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https://www.readbyqxmd.com/read/28445373/auricular-reconstruction-in-hemifacial-microsomia-with-an-expanded-two-flap-method
#1
Jin Qian, Zhibin Li, Tun Liu, Xu Zhou, Qingguo Zhang
BACKGROUND: Reconstruction of external ear is important for the child/adult with craniofacial deformities to achieve balance and harmony of the face and head. The aim of this study was to investigate the clinical application of an expanded two-flap method for auricular reconstruction in hemifacial microsomia. METHODS: Between January of 2014 and November of 2015, 111 hemifacial microsomia patients with microtia underwent auricular reconstruction with an expanded two-flap method...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28444369/three-dimensional-intracellular-structure-of-a-whole-rice-mesophyll-cell-observed-with-fib-sem
#2
Takao Oi, Sakiko Enomoto, Tomoyo Nakao, Shigeo Arai, Koji Yamane, Mitsutaka Taniguchi
Background and Aims: Ultrathin sections of rice leaf blades observed two-dimensionally using a transmission electron microscope (TEM) show that the chlorenchyma is composed of lobed mesophyll cells, with intricate cell boundaries, and lined with chloroplasts. The lobed cell shape and chloroplast positioning are believed to enhance the area available for the gas exchange surface for photosynthesis in rice leaves. However, a cell image revealing the three-dimensional (3-D) ultrastructure of rice mesophyll cells has not been visualized...
April 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28430105/switching-of-metabolic-programs-in-response-to-light-availability-is-an-essential-function-of-the-cyanobacterial-circadian-output-pathway
#3
Anna M Puszynska, Erin K O'Shea
The transcription factor RpaA is the master regulator of circadian transcription in cyanobacteria, driving genome-wide oscillations in mRNA abundance. Deletion of rpaA has no effect on viability in constant light conditions, but renders cells inviable in cycling conditions when light and dark periods alternate. We investigated the mechanisms underlying this viability defect, and demonstrate that the rpaA(-) strain cannot maintain appropriate energy status at night, does not accumulate carbon reserves during the day, and is defective in transcription of genes crucial for utilization of carbohydrate stores at night...
April 21, 2017: ELife
https://www.readbyqxmd.com/read/28422434/rat-hindlimb-cryopreservation-and-transplantation-a-step-towards-organ-banking
#4
Amir Arav, Or Friedman, Yehudit Natan, Eyal Gur, Nir Shani
In 2016 over 5 million reconstructive procedures were performed in the USA. The recent successes of clinical vascularized composite allotransplantations (VCA), hand and face transplantations included, established the tremendous potential of these life-enhancing reconstructions. Nevertheless, Due to limited availability and lifelong immunosuppression, application is limited. Long term banking of composite transplants may increase the availability of esthetically compatible parts with partial or complete HLA matching, reducing the risk of rejection and the immunosuppressive burden...
April 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28422140/the-evolutionary-history-of-bears-is-characterized-by-gene-flow-across-species
#5
Vikas Kumar, Fritjof Lammers, Tobias Bidon, Markus Pfenninger, Lydia Kolter, Maria A Nilsson, Axel Janke
Bears are iconic mammals with a complex evolutionary history. Natural bear hybrids and studies of few nuclear genes indicate that gene flow among bears may be more common than expected and not limited to polar and brown bears. Here we present a genome analysis of the bear family with representatives of all living species. Phylogenomic analyses of 869 mega base pairs divided into 18,621 genome fragments yielded a well-resolved coalescent species tree despite signals for extensive gene flow across species. However, genome analyses using different statistical methods show that gene flow is not limited to closely related species pairs...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417054/three-dimensional-and-topographic-relationships-between-the-orbital-margins-with-reference-to-assessment-of-eyeball-protrusion
#6
Kang-Jae Shin, Shin-Hyo Lee, Ki-Seok Koh, Wu-Chul Song
This study investigated the topographic relationships among the eyeball and four orbital margins with the aim of identifying the correlation between orbital geometry and eyeball protrusion in Koreans. Three-dimensional (3D) volume rendering of the face was performed using serial computed-tomography images of 141 Koreans, and several landmarks on the bony orbit and the cornea were directly marked on the 3D volumes. The anterior-posterior distances from the apex of the cornea to each orbital margin and between the orbital margins were measured in both eyes...
March 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28415992/women-epidemiology-lung-cancer-welca-study-reproductive-hormonal-occupational-risk-factors-and-biobank
#7
Isabelle Stücker, Diane Martin, Monica Neri, Pierre Laurent-Puig, Hélène Blons, Martine Antoine, Anne Guiochon-Mantel, Sylvie Brailly-Tabard, Marianne Canonico, Marie Wislez, Jean Trédaniel
BACKGROUND: Lung cancer aetiology and clinical aspects have been mainly studied in men, although specific risk factors probably exist in women. Here we present the rationale, design and organization of the WELCA study (Women Epidemiology Lung CAncer) that has been launched to investigate lung cancer in women, focusing particularly on hormonal and occupational factors. METHODS/DESIGN: WELCA is a population based case-control study and planned to recruit 1000 cases and 1000 controls in three years, based on study power calculation...
April 17, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28414805/measurements-of-the-parapapillary-atrophy-zones-in-en-face-optical-coherence-tomography-images
#8
Atsuya Miki, Yasushi Ikuno, Robert N Weinreb, Junko Yokoyama, Tomoko Asai, Shinichi Usui, Kohji Nishida
OBJECTIVE: To measure the parapapillary atrophy (PPA) area in en face images obtained with swept-source optical coherence tomography (SS-OCT), and to evaluate its relationship to glaucoma, myopia, and age in non-highly myopic subjects. DESIGN: Retrospective, cross-sectional study. PARTICIPANTS: Fifty eyes of 30 subjects with open-angle glaucoma (G group) and forty-three eyes of 26 healthy control subjects (C group). Eyes with high myopia (spherical equivalent refractive error ≤ -8 diopters or axial length ≥ 26...
2017: PloS One
https://www.readbyqxmd.com/read/28409229/sphenoid-dysplasia-in-neurofibromatosis-type-1-a-new-technique-for-repair
#9
Di Rocco Concezio, Samii Amir, Tamburrini Gianpiero, Massimi Luca, Giordano Mario
PURPOSE: Sphenoid bone dysplasia in neurofibromatosis type 1 is characterized by progressive exophthalmos and facial disfiguration secondary to herniation of meningeal and cerebral structures. We describe a technique for reconstruction of the sphenoid defect apt at preventing or correcting the ocular globe dislocation. METHODS: After placement of spinal cerebrospinal fluid drainage to reduce intracranial pressure, the temporal pole is posteriorly dislocated extradurally...
April 13, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28399153/disinhibition-of-negative-true-self-for-identity-reconstructions-in-cyberspace-advancing-self-discrepancy-theory-for-virtual-setting
#10
Chuan Hu, Sameer Kumar, Jiao Huang, Kurunathan Ratnavelu
In face-to-face communications, to avoid sanctions and disapproval from others, people are more likely to hide negative aspects of their true self (such as socially undesirable personalities, minds, beliefs and consciousness) to avoid conflict with social norms and laws. The anonymity of cyberspace provides people a unique environment to behave more freely and openly with less restraint from the real word. Existing research related to online true self expression has mainly explored true self as an independent aspect of self...
2017: PloS One
https://www.readbyqxmd.com/read/28397149/considering-3d-topography-of-endothelial-folds-to-improve-cell-count-of-organ-cultured-corneas
#11
Clotilde Jumelle, Thibaud Garcin, Anne Sophie Gauthier, Yaël Glasson, Aurélien Bernard, Yann Gavet, Jacques Klossa, Zhiguo He, Sophie Acquart, Philippe Gain, Gilles Thuret
The posterior side of the cornea is covered by the endothelial monolayer, which governs corneal transparency but cannot proliferate. Determination of endothelial cell density (ECD) is therefore the minimal and mandatory quality control in all eye banks. It avoids primary graft failures caused by endothelial insufficiency, and allows allocation of corneas to surgical techniques requiring different numbers of endothelial cells (ECs). Corneas stored in organ culture (17% of grafts worldwide), are characterized by heavy stromal swelling and numerous deep endothelial folds, up to 200 µm high...
April 10, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28396084/impaction-grafting-made-easy
#12
Stephen A Jones
BACKGROUND: Impaction bone grafting is an established reconstruction technique to address bone loss in revision total hip arthroplasty. Intuitively, it would seem to be a very attractive method as "missing bone is replaced with bone." The potential restoration of bone stock is of particular value in the younger patient who may be facing future revision procedures. METHODS AND RESULTS: Although undoubtedly some units have published good results with this method, more recent long-term data have revealed some of the limitations of this reconstruction technique...
March 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28394451/ancient-dna-analysis-identifies-marine-mollusc-shells-as-new-metagenomic-archives-of-the-past
#13
Clio Der Sarkissian, Vianney Pichereau, Catherine Dupont, Peter C Ilsøe, Mickael Perrigault, Paul Butler, Laurent Chauvaud, Jón Eiríksson, James Scourse, Christine Paillard, Ludovic Orlando
Marine mollusc shells enclose a wealth of information on coastal organisms and their environment. Their life history traits as well as (palaeo-) environmental conditions, including temperature, food availability, salinity, and pollution, can be traced through the analysis of their shell (micro-) structure and biogeochemical composition. Adding to this list the DNA entrapped in shell carbonate biominerals potentially offers a novel and complementary proxy both for reconstructing palaeoenvironments and tracking mollusc evolutionary trajectories...
April 10, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/28392451/electron-tomography-simulator-with-realistic-3d-phantom-for-evaluation-of-acquisition-alignment-and-reconstruction-methods
#14
Xiaohua Wan, Tsvi Katchalski, Christopher Churas, Sreya Ghosh, Sebastien Phan, Albert Lawrence, Yu Hao, Ziying Zhou, Ruijuan Chen, Yu Chen, Fa Zhang, Mark H Ellisman
Because of the significance of electron microscope tomography in the investigation of biological structure at nanometer scales, ongoing improvement efforts have been continuous over recent years. This is particularly true in the case of software developments. Nevertheless,verification of improvements delivered by new algorithms and software remains difficult. Current analysis tools do not provide adaptable and consistent methods for quality assessment.This is particularly true with images of biological samples, due to image complexity, variability, low contrast and noise...
April 6, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28391532/outcome-of-a-graduated-minimally-invasive-facial-reanimation-in-patients-with-facial-paralysis
#15
Laura C Holtmann, Anja Eckstein, Kerstin Stähr, Minzhi Xing, Stephan Lang, Stefan Mattheis
Peripheral paralysis of the facial nerve is the most frequent of all cranial nerve disorders. Despite advances in facial surgery, the functional and aesthetic reconstruction of a paralyzed face remains a challenge. Graduated minimally invasive facial reanimation is based on a modular principle. According to the patients' needs, precondition, and expectations, the following modules can be performed: temporalis muscle transposition and facelift, nasal valve suspension, endoscopic brow lift, and eyelid reconstruction...
April 8, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28386857/reconstructing-the-recent-visual-past-hierarchical-knowledge-based-effects-in-visual-working-memory
#16
Marie Poirier, Daniel Heussen, Silvio Aldrovandi, Lauren Daniel, Saiyara Tasnim, James A Hampton
This paper presents two experiments that examine the influence of multiple levels of knowledge on visual working memory (VWM). Experiment 1 focused on memory for faces. Faces were selected from continua that were constructed by morphing two face photographs in 100 steps; half of the continua morphed a famous face into an unfamiliar one, while the other half used two unfamiliar faces. Participants studied six sequentially presented faces each from a different continuum, and at test they had to locate one of these within its continuum...
April 6, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28385570/-why-is-it-important-to-differentiate-trichoblastic-carcinomas-ct-from-basal-cell-carcinomas-cbc-about-21-cases
#17
M Thomas, C Bruant-Rodier, F Bodin, B Cribier, M Huther, C Dissaux
Trichoblastic carcinoma is a rare epithelial malignant epithelial tumor, its diagnosis is difficult and the therapeutic management is non-consensual. This retrospective study, carried out between 2009 and 2015, covered 21 cases and analyzed the diagnostic and therapeutic characteristics of trichoblastic carcinomas. Sex ratio is 2. Trichoblastic carcinoma predominated in the face (65% of cases), particularly in perinasal (30% of cases). Its clinical presentation is in 95% of cases as basal cell carcinoma, which is the first clinical diagnosis evoked...
April 3, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28375379/three-dimensional-integral-imaging-and-object-detection-using-long-wave-infrared-imaging
#18
Satoru Komatsu, Adam Markman, Abhijit Mahalanobis, Kenny Chen, Bahram Javidi
We propose a passive three-dimensional (3D) imaging technique based on integral imaging using a long-wave infrared (LWIR) camera. 3D imaging can improve visualization and detection of objects in adverse environments, such as low light levels and the presence of partial occlusions, along with depth estimation by reconstructing the scene at the plane of the object. This is achieved by capturing multiple two-dimensional images, known as elemental images (EI), of a scene with each image having a unique perspective of the 3D objects...
March 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28372892/ovarian-tissue-cryopreservation-in-female-to-male-transgender-people-insights-into-ovarian-histology-and-physiology-after-prolonged-androgen-treatment
#19
Chloë De Roo, Sylvie Lierman, Kelly Tilleman, Karen Peynshaert, Kevin Braeckmans, Mirte Caanen, Cornelius B Lambalk, Steven Weyers, Guy T'Sjoen, Ria Cornelissen, Petra De Sutter
Female-to-male transgender people (trans men) are faced with the risk of losing their reproductive potential owing to gender-affirming hormone treatment and genital reconstructive surgery. This observational, prospective cohort study investigates the effect of prolonged androgen therapy on their ovarian histology and fertility preservation perspectives. Hormone serum levels, ovarian histology and cumulus-oocyte complexes (COC) of 40 transsexual men were analysed at the moment of hysterectomy with bilateral oophorectomy in the context of genital reconstructive surgery after testosterone treatment (58...
March 21, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28369974/forensic-facial-reconstruction-relationship-between-the-alar-cartilage-and-piriform-aperture
#20
Raíssa Ananda Paim Strapasson, Lara Maria Herrera, Rodolfo Francisco Haltenhoff Melani
During forensic facial reconstruction, facial features may be predicted based on the parameters of the skull. This study evaluated the relationships between alar cartilage and piriform aperture and nose morphology and facial typology. Ninety-six cone beam computed tomography images of Brazilian subjects (49 males and 47 females) were used in this study. OsiriX software was used to perform the following measurements: nasal width, distance between alar base insertion points, lower width of the piriform aperture, and upper width of the piriform aperture...
March 29, 2017: Journal of Forensic Sciences
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