Evidence map›Paper›PMID 33469878›Full record

ArticleReproductive sciences (Thousand Oaks, Calif.)2021

Protective Effects from the Ischemic/Hypoxic Stress Induced by Labor in the High-Altitude Tibetan Placenta.

Wuren Tana, Tenzing Noryung, Graham J Burton, Martha Tissot van Patot, Ge Ri-Li

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Reproductive sciences (Thousand Oaks, Calif.), 2021. 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.

  1. Fetal growth and congenital heart disease at high altitude.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  2. Article
  3. Placental Adaptation to Hypoxia: The Case of High-Altitude Pregnancies.International journal of environmental research and public health · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Fetal growth, high altitude, and evolutionary adaptation: a new perspective.American journal of physiology. Regulatory, integrative and comparative physiology · 2021
    Article
  8. 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

5 authors.

Wuren TanaResearch Center for High Altitude Medicine, Qinghai University, Xining, 810001, Qinghai, China. tanna.mgl@gmail.com.ORCID 0000-0002-9827-7408
Tenzing NoryungResearch Center for High Altitude Medicine, Qinghai University, Xining, 810001, Qinghai, China.
Graham J BurtonCentre for Trophoblast Research, University of Cambridge, Cambridge, UK.
Martha Tissot van Patot, Fort Collins, CO, USA.
Ge Ri-LiResearch Center for High Altitude Medicine, Qinghai University, Xining, 810001, Qinghai, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Labor and vaginal delivery cause acute ischemic/hypoxic insult to the placenta. Previous studies demonstrate that placentas from high altitude non-natives showed blunted responses to ischemic/hypoxic insult caused by labor and vaginal birth, and there were some differences in the ATP/ADP production ratio. We hypothesized that adapted highlanders would not have a stress response to the acute hypoxia/ischemia of labor. Tibetan laboring (n = 10) and non-laboring (n = 5) and European descendants laboring (n = 10) and non-laboring (n = 5) high-altitude placentas were analyzed using genome-wide expression array analysis. There was no evidence for ischemic/hypoxic stress in high-altitude Tibetan laboring as compared with non-laboring placentas, while there were differences in gene expression between laboring and non-laboring placentas from high-altitude European descendants. Our results provide evidence for adaptation to acute hypoxic ischemic insult caused by labor and vaginal birth in placentas in a high-altitude native Tibetan population.

Indexed as

AcclimatizationAltitudeLabor, ObstetricParturitionPlacental CirculationAltitude SicknessFemaleGene Expression ProfilingGene Expression RegulationGenome-Wide Association StudyHumansIschemiaOligonucleotide Array Sequence AnalysisPlacentaPregnancyTibetHigh altitudeLaborPlacentaTibetan

Identifiers

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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.