Fiber-type shifting in sarcopenia of old age: proteomic profiling of the contractile apparatus of skeletal muscles

P Dowling, S Gargan, D Swandulla… - International Journal of …, 2023 - mdpi.com
The progressive loss of skeletal muscle mass and concomitant reduction in contractile
strength plays a central role in frailty syndrome. Age-related neuronal impairments are …

Regulating striated muscle contraction: Through thick and thin

E Brunello, L Fusi - Annual Review of Physiology, 2024 - annualreviews.org
Force generation in striated muscle is primarily controlled by structural changes in the actin-
containing thin filaments triggered by an increase in intracellular calcium concentration …

Titin governs myocardial passive stiffness with major support from microtubules and actin and the extracellular matrix

CM Loescher, JK Freundt, A Unger, AL Hessel… - Nature Cardiovascular …, 2023 - nature.com
Myocardial passive stiffness is crucial for the heart's pump function and is determined by
mechanical elements, including the extracellular matrix and cytoskeletal filaments; however …

Stretching the story of titin and muscle function

WA Linke - Journal of biomechanics, 2023 - Elsevier
The discovery of the giant protein titin, also known as connectin, dates almost half a century
back. In this review, I recapitulate major advances in the discovery of the titin filaments and …

Myosin-binding protein C regulates the sarcomere lattice and stabilizes the OFF states of myosin heads

AL Hessel, NM Engels, MN Kuehn, D Nissen… - Nature …, 2024 - nature.com
Muscle contraction is produced via the interaction of myofilaments and is regulated so that
muscle performance matches demand. Myosin-binding protein C (MyBP-C) is a long and …

Stretch harmonizes sarcomere strain across the cardiomyocyte

J Li, J Sundnes, Y Hou, M Laasmaa, M Ruud… - Circulation …, 2023 - Am Heart Assoc
BACKGROUND: Increasing cardiomyocyte contraction during myocardial stretch serves as
the basis for the Frank-Starling mechanism in the heart. However, it remains unclear how …

The importance of serial sarcomere addition for muscle function and the impact of aging

A Hinks, TJ Hawke, MV Franchi… - Journal of Applied …, 2023 - journals.physiology.org
During natural aging, skeletal muscle experiences impairments in mechanical performance
due, in part, to changes in muscle architecture and size, notably with a loss of muscle cross …

Remodeling of skeletal muscle myosin metabolic states in hibernating mammals

CTA Lewis, EG Melhedegaard, MM Ognjanovic… - Elife, 2024 - elifesciences.org
Hibernation is a period of metabolic suppression utilized by many small and large mammal
species to survive during winter periods. As the underlying cellular and molecular …

Muscle mechanics and thick filament activation: an emerging two-way interaction for the vertebrate striated muscle fine regulation

L Marcucci - International Journal of Molecular Sciences, 2023 - mdpi.com
Contraction in striated muscle is classically described as regulated by calcium-mediated
structural changes in the actin-containing thin filaments, which release the binding sites for …

Mechanisms of myosin II force generation: insights from novel experimental techniques and approaches

DE Rassier, A Månsson - Physiological Reviews, 2025 - journals.physiology.org
Myosin II is a molecular motor that converts chemical energy derived from ATP hydrolysis
into mechanical work. Myosin II isoforms are responsible for muscle contraction and a range …