Evidence map›Paper›PMID 26770344›Full record

ArticleInternational journal of clinical and experimental medicine2015

Brucella outer membrane protein Omp25 induces microglial cells in vitro to secrete inflammatory cytokines and inhibit apoptosis.

Qiao-Li Ma, Ai-Cui Liu, Xiao-Juan Ma, Yan-Bai Wang, Yu-Ting Hou, Zhen-Hai Wang

Open access · greenAbstract read
In one paragraph

Article in International journal of clinical and experimental medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.7field-weighted citation impact, top 8% 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

21 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Frontiers in cellular and infection microbiology · 2024
    Review
  5. Frontiers in cellular and infection microbiology · 2024
    Review
  6. False Positives in Brucellosis Serology: Wrong Bait and Wrong Pond?Tropical medicine and infectious disease · 2023
    Review
  7. Article
  8. Article
  9. Uncovering the Hidden Credentials ofMicrobiology and molecular biology reviews : MMBR · 2021
    Review
  10. Knockdown of MgExperimental and therapeutic medicine · 2020
    Article
  11. Article
  12. Evaluation of Reactivity of Monoclonal Antibodies Against Omp25 ofFrontiers in cellular and infection microbiology · 2020
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Frontiers in immunology · 2017
    Article
  19. Frontiers in immunology · 2017
    Article
  20. Outer Membrane Protein 25 ofFrontiers in veterinary science · 2017
    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 1 country.

Qiao-Li MaCenter of Neurology, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China; Ningxia Key Laboratory of Cerebrocranial DiseasesYinchuan 750004 Ningxia, China; National Engineering Research Center for Beijing Technology, Sub-Center in NingxiaYinchuan 750004, Ningxia, China.
Ai-Cui LiuCenter of Neurology, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China; Ningxia Key Laboratory of Cerebrocranial DiseasesYinchuan 750004 Ningxia, China; National Engineering Research Center for Beijing Technology, Sub-Center in NingxiaYinchuan 750004, Ningxia, China.
Xiao-Juan MaNingxia Medical University Yinchuan 750004, Ningxia, China.
Yan-Bai WangNcurolgmph Laboratory, General Hospital of Ningxia Medical University Yinchuan 75004, Ningxia, China.
Yu-Ting HouNcurolgmph Laboratory, General Hospital of Ningxia Medical University Yinchuan 75004, Ningxia, China.
Zhen-Hai WangCenter of Neurology, General Hospital of Ningxia Medical University Yinchuan 750004, Ningxia, China.
Ningxia Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Omp25 protein, an outer membrane protein of Brucella, can cause damage to the central nervous system. As one type of macrophage, microglial cells play a role in immune surveillance and immune protection in the central nervous system; therefore, they are major targets of bacterial attack. The present study examined BV2 mouse microglial cells that were stimulated with different concentrations of Omp25 recombinant protein, and the secretion of inflammatory cytokines by the BV2 cells as well as their level of apoptosis were observed. The objective of the study was to preliminarily illustrate the possible mechanism that Omp25 uses to damage the central nervous system. Mouse BV2 microglial cells were incubated with different concentrations of Omp25 for 24 h, and an enzyme-linked immunosorbent assay (ELISA) was used to detect the secretion of the inflammatory cytokines interleukin (IL)-6, tumour necrosis factor (TNF)-α and HMGB1 (high mobility group box-1 protein); reverse transcription polymerase chain reaction (RT-PCR) was used to detect the expression of TLR4 (Toll-like receptor 4) mRNA; Annexin V-fluorescein isothiocyanate (FITC) double staining was used to detect apoptosis in the BV2 cells. After the BV2 cells were stimulated with different concentrations of Omp25, the levels of IL-6, TNF-α and HMGB1 was increased, and the difference was statistically significant compared with the control group (P<0.05). The secretion of TNF-α and HMGB1 showed a trend toward an initial increase followed by a decrease. The expression level of TLR4 mRNA was increased. Omp25 protein can inhibit apoptosis in BV2 cells. The outer membrane protein Omp25 of Brucella promotes microglial cells to secrete inflammatory cytokines and inhibit apoptosis. TLR4 may be involved in the immune response of the central nervous system to Brucella infection.

Indexed as

Brucellamicroglial cellsOmp25outer membrane proteinTLR4

Identifiers

PMID26770344
PMCPMC4694244
OpenAlexW2414868000

What OpenQuestion holds

Textmetadata
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.