Evidence map›Paper›PMID 33717981›Full record

ArticleJournal of orthopaedic translation2021

Combination of chondrocytes and chondrons improves extracellular matrix production to promote the repairs of defective knee cartilage in rabbits.

Wangping Duan, Yu Zhao, Xiaochun Ren, Ruipeng Zhao, Qi Li, Zhenwei Sun, Wenjie Song, Yanfei Yang, Pengcui Li, Xiaochun Wei

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic translation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 22 citations in OpenAlex.

  1. Deficiency of the mCellular and molecular life sciences : CMLS · 2026
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  10. Reversible dougong structured receptor-ligand recognition for building dynamic extracellular matrix mimics.Proceedings of the National Academy of Sciences of the United States of America · 2022
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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 1 institution in 1 country.

Wangping DuanDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Yu ZhaoDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Xiaochun RenDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Ruipeng ZhaoDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Qi LiDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Zhenwei SunDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Wenjie SongDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Yanfei YangDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Pengcui LiDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Xiaochun WeiDepartment of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
Shanxi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChondrons are composed of chondrocytes and the surrounding pericellular matrix (PCM) and function to enhance chondrocyte-mediated cartilage tissue engineering. This study aimed at investigating the potential effect of combined chondrocytes with chondrons on the production of proteoglycan and collagen-II (Col-2) and the repair of defective knee cartilage in rabbits.

methodsChondrocytes and chondrons were isolated from the knee cartilage of rabbits, and cultured alone or co-cultured for varying periods in vitro. Their morphology was characterized by histology. The levels of aggrecan (AGG), Col-2 and glycosaminoglycan (GAG) expression were quantified by qRT-PCR, Alcian blue-based precipitation and ELISA. The effect of combined chondrocytes with chondrons in alginate spheres on the repair of defective knee cartilage was examined in rabbits.

resultsThe isolated chondrocytes and chondrons displayed unique morphology and began to proliferate on day 3 and 6 post culture, respectively, accompanied by completely degenerated PCM on day 6 post culture. Evidently, chondrocytes had stronger proliferation capacity than chondrons. Longitudinal analyses indicated that culture of chondrons, but not chondrocytes, increased AGG mRNA transcripts and GAG levels with time and Col-2 mRNA transcripts only on day 3 post culture. Compared with chondrocytes or chondrons alone, co-culture of chondrocytes and chondrons significantly up-regulated AGG and Col-2 expression and GAG production, particularly at a ratio of 1:1. Implantation with chondrocytes and chondrons at 1:1 significantly promoted the repair of defective knee cartilage in rabbits, accompanied by reduced the Wakiteni scores with time.

conclusionCombined chondrons with chondrocytes promoted the production of extracellular matrix and the repair of defective knee cartilage in rabbits. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE: This study explores that the combination of chondrons and chondrocytes may be new therapeutic strategy for cartilage tissue engineering and repair of defective cartilage.

Indexed as

Cartilage defectChondrocytesChondronsCo-cultureCOL-2GlycosaminoglycanRepair

Identifiers

PMID33717981
PMCPMC7906883
OpenAlexW3133114192

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.