muscle fiber

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muscle fiber

[′məs·əl ‚fī·bər]
(histology)
The contractile cell or unit of which muscle is composed.
References in periodicals archive ?
TNF[alpha] immunoreactivity was present in myofibers of only 2 of 21 inflammatory myopathy patients who were examined.
The mdx murine model (Jackson Labs, Bar Harbor, ME) was chosen to assess the inhibitory effects of C101 on myofiber degeneration associated with dystrophin deficiency.
Spastic tail muscles recover from myofiber atrophy and myosin heavy chain transformations in chronic spinal rats.
However, there was marked myofiber disarray both in the ventricular septum and focally within the right ventricular lateral wall.
However, recent studies have demonstrated long-term detriments to the use of NSAIDs and suggest that a muted inflammatory response to injury may actually inhibit functional myofiber regeneration [6-9].
However, in vitro studies on differentiated human skeletal muscle cultures have demonstrated that mechanical load induces sarcoplasmic wounding and FGF-2 release from myofibers with a linear correlation between the degree of mechanical load and the amount of myofiber wounding and FGF-2 release (Clarke et al.
The consistent finding of myofiber necrosis raises a question about the potential role of apoptosis in the pathogenesis.
After cooking and prior to analysis, the sample was allowed to equilibrate to room temperature of 20[degrees]C and then cut into 20 mm height across to the myofiber direction by a cylinder sampler of 25.
TNF-[alpha] may contribute to atrophy through a number of mechanisms, including inhibition of protein synthesis and reduced expression of MyoD, a transcriptional regulator of myofiber gene expression and accelerated protein breakdown through activation of ubiquitin proteases and NF-[kappa]B and apoptotic cell death [47-52].
Microscopically these muscles had multiple foci of myofiber fragmentation, loss of striation, and necrosis; a mononuclear cell infiltrate was observed in muscle from two birds.
There is focal myofiber degeneration and corresponding abortive myoregeneration (not shown).