Evidence map›Paper›PMID 20213499›Full record

ArticleInflammation2010

Walnut extract inhibits LPS-induced activation of BV-2 microglia via internalization of TLR4: possible involvement of phospholipase D2.

Lauren M Willis, Donna F Bielinski, Derek R Fisher, Nirupa R Matthan, James A Joseph

Abstract read
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In one paragraph

Article in Inflammation, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

22 citing papers in PubMed, 77 citations in OpenAlex.

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  13. Black Walnut (Frontiers in pharmacology · 2019
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  19. Potential mechanisms involved in the anticonvulsant effect of walnut extract on pentylenetetrazole-induced seizure.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2014
    Article
  20. 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

5 authors at 1 institution in 1 country.

Lauren M WillisUSDA-ARS, Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA.
Donna F Bielinski
Derek R Fisher
Nirupa R Matthan
James A Joseph
Tufts University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Walnuts are a rich source of essential fatty acids, including the polyunsaturated fatty acids alpha-linolenic acid and linoleic acid. Essential fatty acids have been shown to modulate a number of cellular processes in the brain, including the activation state of microglia. Microglial activation can result in the generation of cytotoxic intermediates and is associated with a variety of age-related and neurodegenerative conditions. In vitro, microglial activation can be induced with the bacterial cell wall component lipopolysaccharide (LPS). In the present study, we generated a methanolic extract of English walnuts (Juglans regia) and examined the effects of walnut extract exposure on LPS-induced activation in BV-2 microglial cells. When cells were treated with walnut extract prior to LPS stimulation, production of nitric oxide and expression of inducible nitric oxide synthase were attenuated. Walnut extract also induced a decrease in tumor necrosis-alpha (TNFalpha) production. We further found that walnut extract induced internalization of the LPS receptor, toll-like receptor 4, and that the anti-inflammatory effects of walnut were dependent on functional activation of phospholipase D2. These studies represent the first to describe the anti-inflammatory effects of walnuts in microglia, which could lead to nutritional interventions in the prevention and treatment of neurodegeneration.

Indexed as

Juglans1-ButanolAnimalsAnti-Inflammatory AgentsCell LineCell SurvivalDose-Response Relationship, DrugEnzyme ActivationEnzyme InhibitorsFatty AcidsLipopolysaccharidesMiceMicrogliaNitric OxideNitric Oxide Synthase Type IINuts1-ButanolAnti-Inflammatory AgentsEnzyme InhibitorsFatty AcidsLipopolysaccharidesNitric OxideNitric Oxide Synthase Type IINos2 protein, mousePhospholipase Dphospholipase D2Plant ExtractsTlr4 protein, mouseToll-Like Receptor 4Tumor Necrosis Factor-alpha

Identifiers

PMID20213499
OpenAlexW2076576091

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.