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https://www.readbyqxmd.com/read/28343286/a-mimic-of-sexually-motivated-homicide-insect-stings-and-heat-exhaustion-in-a-forest
#1
Nancy X Liu, Michael S Pollanen
We report the case a woman who was found dead in a forest. The body was nude and the position of the body suggested a sexually motivated homicide. We concluded that death was not related to homicide, but was related to the conjunction of environmental factors, including insect stings, and acute psychosis. A medicolegal death investigation with postmortem examination was undertaken to determine cause of death. At the scene, the body was supine with legs spread apart and the knees flexed, exposing the external genitalia...
March 25, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28343061/automated-diabetic-macular-edema-dme-grading-system-using-dwt-dct-features-and-maculopathy-index
#2
U Rajendra Acharya, Muthu Rama Krishnan Mookiah, Joel E W Koh, Jen Hong Tan, Sulatha V Bhandary, A Krishna Rao, Yuki Hagiwara, Chua Kuang Chua, Augustinus Laude
The cause of diabetic macular edema (DME) is due to prolonged and uncontrolled diabetes mellitus (DM) which affects the vision of diabetic subjects. DME is graded based on the exudate location from the macula. It is clinically diagnosed using fundus images which is tedious and time-consuming. Regular eye screening and subsequent treatment may prevent the vision loss. Hence, in this work, a hybrid system based on Radon transform (RT), discrete wavelet transform (DWT) and discrete cosine transform (DCT) are proposed for an automated detection of DME...
March 19, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28340375/repetitive-tms-in-right-sensorimotor-areas-affects-the-selection-and-completion-of-contralateral-movements
#3
Maria Gutierrez-Herrera, Styrmir Saevarsson, Thomas Huber, Joachim Hermsdörfer, Waltraud Stadler
Although the existence of directional motor deficits (DMD) associated with movement planning and/or execution seems to be widely recognized, neglect and single cell studies examining their neuroanatomical foundation have produced contradictory and inconclusive findings. The present study assessed the occurrence of DMD following the application of repetitive transcranial magnetic stimulation (rTMS) over two regions, as commonly reported in the neglect literature, namely the right middle frontal gyrus (rMFG) and the right angular gyrus (rAG)...
February 24, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28339486/a-top-down-manner-based-dcnn-architecture-for-semantic-image-segmentation
#4
Kai Qiao, Jian Chen, Linyuan Wang, Lei Zeng, Bin Yan
Given their powerful feature representation for recognition, deep convolutional neural networks (DCNNs) have been driving rapid advances in high-level computer vision tasks. However, their performance in semantic image segmentation is still not satisfactory. Based on the analysis of visual mechanism, we conclude that DCNNs in a bottom-up manner are not enough, because semantic image segmentation task requires not only recognition but also visual attention capability. In the study, superpixels containing visual attention information are introduced in a top-down manner, and an extensible architecture is proposed to improve the segmentation results of current DCNN-based methods...
2017: PloS One
https://www.readbyqxmd.com/read/28339457/targeted-aav5-smad7-gene-therapy-inhibits-corneal-scarring-in-vivo
#5
Suneel Gupta, Jason T Rodier, Ajay Sharma, Elizabeth A Giuliano, Prashant R Sinha, Nathan P Hesemann, Arkasubhra Ghosh, Rajiv R Mohan
Corneal scarring is due to aberrant activity of the transforming growth factor β (TGFβ) signaling pathway following traumatic, mechanical, infectious, or surgical injury. Altered TGFβ signaling cascade leads to downstream Smad (Suppressor of mothers against decapentaplegic) protein-mediated signaling events that regulate expression of extracellular matrix and myogenic proteins. These events lead to transdifferentiation of keratocytes into myofibroblasts through fibroblasts and often results in permanent corneal scarring...
2017: PloS One
https://www.readbyqxmd.com/read/28339414/update-on-the-application-of-optic-nerve-sheath-fenestration
#6
Hui Chen, Qian Zhang, Song Tan, Huazhu Fu, Bradley K Farris, Zhenglin Yang
BACKGROUND: With the ongoing development of surgical procedures and instruments, the safety of optic nerve sheath fenestration (ONSF) has been improved. OBJECTIVE: Through the past three decades, progress has been made in preventing visual loss from chronic optic nerve swelling in idiopathic intracranial hypertension (IIH), secondary intracranial hypertension and local optic nerve diseases. We now review the updated application of ONSF in those diseases. METHODS: The application of ONSF in papilledema due to IIH, secondary intracranial hypertension to cerebral venous sinus occlusion, Cryptococcal meningitis, and intracranial mass or tumors is reviewed...
March 23, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28338667/primary-photodynamic-therapy-with-verteporfin-for-small-pigmented-posterior-pole-choroidal-melanoma
#7
I D Fabian, A W Stacey, V Papastefanou, L Al Harby, A K Arora, M S Sagoo, V M L Cohen
PurposeThe purpose of the study was to investigate the outcomes of primary photodynamic therapy (PDT) for small pigmented posterior pole choroidal melanoma.Patients and methodsProspective interventional consecutive case series of 15 patients with small pigmented posterior pole choroidal melanoma, who were treated with three sessions of PDT and followed-up thereafter. Risk factors for failure were assessed and outcome measures at presentation were compared to those at last follow-up visit.ResultsTumor control was achieved in 12 (80%) patients in a median follow-up time of 15 months (mean 14, range 8-18)...
March 24, 2017: Eye
https://www.readbyqxmd.com/read/28338599/volumetric-control-of-whole-blood-collection-in-austere-environments
#8
Michael A Meledeo, Andrew D Fisher, Grantham C Peltier, Ethan A Miles, William B Muse, Win B Kerr, Shawn C Nessen, Andrew P Cap
INTRODUCTION: Fresh whole blood transfusions are a powerful tool in prehospital care; however, the lack of equipment such as a scale in field situations frequently leads to collections being under- or overfilled, leading to complications for both patient and donor. This study describes two methods for simple, rapid control of collection bag volume: (1) a length of material to constrict the bag, and (2) folding/clamping the bag. METHOD: Whole blood collection bags were allowed to fill with saline via gravity...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28338564/studying-the-retinal-source-of-photophobia-by-facial-electroretinography
#9
Christopher W Tyler, Lora T Likova
PURPOSE: Photophobia is a debilitating clinical condition that disrupts the ability to use vision for everyday tasks in bright lighting conditions. The goal of the study is to develop a methodology to study the neural basis of photophobia and the contribution of the melanopic pathway to its etiology with differential chromatic responses by means of standard electroencephalographic recording equipment. METHODS: We introduce and validate the approach of recording wavelength-specific electroretinographic (ERG) responses from the face electrodes of the high-density whole-head electroencephalography recording system under light-adapted conditions...
April 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28338562/making-eye-health-a-population-imperative-a-vision-for-tomorrow-a-report-by-the-committee-on-public-health-approaches-to-reduce-vision-impairment-and-promote-eye-health
#10
Lori L Grover
No abstract text is available yet for this article.
April 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28338557/ruthenium-106-brachytherapy-in-the-treatment-of-circumscribed-choroidal-hemangioma
#11
Masood Naseripour, Arash Maleki, Arezoo Astaraki, Ahad Sedaghat, Ramin Jaberi, Stacey Lee, Zohreh Azma, Sukhum Silpa-Archa
PURPOSE: To examine the efficacy and safety of Ruthenium-106 plaque radiotherapy in the treatment of circumscribed choroidal hemangioma. METHODS: Twenty-one eyes of 21 patients diagnosed with symptomatic circumscribed choroidal hemangioma who underwent Ruthenium-106 plaque radiotherapy were included in the study. Clinical response, ancillary tests finding improvement, and major side effects were evaluated. RESULTS: From the initial to the 1-year follow-up visits, vision improved in 12 eyes (57%), was stable in 7 eyes (33%), and became worse in 2 eyes (10%)...
March 23, 2017: Retina
https://www.readbyqxmd.com/read/28338307/evaluation-of-the-spies%C3%A2-modalities-image-quality
#12
Esteban Emiliani, Michele Talso, Mohammed Baghdadi, Aarón Barreiro, Andrea Orosa, Pol Serviàn, Pavel Gavrilov, Silvia Proietti, Olivier Traxer
INTRODUCTION: The Spies™ system (Karl-Storz®) was introduced into digital ureteroscopy to improve endoscopic vision. To date, there is no data to either indicate which of the Spies modalities is better for improving diagnosis and treatment procedures, nor to compare the modalities in terms of image quality. The aim of this study was to evaluate and compare the image quality of five Spies™ modalities (SM) to the standard white light in an in-vitro model. MATERIALS AND METHODS: Two standardized grids and 3 stones of different composition were recorded in white light and the 5SM (Clara, Chroma, Clara+Chroma), Spectra A and B) using 4 standardized aqueous scenarios...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28338250/diversity-in-warning-coloration-is-easily-recognised-by-avian-predators
#13
Lina María Arenas, Martin Stevens
Warning coloration is a widespread strategy to alert predators about prey unprofitability. The success of this strategy partly depends on predators being able to learn and recognise certain signals as indicators of toxicity, and theory predicts that this is easier if signals converge on similar colours. However, the diversity in warning signal form is astonishing, contradicting predictions. Here, we quantified ladybird signal diversity with respect to avian vision, measuring how unique and discernable each signal is from one another...
March 24, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28338128/metal-organic-and-covalent-organic-frameworks-as-single-site-catalysts
#14
REVIEW
S M J Rogge, A Bavykina, J Hajek, H Garcia, A I Olivos-Suarez, A Sepúlveda-Escribano, A Vimont, G Clet, P Bazin, F Kapteijn, M Daturi, E V Ramos-Fernandez, F X Llabrés I Xamena, V Van Speybroeck, J Gascon
Heterogeneous single-site catalysts consist of isolated, well-defined, active sites that are spatially separated in a given solid and, ideally, structurally identical. In this review, the potential of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) as platforms for the development of heterogeneous single-site catalysts is reviewed thoroughly. In the first part of this article, synthetic strategies and progress in the implementation of such sites in these two classes of materials are discussed...
March 24, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28338047/automated-detection-and-enumeration-of-marine-wildlife-using-unmanned-aircraft-systems-uas-and-thermal-imagery
#15
A C Seymour, J Dale, M Hammill, P N Halpin, D W Johnston
Estimating animal populations is critical for wildlife management. Aerial surveys are used for generating population estimates, but can be hampered by cost, logistical complexity, and human risk. Additionally, human counts of organisms in aerial imagery can be tedious and subjective. Automated approaches show promise, but can be constrained by long setup times and difficulty discriminating animals in aggregations. We combine unmanned aircraft systems (UAS), thermal imagery and computer vision to improve traditional wildlife survey methods...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337834/retinal-dystrophy-in-two-boys-with-costello-syndrome-due-to-the-hras-p-gly13cys-mutation
#16
Mary Ella Pierpont, Mary Richards, W Keith Engel, Nancy J Mendelsohn, C Gail Summers
Features of Costello Syndrome, a systemic disorder caused by germline mutations in the proto-oncogene HRAS from the RAS/MAPK pathway, include failure-to-thrive, short stature, coarse facial features, cardiac defects including hypertrophic cardiomyopathy, intellectual disability, and predisposition to neoplasia. Two unrelated boys with Costello syndrome and an HRAS mutation (p.Gly13Cys) are presented with their ophthalmologic findings. Both had early symptoms of nystagmus, photophobia, and vision abnormalities...
March 23, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28337090/is-the-child-to-child-approach-useful-in-improving-uptake-of-eye-care-services-in-difficult-to-reach-rural-communities-experience-from-southwest-nigeria
#17
O O Ayorinde, G V S Murthy, O O Akinyemi
BACKGROUND: To determine if primary school pupils aged 9-14 years can be satisfactorily trained, using the child-to- parent approach, to assess vision, refer and motivate people to attend screening eye camps. METHOD: Ninety pupils aged 9-14 years attending two purposively-selected primary schools were selected by simple random sampling. Using the child-to-parent approach and Snellens 6/60 illiterate E-chart, participants had a three-day knowledge and skill-based training followed by 2 days of community-based vision assessment and referral of those assessed...
December 2016: Annals of Ibadan Postgraduate Medicine
https://www.readbyqxmd.com/read/28336424/the-impact-of-oxidative-stress-and-inflammation-on-rpe-degeneration-in-non-neovascular-amd
#18
REVIEW
Sayantan Datta, Marisol Cano, Katayoon Ebrahimi, Lei Wang, James T Handa
The retinal pigment epithelium (RPE) is a highly specialized, unique epithelial cell that interacts with photoreceptors on its apical side and with Bruch's membrane and the choriocapillaris on its basal side. Due to vital functions that keep photoreceptors healthy, the RPE is essential for maintaining vision. With aging and the accumulated effects of environmental stresses, the RPE can become dysfunctional and die. This degeneration plays a central role in age-related macular degeneration (AMD) pathobiology, the leading cause of blindness among the elderly in western societies...
March 20, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28336401/performance-of-the-spot-vision-screener-in-children-younger-than-three-years-of-age
#19
Blake D Forcina, M Millicent Peterseim, M Edward Wilson, Edward W Cheeseman, Samuel Feldman, Amanda L Marzolf, Bethany J Wolf, Rupal H Trivedi
PURPOSE: To evaluate the use of the Spot Vision Screener (Spot; Welch Allyn, Skaneateles Falls, NY) for detection of amblyopia risk factors in children aged 6 months to 3 years, as defined by the 2013 guidelines of the American Association for Pediatric Ophthalmology and Strabismus. DESIGN: Reliability analysis METHODS: In this study, children seen from 01 June 2012 to 30 April 2016 were tested with the Spot during a routine visit. Enrolled children underwent a comprehensive eye examination including cycloplegic refraction and sensorimotor testing within six months of the testing date by a pediatric ophthalmologist masked to the Spot results...
March 20, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28336283/-early-efficacy-of-dexamethasone-implant-ozurdex-%C3%A2-in-diabetic-macular-edema-real-life-study
#20
V Sarda, F Fajnkuchen, S Nghiem-Buffet, T Grenet, G Chaine, A Giocanti-Auregan
PURPOSE: To assess early efficacy of dexamethasone intravitreal implant 0.7mg (OZURDEX(®)) at the time of peak efficacy (2 months after injection) in patients with decreased visual acuity secondary to diabetic macular edema (DME). MATERIALS AND METHODS: Retrospective monocentric study. Inclusion criteria were best-corrected visual acuity (BCVA)≤70 letters (20/40) due to DME and central retinal thickness (CRT)≥300 microns (Cirrus 2, Carl Zeiss Meditec, Inc, Dublin)...
March 20, 2017: Journal Français D'ophtalmologie
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