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https://www.readbyqxmd.com/read/28324489/monitoring-mitochondrial-changes-by-alteration-of-the-pink1-parkin-signaling-in-drosophila
#1
Tsuyoshi Inoshita, Kahori Shiba-Fukushima, Hongrui Meng, Nobutaka Hattori, Yuzuru Imai
Mitochondrial quality control is a key process in tissues with high energy demands, such as the brain and muscles. Recent studies using Drosophila have revealed that the genes responsible for familial forms of juvenile Parkinson's disease (PD), PINK1 and Parkin regulate mitochondrial function and motility. Cell biological analysis using mammalian cultured cells suggests that the dysregulation of mitophagy by PINK1 and Parkin leads to neurodegeneration in PD. In this chapter, we describe the methods to monitor mitochondrial morphology in the indirect flight muscles of adult Drosophila and Drosophila primary cultured neurons and the methods to analyze the motility of mitochondria in the axonal transport of living larval motor neurons...
March 22, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28324340/quantitative-18-f-fluorocholine-positron-emission-tomography-for-prostate-cancer-correlation-between-kinetic-parameters-and-gleason-scoring
#2
Joshua J D Schaefferkoetter, Ziting Wang, Mary C Stephenson, Sharmili Roy, Maurizio Conti, Lars Eriksson, David W Townsend, Thomas Thamboo, Edmund Chiong
BACKGROUND: The use of radiolabeled choline as a positron emission tomography (PET) agent for imaging primary tumors in the prostate has been evaluated extensively over the past two decades. There are, however, conflicting reports of its sensitivity and the relationship between choline PET imaging and disease staging is not fully understood. Moreover, relatively few studies have investigated the correlation between tracer uptake and histological tumor grade. This work quantified (18)F-fluorocholine in tumor and healthy prostate tissue using pharmacokinetic modeling and stratified uptake parameters by histology grade...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28324283/prognostic-value-of-computed-tomography-measured-parameters-of-body-composition-in-primary-operable-gastrointestinal-cancers
#3
Douglas Black, Craig Mackay, George Ramsay, Zaid Hamoodi, Shayanthan Nanthakumaran, Kenneth G M Park, Malcolm A Loudon, Colin H Richards
BACKGROUND: Previous reports suggest that body composition parameters can be used to predict outcomes for patients with gastrointestinal (GI) cancers. However, evidence for an association with long-term survival is conflicting, with much of the data derived from patients with advanced disease. This study examined the effect of body composition on survival in primary operable GI cancer. METHODS: Patients with resectable adenocarcinoma of the GI tract (esophagus, stomach, colon, rectum) between 2006 and 2014 were identified from a prospective database...
March 21, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28324104/vasoprotective-activities-of-the-adrenomedullin-ramp2-system-in-endothelial-cells
#4
Xian Xian, Takayuki Sakurai, Akiko Kamiyoshi, Yuka Ichikawa-Shindo, Megumu Tanaka, Teruhide Koyama, Hisaka Kawate, Lei Yang, Tian Liu, Akira Imai, Liuyu Zhai, Kazutaka Hirabayashi, Kun Dai, Keiya Tanimura, Teng Liu, Nanqi Cui, Kyoko Igarashi, Akihiro Yamauchi, Takayuki Shindo
Neointimal hyperplasia is the primary lesion underlying atherosclerosis and restenosis after coronary intervention. We previously described the essential angiogenic function of the adrenomedullin (AM)-receptor activity-modifying protein 2 (RAMP2) system. In the present study, we assessed the vasoprotective actions of the endogenous AM-RAMP2 system using a wire-induced vascular injury model. We found that neointima formation and vascular smooth muscle cell proliferation were enhanced in RAMP2+/- male mice. The injured vessels from RAMP2+/- mice showed greater macrophage infiltration, inflammatory cytokine expression and oxidative stress than vessels from wild-type mice, and less re-endothelialization...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323411/engineering-an-injectable-muscle-specific-microenvironment-for-improved-cell-delivery-using-a-nanofibrous-extracellular-matrix-hydrogel
#5
Nikhil Rao, Gillie Agmon, Matthew T Tierney, Jessica L Ungerleider, Rebecca L Braden, Alessandra Sacco, Karen L Christman
Injection of skeletal muscle progenitors has the potential to be a minimally invasive treatment for a number of diseases that negatively affect vasculature and skeletal muscle, including peripheral artery disease (PAD). However, success with this approach has been limited because of poor transplant cell survival. This is primarily attributed to cell death due to extensional flow through the needle, the harsh ischemic environment of the host tissue, a deleterious immune cell response, and a lack of biophysical cues supporting exogenous cell viability...
March 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28322724/valosin-containing-protein-vcp-p97-inhibitors-relieve-mitofusin-dependent-mitochondrial-defects-due-to-vcp-disease-mutants
#6
Ting Zhang, Prashant Mishra, Bruce Hay, David Chan, Ming Guo
Missense mutations of valosin-containing protein (VCP) cause an autosomal dominant disease known as inclusion body myopathy, Paget disease with frontotemporal dementia (IBMPFD) and other neurodegenerative disorders. The pathological mechanism of IBMPFD is not clear and there is no treatment. We show that endogenous VCP negatively regulates Mitofusin, which is required for outer mitochondrial membrane fusion. Because 90% of IBMPFD patients have myopathy, we generated an in vivo IBMPFD model in adult Drosophila muscle, which recapitulates disease pathologies...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28320166/the-duration-of-the-cortical-silent-period-is-not-abnormal-in-restless-legs-syndrome-willis-ekbom-disease
#7
Joselisa Péres Queiroz de Paiva, Samir Câmara Magalhães, Gilmar Fernandes do Prado, Alan Luiz Eckeli, Alain Kaelin-Lang, Adriana Bastos Conforto
OBJECTIVE: To compare the duration of the cortical silent period (CSP) measured in a hand muscle in subjects with primary Restless Legs Syndrome (RLS/WED) and controls, using four different methods of analysis. METHODS: The CSP to transcranial magnetic stimulation of the dominant motor cortex was assessed in the abductor digiti minimi of 33 subjects with RLS/WED and 24 controls. CSP duration was measured by an automated and three visually-guided methods. RESULTS: There were significant differences between absolute values of CSP duration according to the method of analysis...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320154/advances-in-assessing-myotonia-can-sensor-engineered-glove-have-a-role
#8
Simona Portaro, Margherita Russo, Antonino Naro, Alessia Bramanti, Placido Bramanti, Carmelo Rodolico, Rocco Salvatore Calabrò
Non-dystrophic (NDMs) and Dystrophic Myotonias (DMs) are diseases characterized by the presence of myotonia with or without muscle weakness. A standardized myotonia assessment is important to more objectively quantify the handgrip myotonia. We screened 10 patients affected by NDM and 10 patients with DM, using the sensor-engineered glove (SEG). The time required to perform a complete finger extension (grip myotonia time, GMT) at maximum velocity (MV) after maximum voluntary contraction (MVC) was evaluated through an ad hoc protocol including rest, exercise, and ice effects on handgrip myotonia...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320130/spg2-mimicking-multiple-sclerosis-in-a-family-identified-using-next-generation-sequencing
#9
Anna Rubegni, Carla Battisti, Alessandra Tessa, Alfonso Cerase, Stefano Doccini, Alessandro Malandrini, Filippo M Santorelli, Antonio Federico
Several single gene disorders can potentially be overlooked in the differential diagnostic evaluation of patients with multiple sclerosis (MS). Pelizaeus-Merzbacher disease and spastic paraplegia type 2 are allelic X-linked disorders associated with defective myelination of the central nervous system and mutations in PLP1. Neurological symptoms are occasionally observed in female carriers of these mutations. Two women - the proposita (Pt1) and her mother (Pt2) - reported walking difficulties since adolescence and showed progressive cognitive decline...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320129/immunoglobulin-therapy-in-the-treatment-of-multifocal-motor-neuropathy
#10
REVIEW
Aditya Kumar, Huned S Patwa, Richard J Nowak
Multifocal motor neuropathy (MMN) is a chronic immune-mediated disorder leading to slowly progressive muscle weakness and wasting. Current treatments are aimed at modulating the immune system in order to avoid further decline and to maintain functional status. Intravenous immunoglobulin (IVIg) is widely used in the treatment of immune-mediated disorders and is the only treatment approved for MMN. While patients do remain stable with maintenance IVIg treatment, most patients will slowly deteriorate over many years...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319897/dialysis-membrane-enforced-microelectrode-array-measurement-of-diverse-gut-electrical-activity
#11
Naoko Iwata, Takumi Fujimura, Chiho Takai, Kei Odani, Shin Kawano, Shinsuke Nakayama
A variety of electrical activities occur depending on the functional state in each section of the gut, but the application of microelectrode array (MEA) is rather limited. We thus developed a dialysis membranes-enforced technique to investigate diverse and complex spatio-temporal electrical activity in the gut. Muscle sheets isolated from the gastrointestinal (GI) tract of mice along with a piece of dialysis membrane were woven over and under the strings to fix them to the anchor rig, and mounted on an 8×8 MEA (inter-electrode distance=150µm)...
March 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28319880/the-importance-of-the-reproducibility-of-oropharyngeal-swallowing-in-amyotrophic-lateral-sclerosis-an-electrophysiological-study
#12
G Cosentino, E Alfonsi, L Mainardi, E Alvisi, F Brighina, F Valentino, B Fierro, G Sandrini, G Bertino, M Berlangieri, R De Icco, M Fresia, A Moglia
OBJECTIVE: To investigate electrophysiologically the reproducibility of oropharyngeal swallowing in patients with ALS. METHODS: We enrolled 26 ALS patients, both with and without clinical signs of dysphagia, and 30 age-matched controls. The reproducibility of the electrophysiological signals related to the oral phase (electromyographic activity of the submental/suprahyoid muscles) and the pharyngeal phase (laryngeal-pharyngeal mechanogram) of swallowing across repeated swallows was assessed...
February 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28319593/profiles-of-long-noncoding-rnas-in-hypertensive-rats-long-noncoding-rna-xr007793-regulates-cyclic-strain-induced-proliferation-and-migration-of-vascular-smooth-muscle-cells
#13
Qing-Ping Yao, Zhi-Wei Xie, Kai-Xuan Wang, Ping Zhang, Yue Han, Ying-Xin Qi, Zong-Lai Jiang
BACKGROUND: Long noncoding RNAs (lncRNAs) are being discovered in multiple diseases at a rapid pace. However, the contribution of lncRNAs to hypertension remains largely unknown. In hypertension, the vascular walls are exposed to abnormal mechanical cyclic strain, which leads to vascular remodelling. Here, we investigated the mechanobiological role of lncRNAs in hypertension. METHODS AND RESULTS: Differences in the lncRNAs and mRNAs between spontaneously hypertensive rats and Wistar-Kyoto rats were screened using a gene microarray...
March 17, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28319573/vascular-smooth-muscle-cell-maturation-stage-and-ki-67-index-are-diagnostic-biomarkers-for-pathologic-grade-of-ovarian-teratoma
#14
Masako Hongo-Kohama, Atsushi Kurata, Hirotsugu Hashimoto, Koji Fujita, Hajime Horiuchi, Toshitaka Nagao, Masahiko Kuroda
Although immature teratoma of the ovary is a rare disease, its pathologic grading, especially between low-grade (grade 1) and high-grade (grade 2 or 3) immature teratomas, is important for optimal therapy and prognosis. This grading, however, is currently solely dependent on quantitation of neuroepithelial components as judged by subjective assessments. As we have recently successfully studied the maturation of vascular smooth muscle cells (SMCs) in other organs using an h-caldesmon to α-smooth muscle actin (α-SMA) ratio, we decided to use this ratio to investigate a potential link between teratoma grade and SMC maturation, in combination with Ki-67 index...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28319171/a-reported-20-gene-expression-signature-to-predict-lymph-node-positive-disease-at-radical-cystectomy-for-muscle-invasive-bladder-cancer-is-clinically-not-applicable
#15
Kim E M van Kessel, Harmen J G van de Werken, Irene Lurkin, Angelique C J Ziel-van der Made, Ellen C Zwarthoff, Joost L Boormans
BACKGROUND: Neoadjuvant chemotherapy (NAC) for muscle-invasive bladder cancer (MIBC) provides a small but significant survival benefit. Nevertheless, controversies on applying NAC remain because the limited benefit must be weight against chemotherapy-related toxicity and the delay of definitive local treatment. Therefore, there is a clear clinical need for tools to guide treatment decisions on NAC in MIBC. Here, we aimed to validate a previously reported 20-gene expression signature that predicted lymph node-positive disease at radical cystectomy in clinically node-negative MIBC patients, which would be a justification for upfront chemotherapy...
2017: PloS One
https://www.readbyqxmd.com/read/28319142/microrna-32-promotes-calcification-in-vascular-smooth-muscle-cells-implications-as-a-novel-marker-for-coronary-artery-calcification
#16
Jianghua Liu, Xinhua Xiao, Yingying Shen, Ling Chen, Canxin Xu, Heng Zhao, Ying Wu, Qinghai Zhang, Jing Zhong, Zhenwang Tang, Changhui Liu, Qiang Zhao, Yi Zheng, Renxian Cao, Xuyu Zu
Cardiovascular calcification is one of the most severe outcomes associated with cardiovascular disease and often results in significant morbidity and mortality. Previous reports indicated that epigenomic regulation of microRNAs (miRNAs) might play important roles in vascular smooth muscle cell (VSMC) calcification. Here, we identified potential key miRNAs involved in vascular calcification in vivo and investigated the role of miR-32-5p (miR-32). According to microarray analysis, we observed increased expression of miR-125b, miR-30a, and miR-32 and decreased expression of miR-29a, miR-210, and miR-320 during the progression of vascularcalcification...
2017: PloS One
https://www.readbyqxmd.com/read/28319050/extracellular-matrix-proteomics-identifies-molecular-signature-of-symptomatic-carotid-plaques
#17
Sarah R Langley, Karin Willeit, Athanasios Didangelos, Ljubica Perisic Matic, Philipp Skroblin, Javier Barallobre-Barreiro, Mariette Lengquist, Gregor Rungger, Alexander Kapustin, Ludmilla Kedenko, Chris Molenaar, Ruifang Lu, Temo Barwari, Gonca Suna, Xiaoke Yin, Bernhard Iglseder, Bernhard Paulweber, Peter Willeit, Joseph Shalhoub, Gerard Pasterkamp, Alun H Davies, Claudia Monaco, Ulf Hedin, Catherine M Shanahan, Johann Willeit, Stefan Kiechl, Manuel Mayr
BACKGROUND: The identification of patients with high-risk atherosclerotic plaques prior to the manifestation of clinical events remains challenging. Recent findings question histology- and imaging-based definitions of the "vulnerable plaque," necessitating an improved approach for predicting onset of symptoms. METHODS: We performed a proteomics comparison of the vascular extracellular matrix and associated molecules in human carotid endarterectomy specimens from 6 symptomatic versus 6 asymptomatic patients to identify a protein signature for high-risk atherosclerotic plaques...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28318818/twitch-mouth-pressure-for-detecting-respiratory-muscle-weakness-in-suspicion-of-neuromuscular-disorder
#18
Dante Brasil Santos, Gilbert Desmarais, Line Falaize, Adam Ogna, Sandrine Cognet, Bruno Louis, David Orlikowski, Hélène Prigent, Frédéric Lofaso
Twitch mouth pressure using magnetic stimulation of the phrenic nerves and an automated inspiratory trigger is a noninvasive, non-volitional assessment of diaphragmatic strength. Our aims were to validate this method in patients with suspected neuromuscular disease, to determine the best inspiratory-trigger pressure threshold, and to evaluate whether twitch mouth pressure decreased the overdiagnosis of muscle weakness frequently observed with noninvasive volitional tests. Maximal inspiratory pressure, sniff nasal pressure, and twitch mouth pressure were measured in 112 patients with restrictive disease and suspected neuromuscular disorder...
February 2, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28318658/sudden-death-in-athletes
#19
Domenico Corrado, Alessandro Zorzi
Competitive sports activity is associated with an increased risk of sudden cardiovascular death (SCD) in adolescents and young adults with clinically silent cardiovascular disorders. While in middle-aged/senior athletes atherosclerotic coronary artery disease accounts for the vast majority of SCDs, in young athletes the spectrum of substrates is wider and includes inherited (cardiomyopathies) and congenital (anomalous origin of coronary arteries) structural heart diseases. Inherited ion channel diseases have been implicated in SCDs occurring with an apparently normal heart at autopsy...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28318624/treatment-tolerance-and-patient-reported-outcomes-favor-online-hemodiafiltration-compared-to-high-flux-hemodialysis-in-the-elderly
#20
Marion Morena, Audrey Jaussent, Lotfi Chalabi, Hélène Leray-Moragues, Leila Chenine, Alain Debure, Damien Thibaudin, Lynda Azzouz, Laure Patrier, Francois Maurice, Philippe Nicoud, Claude Durand, Bruno Seigneuric, Anne-Marie Dupuy, Marie-Christine Picot, Jean-Paul Cristol, Bernard Canaud
Large cohort studies suggest that high convective volumes associated with online hemodiafiltration may reduce the risk of mortality/morbidity compared to optimal high-flux hemodialysis. By contrast, intradialytic tolerance is not well studied. The aim of the FRENCHIE (French Convective versus Hemodialysis in Elderly) study was to compare high-flux hemodialysis and online hemodiafiltration in terms of intradialytic tolerance. In this prospective, open-label randomized controlled trial, 381 elderly chronic hemodialysis patients (over age 65) were randomly assigned in a one-to-one ratio to either high-flux hemodialysis or online hemodiafiltration...
March 15, 2017: Kidney International
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