Evidence map›Paper›PMID 34011937›Full record

ArticleScientific reports2021

Intranasal delivery of mitochondria for treatment of Parkinson's Disease model rats lesioned with 6-hydroxydopamine.

Jui-Chih Chang, Yi-Chun Chao, Huei-Shin Chang, Yu-Ling Wu, Hui-Ju Chang, Yong-Shiou Lin, Wen-Ling Cheng, Ta-Tsung Lin, Chin-San Liu

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
9.6field-weighted citation impact, top 1% 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

47 citing papers in PubMed, 2 syntheses or guidelines pooled it, 85 citations in OpenAlex.

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  12. Mitochondrial Transplantation as a Therapeutic Strategy for Inherited Mitochondrial Diseases.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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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

9 authors at 1 institution in 1 country.

Jui-Chih ChangVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan. 145520@cch.org.tw.
Yi-Chun ChaoVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Huei-Shin ChangVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Yu-Ling WuVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Hui-Ju ChangVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Yong-Shiou LinVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Wen-Ling ChengVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Ta-Tsung LinVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan.
Chin-San LiuVascular and Genomic Center, Changhua Christian Hospital, 135 Nanhsiao Street, Changhua, 50094, Taiwan. 1liu48111@gmail.com.
Changhua Christian Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The feasibility of delivering mitochondria intranasally so as to bypass the blood-brain barrier in treating Parkinson's disease (PD), was evaluated in unilaterally 6-OHDA-lesioned rats. Intranasal infusion of allogeneic mitochondria conjugated with Pep-1 (P-Mito) or unconjugated (Mito) was performed once a week on the ipsilateral sides of lesioned brains for three months. A significant improvement of rotational and locomotor behaviors in PD rats was observed in both mitochondrial groups, compared to sham or Pep-1-only groups. Dopaminergic (DA) neuron survival and recovery > 60% occurred in lesions of the substantia nigra (SN) and striatum in Mito and P-Mito rats. The treatment effect was stronger in the P-Mito group than the Mito group, but the difference was insignificant. This recovery was associated with restoration of mitochondrial function and attenuation of oxidative damage in lesioned SN. Notably, P-Mito suppressed plasma levels of inflammatory cytokines. Mitochondria penetrated the accessory olfactory bulb and doublecortin-positive neurons of the rostral migratory stream (RMS) on the ipsilateral sides of lesions and were expressed in striatal, but not SN DA neurons, of both cerebral hemispheres, evidently via commissural fibers. This study shows promise for intranasal delivery of mitochondria, confirming mitochondrial internalization and migration via RMS neurons in the olfactory bulb for PD therapy.

Indexed as

Administration, IntranasalAnimalsCorpus StriatumCytokinesDisease Models, AnimalDopaminergic NeuronsDoublecortin Domain ProteinsDoublecortin ProteinFemaleInflammation MediatorsMicrotubule-Associated ProteinsMitochondriaMotor ActivityNeuropeptidesOxidopamineParkinson DiseaseCytokinesDcx protein, ratDoublecortin Domain ProteinsDoublecortin ProteinInflammation MediatorsMicrotubule-Associated ProteinsNeuropeptidesOxidopamine

Identifiers

PMID34011937
PMCPMC8136477
OpenAlexW3163593601

What OpenQuestion holds

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LicenceCC BY
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.