Evidence map›Paper›PMID 31105815›Full record

ArticleAmerican journal of translational research2019

Evaluation of intervertebral disc regeneration with injection of mesenchymal stem cells encapsulated in PEGDA-microcryogel delivery system using quantitative T2 mapping: a study in canines.

Jinwei Ying, Zhihua Han, Yang Zeng, Yanan Du, Shishen Pei, Linghao Su, Dike Ruan, Chun Chen

Open access · greenAbstract read
In one paragraph

Article in American journal of translational research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Comparative study of outcomes between allograft intervertebral disc transplantation and anterior cervical discectomy and fusion: a retrospective cohort study at least 5 years of follow-up.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
    Article
  6. Article
  7. Establishing anAnnals of translational medicine · 2021
    Article
  8. Article
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  10. Review
  11. 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

8 authors at 6 institutions in 3 countries.

Jinwei YingThe Second School of Clinical Medicine, Southern Medical University Guangzhou 510515, China.
Zhihua HanDepartment of Trauma and Orthopedics, Trauma Center, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University Shanghai, China.
Yang ZengDepartment of Cancer Biology, Dana Farber Cancer Institute/Harvard Medical School 360 Longwood Ave, Room 3316K, Boston, MA.
Yanan DuDepartment of Biomedical Engineering, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Tsinghua University Beijing 100084, China.
Shishen PeiThe Second School of Clinical Medicine, Southern Medical University Guangzhou 510515, China.
Linghao SuThe Second School of Clinical Medicine, Southern Medical University Guangzhou 510515, China.
Dike RuanThe Second School of Clinical Medicine, Southern Medical University Guangzhou 510515, China.
Chun ChenDepartment of Orthopedic Surgery, The First Affiliated Hospital of Wenzhou Medical University Wenzhou 325000, China.
Second Affiliated Hospital of Guangzhou Medical University · CNDana-Farber Cancer Institute · USGoethe University Frankfurt · DETsinghua University · CNWenzhou Medical University · CNWenzhou University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intervertebral disc degeneration (IDD), the primary cause of low back pain, is still a great challenge to spinal surgeons and clinicians. T2 mapping, a biochemical magnetic resonance imaging (MRI) technique to calculate relaxation time, has the potential to offer a quantitative assessment of IDD. The aim of the study was to evaluate the regenerative effects of adipose-derived mesenchymal stem cells (MSCs) encapsulated in PEGDA-microcryogels (PMs) reinforced alginate hydrogel (AH) on the degenerative intervertebral disc (IVD) in a canine model using T2 mapping. Four degeneration-induced IVDs (L3-L4 to L6-L7) of 12 adult beagle dogs were injected with phosphate-buffered saline (PBS), MSCs, AH-PMs, and MSCs-laden AH-PMs, respectively. The intact IVD L7-S1 served as the normal control. IVD height change on plain radiograph, Pfirrmann grade and T2 relaxation time on MRI, histological change, and extracellular matrix (ECM)-associated proteins were evaluated during the 24-week follow-up period. Injection of MSCs-laden AH-PMs had the most satisfactory effects, having less decrease of IVD height, lower Pfirrmann grade, milder histological change, and longer T2 relaxation time (P < 0.05). T2 relaxation time was positively correlated with ECM content (proteoglycan: r = 0.85, P < 0.001; collagen II: r = 0.79, P < 0.001) and IVD height (r = 0.81, P < 0.001), but negatively correlated with Pfirrmann grade and histological grade (rho = -0.86, P < 0.001; rho = -0.95, P < 0.001). These results suggest that T2 mapping has the potential to quantitatively evaluate the repairing effects of cell-based engineering treatments on IDD for a long-term follow-up.

Indexed as

intervertebral disc regenerationmesenchymal stromal cellmicrocryogelsT2 mappingtissue engineering

Identifiers

PMID31105815
PMCPMC6511749
OpenAlexW2947518501

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.