Results 21 to 30 of about 219,915 (268)

Muscle fiber atrophy

open access: yesRinsho Shinkeigaku, 2012
Muscle fibers have been classified into two major forms of red (slow twitch) and white (fast twitch) muscles. The red muscle utilizes lipid as energy source through mitochondrial metabolism and function to sustain the position against gravity (sometimes called as antigravity muscle). Under microgravity the red muscle is selectively involved.
openaire   +3 more sources

Single Muscle Fiber Proteomics Reveals Fiber-Type-Specific Features of Human Muscle Aging

open access: yesCell Reports, 2017
Skeletal muscle is a key tissue in human aging, which affects different muscle fiber types unequally. We developed a highly sensitive single muscle fiber proteomics workflow to study human aging and show that the senescence of slow and fast muscle fibers
Marta Murgia   +7 more
doaj   +1 more source

Contractile Properties of MHC I and II Fibers From Highly Trained Arm and Leg Muscles of Cross-Country Skiers

open access: yesFrontiers in Physiology, 2021
IntroductionLittle is known about potential differences in contractile properties of muscle fibers of the same type in arms and legs. Accordingly, the present study was designed to compare the force-generating capacity and Ca2+ sensitivity of fibers from
Kasper Degn Gejl   +8 more
doaj   +1 more source

Aging of Skeletal Muscle Fibers [PDF]

open access: yesAnnals of Rehabilitation Medicine, 2015
Aging has become an important topic for scientific research because life expectancy and the number of men and women in older age groups have increased dramatically in the last century. This is true in most countries of the world including the Republic of Korea and the United States. From a rehabilitation perspective, the most important associated issue
Miljkovic, Natasa   +3 more
openaire   +2 more sources

Omecamtiv mecarbil lowers the contractile deficit in a mouse model of nebulin-based nemaline myopathy.

open access: yesPLoS ONE, 2019
Nemaline myopathy (NEM) is a congenital neuromuscular disorder primarily caused by nebulin gene (NEB) mutations. NEM is characterized by muscle weakness for which currently no treatments exist.
Johan Lindqvist   +4 more
doaj   +1 more source

Reinnervation of Vastus lateralis is increased significantly in seniors (70-years old) with a lifelong history of high-level exercise

open access: yesEuropean Journal of Translational Myology, 2013
It has long been recognized that histological changes observed in aging muscle suggest that denervation contributes to muscle deterioration and that disuse accelerates the process while running activity, sustained for decades, protects against age ...
Simone Mosole   +15 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Skeletal muscle fiber plasticity: Heat shock proteins and satellite cell activation

open access: yesJournal of Physical Fitness and Sports Medicine, 2012
Skeletal muscles have defensive and regenerative systems to protect them from severe injury and/or fiber degeneration. Several stresses, including muscle-contraction during exercise and heat stress, induce the specific proteins named heat shock proteins (
Yasuharu Oishi, Tomonori Ogata
doaj   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova   +25 more
wiley   +1 more source

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