Evidence map›Paper›PMID 32856172›Full record

ArticlePharmaceutical research2020

Two-Photon Polymerisation 3D Printing of Microneedle Array Templates with Versatile Designs: Application in the Development of Polymeric Drug Delivery Systems.

Ana Sara Cordeiro, Ismaiel A Tekko, Mohamed H Jomaa, Lalitkumar Vora, Emma McAlister, Fabiana Volpe-Zanutto, Matthew Nethery, Paul T Baine, Neil Mitchell, David W McNeill and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Pharmaceutical research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
7.4field-weighted citation impact, top 1% 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

54 citing papers in PubMed, 159 citations in OpenAlex.

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  17. 3D printed microneedles: revamping transdermal drug delivery systems.Drug delivery and translational research · 2025
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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

11 authors at 2 institutions in 2 countries.

Ana Sara CordeiroSchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Ismaiel A TekkoSchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Mohamed H JomaaSchool of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, UK.
Lalitkumar VoraSchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Emma McAlisterSchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Fabiana Volpe-ZanuttoSchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Matthew NetherySchool of Pharmacy, Queen's University Belfast, Belfast, UK.
Paul T BaineSchool of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, UK.
Neil MitchellSchool of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, UK.
David W McNeillSchool of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, UK.
Ryan F DonnellySchool of Pharmacy, Queen's University Belfast, Belfast, UK. r.donnelly@qub.ac.uk.ORCID http://orcid.org/0000-0002-0766-4147
Queen's University Belfast · GBUniversity of Aleppo · SY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo apply a simple and flexible manufacturing technique, two-photon polymerisation (2PP), to the fabrication of microneedle (MN) array templates with high precision and low cost in a short time.

methodsSeven different MN array templates were produced by 2PP 3D printing, varying needle height (900-1300 μm), shape (conical, pyramidal, cross-shaped and with pedestal), base width (300-500 μm) and interspacing (100-500 μm). Silicone MN array moulds were fabricated from these templates and used to produce dissolving and hydrogel-forming MN arrays. These polymeric MN arrays were evaluated for their insertion in skin models and their ability to deliver model drugs (cabotegravir sodium and ibuprofen sodium) to viable layers of the skin (ex vivo and in vitro) for subsequent controlled release and/or absorption.

resultsThe various templates obtained with 2PP 3D printing allowed the reproducible fabrication of multiple MN array moulds. The polymeric MN arrays produced were efficiently inserted into two different skin models, with sharp conical and pyramidal needles showing the highest insertion depth values (64-90% of needle height). These results correlated generally with ex vivo and in vitro drug delivery results, where the same designs showed higher drug delivery rates after 24 h of application.

conclusionThis work highlights the benefits of using 2PP 3D printing to prototype variable MN array designs in a simple and reproducible manner, for their application in drug delivery.

Indexed as

Administration, CutaneousAnimalsDrug Delivery SystemsHydrogelsMicroinjectionsModels, BiologicalNeedlesPolymerizationPolymersPrinting, Three-DimensionalSkinSwineHydrogelsPolymers3D printingdissolvinghydrogel-formingmicroneedle arraytwo-photon polymerisation

Identifiers

PMID32856172
PMCPMC7452932
OpenAlexW3082455013

What OpenQuestion holds

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LicenceCC BY
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.