Evidence map›Paper›PMID 39753909›Full record

ArticleAAPS PharmSciTech2025

Multi-Layered Microneedles Loaded with Microspheres.

Andrew R Tadros, Xin Dong Guo, Mark R Prausnitz

Abstract read
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In one paragraph

Article in AAPS PharmSciTech, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

  1. Article
  2. 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

3 authors.

Andrew R Tadros *School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia, 30332-0100, U.S.A.ORCID http://orcid.org/0000-0003-3953-9292
Xin Dong Guo *School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia, 30332-0100, U.S.A.
Mark R PrausnitzSchool of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia, 30332-0100, U.S.A.. prausnitz@gatech.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Delivery of therapies into skin is attractive for medical indications including vaccination and treatment of dermatoses but is highly constrained by the stratum corneum barrier. Microneedle (MN) patches have emerged as a promising technology to enable non-invasive, intuitive, and low-cost skin delivery. When combined with biodegradable polymer formulations, MN patches can further enable controlled-release drug delivery without injection. Herein, we sought to expand on the capability of MN patches to deliver therapies into skin by providing improved spatiotemporal control. Polylactic-co-glycolic acid (PLGA) microspheres were used to encapsulate model dye and then loaded into MN patches through a layer-by-layer fabrication method that created multiple layers of different composition within each MN. MN patches were loaded with up to 5 μg/MN of PLGA microspheres. Mechanical testing demonstrated that mechanical strength of MNs decreased with increasing number of microsphere layers. Microsphere-loaded MN patches inserted into porcine skin ex vivo and murine skin in vivo fully dissolved within 15 min, administering drug-loaded microspheres for controlled release lasting over 45 days. These data support the feasibility of multi-layered, microsphere-loaded MN patches designed for spatially targeted and sustained delivery of therapies into skin.

Indexed as

Drug Delivery SystemsMicrospheresNeedlesPolylactic Acid-Polyglycolic Acid CopolymerSkinAdministration, CutaneousAnimalsDelayed-Action PreparationsLactic AcidMiceMicroinjectionsPolyglycolic AcidSwineDelayed-Action PreparationsLactic AcidPolyglycolic AcidPolylactic Acid-Polyglycolic Acid Copolymercontrolled releasedermatologymicroneedle patchPLGA microspherepolylactic-co-glycolic acidskintransdermal drug delivery

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.