Evidence map›Paper›PMID 33037282›Full record

ArticleScientific reports2020

A porous collagen-based hydrogel and implantation method for corneal stromal regeneration and sustained local drug delivery.

Maria Xeroudaki, Muthukumar Thangavelu, Anton Lennikov, Anjula Ratnayake, Jovana Bisevac, Goran Petrovski, Per Fagerholm, Mehrdad Rafat, Neil Lagali

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
4.5field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 78 citations in OpenAlex.

  1. Review
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  7. Collagen from Marine Sources for Potential Application in Wound Treatment.Progress in molecular and subcellular biology · 2026
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  9. Recent Advances in Silk Fibroin Derived fromJournal of functional biomaterials · 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

9 authors at 3 institutions in 2 countries.

Maria XeroudakiDepartment of Ophthalmology, Institute for Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden.
Muthukumar ThangaveluDepartment of Ophthalmology, Institute for Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden.
Anton LennikovDepartment of Ophthalmology, Institute for Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden.
Anjula RatnayakeLinkoCare Life Sciences AB, 58330, Linköping, Sweden.
Jovana BisevacDepartment of Ophthalmology, Centre for Eye Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
Goran PetrovskiDepartment of Ophthalmology, Centre for Eye Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
Per FagerholmDepartment of Ophthalmology, Institute for Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden.
Mehrdad Rafat *Department of Biomedical Engineering, Linköping University, 58185, Linköping, Sweden. mehrdad.rafat@liu.se.
Neil Lagali *Department of Ophthalmology, Institute for Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden. neil.lagali@liu.se.
Linköping University · SEOslo University Hospital · NOSørlandet Hospital Arendal · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Biomaterials designed to replace the diseased cornea could be used to treat corneal blindness where human donor tissue is in short supply, but challenges are the integration of biomaterials with host tissue and cells, avoiding a rapid material degradation and maintaining corneal transparency. Additionally, implantation surgery often triggers an aggressive wound healing response that can lead to corneal thinning and opacity. Here, we report a collagen-based hydrogel with transparency and mechanical properties suitable for replacing a substantial portion of a damaged or diseased corneal stroma. The porous hydrogel permitted migration and population by host cells while maintaining transparency and thickness six months after surgical implantation in an in vivo model of human corneal surgery. With a novel hybrid surgical implantation technique inspired by LASIK refractive surgery, rapid wound healing occurred around implants to maintain biomaterial integrity, transparency and function. Host stromal cell repopulation and regeneration of host epithelium and nerves were observed, as necessary steps towards corneal regeneration. Finally, as a proof-of-principle, the hydrogel loaded with a neuroregenerative drug achieved sustained slow-release drug delivery in vitro. The proposed hydrogel and novel implantation technique together represent a therapeutic approach with translational potential for replacing and regenerating diseased corneal stromal tissue.

Indexed as

AnimalsBiocompatible MaterialsCells, CulturedCollagenCorneal StromaDelayed-Action PreparationsEpithelial CellsEpithelium, CornealHumansHydrogelsMaleNerve RegenerationPorosityRabbitsStromal CellsWound HealingBiocompatible MaterialsCollagenDelayed-Action PreparationsHydrogels

Identifiers

PMID33037282
PMCPMC7547117
OpenAlexW3091805209

What OpenQuestion holds

Textmetadata
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.