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https://www.readbyqxmd.com/read/29145690/-visual-analysis-of-retinal-oct-data
#1
Martin Röhlig, Anselm Jünemann, Dagmar-Christiane Fischer, Ruby Kala Prakasam, Oliver Stachs, Heidrun Schumann
Optical coherence tomography (OCT) enables noninvasive high-resolution 3D imaging of the human retina, and thus plays a fundamental role in ophthalmology. Via OCT examination, even subtle retinal changes can be captured, which occur in very early stages of different diseases (e.g., glaucoma, diabetes mellitus, or age-related macular degeneration). Yet, analyzing the resulting data is challenging. Conventionally, OCT data are strongly aggregated via automated methods. While this reduces the amount of information to be analyzed, it also makes it difficult, if not impossible, to identify small and localized retinal changes...
November 16, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29145606/-prokaryotic-pathway-is-not-prokaryotic-non-cyanobacterial-origin-of-the-chloroplast-lipid-biosynthetic-pathway-revealed-by-comprehensive-phylogenomic-analysis
#2
Naoki Sato, Koichiro Awai
Lipid biosynthesis within the chloroplast, or more generally plastids, was conventionally called "prokaryotic pathway", which produces glycerolipids bearing C18 acids at the sn-1 position and C16 acids at the sn-2 position, as in cyanobacteria such as Anabaena and Synechocystis. This positional specificity is determined during the synthesis of phosphatidate, which is a precursor to diacylglycerol, the acceptor of galactose for the synthesis of galactolipids. The first acylation at sn-1 is catalyzed by glycerol-3-phosphate acyltransferase (GPAT or GPT), whereas the second acylation at sn-2 is performed by lysophosphatidate acyltransferase (LPAAT, AGPAT or PlsC)...
November 14, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29145595/synchrony-weather-and-cycles-in-southern-pine-beetle-coleoptera-curculionidae
#3
John D Reeve
Spatial synchrony and cycles are common features of forest insect pests, but are often studied as separate phenomenon. Using time series of timber damage caused by Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae) (southern pine beetle) in 10 states within the southern United States, this study examines synchrony in D. frontalis abundance, the synchronizing effects of temperature extremes, and the evidence for shared cycles among state populations. Cross-correlation and cluster analyses are used to quantify synchrony across a range of geographic distances and to identify groups of states with synchronous dynamics...
November 14, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29145567/influence-of-airflow-rate-and-stimulus-concentration-on-olfactory-event-related-potentials-oerp-in-humans
#4
Pengfei Han, Valentin A Schriever, Per Peters, Heidi Olze, Florian C Uecker, Thomas Hummel
Although the association between odor concentration and olfactory event-related potential (OERP) has been studied, less is known about the influence of airflow on OERP. The aim of this study was to investigate the influence of airflow rate and stimulus concentration on OERP in humans. EEG data were collected from young healthy volunteers (n=17) in separate sessions where 2-phenylethanol (PEA) was delivered in the following conditions: 8L/min 50%v/v, 8L/min 30%v/v, 4L/min 100%v/v and 4L/min 60%v/v. Odor concentrations are referred to the %v/v achieved with air dilution and was not measured in the nose...
November 14, 2017: Chemical Senses
https://www.readbyqxmd.com/read/29145428/abnormal-brain-white-matter-microstructure-is-associated-with-both-pre-hypertension-and-hypertension
#5
Hideaki Suzuki, He Gao, Wenjia Bai, Evangelos Evangelou, Ben Glocker, Declan P O'Regan, Paul Elliott, Paul M Matthews
OBJECTIVES: To characterize effects of chronically elevated blood pressure on the brain, we tested for brain white matter microstructural differences associated with normotension, pre-hypertension and hypertension in recently available brain magnetic resonance imaging data from 4659 participants without known neurological or psychiatric disease (62.3±7.4 yrs, 47.0% male) in UK Biobank. METHODS: For assessment of white matter microstructure, we used measures derived from neurite orientation dispersion and density imaging (NODDI) including the intracellular volume fraction (an estimate of neurite density) and isotropic volume fraction (an index of the relative extra-cellular water diffusion)...
2017: PloS One
https://www.readbyqxmd.com/read/29145423/examining-the-relationships-between-body-image-eating-attitudes-bmi-and-physical-activity-in-rural-and-urban-south-african-young-adult-females-using-structural-equation-modeling
#6
Alessandra Prioreschi, Stephanie V Wrottesley, Emmanuel Cohen, Ankita Reddy, Rihlat Said-Mohamed, Rhian Twine, Stephen M Tollman, Kathleen Kahn, David B Dunger, Shane A Norris
The persistence of food insecurity, malnutrition, increasing adiposity, and decreasing physical activity, heightens the need to understand relationships between body image satisfaction, eating attitudes, BMI and physical activity levels in South Africa. Females aged 18-23 years were recruited from rural (n = 509) and urban (n = 510) settings. Body image satisfaction was measured using Stunkard's silhouettes, and the 26-item Eating Attitudes questionnaire (EAT-26) was used to evaluate participants' risk of disordered eating...
2017: PloS One
https://www.readbyqxmd.com/read/29145322/ptosis-as-the-only-manifestation-of-diabetic-superior-division-oculomotor-nerve-palsy-a-case-report
#7
Ping-Yin Chou, Kun-Han Wu, Poyin Huang
RATIONALE: Diabetic oculomotor nerve palsies, also called ischemic third nerve palsies, are the most common etiologic subset of oculomotor nerve palsy in adults. Diabetic oculomotor nerve palsies typically present with ptosis and diplopia, but pupillary function is often spared. The oculomotor nerve separates into superior division and inferior division, with the superior division innervating the superior rectus and levator palpebrae superioris. The diabetic oculomotor nerve palsy may affect isolated superior or inferior division of the oculomotor nerve, but diplopia usually exists...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145265/corneal-clarity-measurements-in-healthy-volunteers-across-different-age-groups-observational-study
#8
Khaled Alzahrani, Fiona Carley, Arun Brahma, Debbie Morley, M Chantal Hillarby
The aim of this study was to standardize and investigate the changes in corneal clarity with age. Densitometry software for the Oculus Pentacam was used to examine corneal clarity at different age groups.A total of 192 eyes from 97 healthy participants were included in this cohort comparative nonrandomized, cross-sectional study. An Oculus Pentcam was used to image the cornea of healthy participants grouped by age (between 10 and 70 years old). Data from the densitometry output have been used to determine clarity in concentric zones and different depths of the cornea...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145262/management-of-radiation-induced-rectovesical-fistula-in-a-woman-using-ileum-a-case-report-and-review-of-the-literature
#9
Qiqi Mao, Jindan Luo, Jiajie Fang, Hai Jiang
BACKGROUND: Radiation-induced rectovesical fistulas (RVFs) require the most demanding treatment. We presented a rare case of postradiation RVF in a woman repaired with ileum. CASE PRESENTATION: A 49-year-old women was referred to our department for fecaluria and dysuria after radiation for cervical cancer. The voiding cystourethrography demonstrated a large RVF. A segment of ileum was separated into 2 parts for the simultaneous reconstruction of bladder and rectum, which led to a permanently closed fistula...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145216/comparison-of-warfarin-use-in-terms-of-efficacy-and-safety-in-two-different-polyclinics
#10
Salih Kılıç, Hatice Soner Kemal, Elif İlkay Yüce, Evrim Şimşek, Burcu Yağmur, Nuray Memişoğlu Akgül, Cahide Soydaş Çınar, Mehdi Zoghi, Cemil Gürgün
OBJECTIVE: This study compared the efficacy and safety of warfarin in specialized international normalized ratio (INR) outpatient clinic (INR-C) and in general cardiology outpatient clinic (General-C). METHODS: Herein, 381 consecutive patients with a regular follow-up at INR-C (n=233) or General-C (n=148) for at least 1 year were retrospectively included. While INR-C patients were followed by a single experienced trained nurse, General-C patients were followed by a different cardiologist who worked in a rotational principle every month...
November 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29145176/the-membrane-attack-complex-perforin-superfamily
#11
Gabriel Moreno-Hagelsieb, Bennett Vitug, Arturo Medrano-Soto, Milton H Saier
The membrane attack complex/perforin (MACPF) superfamily consists of a diverse group of proteins involved in bacterial pathogenesis and sporulation as well as eukaryotic immunity, embryonic development, neural migration and fruiting body formation. The present work shows that the evolutionary relationships between the members of the superfamily, previously suggested by comparison of their tertiary structures, can also be supported by analyses of their primary structures. The superfamily includes the MACPF family (TC 1...
November 17, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29145172/volatiles-from-cinnamomum-cassia-buds
#12
Daniel Sandner, Ulrich Krings, Ralf G Berger
While the chemical composition of leaf and stem bark essential oils of the Chinese cinnamon, Cinnamomum cassia (L.) J. Presl, has been well investigated, little is known about the volatilom of its buds, which appeared recently on German markets. Soxhlet extracts of the commercial samples were prepared, fractionated using silica gel and characterised by gas chromatography-flame ionisation detector (GC-FID) for semi-quantification, by gas chromatography-mass spectrometry (GC-MS) for identification and by GC-FID/olfactometry for sensory evaluation...
November 16, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29145162/biomonitoring-based-exposure-assessment-of-benzene-toluene-ethylbenzene-and-xylene-among-workers-at-petroleum-distribution-facilities
#13
Behzad Heibati, Krystal J Godri Pollitt, Jamshid Yazdani Charati, Alan Ducatman, Mohammad Shokrzadeh, Ali Karimi, Mahmoud Mohammadyan
Elevated emissions of volatile organic compounds, including benzene, toluene, ethylbenzene, and o, p, and m-xylenes (BTEX), are an occupational health concern at oil transfer stations. This exploratory study investigated personal exposure to BTEX through environmental air and urine samples collected from 50 male workers at a major oil distribution company in Iran. Airborne BTEX exposures were evaluated over 8h periods during work-shift by using personal passive samplers. Urinary BTEX levels were determined using solid-phase microextraction with gas chromatography mass spectrometry for separation and detection...
November 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29145156/the-potential-of-ion-mobility-mass-spectrometry-for-high-throughput-and-high-resolution-lipidomics
#14
REVIEW
Christine Hinz, Sonia Liggi, Julian L Griffin
Lipids are a large and highly diverse family of biomolecules, which play essential structural, storage and signalling roles in cells and tissues. Although traditional mass spectrometry (MS) approaches used in lipidomics are highly sensitive and selective, lipid analysis remains challenging due to the chemical diversity of lipid structures, multiple isobaric species and incomplete separation using many forms of chromatography. Ion mobility (IM) separates ions in the gas phase based on their physicochemical properties...
November 13, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/29145123/continuous-liquid-fermentation-of-pretreated-waste-activated-sludge-for-high-rate-volatile-fatty-acids-production-and-online-nutrients-recovery
#15
Lihui Zhang, He Liu, Zhiyong Zheng, Huijun Ma, Meng Yang, Hongbo Liu
Raw sludge was pretreated, and the separated sludge liquid was used as substrate in a continuous operated up-flow anaerobic sludge blanket reactor to produce volatile fatty acids (VFAs). The highest VFA productivity of continuous fermentation with sludge liquid at an organic loading rate (OLR) of 10.0 kg COD/m(3)/d was about 5.0-fold and 4.0-fold higher than batch and semi-continuous fermentation with pretreated sludge slurry, respectively. Moreover, the liquid fermentation with an OLR of 10.0 kg COD/m(3)/d consumed the least energy, which was about 10...
November 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29145110/traumatic-separation-of-osseous-segments-in-a-double-layered-patella
#16
Andreas Jørgensen, Erik Brandt, Anton Ulstrup
INTRODUCTION: Double-layered patella is a rare intra-articular disorder associated with multiple epiphyseal dysplasia. PRESENTATION OF CASE: We present a case of a 40-year old man with acute pain in his left knee after a tackle during soccer play. DISCUSSION: Clinical examination and radiographs confirmed the diagnosis of a bilateral double-layered patella with traumatic separation of the osseous segments on the afflicted left side. Surgical management comprised of open arthrotomy and debridement of the bony interface...
November 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29145044/image-processing-for-precise-three-dimensional-registration-and-stitching-of-thick-high-resolution-laser-scanning-microscopy-image-stacks
#17
Chloé Murtin, Carole Frindel, David Rousseau, Kei Ito
The possible depth of imaging of laser-scanning microscopy is limited not only by the working distances of objective lenses but also by image degradation caused by attenuation and diffraction of light passing through the specimen. To tackle this problem, one can either flip the sample to record images from both sides of the specimen or consecutively cut off shallow parts of the sample after taking serial images of certain thickness. Multiple image substacks acquired in these ways should be combined afterwards to generate a single stack...
November 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29145019/ordered-cylindrical-micropatterned-petri-dishes-used-as-scaffolds-for-cell-growth
#18
Van-Tien Bui, Le Thi Thuy, Joon Sig Choi, Ho-Suk Choi
Three-dimensional (3D) culture dish patterned with a microwell structure demonstrates a great application potential in biotechnology. This study reports on the easy fabrication of an ordered customizable honeycomb microwell array on the surface of polymer substrates including the commercial Petri dish to create a biological platform for cell culture. The fabrication method is based on a very simple solvent dip-coating technique and the methanol accumulation-induced phase separation in which a binary mixture of chloroform and methanol is used to induce a ternary solution and to guarantee the formation of the ordered pore array on the substrate...
November 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29144927/re-can-separation-of-the-scrotal-sac-in-proximal-hypospadias-reliably-predict-the-need-for-urethral-plate-transection
#19
Douglas A Canning
No abstract text is available yet for this article.
December 2017: Journal of Urology
https://www.readbyqxmd.com/read/29144888/energy-expenditure-and-intake-during-special-operations-forces-field-training-in-a-jungle-and-glacial-environment
#20
Caleb D Johnson, Andrew J Simonson, Matthew E Darnell, James P DeLany, Meleesa F Wohleber, Christopher Connaboy
The purpose of this study was to identify and compare energy requirements specific to Special Operations Forces in field training, in both cool and hot environments. Three separate training sessions were evaluated, two in a hot environment (n=21) and one in a cool environment (n=8). Total energy expenditure was calculated using doubly-labeled water. Dietary intake was assessed via self-report at the end of each training mission day, and macronutrient intakes were calculated. Across the three missions, mean energy expenditure (4,618 ± 1,350 kcal/day) exceeded mean energy intake (2,429 ± 838 kcal/day) by an average of 2,200 kcal/day...
November 16, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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