Evidence map›Paper›PMID 27633944›Full record

ArticleScientific reports2016

Reversible Brain Abnormalities in People Without Signs of Mountain Sickness During High-Altitude Exposure.

Cunxiu Fan, Yuhua Zhao, Qian Yu, Wu Yin, Haipeng Liu, Jianzhong Lin, Tianhe Yang, Ming Fan, Luobu Gesang, Jiaxing Zhang

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
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  6. Longitudinal assessment of retinal and visual pathway electrophysiology and structure after high altitude exposure.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
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  20. Hypoxia tolerance in the Norrin-deficient retina and the chronically hypoxic brain studied at single-cell resolution.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
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 1 country.

Cunxiu FanDepartment of Physiology, Medical College of Xiamen University, Xiamen 361102, Fujian, China.
Yuhua ZhaoInstitute of high altitude medicine, Tibet Autonomous Region People's Hospital, Lasa 850000, Tibet Autonomous Region, China.
Qian YuDepartment of Physiology, Medical College of Xiamen University, Xiamen 361102, Fujian, China.
Wu YinDepartment of Radiology, Tibet Autonomous Region People's Hospital, Lasa 850000, Tibet Autonomous Region, China.
Haipeng LiuDepartment of Radiology, Tibet Autonomous Region People's Hospital, Lasa 850000, Tibet Autonomous Region, China.
Jianzhong LinMagnetic Resonance Center, Zhongshan Hospital Xiamen University, Xiamen 361004, Fujian, China.
Tianhe YangMagnetic Resonance Center, Zhongshan Hospital Xiamen University, Xiamen 361004, Fujian, China.
Ming FanDepartment of Brain Protection and Plasticity, Institute of Basic Medical Sciences, Beijing 100850, China.
Luobu GesangInstitute of high altitude medicine, Tibet Autonomous Region People's Hospital, Lasa 850000, Tibet Autonomous Region, China.
Jiaxing ZhangDepartment of Physiology, Medical College of Xiamen University, Xiamen 361102, Fujian, China.
Tibet Autonomous Region People's Hospital · CNXiamen University · CNZhongshan Hospital of Xiamen University · CNInstitute of Basic Medical Sciences of the Chinese Academy of Medical Sciences

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large proportion of lowlanders ascending to high-altitude (HA) show no signs of mountain sickness. Whether their brains have indeed suffered from HA environment and the persistent sequelae after return to lowland remain unknown. Thirty-one sea-level college students, who had a 30-day teaching on Qinghai-Tibet plateau underwent MRI scans before, during, and two months after HA exposure. Brain volume, cortical structures, and white matter microstructure were measured. Besides, serum neuron-specific enolase (NSE), C-reactive protein, and interleukin-6 and neuropsychiatric behaviors were tested. After 30-day HA exposure, the gray and white matter volumes and cortical surface areas significantly increased, with cortical thicknesses and curvatures changed in a wide spread regions; Anisotropy decreased with diffusivities increased in multiple sites of white matter tracts. Two months after HA exposure, cortical measurements returned to basal level. However, increased anisotropy with decreased diffusivities was observed. Behaviors and serum inflammatory factor did not significant changed during three time-point tests. NSE significantly decreased during HA but increased after HA exposure. Results suggest brain swelling occurred in people without neurological signs at HA, but no negative sequelae in cortical structures and neuropsychiatric functions were left after the return to lowlands. Reoxygenation changed white matter microstructure.

Indexed as

AltitudeAltitude SicknessAnisotropyBody TemperatureBrainDiffusionFemaleHumansLungMaleNeuropsychological TestsOrgan SizeOxygenYoung AdultOxygen

Identifiers

PMID27633944
PMCPMC5025655
OpenAlexW2518724950

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.