keyword
MENU ▼
Read by QxMD icon Read
search

Disuse

keyword
https://www.readbyqxmd.com/read/29792552/immobilization-rapidly-induces-thioredoxin-interacting-protein-txnip-gene-expression-together-with-insulin-resistance-in-rat-skeletal-muscle
#1
Emi Kawamoto, Keigo Tamakoshi, Song-Gyu Ra, Hiroyuki Masuda, Kentaro Kawanaka
Acute short-duration of disuse induces the development of insulin resistance for glucose uptake in rodent skeletal muscle. Since thioredoxin-interacting protein (TXNIP) has been implicated in the downregulation of insulin signaling and glucose uptake, we examined the possibility that muscle disuse rapidly induces insulin resistance via increased TXNIP mRNA and protein expression. Male Wistar rats were subjected to unilateral 6-hr hindlimb immobilization by plaster cast. At the end of this period, the soleus muscles from both immobilized and contralateral non-immobilized hindlimbs were excised and examined...
May 24, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29791244/the-need-for-mapping-personal-goals-to-exercise-dosage-in-community-based-exercise-programs-for-people-with-parkinson-s-disease
#2
Allison L Amateis, Chelsea L Boesel, Bryan P Ehnert, Abby S Evans, Katheryn E Hurst, Katie L Marek, Amanda C Sullivan, Kathryn R Zalewski, Wendy E Huddleston
PURPOSE: Community-based exercise can support long-term management of Parkinson's disease, although it is not known if personal goals are met in these programs. The objectives of this study were to: (1) examine the goals of community based exercise programs from the participant and instructor perspectives; (2) establish the extent to which these programs meet self-described exercise outcomes; and (3) explore participant and instructor perspectives on barriers to meeting exercise expectations...
May 23, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29782441/how-do-hearing-aid-owners-respond-to-hearing-aid-problems
#3
Rebecca J Bennett, Ariane Laplante-Lévesque, Robert H Eikelboom
BACKGROUND: Although hearing aids can improve hearing and communication, problems that arise following the acquisition of hearing aids can result in their disuse. This study aimed to gather perspectives of hearing aid owners and hearing health care clinicians about how hearing aid owners respond to problems that arise following hearing aid fitting, and then use these perspectives to generate a conceptual framework to better understand these responses. METHODS: Seventeen hearing aid owners and 21 hearing health care clinicians generated, sorted, and rated statements regarding how hearing aid owners respond to problems associated with hearing aid use...
May 18, 2018: Ear and Hearing
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
#4
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/29772844/leucine-supplementation-does-not-attenuate-skeletal-muscle-loss-during-leg-immobilization-in-healthy-young-men
#5
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/29761850/unexpected-regulation-pattern-of-the-ikk%C3%AE-nf-%C3%AE%C2%BAb-murf1-pathway-with-remarkable-muscle-plasticity-in-the-daurian-ground-squirrel-spermophilus-dauricus
#6
Yanhong Wei, Lingchen Gong, Weiwei Fu, Shenhui Xu, Zhe Wang, Jie Zhang, Er Ning, Hui Chang, Huiping Wang, Yunfang Gao
As a typical hibernator, the Daurian ground squirrel (Spermophilus dauricus) spends considerable time in a state of reduced activity with prolonged fasting. Despite this, they experience little muscle atrophy and have thus become an interesting anti-disuse muscle atrophy model. The IKKβ/NF-κB signaling pathway is significant to muscle atrophy due to the protein degradation resulting from the upregulation of the E3 ubiquitin ligase MuRF1. The current study showed that the IKKβ/NF-κB signaling pathway and MuRF1 maintained relatively steady mRNA and protein expression levels, with little muscle atrophy observed in the soleus (slow-twitch, SOL) or extensor digitorum longus (fast-twitch, EDL) during hibernation (HIB); however, mRNA expression significantly increased in the SOL and EDL muscle during interbout arousal (IBA), as did the MuRF1 mRNA level in the SOL and MuRF1 protein level in the EDL...
May 15, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29753246/current-research-trends-on-plastic-pollution-and-ecological-impacts-on-the-soil-ecosystem-a-review
#7
REVIEW
Yooeun Chae, Youn-Joo An
Plastic pollution in the environment is currently receiving worldwide attention. Improper dumping of disused or abandoned plastic wastes leads to contamination of the environment. In particular, the disposal of municipal wastewater effluent, sewage sludge landfill, and plastic mulch from agricultural activities is a serious issue and of major concern regarding soil pollution. Compared to plastic pollution in the marine and freshwater ecosystems, that in the soil ecosystem has been relatively neglected. In this study, we discussed plastic pollution in the soil environment and investigated research on the effects of plastic wastes, especially microplastics, on the soil ecosystem...
May 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29752219/immediate-weightbearing-after-first-metatarsophalangeal-joint-arthrodesis-with-screw-and-locking-plate-fixation-a-short-term-review
#8
Kyle W Abben, Matthew D Sorensen, Brett J Waverly
Historically, the postoperative protocol for patients undergoing first metatarsophalangeal joint arthrodesis has included 6 weeks of non-weightbearing, followed by protected weightbearing in a below-the-knee cast boot or postoperative shoe. This prolonged period of non-weightbearing predisposes the patient to disuse atrophy, osteopenia, deep vein thrombosis risk, and, overall, a prolonged time to recovery. The present study reports a retrospective review of a patient cohort that underwent first metatarsophalangeal joint fusion with immediate full weightbearing postoperatively...
May 8, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29734622/there-is-gold-in-them-hills-predicting-potential-acid-mine-drainage-events-through-the-use-of-chemometrics
#9
Daniel Cozzolino, Shaneel Chandra, Jessica Roberts, Aoife Power, Piumie Rajapaksha, Nicole Ball, Russell Gordon, James Chapman
Disused mines and mining legacy require significant manpower to ameliorate the contaminated environmental surroundings following their disbanding coupled with extraordinary funding to manage these issues. Water (pH, temperature, dissolved oxygen, conductance, metals, sulphate) and total suspended solids (TSS) quality are environmental parameters that are affected by legacy mining activity and often require monitoring and rapid response if events (e.g. rainfall) occur which might affect the surrounding areas...
April 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29726007/alterations-in-the-muscle-force-transfer-apparatus-in-aged-rats-during-unloading-and-reloading-impact-of-microrna-31
#10
David C Hughes, George R Marcotte, Leslie M Baehr, Daniel W D West, Andrea G Marshall, Scott M Ebert, Arik Davidyan, Christopher M Adams, Sue C Bodine, Keith Baar
KEY POINTS: Force transfer is integral for maintaining skeletal muscle structure and function. One important component is dystrophin. There is limited understanding of how force transfer is impacted by age and loading. Here, we investigate the force transfer apparatus in muscles of adult and old rats exposed to periods of disuse and reloading. Our results demonstrate an increase in dystrophin protein during the reloading phase in the adult TA muscle that is delayed in old. The consequence of this delay is an increased susceptibility towards contraction-induced muscle injury...
May 3, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29719042/early-endplate-remodeling-and-skeletal-muscle-signaling-events-following-rat-hindlimb-suspension
#11
Alexander V Chibalin, Boubacar Benziane, Guzalija F Zakyrjanova, Violetta V Kravtsova, Igor I Krivoi
Motor endplates naturally undergo continual morphological changes that are altered in response to changes in neuromuscular activity. This study examines the consequences of acute (6-12 hr) disuse following hindlimb suspension on rat soleus muscle endplate structural stability. We identify early changes in several key signaling events including markers of protein kinase activation, AMPK phosphorylation and autophagy markers which may play a role in endplate remodeling. Acute disuse does not change endplate fragmentation, however, it decreases both the individual fragments and the total endplate area...
May 2, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29656554/a-single-day-of-bed-rest-irrespective-of-energy-balance-does-not-affect-skeletal-muscle-gene-expression-or-insulin-sensitivity
#12
Marlou L Dirks, Francis B Stephens, Sarah R Jackman, Jesús Galera Gordo, David Machin, Richard M Pulsford, Luc Jc van Loon, Benjamin T Wall
NEW FINDINGS: What is the central question of this study? What are the initial metabolic and molecular events that underpin bed rest-induced skeletal muscle deconditioning, and what is the contribution of energy balance? What is the main finding and its importance? A single day of bed rest, irrespective of energy balance, did not lead to overt changes in skeletal muscle gene expression or insulin sensitivity. More than one day of physical inactivity is required to observe the insulin resistance and robust skeletal muscle transcriptional responses associated with bed rest and consequent alterations in energy balance...
April 15, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29648892/assessment-of-the-readiness-for-interprofessional-learning-scale-ripls-an-item-response-theory-analysis
#13
Matthew James Kerry, Rongmei Wang, Jinbing Bai
This short report aims to bring evidence from modern psychometric methods to bear on a popularly deployed questionnaire in interprofessional education (IPE) assessment. Specifically, three interrelated problems raised against the Readiness for Interprofessional Learning Scale (RIPLS) are examined in a study with 280 medical and nursing student participants. Firstly, findings support RIPLS overall reliability, but fail to support subscale reliabilities. Secondly, findings indicate a strong, general factor underlying the RIPLS that supports unidimensional interpretations...
April 12, 2018: Journal of Interprofessional Care
https://www.readbyqxmd.com/read/29616222/does-a-better-perfusion-of-deconditioned-muscle-tissue-release-chronic-low-back-pain
#14
Paola Valdivieso, Martino V Franchi, Christian Gerber, Martin Flück
Non-specific chronic low back pain (nsCLBP) is a multifactorial condition of unknown etiology and pathogenesis. Physical and genetic factors may influence the predisposition of individuals to CLBP, which in many instances share a musculoskeletal origin. A reduced pain level in low back pain patients that participate in exercise therapy highlights that disuse-related muscle deconditioning may predispose individuals to nsCLBP. In this context, musculoskeletal pain may be the consequence of capillary rarefaction in inactive muscle as this would lower local tissue drainage and washing out of toxic waste...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29615929/muscle-atrophy-induced-by-mechanical-unloading-mechanisms-and-potential-countermeasures
#15
REVIEW
Yunfang Gao, Yasir Arfat, Huiping Wang, Nandu Goswami
Prolonged periods of skeletal muscle inactivity or mechanical unloading (bed rest, hindlimb unloading, immobilization, spaceflight and reduced step) can result in a significant loss of musculoskeletal mass, size and strength which ultimately lead to muscle atrophy. With advancement in understanding of the molecular and cellular mechanisms involved in disuse skeletal muscle atrophy, several different signaling pathways have been studied to understand their regulatory role in this process. However, substantial gaps exist in our understanding of the regulatory mechanisms involved, as well as their functional significance...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29605113/disuse-osteopenia-following-leg-fracture-in-postmenopausal-women-implications-for-hip-fracture-risk-and-fracture-liaison-services
#16
S J Hopkins, A D Toms, M Brown, A Appleboam, K M Knapp
INTRODUCTION: Disuse osteopenia is a known consequence of reduced weight-bearing and has been demonstrated at the hip following leg injury but has not been specifically studied in postmenopausal women. METHOD: Bilateral DXA (GE Lunar Prodigy) bone mineral density (BMD) measurements were taken at the neck of femur (NOF), total hip region (TH) and lumbar spine in postmenopausal female groups comprising controls (N = 43), new leg fractures (#<3wks) (N = 9), and participants who had sustained a leg fracture more than one year previously (#>1yr) (N = 24)...
May 2018: Radiography
https://www.readbyqxmd.com/read/29593571/mechanistic-role-of-reactive-oxygen-species-and-therapeutic-potential-of-antioxidants-in-denervation-or-fasting-induced-skeletal-muscle-atrophy
#17
Jiaying Qiu, Qingqing Fang, Tongtong Xu, Changyue Wu, Lai Xu, Lingbin Wang, Xiaoming Yang, Shu Yu, Qi Zhang, Fei Ding, Hualin Sun
Skeletal muscle atrophy occurs under various conditions, such as disuse, denervation, fasting, aging, and various diseases. Although the underlying molecular mechanisms are still not fully understood, skeletal muscle atrophy is closely associated with reactive oxygen species (ROS) overproduction. In this study, we aimed to investigate the involvement of ROS in skeletal muscle atrophy from the perspective of gene regulation, and further examine therapeutic effects of antioxidants on skeletal muscle atrophy. Microarray data showed that the gene expression of many positive regulators for ROS production were up-regulated and the gene expression of many negative regulators for ROS production were down-regulated in mouse soleus muscle atrophied by denervation (sciatic nerve injury)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29581973/computational-investigation-on-the-biomechanical-responses-of-the-osteocytes-to-the-compressive-stimulus-a-poroelastic-model
#18
Liping Wang, Jianghui Dong, Cory J Xian
Osteocytes, the major type of bone cells embedded in the bone matrix and surrounded by the lacunar and canalicular system, can serve as biomechanosensors and biomechanotranducers of the bone. Theoretical analytical methods have been employed to investigate the biomechanical responses of osteocytes in vivo; the poroelastic properties have not been taken into consideration in the three-dimensional (3D) finite element model. In this study, a 3D poroelastic idealized finite element model was developed and was used to predict biomechanical behaviours (maximal principal strain, pore pressure, and fluid velocity) of the osteocyte-lacunar-canalicular system under 150-, 1000-, 3000-, and 5000-microstrain compressive loads, respectively, representing disuse, physiological, overuse, and pathological overload loading stimuli...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29567569/ipsilateral-stress-fracture-of-the-proximal-fibula-after-total-knee-arthroplasty-in-a-patient-with-severe-valgus-knee-deformity-on-a-background-of-rheumatoid-arthritis
#19
Hirokazu Takai, Sakumo Kii, Masatoshi Murayama, Nobutake Nakane, Tomoki Takahashi
INTRODUCTION: Previous studies have reported a lower extremity stress fracture after total knee arthroplasty (TKA). However, a fibular fracture after TKA is quite rare. We report a case of proximal fibula fracture after TKA in a patient with rheumatoid arthritis (RA). PRESENTATION OF CASE: A 45 year old woman with RA had severe knee and foot pain with an antalgic gait disturbance. There was a significant joint deformity in many of lower limb joints. Interval bilateral TKAs were performed two weeks apart...
March 2, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29567100/force-velocity-profiling-in-older-adults-an-adequate-tool-for-the-management-of-functional-trajectories-with-aging
#20
Julian Alcazar, Carlos Rodriguez-Lopez, I Ara, Ana Alfaro-Acha, Irene Rodríguez-Gómez, Roberto Navarro-Cruz, Jose Losa-Reyna, Francisco J García-García, Luis M Alegre
INTRODUCTION: The actual mechanisms leading to a reduced muscle power and functional ability in older adults are poorly understood. We investigated the association between different force-velocity (F-V) profiles and impaired muscle power, physical and cognitive function, frailty, and health-related quality of life (HRQoL) in older people. METHODS: Physical function (habitual gait speed, timed up-and-go test, sit-to-stand and stair-climbing ability), cognitive function, HRQoL and frailty were evaluated in 31 older subjects (70-85 years)...
March 19, 2018: Experimental Gerontology
keyword
keyword
31159
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"