2,270 results match your criteria muscles sampled

A case report and statewide surveillance of "weak meat" condition of Alaska weathervane scallops, Patinopecten caurinus, linked to a recently identified pathogenic parasite, Merocystis kathae (Apicomplexa: Aggregatidae).

J Invertebr Pathol 2021 Sep 20:107668. Epub 2021 Sep 20.

Alaska Department of Fish and Game, Commercial Fisheries Division, Twin Lakes Fish, Pathology Laboratory, 3333 Glacier Highway, Juneau, Alaska 99811 USA. Electronic address:

Weathervane scallop, Patinopecten caurinus, the largest scallop species in the world, is distributed from northern California, U.S.A. Read More

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September 2021

Kohonen Artificial Neural Network and Multivariate Analysis in the Identification of Proteome Changes during Early and Long Aging of Bovine Muscle Using SWATH Mass Spectrometry.

J Agric Food Chem 2021 Sep 15. Epub 2021 Sep 15.

Department of Biotechnology, University of Verona, Strada le Grazie 15, Verona 37134, Italy.

To study proteomic changes involved in tenderization of , Charolais heifers and bulls muscles were sampled after early and long aging (12 or 26 days). Sensory evaluation and instrumental tenderness measurement were performed. Proteins were analyzed by gel-free proteomics. Read More

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September 2021

Neuropathology of blepharospasm.

Exp Neurol 2021 Aug 28;346:113855. Epub 2021 Aug 28.

Departments of Neurology, Human Genetics and Pediatrics, Emory University, Atlanta, GA, United States of America. Electronic address:

Background: The dystonias are a group of disorders characterized by excessive muscle contractions leading to abnormal repetitive movements or postures. In blepharospasm, the face is affected, leading to excessive eye blinking and spasms of muscles around the eyes. The pathogenesis of blepharospasm is not well understood, but several imaging studies have implied subtle structural defects in several brain regions, including the cerebellum. Read More

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The effects of using a footrest during computer tasks varying in complexity and temporal demands: A postural and electromyographic analysis.

Appl Ergon 2021 Aug 24;98:103550. Epub 2021 Aug 24.

Integrated Systems Engineering The Ohio State University, USA.

Prior research has found that office workers may not be fully utilizing their chair's back support. This may be due in part to cognitive demands or other psychological stressors. Not using the back support may increase the muscle tension and contribute to muscle fatigue and discomfort. Read More

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Bioaccumulation and biomagnification in elasmobranchs: A concurrent assessment of trophic transfer of trace elements in 12 species from the Indian Ocean.

Mar Pollut Bull 2021 Aug 20;172:112853. Epub 2021 Aug 20.

Department of Science and High Technology, University of Insubria, Via Valleggio 11, Como, Italy. Electronic address:

We provided the first multi-species study investigating the presence and organotropism of trace elements in three tissues of 12 elasmobranch species. Shark species showed comparable TE loads, although milk sharks and juvenile scalloped hammerhead sharks exhibited the highest Cd and Hg levels, respectively. Fins accumulated higher levels of Pb, Co, and Cr; muscles higher V, As, and Hg; livers higher Se and Cd levels. Read More

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Tissue distribution and seasonal accumulation of carotenoids in Yesso scallop (Mizuhopecten yessoensis) with orange adductor muscle.

Food Chem 2022 Jan 27;367:130701. Epub 2021 Jul 27.

MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, Qingdao 266237, China. Electronic address:

Carotenoids are colored compounds with important physiological functions. The Haida golden scallop, which has an orange adductor muscle, is a carotenoid-enriched variety of scallop Mizuhopecten yessoensis, an important aquaculture shellfish. In this study, we investigated the tissue distribution of the carotenoids, pectenolone and pectenoxanthin, in both Haida golden scallop and normal Yesso scallop. Read More

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January 2022

Surgeon Positioning During Awake Laryngeal Surgery: An Ergonomic Analysis.

Laryngoscope 2021 Jul 23. Epub 2021 Jul 23.

Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A.

Objectives: While it is acknowledged that otolaryngologists performing microlaryngeal surgery can develop musculoskeletal symptoms due to suboptimal body positioning relative to the patient, flexible laryngoscopy and awake laryngeal surgeries (ALSs) can also pose ergonomic risk. This prospective study measured the effects of posture during ergonomically good and bad positions during laryngoscopy using ergonomic analysis, skin-surface electromyography (EMG), and self-reported pain ratings.

Study Design: Prospective cohort study. Read More

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The accuracy of needle electrode placement by trainees in selected forearm muscles using verification by neuromuscular ultrasound.

J Electromyogr Kinesiol 2021 Oct 10;60:102573. Epub 2021 Jul 10.

Regenerative Neurorehabilitation Laboratory, Shirley Ryan Ability Lab (Formerly the Rehabilitation Institute of Chicago), Chicago, IL, United States; Department of Physical Medicine and Rehabilitation, Northwestern University Feinberg School of Medicine, Chicago, IL, United States; Ken and Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States. Electronic address:

Introduction: Anatomic landmarks alone may not always be sufficient to accurately guide electromyography (EMG) electrode needle placement.

Methods: Senior residents and fellows (n = 11) targeted 4 forearm muscles with anatomic landmarks alone versus with audiovisual EMG feedback. Accuracy of EMG needle placement was verified using neuromuscular ultrasound imaging. Read More

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October 2021

The need for adaptable global guidance in health systems strengthening for musculoskeletal health: a qualitative study of international key informants.

Glob Health Res Policy 2021 05 28;6(1):24. Epub 2021 May 28.

Curtin School of Allied Health, Curtin University, Perth, Australia.

Background: Musculoskeletal (MSK) conditions, MSK pain and MSK injury/trauma are the largest contributors to the global burden of disability, yet global guidance to arrest the rising disability burden is lacking. We aimed to explore contemporary context, challenges and opportunities at a global level and relevant to health systems strengthening for MSK health, as identified by international key informants (KIs) to inform a global MSK health strategic response.

Methods: An in-depth qualitative study was undertaken with international KIs, purposively sampled across high-income and low and middle-income countries (LMICs). Read More

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Skeletal muscle thermogenesis enables aquatic life in the smallest marine mammal.

Science 2021 07;373(6551):223-225

Department of Health and Kinesiology, Texas A&M University, College Station, TX, USA.

Basal metabolic rate generally scales with body mass in mammals, and variation from predicted levels indicates adaptive metabolic remodeling. As a thermogenic adaptation for living in cool water, sea otters have a basal metabolic rate approximately three times that of the predicted rate; however, the tissue-level source of this hypermetabolism is unknown. Because skeletal muscle is a major determinant of whole-body metabolism, we characterized respiratory capacity and thermogenic leak in sea otter muscle. Read More

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Women's adoption of a web-based intervention for stress urinary incontinence: a qualitative study.

BMC Health Serv Res 2021 Jun 12;21(1):574. Epub 2021 Jun 12.

Department of Primary and Community Care, Radboud Institute for Health Sciences, Radboud University Medical Center, Geert Grooteplein 21, Postbox 9101, 6500, Nijmegen, HB, Netherlands.

Background: Stress urinary incontinence (SUI) is common among women and affects their quality of life. Pelvic floor muscle training is an effective conservative therapy, but only a minority of women seek help. E-health with pelvic floor muscle training is effective and increases access to care. Read More

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First report of Kudoa thunni and Kudoa musculoliquefaciens affecting the quality of commercially harvested yellowfin tuna and broadbill swordfish in Eastern Australia.

Parasitol Res 2021 Jul 11;120(7):2493-2503. Epub 2021 Jun 11.

School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia.

Recent anecdotal reports from seafood processors in eastern Australia have described an increased occurrence of post-mortem myoliquefaction ('jellymeat') in broadbill swordfish Xiphias gladius, and macroscopic cysts throughout the musculature of yellowfin tuna Thunnus albacares. A genus of parasitic cnidarians, Kudoa (Myxosporea, Multivalvulida), species of which are known to occur in economically important wild-caught fish species globally, can cause similar quality-deterioration issues. However, Kudoa sp. Read More

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A single oral glucose load decreases arterial plasma [K ] during exercise and recovery.

Physiol Rep 2021 Jun;9(11):e14889

Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia.

Aim: We investigated whether acute carbohydrate ingestion reduced arterial potassium concentration ([K ]) during and after intense exercise and delayed fatigue.

Methods: In a randomized, double-blind crossover design, eight males ingested 300 ml water containing 75 g glucose (CHO) or placebo (CON); rested for 60 min, then performed high-intensity intermittent cycling (HIIC) at 130% , comprising three 45-s exercise bouts (EB), then a fourth EB until fatigue. Radial arterial (a) and antecubital venous (v) blood was sampled at rest, before, during and after HIIC and analyzed for plasma ions and metabolites, with forearm arteriovenous differences (a-v diff) calculated to assess inactive forearm muscle effects. Read More

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Skeletal Muscle and Peripheral Nerve Histopathology in COVID-19.

Neurology 2021 08 7;97(8):e849-e858. Epub 2021 Jun 7.

From the Departments of Neurology (J.S., A.A.A.) and Pathology (R.F.P., G.S.P., I.H.S.), Brigham and Women's Hospital; Harvard Medical School (J.S., S.S.M., R.F.P., G.S.P., A.A.A., I.H.S.); and Department of Neurology (S.S.M., S.I.C.), Massachusetts General Hospital, Boston.

Objective: To explore the spectrum of skeletal muscle and nerve pathology of patients who died after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and to assess for direct viral invasion of these tissues.

Methods: Psoas muscle and femoral nerve sampled from 35 consecutive autopsies of patients who died after SARS-CoV-2 infection and 10 SARS-CoV-2-negative controls were examined under light microscopy. Clinical and laboratory data were obtained by chart review. Read More

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Flash dietary methionine supply over growth requirements in pigs: Multi-facetted effects on skeletal muscle metabolism.

Animal 2021 Jul 1;15(7):100268. Epub 2021 Jun 1.

PEGASE, INRAE, Institut Agro, 35590 Saint-Gilles, France.

Dietary methionine affects protein metabolism, lean gain and growth performance and acts in the control of oxidative stress. When supplied in large excess relative to growth requirements in diets for pigs, positive effects on pork quality traits have been recently reported. This study aimed to decipher the molecular and biochemical mechanisms affected by a dietary methionine supply above growth requirements in the loin muscle of finishing pigs. Read More

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Muscle stimulation in advanced idiopathic pulmonary fibrosis: a randomised placebo-controlled feasibility study.

BMJ Open 2021 06 2;11(6):e048808. Epub 2021 Jun 2.

Harefield Respiratory Research Group, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' Hospitals NHS Trust, London, UK.

Objectives: To assess the acceptability of neuromuscular electrical stimulation (NMES) of the quadriceps muscles in people with idiopathic pulmonary fibrosis (IPF) and to identify whether a future definitive trial is feasible.

Design: A randomised, parallel, two-group, participant and assessor-blinded, placebo-controlled feasibility trial with embedded qualitative interviews.

Setting: Outpatient department, Royal Brompton and Harefield Hospitals. Read More

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Effect of elbow joint angles on electromyographic activity versus force relationships of synergistic muscles of the triceps brachii.

PLoS One 2021 3;16(6):e0252644. Epub 2021 Jun 3.

Research Center of Health, Physical Fitness & Sports, Nagoya University, Nagoya, Aichi, Japan.

The electromyographic (EMG) activity and force relationship, i.e. EMG-force relationship, is a valuable indicator of the degree of the neuromuscular activation during isometric force production. Read More

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Into the Deep: New Data on the Lipid and Fatty Acid Profile of Redfish Inhabiting Different Depths in the Irminger Sea.

Biomolecules 2021 05 9;11(5). Epub 2021 May 9.

Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia.

New data on lipid and fatty acid profiles are presented, and the dynamics of the studied components in muscles in the males and females of the beaked redfish, , in the depth gradient of the Irminger Sea (North Atlantic) is discussed. The contents of the total lipids (TLs), total phospholipids (PLs), monoacylglycerols (MAGs), diacylglycerols (DAGs), triacylglycerols (TAGs), cholesterol (Chol), Chol esters, non-esterified fatty acids (NEFAs), and wax esters were determined by HPTLC; the phosphatidylserine (PS), phosphatidylethanolamine (PE), phosphatidylinositol (PI), phosphatidylcholine (PC), and lysophosphatidylcholine (LPC) were determined by HPLC; and fatty acids of total lipids were determined using GC. The Chol esters prevailed in muscles over the storage TAGs, and the wax ester content was high, which is a characteristic trait of vertically migrating species. Read More

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Temporal and spatial relationship between gluteal muscle Surface EMG activity and the vertical component of the ground reaction force during walking.

PLoS One 2021 26;16(5):e0251758. Epub 2021 May 26.

Experimental Rheumatology Unit, Department of Orthopedics, Jena University Hospital, Waldkliniken Eisenberg GmbH, Deutsches Zentrum für Orthopädie; Friedrich Schiller University Jena, Jena, Germany.

Background: Optimized temporal and spatial activation of the gluteal intermuscular functional unit is essential for steady gait and minimized joint loading.

Research Question: To analyze the temporal relationship between spatially resolved surface EMG (SEMG) of the gluteal region and the corresponding ground reaction force (GRF).

Methods: Healthy adults (29♀; 25♂; age 62. Read More

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Sarcocystis species in bovine carcasses from a Belgian abattoir: a cross-sectional study.

Parasit Vectors 2021 May 21;14(1):271. Epub 2021 May 21.

Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.

Background: Sarcocystis species are obligatorily heteroxenous parasites, of which some are zoonotic, representing a public health and economic impact. This study investigated the occurrence of Sarcocystis spp. in cattle sampled from a Belgian slaughterhouse. Read More

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Dismembered porcine limbs as a proxy for postmortem muscle protein degradation.

Int J Legal Med 2021 Jul 6;135(4):1627-1636. Epub 2021 May 6.

Department of Biosciences, University of Salzburg, Hellbrunner Str. 34, 5020, Salzburg, Austria.

The estimation of the postmortem interval (PMI) is of critical importance in forensic routine. The most frequently applied methods, however, are all restricted to specific time periods or must be excluded under certain circumstances. In the last years it has been shown that the analysis of muscle protein degradation has the potential to contribute to according delimitations in practice. Read More

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Suitability of specific soft tissue swabs for the forensic identification of highly decomposed bodies.

Int J Legal Med 2021 Jul 20;135(4):1319-1327. Epub 2021 Apr 20.

Department of Forensic Medicine and Forensic Neuropsychiatry, University of Salzburg, Salzburg, Austria.

When decomposition of a recovered body is fairly advanced, identification based on common morphologic features is often impossible. In these cases, short tandem repeat (STR) marker genotyping has established itself as a convenient and reliable alternative. However, at very progressed stages of decomposition, postmortem tissue putrefaction processes can decrease DNA yields considerably. Read More

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Migratory state and patterns of steroid hormone regulation in the pectoralis muscle of a nomadic migrant, the pine siskin (Spinus pinus).

Gen Comp Endocrinol 2021 Aug 14;309:113787. Epub 2021 Apr 14.

School of Biological Sciences, Washington State University, Pullman, WA, USA.

The endocrine system is known to mediate responses to environmental change and transitions between different life stages (e.g., a non-breeding to a breeding life stage). Read More

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Translocator Protein Modulation by 4'-Chlorodiazepam and NO Synthase Inhibition Affect Cardiac Oxidative Stress, Cardiometabolic and Inflammatory Markers in Isoprenaline-Induced Rat Myocardial Infarction.

Int J Mol Sci 2021 Mar 11;22(6). Epub 2021 Mar 11.

Institute of Medical Physiology "Richard Burian", Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia.

The possible cardioprotective effects of translocator protein (TSPO) modulation with its ligand 4'-Chlorodiazepam (4'-ClDzp) in isoprenaline (ISO)-induced rat myocardial infarction (MI) were evaluated, alone or in the presence of L-NAME. Wistar albino male rats (b.w. Read More

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Is meat from cull cows tougher?

Meat Sci 2021 Jul 18;177:108498. Epub 2021 Mar 18.

NSW Department of Primary Industries, Centre for Red Meat and Sheep Development, Cowra, NSW 2794, Australia.

Meat from cull cows is traditionally sold in Australia for mincemeat, but this study examined whether there is potential to add value by identifying meat of higher quality from older cattle. Dentition and ossification score were recorded for 173 Angus cattle of known age, ranging from 26 months to 12.6 years. Read More

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Impact of COVID-19 on exercise pathophysiology: a combined cardiopulmonary and echocardiographic exercise study.

J Appl Physiol (1985) 2021 05 25;130(5):1470-1478. Epub 2021 Mar 25.

Department of Cardiovascular, Neural and Metabolic Sciences, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milano, Italy.

Survivors from COVID-19 pneumonia can present with persisting multisystem involvement (lung, pulmonary vessels, heart, muscle, red blood cells) that may negatively affect exercise capacity. We sought to determine the extent and the determinants of exercise limitation in patients with COVID-19 at the time of hospital discharge. Eighteen consecutive patients with COVID-19 and 1:1 age-, sex-, and body mass index-matched controls underwent: spirometry, echocardiography, cardiopulmonary exercise test and exercise echocardiography for the study of pulmonary circulation. Read More

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Short-term accumulation and elimination of carbon-14 in the common carp Cyprinus carpio under laboratory conditions.

J Environ Radioact 2021 Jul 21;233:106585. Epub 2021 Mar 21.

LECO, IRSN, PSE-ENV, SRTE, Cadarache, BP3, 13115, Saint-Paul-lez-Durance, France. Electronic address:

This study examined the short term transfer of carbon-14 (C) in the common carp Cyprinus carpio under laboratory conditions. Various experiments were achieved in order to investigate direct or trophic transfer for 4 days, using waterborne C-labelled arginine or C-labelled food pellets respectively. Radiolabelled food was prepared with C-labelled arginine or glucose in order to test how transfer kinetics might vary with the biochemical form of C. Read More

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Can effective supervised pelvic floor muscle training be provided by primary care nurses? A randomized controlled trial.

Int Urogynecol J 2021 Oct 23;32(10):2717-2725. Epub 2021 Feb 23.

Urogynaecology Unit, University Hospitals Plymouth NHS Trust, Plymouth, PL6 8DH, UK.

Introduction And Hypothesis: To determine whether primary care nurses with no prior experience can, after training, provide effective supervised pelvic floor muscle training (PFMT) by a three-group parallel randomized controlled trial (RCT): primary care nurse, urogynaecology nurse specialist and controls undertaken in 11 primary care/general practices, covering urban and rural settings in SW England. The sample consisted of 337 women with weak pelvic floor muscles (Modified Oxford Score 2 or less) in a randomly sampled survey.

Methods: Following detailed instruction and training, primary care nurses recruited patients who were randomized to PFMT provided by them, a urogynaecology nurse specialist or a 'no training' control group. Read More

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October 2021

Skeletal Muscle Metabolomic Responses to Endurance and Resistance Training in Rats under Chronic Unpredictable Mild Stress.

Int J Environ Res Public Health 2021 02 9;18(4). Epub 2021 Feb 9.

School of Physical Education, Shanxi University, Taiyuan 030006, China.

The objectives of this study were to compare the antidepressant effects between endurance and resistance exercise for optimizing interventions and examine the metabolomic changes in different types of skeletal muscles in response to the exercise, using a rat model of chronic unpredictable mild stress (CUMS)-induced depression. There were 32 male Sprague-Dawley rats randomly divided into a control group (C) and 3 experimental groups: CUMS control (D), endurance exercise (E), and resistance exercise (R). Group E underwent 30 min treadmill running, and group R performed 8 rounds of ladder climbing, 5 sessions per week for 4 weeks. Read More

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February 2021

Effect of Quercetin-Loaded Mesoporous Silica Nanoparticles on Myocardial Ischemia-Reperfusion Injury in Rats and Its Mechanism.

Int J Nanomedicine 2021 2;16:741-752. Epub 2021 Feb 2.

Six Cardiovascular Departments of Cangzhou Central Hospital, Cangzhou, Hebei, 061001, People's Republic of China.

Background: Quercetin has potential value in treating cardiovascular diseases, but it is not suitable for clinical application due to its own water solubility. The limitation of quercetin can be distinctly ameliorated by delivering it with nanocarriers.

Objective: To determine the effect of quercetin-loaded mesoporous silica nanoparticles (Q-MSNs) on myocardial ischemia-reperfusion injury in rats and its mechanism. Read More

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February 2021