Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

Marie Mortreux; Daniela Riveros; Mary  L. Bouxsein; Seward  B. Rutkove

doi:10.3791/59327

Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

JoVE Journal
Behavior

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JoVE Journal Behavior

Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

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05:54 min

April 4, 2019

DOI: 10.3791/59327-v

Marie Mortreux¹, Daniela Riveros¹, Mary L. Bouxsein², Seward B. Rutkove¹

¹Department of Neurology,Harvard Medical School - Beth Israel Deaconess Medical Center, ²Department of Orthopaedics,Harvard Medical School - Beth Israel Deaconess Medical Center

Overview

This study introduces a novel ground-based analogue model that simulates a space mission, including a journey to zero gravity and a stay on Mars. The model allows for a comprehensive assessment of physiological changes in rats during these hypo-gravitational conditions.

Key Study Components

Area of Science

Neuroscience
Physiology
Aerospace Medicine

Background

Previous models focused on either hindlimb unloading or partial weight-bearing.
This study aims to mimic the conditions of a Mars mission.
Understanding physiological responses is crucial for astronaut health.
Ground-based models provide a controlled environment for research.

Purpose of Study

To assess the physiological state of rats during simulated space conditions.
To explore the effects of varying unloading levels on behavior and performance.
To provide insights into the challenges astronauts may face on Mars.

Methods Used

Innovative ground-based analogue model for simulating space missions.
Longitudinal assessment of physiological changes in rats.
Single apparatus for multiple unloading levels.
Behavioral and performance evaluations during the study.

Main Results

Demonstrated the feasibility of simulating a Mars mission in a laboratory setting.
Identified physiological changes associated with different gravity levels.
Provided a framework for future research on astronaut health.
Highlighted the importance of understanding stress and performance under unloading conditions.

Conclusions

The model offers a unique opportunity to study the effects of hypo-gravity.
Findings may inform strategies to mitigate risks for astronauts.
Further research is needed to explore the full range of physiological changes.

Frequently Asked Questions

What is the main advantage of this model?

The model allows for exposure to successive unloading levels in a single environment.

Who is demonstrating the procedure?

Daniela Riveros, a Research Fellow in the laboratory, will demonstrate the procedure.

What physiological aspects can be studied using this model?

The model can help explore behavior, memory, performance, and stress responses.

How does this model contribute to astronaut health research?

It provides insights into the physiological challenges astronauts may face during missions.

What are the implications of this research?

The findings could help develop strategies to ensure astronaut well-being on long missions.

By using an innovative ground-based analogue model, we are able to simulate a space mission including a trip to (0 g) and a stay on Mars (0.38 g) in rats. This model allows for a longitudinal assessment of the physiological changes occurring during the two hypo-gravitational stages of the mission.

Our protocol offers a significant advantage by creating the possibility to expose animals to successive unloading levels. In the past, ground-based models have used either hindlimb unloading or partial weight-bearing separately. The main advantage of this technique is the use of a single apparatus and environment to provide numerous possibilities such as mimicking a trip to, and short stay on Mars.

This model will help understand the physiological state upon landing on Mars and the physiological challenges for astronauts exposed to several unloading levels during their mission. This model could help researchers explore a wide range of physiological changes including but not limited to behavior, memory, performance or stress. Demonstrating the procedure will be Daniela Riveros, a Research Fellow in our laboratory.

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