Evidence map›Paper›PMID 22949875›Full record

ReviewInternational journal of molecular sciences2012

The role of free radicals in the aging brain and Parkinson's Disease: convergence and parallelism.

Hemant Kumar, Hyung-Woo Lim, Sandeep Vasant More, Byung-Wook Kim, Sushruta Koppula, In Su Kim, Dong-Kug Choi

Open access · goldAbstract readReview
In one paragraph

Review in International journal of molecular sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
10.1field-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

93 citing papers in PubMed, 1 synthesis or guideline pooled it, 210 citations in OpenAlex.

  1. Pooled it
  2. Carnosine supplementation improves cognitive outcomes in younger participants of the NEAT trial.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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33 more citing papers are in PubMed but not listed here.

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 4 institutions in 6 countries.

Hemant KumarDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
Hyung-Woo LimDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
Sandeep Vasant MoreDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
Byung-Wook KimDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
Sushruta KoppulaDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
In Su KimDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.
Dong-Kug ChoiDepartment of Biotechnology, Konkuk University, Chungju 380-704, Korea.ORCID 0000-0001-7041-1524
Konkuk University · KRHandan College · CNHess (United States) · USSanden (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Free radical production and their targeted action on biomolecules have roles in aging and age-related disorders such as Parkinson's disease (PD). There is an age-associated increase in oxidative damage to the brain, and aging is considered a risk factor for PD. Dopaminergic neurons show linear fallout of 5-10% per decade with aging; however, the rate and intensity of neuronal loss in patients with PD is more marked than that of aging. Here, we enumerate the common link between aging and PD at the cellular level with special reference to oxidative damage caused by free radicals. Oxidative damage includes mitochondrial dysfunction, dopamine auto-oxidation, α-synuclein aggregation, glial cell activation, alterations in calcium signaling, and excess free iron. Moreover, neurons encounter more oxidative stress as a counteracting mechanism with advancing age does not function properly. Alterations in transcriptional activity of various pathways, including nuclear factor erythroid 2-related factor 2, glycogen synthase kinase 3β, mitogen activated protein kinase, nuclear factor kappa B, and reduced activity of superoxide dismutase, catalase and glutathione with aging might be correlated with the increased incidence of PD.

Indexed as

Oxidative StressAgingAnimalsBrainFree RadicalsHumansOxidation-ReductionParkinson DiseaseFree Radicalsagingfree radicalsmitochondrial dysfunctionnrf2Parkinson’s diseaseα-synuclein

Identifiers

PMID22949875
PMCPMC3431873
OpenAlexW2138898590

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.