Evidence map›Paper›PMID 34107971›Full record

ArticleJournal of orthopaedic surgery and research2021

Raloxifene retards the progression of adjacent segmental intervertebral disc degeneration by inhibiting apoptosis of nucleus pulposus in ovariectomized rats.

Qi Sun, Xin-Yu Nan, Fa-Ming Tian, Fang Liu, Shao-Hua Ping, Zhuang Zhou, Liu Zhang

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 30% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. New evidence on the controversy over the correlation between vertebral osteoporosis and intervertebral disc degeneration: a systematic review of relevant animal studies.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 · 2024
    Pooled it
  2. Review
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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

7 authors at 2 institutions in 1 country.

Qi SunDepartment of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China.
Xin-Yu NanDepartment of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China.
Fa-Ming TianMedical Research Center, North China University of Science and Technology, Tangshan, People's Republic of China.
Fang LiuMedical Research Center, North China University of Science and Technology, Tangshan, People's Republic of China.
Shao-Hua PingDepartment of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China.
Zhuang ZhouDepartment of Bone and Soft Tissue Oncology, The Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China.
Liu ZhangDepartment of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China. zhliu130@sohu.com.ORCID http://orcid.org/0000-0001-5239-3561
Hebei Medical University · CNNorth China University of Science and Technology · CN

Funding

National Natural Science Foundation of China 31671235Natural Science Foundation of Hebei Province (CN) H2016209176Youth Natural Science Foundation of China 81702180
6 · The paper itself

Abstract

backgroundAdjacent segmental intervertebral disk degeneration (ASDD) is a major complication secondary to lumbar fusion. Although ASSD pathogenesis remains unclear, the primary cause of intervertebral disk degeneration (IVDD) development is apoptosis of nucleus pulposus (NP). Raloxifene (RAL) could delay ASDD by inhibiting NP apoptosis.

methodsAn ASDD rat model was established by ovariectomy (OVX) and posterolateral spinal fusion (PLF) on levels 4-5 of the lumbar vertebrae. Rats in the treatment groups were administered 1 mg/kg/d RAL by gavage for 12 weeks, following which, all animals were euthanized. Lumbar fusion, apoptosis, ASDD, and vertebrae micro-architecture were evaluated.

resultsRAL maintained intervertebral disk height (DHI), delayed vertebral osteoporosis, reduced histological score, and inhibited apoptosis. The OVX+PLF+RAL group revealed upregulated expression of aggrecan and B-cell lymphoma-2 (bcl2), as well as significantly downregulated expression of a disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS-4), metalloproteinase-13 (MMP-13), caspase-3, BCL2-associated X (bax), and transferase dUTP nick end labeling (TUNEL) staining. Micro-computed tomography (Micro-CT) analysis revealed higher bone volume fraction (BV/TV), bone mineral density (BMD), and trabecular number (Tb.N), and lower trabecular separation (Tb.Sp) in OVX+PLF+RAL group than in the OVX+PLF group.

conclusionsRAL can postpone ASDD development in OVX rats through inhibiting extracellular matrix metabolic imbalance, NP cell apoptosis, and vertebral osteoporosis. These findings showed RAL as a potential therapeutic target for ASDD.

Indexed as

OvariectomyAnimalsApoptosisBone DensityDisease Models, AnimalDisease ProgressionFemaleIntervertebral Disc DegenerationLumbar VertebraeNucleus PulposusOsteoporosisPostoperative ComplicationsRaloxifene HydrochlorideRatsRats, Sprague-DawleySelective Estrogen Receptor ModulatorsRaloxifene HydrochlorideSelective Estrogen Receptor ModulatorsAnimalApoptosisFusionIntervertebral diskOsteoporosis

Identifiers

PMID34107971
PMCPMC8188785
OpenAlexW3167334201

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.