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https://www.readbyqxmd.com/read/29785395/the-relationship-between-nafld-and-sarcopenia-in-elderly-patients
#1
Yu Zhai, Qian Xiao, Jing Miao
Aim: Previous studies have shown that individuals with low muscle mass exhibit an increased risk of nonalcoholic fatty liver disease (NAFLD). In this study, we investigated the association between NAFLD and sarcopenia in elderly patients. Methods: We classified the participants into sarcopenia/nonsarcopenia groups based on dual-energy X-ray absorptiometry (DXA), muscle strength (grip strength), or/and physical performance (6 m usual gait speed). We diagnosed NAFLD by ultrasonography combined with the history of alcohol intake...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29785242/role-of-oxidative-stress-as-key-regulator-of-muscle-wasting-during-cachexia
#2
REVIEW
Johanna Ábrigo, Alvaro A Elorza, Claudia A Riedel, Cristian Vilos, Felipe Simon, Daniel Cabrera, Lisbell Estrada, Claudio Cabello-Verrugio
Skeletal muscle atrophy is a pathological condition mainly characterized by a loss of muscular mass and the contractile capacity of the skeletal muscle as a consequence of muscular weakness and decreased force generation. Cachexia is defined as a pathological condition secondary to illness characterized by the progressive loss of muscle mass with or without loss of fat mass and with concomitant diminution of muscle strength. The molecular mechanisms involved in cachexia include oxidative stress, protein synthesis/degradation imbalance, autophagy deregulation, increased myonuclear apoptosis, and mitochondrial dysfunction...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29785098/sarcopenia-assessment-of-disease-burden-and-strategies-to-improve-outcomes
#3
REVIEW
Ilaria Liguori, Gennaro Russo, Luisa Aran, Giulia Bulli, Francesco Curcio, David Della-Morte, Gaetano Gargiulo, Gianluca Testa, Francesco Cacciatore, Domenico Bonaduce, Pasquale Abete
Life expectancy is increasing worldwide, with a resultant increase in the elderly population. Aging is characterized by the progressive loss of skeletal muscle mass and strength - a phenomenon called sarcopenia. Sarcopenia has a complex multifactorial pathogenesis, which involves not only age-related changes in neuromuscular function, muscle protein turnover, and hormone levels and sensitivity, but also a chronic pro-inflammatory state, oxidative stress, and behavioral factors - in particular, nutritional status and degree of physical activity...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29781118/ballistic-tongue-projection-in-a-miniaturized-salamander
#4
Stephen M Deban, Segall V Bloom
Miniaturization of body size is often accompanied by peculiarities in morphology that can have functional consequences. We examined the feeding behavior and morphology of the miniaturized plethodontid salamander Thorius, one of the smallest vertebrates, to determine if its performance and biomechanics differ from those of its larger relatives. High-speed imaging and dynamics analysis of feeding at a range of temperatures show that tongue projection in Thorius macdougalli is ballistic and achieves accelerations of up to 600 G with low thermal sensitivity, indicating that tongue projection is powered by an elastic-recoil mechanism...
May 20, 2018: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29780960/waldenstrom-macroglobulinemia-involving-the-superior-rectus-muscle
#5
J B Hellman, G J Harocopos, L K Lin
Purpose: We present the first reported case of Waldenstrom macroglobulinemia in the right superior rectus causing diplopia. Observations: A 72-year-old man with a 6-month history of untreated asymptomatic Waldenstrom macroglobulinemia presented with 2 years of diagonal binocular diplopia that was previously thought to be due to ocular myasthenia gravis. Examination showed mild right proptosis and right hypotropia, and MRI revealed a focal lesion of the right superior rectus muscle...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29779810/association-between-nutritional-blood-based-biomarkers-and-clinical-outcome-in-sarcopenia-patients
#6
Salah Gariballa, Awad Alessa
BACKGROUND: Although several micronutrients deficiency were reported to be associated with poor muscle function, however information on sarcopenia patients is still lacking. The aim of this report was to measure some micronutrients blood-based status in sarcopenia patients during both acute illness and recovery. DESIGN: We assessed nutritional status of randomly selected hospitalised patients using anthropometric, haematological and biochemical data at baseline, 6 weeks and at 6 months...
June 2018: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29779799/impact-of-low-skeletal-muscle-mass-on-non-lung-cancer-mortality-after-stereotactic-body-radiotherapy-for-patients-with-stage-i-non-small-cell-lung-cancer
#7
Yukinori Matsuo, Takamasa Mitsuyoshi, Takashi Shintani, Yusuke Iizuka, Takashi Mizowaki
PURPOSE: The purpose of the present study was to retrospectively evaluate impact of pre-treatment skeletal muscle mass (SMM) on overall survival and non-lung cancer mortality after stereotactic body radiotherapy (SBRT) for patients with stage I non-small cell lung cancer (NSCLC). METHODS AND MATERIALS: One-hundred and eighty-six patients whose abdominal CT before the treatment was available were enrolled into this study. The patients were divided into two groups of SMM according to gender-specific thresholds for unilateral psoas area...
May 17, 2018: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29779002/developing-a-testing-battery-for-measuring-dogs-stifle-functionality-the-finnish-canine-stifle-index-fcsi
#8
Heli K Hyytiäinen, Sari H Mölsä, Jouni J T Junnila, Outi M Laitinen-Vapaavuori, Anna K Hielm-Björkman
This study aimed at developing a quantitative testing battery for dogs' stifle functionality, as, unlike in human medicine, currently none is available in the veterinary field. Forty-three dogs with surgically treated unilateral cranial cruciate ligament rupture and 21 dogs with no known musculoskeletal problems were included. Eight previously studied tests: compensation in sitting and lying positions, symmetry of thrust in hindlimbs when rising from lying and sitting, static weight bearing, stifle flexion and extension and muscle mass symmetry, were summed into the Finnish Canine Stifle Index (FCSI)...
May 19, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29777277/impact-of-muscle-atrophy-on-bone-metabolism-and-bone-strength-implications-for-muscle-bone-crosstalk-with-aging-and-disuse
#9
REVIEW
T Bettis, B-J Kim, M W Hamrick
Bone fractures in older adults are often preceded by a loss of muscle mass and strength. Likewise, bone loss with prolonged bed rest, spinal cord injury, or with exposure to microgravity is also preceded by a rapid loss of muscle mass. Recent studies using animal models in the setting of hindlimb unloading or botulinum toxin (Botox) injection also reveal that muscle loss can induce bone loss. Moreover, muscle-derived factors such as irisin and leptin can inhibit bone loss with unloading, and knockout of catabolic factors in muscle such as the ubiquitin ligase Murf1 or the myokine myostatin can reduce osteoclastogenesis...
May 18, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29777228/effects-of-clomiphene-citrate-on-male-obesity-associated-hypogonadism-a-randomized-double-blind-placebo-controlled-study
#10
Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29776338/assessment-of-lower-extremity-muscle-mass-muscle-strength-and-exercise-therapy-in-elderly-patients-with-diabetes-mellitus
#11
Takuo Nomura, Toshihiro Kawae, Hiroaki Kataoka, Yukio Ikeda
The increase in the proportion of elderly people in the population is one of the most remarkable sociodemographic phenomena of the twenty-first century. The number of patients with diabetes is also increasing worldwide with this demographic change. Given these facts, consideration of the problems the general elderly population is facing in the management of diabetes is essential. In this review article, we focus on sarcopenia, which is the decrease in lower extremity muscle mass and muscle strength accompanying aging, describe the relationship between sarcopenia and diabetes, and highlight the specific factors through which diabetes contributes to loss of muscle strength...
May 17, 2018: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29775754/effects-of-micrornas-on-skeletal-muscle-development
#12
REVIEW
J Wang, L Z Yang, J S Zhang, J X Gong, Y H Wang, C L Zhang, H Chen, X T Fang
MicroRNAs (miRNAs) are small (about 22 nucleotides) noncoding RNAs, which were highly conserved among mammals. They have ushered in a new era in molecular biology over twenty years. They can negatively regulate gene expression at the posttranscriptional level through the principle of complementary base pairing with the 3' untranslated region (UTR) of their target mRNAs and induce their degradation. They involve in tissue morphogenesis, cellular processes like apoptosis, and major signaling pathways. Previous studies have promoted our understanding that miRNAs play an important role in myogenesis and have a big impact on muscle mass, muscle fiber type and muscle diseases...
May 15, 2018: Gene
https://www.readbyqxmd.com/read/29774990/searching-for-a-mitochondrial-root-to-the-decline-in-muscle-function-with-ageing
#13
EDITORIAL
Marta Gonzalez-Freire, Fatemeh Adelnia, Ruin Moaddel, Luigi Ferrucci
Sarcopenia, the age-related loss of muscle mass and strength, is linked to a range of adverse outcomes, such as impaired physical performance, cognitive function, and mortality. Preventing sarcopenia may reduce the burden of functional decline with aging and its impact on physiological and economic well-being in older adults. Mitochondria in muscle cells lose their intrinsic efficiency and capacity to produce energy during aging, and it has been hypothesized that such a decline is the main driver of sarcopenia...
May 18, 2018: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29773704/effect-of-dietary-omega-3-fatty-acid-supplementation-on-frailty-related-phenotypes-in-older-adults-a-systematic-review-and-meta-analysis-protocol
#14
Joanne Stocks, Ana M Valdes
INTRODUCTION: The beneficial effect of dietary omega-3 supplementation in younger adults or older people with acute or chronic disease is established. Knowledge is now needed about the effect in medically stable older people. The objective of this study is to examine and assess the evidence for a role of dietary omega-3 polyunsaturated fatty acid (PUFA) supplementation in older adults on (1) muscle mass and muscle strength, (2) inflammatory biomarkers and (3) physical activity. METHODS AND ANALYSIS: A systematic review and data synthesis will be conducted of randomised controlled trials in older people not recruited for any given disease diagnosis...
May 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29772844/leucine-supplementation-does-not-attenuate-skeletal-muscle-loss-during-leg-immobilization-in-healthy-young-men
#15
Evelien M P Backx, Astrid M H Horstman, Gabriel N Marzuca-Nassr, Janneau van Kranenburg, Joey S Smeets, Cas J Fuchs, Anniek A W Janssen, Lisette C P G M de Groot, Tim Snijders, Lex B Verdijk, Luc J C van Loon
BACKGROUND: Short successive periods of physical inactivity occur throughout life and contribute considerably to the age-related loss of skeletal muscle mass. The maintenance of muscle mass during brief periods of disuse is required to prevent functional decline and maintain metabolic health. OBJECTIVE: To assess whether daily leucine supplementation during a short period of disuse can attenuate subsequent muscle loss in vivo in humans. METHODS: Thirty healthy (22 ± 1 y) young males were exposed to a 7-day unilateral knee immobilization intervention by means of a full leg cast with (LEU, n = 15) or without (CON, n = 15) daily leucine supplementation (2...
May 17, 2018: Nutrients
https://www.readbyqxmd.com/read/29771332/mechanisms-of-skeletal-muscle-wasting-in-a-mouse-model-for-myotonic-dystrophy-type-1
#16
Ginny R Morriss, Kimal Rajapakshe, Shixia Huang, Cristian Coarfa, Thomas A Cooper
Myotonic dystrophy type 1 (DM1) is a multisystemic disease resulting in severe muscle weakening and wasting. DM1 is caused by expansion of CTG repeats in the 3'-UTR of the DMPK gene. We have developed an inducible, skeletal muscle-specific mouse model of DM1 (CUG960) that expresses 960 CUG repeats in the context of human DMPK exons 11-15. CUG960 RNA-expressing mice induced at PN1, as well as adult-onset animals, show clear, measurable muscle wasting accompanied by severe histological defects including central myonuclei, reduced fiber cross sectional area, increased percentage of oxidative myofibers, and the presence of nuclear RNA foci that colocalize with Mbnl1 protein...
May 16, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29769029/muscle-mass-and-muscle-strength-are-associated-with-pre-and-post-hospitalization-falls-in-older-male-inpatients-a-longitudinal-cohort-study
#17
Jeanine M Van Ancum, Mirjam Pijnappels, Nini H Jonkman, Kira Scheerman, Sjors Verlaan, Carel G M Meskers, Andrea B Maier
BACKGROUND: Low muscle mass and strength are highly prevalent in inpatients. It is acknowledged that low muscle mass and strength are associated with falls in community-dwelling older adults, but it is unknown if these muscle measures are also associated with falls in a population of older inpatients. This study aimed to investigate the association between muscle measures and pre- and post-hospitalization falls in older inpatients. METHODS: An inception cohort of patients aged 70 years and older, admitted to an academic teaching hospital, was included in this study...
May 16, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29766660/the-deterioration-of-muscle-mass-and-radiodensity-is-prognostic-of-poor-survival-in-stage-i-iii-colorectal-cancer-a-population-based-cohort-study-c-scans
#18
Justin C Brown, Bette J Caan, Jeffrey A Meyerhardt, Erin Weltzien, Jingjie Xiao, Elizabeth M Cespedes Feliciano, Candyce H Kroenke, Adrienne Castillo, Marilyn L Kwan, Carla M Prado
BACKGROUND: Muscle abnormalities such as low muscle mass and low muscle radiodensity are well known risk factors for unfavourable cancer prognosis. However, little is known in regard to the degree and impact of longitudinal changes in muscle mass and radiodensity within the context of cancer. Here, we explore the relationship between muscle wasting and mortality in a large population-based study of patients with non-metastatic colorectal cancer (CRC). METHODS: A total of 1924 patients with stage I-III CRC who underwent surgical resection in the Kaiser Permanente Northern California Health System were included...
May 15, 2018: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29766325/anthropometric-outcomes-of-a-motivational-interviewing-school-based-randomized-trial-involving-adolescents-with-overweight
#19
Silvia Freira, Marina Serra Lemos, Helena Fonseca, Geoffrey Williams, Marta Ribeiro, Fernanda Pena, Maria do Céu Machado
Motivational interviewing (MI) is an effective method to promote weight loss that can be delivered by non-mental health providers. The aim of this study was to evaluate whether MI was superior to conventional counseling to improve the anthropometric outcomes of adolescents with obesity/overweight. It was a controlled cluster randomized trial with parallel design in a school setting. The study included two groups: Motivational Interviewing Group (MIG) and control group (Conventional Intervention Group, CIG)...
May 15, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29764991/a-dgk%C3%AE-foxo-ubiquitin-proteolytic-axis-controls-fiber-size-during-skeletal-muscle-remodeling
#20
Jae-Sung You, Matthew S Dooley, Chan-Ran Kim, Eui-Jun Kim, Wei Xu, Craig A Goodman, Troy A Hornberger
Skeletal muscle rapidly remodels in response to various stresses, and the resulting changes in muscle mass profoundly influence our health and quality of life. We identified a diacylglycerol kinase ζ (DGKζ)-mediated pathway that regulated muscle mass during remodeling. During mechanical overload, DGKζ abundance was increased and required for effective hypertrophy. DGKζ not only augmented anabolic responses but also suppressed ubiquitin-proteasome system (UPS)-dependent proteolysis. We found that DGKζ inhibited the transcription factor FoxO that promotes the induction of the UPS...
May 15, 2018: Science Signaling
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