Evidence map›Paper›PMID 26884647›Full record

ArticleMediators of inflammation2016

Cannabinoid CB2 Receptor Mediates Nicotine-Induced Anti-Inflammation in N9 Microglial Cells Exposed to β Amyloid via Protein Kinase C.

Ji Jia, Jie Peng, Zhaoju Li, Youping Wu, Qunlin Wu, Weifeng Tu, Mingchun Wu

Open access · goldAbstract read
In one paragraph

Article in Mediators of inflammation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

9 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
  2. Nicotinic regulation of microglia: potential contributions to addiction.Journal of neural transmission (Vienna, Austria : 1996) · 2024
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Dynamic Modulation of Microglia/Macrophage Polarization by miR-124 after Focal Cerebral Ischemia.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2016
    Article
  8. Review
  9. 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

7 authors at 1 institution in 1 country.

Ji JiaDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Jie PengDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Zhaoju LiDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Youping WuDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Qunlin WuDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Weifeng TuDepartment of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Mingchun WuDepartment of Anesthesiology, Wuhan General Hospital of Guangzhou Military Command, Wuhan 430070, China.
General Hospital of Guangzhou Military Command · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundReducing β amyloid- (Aβ-) induced microglial activation is considered to be effective in treating Alzheimer's disease (AD). Nicotine attenuates Aβ-induced microglial activation; the mechanism, however, is still elusive. Microglia could be activated into classic activated state (M1 state) or alternative activated state (M2 state); the former is cytotoxic and the latter is neurotrophic. In this investigation, we hypothesized that nicotine attenuates Aβ-induced microglial activation by shifting microglial M1 to M2 state, and cannabinoid CB2 receptor and protein kinase C mediate the process.

methodsWe used Aβ1-42 to activate N9 microglial cells and observed nicotine-induced effects on microglial M1 and M2 biomarkers by using western blot, immunocytochemistry, and enzyme-linked immunosorbent assay (ELISA).

resultsWe found that nicotine reduced the levels of M1 state markers, including inducible nitric oxide synthase (iNOS) expression and tumor necrosis factor α (TNF-α) and interleukin- (IL-) 6 releases; meanwhile, it increased the levels of M2 state markers, including arginase-1 (Arg-1) expression and brain-derived neurotrophic factor (BDNF) release, in the Aβ-stimulated microglia. Coadministration of cannabinoid CB2 receptor antagonist or protein kinase C (PKC) inhibitor partially abolished the nicotine-induced effects.

conclusionThese findings indicated that cannabinoid CB2 receptor mediates nicotine-induced anti-inflammation in microglia exposed to Aβ via PKC.

Indexed as

Amyloid beta-PeptidesAnimalsCell LineInflammationMiceMicrogliaNicotineProtein Kinase CReceptor, Cannabinoid, CB2Amyloid beta-PeptidesNicotineProtein Kinase CReceptor, Cannabinoid, CB2

Identifiers

PMID26884647
PMCPMC4738711
OpenAlexW2240106794

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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.