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Muscle skeletal research

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https://www.readbyqxmd.com/read/28800153/increased-autolysis-of-%C3%AE-calpain-in-skeletal-muscles-of-chronic-alcohol-fed-rats
#1
Yulia V Gritsyna, Nikolay N Salmov, Alexander G Bobylev, Anna D Ulanova, Nikolay I Kukushkin, Zoya A Podlubnaya, Ivan M Vikhlyantsev
BACKGROUND: Proteolysis can proceed via several distinct pathways such as the lysosomal, calcium-dependent, and ubiquitin (Ub)-proteasome-dependent pathways. Calpains are the main proteases that cleave a large variety of proteins, including the giant sarcomeric proteins titin and nebulin. Chronic ethanol feeding for 6 weeks did not affect the activities of μ-calpain and m-calpain in the m. gastrocnemius. In our research, changes in μ-calpain activity were studied in the m. gastrocnemius and m...
August 11, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28798193/the-role-of-vascular-endothelial-growth-factor-b-in-metabolic-homeostasis-current-evidence
#2
Mohammad Ishraq Zafar, Juan Zheng, Wen Kong, Xiaofeng Ye, Luoning Gou, Anita Regmi, Lu-Lu Chen
It has been shown that adipose tissue and skeletal muscles of lean individuals respond to meal-induced hyperinsulinemia by increases in perfusion, the effect not observed in patients with metabolic syndrome. In conditions of hyperglycaemia and hypertriglyceridemia, this insufficient vascularization leads to the liberation of reactive oxygen species, and disruption of nitric oxide synthesis and endothelial signalling responsible for the uptake of circulating fatty acids, whose accumulation in skeletal muscles and adipose tissue is widely associated with impairment of insulin signalling...
August 10, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28795971/altered-satellite-cell-dynamics-accompany-skeletal-muscle-atrophy-during-chronic-illness-disuse-and-aging
#3
Colleen F McKenna, Christopher S Fry
PURPOSE OF REVIEW: This review explores recent research investigating the contribution of satellite cells (skeletal muscle stem cells) during muscle fiber atrophy as seen in periods of disuse, illness, and aging. RECENT FINDINGS: Studies indicate reduced satellite cell activity and density in a variety of acute and chronic conditions characterized by robust muscle wasting. The direct contribution of satellite cells to unloading/denervation and chronic illness-induced atrophy remains controversial...
August 8, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28776864/myofiber-metabolic-type-determination-by-mass-spectrometry-imaging
#4
Delphine Centeno, Annie Vénien, Estelle Pujos-Guillot, Thierry Astruc, Christophe Chambon, Laëtitia Théron
Matrix assisted laser desorption/ionization (MALDI) mass spectrometry imaging is a powerful tool that opens new research opportunities in the field of biology. In this work, predictive model was developed to discriminate metabolic myofiber types using the MALDI spectral data. Rat skeletal muscles are constituted of type I and type IIA fiber, which have an oxidative metabolism for glycogen degradation, and type IIX and type IIB fiber which have a glycolytic metabolism, present in different proportions according to the muscle function and physiological state...
August 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28774721/ontogenetic-and-functional-modularity-in-the-rodent-mandible
#5
Rachel A Menegaz, Matthew J Ravosa
The material properties of diets consumed by juvenile individuals are known to affect adult morphological outcomes. However, much of the current experimental knowledge regarding dietary effects on masticatory form is derived from studies in which individuals are fed a non-variable diet for the duration of their postweaning growth period. Thus, it remains unclear how intra-individual variation in diet, due to ontogenetic variation in feeding behaviors or seasonal resource fluctuations, affects the resulting adult morphology...
June 8, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28765836/muscle-stem-cell-and-physical-activity-what-point-is-the-debate-at
#6
Gabriele Ceccarelli, Laura Benedetti, Maria Luisa Arcari, Cecilia Carubbi, Daniela Galli
In the last 15 years, it emerged that the practice of regular physical activity reduces the risks of many diseases (cardiovascular diseases, diabetes, etc.) and it is fundamental in weight control and energy consuming to contrast obesity. Different groups proposed many molecular mechanisms as responsible for the positive effects of physical activity in healthy life. However, many points remain to be clarified. In this mini-review we reported the latest observations on the effects of physical exercise on healthy skeletal and cardiac muscle focusing on muscle stem cells...
2017: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/28763828/muscle-bone-interactions-movement-in-the-field-of-mechano-humoral-coupling-of-muscle-and-bone
#7
Christopher P Cardozo, Zachary A Graham
Cyclical, mechanical loading of bone by skeletal muscle is widely recognized as a critical determinant of bone structure and mass. A growing body of evidence indicates that substances released from skeletal muscle into the bloodstream also regulate bone mass and metabolism. In this commentary, we discuss the status of research in the area of humoral regulation of bone mass by the skeletal muscle secretome, with an emphasis on the roles of myostatin, irisin, interleukin-6, and exosomes. The interplay between muscle, bone, and other modulators of bone mass, including circadian rhythm and sympathetic tone, is also discussed...
August 1, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28762415/biocompatible-3d-printed-polymers-via-fused-deposition-modelling-direct-c2c12-cellular-phenotype-in-vitro
#8
Rowan P Rimington, Andrew J Capel, Steven D R Christie, Mark P Lewis
The capability to 3D print bespoke biologically receptive parts within short time periods has driven the growing prevalence of additive manufacture (AM) technology within biological settings, however limited research concerning cellular interaction with 3D printed polymers has been undertaken. In this work, we used skeletal muscle C2C12 cell line in order to ascertain critical evidence of cellular behaviour in response to multiple bio-receptive candidate polymers; polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET) and polycarbonate (PC) 3D printed via fused deposition modelling (FDM)...
August 1, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28760192/long-sleep-duration-is-associated-with-sarcopenia-in-korean-adults-based-on-data-from-the-2008-2011-knhanes
#9
Yu-Jin Kwon, Suk-Yong Jang, Eun-Cheol Park, A-Ra Cho, Jae-Yong Shim, John A Linton
STUDY OBJECTIVES: Sarcopenia, or loss of muscle mass, occurs with aging and results in frailty, disability, cardiovascular disease, and insulin resistance. Recently, researchers have asserted that sarcopenia is not an inevitable process, but is a modifiable condition. Adequate sleep duration is also important to maintain good physical and mental health. Therefore, the aim of our study was to examine the association between sleep duration and sarcopenia in Korean adults. METHODS: Data from 16,148 participants (7,158 men and 8,990 women) were analyzed from the 2008-2011 Korean National Health and Nutrition Examination Survey (KNHANES)...
July 28, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28759650/microrna-expression-profiles-differ-between-primary-myofiber-of-lean-and-obese-pig-breeds
#10
Dongting He, Tiande Zou, Xiangrong Gai, Jideng Ma, Mingzhou Li, Zhiqing Huang, Daiwen Chen
MicroRNAs (miRNAs) are non-coding small miRNAs ~22 nucleotides in length and play a vital role in muscle development by binding to messenger RNAs (mRNAs). Large White (LW, a lean type pig) and Meishan pigs (MS, a Chinese indigenous obese breed) have significant postnatal phenotype differences in growth rate, muscle mass and meat quality, and these differences are programmed during prenatal muscle development. Little research shed light directly on the miRNA transcriptome difference in prenatal muscles between these two distinct pig breeds...
2017: PloS One
https://www.readbyqxmd.com/read/28753945/developing-and-validating-an-age-independent-equation-using-multi-frequency-bioelectrical-impedance-analysis-for-estimation-of-appendicular-skeletal-muscle-mass-and-establishing-a-cutoff-for-sarcopenia
#11
Yosuke Yamada, Miyuki Nishizawa, Tomoka Uchiyama, Yasuhiro Kasahara, Mikio Shindo, Motohiko Miyachi, Shigeho Tanaka
Background: Appendicular skeletal muscle (or lean) mass (ALM) estimated using dual-energy X-ray absorptiometry (DXA) is considered to be a preferred method for sarcopenia studies. However, DXA is expensive, has limited portability, and requires radiation exposure. Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, and portable; thus BIA might be useful in sarcopenia investigations. However, a large variety of models have been commercially supplied by different companies, and for most consumer products, the equations estimating ALM are not disclosed...
July 19, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28744984/redox-homeostasis-and-age-related-deficits-in-neuromuscular-integrity-and-function
#12
REVIEW
Giorgos K Sakellariou, Adam P Lightfoot, Kate E Earl, Martin Stofanko, Brian McDonagh
Skeletal muscle is a major site of metabolic activity and is the most abundant tissue in the human body. Age-related muscle atrophy (sarcopenia) and weakness, characterized by progressive loss of lean muscle mass and function, is a major contributor to morbidity and has a profound effect on the quality of life of older people. With a continuously growing older population (estimated 2 billion of people aged >60 by 2050), demand for medical and social care due to functional deficits, associated with neuromuscular ageing, will inevitably increase...
July 26, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28739222/biomarkers-of-cancer-cachexia
#13
REVIEW
Audrey Loumaye, Jean-Paul Thissen
Cachexia is a complex multifactorial syndrome, characterized by loss of skeletal muscle and fat mass, which affects the majority of advanced cancer patients and is associated with poor prognosis. Interestingly, reversing muscle loss in animal models of cancer cachexia leads to prolong survival. Therefore, detecting cachexia and maintaining muscle mass represent a major goal in the care of cancer patients. However, early diagnosis of cancer cachexia is currently limited for several reasons. Indeed, cachexia development is variable according to tumor and host characteristics...
July 21, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28739045/filamin-b-the-next-hotspot-in-skeletal-research
#14
REVIEW
Qiming Xu, Nan Wu, Lijia Cui, Zhihong Wu, Guixing Qiu
Filamin B (FLNB) is a large dimeric actin-binding protein which crosslinks actin cytoskeleton filaments into a dynamic structure. Up to present, pathogenic mutations in FLNB are solely found to cause skeletal deformities, indicating the important role of FLNB in skeletal development. FLNB-related disorders are classified as spondylocarpotarsal synostosis (SCT), Larsen syndrome (LS), atelosteogenesis (AO), boomerang dysplasia (BD), and isolated congenital talipes equinovarus, presenting with scoliosis, short-limbed dwarfism, clubfoot, joint dislocation and other unique skeletal abnormalities...
July 20, 2017: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28738022/werner-syndrome-a-model-for-sarcopenia-due-to-accelerated-aging
#15
Masaya Yamaga, Minoru Takemoto, Mayumi Shoji, Kenichi Sakamoto, Masashi Yamamoto, Takahiro Ishikawa, Masaya Koshizaka, Yoshiro Maezawa, Kazuki Kobayashi, Koutaro Yokote
Werner syndrome (WS) is a rare inheritable progeroid syndrome caused by a mutation in the WRN gene. Although WS has been described as a characteristic appearance of very slender extremities with a stocky trunk, few studies have investigated the loss of muscle mass, fat mass distribution (body composition), and mobility according to age and sex. Therefore, the aim of this study was to precisely describe the body composition in WS. Nine Japanese patients with WS (four males and five females; mean age 48±8.8 years) were recruited...
July 19, 2017: Aging
https://www.readbyqxmd.com/read/28726981/triennial-growth-and-development-symposium-factors-influencing-bovine-intramuscular-adipose-tissue-development-and-cellularity
#16
E Albrecht, L Schering, Y Liu, K Komolka, C Kühn, K Wimmers, T Gotoh, S Maak
Appearance, distribution, and amount of intramuscular fat (IMF), often referred to as marbling, are highly variable and depend on environmental and genetic factors. On the molecular level, the concerted action of several drivers, including hormones, receptors, transcription factors, etc., determines where clusters of adipocytes arise. Therefore, the aim of future studies remains to identify such factors as biological markers of IMF to increase the ability to identify animals that deposit IMF early in age to increase efficiency of high-quality meat production...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28721834/the-interaction-between-nutrition-and-exercise-for-promoting-health-and-performance
#17
Oliver C Witard, Derek Ball
The theme of The Nutrition Society Spring Conference 2017 was on the interaction between nutrition and exercise for promoting healthy ageing, maintaining cognitive function and improving the metabolic health of the population. The importance of this theme is highlighted by the public health issues surrounding obesity, diabetes and the age-related loss of skeletal muscle mass (sarcopenia). The opening symposium provided a historical perspective of both invasive and non-invasive methodologies for measuring exercise energetics and energy balance...
July 19, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28721011/effect-of-picroside-ii-on-hind-limb-ischemia-reperfusion-injury-in-rats
#18
Yiğit Kılıç, Abdullah Özer, Tolga Tatar, Mustafa Hakan Zor, Mehmet Kirişçi, Hakan Kartal, Ali Doğan Dursun, Deniz Billur, Mustafa Arslan, Ayşegül Küçük
INTRODUCTION: Many structural and functional damages are observed in cells and tissues after reperfusion of previously viable ischemic tissues. Acute ischemia reperfusion (I/R) injury of lower extremities occurs especially when a temporary cross-clamp is applied to the abdominal aorta during aortic surgery. Research regarding the treatment of I/R injury has been increasing day-by-day. In this study, we aimed to investigate the effect of picroside II on skeletal muscle of rats experiencing simulated I/R...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28717411/skeletal-muscle-generated-from-induced-pluripotent-stem-cells-induction-and-application
#19
REVIEW
Yuko Miyagoe-Suzuki, Shin'ichi Takeda
Human induced pluripotent stem cells (hiPS cells or hiPSCs) can be derived from cells of patients with severe muscle disease. If skeletal muscle induced from patient-iPSCs shows disease-specific phenotypes, it can be useful for studying the disease pathogenesis and for drug development. On the other hand, human iPSCs from healthy donors or hereditary muscle disease-iPSCs whose genomes are edited to express normal protein are expected to be a cell source for cell therapy. Several protocols for the derivation of skeletal muscle from human iPSCs have been reported to allow the development of efficient treatments for devastating muscle diseases...
June 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28715470/impairment-of-cold-injury-induced-muscle-regeneration-in-mice-receiving-a-combination-of-bone-fracture-and-alendronate-treatment
#20
Shigeo Kawada, Atsushi Harada, Naohiro Hashimoto
Alendronate, a nitrogen-containing bisphosphonate, is well established as a treatment for osteoporosis through regulation of osteoclast activity. Previously, the pharmacological effects of bisphosphonates on cells outside the bone environment have been considered irrelevant because bisphosphonates target bone. Here we show that administration of alendronate impairs muscle regeneration in mice after bone fracture. A series of injections of alendronate alone or bone fracture alone did not affect muscle regeneration induced by cold injury...
2017: PloS One
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