Results 21 to 30 of about 16,570 (272)

Difference in Stretching of Sarcomeres between Medial Gastrocnemius and Tibialis Anterior by Tibial Lengthening: An Experiment in Rabbits

Journal of Orthopaedic Surgery, 2006
Purpose. To compare the degree of stretching of sarcomeres—in the medial gastrocnemius versus the tibialis anterior—acutely extended by tibial lengthening. Methods.
A Kurihashi, K Tamai, K Saotome, M Takemura, A Fujiwara, S Fujita   +5 more
doaj   +1 more source

Muscle-specific stress fibers give rise to sarcomeres in cardiomyocytes

eLife, 2018
The sarcomere is the contractile unit within cardiomyocytes driving heart muscle contraction. We sought to test the mechanisms regulating actin and myosin filament assembly during sarcomere formation.
Aidan M Fenix, Abigail C Neininger, Nilay Taneja, Karren Hyde, Mike R Visetsouk, Ryan J Garde, Baohong Liu, Benjamin R Nixon, Annabelle E Manalo, Jason R Becker, Scott W Crawley, David M Bader, Matthew J Tyska, Qi Liu, Jennifer H Gutzman, Dylan T Burnette   +15 more
doaj   +1 more source

The force of the myosin motor sets cooperativity in thin filament activation of skeletal muscles

Communications Biology, 2022
Sarcomeres of Ca2 + -activated demembranated fibres of rabbit soleus muscles show that the stress exerted by each motor protein on the thin filament determines the cooperativity in thin filament activation. 
Marco Caremani, Matteo Marcello, Ilaria Morotti, Irene Pertici, Caterina Squarci, Massimo Reconditi, Pasquale Bianco, Gabriella Piazzesi, Vincenzo Lombardi, Marco Linari   +9 more
doaj   +1 more source

Myofibril Changes in the Copepod Pseudodiaptomus marinus Exposed to Haline and Thermal Stresses. [PDF]

PLoS ONE, 2016
Copepods are small crustaceans capable to survive in various aquatic environments. Their responses to changes in different external factors such as salinity and temperature can be observed at different integration levels from copepod genes to copepod ...
Ali Ibrahim, Anissa Souissi, Aymeric Leray, Laurent Héliot, Bernard Vandenbunder, Sami Souissi   +5 more
doaj   +1 more source

Induction of Proteasome Subunit Low Molecular Weight Protein (LMP)-2 Is Required to Induce Active Remodeling in Adult Rat Ventricular Cardiomyocytes

Medical Sciences, 2020
Isolated adult rat ventricular cardiomyocytes (ARVC) adapt to the two-dimensional surface of culture dishes once they are isolated from the three-dimensional heart tissue.
Antonia Petersen, Hanna Sarah Kutsche, Franziska Nippert, Rolf Schreckenberg, Rainer Schulz, Klaus-Dieter Schlüter   +5 more
doaj   +1 more source

Effects of physical training on sarcomere lengths and muscle-tendon interface of the cervical region in an experimental model of menopause

European Journal of Histochemistry, 2019
The aim of this study was to describe the structural and ultrastructural aspects of the myotendinous junction (MTJ) and the proximal and distal sarcomeres of the sternomastoid of aged Wistar rats subjected to an experimental model of menopause and ...
Carolina dos Santos Jacob, Lara Caetano Rocha, Jurandyr Pimentel Neto, Ii-sei Watanabe, Adriano Polican Ciena   +4 more
doaj   +1 more source

Myocardial ultrastructure can augment genetic testing for sporadic dilated cardiomyopathy with initial heart failure

ESC Heart Failure, 2021
Aims The aim of the present study was to consider whether the ultrastructural features of cardiomyocytes in dilated cardiomyopathy can be used to guide genetic testing.
Tsunenori Saito, Naoko Saito Sato, Kosuke Mozawa, Akiko Adachi, Yoshihiro Sasaki, Kotoka Nakamura, Eiichiro Oka, Toshiaki Otsuka, Eitaro Kodani, Kuniya Asai, Kyoichi Mizuno, Wataru Shimizu, Roberta A. Gottlieb   +12 more
doaj   +1 more source

Regulation of the evolutionarily conserved muscle myofibrillar matrix by cell type dependent and independent mechanisms

Nature Communications, 2022
Recent work has shown that mammalian muscle cells are comprised of multiple branching sarcomeres, though how this connectivity is regulated has remained unknown.
Peter T. Ajayi, Prasanna Katti, Yingfan Zhang, T. Bradley Willingham, Ye Sun, Christopher K. E. Bleck, Brian Glancy   +6 more
doaj   +1 more source

Polarization-resolved microscopy reveals a muscle myosin motor-independent mechanism of molecular actin ordering during sarcomere maturation.

PLoS Biology, 2018
Sarcomeres are stereotyped force-producing mini-machines of striated muscles. Each sarcomere contains a pseudocrystalline order of bipolar actin and myosin filaments, which are linked by titin filaments.
Olivier Loison, Manuela Weitkunat, Aynur Kaya-Çopur, Camila Nascimento Alves, Till Matzat, Maria L Spletter, Stefan Luschnig, Sophie Brasselet, Pierre-François Lenne, Frank Schnorrer   +9 more
doaj   +1 more source

Combining Ultrafast Ultrasound and High-Density EMG to Assess Local Electromechanical Muscle Dynamics: A Feasibility Study

IEEE Access, 2021
Skeletal muscles generate force, enabling movement through a series of fast electro-mechanical activations coordinated by the central nervous system.
Rick Waasdorp, Winfred Mugge, Hendrik J. Vos, Jurriaan H. de Groot, Martin D. Verweij, Nico de Jong, Alfred C. Schouten, Verya Daeichin   +7 more
doaj   +1 more source