Sarcomere length and myofibril
diameter were measured using electron micrograph images of longitudinal sections of L.
As a comparison with abalone, red meat muscle tissue consists of contractible myofibrils
assembled into parallel fibrous bundles interconnected by collagen.
Research muscle contraction and make several drawings showing how the myofibril
2a); whereas in DXR-treated mice there was loss of myofibrils
and focal cytoplasmic vacuolization in about 15% of cells (grade 2) (Fig.
These accumulations have been observed in the central parts of the cell close to the nucleus, but most often they occurred in sarcoplasmic pockets between the plasma membrane and the peripheral myofibrils
. The granules were spherical.
Furthermore, when the pH reaches the isoelectric point (pi) of the major proteins (pH = 5.4), the result is a reduced amount of water that can be attracted and held by the protein , and a reduced repulsion of structures within the myofibril
. Water moves from the myofibril
into the extramyofibrillar spaces, where it eventually is lost from the muscle cell .
CCLs are defined by the presence of a peripheral zone of normal appearance and a central zone characterized by myofibril
misalignment and mitochondrial edema, as observed in cross-sections of muscle fibers (10).
The cytoskeletal structure of myofibril
is highly differentiated and forms the scaffold sustaining cardiomyocytes to perform contractile function [17-19].
On the other hand, XOI pretreatment in the IR rats showed scanty areas of myofibril
loss with necrosis with little edema and inflammatory cell infiltration.
MANRIQUE (2015) described Myxobolus parasitizing skeletal muscle in Piaractus mesopotamicus (HOLMBERG, 1887); although, in contrast with the present study, only myofibril
degeneration was observed in this species rather than the inflammatory infiltrates detected in R.
Meat was analyzed for color, pH, cooking losses, shear force, water holding capacity, lipid oxidation, sarcomere length and myofibril