Evidence map›Paper›PMID 34338970›Full record

ArticleMolecular neurobiology2021

Piperine Improves Experimental Autoimmune Encephalomyelitis (EAE) in Lewis Rats Through its Neuroprotective, Anti-inflammatory, and Antioxidant Effects.

Reza Nasrnezhad, Sohrab Halalkhor, Farzin Sadeghi, Fereshteh Pourabdolhossein

Abstract read
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In one paragraph

Article in Molecular neurobiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
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  4. Piperine: From Green Extraction to Clinical Translation-A Review.Drug design, development and therapy · 2026
    Review
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  6. Article
  7. Type I Interferon Signaling Augments Autoimmunity in Neuromyelitis Optica Spectrum Disorder.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
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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 1 institution in 1 country.

Reza NasrnezhadStudent Research Committee, Babol University of Medical Sciences, Babol, Iran.
Sohrab HalalkhorDepartment of Biochemistry, School of Medicine, Babol University of Medical Sciences, Babol, Iran.
Farzin SadeghiCellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
Fereshteh PourabdolhosseinCellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran. pourabdolhossein@gmail.com.ORCID http://orcid.org/0000-0001-9285-1571
Babol University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inflammation, demyelination, glial activation, and oxidative damage are the most pathological hallmarks of multiple sclerosis (MS). Piperine, a main bioactive alkaloid of black pepper, possesses antioxidant, anti-inflammatory, and neuroprotective properties whose therapeutic potential has been less studied in the experimental autoimmune encephalomyelitis (EAE) models. In this study, the efficiency of piperine on progression of EAE model and myelin repair mechanisms was investigated. EAE was induced in female Lewis rats and piperine and its vehicle were daily administrated intraperitoneally from day 8 to 29 post immunization. We found that piperine alleviated neurological deficits and EAE disease progression. Luxol fast blue and H&E staining and immunostaining of lumbar spinal cord cross sections confirmed that piperine significantly reduced the extent of demyelination, inflammation, immune cell infiltration, microglia, and astrocyte activation. Gene expression analysis in lumbar spinal cord showed that piperine treatment decreased the level of pro-inflammatory cytokines (TNF-α, IL-1β) and iNOS and enhanced IL-10, Nrf2, HO-1, and MBP expressions. Piperine supplementation also enhanced the total antioxidant capacity (FRAP) and reduced the level of oxidative stress marker (MDA) in the CNS of EAE rats. Finally, we found that piperine has anti-apoptotic and neuroprotective effect in EAE through reducing caspase-3 (apoptosis marker) and enhancing BDNF and NeuN expressing cells. This study strongly indicates that piperine has a beneficial effect on the EAE progression and could be considered as a potential therapeutic target for MS treatment. Upcoming clinical trials will provide a deeper understanding of piperine's role for the treatment of the MS.

Indexed as

AlkaloidsAnimalsAnti-Inflammatory AgentsAntioxidantsApoptosisAstrocytesBenzodioxolesCaspase 3CytokinesDisease ProgressionDrug Evaluation, PreclinicalEncephalomyelitis, Autoimmune, ExperimentalFemaleGene Expression RegulationMicrogliaNerve Tissue ProteinsAlkaloidsAnti-Inflammatory AgentsAntioxidantsBenzodioxolesCasp3 protein, ratCaspase 3CytokinesNerve Tissue ProteinsNeuroprotective AgentsPiperidinespiperinePolyunsaturated AlkamidesExperimental autoimmune encephalomyelitis (EAE)Glial activationInflammationOxidative stressPiperine

Identifiers

PMID34338970
OpenAlexW3165436945

What Socratic 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 Socratic graph.