Influence of Social Isolation During Prolonged Simulated Weightlessness by Hindlimb Unloading.
HPA axis
bone loss
hindlimb unloading
immune system
microgravity model
muscle atrophy
social isolation
spaceflight
Journal
Frontiers in physiology
ISSN: 1664-042X
Titre abrégé: Front Physiol
Pays: Switzerland
ID NLM: 101549006
Informations de publication
Date de publication:
2019
2019
Historique:
received:
30
03
2019
accepted:
22
08
2019
entrez:
2
10
2019
pubmed:
2
10
2019
medline:
2
10
2019
Statut:
epublish
Résumé
The hindlimb unloading (HU) model has been used extensively to simulate the cephalad fluid shift and musculoskeletal disuse observed in spaceflight with its application expanding to study immune, cardiovascular and central nervous system responses, among others. Most HU studies are performed with singly housed animals, although social isolation also can substantially impact behavior and physiology, and therefore may confound HU experimental results. Other HU variants that allow for paired housing have been developed although no systematic assessment has been made to understand the effects of social isolation on HU outcomes. Hence, we aimed to determine the contribution of social isolation to tissue responses to HU. To accomplish this, we developed a refinement to the traditional NASA Ames single housing HU system to accommodate social housing in pairs, retaining desirable features of the original design. We conducted a 30-day HU experiment with adult, female mice that were either singly or socially housed. HU animals in both single and social housing displayed expected musculoskeletal deficits versus housing matched, normally loaded (NL) controls. However, select immune and hypothalamic-pituitary-adrenal (HPA) axis responses were differentially impacted by the HU social environment relative to matched NL controls. HU led to a reduction in % CD4
Identifiants
pubmed: 31572207
doi: 10.3389/fphys.2019.01147
pmc: PMC6753329
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1147Informations de copyright
Copyright © 2019 Tahimic, Paul, Schreurs, Torres, Rubinstein, Steczina, Lowe, Bhattacharya, Alwood, Ronca and Globus.
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