Evidence map›Paper›PMID 31286692›Full record

ArticleBrain and behavior2019

The role of chaperone-mediated autophagy in neurotoxicity induced by alpha-synuclein after methamphetamine exposure.

Leping Sun, Yongling Lian, Jiuyang Ding, Yunle Meng, Chen Li, Ling Chen, Pingming Qiu

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
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  12. Melatonin and Autophagy in Aging-Related Neurodegenerative Diseases.International journal of molecular sciences · 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

7 authors at 2 institutions in 1 country.

Leping SunSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.
Yongling LianSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.
Jiuyang DingSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.
Yunle MengSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.
Chen LiSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.
Ling ChenSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.ORCID 0000-0001-7699-4820
Pingming QiuSchool of Forensic Medicine, Southern Medical University, Guangzhou, China.ORCID 0000-0002-5579-1124
Southern Medical University · CNZunyi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionChaperone-mediated autophagy (CMA) is an autophagy-lysosome pathway (ALP) that is different from the other two lysosomal pathways, namely, macroautophagy and microautophagy, and can selectively degrade cytosolic proteins in lysosomes without vesicle formation. CMA activity declines in neurodegenerative diseases such as Parkinson's disease, and similar neurotoxicity can occur after methamphetamine (METH) treatment. The relationship between CMA and METH-induced neurotoxicity is not clear.

methodsWe detected changes in the chaperone protein Hsc70 and the lysosomal surface receptor Lamp-2a after METH treatment and then regulated these two proteins by small interfering RNA and DNA plasmid transfection to investigate how CMA influences METH-induced neurotoxicity.

resultsWe found that CMA activity is decreased after METH exposure in neurons and downregulated Lamp-2a can aggravate the neurotoxicity induced by α-Syn after METH exposure and that Hsc70 overexpression can relieve the abnormal levels of alpha-synuclein and its aggregate forms and the increase in cell apoptosis induced by METH.

conclusionsThe results provide in vivo evidence for CMA plays a pivotal role in METH-induced neurotoxicity, and upregulation of Hsc70 expression significantly protects neuronal cells against METH-induced toxicity. This research may pave the way for potential therapeutic approaches targeting CMA for METH abuse and neurodegenerative disorders.

Indexed as

Chaperone-Mediated AutophagyNeuronsNeurotoxicity Syndromesalpha-SynucleinAnimalsCell LineCentral Nervous System StimulantsDown-RegulationHSC70 Heat-Shock ProteinsHumansLysosomal-Associated Membrane Protein 2MethamphetamineProtective FactorsRatsRNA, Small Interferingalpha-SynucleinCentral Nervous System StimulantsHSC70 Heat-Shock ProteinsHSPA8 protein, humanLAMP2 protein, humanLysosomal-Associated Membrane Protein 2MethamphetamineRNA, Small Interferingalpha-synucleinchaperone-mediated autophagymethamphetamineneurotoxicity

Identifiers

PMID31286692
PMCPMC6710200
OpenAlexW2962257642

What OpenQuestion holds

Textmetadata
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.