Evidence map›Paper›PMID 33823825›Full record

ArticleBMC musculoskeletal disorders2021

The increased motion of lumbar induces ligamentum flavum hypertrophy in a rat model.

Baojian Wang, Chunyu Gao, Ping Zhang, Wu Sun, Jingru Zhang, Jinghua Gao

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

14 citing papers in PubMed, 20 citations in OpenAlex.

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  10. Manipulation of osteogenic and adipogenic differentiation of human degenerative disc and ligamentum flavum derived progenitor cells using IL-1β, IL-19, and IL-20.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
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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

6 authors at 1 institution in 1 country.

Baojian Wang *Department of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
Chunyu Gao *Department of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
Ping ZhangDepartment of Pathology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
Wu SunDepartment of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
Jingru ZhangDepartment of Pathology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
Jinghua GaoDepartment of Spine, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing, China. gaojinghua2019@hotmail.com.
Wangjing Hospital of China Academy of Chinese Medical Sciences · CN

Funding

National Natural Science Foundation of China 81473694
6 · The paper itself

Abstract

backgroundThe purpose of this study was to establish a novel rat model for ligamentum flavum (LF) hypertrophy using increased motion of lumbar and to elucidate the etiology of (LFH).

methodsA total number of 30 male rats were used. The increased motion of lumbar was induced by surgical resection of L5/6 posterior elements (n = 15). The other rats underwent a sham operation (n = 15). After 8 weeks, all rats were taken lateral plain X-rays. The LF from L5/6 in both groups were harvested to investigate histological, immunohistological, and real-time PCR analysis.

resultsAccording to radiological results, the disc height ratio, flexion ratio, and extension ratio were larger in the rats in the experimental group than that of in the sham group. The HE staining showed that the LF thickness in the experimental group significantly increased in comparison to the sham group. The Masson trichrome staining showed that the ratio of elastic fibers to collagen fibers in experimental group was lower than that in the sham group. The protein and gene expression of TGF-β1, TNF-α, IL-1β, and Col 1 were significantly higher in the experimental group than that in the sham group.

conclusionA relatively safe, simple, and rapid rat model of LFH using increased motion of lumbar was established. The increased motion of lumbar could lead to high expression of inflammatory and fibrotic factors in LF, causing the accumulation of collagen fibers and decreasing of elastic fibers.

Indexed as

Ligamentum FlavumSpinal StenosisAnimalsHypertrophyLumbar VertebraeLumbosacral RegionMaleRatsExperimental studyFibrotic factorHypertrophyImmunohistochemistryIncreased motionInflammatory factorLigamentum flavumLumbar degenerative diseaseMasson trichrome stainingRat modelReal‐time PCR

Identifiers

PMID33823825
PMCPMC8025532
OpenAlexW3151789204

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Registered trials

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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.