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https://www.readbyqxmd.com/read/29143190/role-of-magnetic-resonance-imaging-in-the-management-of-perianal-crohn-s-disease
#1
REVIEW
Jose C Gallego, Ana Echarri
Perianal fistulas are a major problem in many patients with Crohn's disease. These are usually complex fistulas that adversely affect patients' quality of life, and their clinical management is difficult. Medical treatment sometimes achieves cessation of discharge and closure of the external opening; however, it is difficult to assess the status of the rest of the fistula tract. Magnetic resonance imaging is the method of choice with which to evaluate the condition of perianal fistulas and allows for assessment of the status of inaccessible areas...
November 15, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/29141638/diffusion-weighted-imaging-of-the-brains-of-dogs-with-idiopathic-epilepsy
#2
Antje Hartmann, Steffen Sager, Klaus Failing, Marion Sparenberg, Martin J Schmidt
BACKGROUND: Idiopathic epilepsy is one of the most common neurological disorders in dogs. Unfortunately, up to 30% of dogs with idiopathic epilepsy show no improvement under antiepileptic drug treatment. Diffusion-weighted imaging is used in human medicine to identify epileptogenic foci in the brain to allow for more invasive treatments such as deep brain stimulation or surgical removal. The aim of this study was to ass the feasibility of interictal diffusion-weighted MRI in dogs and to evaluate the distribution of diffusion in the brains of dogs with idiopathic epilepsy (IE) and to compare these values to previously published values from healthy beagle dogs...
November 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29141631/detection-of-rabbit-haemorrhagic-disease-virus-2-during-the-wild-rabbit-oryctolagus-cuniculus-eradication-from-the-berlengas-archipelago-portugal
#3
F A Abade Dos Santos, C Carvalho, Oliveira Nuno, J J Correia, M Henriques, M C Peleteiro, M Fevereiro, M D Duarte
BACKGROUND: In the regular wildlife monitoring action carried out in the summer of the past few years at the Berlenga Island, wild rabbits (Oryctolagus cuniculus) have been repeatedly found dead. However, the origin of those deaths was never investigated. Our aim was to investigate the cause of death of 11 rabbits collected between April and May 2016. RESULTS: While screening samples from rabbit carcasses for the major viral rabbit pathogens, five tested positive to RHDV2 but all were negative for RHDV and myxoma virus (MYXV)...
November 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29141314/-a-novel-compound-heterozygous-mutation-in-abca3-gene-in-a-child-with-diffuse-parenchymal-lung-disease
#4
Y M Bao, X L Liu, X L Liu, J H Chen, Y J Zheng
Objective: To summarize the clinical characteristics of the diffuse parenchymal lung diseases in a child caused by a novel compound heterozygous ABCA3 mutation and explore the association between the phenotype and ABCA3 mutation. Method: The clinical material of a patient diagnosed with diffuse parenchymal lung disease with ABCA3 mutation in December 2016 in Shenzhen Children's Hospital was analyzed. The information about ABCA3 gene mutation updated before April, 2017 was searched and collected from the gene databases (including 1000Genomes, HGMD, EXAC) and the literatures (including Wanfang Chinese database and Pubmed)...
November 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29140606/mr-textural-analysis-on-t2-flair-images-for-the-prediction-of-true-oligodendroglioma-by-the-2016-who-genetic-classification
#5
Wenting Rui, Yan Ren, Yin Wang, Xinyi Gao, Xiao Xu, Zhenwei Yao
BACKGROUND: The genetic status of 1p/19q is important for differentiating oligodendroglioma, isocitrate-dehydrogenase (IDH)-mutant, and 1p/19q-codeleted from diffuse astrocytoma, IDH-mutant according to the 2016 World Health Organization (WHO) criteria. PURPOSE: To assess the value of magnetic resonance textural analysis (MRTA) on T2 fluid-attenuated inversion recovery (FLAIR) images for making a genetically integrated diagnosis of true oligodendroglioma by WHO guidelines...
November 15, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29138483/macroscale-multimodal-imaging-reveals-ancient-painting-production-technology-and-the-vogue-in-greco-roman-egypt
#6
John K Delaney, Kathryn A Dooley, Roxanne Radpour, Ioanna Kakoulli
Macroscale multimodal chemical imaging combining hyperspectral diffuse reflectance (400-2500 nm), luminescence (400-1000 nm), and X-ray fluorescence (XRF, 2 to 25 keV) data, is uniquely equipped for noninvasive characterization of heterogeneous complex systems such as paintings. Here we present the first application of multimodal chemical imaging to analyze the production technology of an 1,800-year-old painting and one of the oldest surviving encaustic ("burned in") paintings in the world. Co-registration of the data cubes from these three hyperspectral imaging modalities enabled the comparison of reflectance, luminescence, and XRF spectra at each pixel in the image for the entire painting...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29137487/emergence-of-fosfomycin-resistance-among-isolates-of-escherichia-coli-harboring-extended-spectrum-and-ampc-%C3%AE-lactamases
#7
Aghil Bahramian, Gita Eslami, Ali Hashemi, Ali Tabibi, Mohsen Heidary
Urinary tract infection (UTI) is a common type of infectious disease globally. The aim of this study was to detect the frequency of fosA3 and fosC2 genes in extended-spectrum β-lactamases (ESBL) and blaDHA, blaCMY-2, and blaCMY-42 genes in AmpC β-lactamases-producing isolates of Escherichia coli. In total, 120 isolates of E. coli were collected from three teaching hospitals between March 2014 and February 2015. Antibiotic susceptibility tests were carried out by disk diffusion method. The presence of blaCMY-2, blaCMY-42, blaDHA, fosA3, and fosC2 genes was detected by polymerase chain reaction (PCR) and sequencing...
November 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29136686/-clinicopathologic-and-molecular-characteristics-of-malignant-gastrointestinal-neuroectodermal-tumors
#8
M Zhao, T W Zhao, J Ma, C Y Wu, L Chen, G Q Ru, X L He
Objective: To investigate the clinicopathologic and molecular characteristics, diagnostic, differential diagnostic and prognostic features of malignant gastrointestinal neuroectodermal tumor. Methods: Two cases of malignant gastrointestinal neuroectodermal tumor were retrieved; the clinical and radiologic features, histomorphology, immunophenotype, molecular genetics and prognosis were analyzed and the relevant literature reviewed. Results: Case 1 was a 57-year-old male, presented with recurrent abdominal pain and melena...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29134353/scan-time-reduction-in-diffusion-weighted-imaging-of-the-pancreas-using-a-simultaneous-multislice-technique-with-different-acceleration-factors-how-fast-can-we-go
#9
Jana Taron, Petros Martirosian, Thomas Kuestner, Nina F Schwenzer, Ahmed Othman, Jakob Weiß, Mike Notohamiprodjo, Konstantin Nikolaou, Christina Schraml
OBJECTIVES: To investigate the feasibility of simultaneous multislice-accelerated diffusion-weighted imaging (sms-DWI) of the pancreas with different acceleration factors and its influence on image quality, acquisition time and apparent diffusion coefficients (ADCs) in comparison to conventional sequences. METHODS: DWI of the pancreas was performed at 1.5T in ten healthy volunteers and 20 patients with sms-accelerated echo-planar DWI using two different sms-acceleration factors of 2 and 3 (sms2/3-DWI)...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29134349/the-impact-of-mri-sequence-on-tumour-staging-and-gross-tumour-volume-delineation-in-squamous-cell-carcinoma-of-the-anal-canal
#10
Davide Prezzi, Ramin Mandegaran, Sofia Gourtsoyianni, Katarzyna Owczarczyk, Andrew Gaya, Robert Glynne-Jones, Vicky Goh
OBJECTIVES: To compare maximum tumour diameter (MTD) and gross tumour volume (GTV) measurements between T2-weighted (T2-w) and diffusion-weighted (DWI) MRI in squamous cell carcinoma of the anal canal (SCCA) and assess sequence impact on tumour (T) staging. Second, to evaluate interobserver agreement and reader delineation confidence. METHODS: The staging MRI scans of 45 SCCA patients (25 females) were assessed retrospectively by two independent radiologists (0 and 5 years' experience of anal cancer MRI)...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29134248/the-ancient-claudin-dni2-facilitates-yeast-cell-fusion-by-compartmentalizing-dni1-into-a-membrane-subdomain
#11
M-Ángeles Curto, Sandra Moro, Francisco Yanguas, Carmen Gutiérrez-González, M-Henar Valdivieso
Dni1 and Dni2 facilitate cell fusion during mating. Here, we show that these proteins are interdependent for their localization in a plasma membrane subdomain, which we have termed the mating fusion domain. Dni1 compartmentation in the domain is required for cell fusion. The contribution of actin, sterol-dependent membrane organization, and Dni2 to this compartmentation was analysed, and the results showed that Dni2 plays the most relevant role in the process. In turn, the Dni2 exit from the endoplasmic reticulum depends on Dni1...
November 13, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29131834/plasma-microrna-profiling-exploring-better-biomarkers-for-lymphoma-surveillance
#12
Drirh Khare, Neta Goldschmidt, Aya Bardugo, Devorah Gur-Wahnon, Iddo Z Ben-Dov, Batia Avni
Early detection of relapsed lymphoma improves response and survival. Current tools lack power for detection of early relapse, while being cumbersome and expensive. We searched for sensitive biomarkers that precede clinical relapse, and serve for further studies on therapy response and relapse. We recruited 20 healthy adults, 14 diffuse large B-cell lymphoma (DLBCL) patients and 11 Hodgkin lymphoma (HL) patients at diagnosis. Using small-RNA sequencing we identified in DLBCL patients increased plasma levels of miR-124 and miR-532-5p, and decreased levels of miR-425, miR-141, miR-145, miR-197, miR-345, miR-424, miR-128 and miR-122...
2017: PloS One
https://www.readbyqxmd.com/read/29131444/native-t1-reference-values-for-nonischemic-cardiomyopathies-and-populations-with-increased-cardiovascular-risk-a-systematic-review-and-meta-analysis
#13
REVIEW
Maaike van den Boomen, Riemer H J A Slart, Enzo V Hulleman, Rudi A J O Dierckx, Birgitta K Velthuis, Pim van der Harst, David E Sosnovik, Ronald J H Borra, Niek H J Prakken
BACKGROUND: Although cardiac MR and T1 mapping are increasingly used to diagnose diffuse fibrosis based cardiac diseases, studies reporting T1 values in healthy and diseased myocardium, particular in nonischemic cardiomyopathies (NICM) and populations with increased cardiovascular risk, seem contradictory. PURPOSE: To determine the range of native myocardial T1 value ranges in patients with NICM and populations with increased cardiovascular risk. STUDY TYPE: Systemic review and meta-analysis...
November 13, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29130096/structuring-polymer-gels-via-catalytic-reactions
#14
Virginie Hugouvieux, Walter Kob
We use computer simulations to investigate how a catalytic reaction in a polymer sol can induce the formation of a polymer gel. To this aim we consider a solution of homopolymers in which freely-diffusing catalysts convert the originally repulsive A monomers into attractive B ones. We find that at low temperatures this reaction transforms the polymer solution into a physical gel that has a remarkably regular mesostructure in the form of a cluster phase, absent in the usual homopolymer gels obtained by a quench in temperature...
November 13, 2017: Soft Matter
https://www.readbyqxmd.com/read/29129844/spatial-restriction-within-intracranial-epidermoid-cysts-observed-using-short-diffusion-time-diffusion-weighted-imaging
#15
Christina Andica, Masaaki Hori, Kouhei Kamiya, Saori Koshino, Akifumi Hagiwara, Koji Kamagata, Issei Fukunaga, Nozomi Hamasaki, Michimasa Suzuki, Thorsten Feiweier, Katsutoshi Murata, Atsushi Arakawa, Kondo Akihide, Osamu Akiyama, Shigeki Aoki
We report two cases of pathologically proven intracranial epidermoid cysts. Both cases were scanned with diffusion-weighted imaging using pulsed gradient spin-echo (PGSE) and oscillating gradient spin-echo (OGSE; 50 Hz) prototype sequences with diffusion times of 47.3 ms and 8.5 ms, respectively. The apparent diffusion coefficient measured by OGSE was higher than that measured by PGSE, indicating the spatial restriction of water diffusion in the laminated keratin layers within the cyst as demonstrated by histopathology...
November 13, 2017: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29128724/fabrication-and-characterization-of-novel-iodine-doped-hollow-and-mesoporous-hematite-fe2o3-particles-derived-from-sol-gel-method-and-their-photocatalytic-performances
#16
Selim Demirci, Metin Yurddaskal, Tuncay Dikici, Cevat Sarıoğlu
In this work, iodine (I) doped hollow and mesoporous Fe2O3 photocatalyst particles were fabricated for the first time through sol-gel method. Phase structure, surface morphology, particle size, specific surface area and optical band gap of the synthesized Fe2O3 photocatalysts were analyzed by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), X-ray photoelectron spectroscopy (XPS), BET surface analysis, particle size analyzer and UV-vis diffuse reflectance spectrum (UV-vis DRS), respectively...
November 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29128636/identification-of-key-micrornas-associated-with-diffuse-large-b-cell-lymphoma-by-analyzing-serum-microrna-expressions
#17
Yuanyuan Meng, Lina Quan, Aichun Liu
PURPOSE: This study aimed to investigate the molecular mechanism underlying diffuse large B-cell lymphoma (DLBCL). METHODS: Serum miRNA expression analysis for the serum samples of patients with DLBCL and those of controls was performed using the Illumina sequencing technology. Differentially expressed miRNAs (DEMs) were identified on the basis of the sequencing data. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses and protein-protein interaction (PPI) network construction for the target genes of DEMs were also conducted...
November 8, 2017: Gene
https://www.readbyqxmd.com/read/29127628/immunohistochemistry-with-anti-braf-v600e-ve1-mouse-monoclonal-antibody-is-a-sensitive-method-for-detection-of-the-braf-v600e-mutation-in-colon-cancer-evaluation-of-120-cases-with-and-without-kras-mutation-and-literature-review
#18
Katerina Dvorak, Amanda Higgins, John Palting, Michael Cohen, Patrick Brunhoeber
The major aim of this study was to evaluate the performance of anti-BRAF V600E (VE1) antibody in colorectal tumors with and without KRAS mutation. KRAS and BRAF are two major oncogenic drivers of colorectal cancer (CRC) that have been frequently described as mutually exclusive, thus the BRAF V600E mutation is not expected to be present in the cases with KRAS mutation. In addition, a review of 25 studies comparing immunohistochemistry (IHC) using the anti-BRAF V600E (VE1) antibody with BRAF V600E molecular testing in 4041 patient samples was included...
November 10, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29127285/real-space-and-real-time-dynamics-of-crispr-cas9-visualized-by-high-speed-atomic-force-microscopy
#19
Mikihiro Shibata, Hiroshi Nishimasu, Noriyuki Kodera, Seiichi Hirano, Toshio Ando, Takayuki Uchihashi, Osamu Nureki
The CRISPR-associated endonuclease Cas9 binds to a guide RNA and cleaves double-stranded DNA with a sequence complementary to the RNA guide. The Cas9-RNA system has been harnessed for numerous applications, such as genome editing. Here we use high-speed atomic force microscopy (HS-AFM) to visualize the real-space and real-time dynamics of CRISPR-Cas9 in action. HS-AFM movies indicate that, whereas apo-Cas9 adopts unexpected flexible conformations, Cas9-RNA forms a stable bilobed structure and interrogates target sites on the DNA by three-dimensional diffusion...
November 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/29126780/identification-of-protein-w-the-elusive-sixth-subunit-of-the-rhodopseudomonas-palustris-reaction-center-light-harvesting-1-core-complex
#20
Philip J Jackson, Andrew Hitchcock, David J K Swainsbury, Pu Qian, Elizabeth C Martin, David A Farmer, Mark J Dickman, Daniel P Canniffe, C Neil Hunter
The X-ray crystal structure of the Rhodopseudomonas (Rps.) palustris reaction center-light harvesting 1 (RC-LH1) core complex revealed the presence of a sixth protein component, variably referred to in the literature as helix W, subunit W or protein W. The position of this protein prevents closure of the LH1 ring, possibly to allow diffusion of ubiquinone/ubiquinol between the RC and the cytochrome bc1 complex in analogous fashion to the well-studied PufX protein from Rhodobacter sphaeroides. The identity and function of helix W have remained unknown for over 13 years; here we use a combination of biochemistry, mass spectrometry, molecular genetics and electron microscopy to identify this protein as RPA4402 in Rps...
November 7, 2017: Biochimica et Biophysica Acta
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