FASEB Journal, volume 35, issue 10

NOS‐dependent effects of plantar mechanical stimulation on mechanical characteristics and cytoskeletal proteins in rat soleus muscle during hindlimb suspension

Publication typeJournal Article
Publication date2021-09-27
Journal: FASEB Journal
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.8
ISSN08926638, 15306860
Biochemistry
Molecular Biology
Genetics
Biotechnology
Abstract
The study was aimed at investigating the mechanisms and structures which determine mechanical properties of skeletal muscles under gravitational unloading and plantar mechanical stimulation (PMS). We hypothesized that PMS would increase NO production and prevent an unloading‐induced reduction in skeletal muscle passive stiffness. Wistar rats were hindlimb suspended and subjected to a daily PMS and one group of stimulated animals was also treated with nitric oxide synthase (NOS) inhibitor (L‐NAME). Animals received mechanical stimulation of the feet for 4 h a day throughout 7‐day hindlimb suspension (HS) according to a scheme that mimics the normal walking of the animal. Seven‐day HS led to a significant reduction in soleus muscle weight by 25%. However, PMS did not prevent the atrophic effect induced by HS. Gravitational unloading led to a significant decrease in maximum isometric force and passive stiffness by 38% and 31%, respectively. The use of PMS prevented a decrease in the maximum isometric strength of the soleus muscle. At the same time, the passive stiffness of the soleus in the PMS group significantly exceeded the control values by 40%. L‐NAME (NOS inhibitor) administration attenuated the effect of PMS on passive stiffness and maximum force of the soleus muscle. The content of the studied cytoskeletal proteins (α‐actinin‐2, α‐actinin‐3, desmin, titin, nebulin) decreased after 7‐day HS, but this decrease was successfully prevented by PMS in a NOS‐dependent manner. We also observed significant decreases in mRNA expression levels of α‐actinin‐2, desmin, and titin after HS, which was prevented by PMS. The study also revealed a significant NOS‐dependent effect of PMS on the content of collagen‐1a, but not collagen‐3a. Thus, PMS during mechanical unloading is able to maintain soleus muscle passive tension and force as well as mRNA transcription and protein contents of cytoskeletal proteins in a NOS‐dependent manner.

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Tyganov S. et al. NOS‐dependent effects of plantar mechanical stimulation on mechanical characteristics and cytoskeletal proteins in rat soleus muscle during hindlimb suspension // FASEB Journal. 2021. Vol. 35. No. 10.
GOST all authors (up to 50) Copy
Tyganov S., Mochalova E. P., Melnikov I., Вихлянцев И. М., Ulanova A. D., Sharlo K., Mirzoev T. M., Shenkman B. NOS‐dependent effects of plantar mechanical stimulation on mechanical characteristics and cytoskeletal proteins in rat soleus muscle during hindlimb suspension // FASEB Journal. 2021. Vol. 35. No. 10.
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RIS Copy
TY - JOUR
DO - 10.1096/fj.202100783R
UR - https://doi.org/10.1096%2Ffj.202100783R
TI - NOS‐dependent effects of plantar mechanical stimulation on mechanical characteristics and cytoskeletal proteins in rat soleus muscle during hindlimb suspension
T2 - FASEB Journal
AU - Ulanova, Anna D
AU - Mochalova, Ekaterina P
AU - Tyganov, Sergey
AU - Melnikov, Ivan
AU - Вихлянцев, И. М.
AU - Sharlo, Kristina
AU - Mirzoev, Timur M.
AU - Shenkman, Boris
PY - 2021
DA - 2021/09/27 00:00:00
PB - Federation of American Societies for Experimental Biology (FASEB)
IS - 10
VL - 35
SN - 0892-6638
SN - 1530-6860
ER -
BibTex
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BibTex Copy
@article{2021_Tyganov,
author = {Anna D Ulanova and Ekaterina P Mochalova and Sergey Tyganov and Ivan Melnikov and И. М. Вихлянцев and Kristina Sharlo and Timur M. Mirzoev and Boris Shenkman},
title = {NOS‐dependent effects of plantar mechanical stimulation on mechanical characteristics and cytoskeletal proteins in rat soleus muscle during hindlimb suspension},
journal = {FASEB Journal},
year = {2021},
volume = {35},
publisher = {Federation of American Societies for Experimental Biology (FASEB)},
month = {sep},
url = {https://doi.org/10.1096%2Ffj.202100783R},
number = {10},
doi = {10.1096/fj.202100783R}
}
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