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https://www.readbyqxmd.com/read/28814739/re-characterization-of-the-glomerulopathy-in-cd2ap-deficient-mice-by-high-resolution-helium-ion-scanning-microscopy
#1
Kenji Tsuji, Teodor G Păunescu, Hani Suleiman, Dongping Xie, Fahmy A Mamuya, Jeffrey H Miner, Hua A Jenny Lu
Helium ion scanning microscopy (HIM) is a novel technology that directly visualizes the cell surface ultrastructure without surface coating. Despite its very high resolution, it has not been applied extensively to study biological or pathology samples. Here we report the application of this powerful technology to examine the three-dimensional ultrastructural characteristics of proteinuric glomerulopathy in mice with CD2-associated protein (CD2AP) deficiency. HIM revealed the serial alteration of glomerular features including effacement and disorganization of the slit diaphragm, followed by foot process disappearance, flattening and fusion of major processes, and eventual transformation into a podocyte sheet as the disease progressed...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814668/injury-induced-actin-cytoskeleton-reorganization-in-podocytes-revealed-by-super-resolution-microscopy
#2
Hani Y Suleiman, Robyn Roth, Sanjay Jain, John E Heuser, Andrey S Shaw, Jeffrey H Miner
The architectural integrity of tissues requires complex interactions, both between cells and between cells and the extracellular matrix. Fundamental to cell and tissue homeostasis are the specific mechanical forces conveyed by the actomyosin cytoskeleton. Here we used super-resolution imaging methods to visualize the actin cytoskeleton in the kidney glomerulus, an organized collection of capillaries that filters the blood to make the primary urine. Our analysis of both mouse and human glomeruli reveals a network of myosin IIA-containing contractile actin cables within podocyte cell bodies and major processes at the outer aspects of the glomerular tuft...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28810788/direct-measurement-of-site-specific-rates-of-reactions-of-h-with-c3h8-i-c4h10-and-n-c4h10
#3
Chia-Chieh Lin, Wei-Yu Chen, Hiroyuki Matsui, Niann-Shiah Wang
We measured the rates of abstraction of a hydrogen atom from specific sites in propane C3H8, 2-methyl propane (i-C4H10), and butane (n-C4H10); the sites are a primary hydrogen of C3H8 and i-C4H10 and a secondary hydrogen of n-C4H10. The excellent reproducibility of conditions of a diaphragm-less shock tube enabled us to conduct comparative measurements of the evolution of H atoms in three mixtures-(i) 0.5 ppm C2H5I + Ar, (ii) 0.5 ppm C2H5I + 50-100 ppm alkane as C3H8 or i-C4H10 or n-C4H10 + Ar, and (iii) the same concentrations of alkane + Ar without C2H5I-in the temperature range 1000-1200 K and at a pressure of 2...
August 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28809841/measuring-neuromuscular-junction-functionality
#4
Emanuele Rizzuto, Simona Pisu, Carmine Nicoletti, Zaccaria Del Prete, Antonio Musarò
Neuromuscular junction (NMJ) functionality plays a pivotal role when studying diseases in which the communication between motor neuron and muscle is impaired, such as aging and amyotrophic lateral sclerosis (ALS). Here we describe an experimental protocol that can be used to measure NMJ functionality by combining two types of electrical stimulation: direct muscle membrane stimulation and the stimulation through the nerve. The comparison of the muscle response to these two different stimulations can help to define, at the functional level, potential alterations in the NMJ that lead to functional decline in muscle...
August 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28807305/evaluation-of-the-priocheck%C3%A2-trichinella-aad-kit-for-the-digestion-and-recovery-of-larvae-in-pork-horse-meat-and-wild-meat
#5
Kelly Konecsni, Cheryl Scheller, Brad Scandrett, Patrik Buholzer, Alvin Gajadhar
The artificial digestion magnetic stirrer method using pepsin protease and hydrochloric acid is the standard assay for the detection of Trichinella larvae in muscle of infected animals. Recently, an alternative enzyme, serine protease, was employed in the development of a commercially available digestion kit (PrioCHECK™ Trichinella AAD Kit). This assay requires a higher digestion temperature of 60°C which kills the larvae during the digestion process, mitigating the risk of environmental contamination from the parasite...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28804947/periodontitis-and-non-alcoholic-fatty-liver-disease-a-population-based-cohort-investigation-in-the-study-of-health-in-pomerania
#6
Aderonke A Akinkugbe, Gary D Slade, A Sidney Barritt, Steven Offenbacher, Astrid Petersmann, Thomas Kocher, Markus M Lerch, Julia Mayerle, Henry Völzke, Gerardo Heiss, Birte Holtfreter
Non-alcoholic fatty liver disease (NAFLD) affects 20-30% of adults with risk factors like obesity and insulin resistance putatively acting through chronic low-grade inflammation. Because periodontitis elicits low-grade inflammation, we hypothesized that it could contribute to NAFLD occurrence. Objective To investigate epidemiologic associations between periodontitis and the incidence of NAFLD among 2,623 participants of the Study of Health in Pomerania METHODS: Periodontitis at baseline was defined as the percentage of sites (0%, 1-30%, ≥30%) with 1) clinical attachment level (CAL) ≥3mm; 2) probing pocket depth (PD) ≥4mm...
August 14, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28804698/a-novel-technique-of-posterolateral-suturing-in-thoracoscopic-diaphragmatic-hernia-repair
#7
Yoon Jung Boo, Stephan Rohleder, Oliver J Muensterer
Background  Closure of the posterolateral defect in some cases of congenital diaphragmatic hernia (CDH) can be difficult. Percutaneous transcostal suturing is often helpful to create a complete, watertight closure of the diaphragm. A challenge with the technique is passing the needle out the same tract that it entered so that no skin is caught when the knots are laid down into the subcutaneous tissue. This report describes a novel technique using a Tuohy needle to percutaneously suture the posterolateral defect during thoracoscopic repair of CDH...
January 2017: European Journal of Pediatric Surgery Reports
https://www.readbyqxmd.com/read/28804545/hydrogen-sulfide-prevents-diaphragm-weakness-in-cecal-ligation-puncture-induced-sepsis-by-preservation-of-mitochondrial-function
#8
Hai-Xia Zhang, Jun-Ming Du, Zhong-Nuo Ding, Xiao-Yan Zhu, Lai Jiang, Yu-Jian Liu
Mitochondrial dysfunction plays an important role in the pathogenesis of diaphragm weakness during sepsis. Recently, hydrogen sulfide (H2S), a gaseous transmitter endogenously generated by cystathionine-β-synthase (CBS), cystathionine-γ-lyase (CSE) and 3-mercaptopyruvate sulfurtransferase (3-MST), is found to improve mitochondrial function. The present study aimed to examine whether H2S synthases are expressed in the diaphragm, and investigated the effect of H2S donor in sepsis-induced diaphragm weakness and its relationship with mitochondrial function...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28800626/targeting-lysyl-oxidase-reduces-peritoneal-fibrosis
#9
Christopher R Harlow, Xuan Wu, Marielle van Deemter, Fiona Gardiner, Craig Poland, Rebecca Green, Sana Sarvi, Pamela Brown, Karl E Kadler, Yinhui Lu, J Ian Mason, Hilary O D Critchley, Stephen G Hillier
BACKGROUND: Abdominal surgery and disease cause persistent abdominal adhesions, pelvic pain, infertility and occasionally, bowel obstruction. Current treatments are ineffective and the aetiology is unclear, although excessive collagen deposition is a consistent feature. Lysyl oxidase (Lox) is a key enzyme required for crosslinking and deposition of insoluble collagen, so we investigated whether targeting Lox might be an approach to reduce abdominal adhesions. METHODS: Female C57Bl/6 mice were treated intraperitoneally with multiwalled carbon nanotubes (NT) to induce fibrosis, together with chemical (ß-aminoproprionitrile-BAPN) or miRNA Lox inhibitors, progesterone or dexamethasone...
2017: PloS One
https://www.readbyqxmd.com/read/28798156/phosphodiesterase-4-inhibitor-and-phosphodiesterase-5-inhibitor-combination-therapy-has-antifibrotic-and-anti-inflammatory-effects-in-mdx-mice-with-duchenne-muscular-dystrophy
#10
Yasunori Nio, Masayuki Tanaka, Yoshihiko Hirozane, Yo Muraki, Mitsugi Okawara, Masatoshi Hazama, Takanori Matsuo
Duchenne muscular dystrophy (DMD) is the most common inherited muscular dystrophy. Patients experience DMD in their 20s from cardiac or respiratory failure related to progressive muscle wasting. Currently, the only treatments for the symptoms of DMD are available. Muscle fibrosis, a DMD feature, leads to reduced muscle function and muscle mass, and hampers pharmaceutical therapeutic efficacy. Although antifibrotic agents may be useful, none is currently approved. Phosphodiesterase (PDE)-4 inhibitors have exhibited antifibrotic effects in human and animal models...
August 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28797888/the-weighty-issue-of-obesity-in-paediatric-respiratory-medicine
#11
REVIEW
Dominic A Fitzgerald
Some have observed that developed world is fat and getting fatter. This is even extending into the developing world, and it is important to appreciate that the consequences of childhood obesity last into adulthood and are associated with premature death. From the paediatric respiratory perspective, the deposition of excess adipose tissue in the thoraco-abdominal region begins early in life and is believed to alter diaphragm mobility and chest wall expansion, reduce lung compliance, and result in a rapid shallow breathing pattern with an increased work of breathing and reduction in maximum ventilatory capacity...
June 11, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28797108/natural-disease-history-of-mouse-models-for-limb-girdle-muscular-dystrophy-types-2d-and-2f
#12
S Pasteuning-Vuhman, K Putker, C L Tanganyika-de Winter, J W Boertje-van der Meulen, L van Vliet, M Overzier, J J Plomp, A Aartsma-Rus, M van Putten
Limb-girdle muscular dystrophy types 2D and 2F (LGMD 2D and 2F) are autosomal recessive disorders caused by mutations in the alpha- and delta sarcoglycan genes, respectively, leading to severe muscle weakness and degeneration. The cause of the disease has been well characterized and a number of animal models are available for pre-clinical studies to test potential therapeutic interventions. To facilitate transition from drug discovery to clinical trials, standardized procedures and natural disease history data were collected for these mouse models...
2017: PloS One
https://www.readbyqxmd.com/read/28795041/extra-gastrointestinal-stromal-tumor-presenting-as-an-anterior-chest-wall-mass
#13
Junghyeon Lim, Sung Woo Cho, Hee Sung Lee, Hyoung Soo Kim, Yong Han Kim, Bong Suk Park
A 71-year-old man was referred for an anterior chest wall mass. Chest computed tomography (CT) and positron emission tomography-CT suggested a malignant tumor. Surgical biopsy through a vertical subxiphoid incision revealed an extra-gastrointestinal stromal tumor (EGIST). En bloc resection of the tumor, including partial resection of the sternum, costal cartilage, pericardium, diaphragm, and peritoneum, was performed. Pathologic evaluation revealed a negative resection margin and confirmed the tumor as an EGIST...
August 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28792798/cholecystopexy-and-pericardial-pseudocyst-removal-in-a-dog-with-a-congenital-peritoneopericardial-diaphragmatic-hernia
#14
Quentin Cabon, Eric Norman Carmel, Julien Cabassu
A 4 mo old spayed female golden retriever was presented with a peritoneopericardial diaphragmatic hernia (PPDH) that was diagnosed during neutering. Echocardiography revealed a fluid-filled structure and parts of the liver in the pericardial cavity. Computed tomography confirmed the existence of the PPDH and the herniation of the right medial liver lobe and the gallbladder. Cystic masses were observed in the pericardial and the peritoneal cavities, possibly communicating through the PPDH. A median laparotomy revealed a single lobulated cystic lesion extending into both the pericardial and peritoneal cavities through the PPDH...
August 9, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28790924/effects-of-ionizing-irradiation-on-mouse-diaphragmatic-skeletal-muscle
#15
Tingyang Zhou, Lanchun Lu, Shiyong Wu, Li Zuo
Undesirable exposure of diaphragm to radiation during thoracic radiation therapy has not been fully considered over the past decades. Our study aims to examine the potential biological effects on diaphragm induced by radiation. One-time ionizing irradiation of 10 Gy was applied either to the diaphragmatic region of mice or to the cultured C2C12 myocytes. Each sample was then assayed for muscle function, oxidative stress, or cell viability on days 1, 3, 5, and 7 after irradiation. Our mouse model shows that radiation significantly reduced muscle function on the 5th and 7th days and increased reactive oxygen species (ROS) formation in the diaphragm tissue from days 3 to 7...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790839/isolated-thoracic-perfusion-with-chemofiltration-for-progressive-malignant-pleural-mesothelioma
#16
Karl Reinhard Aigner, Emir Selak, Sabine Gailhofer
INTRODUCTION: Therapy of malignant pleural mesothelioma and especially the adequate role of surgery in this context remain the subject of controversial discussions. Radical surgery in particular, which is associated with substantial morbidity, failed to translate into a definite survival advantage. We report on interim results of an ongoing Phase II study of regional chemotherapy in terms of isolated thoracic perfusion with chemofiltration (ITP-F). PATIENTS AND METHODS: Twenty-eight patients (25 male, 3 female, mean age 63...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28790240/-successful-treatment-of-acute-empyema-due-to-rupture-of-pyogenic-liver-abscess
#17
Isamu Watanabe, Naoki Kanauchi, Hikaru Watanabe, Akira Hamada
Cases of rescue after rupture of pyogenic liver abscess into the thorax are rare. Here, we report 2 cases of rescue in patients with acute empyema due to rupture of a suppurative abscess into the thorax. Case 1:A 61-year-old male had high fever of 39 °C and right abdominal pain. Thoracic computed tomography(CT) showed encapsulated pleural effusion in the right thorax and ring-like enhancement in the right liver. The diagnosis was acute empyema caused by rupture of liver abscess. The pathogenic bacteria were Streptococcus group...
August 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28790100/missed-diaphragmatic-injury-after-blunt-trauma-presenting-with-colonic-strangulation-a-rare-scenario
#18
Atish Kumar, Dinesh Bagaria, Amulya Ratan, Amit Gupta
Diaphragmatic rupture occurs in 4%-5% cases of thoracoabdominal injuries. It may present acutely, in a delayed fashion or as a complicated hernia. We are describing the case of a young male presenting in respiratory distress with history of chest trauma 1.5 years back. On investigation, he was found to have left side diaphragmatic hernia containing gangrenous colon with lung collapse. The patient underwent successful operative intervention and discharged after 25 days of hospital stay. Record review suggested that the above mentioned diaphragm injury was missed in his evaluation 1...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28790008/compensatory-effects-following-unilateral-diaphragm-paralysis
#19
Obaid U Khurram, Gary C Sieck, Carlos B Mantilla
Injury to nerves innervating respiratory muscles such as the diaphragm muscle results in significant respiratory compromise. Electromyography (EMG) and transdiaphragmatic pressure (Pdi) measurements reflect diaphragm activation and force generation. Immediately after unilateral diaphragm denervation (DNV), ventilatory behaviors can be accomplished without impairment, but Pdi generated during higher force non-ventilatory behaviors is significantly decreased. We hypothesized that 1) the initial reduction in Pdi during higher force behaviors after DNV is ameliorated after 14 days, and 2) changes in Pdi over time after DNV are associated with concordant changes in contralateral diaphragm EMG activity and ventilatory parameters...
August 5, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28781878/bilateral-diaphragmatic-paresis-following-pediatric-liver-transplantation
#20
Jillian Olmscheid, Helena Molero, William Gershan, Nadir Demirel
BACKGROUND: Although diaphragm paresis or paralysis is fairly common following cardiac procedures; it is a less common complication following liver transplantation. Unilateral diaphragm paresis, usually right sided, has been described following liver transplantation in adults and has been rarely described in children. PURPOSE: Diaphragmatic injury following LT is often unrecognized and is typically unilateral, involving the right hemidiaphragm. Bilateral diaphragm dysfunction following liver transplantation in children is a rare complication...
2017: SAGE open medical case reports
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