Evidence map›Paper›PMID 24826069›Full record

ArticleMolecular vision2014

Retinal neuronal MCP-1 induced by AGEs stimulates TNF-α expression in rat microglia via p38, ERK, and NF-κB pathways.

Ning Dong, Libin Chang, Bingsong Wang, Liqun Chu

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 14% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
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  15. Endothelial Dysfunction in Diabetic Retinopathy.Frontiers in endocrinology · 2020
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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

4 authors at 2 institutions in 1 country.

Ning DongDepartment of Ophthalmology, Beijing Shijitan Hospital, Capital Medical University, Beijing, People's Republic of China.
Libin ChangDepartment of Ophthalmology, Beijing Shijitan Hospital, Capital Medical University, Beijing, People's Republic of China.
Bingsong WangDepartment of Ophthalmology, Beijing Shijitan Hospital, Capital Medical University, Beijing, People's Republic of China.
Liqun ChuDepartment of Ophthalmology, Beijing Shijitan Hospital, Capital Medical University, Beijing, People's Republic of China.
Capital Medical University · CNBeijing Shijitan Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRetinal microglia can be activated by retinal neuronal monocyte chemoattractant protein-1 (MCP-1) and play a pivotal role in early retinal degeneration. The current study investigates the pathways via which retinal neuronal MCP-1 stimulates tumor necrosis factor-α (TNF-α) expression in rat microglia.

methodsPrimary rat retinal neurons and microglia were separated and cocultured in a Transwell apparatus. The levels of TNF-α mRNA and soluble TNF-α produced by the microglia in response to advanced glycation end product (AGE)-induced retinal neuronal MCP-1 were measured with real-time PCR and enzyme-linked immunosorbent assay (ELISA). The ability of neuronal MCP-1 to stimulate microglia activation was examined by preexposing the retinal neurons to AGEs and an MCP-1 antibody or by pretreating microglia with AGEs and siRNA specific for CC-chemokine receptor 2 (CCR2) knockdowns. Additionally, we investigated the effects of microglial activation on neuronal MCP-1-induced nuclear factor-κB (NF-κB) activation and phosphorylation of mitogen-activated protein kinases (MAPKs).

resultsStimulation with AGEs significantly increased the expression of TNF-α mRNA and soluble TNF-α in the microglial cells. Retinal neurons that had been pretreated with AGEs and an MCP-1 antibody or microglia that were CCR2 knockdowns displayed greatly reduced TNF-α secretion. Using signaling pathway-specific inhibitors, we showed that blocking the p38, extracellular signal-regulated kinase (ERK), and NF-κB signaling pathways significantly reduced the expression of TNF-α by retinal neuronal MCP-1-stimulated microglia.

conclusionsThis study indicates that TNF-α was released from the activated microglia induced by retinal neuronal MCP-1 via the p38, ERK, and NF-κB pathways, but not c-Jun N-terminal kinase (JNK), which may be an important finding in diabetic retinopathy pathogenesis.

Indexed as

AnimalsChemokine CCL2Extracellular Signal-Regulated MAP KinasesGene Knockdown TechniquesGlycation End Products, AdvancedJNK Mitogen-Activated Protein KinasesMicrogliaNF-kappa Bp38 Mitogen-Activated Protein KinasesPhosphorylationRatsRats, Sprague-DawleyReceptors, CCR2Retinal NeuronsRNA, Small InterferingSignal TransductionCcr2 protein, ratChemokine CCL2Extracellular Signal-Regulated MAP KinasesGlycation End Products, AdvancedJNK Mitogen-Activated Protein KinasesNF-kappa Bp38 Mitogen-Activated Protein KinasesReceptors, CCR2RNA, Small InterferingTumor Necrosis Factor-alpha

Identifiers

PMID24826069
PMCPMC4016805
OpenAlexW1814255743

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.