Evidence map›Paper›PMID 23258538›Full record

ArticleThe Journal of biological chemistry2013

Metabolism of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine by mitochondrion-targeted cytochrome P450 2D6: implications in Parkinson disease.

Prachi Bajpai, Michelle C Sangar, Shilpee Singh, Weigang Tang, Seema Bansal, Goutam Chowdhury, Qian Cheng, Ji-Kang Fang, Martha V Martin, F Peter Guengerich and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.6field-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

32 citing papers in PubMed, 75 citations in OpenAlex.

  1. 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

11 authors at 2 institutions in 1 country.

Prachi BajpaiDepartment of Animal Biology and Marie Lowe Center for Comparative Oncology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6046, USA.
Michelle C Sangar
Shilpee Singh
Weigang Tang
Seema Bansal
Goutam Chowdhury
Qian Cheng
Ji-Kang Fang
Martha V Martin
F Peter Guengerich
Narayan G Avadhani
University of Pennsylvania · USVanderbilt University · US

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI SHELLEY L BERGER · 1985 to 2026
$222.3M
MEDICAL SCIENTIST TRAINING PROGRAMT32GM007170 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI BRASS, LAWRENCE F · 1985 to 2022
$54.0M
Role of Mitochondria-Targeted CYP2D6 in Chemical ToxicityR01GM034883 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI AVADHANI, NARAYAN G · 1985 to 2018
$6.1M
Metabolism of Carcinogens and Drugs by Human P450sR37CA090426 · NCI · VANDERBILT UNIVERSITY · PI GUENGERICH, F PETER · 2006 to 2015
$3.6M
NCI NIH HHS P30 CA016520NCI NIH HHS R37 CA090426NIGMS NIH HHS R01 GM034883NIGMS NIH HHS T32 GM007170
6 · The paper itself

Abstract

1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is a neurotoxic side product formed in the chemical synthesis of desmethylprodine opioid analgesic, which induces Parkinson disease. Monoamine oxidase B, present in the mitochondrial outer membrane of glial cells, catalyzes the oxidation of MPTP to the toxic 1-methyl-4-phenylpyridinium ion (MPP(+)), which then targets the dopaminergic neurons causing neuronal death. Here, we demonstrate that mitochondrion-targeted human cytochrome P450 2D6 (CYP2D6), supported by mitochondrial adrenodoxin and adrenodoxin reductase, can efficiently catalyze the metabolism of MPTP to MPP(+), as shown with purified enzymes and also in cells expressing mitochondrial CYP2D6. Neuro-2A cells stably expressing predominantly mitochondrion-targeted CYP2D6 were more sensitive to MPTP-mediated mitochondrial respiratory dysfunction and complex I inhibition than cells expressing predominantly endoplasmic reticulum-targeted CYP2D6. Mitochondrial CYP2D6 expressing Neuro-2A cells produced higher levels of reactive oxygen species and showed abnormal mitochondrial structures. MPTP treatment also induced mitochondrial translocation of an autophagic marker, Parkin, and a mitochondrial fission marker, Drp1, in differentiated neurons expressing mitochondrial CYP2D6. MPTP-mediated toxicity in primary dopaminergic neurons was attenuated by CYP2D6 inhibitor, quinidine, and also partly by monoamine oxidase B inhibitors deprenyl and pargyline. These studies show for the first time that dopaminergic neurons expressing mitochondrial CYP2D6 are fully capable of activating the pro-neurotoxin MPTP and inducing neuronal damage, which is effectively prevented by the CYP2D6 inhibitor quinidine.

Indexed as

1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineAdrenergic alpha-AntagonistsAnimalsCell LineCytochrome P-450 CYP2D6Dopamine AgentsDopaminergic NeuronsDynaminsHumansMiceMitochondriaMitochondrial ProteinsParkinsonian DisordersQuinidineReactive Oxygen SpeciesUbiquitin-Protein Ligases1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineAdrenergic alpha-AntagonistsCytochrome P-450 CYP2D6Dnm1l protein, mouseDopamine AgentsDynaminsMitochondrial Proteinsparkin proteinQuinidineReactive Oxygen SpeciesUbiquitin-Protein Ligases

Identifiers

PMID23258538
PMCPMC3567693
OpenAlexW2007360321

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.