Evidence map›Paper›PMID 28480993›Full record

ArticleHuman brain mapping2017

Cognitive and neuroimaging changes in healthy immigrants upon relocation to a high altitude: A panel study.

Xiaoming Chen, Qian Zhang, Jiye Wang, Jie Liu, Wenbin Zhang, Shun Qi, Hui Xu, Chen Li, Jinsong Zhang, Haitao Zhao and 8 more

Abstract read
In one paragraph

Article in Human brain mapping, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
–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

41 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

18 authors.

Xiaoming ChenDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.ORCID 0000-0003-0314-1469
Qian ZhangDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Jiye WangDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Jie LiuDepartment of Radiology, General Hospital of Tibet Military Region, Lhasa, China.
Wenbin ZhangDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Shun QiDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Hui XuDepartment of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Chen LiDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Jinsong ZhangDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Haitao ZhaoDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Shanshan MengDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Dan LiDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Huanyu LuDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Michael AschnerDepartment of Molecular Pharmacology, Albert Einstein College of Medicine, New York.
Bin LiDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Hong YinDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Jingyuan ChenDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.
Wenjing LuoDepartment of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCognitive and neuroimaging changes under chronic high-altitude exposure have never been followed up and dynamically assessed.

objectivesTo investigate the cognitive and brain structural/functional alterations associated with chronic high-altitude exposure.

methodsSixty-nine college freshmen that were immigrating to Tibet were enrolled and followed up for two years. Neuropsychological tests, including verbal/visual memory and simple/recognition reaction time, were utilized to determine whether the subjects' cognitive function had changed in response to chronic high-altitude exposure. Structural magnetic resonance imaging (MRI) and resting-state functional MRI (rs-fMRI) were used to quantify brain gray matter (GM) volumes, regional homogeneity (ReHo) and functional connectivity (FC) alterations before and after exposure. Areas with changes in both GM and ReHo were used as seeds in the inter-regional FC analysis.

resultsThe subjects showed significantly lower accuracy in memory tests and longer reaction times after exposure, and neuroimaging analysis showed markedly decreased GM volumes and ReHo in the left putamen. FC analysis seeding of the left putamen showed significantly weakened FC with the superior temporal gyrus, anterior/middle cingulate gyrus and other brain regions. In addition, decreased ReHo was found in the superior temporal gyrus, superior parietal lobule, anterior cingulate gyrus and medial frontal gyrus, while increased ReHo was found in the hippocampus. Differences in ReHo/FC before and after high-altitude exposure in multiple regions were significantly correlated with the cognitive changes.

conclusionCognitive functions such as working memory and psychomotor function are impaired during chronic high-altitude exposure. The putamen may play an important role in chronic hypoxia-induced cognitive impairment. Hum Brain Mapp 38:3865-3877, 2017. © 2017 Wiley Periodicals, Inc.

Indexed as

Adaptation, PhysiologicalAltitudeAdolescentBrainBrain MappingCognitionEmigrants and ImmigrantsFemaleFollow-Up StudiesGray MatterHumansLongitudinal StudiesMagnetic Resonance ImagingMaleMemoryNeuropsychological Testscognitionhigh-altitude exposuremagnetic resonance imaging

Identifiers

PMID28480993
PMCPMC6867044

What OpenQuestion holds

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Registered trials

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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.