Evidence map›Paper›PMID 26908520›Full record

ArticleBMJ open2016

Glucose intolerance associated with hypoxia in people living at high altitudes in the Tibetan highland.

Kiyohito Okumiya, Ryota Sakamoto, Yasuko Ishimoto, Yumi Kimura, Eriko Fukutomi, Motonao Ishikawa, Kuniaki Suwa, Hissei Imai, Wenling Chen, Emiko Kato and 21 more

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
5.4field-weighted citation impact, top 5% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

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  16. Better understanding the neurobiology of primary lateral sclerosis.Amyotrophic lateral sclerosis & frontotemporal degeneration · 2020
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  20. Early-onset diabetes: an epidemic in China.Frontiers of medicine · 2018
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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

31 authors at 11 institutions in 2 countries.

Kiyohito OkumiyaResearch Department, Research Institute for Humanity and Nature, Kyoto, Japan Center for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Ryota SakamotoCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan Hakubi Center for Advanced Research, Kyoto University, Kyoto, Japan.
Yasuko IshimotoFaculty of Medicine, Public Health Nursing, School of Nursing, Mie University, Tsu, Mie, Japan.
Yumi KimuraCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Eriko FukutomiCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Motonao IshikawaDepartment of Medicine, Tokyo Women's Medical University, Medical Center East, Tokyo, Japan.
Kuniaki SuwaDepartment of Medicine, Tokyo Women's Medical University, Medical Center East, Tokyo, Japan.
Hissei ImaiHealth Promotion and Human Behavior, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Wenling ChenCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Emiko KatoCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Masahiro NakatsukaSakakibara Hakuho Hospital, Tsu, Mie, Japan.
Yoriko KasaharaCollege of Nursing, Kanto Gakuin University, Yokohama, Japan.
Michiko FujisawaCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Taizo WadaCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Hongxin WangAffiliated Hospital of Qinghai University, Xining, Qinghai, China.
Qingxiang DaiAffiliated Hospital of Qinghai University, Xining, Qinghai, China.
Huining XuAffiliated Hospital of Qinghai University, Xining, Qinghai, China.
Haisheng QiaoQinghai Academy of Animal and Veterinary Sciences, Xining, Qinghai, China.
Ri-Li GeResearch Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China.
Tsering NorbooLadakh Institute of Prevention, Ladakh, India.
Norboo TseringLadakh Institute of Prevention, Ladakh, India.
Yasuyuki KosakaGraduate School of Asian and African Area Studies, Kyoto University, Kyoto, Japan.
Mitsuhiro NoseCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Takayoshi YamaguchiNational Institute for Agro-Environmental Sciences, Ibaragi, Japan.
Toshihiro TsukiharaFaculty of Education and Regional Studies, University of Fukui, Fukui, Japan.
Kazuo AndoCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Tetsuya InamuraThe Open University of Japan, Chiba, Japan.
Shinya TakedaGraduate School of Asian and African Area Studies, Kyoto University, Kyoto, Japan.
Masayuki IshineYasugi Clinic, Shimane, Japan.
Kuniaki OtsukaDepartment of Medicine, Tokyo Women's Medical University, Medical Center East, Tokyo, Japan Chronomics & Gerontology, Tokyo Women's Medical University, Tokyo, Japan.
Kozo MatsubayashiCenter for Southeast Asian Studies, Kyoto University, Kyoto, Japan.
Kyoto University · JPQinghai University Affiliated Hospital · CNQinghai University · CNTokyo Women's Medical University Adachi Medical Center · JPKanto Gakuin University · JPMie University · JPNational Institute for Agro-Environmental Sciences · JPSakakibara Hospital · JPThe Open University of Japan · JPTokyo Women's Medical University · JPUniversity of Fukui · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo clarify the association between glucose intolerance and high altitudes (2900-4800 m) in a hypoxic environment in Tibetan highlanders and to verify the hypothesis that high altitude dwelling increases vulnerability to diabetes mellitus (DM) accelerated by lifestyle change or ageing.

designCross-sectional epidemiological study on Tibetan highlanders.

participantsWe enrolled 1258 participants aged 40-87 years. The rural population comprised farmers in Domkhar (altitude 2900-3800 m) and nomads in Haiyan (3000-3100 m), Ryuho (4400 m) and Changthang (4300-4800 m). Urban area participants were from Leh (3300 m) and Jiegu (3700 m).

main outcome measureParticipants were classified into six glucose tolerance-based groups: DM, intermediate hyperglycaemia (IHG), normoglycaemia (NG), fasting DM, fasting IHG and fasting NG. Prevalence of glucose intolerance was compared in farmers, nomads and urban dwellers. Effects of dwelling at high altitude or hypoxia on glucose intolerance were analysed with the confounding factors of age, sex, obesity, lipids, haemoglobin, hypertension and lifestyle, using multiple logistic regression.

resultsThe prevalence of DM (fasting DM)/IHG (fasting IHG) was 8.9% (6.5%)/25.1% (12.7%), respectively, in all participants. This prevalence was higher in urban dwellers (9.5% (7.1%)/28.5% (11.7%)) and in farmers (8.5% (6.1%)/28.5% (18.3%)) compared with nomads (8.2% (5.7%)/15.7% (9.7%)) (p=0.0140/0.0001). Dwelling at high altitude was significantly associated with fasting IHG+fasting DM/fasting DM (ORs for >4500 and 3500-4499 m were 3.59/4.36 and 2.07/1.76 vs <3500 m, respectively). After adjusting for lifestyle change, hypoxaemia and polycythaemia were closely associated with glucose intolerance.

conclusionsSocioeconomic factors, hypoxaemia and the effects of altitudes >3500 m play a major role in the high prevalence of glucose intolerance in highlanders. Tibetan highlanders may be vulnerable to glucose intolerance, with polycythaemia as a sign of poor hypoxic adaptation, accelerated by lifestyle change and ageing.

Indexed as

AltitudeAdultAgedAged, 80 and overAgingComorbidityCross-Sectional StudiesDiabetes MellitusFemaleGlucose IntoleranceHumansHypoxiaLife StyleMaleMiddle AgedPrevalenceALTITUDE MEDICINEEPIDEMIOLOGY

Identifiers

PMID26908520
PMCPMC4769430
OpenAlexW2339585302

What OpenQuestion holds

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LicenceCC BY-NC
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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.