Evidence map›Paper›PMID 37946333›Full record

ArticleAsian spine journal2023

Transforming Growth Factor-β Induces Interleukin-6 Secretion from Human Ligamentum Flavum-Derived Cells through Partial Activation of p38 and p44/42 Mitogen-Activated Protein Kinases.

Yuta Goto, Kenji Kato, Kiyoshi Yagi, Yohei Kawaguchi, Hiroki Yonezu, Tomoko Koshimae, Yuko Waguri-Nagaya, Hideki Murakami, Nobuyuki Suzuki

Open access · diamondAbstract read
In one paragraph

Article in Asian spine journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.2field-weighted citation impact, top 40% 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

3 citing papers in PubMed, 1 citations in OpenAlex.

  1. Review
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  3. Review
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

9 authors at 1 institution in 1 country.

Yuta GotoDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Kenji KatoDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Kiyoshi YagiDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Yohei KawaguchiDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Hiroki YonezuDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Tomoko KoshimaeDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Yuko Waguri-NagayaDepartment of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan.
Hideki MurakamiDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Nobuyuki SuzukiDepartment of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Nagoya City University · JP

Funding

Japan Society for the Promotion of Science 17K16697Japan Society for the Promotion of Science 19K18506
6 · The paper itself

Abstract

STUDY

designThis experimental study was performed using human ligamentum flavum-derived cells (HFCs). PURPOSE: To investigate the intracellular signaling mechanism of interleukin-6 (IL-6) secretion in transforming growth factor-β (TGF- β)-stimulated HFCs. OVERVIEW OF LITERATURE: Lumbar spinal stenosis (LSS) is a prevalent disease among the elderly, characterized by debilitating pain in the lower extremities. Although the number of patients with LSS has increased in recent years, the underlying pathomechanism remains unclear. Clinical examinations typically rely on magnetic resonance imaging to diagnose patients, revealing ligamentum flavum hypertrophy. Some studies have suggested an association between ligamentum flavum hypertrophy and inflammation/fibrosis, and expression of TGF-β and IL-6 has been observed in surgically obtained ligamentum flavum samples. However, direct evidence linking TGF-β and IL-6 expression in HFCs is lacking.

methodsHFCs were obtained from patients with LSS who had undergone decompression surgery. The cells were stimulated with TGF-β and pretreated with either the p38 mitogen-activated protein (MAP) kinase inhibitor SB203580 or the p44/42 MAP kinase inhibitor FR180204. IL-6 secretion in the cell culture medium and IL-6 messenger RNA (mRNA) expression levels were analyzed using an enzyme-linked immunoassay and real-time polymerase chain reaction, respectively.

resultsTGF-β administration resulted in a dose- and time-dependent stimulation of IL-6 release. Treatment with SB203580 and FR180204 markedly suppressed TGF-β-induced IL-6 secretion from HFCs. Moreover, these inhibitors suppressed IL-6 mRNA expression in response to TGF-β stimulation.

conclusionsOur findings indicate that TGF-β induces IL-6 protein secretion and gene expression in HFCs through the activation of p38 or p44/42 MAP kinases. These results suggest a potential association between IL-6-mediated inflammatory response and tissue hypertrophy in LSS, and we provide insights into molecular targets for therapeutic interventions targeting LSS-related inflammation through our analysis of the MAP kinase pathway using HFCs.

Indexed as

Interleukin-6Ligamentum flavumMAP kinaseSpinal stenosisTransforming growth factor-β

Identifiers

PMID37946333
PMCPMC10764132
OpenAlexW4388571875

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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.