Evidence map›Paper›PMID 31577702›Full record

ArticleMedicine2019

N-acetyl cysteine inhibits lipopolysaccharide-mediated synthesis of interleukin-1β and tumor necrosis factor-α in human periodontal ligament fibroblast cells through nuclear factor-kappa B signaling.

Rui Zheng, Yujie Tan, Mengqin Gu, Ting Kang, Hui Zhang, Ling Guo

Open access · goldAbstract read
In one paragraph

Article in Medicine, 2019. 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
0.9field-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

16 citing papers in PubMed, 22 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Life (Basel, Switzerland) · 2022
    Article
  12. A missense variant inOpen life sciences · 2022
    Article
  13. Review
  14. Article
  15. Article
  16. 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

6 authors at 1 institution in 4 countries.

Rui ZhengDepartment of Prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, China.
Yujie Tan
Mengqin Gu
Ting Kang
Hui Zhang
Ling Guo
Apple (Israel) · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this study was to investigate the role of n-acetyl cysteine (NAC) in the lipopolysaccharide (LPS)-mediated induction of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) synthesis by human periodontal ligament fibroblast cells (hPDLFs). In addition, we aimed to determine the involvement of the nuclear factor-kappa B (NF-κB) pathway in any changes in IL-1β and TNF-α expression observed in response to LPS and NAC.

methodsHPDLFs were obtained by primary culture. The culture medium used in this experiment was Dulbecco's Modified Eagle Medium (DMEM low-glucose). Cells were stimulated with various concentrations of NAC or LPS. Cell proliferation was measured at various time-points with the cell Counting Kit 8 (CCK-8) assay. mRNA levels of IL-1β and TNF-α were determined by real-time quantitative polymerase chain reaction (RT-qPCR) analysis. Protein levels of IL-1β and TNF-α were measured by enzyme-linked immunosorbent assay (ELISA). Protein and mRNA expression levels of NF-κB were measured by western blot and RT-qPCR.

resultsThe results showed that LPS treatment in hPDLFs induced mRNA and protein expression of IL-1β, TNF-α, and NF-κB. However, these effects were eliminated by pretreatment with NAC. Pretreatment with both NAC (1 mmol/L) and BAY11-7082 (10 μmol/L) significantly inhibited the NF-κB activity induced by LPS.

conclusionNAC inhibits the LPS-mediated synthesis of tumor TNF-α and IL-1β in hPDLFs, through the NF-κB pathway.

Indexed as

AcetylcysteineCells, CulturedEnzyme-Linked Immunosorbent AssayFibroblastsHumansInterleukin-1betaLipopolysaccharidesNF-kappa BPeriodontal LigamentReal-Time Polymerase Chain ReactionRNA, MessengerSignal TransductionTumor Necrosis Factor-alphaAcetylcysteineInterleukin-1betaLipopolysaccharidesNF-kappa BRNA, MessengerTumor Necrosis Factor-alpha

Identifiers

PMID31577702
PMCPMC6783161
OpenAlexW2978902489

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.