Evidence map›Paper›PMID 33415670›Full record

ArticleTissue engineering and regenerative medicine2021

Human Dental Pulp Stem Cells (DPSCs) Therapy in Rescuing Photoreceptors and Establishing a Sodium Iodate-Induced Retinal Degeneration Rat Model.

Chenshen Lam, Hiba Amer Alsaeedi, Avin Ee-Hwan Koh, Mohd Hairul Nizam Harun, Angela Ng Min Hwei, Pooi Ling Mok, Chi D Luu, Then Kong Yong, Suresh Kumar Subbiah, Mae-Lynn Catherine Bastion

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering and regenerative medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 18 citations in OpenAlex.

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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

10 authors at 4 institutions in 4 countries.

Chenshen LamFaculty of Medicine, Department of Ophthalmology, UKM Medical Centre, 56000, Cheras, Kuala Lumpur, Malaysia.
Hiba Amer AlsaeediDepartment of Medical Microbiology and Parasitology, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Avin Ee-Hwan KohDepartment of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Mohd Hairul Nizam HarunFaculty of Medicine, Department of Ophthalmology, UKM Medical Centre, 56000, Cheras, Kuala Lumpur, Malaysia.
Angela Ng Min HweiTissue Engineering Centre, UKM Medical Centre, 56000, Cheras, Kuala Lumpur, Malaysia.
Pooi Ling MokDepartment of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Chi D LuuCentre for Eye Research Australia, Royal Victorian Eye & Ear Hospital, Melbourne, 3002, Australia.
Then Kong YongBrighton Healthcare Suite G-2, Ground Floor, Bio X Centre, Persiaran Cyberpoint Selatan, Cyber 8, 63000, Cyberjaya, Malaysia.
Suresh Kumar SubbiahDepartment of Medical Microbiology and Parasitology, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Mae-Lynn Catherine BastionFaculty of Medicine, Department of Ophthalmology, UKM Medical Centre, 56000, Cheras, Kuala Lumpur, Malaysia. mae-lynn@ppukm.ukm.edu.my.ORCID 0000-0002-6856-8052
Universiti Putra Malaysia · MYUniversity Kebangsaan Malaysia Medical Centre · MYThe University of Melbourne · AUUniversity of Cyberjaya · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDifferent methods have been used to inject stem cells into the eye for research. We previously explored the intravitreal route. Here, we investigate the efficacy of intravenous and subretinal-transplanted human dental pulp stem cells (DPSCs) in rescuing the photoreceptors of a sodium iodate-induced retinal degeneration model.

methodsThree groups of Sprague Dawley rats were used: intervention, vehicle group and negative control groups (n = 6 in each). Intravenous injection of 60 mg/kg sodium iodate (day 0) induced retinal degeneration. On day 4 post-injection of sodium iodate, the rats in the intervention group received intravenous DPSC and subretinal DPSC in the right eye; rats in the vehicle group received subretinal Hank's balance salt solution and intravenous normal saline; while negative control group received nothing. Electroretinogram (ERG) was performed to assess the retinal function at day 0 (baseline), day 4, day 11, day 18, day 26, and day 32. By the end of the study at day 32, the rats were euthanized, and both their enucleated eyes were sent for histology.

resultsNo significant difference in maximal ERG a-wave (p = 0.107) and b-wave, (p = 0.153) amplitude was seen amongst the experimental groups. However, photopic 30 Hz flicker amplitude of the study eye showed significant differences in the 3 groups (p = 0.032). Within the intervention group, there was an improvement in 30 Hz flicker ERG response of all 6 treated right eyes, which was injected with subretinal DPSC; while the 30 Hz flicker ERG of the non-treated left eyes remained flat. Histology showed improved outer nuclear layer thickness in intervention group; however, findings were not significant compared to the negative and vehicle groups.

conclusionCombination of subretinal and intravenous injection of DPSCs may have potential to rescue cone function from a NaIO

Indexed as

Retinal DegenerationAnimalsDental PulpDisease Models, AnimalHumansIodatesRatsRats, Sprague-DawleyStem CellsIodatessodium iodateDegenerated retinaDental pulpElectroretinographyMesenchymal stem cellSodium iodateSprague-Dawley rats

Identifiers

PMID33415670
PMCPMC7862472
OpenAlexW3118268421

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.