myofibril


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Related to myofibril: myofilament, sarcoplasmic reticulum

my·o·fi·bril

 (mī′ə-fī′brəl, -fĭb′rəl)
n.
Any of the threadlike fibrils that make up the contractile part of a striated muscle fiber and are made up chiefly of actin and myosin filaments.

myofibril

(ˌmaɪəˈfaɪbrəl)
n
(Biology) one of cylindrical organelles found in muscle fibre

my•o•fi•bril

(ˌmaɪ əˈfaɪ brəl, -ˈfɪb rəl)

n.
a contractile fibril of skeletal muscle, composed mainly of actin and myosin.
[1895–1900]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.myofibril - one of many contractile filaments that make up a striated muscle fiber
sarcoplasm - the cytoplasm of a striated muscle fiber
striated muscle cell, striated muscle fiber - an elongated contractile cell in striated muscle tissue
sarcomere - one of the segments into which a myofibril is divided
fibril, filament, strand - a very slender natural or synthetic fiber
Translations

my·o·fi·bril

n. miofibrilla, fibrilla diminuta delgada del tejido muscular.
References in periodicals archive ?
Cardiac troponin I (cTnI) mutation-caused myofibril Ca2+ hypersensitivity has been shown to be associated with impaired diastolic function.
Water moves from the myofibril into the extramyofibrillar spaces, where it eventually is lost from the muscle cell [25].
Histopathologic examination of the latter lesions revealed myofibril necrosis with Zenker's degeneration and a heterophilic, lymphocytic, plasmacytic inflammatory reaction.
The level of serum cTn-I was increased in three to five hours, followed by continuous disruption and destruction of myofibril, and cTn-I was constantly released, therefore, cTn-I is a serum marker of high sensitivity and specificity for reflection of myocardial cell damage.
In muscle cells of the diseased crabs, condensation and margination of nuclear chromatin (Figure 5) injury of nuclear membranes, and mitochondria disintegration could be observed, moreover, myofibril arrangement was loose and there were many vesicles between myofibril.
The decrease in the number and diameter of fibers in malnourished young animals occurs due to the loss of myofibril and consequently loss of fibers.
Benidipine prevents oxidative stress, inflammatory changes and apoptosis related myofibril damage in isoproterenol-induced myocardial infarction in rats.
The SDS-PAGE pattern showed the presence of the myosin heavy chain (MHC) in the sarcoplasmic fraction, indicating high solubility of squid myofibril proteins even at low ionic strength.
At autopsy multiple muscle biopsies showed extensive myofibril loss, degeneration/regeneration, and calcific deposits.
Skipping of the exon with Ser14450fsX4 mutation in patient cardiomyocytes improved myofibril assembly and stability and normalized expression of TTN regulated genes.
Our light and electron microscopic assessments demonstrated hypertrophy, vacuolar degeneration, focal necrosis, fibrosis, myofibril disarray and partial fragmentation, distortion of mitochondrial structure, swelling hyperplasia, and local vacuolation in cardiomyocytes in rat with experimental diabetes and significant improvement of these abnormalities in diabetic rats after Zn treatment (Figure 1).