Evidence map›Paper›PMID 27567731›Full record

ArticleNeurotoxicology2016

Longitudinal T1 relaxation rate (R1) captures changes in short-term Mn exposure in welders.

Mechelle M Lewis, Michael R Flynn, Eun-Young Lee, Scott Van Buren, Eric Van Buren, Guangwei Du, Rebecca C Fry, Amy H Herring, Lan Kong, Richard B Mailman and 1 more

Abstract read
In one paragraph

Article in Neurotoxicology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
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

8 citing papers in PubMed.

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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.

Mechelle M LewisDepartment of Neurology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA; Department of Pharmacology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA.
Michael R FlynnDepartment of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
Eun-Young LeeDepartment of Neurology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA.
Scott Van BurenDepartment of Biostatistics, School of Public Health, University of North Carolina, Chapel Hill, NC, USA.
Eric Van BurenDepartment of Biostatistics, School of Public Health, University of North Carolina, Chapel Hill, NC, USA.
Guangwei DuDepartment of Neurology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA.
Rebecca C FryDepartment of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
Amy H HerringDepartment of Biostatistics, School of Public Health, University of North Carolina, Chapel Hill, NC, USA.
Lan KongDepartment of Public Health Sciences, Pennsylvania State University, Hershey, PA, USA.
Richard B MailmanDepartment of Neurology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA; Department of Pharmacology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA.
Xuemei HuangDepartment of Neurology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA; Department of Pharmacology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA; Departments of Radiology, Pennsylvania State University College of Medicine-Milton S. Hershey Medical Center, Hershey, PA, USA; Department of Kinesiology, Pennsylvania State University, University Park, PA, USA. Electronic address: Xuemei@psu.edu.

Funding

Biostatstics for Research in Environmental HealthT32ES007018 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Stephanie Engel, Rebecca Fry · 1985 to 2026
$31.3M
WRITING AND THE DAILY EXPERIENCE OF ILLNESSM01RR010732 · NCRR · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI DONG, CHENG · 1995 to 2009
$29.8M
Research Services CoreP2CHD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KAREN B GUZZO · 2015 to 2026
$9.6M
Regional Brain Manganese Accumulation and Functional Consequences in WeldersR01ES019672 · NIEHS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HUANG, XUEMEI · 2011 to 2021
$5.9M
Multimodal MRI Markers of Nigrostriatal Pathology in Parkinson's DiseaseU01NS082151 · NINDS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HUANG, XUEMEI · 2012 to 2016
$4.2M
NCRR NIH HHS M01 RR010732NICHD NIH HHS P2C HD050924NIEHS NIH HHS R01 ES019672NIEHS NIH HHS T32 ES007018NINDS NIH HHS U01 NS082151
6 · The paper itself

Abstract

objectivesWe demonstrated recently that the T1 relaxation rate (R1) captured short-term Mn exposure in welders with chronic, relatively low exposure levels in a cross-sectional study. In the current study, we used a longitudinal design to examine whether R1 values reflect the short-term dynamics of Mn exposure.

methodsTwenty-nine welders were evaluated at baseline and 12 months. Occupational questionnaires estimated short-term welding exposure using welding hours in the 90days prior to each study visit (HrsW

resultsChanges in welding hours (HrsW DISCUSSION: Changes in R1 values correlated with changes in the short-term welding exposure estimate, but not with more traditional measures of Mn exposure (blood Mn levels or PI). These results suggest that R1 may serve as a useful marker to capture the short-term dynamics in Mn brain accumulation related to welding exposure.

Indexed as

Magnetic Resonance ImagingWeldingAdultAir Pollutants, OccupationalBrainCross-Sectional StudiesHumansLongitudinal StudiesMaleManganeseMiddle AgedStatistics, NonparametricTime FactorsAir Pollutants, OccupationalManganeseLongitudinalManganeseMRIR1Welders

Identifiers

PMID27567731
PMCPMC5123898

What OpenQuestion holds

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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.