ArticleThe journal of histochemistry and cytochemistry : official journal of the Histochemistry Society2003
Expression of Myosin heavy chain isoforms in rat soleus muscle spindles after 19 days of hypergravity.
Article in The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 6 citations in OpenAlex.
- Co-expression of MyHC-15 with other known isoforms in rat muscle spindles.European journal of histochemistry : EJH · 2025Article
- A new device combining mechanical stimulation of plantar sole and Achilles' tendon to alleviate the consequences of muscle deconditioning.Medical & biological engineering & computing · 2016Article
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3 authors.
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Abstract
The aim of this study was to determine whether a period of 19 days in hypergravity was long enough to induce changes in the expression of myosin heavy chain (MyHC) isoforms in the muscle spindles. The soleus muscle of 10 male Wistar rats (control: CONT, n=5; hypergravity: HG, n=5) was frozen, cut into serial sections, and labeled with antibodies against MyHCs: I, IIA, IIA + IIX + IIB, slow-tonic, and alpha-cardiac. Forty CONT and 45 HG spindles were analyzed. The results from HG spindles compared to CONT showed that there was no change in the cross-sectional area of intrafusal fibers. However, along the entire length of B1 fibers, the expression of both MyHC I and alpha-cardiac was increased significantly, whereas the labeling against MyHC IIA and MyHC slow-tonic was decreased. In B2 fibers, the labeling against MyHC IIA (region A), slow-tonic (region A), and fast myosins (regions A-C) was statistically decreased. In chain fibers, the labeling against both MyHC IIA and fast MyHC was reduced significantly. We conclude that hypergravity has a real impact on the MyHC content in the muscle spindles and induces some inverse changes of those observed in hypogravity for MyHCs I, alpha-cardiac, and slow-tonic.
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