnology, Saarland University, Saarbrücken, Germany.
David C Liu
Lynlee L Lin
Margaret K Butler
Jeffrey E Grice
Anthony P Raphael
Tobias Kraus
Labiba K El-Khordagui
H Peter Soyer
Michael S Roberts
Marc Schneider
Tarl W Prow

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo measure penetration and metabolic effects of ion-stabilized, polar, 15 nm gold nanoparticles in aqueous solution (AuNP-Aq) and sterically stabilized, non-polar, 6 nm gold nanoparticles in toluene (AuNP-TOL) on excised human skin.

methodsGold nanoparticles were characterized with dynamic light scattering and transmission electron microscopy (TEM). Skin penetration studies were done on frozen or fresh excised skin using static Franz diffusion cells. Viable treated skin was assessed by dermoscopy, reflectance confocal microscopy (RCM), multiphoton tomography (MPT) with fluorescence lifetime imaging microscopy (FLIM), and TEM.

resultsDermoscopy and RCM showed large aggregates in the furrows of AuNP-Aq-treated skin. Treatment of thawed and viable skin only showed enhanced permeability to nanoparticles in the AuNP-TOL group with MPT and FLIM imaging to stratum spinosum of epidermis. TEM analysis revealed gold nanoparticles within AuNP-treated stratum corneum. FLIM analysis of NAD(P)H showed a significant decrease in total NAD(P)H in all toluene-treated groups.

conclusionsGold nanoparticles, 15 nm, in aqueous solution aggregated on the skin surface. Toluene treatment eliminated skin metabolism; skin treated with toluene/gold nanoparticles (6 nm) for 24 h, but not at 4 h, showed increased nanoparticle permeability. These results are of value to nanotoxicology.

Indexed as

Skin AbsorptionAdministration, CutaneousDrug CompoundingDrug Delivery SystemsDrug Evaluation, PreclinicalEpidermisGoldHumansMetal NanoparticlesNADPParticle SizePermeabilitySkinSolventsTolueneGoldNADPSolventsToluene

Identifiers

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.