Evidence map›Paper›PMID 23196771›Full record

ArticlePharmaceutical research2013

Transdermal delivery of molecules is limited by full epidermis, not just stratum corneum.

Samantha N Andrews, Eunhye Jeong, Mark R Prausnitz

Open access · greenAbstract read
In one paragraph

Article in Pharmaceutical research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

80 citing papers in PubMed, 207 citations in OpenAlex.

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20 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Samantha N AndrewsWallace Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA.
Eunhye Jeong
Mark R Prausnitz
Georgia Institute of Technology · US

Funding

Influenza vaccination using a microneedle patchU01EB012495 · NIBIB · GEORGIA INSTITUTE OF TECHNOLOGY · PI PRAUSNITZ, MARK R. · 2010 to 2015
$9.6M
Microneedle-based immunization against pandemic influenzaR01EB006369 · NIBIB · GEORGIA INSTITUTE OF TECHNOLOGY · PI PRAUSNITZ, MARK R. · 2007 to 2011
$3.6M
NIBIB NIH HHS R01 EB006369NIBIB NIH HHS U01 EB012495
6 · The paper itself

Abstract

purposeMost methods to increase transdermal drug delivery focus on increasing stratum corneum permeability, without addressing the need to increase permeability of viable epidermis. Here, we assess the hypothesis that viable epidermis offers a significant permeability barrier that becomes rate limiting upon sufficient permeabilization of stratum corneum.

methodsWe tested this hypothesis by using calibrated microdermabrasion to selectively remove stratum corneum or full epidermis in pig and human skin, and then measuring skin permeability to a small molecule (sulforhodamine) and macromolecules (bovine serum albumin, insulin, inactivated influenza vaccine) in vitro.

resultsWe found that removal of stratum corneum dramatically increased skin permeability to all compounds tested. However, removal of full epidermis increased skin permeability by another 1-2 orders of magnitude. We also studied the effects of removing skin tissue only from localized spots on the skin surface by covering skin with a mask containing 125-μm holes during tissue removal. Skin permeabilized in this less-invasive way showed similar results. This suggests that microdermabrasion of skin using a mask may provide an effective way to increase skin permeability.

conclusionsWe conclude that viable epidermis offers a significant permeability barrier that becomes rate limiting upon removal of stratum corneum.

Indexed as

Skin AbsorptionAdministration, CutaneousAnimalsDermabrasionEpidermisHumansInfluenza VaccinesInsulinRhodaminesSerum Albumin, BovineSwineInfluenza VaccinesInsulinlissamine rhodamine BRhodaminesSerum Albumin, Bovine

Identifiers

PMID23196771
PMCPMC3596453
OpenAlexW2126777024

What OpenQuestion holds

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LicenceTDM
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.