ArticleFrontiers in physiology2020
Partial Weight-Bearing in Female Rats: Proof of Concept in a Martian-Gravity Analog.
Article in Frontiers in physiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers.
What it found
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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.
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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.
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Who cites it
7 citing papers in PubMed.
- Estrogen Receptor Alpha (ERα) Is Involved in Resveratrol-Mediated Muscle Preservation During Mechanical Unloading in Male Rats.Muscles (Basel, Switzerland) · 2026Article
- Sex differences in muscle health in simulated micro- and partial-gravity environments in rats.Sports medicine and health science · 2023Article
- Evaluating the effects of low-dose simulated galactic cosmic rays on murine hippocampal-dependent cognitive performance.Frontiers in neuroscience · 2022Article
- Hindlimb suspension in Wistar rats: Sex-based differences in muscle response.Physiological reports · 2021Article
- The individual and combined effects of spaceflight radiation and microgravity on biologic systems and functional outcomes.Journal of environmental science and health. Part C, Toxicology and carcinogenesis · 2021Article
- Approaching Gravity as a Continuum Using the Rat Partial Weight-Bearing Model.Life (Basel, Switzerland) · 2020Review
- Using Electrical Impedance Myography as a Biomarker of Muscle Deconditioning in Rats Exposed to Micro- and Partial-Gravity Analogs.Frontiers in physiology · 2020Article
Corrections and comments
- Erratum issued
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many studies have investigated the physiological response to microgravity in both astronauts and animals. However, while space agencies have sought to deploy more women on their missions; animal models rarely include females studies or comparisons between males and females. Therefore, we exposed adult female rats to 2 weeks of partial weight-bearing at either 100% of their normal loading (PWB100) or 40% of their normal loading (PWB40), corresponding to Martian gravity-analog, and assess muscle function, force and histomorphometry. Females exposed to PWB showed an 11.62% decline in hindlimb grip force associated with an 11.84% decrease in soleus myofiber size after 14 days of exposure, while maintaining normal blood oxygenation and stress levels. This pilot study represents the first experiment designed to understand the muscular disuse associated with a partial reduction in mechanical loading in female rats, and the first step needed to develop successful mitigating strategies. NEW AND NOTEWORTHY: This research article describes the first use of quadrupedal partial weight-bearing in female rats. This study demonstrates the feasibility of partial gravity analogs in females and allows for future investigations about the impact of sex on muscle deconditioning due to reduced mechanical loading.
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Registered trials
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