Evidence map›Paper›PMID 34111562›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2021

Intranasal infusion of GD3 and GM1 gangliosides downregulates alpha-synuclein and controls tyrosine hydroxylase gene in a PD model mouse.

Yutaka Itokazu, Takahiro Fuchigami, John C Morgan, Robert K Yu

Open access · bronzeAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 10% 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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Sphingolipids in Gaucher disease: a systematic review.Orphanet journal of rare diseases · 2025
    Pooled it
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  15. Research progress on intranasal treatment for Parkinson's disease.Neuroprotection (Chichester, England) · 2024
    Review
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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.

Yutaka ItokazuDepartment of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA. Electronic address: yitokazu@augusta.edu.
Takahiro FuchigamiDepartment of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.
John C MorganMovement Disorders Program, Parkinson's Foundation Center of Excellence, Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.
Robert K YuDepartment of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA. Electronic address: ryu@augusta.edu.
Augusta University · USParkinson's Foundation · US

Funding

Glycolipids of Neural Stem CellsR01NS100839 · NINDS · AUGUSTA UNIVERSITY · PI ITOKAZU, YUTAKA · 2018 to 2022
$1.7M
NINDS NIH HHS R01 NS100839
6 · The paper itself

Abstract

Parkinson's disease (PD) is characterized by Lewy bodies (composed predominantly of alpha-synuclein [aSyn]) and loss of pigmented midbrain dopaminergic neurons comprising the nigrostriatal pathway. Most PD patients show significant deficiency of gangliosides, including GM1, in the brain, and GM1 ganglioside appears to keep dopaminergic neurons functioning properly. Thus, supplementation of GM1 could potentially provide some rescuing effects. In this study, we demonstrate that intranasal infusion of GD3 and GM1 gangliosides reduces intracellular aSyn levels. GM1 also significantly enhances expression of tyrosine hydroxylase (TH) in the substantia nigra pars compacta of the A53T aSyn overexpressing mouse, following restored nuclear expression of nuclear receptor related 1 (Nurr1, also known as NR4A2), an essential transcription factor for differentiation, maturation, and maintenance of midbrain dopaminergic neurons. GM1 induces epigenetic activation of the TH gene, including augmentation of acetylated histones and recruitment of Nurr1 to the TH promoter region. Our data indicate that intranasal administration of gangliosides could reduce neurotoxic proteins and restore functional neurons via modulating chromatin status by nuclear gangliosides.

Indexed as

Administration, Intranasalalpha-SynucleinAnimalsCell LineDisease Models, AnimalDown-RegulationEpigenesis, GeneticGangliosidesGene Expression RegulationG(M1) GangliosideHumansMaleMiceParkinson DiseaseSubstantia NigraTyrosine 3-Monooxygenasealpha-Synucleinganglioside, GD3GangliosidesG(M1) GangliosideSnca protein, mouseTyrosine 3-Monooxygenasealpha-synucleindopaminergic neuronepigenetic regulationganglioside therapyGD3 gangliosideGM1 gangliosidehualpha-Synmitochondrionnurr1Parkinson's diseasetyrosine hydroxylase

Identifiers

PMID34111562
PMCPMC8531229
OpenAlexW3172060644

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.