Evidence map›Paper›PMID 34075059›Full record

ArticleNPJ microgravity2021

Bone health in spacefaring rodents and primates: systematic review and meta-analysis.

Jingyan Fu, Matthew Goldsmith, Sequoia D Crooks, Sean F Condon, Martin Morris, Svetlana V Komarova

Abstract read
In one paragraph

Article in NPJ microgravity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

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

  1. Pooled it
  2. Article
  3. Botulinum toxin (A)-induced bone loss is associated with increased blood velocity and reduced vascular bone porosity.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
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  6. Resistance and Aerobic Preconditioning Delays Unloading-Induced Multisystemic Physiological Changes: The NEBULA Project.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
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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

6 authors.

Jingyan Fu *Shriners Hospitals for Children - Canada, Montréal, Canada.
Matthew Goldsmith *Shriners Hospitals for Children - Canada, Montréal, Canada.
Sequoia D CrooksShriners Hospitals for Children - Canada, Montréal, Canada.
Sean F CondonShriners Hospitals for Children - Canada, Montréal, Canada.
Martin MorrisSchulich Library of Physical Sciences, Life Sciences and Engineering, McGill University, Montréal, Canada.ORCID http://orcid.org/0000-0002-5659-2995
Svetlana V KomarovaShriners Hospitals for Children - Canada, Montréal, Canada. svetlana.komarova@mcgill.ca.ORCID http://orcid.org/0000-0003-3570-3147

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Animals in space exploration studies serve both as a model for human physiology and as a means to understand the physiological effects of microgravity. To quantify the microgravity-induced changes to bone health in animals, we systematically searched Medline, Embase, Web of Science, BIOSIS, and NASA Technical reports. We selected 40 papers focusing on the bone health of 95 rats, 61 mice, and 9 rhesus monkeys from 22 space missions. The percentage difference from ground control in rodents was -24.1% [Confidence interval: -43.4, -4.9] for trabecular bone volume fraction and -5.9% [-8.0, -3.8] for the cortical area. In primates, trabecular bone volume fraction was lower by -25.2% [-35.6, -14.7] in spaceflight animals compared to GC. Bone formation indices in rodent trabecular and cortical bone were significantly lower in microgravity. In contrast, osteoclast numbers were not affected in rats and were variably affected in mice. Thus, microgravity induces bone deficits in rodents and primates likely through the suppression of bone formation.

Identifiers

PMID34075059
PMCPMC8169759

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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.