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https://www.readbyqxmd.com/read/28937949/international-vision-care-issues-and-approaches
#1
Rohit C Khanna, Srinivas Marmamula, Gullapalli N Rao
Globally, 32.4 million individuals are blind and 191 million have moderate or severe visual impairment (MSVI); 80% of cases of blindness and MSVI are avoidable. However, great efforts are needed to tackle blindness and MSVI, as eye care in most places is delivered in isolation from and without significant integration with general health sectors. Success stories, including control of vitamin A deficiency, onchocerciasis, and trachoma, showed that global partnerships, multisectoral collaboration, public-private partnerships, corporate philanthropy, support from nongovernmental organizations-both local and international-and governments are responsible for the success of these programs...
September 15, 2017: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28937588/robust-dehaze-algorithm-for-degraded-image-of-cmos-image-sensors
#2
Chen Qu, Du-Yan Bi, Ping Sui, Ai-Nong Chao, Yun-Fei Wang
The CMOS (Complementary Metal-Oxide-Semiconductor) is a new type of solid image sensor device widely used in object tracking, object recognition, intelligent navigation fields, and so on. However, images captured by outdoor CMOS sensor devices are usually affected by suspended atmospheric particles (such as haze), causing a reduction in image contrast, color distortion problems, and so on. In view of this, we propose a novel dehazing approach based on a local consistent Markov random field (MRF) framework. The neighboring clique in traditional MRF is extended to the non-neighboring clique, which is defined on local consistent blocks based on two clues, where both the atmospheric light and transmission map satisfy the character of local consistency...
September 22, 2017: Sensors
https://www.readbyqxmd.com/read/28936368/uncertainty-quantified-computational-analysis-of-the-energetics-of-virus-capsid-assembly
#3
N Clement, M Rasheed, C Bajaj
Most of the existing research in assembly pathway prediction/analysis of viral capsids makes the simplifying assumption that the configuration of the intermediate states can be extracted directly from the final configuration of the entire capsid. This assumption does not take into account the conformational changes of the constituent proteins as well as minor changes to the binding interfaces that continue throughout the assembly process until stabilization. This paper presents a statistical-ensemble based approach which samples the configurational space for each monomer with the relative local orientation between monomers, to capture the uncertainties in binding and conformations...
December 2016: Proceedings
https://www.readbyqxmd.com/read/28935865/melanoblast-development-coincides-with-the-late-emerging-cells-from-the-dorsal-neural-tube-in-turtle-trachemys-scripta
#4
Ritva Rice, Judith Cebra-Thomas, Maarja Haugas, Juha Partanen, David P C Rice, Scott F Gilbert
Ectothermal reptiles have internal pigmentation, which is not seen in endothermal birds and mammals. Here we show that the development of the dorsal neural tube-derived melanoblasts in turtle Trachemys scripta is regulated by similar mechanisms as in other amniotes, but significantly later in development, during the second phase of turtle trunk neural crest emigration. The development of melanoblasts coincided with a morphological change in the dorsal neural tube between stages mature G15 and G16. The melanoblasts delaminated and gathered in the carapacial staging area above the neural tube at G16, and differentiated into pigment-forming melanocytes during in vitro culture...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934784/sonographic-guidance-for-supraclavicular-brachial-plexus-blocks-single-vs-double-injection-cluster-approach
#5
Jung Ju Choi, Hyun Jeong Kwak, Wol Seon Jung, Seung Hyun Chung, Mi Geum Lee
BACKGROUND: The cluster approach for supraclavicular brachial plexus block (SC-BPB) can be easily performed but may result in asymmetric local anesthetic (LA) spread. The authors hypothesized that the use of a cluster approach in each of the 2 planes would achieve better 3-dimensional LA distribution than the traditional single cluster approach. OBJECTIVES: The purpose of the present study was to compare a double injection (DI) in 2 planes (one injection in each plane) with the traditional single injection (SI) cluster approach for ultrasound-guided SC-BPB...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28932708/intracellular-trafficking-pathways-of-edwardsiella-tarda-from-clathrin-and-caveolin-mediated-endocytosis-to-endosome-and-lysosome
#6
Zhi-Hai Sui, Haijiao Xu, Hongda Wang, Shuai Jiang, Heng Chi, Li Sun
Edwardsiella tarda is a Gram-negative bacterium that can infect a broad range of hosts including humans and fish. Accumulating evidences have indicated that E. tarda is able to survive and replicate in host phagocytes. However, the pathways involved in the intracellular infection of E. tarda are unclear. In this study, we examined the entry and endocytic trafficking of E. tarda in the mouse macrophage cell line RAW264.7. We found that E. tarda entered RAW264.7 and multiplied intracellularly in a robust manner...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28931412/molecular-characterization-of-the-duck-enteritis-virus-us10-protein
#7
Daixi Zhang, Maoyin Lai, Anchun Cheng, Mingshu Wang, Ying Wu, Qiao Yang, Mafeng Liu, Dekang Zhu, Renyong Jia, Shun Chen, Kunfeng Sun, Xinxin Zhao, Xiaoyue Chen
BACKGROUND: There is little information regarding the duck enteritis virus (DEV) US10 gene and its molecular characterization. METHODS: Duck enteritis virus US10 was amplified and cloned into the recombinant vector pET32a(+). The recombinant US10 protein was expressed in Escherichia coli BL21 cells and used to immunize rabbits for the preparation of polyclonal antibodies. The harvested rabbit antiserum against DEV US10 was detected and analyzed by agar immunodiffusion...
September 20, 2017: Virology Journal
https://www.readbyqxmd.com/read/28930857/adductor-canal-block-with-local-infiltrative-analgesia-compared-with-local-infiltrate-analgesia-for-pain-control-after-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#8
Qiujuan Xing, Weiwei Dai, Dongfeng Zhao, Ji Wu, Chunshui Huang, Yun Zhao
BACKGROUND: This meta-analysis aimed to evaluate the efficiency and safety of the combined adductor canal block with peri-articular infiltration versus periarticular infiltration alone for pain control after total knee arthroplasty (TKA). METHODS: PubMed, Medline, Embase, Web of Science, and the Cochrane Library were searched to identify articles comparing the combined adductor canal block with peri-articular infiltration and periarticular infiltration alone for pain control after TKA...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930361/polyphilic-hydrogen-bonded-block-molecules-involving-semiperfluorinated-and-silylated-molecular-fragments
#9
Laura Vogel, Dietmar Janietz, Marko Prehm, Carsten Tschierske
2,4-Diamino-6-phenyl-1,3,5-triazines grafted with one or two semiperfluorinated chains at the phenyl substituent have been investigated in binary mixtures with one-chain and two-chain oligo(dimethylsiloxy) terminated 4-alkoxy- and 3,4-dialkoxybenzoic acids. Equimolar mixtures of the triazines with the complementary acids form discrete double hydrogen-bonded heterodimers with an elongated central core. Mesomorphic properties are observed only if at least two terminal fluoroalkyl chains are attached to the triazine entity...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28930357/nanoparticle-encapsulation-in-vesicles-formed-by-amphiphilic-diblock-copolymers
#10
Junying Yang, Yi Hu, Rong Wang, Daiqian Xie
We investigated the co-assembly of nanoparticles P and amphiphilic diblock copolymers AB in selective solvents using a dissipative particle dynamics (DPD) method. By controlling the nanoparticle concentration and the interaction parameter between the hydrophobic blocks and the solvents, we found that the aggregation morphology can be changed from rod-like micelles to disk-like micelles and further to vesicles. The ratio of the hydrophobic/hydrophilic block and the nanoparticle concentration largely affects the structural characteristics of vesicles and the dispersion of nanoparticles...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28928573/a-comparative-study-for-the-analgesic-efficacy-and-safety-profile-of-fentanyl-versus-clonidine-as-an-adjuvant-to-epidural-ropivacaine-0-75-in-lower-abdominal-surgeries
#11
Shuchi Nigam, Shivani Rastogi, Amit Tyagi, Rajlakshmi Bhandari
CONTEXT: Different adjuvants are coadministered with local anesthetics to improve the speed of onset and duration of analgesia, and to reduce the dose, the selection of which is often left to the choice of an anesthesiologist. AIM: The aim of this study was to compare the analgesic efficacy and safety profile of fentanyl and clonidine as an adjuvant to epidural ropivacaine anesthesia. SETTING AND DESIGN: With institutional ethical committee clearance, a prospective, randomized, placebo-controlled double-blind clinical study was conducted at Vivekananda Polyclinic and Institute of Medical Sciences, Lucknow...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928571/dexmedetomidine-as-adjuvant-to-lower-doses-of-intrathecal-bupivacaine-for-lower-limb-orthopedic-surgeries
#12
Taznim Mohamed, Indu Susheela, Beena P Balakrishnan, Suvarna Kaniyil
BACKGROUND: Dexmedetomidine, an α2 adrenergic agonist, has been found to be a useful adjuvant to local anesthetics. It has been found to produce satisfactory block with lower doses of spinal bupivacaine. AIM: The aim of this study is to compare the difference in spinal block characteristics and hemodynamic effects of 7, 8, and 9 mg hyperbaric bupivacaine combined with 5 μg dexmedetomidine and to find out the optimum dose that would provide satisfactory block and hemodynamic stability for lower limb orthopedic surgeries...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928566/effect-of-verapamil-as-an-adjuvant-to-levobupivacaine-in-supraclavicular-brachial-plexus-block
#13
Sidharth Sraban Routray, Debasis Mishra, Daityari Routray, Kasturi Nanda
BACKGROUND: Many adjuvants have been used with local anesthetics to reduce the time of onset and prolong the duration of analgesia in brachial plexus blocks. However, few studies are there using verapamil as an adjuvant with levobupivacaine. AIMS: This study aims to study the effects of verapamil as adjuvant to levobupivacaine in supraclavicular block for upper extremity surgery. METHODS: In this double-blinded clinical trial, 60 American Society of Anesthesiologist Class I and II patients posted to undergo upper extremity surgery were divided into 2 different groups randomly...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928559/a-comparative-study-between-intrathecal-isobaric-ropivacaine-0-75-plus-dexmedetomidine-and-isobaric-ropivacaine-0-75-plus-fentanyl-for-lower-limb-surgeries
#14
Prabhavathi Ravipati, G Anand Isaac, P Narasimha Reddy, Leela Krishna, T Supritha
BACKGROUND: Spinal anesthesia is used commonly intraoperatively. However, local anesthetics are associated with relatively short duration of action. A number of adjuvants have been used to prolong the postoperative analgesia. OBJECTIVES: To compare efficacy of dexmedetomidine and fentanyl when given intrathecally as an adjuvant to 2.5 ml of 0.75% isobaric ropivacaine. MATERIALS AND METHODS: Sixty selected patients were randomized to receive 2...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928552/comparative-efficacy-of-minimal-concentration-of-racemic-bupivacaine-0-0625-with-fentanyl-and-ropivacaine-0-1-with-fentanyl-for-epidural-labor-analgesia
#15
T N Chethanananda, M R Shashank, N Madhu, J Achyutha, Karna Venkata Siva Kumar
BACKGROUND AND AIMS: This study aims to compare the minimum effective concentration of local anesthetic (LA) bupivacaine and ropivacaine with highly lipid soluble opioids fentanyl for providing optimal labor epidural analgesia. SETTINGS AND DESIGN: The objective of this study was to evaluate the efficacy of racemic bupivacaine 0.0625% and 0.1% of ropivacaine both mixed with 2 μg/ml of fentanyl for epidural labor analgesia in parturients with spontaneous labor and normal fetal heart rate tracing...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928550/evaluating-the-efficacy-of-tramadol-as-an-adjuvant-to-intrathecal-isobaric-levobupivacaine-for-elective-infraumbilical-surgeries
#16
Dewan Roshan Singh, Hajer Mohamed, N Krishnaveni, Kusha Nag
BACKGROUND: Long-acting local anesthetics are used in subarachnoid block to increase the duration of anesthesia. Adjuvants are added to improve the duration of analgesia. SETTINGS: Randomized controlled trial was conducted in the Department of Anesthesiology in a tertiary care hospital. AIMS AND OBJECTIVES: The objective of this study was to evaluate the efficacy of low-dose tramadol as an intrathecal adjuvant to levobupivacaine in terms of duration of analgesia, onset of sensory blockade, onset of motor blockade, and duration of motor blockade...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928113/pdk4-inhibits-cardiac-pyruvate-oxidation-in-late-pregnancy
#17
Laura Liu, Glenn C Rowe, Steven Yang, Jian Li, Federico Damilano, Mun Chun Chan, Wenyun Lu, Cholsoon Jang, Shogo Wada, Michael Morley, Michael Hesse, Bernd K Fleischmann, Joshua Rabinowitz, Saumya Das, Anthony Rosenzweig, Zoltan Arany
Rationale: Pregnancy profoundly alters maternal physiology. The heart hypertrophies during pregnancy, but its metabolic adaptations are not well understood. Objective: To determine the mechanisms underlying cardiac substrate use during pregnancy. Methods and Results: We use here (13)C-glucose, (13)C-lactate, and (13)C-fatty acid tracing analyses to show that hearts in late pregnant mice increase fatty acid uptake and oxidation into the tricarboxylic acid (TCA) cycle, while reducing glucose and lactate oxidation...
September 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28927537/interstitial-telomeric-sequences-in-vertebrate-chromosomes-origin-function-instability-and-evolution
#18
REVIEW
Alejandro D Bolzán
By definition, telomeric sequences are located at the very ends or terminal regions of chromosomes. However, several vertebrate species show blocks of (TTAGGG)n repeats present in non-terminal regions of chromosomes, the so-called interstitial telomeric sequences (ITSs), interstitial telomeric repeats or interstitial telomeric bands, which include those intrachromosomal telomeric-like repeats located near (pericentromeric ITSs) or within the centromere (centromeric ITSs) and those telomeric repeats located between the centromere and the telomere (i...
July 2017: Mutation Research
https://www.readbyqxmd.com/read/28926968/weakening-pin-bone-attachment-in-fish-fillets-using-high-intensity-focused-ultrasound
#19
Martin H Skjelvareid, Svein Kristian Stormo, Kristín Anna Þórarinsdóttir, Karsten Heia
High Intensity Focused Ultrasound (HIFU) can be used for the localized heating of biological tissue through the conversion of sound waves into heat. Although originally developed for human medicine, HIFU may also be used to weaken the attachment of pin bones in fish fillets to enable easier removal of such bones. This was shown in the present study, where a series of experiments were performed on HIFU phantoms and fillets of cod and salmon. In thin objects such as fish fillets, the heat is mainly dissipated at the surfaces...
September 18, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28926938/integrin-activation-contributes-to-lower-cisplatin-sensitivity-in-mv3-melanoma-cells-by-inducing-the-wnt-signalling-pathway
#20
Maria B R Piva, Bastian Jakubzig, Gerd Bendas
BACKGROUND: integrins have been associated with the development of chemotherapy resistant tumour cells, mostly those of hematopoietic origin, by mediating the binding to the extracellular matrix. The relevance for solid tumour cells and the underlying mechanisms remain elusive. METHODS: using MTT assays, we detected the loss in cisplatin sensitivity of human MV3 melanoma cells upon integrin activation. Underlying cellular pathways were evaluated by flow cytometry...
September 16, 2017: Cancers
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