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https://www.readbyqxmd.com/read/27913649/identification-and-function-of-fibrocytes-in-skeletal-muscle-injury-repair-and-muscular-dystrophy
#1
Xingyu Wang, Wanming Zhao, Richard M Ransohoff, Lan Zhou
We identified and characterized the function of CD45(+)/collagen I(+) fibrocytes in acutely injured skeletal muscle of wild-type (WT) and Ccr2(-/-) mice, and in quadriceps and diaphragm muscles of mdx(5cv) mice, a mouse model for Duchenne muscular dystrophy. Fibrocytes were not detected in peripheral blood of WT mice after acute muscle injury or mdx(5cv) mice. Fibrocytes were detected in acutely injured muscles and in mdx(5cv) quadriceps and diaphragm muscles. These cells expressed F4/80 and CCR2, and they were mostly Ly6C(lo) They expressed a low level of collagens but a high level of profibrotic growth factors as compared with i...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27913050/congenital-high-airway-obstruction-syndrome-chaos-a-perinatal-autopsy-case-report
#2
Manasi Gosavi, Lalit Kumar, Ashwini Ratnakar, Hema Bannur
INTRODUCTION: Congenital High Airway Obstruction Syndrome (CHAOS) is a rare anomaly where a partial or complete obstruction of upper airway is seen. As a consequence, the foetus develops enlarged lungs, inverted or flattened diaphragm and ascites. The pathological findings in a case of CHAOS is presented. CASE REPORT: A 28-year-old primigravida presented with a history of 5 months of amenorrhoea. Ultrasonography revealed enlarged echogenic lungs, cardiac mid-position, inverted diaphragm, foetal ascites and talipes of left foot...
October 26, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27910408/universal-handheld-micropipette
#3
Justin Beroz, A John Hart
The handheld micropipette is the most ubiquitous instrument for precision handling of microliter-milliliter liquid volumes, which is an essential capability in biology and chemistry laboratories. The range of one pipette is typically adjustable up to 10-fold its minimum volume, requiring the use and maintenance of multiple pipettes for liquid handling across larger ranges. Here we propose a design for a single handheld pipette adjustable from 0.1 μl to 1000 μl (i.e., 10(4)-fold) which spans the range of an entire suite of current commercial pipettes...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909629/stereotactic-body-radiotherapy-for-hepatocellular-carcinoma-resulting-in-a-durable-relapse-free-survival-a-case-report
#4
Samual Francis, Ned Williams, Christopher J Anker, Akram Shaaban, Robin Kim, Dennis Shrieve, Jonathan Tward
The standard of care for localized hepatocellular carcinoma (HCC) is surgical resection. For patients who decline or who are unfit for surgery, stereotactic body radiotherapy (SBRT) is emerging as a viable treatment approach. We present a case of a 77-year-old female in whom an early stage HCC was incidentally discovered. Given her religious edicts as a devout Jehovah's Witness and her subsequent desire to avoid a blood transfusion, she declined surgical resection or transplant due to the risk of hemorrhage...
October 24, 2016: Curēus
https://www.readbyqxmd.com/read/27909226/unique-cytokine-and-chemokine-responses-to-exertional-heat-stroke-in-mice
#5
Michelle A King, Lisa R Leon, Deborah A Morse, Thomas L Clanton
In heat stroke, cytokines are believed to play important roles in multi-organ dysfunction and recovery of damaged tissue. The time course of the cytokine response is well defined in passive heat stroke (PHS), but little is known about exertional heat stroke (EHS). In this study we used a recently developed mouse EHS model to measure the responses of circulating cytokines/chemokines and cytokine gene expression in muscle. A very rapid increase in circulating IL-6 was observed at max core temperature (Tc,max) that peaked at 0...
December 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27908010/information-theoretical-noninvasive-damage-detection-in-bridge-structures
#6
Amila Sudu Ambegedara, Jie Sun, Kerop Janoyan, Erik Bollt
Damage detection of mechanical structures such as bridges is an important research problem in civil engineering. Using spatially distributed sensor time series data collected from a recent experiment on a local bridge in Upper State New York, we study noninvasive damage detection using information-theoretical methods. Several findings are in order. First, the time series data, which represent accelerations measured at the sensors, more closely follow Laplace distribution than normal distribution, allowing us to develop parameter estimators for various information-theoretic measures such as entropy and mutual information...
November 2016: Chaos
https://www.readbyqxmd.com/read/27905432/palaeontology-ancient-reptile-had-a-diaphragm
#7
(no author information available yet)
No abstract text is available yet for this article.
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27904539/the-effect-of-renal-transplantation-on-respiratory-muscle-strength-in-patients-with-end-stage-renal-disease
#8
Sasan Tavana, Samaneh Mirzaei
BACKGROUND: There is evidence of musculoskeletal and respiratory involvement in patients with chronic kidney disease (CKD). This is attributed to protein calorie imbalance that is caused by the disease process, and hemodialysis and is generally referred to as uremic myopathy. This results in calcification of respiratory muscles such as diaphragm and intercostal muscles. There are limited data about respiratory muscle strength in patients with CKD. We intended to evaluate the effect of kidney transplantation on respiratory muscles strength in patients with CKD...
2016: Tanaffos
https://www.readbyqxmd.com/read/27904119/an-autopsy-case-of-amyotrophic-lateral-sclerosis-with-diaphragm-pacing
#9
Hisashi Ito, Tetsumasa Kamei, Sanae Odake, Masayuki Nakano, Riki Okeda, Shunsaku Kohriki, Jun Kawachi, Raymond P Onders, Fumihito Yoshii
Respiratory insufficiency is a critical problem in amyotrophic lateral sclerosis (ALS) patients. We herein present the case of an autopsied patient with sporadic ALS who underwent diaphragm pacing (DP). The pathology showed several localized adhesions with a markedly atrophied diaphragm. A marked loss of motor neurons with Bunina bodies and phosphorylated TDP-43 positive inclusions was found in the spinal cord and primary motor cortex. Mild hyalinization and a few multinucleated giant cells were present around the electrode tracks in the diaphragm...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27902641/diaphragmatic-and-intercostal-electromyographic-activity-during-neostigmine-sugammadex-and-neostigmine-sugammadex-enhanced-recovery-after-neuromuscular-blockade-a-randomised-controlled-volunteer-study
#10
Guy Cammu, Tom Schepens, Nikolaas De Neve, Davina Wildemeersch, Luc Foubert, Philippe G Jorens
BACKGROUND: Electromyographic activity of the diaphragm (EMGdi) during weaning from mechanical ventilation is increased after sugammadex compared with neostigmine. OBJECTIVE: To determine the effect of neostigmine on EMGdi and surface EMG (sEMG) of the intercostal muscles during antagonism of rocuronium block with neostigmine, sugammadex and neostigmine followed by sugammadex. DESIGN: Randomised, controlled, double-blind study. SETTING: Intensive care research unit...
January 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/27896830/vagal-nerve-endings-in-visceral-pleura-and-triangular-ligaments-of-the-rat-lung
#11
Feng-Bin Wang, Yi-Han Liao, Yao-Chen Wang
The inner thoracic cavity is lined by the parietal pleura, and the lung lobes are covered by the visceral pleura. The parietal and visceral plurae form the pleural cavity that has negative pressure within to enable normal respiration. The lung tissues are bilaterally innervated by vagal and spinal nerves, including sensory and motor components. This complicated innervation pattern has made it difficult to discern the vagal vs. spinal processes in the pulmonary visceral pleura. With and without vagotomy, we identified vagal nerve fibres and endings distributed extensively in the visceral pleura ('P'-type nerve endings) and triangular ligaments ('L'-type nerve endings) by injecting wheat germ agglutinin-horseradish peroxidase as a tracer into the nucleus of solitary tract or nodose ganglion of male Sprague-Dawley rats...
November 29, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/27895076/mesothelial-cells-create-a-novel-tissue-niche-that-facilitates-gastric-cancer-invasion
#12
Masamitsu Tanaka, Sei Kuriyama, Go Itoh, Daichi Maeda, Akiteru Goto, Yutaro Tamiya, Kazuyoshi Yanagihara, Masakazu Yashiro, Namiko Aiba
Peritoneal mesothelial cells (PMC) cover organ surfaces in the abdominal cavity. In this study, lineage tracing revealed that PMC guide cancer cell invasion in the gastric wall and in peritoneal metastatic lesions. Serosal PMC covering the stomach surface entered the gastric wall to create a novel niche that favored gastric cancer cell invasion. PMC infiltration was induced by incorporation of cancer cell-derived, Wnt3a-containing extracellular vesicles (EV). Infiltrated PMC in turn promoted subserosal invasion of cancer cells...
November 28, 2016: Cancer Research
https://www.readbyqxmd.com/read/27892918/effect-of-diaphragm-and-lubricant-gel-provision-on-human-papillomavirus-infection-among-women-provided-with-condoms-a-randomized-controlled-trial-correction
#13
(no author information available yet)
No abstract text is available yet for this article.
August 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27891518/size-and-proportions-of-slow-twitch-and-fast-twitch-muscle-fibers-in-human-costal-diaphragm
#14
Marija Meznaric, Erika Cvetko
Smaller diaphragmatic motor unit potentials (MUPs) compared to MUPs of limb muscles lead to the hypothesis that diaphragmatic muscle fibers, being the generators of MUPs, might be also smaller. We compared autopsy samples of costal diaphragm and vastus lateralis of healthy men with respect to fibers' size and expression of slow myosin heavy chain isoform (MyHC-1) and fast 2A isoform (MyHC-2A). Diaphragmatic fibers were smaller than fibers in vastus lateralis with regard to the mean minimal fiber diameter of slow-twitch (46...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27891099/reduced-phrenic-motoneuron-recruitment-during-sustained-inspiratory-threshold-loading-compared-to-single-breath-loading-a-twitch-interpolation-study
#15
Mathieu Raux, Alexandre Demoule, Stefania Redolfi, Capucine Morelot-Panzini, Thomas Similowski
In humans, inspiratory constraints engage cortical networks involving the supplementary motor area. Functional magnetic resonance imaging (fMRI) shows that the spread and intensity of the corresponding respiratory-related cortical activation dramatically decrease when a discrete load becomes sustained. This has been interpreted as reflecting motor cortical reorganization and automatisation, but could proceed from sensory and/or affective habituation. To corroborate the existence of motor reorganization between single-breath and sustained inspiratory loading (namely changes in motor neurones recruitment), we conducted a diaphragm twitch interpolation study based on the hypothesis that motor reorganization should result in changes in the twitch interpolation slope...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27891095/differential-rna-expression-profile-of-skeletal-muscle-induced-by-experimental-autoimmune-myasthenia-gravis-in-rats
#16
Henry J Kaminski, Keiichi Himuro, Jumana Alshaikh, Bendi Gong, Georgiana Cheng, Linda L Kusner
The differential susceptibility of skeletal muscle by myasthenia gravis (MG) is not well understood. We utilized RNA expression profiling of extraocular muscle (EOM), diaphragm (DIA), and extensor digitorum (EDL) of rats with experimental autoimmune MG (EAMG) to evaluate the hypothesis that muscles respond differentially to injury produced by EAMG. EAMG was induced in female Lewis rats by immunization with acetylcholine receptor purified from the electric organ of the Torpedo. Six weeks later after rats had developed weakness and serum antibodies directed against the AChR, animals underwent euthanasia and RNA profiling performed on DIA, EDL, and EOM...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27890461/muscle-weakness-in-respiratory-and-peripheral-skeletal-muscles-in-a-mouse-model-for-nebulin-based-nemaline-myopathy
#17
Barbara Joureau, Josine M de Winter, Kelly Stam, Henk Granzier, Coen A C Ottenheijm
Nemaline myopathy is among the most common non-dystrophic congenital myopathies, and is characterized by the presence of nemaline rods in skeletal muscles fibers, general muscle weakness, and hypotonia. Although respiratory failure is the main cause of death in nemaline myopathy, only little is known regarding the contractile strength of the diaphragm, the main muscle of inspiration. To investigate diaphragm contractility, in the present study we took advantage of a mouse model for nebulin-based nemaline myopathy that we recently developed...
October 25, 2016: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27888814/diaphragmatic-dysfunction-after-thoracic-operations
#18
Henning Gaissert, Susan R Wilcox
The perioperative management of diaphragmatic weakness and phrenic nerve dysfunction is complex, due to varied etiologies and clinical presentations. The factors leading to diaphragmatic weakness may culminate after the operation with transient or persistent respiratory failure. This review discusses diaphragmatic disorders and postoperative respiratory failure caused by unilateral or bilateral diaphragmatic impairment. The origins of neuromuscular weakness involving the diaphragm are diverse, and often lie within the domains of different medical specialties, with only a portion of the condition related to surgical intervention...
November 26, 2016: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/27886855/electrically-induced-mechanomyograms-reflect-inspiratory-muscle-strength-in-young-or-elderly-subjects
#19
Shogo Watanabe, Ippei Nojima, Yuuna Agarie, Tatsunori Watanabe, Shinichi Fukuhara, Takeshi Fujinaga, Hisao Oka
BACKGROUND: Respiratory muscle strength has been used as a tool for evaluating respiratory rehabilitation in chronic obstructive pulmonary disease. However, mouth pressure measurement evaluated by maximum expiratory mouth pressure (PEmax) or inspiratory mouth pressure (PImax) offers an indirect method for measuring respiratory muscle strength. We demonstrated the evaluation of diaphragm contractility using a mechanomyogram (MMG), which is the mechanical signal generated by the motion of the diaphragm induced by the electric stimulation of the phrenic nerve...
November 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27884852/diagnostic-and-prognostic-biomarkers-in-the-rational-assessment-of-mesothelioma-diaphragm-study-protocol-of-a-prospective-multicentre-observational-study
#20
Selina Tsim, Caroline Kelly, Laura Alexander, Carol McCormick, Fiona Thomson, Rosie Woodward, John E Foster, David B Stobo, Jim Paul, Nick A Maskell, Anthony Chalmers, Kevin G Blyth
INTRODUCTION: Malignant pleural mesothelioma (MPM) is an asbestos-related cancer, which is difficult to diagnose. Thoracoscopy is frequently required but is not widely available. An accurate, non-invasive diagnostic biomarker would allow early specialist referral, limit diagnostic delays and maximise clinical trial access. Current markers offer insufficient sensitivity and are not routinely used. The SOMAmer proteomic classifier and fibulin-3 have recently demonstrated sensitivity and specificity exceeding 90% in retrospective studies...
November 24, 2016: BMJ Open
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