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https://www.readbyqxmd.com/read/29332917/significance-of-sarcopenia-evaluation-in-acute-decompensated-heart-failure
#1
Keiichi Tsuchida, Yuki Fujihara, Jiro Hiroki, Takahiro Hakamata, Ryohei Sakai, Kota Nishida, Koji Sudo, Komei Tanaka, Yukio Hosaka, Kazuyoshi Takahashi, Hirotaka Oda
In patients with chronic heart failure (HF), the clinical importance of sarcopenia has been recognized in relation to disease severity, reduced exercise capacity, and adverse clinical outcome. Nevertheless, its impact on acute decompensated heart failure (ADHF) is still poorly understood. Dual-energy X-ray absorptiometry (DXA) is a technique for quantitatively analyzing muscle mass and the degree of sarcopenia. Fat-free mass index (FFMI) is a noninvasive and easily applicable marker of muscle mass.This was a prospective observational cohort study comprising 38 consecutive patients hospitalized for ADHF...
January 15, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29331536/chronic-inflammation-and-sarcopenia-a-regenerative-cell-therapy-perspective
#2
Jagadish K Chhetri, Philipe de Souto Barreto, Bertrand Fougère, Yves Rolland, Bruno Vellas, Matteo Cesari
Sarcopenia is characterized by reduced skeletal muscle mass and strength in older individuals. It is one of the leading cause of physical limitation in older adults, and associated with wide spectrum of adverse events including disability and mortality. The phenomenon of chronic-inflammation or inflamm-aging with aging is known to be a major contributor to myriad of geriatric conditions including sarcopenia. Recent advances in regenerative medicine, in particular cell therapy have opened up new possibilities to ameliorate broad range of inflammatory disorders...
January 10, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29327827/differences-in-100-m-sprint-performance-and-skeletal-muscle-mass-between-elite-male-and-female-sprinters
#3
Takashi Abe, Scott J Dankel, Samuel L Buckner, Matthew B Jessee, Kevin T Mattocks, J Grant Mouser, Zachary W Bell, Jeremy P Loenneke
BACKGROUND: The sex difference in 100-m sprint performance between the world's best athletes is approximately 10%. We hypothesized that skeletal muscle mass (SM) relative to body mass may be a major factor contributing to this difference. The aim of this study was to examine the sex difference in absolute and relative SM and sprint performance in male and female sprinters. METHODS: We analyzed the SM of male (n=37) and female (n=26) 100-m sprinters; the sample was divided into two subgroups within each sex according to personal best 100-m time: 10...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29327178/clinical-impact-and-risk-factors-for-skeletal-muscle-loss-after-complete-resection-of-early-non-small-cell-lung-cancer
#4
Shinkichi Takamori, Gouji Toyokawa, Tatsuro Okamoto, Mototsugu Shimokawa, Fumihiko Kinoshita, Yuka Kozuma, Taichi Matsubara, Naoki Haratake, Takaki Akamine, Kazuki Takada, Masakazu Katsura, Fumihiko Hirai, Fumihiro Shoji, Tetsuzo Tagawa, Yoshinao Oda, Hiroshi Honda, Yoshihiko Maehara
BACKGROUND: A relationship between sarcopenia diagnosed by skeletal muscle area (SMA) and poor prognosis in cancer patients has recently been reported. This study aimed to clarify the clinical significance of postoperatively decreased SMA in patients with early non-small cell lung cancer (NSCLC). METHODS: This study selected 101 patients with pathologic stage 1 NSCLC who had undergone pre- and postoperative (~ 1 year) computed tomography scans and lobectomy between 2005 and 2010 at Kyushu University Hospital...
January 11, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29326089/associations-between-markers-of-oxidative-stress-skeletal-muscle-mass-and-function-and-to-the-influence-of-resistance-exercise-training-in-older-adults
#5
Ciriaco Carru, Mariasole Da Boit, Panagiotis Paliogiannis, Angelo Zinellu, Salvatore Sotgia, Rachael Sibson, Judith R Meakin, Richard M Aspden, Arduino A Mangoni, Stuart R Gray
BACKGROUND: Oxidative stress (OS) negatively affects skeletal muscle homeostasis in experimental models of ageing. However, little is known about the associations between circulating OS markers and parameters of muscle mass and function, and their responses to exercise training, in humans. METHODS: Maximal voluntary contraction (MVC, primary outcome) and isokinetic torque of the knee extensors at 30° s-1 (MIT), muscle cross-sectional area (MCSA) and quality (MQ, secondary outcomes), and plasma concentrations of malondialdehyde (MDA, pro-OS), homocysteine (HCY, pro-OS), taurine (TAU, anti-OS), and protein sulphydryl groups (PSH, anti-OS) were measured in 27 healthy older males and 23 females at baseline and after an 18-week resistance exercise program, with or without a nutritional intervention (fish oil vs...
January 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29325930/integrated-study-on-comparative-transcriptome-and-skeletal-muscle-function-in-aged-rats
#6
Jing Zhou, Zhiyin Liao, Jinliang Chen, Kexiang Zhao, Qian Xiao
The present study aimed to reveal aging-related changes in the skeletal muscle of SD rats by comparing transcriptome analysis, integrated with muscle physiological parameters. Ten rats aged 25 months were set as the old group (OG) and ten rats aged 6 months were set as the young group (YG). After 6 weeks of feeding, the body mass, grip strength, and gastrocnemius muscle mass were determined, and the differentially expressed genes were analyzed by transcriptome sequencing, followed by GO enrichment analysis and KEGG analysis...
January 8, 2018: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29322779/mining-the-secretome-of-c2c12-muscle-cells-data-dependent-experimental-approach-to-analyze-protein-secretion-using-label-free-quantification-and-peptide-based-analysis
#7
Leonie Grube, Rafael Dellen, Fabian Kruse, Holger Schwender, Kai Stuehler, Gereon Poschmann
Secretome analysis faces several challenges, including detection of low abundant proteins and the discrimination of bona fide secreted proteins from false-positive identifications stemming from cell leakage or serum. Here, we developed a two-step secretomics approach and applied it to the analysis of secreted proteins of C2C12 skeletal muscle cells since the skeletal muscle has been identified as an important endocrine organ secreting myokines as signaling molecules. First, we compared culture supernatants with corresponding cell lysates by mass spectrometry-based proteomics and label-free quantification...
January 11, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29319436/plasma-fatty-acids-as-markers-for-desaturase-and-elongase-activities-in-spinal-cord-injured-males
#8
Lynnette M Jones, Michael Legge
OBJECTIVE: To investigate the use of surrogate plasma fatty acid analysis to provide further insights into the underlying adiposity and the development of metabolic syndrome in men with spinal cord injury (SCI). DESIGN: Case-control, cross-sectional study. SETTING: Community-based individuals with spinal cord injury and healthy controls. PARTICIPANTS: Twenty men with SCI age, height and weight matched with 20 able-bodied controls...
January 10, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29318794/osteosarcopenia-in-patients-with-hip-fracture-is-related-with-high-mortality
#9
Jun Il Yoo, Hyunho Kim, Yong Chan Ha, Hyuck Bin Kwon, Kyung Hoi Koo
BACKGROUND: This study evaluated the prevalence of osteosarcopenia, as well as the relationship between one-year mortality and osteosarcopenia, as defined by criteria of the Asian Working Group on Sarcopenia in patients age 60 or older with hip fracture. METHODS: A total of 324 patients age 60 years or older with hip fracture were enrolled in this retrospective observational study. The main outcome measure was the prevalence of osteosarcopenia, as well as the relationship between osteosarcopenia and 1-year mortality...
January 22, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29318756/loss-of-skeletal-muscle-during-systemic-chemotherapy-is-prognostic-of-poor-survival-in-patients-with-foregut-cancer
#10
Louise E Daly, Éadaoin B Ní Bhuachalla, Derek G Power, Samantha J Cushen, Karl James, Aoife M Ryan
BACKGROUND: Malnutrition, weight loss, and muscle wasting are common in patients with foregut cancers (oesophagus, stomach, pancreas, liver, and bile ducts) and are associated with adverse clinical outcomes. However, little is known about the changes in body composition that occur in these patients during chemotherapy and its impacts clinical outcomes. PATIENTS AND METHODS: A prospective study of adult foregut cancer patients undergoing chemotherapy between 2012 and 2016 was conducted...
January 9, 2018: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29318723/endothelium-specific-cyp2j2-overexpression-attenuates-age-related-insulin-resistance
#11
Yan Yang, Ruolan Dong, Zhihui Chen, Danli Hu, Menglu Fu, Ying Tang, Dao Wen Wang, Xizhen Xu, Ling Tu
Ample evidences demonstrate that cytochrome P450 epoxygenase-derived epoxyeicosatrienoic acids (EETs) exert diverse biological activities, which include potent vasodilatory, anti-inflammatory, and cardiovascular protective effects. In this study, we investigated the effects of endothelium-specific CYP2J2 overexpression on age-related insulin resistance and metabolic dysfunction. Endothelium-specific targeting of the human CYP epoxygenase, CYP2J2, transgenic mice (Tie2-CYP2J2-Tr mice) was utilized. The effects of endothelium-specific CYP2J2 overexpression on aging-associated obesity, inflammation, and peripheral insulin resistance were evaluated by assessing metabolic parameters in young (3 months old) and aged (16 months old) adult male Tie2-CYP2J2-Tr mice...
January 10, 2018: Aging Cell
https://www.readbyqxmd.com/read/29315579/muscle-molecular-adaptations-to-endurance-exercise-training-are-conditioned-by-glycogen-availability-a-proteomics-based-analysis-in-the-mcardle-mouse-model
#12
Carmen Fiuza-Luces, Alejandro Santos-Lozano, Francisco Llavero, Rocío Campo, Gisela Nogales-Gadea, Jorge Díez Bermejo, Carlos Balandrón, África González-Murillo, Joaquín Arenas, Miguel A Martín, Antoni L Andreu, Tomàs Pinós, Beatriz G Gálvez, Juan A López, Jesús Vázquez, José L Zugaza, Alejandro Lucia
McArdle disease is an inborn disorder of skeletal muscle glycogen metabolism that results in blockade of glycogen breakdown due to mutations in the myophosphorylase gene. We recently developed a mouse model carrying the homozygous p.R50X common human mutation (McArdle mouse), facilitating the study of how glycogen availability affects muscle molecular adaptations to endurance exercise training. Using quantitative differential analysis by liquid chromatography with tandem-mass spectrometry, we analysed the quadriceps muscle proteome of 16-week-old McArdle (n = 5) and wild-type (WT) (n = 4) mice previously subjected to 8-week moderate-intensity treadmill training or to an equivalent control (no training) period...
January 7, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29314721/peritoneal-protein-losses-depend-on-more-than-just-peritoneal-dialysis-modality-and-peritoneal-membrane-transporter-status
#13
Suree Yoowannakul, Lauren S Harris, Andrew Davenport
Peritoneal protein clearance (PPCl) depends upon vascular supply and size selective permeability. Some previous reports suggested PPCl can distinguish fast peritoneal membrane transport due to local or systemic inflammation. However, as studies have been discordant, we wished to determine factors associated with an increased PPCl. Consecutive patients starting peritoneal dialysis (PD) who were peritonitis-free were studied. Data included a baseline peritoneal equilibration test (PET), measurement of dialysis adequacy, 24-h dialysate PPCl and body composition measured by multifrequency bioimpedance...
January 4, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29311302/fenofibrate-prevents-skeletal-muscle-loss-in-mice-with-lung-cancer
#14
Marcus D Goncalves, Seo-Kyoung Hwang, Chantal Pauli, Charles J Murphy, Zhe Cheng, Benjamin D Hopkins, David Wu, Ryan M Loughran, Brooke M Emerling, Guoan Zhang, Douglas T Fearon, Lewis C Cantley
The cancer anorexia cachexia syndrome is a systemic metabolic disorder characterized by the catabolism of stored nutrients in skeletal muscle and adipose tissue that is particularly prevalent in nonsmall cell lung cancer (NSCLC). Loss of skeletal muscle results in functional impairments and increased mortality. The aim of the present study was to characterize the changes in systemic metabolism in a genetically engineered mouse model of NSCLC. We show that a portion of these animals develop loss of skeletal muscle, loss of adipose tissue, and increased inflammatory markers mirroring the human cachexia syndrome...
January 8, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29310392/cavernous-hemangiomas-of-the-temporalis-muscle-with-prominent-formation-of-phleboliths-case-report-and-review-of-the-literature
#15
Bin Cui, Dan-Hui Wang, Guan-Jun Wang, Peng Cheng, Feng Zhang, Xiao-Bing Duan, Zhong-Fu Zhao
RATIONALE: Hemangiomas are benign tumors characterized by an abnormal proliferation of blood vessels, most often occur in the skin and subcutaneous tissue, intramuscular hemangioma, a distinctive type of hemangioma within the skeletal muscle, account for <1% of all hemangiomas, temporalis muscle is a very uncommon site, cavernous hemangioma of the temporalis muscle with prominent formation of phleboliths is rare reported. PATIENT CONCERNS: A 62-year-old man presented with a slowly increased mass in his right temporal fossa...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29310350/relationship-between-skeletal-muscle-mass-and-liver-fibrosis-markers-for-patients-with-hepatitis-c-virus-related-liver-disease
#16
Ryo Takata, Hiroki Nishikawa, Hirayuki Enomoto, Yoshinori Iwata, Akio Ishii, Yuho Miyamoto, Noriko Ishii, Yukihisa Yuri, Kunihiro Hasegawa, Chikage Nakano, Takashi Nishimura, Kazunori Yoh, Nobuhiro Aizawa, Yoshiyuki Sakai, Naoto Ikeda, Tomoyuki Takashima, Hiroko Iijima, Shuhei Nishiguchi
We aimed to elucidate the relationship between serum liver fibrosis markers (Mac-2 binding protein glycosylation isomer (M2BPGi), FIB-4 index, aspartate aminotransferase to platelet ratio index and hyaluronic acid), and skeletal muscle mass and to investigate factors linked to skeletal muscle mass loss (SMML) in patients with chronic hepatitis C (CHC, n = 277, median age = 64 years). We defined patients with psoas muscle index [PMI, sum of bilateral psoas muscle mass calculated by manual trace method at the lumber 3 level on the computed tomography images divided by height squared (cm/m)] less than 6...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29304751/what-is-the-best-adjustment-of-appendicular-lean-mass-for-predicting-mortality-or-disability-among-japanese-community-dwellers
#17
Rei Otsuka, Yasumoto Matsui, Chikako Tange, Yukiko Nishita, Makiko Tomida, Fujiko Ando, Hiroshi Shimokata, Hidenori Arai
BACKGROUND: Age-related declines in skeletal muscle mass and strength, representing "sarcopenia," are a growing concern in aging societies. However, the prevalence of low muscle mass based on the height2-adjustment has been shown to be extremely low, and a more appropriate definition of low muscle mass is needed, particularly for Asian women. The aim of this study was to explore the most appropriate adjustment of appendicular lean mass (ALM) for predicting mortality or disability risk using ALM or any of 5 adjustments of ALM among community-dwelling Japanese...
January 5, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29304744/a-randomised-controlled-intervention-study-investigating-the-efficacy-of-carotenoid-rich-fruits-and-vegetables-and-extra-virgin-olive-oil-on-attenuating-sarcopenic-symptomology-in-overweight-and-obese-older-adults-during-energy-intake-restriction-protocol-paper
#18
Anthony Villani, Hattie Wright, Gary Slater, Jonathan Buckley
BACKGROUND: Weight loss interventions have not been advocated for overweight/obese older adults due to potential loss of skeletal muscle and strength impacting on physical function with potential loss of independence. Carotenoids and polyphenols are inversely associated with sarcopenic symptomology. This paper reports the protocol of a study evaluating the efficacy of a high-protein, energy restricted diet rich in carotenoids and polyphenols on body composition, muscle strength, physical performance and quality of life in overweight and obese older adults...
January 5, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29302020/muscle-function-decline-and-mitochondria-changes-in-middle-age-precede-sarcopenia-in-mice
#19
Andrea Del Campo, Ignacio Contreras-Hernández, Mauricio Castro-Sepúlveda, Cristian A Campos, Reinaldo Figueroa, María Florencia Tevy, Verónica Eisner, Mariana Casas, Enrique Jaimovich
Sarcopenia is the degenerative loss of muscle mass and strength with aging. Although a role of mitochondrial metabolism in muscle function and in the development of many diseases has been described, the role of mitochondrial topology and dynamics in the process of muscle aging is not fully understood. This work shows a time line of changes in both mitochondrial distribution and skeletal muscle function during mice lifespan. We isolated muscle fibers from flexor digitorum brevis of mice of different ages. A fusion-like phenotype of mitochondria, together with a change in orientation perpendicular to the fiber axis was evident in the Adult group compared to Juvenile and Older groups...
January 4, 2018: Aging
https://www.readbyqxmd.com/read/29301558/leucine-and-ace-inhibitors-as-therapies-for-sarcopenia-lace-trial-study-protocol-for-a-randomised-controlled-trial
#20
Margaret M Band, Deepa Sumukadas, Allan D Struthers, Alison Avenell, Peter T Donnan, Paul R Kemp, Karen T Smith, Cheryl L Hume, Adrian Hapca, Miles D Witham
BACKGROUND: Sarcopenia (the age-related loss of muscle mass and function) is a major contributor to loss of mobility, falls, loss of independence, morbidity and mortality in older people. Although resistance training is effective in preventing and reversing sarcopenia, many older people are sedentary and either cannot or do not want to exercise. This trial examines the efficacy of supplementation with the amino acid leucine and/or angiotensin converting enzyme inhibition to potentially improve muscle mass and function in people with sarcopenia...
January 4, 2018: Trials
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