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https://www.readbyqxmd.com/read/28533952/quantifying-climate-change-impacts-emphasises-the-importance-of-managing-regional-threats-in-the-endangered-yellow-eyed-penguin
#1
Thomas Mattern, Stefan Meyer, Ursula Ellenberg, David M Houston, John T Darby, Melanie Young, Yolanda van Heezik, Philip J Seddon
Climate change is a global issue with effects that are difficult to manage at a regional scale. Yet more often than not climate factors are just some of multiple stressors affecting species on a population level. Non-climatic factors-especially those of anthropogenic origins-may play equally important roles with regard to impacts on species and are often more feasible to address. Here we assess the influence of climate change on population trends of the endangered Yellow-eyed penguin (Megadyptes antipodes) over the last 30 years, using a Bayesian model...
2017: PeerJ
https://www.readbyqxmd.com/read/28533687/pulmonary-hypertension-and-vasculopathy-in-incontinentia-pigmenti-a-case-report
#2
Abduljabbar Alshenqiti, Marwan Nashabat, Hissah AlGhoraibi, Omar Tamimi, Majid Alfadhel
Incontinentia pigmenti (IP; Bloch-Sulzberger syndrome) is a rare, genetic syndrome inherited as an X-linked dominant trait. It primarily affects female infants and is lethal in the majority of males during fetal life. The clinical findings include skin lesions, developmental defects, and defects of the eyes, teeth, skeletal system, and central nervous system. Cardiovascular complications of this disease in general, and pulmonary hypertension in particular, are extremely rare. This report describes the case of a 3-year-old girl with IP complicated by pulmonary arterial hypertension...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28529481/topical-ophthalmic-formulation-of-trichostatin-a-and-surr9-c84a-for-quick-recovery-post-alkali-burn-of-corneal-haze
#3
Kislay Roy, Chun Hei Antonio Cheung, Rupinder K Kanwar, Rajat Sandhir, Jagat R Kanwar
Alkali burn injury is a true ocular emergency of the conjunctiva and cornea that requires immediate precision. Lack of an immediate therapy can lead to a substantial damage in the ocular surface and anterior segment further causing visual impairment and disfigurement. We explored the regenerative capability of dominant negative survivin protein (SurR9-C84A) and histone deacetylase inhibitor trichostatin-A (TSA) in vivo, in a rat alkali burn model. A topical insult in rat eyes with NaOH led to degradation of the conjunctival and corneal epithelium...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28528599/eeg-beta-2-power-as-surrogate-marker-for-memory-impairment-a-pilot-study
#4
Andreas K Kaiser, Michael Doppelmayr, Bernhard Iglseder
BACKGROUND: Memory deficits are dominant in dementia and are positively correlated with electroencephalographic (EEG) beta power. EEG beta power can predict the progression of Alzheimer´s (AD) as early as at the stage of mild cognitive impairment (MCI) and could possibly be used as surrogate marker for memory impairment. The objective of this study is to analyze the relationship between frontal and parietal EEG beta power and memory-test outcome. Frontal and parietal beta power is analyzed for a resting state and an eyes-closed backward counting condition and related to memory impairment parameters...
May 22, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28523525/etiology-and-outcomes-of-secondary-surgical-intervention-for-dissatisfied-patients-after-pseudophakic-monovision
#5
Sayaka Kato, Misae Ito, Kimiya Shimizu, Kazutaka Kamiya
PURPOSE: To evaluate the etiology and the clinical outcomes of secondary surgical interventions for dissatisfied patients after pseudophakic monovision. SETTING: Department of Ophthalmology, Kitasato University Hospital, Kanagawa, Japan. DESIGN: Retrospective case series. METHODS: This study comprised 12 eyes in 12 patients (age 66.2 ± 5.6 years) who underwent photorefractive keratectomy (PRK) enhancement to improve their dissatisfaction after pseudophakic monovision...
May 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28521875/exome-sequencing-reveals-a-de-novo-pold1-mutation-causing-phenotypic-variability-in-mandibular-hypoplasia-deafness-progeroid-features-and-lipodystrophy-syndrome-mdpl
#6
Sahar Elouej, Ana Beleza-Meireles, Richard Caswell, Kevin Colclough, Sian Ellard, Jean Pierre Desvignes, Christophe Béroud, Nicolas Lévy, Shehla Mohammed, Annachiara De Sandre-Giovannoli
BACKGROUND: Mandibular hypoplasia, deafness, progeroid features, and lipodystrophy syndrome (MDPL) is an autosomal dominant systemic disorder characterized by prominent loss of subcutaneous fat, a characteristic facial appearance and metabolic abnormalities. This syndrome is caused by heterozygous de novo mutations in the POLD1 gene. To date, 19 patients with MDPL have been reported in the literature and among them 14 patients have been characterized at the molecular level. Twelve unrelated patients carried a recurrent in-frame deletion of a single codon (p...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28516000/role-of-a-dual-splicing-and-amino-acid-code-in-myopia-cone-dysfunction-and-cone-dystrophy-associated-with-l-m-opsin-interchange-mutations
#7
Scott H Greenwald, James A Kuchenbecker, Jessica S Rowlan, Jay Neitz, Maureen Neitz
PURPOSE: Human long (L) and middle (M) wavelength cone opsin genes are highly variable due to intermixing. Two L/M cone opsin interchange mutants, designated LIAVA and LVAVA, are associated with clinical diagnoses, including red-green color vision deficiency, blue cone monochromacy, cone degeneration, myopia, and Bornholm Eye Disease. Because the protein and splicing codes are carried by the same nucleotides, intermixing L and M genes can cause disease by affecting protein structure and splicing...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28511421/surgical-outcome-of-epicanthus-and-telecanthus-correction-by-double-z-plasty-and-trans-nasal-fixation-with-prolene-suture-in-blepharophimosis-syndrome
#8
Salil Kumar Mandal, Aparna Mandal, James Christian Fleming, Tara Goecks, Andrew Meador, Brian T Fowler
INTRODUCTION: Blepharophimosis Syndrome (BPES) is a complex and rare disease characterized by epicanthus inversus, telecanthus, lateral ectropion, narrowed or shortened inter-palpebral fissure distance and ptosis. It is mostly bilateral and may or may not be symmetrical. It is typically inherited as an autosomal dominant trait. In sporadic cases, the disease may occur without a prior family history as a genetic mutation from a deletion or translocation of the FOXL2 gene, which maps to chromosome 3q23...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509639/factors-associated-with-simulator-assessed-laparoscopic-surgical-skills-of-veterinary-students
#9
Jessica J Kilkenny, Ameet Singh, Carolyn L Kerr, Deep K Khosa, Boel A Fransson
OBJECTIVE To determine whether simulator-assessed laparoscopic skills of veterinary students were associated with training level and prior experience performing nonlaparoscopic veterinary surgery and other activities requiring hand-eye coordination and manual dexterity. DESIGN Experiment. SAMPLE 145 students without any prior laparoscopic surgical or fundamentals of laparoscopic surgery (FLS) simulator experience in years 1 (n = 39), 2 (34), 3 (39), and 4 (33) at a veterinary college. PROCEDURES A questionnaire was used to collect data from participants regarding experience performing veterinary surgery, playing video games, and participating in other activities...
June 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28503023/do-resource-constraints-affect-lexical-processing-evidence-from-eye-movements
#10
Mallorie Leinenger, Mark Myslín, Keith Rayner, Roger Levy
Human language is massively ambiguous, yet we are generally able to identify the intended meanings of the sentences we hear and read quickly and accurately. How we manage and resolve ambiguity incrementally during real-time language comprehension given our cognitive resources and constraints is a major question in human cognition. Previous research investigating resource constraints on lexical ambiguity resolution has yielded conflicting results. Here we present results from two experiments in which we recorded eye movements to test for evidence of resource constraints during lexical ambiguity resolution...
April 2017: Journal of Memory and Language
https://www.readbyqxmd.com/read/28500220/environmental-enrichment-rescues-binocular-matching-of-orientation-preference-in-the-mouse-visual-cortex
#11
Jared Levine, Hui Chen, Yu Gu, Jianhua Cang
Neural circuits are shaped by experience during critical periods of development. Sensory deprivation during these periods permanently compromises an organism's ability to perceive the outside world. In the mouse visual system, normal visual experience during a critical period in early life drives the matching of individual cortical neurons' orientation preferences through the two eyes, likely a key step in the development of binocular vision. Here, in mice of both sexes, we show that the binocular matching process is completely blocked by monocular deprivation spanning the entire critical period...
May 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28495842/the-impact-of-ocular-hemodynamics-and-intracranial-pressure-on-intraocular-pressure-during-acute-gravitational-changes
#12
Emily S Nelson, Lealem Mulugeta, Andrew Feola, Julia Raykin, Jerry G Myers, Brian C Samuels, C Ross Ethier
Exposure to microgravity causes a bulk fluid shift toward the head, with concomitant changes in blood volume/pressure, intraocular pressure (IOP), and intracranial pressure (ICP). These and other factors are thought to contribute to Visual Impairment and Intracranial Pressure syndrome, a significant health concern for astronauts, characterized by degradation of visual function and ocular anatomical changes. Here we describe a lumped-parameter numerical model to simulate volume/pressure alterations in the eye during gravitational changes...
May 11, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28494159/association-of-visual-acuity-with-ocular-dominance-in-2045-myopic-patients
#13
Dan Zhou, Ni Ni, Aiping Ni, Qinjin Chen, Dan-Ning Hu, Jibo Zhou
PURPOSE: Previous studies of the relationship between visual acuity (VA) and ocular dominance have produced conflicting results. We hypothesized that (1) the discrepancies were related mostly to sample size and interocular visual acuity difference (IOVAD); (2) in large samples of individuals with marked IOVADs, the eye with the better uncorrected distance visual acuity (UDVA) would be dominant. These hypotheses were tested in a large group of myopic patients. METHODS: This prospective study of cycloplegic refraction involved 2045 myopic refractive surgery candidates...
May 11, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28493848/investigating-multi-objective-fluence-and-beam-orientation-imrt-optimization
#14
Peter Simon Potrebko, Jason Fiege, Matthew Biagioli, Jan Poleszczuk
Radiation Oncology treatment planning requires compromises to be made between clinical objectives that are invariably in conflict. It would be beneficial to have a "bird's-eye-view" perspective of the full spectrum of treatment plans that represent the possible trade-offs between delivering the intended dose to the planning target volume (PTV) while optimally sparing the organs-at-risk (OARs). In this work, the authors demonstrate Pareto-Aware Radiotherapy Evolutionary Treatment Optimization (PARETO), a multi-objective tool featuring such bird's-eye-view functionality, which optimizes fluence patterns and beam angles for intensity-modulated radiation therapy (IMRT) treatment planning...
May 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28484381/impaired-activation-of-visual-attention-network-for-motion-salience-is-accompanied-by-reduced-functional-connectivity-between-frontal-eye-fields-and-visual-cortex-in-strabismic-amblyopia
#15
Hao Wang, Sheila G Crewther, Minglong Liang, Robin Laycock, Tao Yu, Bonnie Alexander, David P Crewther, Jian Wang, Zhengqin Yin
Strabismic amblyopia is now acknowledged to be more than a simple loss of acuity and to involve alterations in visually driven attention, though whether this applies to both stimulus-driven and goal-directed attention has not been explored. Hence we investigated monocular threshold performance during a motion salience-driven attention task involving detection of a coherent dot motion target in one of four quadrants in adult controls and those with strabismic amblyopia. Psychophysical motion thresholds were impaired for the strabismic amblyopic eye, requiring longer inspection time and consequently slower target speed for detection compared to the fellow eye or control eyes...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28481155/a-unique-case-series-of-autosomal-recessive-bestrophinopathy-exhibiting-multigenerational-inheritance
#16
Joshua S Hardin, G Bradley Schaefer, Ahmed B Sallam, M Kathryn Williams, Sami Uwaydat
INTRODUCTION: Autosomal recessive bestrophinopathy (ARB) is a retinal disease caused by biallelic mutations of the BEST1 gene. It has a variable phenotype with white flecks in the retina, multifocal yellow subretinal deposits, macular edema, choroidal neovascularization, hyperopia, and electrophysiological abnormalities. We describe a family with ARB and multigenerational inheritance. METHODS: Three generations of a Middle Eastern family (a woman, one son, and two grandchildren) were evaluated by our ocular genetics team...
May 8, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28476512/reactivity-of-alpha-rhythms-to-eyes-opening-the-berger-effect-during-menstrual-cycle-phases
#17
Olga M Bazanova, E D Nikolenko, Robert J Barry
The impact of the menstrual cycle on the alpha EEG reactivity to eyes opening (Berger effect) was studied in relation to hormonal and EMG indices. Repeated measurements of salivary progesterone and cortisol, forehead EMG, and EEG alpha-activity indices in 76 healthy women aged 18-27 were obtained in resting eyes closed (1min) and eyes open (30s) conditions. Ten recording sessions occurred, at 2-3day intervals, during 1-2 menstrual cycles. For example, if a participant had a menstrual cycle length of 30-32days, she could finish the investigation during 1cycle, but if she had a 24day cycle, she would finish the investigation over 1 1/2cycles...
May 2, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28471103/measurement-of-angle-kappa-using-ultrasound-biomicroscopy-and-corneal-topography
#18
Joon Hyung Yeo, Nam Ju Moon, Jeong Kyu Lee
PURPOSE: To introduce a new convenient and accurate method to measure the angle kappa using ultrasound biomicroscopy (UBM) and corneal topography. METHODS: Data from 42 eyes (13 males and 29 females) were analyzed in this study. The angle kappa was measured using Orbscan II and calculated with UBM and corneal topography. The angle kappa of the dominant eye was compared with measurements by Orbscan II. RESULTS: The mean patient age was 36.4 ± 13...
April 24, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28470655/-elevated-intraocular-pressure-induces-cellular-responses-in-the-retinal-capillaries
#19
Katrin Brockhaus, Harutyun Melkonyan, Verena Prokosch, Solon Thanos
Background In the early diagnosis of clinical glaucoma, peripapillary bleedings were almost pathognomonic for a capillary insult. In the perfusion diagnostics, it is predominantly accepted that perfusion imbalances and IOP-induced changes occur and play a crucial role. Biomechanical peculiarities of the optic nerve head and cellular responses to astrocytes are also likely involved. Material and Methods We present in vivo and ex vivo models of IOP-elevation to enhance the resolution of examining cellular and molecular changes and to understand the mechanisms of capillary changes due to IOP-elevation...
May 3, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28467418/a-kcnc3-mutation-causes-a-neurodevelopmental-non-progressive-sca13-subtype-associated-with-dominant-negative-effects-and-aberrant-egfr-trafficking
#20
Swati Khare, Jerelyn A Nick, Yalan Zhang, Kira Galeano, Brittany Butler, Habibeh Khoshbouei, Sruti Rayaprolu, Tyisha Hathorn, Laura P W Ranum, Lisa Smithson, Todd E Golde, Martin Paucar, Richard Morse, Michael Raff, Julie Simon, Magnus Nordenskjöld, Karin Wirdefeldt, Diego E Rincon-Limas, Jada Lewis, Leonard K Kaczmarek, Pedro Fernandez-Funez, Harry S Nick, Michael F Waters
The autosomal dominant spinocerebellar ataxias (SCAs) are a diverse group of neurological disorders anchored by the phenotypes of motor incoordination and cerebellar atrophy. Disease heterogeneity is appreciated through varying comorbidities: dysarthria, dysphagia, oculomotor and/or retinal abnormalities, motor neuron pathology, epilepsy, cognitive impairment, autonomic dysfunction, and psychiatric manifestations. Our study focuses on SCA13, which is caused by several allelic variants in the voltage-gated potassium channel KCNC3 (Kv3...
2017: PloS One
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