Evidence map›Paper›PMID 22322213›Full record

ArticleNeurotoxicology2012

Tremor, olfactory and motor changes in Italian adolescents exposed to historical ferro-manganese emission.

Roberto G Lucchini, Stefano Guazzetti, Silvia Zoni, Filippo Donna, Stephanie Peter, Annalisa Zacco, Marco Salmistraro, Elza Bontempi, Neil J Zimmerman, Donald R Smith

Open access · greenAbstract read
In one paragraph

Article in Neurotoxicology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 147 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
147citing papers in PubMed, 4 pooled it
12.6field-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

147 citing papers in PubMed, 4 syntheses or guidelines pooled it, 260 citations in OpenAlex.

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  15. Elevated brain manganese induces motor disease by upregulating the kynurenine pathway of tryptophan metabolism.Proceedings of the National Academy of Sciences of the United States of America · 2025
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87 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

10 authors at 4 institutions in 2 countries.

Roberto G LucchiniOccupational Health, University of Brescia, Italy. lucchini@med.unibs.it
Stefano Guazzetti
Silvia Zoni
Filippo Donna
Stephanie Peter
Annalisa Zacco
Marco Salmistraro
Elza Bontempi
Neil J Zimmerman
Donald R Smith
University of Brescia · ITNational Interuniversity Consortium of Materials Science and Technology · ITAzienda Sanitaria Unità Locale di Reggio Emilia · ITUniversity of California, Santa Cruz · US

Funding

Neurologic function in children exposed to ambient manganeseR01ES019222 · NIEHS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI Megan K Horton · 2010 to 2026
$9.1M
Neurobehavioral Impacts of Early Mn ExposuresR01ES018990 · NIEHS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI SMITH, DONALD R · 2010 to 2014
$2.4M
NIEHS NIH HHS R01 ES018990NIEHS NIH HHS R01 ES019222NIEHS NIH HHS R01ES019222
6 · The paper itself

Abstract

BACKGROUND AND

objectiveIncreased prevalence of Parkinsonism was observed in Valcamonica, Italy, a region impacted by ferroalloy plants emissions containing manganese and other metals for a century until 2001. The aim of this study was to assess neurobehavioral functions in adolescents from the impacted region and the reference area of Garda Lake.

methodsAdolescents age 11-14 years were recruited through the school system for neuro-behavioral testing. Metals including manganese, lead, iron, zinc, copper were measured in airborne particulate matter collected with 24-h personal samplers, and in soil, tap water, blood, urine and hair. Independent variables included parental education and socio-economic status, children's body mass index, number of siblings, parity order, smoking and drinking habits.

resultsA total of 311 subjects (49.2% females), residing in either the exposed (n=154) or the reference (n=157) area participated. Average airborne and soil manganese were respectively 49.5 ng/m(3) (median 31.4, range 1.24-517) and 958 ppm (median 897, range 465-1729) in the impacted area, and 27.4 ng/m(3) (median 24.7, range 5.3-85.9) ng/m(3) and 427 ppm (median 409 range 160-734) in the reference area. Regression models showed significant impairment of motor coordination (Luria-Nebraska test, p=0.0005), hand dexterity (Aiming Pursuit test, p=0.0115) and odor identification (Sniffin' task, p=0.003) associated with soil manganese. Tremor intensity was positively associated with blood (p=0.005) and hair (p=0.01) manganese.

conclusionHistorical environmental exposure to manganese from ferroalloy emission reflected by the concentration in soil and the biomarkers was associated with sub-clinical deficits in olfactory and motor function among adolescents.

Indexed as

AdolescentAdolescent DevelopmentAge FactorsAir PollutantsBiomarkersChildCross-Sectional StudiesEnvironmental ExposureEnvironmental MonitoringFemaleHumansIronItalyLinear ModelsLogistic ModelsMaleAir PollutantsBiomarkersferro-manganese alloyIronManganese

Identifiers

PMID22322213
PMCPMC3360122
OpenAlexW2028662420

What OpenQuestion holds

Textmetadata
LicenceTDM
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.