Results 101 to 110 of about 35,307 (294)

microRNA-1 regulates sarcomere formation and suppresses smooth muscle gene expression in the mammalian heart

open access: yeseLife, 2013
microRNA-1 (miR-1) is an evolutionarily conserved, striated muscle-enriched miRNA. Most mammalian genomes contain two copies of miR-1, and in mice, deletion of a single locus, miR-1-2, causes incompletely penetrant lethality and subtle cardiac defects ...
Amy Heidersbach   +7 more
doaj   +1 more source

Sarcomere motion in isolated cardiac cells

open access: yes, 1979
Computerized image-analysis techniques have been employed to examine the sarcomere dynamics of isolated mammalian cardiac myocytes. The cells were prepared by perfusion of adult rabbit hearts with hyaluronidase-collagenase solutions; they exhibited ...
M. Fry   +4 more
core   +1 more source

Multi‐method analysis for the three‐dimensional reconstruction of muscle fascicles from DiceCT datasets

open access: yesThe Anatomical Record, EarlyView.
Abstract Muscle architecture is a major determinant of muscle performance and, in mammalian lineages, has been correlated with both feeding ecology and locomotor behaviors. Over the past decade, contrast‐enhanced micro‐CT (DiceCT) has emerged as an alternative to traditional dissection‐based measurement.
Aleksandra Ratkiewicz   +5 more
wiley   +1 more source

Mechanical signaling in the pathophysiology of critical illness myopathy

open access: yesFrontiers in Physiology, 2016
The complete loss of mechanical stimuli of skeletal muscles, i.e., the loss of external strain, related to weight bearing, and internal strain, related to the contraction of muscle cells, is uniquely observed in pharmacologically paralyzed or deeply ...
Rebeca Corpeño Kalamgi   +2 more
doaj   +1 more source

Diaphragm in emphysematous hamsters: sarcomere adaptability

open access: yes, 1983
We investigated whether the shift in the diaphragmatic length-tension curve of emphysematous animals was due to changes in either sarcomere number or sarcomere length.
G. A. Farkas, C. Roussos
core   +1 more source

Machine Learning Models of Phase Contrast Images Predict Efficiency of Human Pluripotent Stem Cell Differentiation to Cardiomyocytes

open access: yesBiotechnology and Bioengineering, EarlyView.
Human pluripotent stem cells were differentiated to cTnT+ cardiomyocytes and imaged throughout the process using phase contrast. We predicted differentiation efficiency (cTnT+ area) from phase contrast and compared model performance with a live‐cell cTnT‐GFP reporter.
Austin K. Feeney   +6 more
wiley   +1 more source

Mitochondria‐endoplasmic reticulum organelle glue as maturation promoter for origination/dimensional dual‐cross cardiomyocytes

open access: yesBMEMat, EarlyView.
Mitochondria‐endoplasmic reticulum contact sites (MERCS) are areas where the mitochondria and endoplasmic reticulum closely interact. In this study, we utilize synthetic organelle glues to artificially engineer MERCS for regulating cardiomyocyte development, through which the immature and chemo‐plasticity issues of undifferentiated cells are addressed.
Wei Tang   +9 more
wiley   +1 more source

Titin Is Present in the Elastic Tethers That Connect Separating Anaphase Chromosomes in Crane‐Fly Spermatocytes

open access: yesCytoskeleton, EarlyView.
ABSTRACT Elastic tethers connect telomeres of separating chromosomes in anaphase of animal cells. Immunofluorescence staining of titin in crane‐fly spermatocytes, using 4 different antibodies, shows that the giant elastic protein titin seems to be a component of mitotic tethers: titin “strands” extend between separating chromosomes, connecting their ...
Demetra Economopoulos   +5 more
wiley   +1 more source

Sarcomere length.

open access: yes, 2014
Sarcomere length in the left (LV) and right ventricle (RV) of untreated preterm (solid bar), preterm + GC (glucocorticoid exposed, dotted bar) and term (open bar) piglet hearts. Mean ± SEM.
Eugenie R. Lumbers (431872)   +6 more
core   +1 more source

Fhod3 in zebrafish supports myofibril stability during growth of embryonic skeletal muscle

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Actin filament organization in cardiomyocytes critically depends on the formin Fhod3, but a role for Fhod3 in skeletal muscle development has not yet been described. Results We demonstrate here that in zebrafish mutated for one of two fhod3 paralog genes, fhod3a, skeletal muscle of the trunk appears normal through 2 days post ...
Aubrie Russell   +3 more
wiley   +1 more source

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