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https://www.readbyqxmd.com/read/28432954/fully-automatic-left-ventricular-segmentation-from-long-axis-cardiac-cine-mr-scans
#1
Rahil Shahzad, Qian Tao, Oleh Dzyubachyk, Marius Staring, Boudewijn P F Lelieveldt, Rob J van der Geest
With an increasing number of large-scale population-based cardiac magnetic resonance (CMR) imaging studies being conducted nowadays, there comes the mammoth task of image annotation and image analysis. Such population-based studies would greatly benefit from automated pipelines, with an efficient CMR image analysis workflow. The purpose of this work is to investigate the feasibility of using a fully-automatic pipeline to segment the left ventricular endocardium and epicardium simultaneously on two orthogonal (vertical and horizontal) long-axis cardiac cine MRI scans...
April 13, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28426805/evidence-of-horizontal-gene-transfer-by-transposase-gene-analyses-in-fervidobacterium-species
#2
Alba Cuecas, Wirojne Kanoksilapatham, Juan M Gonzalez
Horizontal Gene Transfer (HGT) plays an important role in the physiology and evolution of microorganisms above all thermophilic prokaryotes. Some members of the Phylum Thermotogae (i.e., Thermotoga spp.) have been reported to present genomes constituted by a mosaic of genes from a variety of origins. This study presents a novel approach to search on the potential plasticity of Fervidobacterium genomes using putative transposase-encoding genes as the target of analysis. Transposases are key proteins involved in genomic DNA rearrangements...
2017: PloS One
https://www.readbyqxmd.com/read/28425174/costs-and-benefits-of-sub-lethal-drosophila-c-virus-infection
#3
Vanika Gupta, Charlotte Stewart, Samuel S C Rund, Katy Monteith, Pedro F Vale
Viruses are major evolutionary drivers of insect immune systems. Much of our knowledge of insect immune responses derives from experimental infections using the fruit fly Drosophila melanogaster. Most experiments, however, employ lethal pathogen doses through septic injury, frequently overwhelming host physiology. While this approach has revealed several immune mechanisms, it is less informative about the fitness costs hosts may experience during infection in the wild. Using both systemic and oral infection routes we find that even apparently benign, sub-lethal infections with the horizontally transmitted Drosophila C Virus (DCV) can cause significant physiological and behavioral morbidity that is relevant for host fitness...
April 20, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28417201/quantification-of-dynamic-posterior-translation-in-modified-bilateral-alexander-views-and-correlation-with-clinical-and-radiological-parameters-in-patients-with-acute-acromioclavicular-joint-instability
#4
Marvin Minkus, Carmen Hann, Markus Scheibel, Natascha Kraus
INTRODUCTION: Classification of AC-joint instability is based on radiologic evaluation of anteroposterior (a.p.) stress views of both shoulders, neglecting the horizontal component of instability. Recent studies have proposed an association of dynamic posterior translation (DPT) and inferior clinical results. The purpose of this study was to quantify DPT in modified Alexander views and correlate it with other radiological and clinical data. MATERIALS AND METHODS: Thirty-two patients (4 f, 28 m, mean age 34...
April 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28409726/the-suboccipital-ligament
#5
Kelsey Alabaster, M Fred Bugg, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE A fibrous structure located dorsal to the dura at the posterior craniocervical junction stretches horizontally between the bilateral occipital condyles and the upper borders of the C-1 laminae. Partially covered by the occipital bone, this structure is always encountered when the bone is removed from the foramen magnum rim during approaches to the posterior cranial fossa. Although known to surgeons, this structure has not been defined, studied, or named. The most appropriate name for this structure is "the suboccipital ligament," and a detailed rationale for this name is provided...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28405268/revisiting-the-phylogeny-of-wolbachia-in-collembola
#6
Yao Ma, Wan-Jun Chen, Zhao-Hui Li, Feng Zhang, Yan Gao, Yun-Xia Luan
The endosymbiont Wolbachia has been detected in a few parthenogenetic collembolans sampled in Europe and America, including three species of Poduromorpha, two species of Entomobryomorpha, and two species of Neelipleona. Based on 16S rRNA and ftsZ gene sequences, most of the Wolbachia infecting parthenogenetic collembolans were characterized as members of supergroup E and showed concordant phylogeny with their hosts. However, the two neelipleonan symbionts form another unique group, indicating that Wolbachia has infected parthenogenetic collembolans multiple times...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28403303/the-game-as-strategy-for-approach-to-sexuality-with-adolescents-theoretical-methodological-re%C3%AF-ections
#7
Vânia de Souza, Maria Flávia Gazzinelli, Amanda Nathale Soares, Marconi Moura Fernandes, Rebeca Nunes Guedes de Oliveira, Rosa Maria Godoy Serpa da Fonseca
OBJECTIVE: To describe the Papo Reto [Straight Talk] game and reflect on its theoretical-methodological basis. METHOD: Analytical study on the process of elaboration of the Papo Reto online game, destined to adolescents aged 15-18 years, with access to the Game between 2014 and 2015. RESULTS: the interactions of 60 adolescents from Belo Horizonte and São Paulo constituted examples of the potentialities of the Game to favor the approach to sexuality with adolescents through simulation of reality, invention and interaction...
April 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28402354/simultaneous-ridge-augmentation-and-accelerated-molar-uprighting-for-implant-site-development-two-case-reports-with-a-split-mouth-design
#8
Chin-Wei Wang, Michelle Yuching Chou, Rebecca Chen, Todd Rowe, Mohamed Masoud, David M Kim, Giuseppe Intini
Well-coordinated interdisciplinary dental treatments provide the best esthetic, functional, and long-term results for patients. However, the length of such treatment, which may involve orthodontics, ridge augmentation, and dental implants, often deters patients from pursuing them. The two case reports presented here aim to present the advantage of simultaneous orthodontic molar uprighting and ridge augmentation procedures for future implant site development. Selective decortication of the alveolar bone, performed simultaneously with bone grafting, can accelerate the tooth uprighting process and synergistically reduce treatment duration...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28402346/tissue-engineering-therapy-for-atrophic-maxilla-using-minimally-manipulated-cd90-and-cd105-bone-marrow-stem-cells-a-case-report
#9
Erick Valdivia, Gerardo Mendoza-Azpur, Jhon Pando, Heydi Cornejo, Antonio Carrasco, Myron Nevins, David Kim
Bone deficiencies in the jaws of edentulous patients limit the possibility of successful placement and osseointegration of endosseous implants. Bone resorption is defined as a vertical and horizontal loss of quality and quantity in the residual bone ridges; lack of bone structure requires bone grafting procedures to enable implant placement and to improve the function, predictability, and longevity of implants. The objective of this case study was to demonstrate the feasibility of a novel cell therapy treatment for localized jaw bone defects with tissue repair cells composed of a mixture of bone marrow-derived cells, including CD90+ mesenchymal stem cells and CD105+ monocytes/macrophages, and xenograft blocks, in what would be a safe and efficacious approach to the regeneration of localized craniofacial bone defects...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28399565/conducting-privacy-preserving-multivariable-propensity-score-analysis-when-patient-covariate-information-is-stored-in-separate-locations
#10
Justin Bohn, Wesley Eddings, Sebastian Schneeweiss
Distributed networks of health-care data sources are increasingly being utilized to conduct pharmacoepidemiologic database studies. Such networks may contain data that are not physically pooled but instead are distributed horizontally (separate patients within each data source) or vertically (separate measures within each data source) in order to preserve patient privacy. While multivariable methods for the analysis of horizontally distributed data are frequently employed, few practical approaches have been put forth to deal with vertically distributed health-care databases...
March 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28393825/a-contemporary-approach-for-treatment-planning-of-horizontally-resorbed-alveolar-ridge-ridge-split-technique-with-simultaneous-implant-placement-using-platelet-rich-fibrin-membrane-application-in-mandibular-anterior-region
#11
Prathahini S Parthiban, R Vijaya Lakshmi, Jaideep Mahendra, K Sreekumar, Ambalavanan Namasivayam
Treatment of edentulous sites with horizontal atrophy represents a clinical situation in which the positioning of endosseous implants might be complex or sometimes impossible without a staged regenerative approach. This case report presents management of horizontally deficient mandibular anterior ridge with a contemporary approach to treatment planning and application of platelet-rich fibrin membrane for ridge split technique and simultaneous implant placement. Implants in anterior mandibular area are considered to be most predictable, stable, with high success rate and patients' satisfaction with implant esthetics...
January 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28392565/next-generation-approaches-to-understand-and-combat-the-antibiotic-resistome
#12
REVIEW
Terence S Crofts, Andrew J Gasparrini, Gautam Dantas
Antibiotic resistance is a natural feature of diverse microbial ecosystems. Although recent studies of the antibiotic resistome have highlighted barriers to the horizontal transfer of antibiotic resistance genes between habitats, the rapid global spread of genes that confer resistance to carbapenem, colistin and quinolone antibiotics illustrates the dire clinical and societal consequences of such events. Over time, the study of antibiotic resistance has grown from focusing on single pathogenic organisms in axenic culture to studying antibiotic resistance in pathogenic, commensal and environmental bacteria at the level of microbial communities...
April 10, 2017: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/28392452/mars-a-protein-family-involved-in-the-formation-of-vertical-skeletal-elements
#13
Shai Abehsera, Shani Peles, Jenny Tynyakov, Shmuel Bentov, Eliahu D Aflalo, Shihao Li, Fuhua Li, Jianhai Xiang, Amir Sagi
Vertical organizations of skeletal elements are found in various vertebrate teeth and invertebrate exoskeletons. The molecular mechanism behind the development of such structural organizations is poorly known, although it is generally held that organic matrix proteins play an essential role. While most crustacean cuticular organizations exhibit horizontal chitinous layering, a typical vertical organization is found towards the surface of the teeth in the mandibles of the crayfish Cheraxquadricarinatus. Candidate genes encoding for mandible-forming structural proteins were mined in C...
April 6, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28390108/deciphering-conjugative-plasmid-permissiveness-dynamics-in-wastewater-microbiomes
#14
Samuel Jacquiod, Asker Brejnrod, Stefan M Morberg, Waleed Abu Al-Soud, Søren J Sørensen, Leise Riber
Wastewater treatment plants (WWTPs) are designed to robustly treat polluted water. They are characterized by ceaseless flows of organic, chemical and microbial matter, followed by treatment steps before environmental release. WWTPs are hotspots of horizontal gene transfer (HGT) between bacteria via conjugative plasmids, leading to dissemination of potentially hazardous genetic material such as antimicrobial resistance genes (AMRGs). While current focus is on the threat of AMRGs spreading and environmental maintenance, conjugative plasmid transfer dynamics within and between bacterial communities still remains largely uncharted...
April 8, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28386769/relative-abundance-and-strain-diversity-in-the-bacterial-endosymbiont-community-of-a-sap-feeding-insect-across-its-native-and-introduced-geographic-range
#15
Caroline Fromont, Markus Riegler, James M Cook
Most insects are associated with bacterial symbionts. The bacterial diversity and community composition within hosts may play an important role in shaping insect population biology, ecology and evolution. We focussed on the bacterial microbiome of the Australian fig homotomid Mycopsylla fici (Hemiptera: Psylloidea), which can cause defoliation of its only host tree, Ficus macrophylla. This sap-feeding insect is native to mainland Australia and Lord Howe Island (LHI) but also occurs where its host has been planted, notably in New Zealand...
April 6, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28386422/horizontal-and-vertical-movements-of-caribbean-reef-sharks-carcharhinus-perezi-conservation-implications-of-limited-migration-in-a-marine-sanctuary
#16
Oliver N Shipley, Lucy A Howey, Emily R Tolentino, Lance K B Jordan, Jonathan L W Ruppert, Edward J Brooks
Despite the ecological and economic importance of the Caribbean reef shark (Carcharhinus perezi), little data exist regarding the movements and habitat use of this predator across its range. We deployed 11 pop-up satellite archival tags on Caribbean reef sharks captured in the northeast Exuma Sound, The Bahamas, to assess their horizontal and vertical movements throughout the water column. Sharks showed high site fidelity to The Bahamas suggesting Bahamian subpopulations remain protected within the Bahamian Shark Sanctuary...
February 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28383665/a-pan-genomic-approach-to-understand-the-basis-of-host-adaptation-in-achromobacter
#17
J Jeukens, L Freschi, A T Vincent, J G Emond-Rheault, I Kukavica-Ibrulj, S J Charette, R C Levesque
Over the past decade, there has been a rising interest in Achromobacter sp., an emerging opportunistic pathogen responsible for nosocomial and cystic fibrosis (CF) lung infections. Species of this genus are ubiquitous in the environment, can outcompete resident microbiota, and are resistant to commonly used disinfectants as well as antibiotics. Nevertheless, the Achromobacter genus suffers from difficulties in diagnosis, unresolved taxonomy and limited understanding of how it adapts to the CF lung, not to mention other host environments...
April 5, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28383117/an-alternative-prosthetic-approach-for-rehabilitation-of-two-edentulous-maxillectomy-patients-clinical-report
#18
Murat Yenisey, Şafak Külünk, Necati Kaleli
Obturator prosthesis is a common treatment method for maxillectomy patients for maintaining their oronasal separation and resuming their social lives. After tumor resection, the remaining anatomical structures have a significant effect on prosthesis retention. The present study describes the rehabilitation of two maxillectomy patients after cancer surgery using a prosthesis consisting of a denture and a special retentive obturator that is positioned in the anatomical undercuts of the nasal cavity. These patients have undergone total and subtotal maxillectomy surgery after the diagnosis of squamous cell carcinoma...
April 6, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28381998/real-time-biologically-inspired-action-recognition-from-key-poses-using-a-neuromorphic-architecture
#19
Georg Layher, Tobias Brosch, Heiko Neumann
Intelligent agents, such as robots, have to serve a multitude of autonomous functions. Examples are, e.g., collision avoidance, navigation and route planning, active sensing of its environment, or the interaction and non-verbal communication with people in the extended reach space. Here, we focus on the recognition of the action of a human agent based on a biologically inspired visual architecture of analyzing articulated movements. The proposed processing architecture builds upon coarsely segregated streams of sensory processing along different pathways which separately process form and motion information (Layher et al...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28377756/predictive-modeling-of-a-batch-filter-mating-process
#20
Akshay Malwade, Angel Nguyen, Peivand Sadat-Mousavi, Brian P Ingalls
Quantitative characterizations of horizontal gene transfer are needed to accurately describe gene transfer processes in natural and engineered systems. A number of approaches to the quantitative description of plasmid conjugation have appeared in the literature. In this study, we seek to extend that work, motivated by the question of whether a mathematical model can accurately predict growth and conjugation dynamics in a batch process. We used flow cytometry to make time-point observations of a filter-associated mating between two E...
2017: Frontiers in Microbiology
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