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https://www.readbyqxmd.com/read/28647584/transforaminal-lumbar-interbody-fusion-tlif-versus-posterior-lumbar-interbody-fusion-plif-in-lumbar-spondylolisthesis-a-systematic-review-and-meta-analysis
#1
REVIEW
Suzanne L de Kunder, Sander Mj van Kuijk, Kim Rijkers, Inge Jmh Caelers, Wouter Lw van Hemert, Rob A de Bie, Henk van Santbrink
BACKGROUND CONTEXT: Transforaminal lumbar interbody fusion (TLIF) and posterior lumbar interbody fusion (PLIF) are both frequently used as surgical treatment for lumbar spondylolisthesis. Due to the unilateral transforaminal route to the intervertebral space used in TLIF, opposed to the bilateral route used in PLIF, TLIF could be associated with fewer complications, shorter duration of surgery, and less blood loss, while effectiveness of both techniques on back and/or leg pain is equal...
June 21, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28646774/observations-of-black-carbon-aerosols-characteristics-over-an-urban-environment-radiative-forcing-and-related-implications
#2
Samina Bibi, Khan Alam, Farrukh Chishtie, Humera Bibi, Said Rahman
With observations of black carbon (BC) aerosol concentrations, optical and radiative properties were obtained over the urban city of Karachi during the period of March 2006-December 2008. BC concentrations were continuously measured using an Aethalometer, while optical and radiative properties were estimated through the Optical Properties of Aerosols and Clouds (OPAC) and Santa Barbra DISORT Atmospheric Radiative Transfer (SBDART) models, respectively. For the study period, the measured BC concentrations were higher during January, February and November, while lower during May, June, July and August...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28641732/rehabilitation-of-symptomatic-atraumatic-degenerative-rotator-cuff-tears-a-clinical-commentary-on-assessment-and-management
#3
Sarah Bleichert, Genevieve Renaud, Joy MacDermid, Lyn Watson, Ken Faber, Ross Lenssen, Marie Saulnier, Paul Phillips, Tyler Evans, Jackie Sadi
STUDY DESIGN: Clinical Commentary. INTRODUCTION: Atraumatic rotator cuff (RC) disease, is one of the most common cause of shoulder pain, which encompasses a continuum from tendinopathy to full thickness cuff tears. Extrinsic, intrinsic and environmental factors have been implicated in the pathophysiology of this disorder, affecting the clinical presentation of symptoms including pain and irritability. Successful rehabilitation of symptomatic atraumatic degenerative rotator cuff (SADRC) tears must address the underlying mechanisms causing dysfunction and correct modifiable factors...
April 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28636346/halogenated-flame-retardants-in-predator-and-prey-fish-from-the-laurentian-great-lakes-age-dependent-accumulation-and-trophic-transfer
#4
Guanyong Su, Robert J Letcher, Daryl McGoldrick, Sean M Backus
The identification, persistence, accumulation and trophic transfer of 25 polybrominated diphenyl ether (PBDE) congeners, 23 non-PBDE halogenated flame retardants (NPHFRs), 4 polybrominated-diphenoxybenzenes (PB-DiPhOBzs) and 6 methoxylated (MeO-) PB-DiPhOBzs were investigated in predator and prey fish collected in 2010 from sites in the North American Great Lakes of Ontario (n=26) and Erie (n=39). Regardless of locations or species, 20 PBDEs and 12 NPHFRs were quantifiable in at least one of the 65 analyzed samples, and polybrominated-1,4-diphenoxybenzenes (PB-DiPhOBzs) and MeO-PB-DiPhOBzs were not detectable in any of analyzed samples...
June 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28634756/a-high-throughput-targeted-and-non-targeted-method-for-the-analysis-of-microcystins-and-anatoxin-a-using-on-line-solid-phase-extraction-coupled-to-liquid-chromatography-quadrupole-time-of-flight-high-resolution-mass-spectrometry
#5
Xavier Ortiz, Eva Korenkova, Karl J Jobst, Karen A MacPherson, Eric J Reiner
Microcystins are cyclic heptapeptide hepatotoxins produced by cyanobacteria in freshwater. Sample preparation for the analysis of these cyanotoxins in water from algal blooms can take up to several days due to the matrix complexity and the low detection limits required to comply with current legislation. Moreover, there is a large number of unknown microcystins that could potentially exist in the environment resulting from different amino acid substitutions into the microcystin skeletal structure. To tackle these problems, the present study involved the development of a high throughput method based on on-line solid phase extraction coupled to liquid chromatography that could provide quantitative results for 12 microcystin variants (LR, YR, RR, HtyR, HilR, WR, LW, LA, LF, LY, Dha(7)-LR, and Dha(7)-RR) and anatoxin-A in less than 3 h with detection limits between 0...
June 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28622155/triad-ix-can-a-patient-testimonial-safely-help-ensure-prehospital-appropriate-critical-versus-end-of-life-care
#6
Ferdinando Mirarchi, Christopher Cammarata, Timothy E Cooney, Kristin Juhasz, Stanley A Terman
OBJECTIVE: The present study sought to assess the clarity of Physician Orders for Life-Sustaining Treatment (POLST) or Living Will (LW) documents alone or in combination with a video message/testimonial (VM). METHODS: Emergency medical services (EMS) personnel responded to survey questions about the meaning of stand-alone POLST and LW documents and those used in conjunction with emergent care scenarios. Personnel were randomized to receive documents only or documents with VM...
June 16, 2017: Journal of Patient Safety
https://www.readbyqxmd.com/read/28614341/1%C3%A2-%C3%A2-ghz-inp-on-chip-monolithic-extended-cavity-colliding-pulse-mode-locked-laser
#7
R Guzmán, C Gordon, L Orbe, G Carpintero
A record low-repetition rate from an on-chip monolithic InP extended cavity colliding-pulse mode-locked laser is experimentally reported. The device, fabricated in generic InP-based active-passive integration technology, makes use of integrated mirrors to enable its use as a building block within a photonic integrated circuit. This structure allows us to generate an electrical frequency comb with mode spacing of 1 GHz, determined by the 40.5 mm long resonator. Passive and hybrid mode-locking regime conditions are experimentally demonstrated...
June 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28608735/hearing-preservation-does-electrode-choice-matter
#8
Leila J Mady, Daniel C Sukato, Jenifer Fruit, Catherine Palmer, Yael Raz, Barry E Hirsch, Andrew A McCall
Objective Evaluate if electrode design affects hearing preservation (HP) following cochlear implantation (CI) with full-length electrodes. Study Design Case series with chart review. Setting Tertiary referral academic center. Subjects and Methods Forty-five adults with low-frequency hearing (≤85 dB at 250 and 500 Hz) who underwent unilateral CI with full-length electrode arrays made by 1 manufacturer were included. HP was calculated with (1) mean low-frequency pure-tone average (LFPTA) at 250 and 500 Hz (MEAN method), (2) a percentile method across the audiometric frequency spectrum generating an S-value (HEARRING method), and (3) functional if hearing remained ≤85 dB at 250 and 500 Hz...
June 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28606569/dual-energy-x-ray-absorptiometry-metabolic-maps-to-resting-energy-expenditure-estimation-and-body-size-dependence-in-brazilian-young-men
#9
Juliano Henrique Borges, Raquel David Langer, Vagner Xavier Cirolini, Mauro Alexandre Páscoa, Gil Guerra-Júnior, Ezequiel Moreira Gonçalves
OBJECTIVES: The model most suitable for estimating resting energy expenditure (REE) using dual-energy X-ray absorptiometry (DXA) metabolic maps is not known; moreover, the applicability in individuals with different body sizes also is uncertain. The aim of this study was to test the accuracy of REE estimation from models of DXA metabolic maps with four, five, and six tissue-organ components in young men, stratified by body size. METHODS: We studied 52 young men between the ages of 18 and 29 y...
July 2017: Nutrition
https://www.readbyqxmd.com/read/28604253/polybrominated-diphenyl-ethers-pbdes-in-u-s-meat-and-poultry-2012-2013-levels-trends-and-estimated-consumer-exposures
#10
Sara J Lupton, Heldur Hakk
Polybrominated diphenyl ethers (PBDEs) are a class of brominated flame retardants whose use has contaminated foods and caused subsequent human exposures. To address the issue of possible human exposure, samples from a 2012-13 U.S. meat and poultry (beef, pork, chicken, turkey) study were analyzed for seven PBDEs. The mean summed concentrations of the 7 BDE congeners (ΣPBDE) from beef, pork, chicken, and turkey were 0.40, 0.36, 0.19, and 0.76 ng/g lipid weight (lw). The range of ΣPBDEs for all meat classes was 0...
June 12, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28602183/analysis-of-trace-microcystins-in-vegetables-using-matrix-solid-phase-dispersion-followed-by-high-performance-liquid-chromatography-triple-quadrupole-mass-spectrometry-detection
#11
Zong-Yao Qian, Zhi-Gang Li, Jian Ma, Ting-Ting Gong, Qi-Ming Xian
A selective and sensitive method for the simultaneous determination of five common microcystins (MC-LR, -RR, -YR, -LW, -LF) in various vegetables was established using Matrix Solid-Phase Dispersion (MSPD) followed by high performance liquid chromatography-mass spectrometry detection. To optimize the pretreatment procedure for extracting the microcystins from three vegetable matrices (tomato, cucumber and spinacia, which represented different colors), Box-Behnken design was employed to optimize the main factors affecting the extraction efficiency, including sample/dispersant mass ratio, as well as the proportion mixture dispersant and the volumes of solvent...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28599579/forced-air-pre-warming-prevents-peri-anaesthetic-hypothermia-and-shortens-recovery-in-adult-rats
#12
C J Schuster, D S J Pang
General anaesthesia disrupts thermoregulation in mammals, which can cause hypothermia. Decreases in core body temperature of 1℃ cause significant postoperative complications in humans, and peri-anaesthetic hypothermia in mice increases data variability, which can potentially increase animal use. In rats, the impact of different temperature management strategies on the incidence and severity of hypothermia, and the accuracy of different temperature measurement methods, is unknown. Eighteen adult male and female SD rats were block-randomized to one of three treatment groups: no-warming (NW), limited-warming (LW, heat pad during anaesthesia), and pre-warming (PW, warm air exposure before anaesthesia, followed by heat pad)...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28599207/mercury-and-persistent-organic-pollutants-in-native-and-invading-forage-species-of-the-canadian-arctic-consequences-for-food-web-dynamics
#13
Sara Pedro, Aaron T Fisk, Gregg T Tomy, Steven H Ferguson, Nigel E Hussey, Steven T Kessel, Melissa A McKinney
Contaminant dynamics within Arctic marine food webs may be altered through the climate-driven northward invasions of temperate/boreal species. Here, we compare tissue concentrations of total mercury (THg) and legacy and emerging persistent organic pollutants (POPs) in native versus invading forage species sampled from 2012 to 2014 near Arviat, Clyde River, and Resolute Bay, NU, representing, low, mid- and high eastern Canadian Arctic regions, respectively. Concentrations of THg, legacy Σ-polychlorinated biphenyls (ΣPCB) and Σ-organochlorine (ΣOC) pesticides were detected in all forage species, whereas emerging halogenated flame retardants were detected in only a few individuals...
June 6, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28595256/evaluation-of-cochlear-duct-length-computations-using-synchrotron-radiation-phase-contrast-imaging
#14
Robert W Koch, Mai Elfarnawany, Ning Zhu, Hanif M Ladak, Sumit K Agrawal
HYPOTHESIS: Evaluation of cochlear duct length (CDL) using novel imaging techniques will help improve the accuracy of existing CDL equations. BACKGROUND: Various relationships relating A value measured from a patient's computed tomography scan and CDL have been proposed to aid in preoperative electrode selection and frequency mapping. METHODS: Ten cadaveric temporal bones were scanned using synchrotron radiation phase-contrast imaging. Reference CDL values were calculated by placing points representing the organ of Corti (OC), lateral wall (LW), and electrode location (I) on the synchrotron radiation phase-contrast imaging slices along the length of the cochlea...
July 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28590831/effects-of-testosterone-administration-on-liver-structure-and-function-in-aging-rats
#15
Ricardo Aparecido Baptista Nucci, Ana Caroline de Souza Teodoro, Walter Krause Neto, Wellington de Assis Silva, Romeu Rodrigues de Souza, Carlos Alberto Anaruma, Eliane Florencio Gama
Aging males have a decrease in testosterone levels, by which the testosterone treatment may influence in a negatively fashion the liver. AIM: This study aimed to analyze the effects of aging with or without testosterone administration on the liver components of animals. METHODS: Wistar rats were divided into three groups: 20 months' group (G20), 24 months' group (G24), group treated with testosterone for 16 weeks (GT). All groups were sacrificed at 24 months except for G20 that was sacrificed at 20 months...
June 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28566680/dibutyl-phthalate-induced-testicular-dysgenesis-originates-after-seminiferous-cord-formation-in-rats
#16
Nathália L M Lara, Sander van den Driesche, Sheila Macpherson, Luiz R França, Richard M Sharpe
Administration of dibutyl phthalate (DBP) to pregnant rats causes reproductive disorders in male offspring, resulting from suppression of intratesticular testosterone, and is used as a model for human testicular dysgenesis syndrome (TDS). DBP exposure in pregnancy induces focal dysgenetic areas in fetal testes that appear between e19.5-e21.5, manifesting as focal aggregation of Leydig cells and ectopic Sertoli cells (SC). Our aim was to identify the origins of the ectopic SC. Time-mated female rats were administered 750 mg/kg/day DBP in three different time windows: full window (FW; e13...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28551562/pyrethroid-insecticides-in-wild-bird-eggs-from-a-world-heritage-listed-park-a-case-study-in-do%C3%A3-ana-national-park-spain
#17
Cayo Corcellas, Ana Andreu, Manuel Máñez, Fabrizio Sergio, Fernando Hiraldo, Ethel Eljarrat, Damià Barceló
Recent studies demonstrated that the common pyrethroid insecticides are present in aquatic biota tissues. In this study, 123 samples of unhatched eggs of 16 wild bird species collected from 2010 to 2012 in Doñana National and Natural Park were analysed to determine 13 pyrethroids. This study represents the first time that pyrethroids are detected in tissues of terrestrial biota, 93% of these samples being positive to those pollutants. Levels of total pyrethroids ranged from not detected to 324 ng g(-1) lw...
May 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28545869/evaluation-of-marginal-fit-of-single-implant-supported-metal-ceramic-crowns-prepared-by-using-presintered-metal-blocks
#18
Barış Paşalı, Duygu Saraç, Necati Kaleli, Yakup Sinasi Saraç
STATEMENT OF PROBLEM: Recently, presintered metal blocks for nonprecious and precious metal implant-supported restorations have gained popularity in computer-aided design and computer-aided manufacturing (CAD-CAM) systems. However, few studies have evaluated the marginal discrepancy of implant-supported restorations made with these new alloy systems. PURPOSE: The purpose of this in vitro study was to compare the milling-sintering method with the lost-wax and milling methods in terms of the marginal fit of implant-supported metal-ceramic restorations...
May 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28525835/emerging-and-legacy-flame-retardants-in-uk-human-milk-and-food-suggest-slow-response-to-restrictions-on-use-of-pbdes-and-hbcdd
#19
Fang Tao, Mohamed Abou-Elwafa Abdallah, Danielle C Ashworth, Philippa Douglas, Mireille B Toledano, Stuart Harrad
The legacy flame retardants (LFRs) polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD), together with six emerging flame retardants (EFRs) were measured in United Kingdom (UK) human milk collected in 2010 (n=25) and 2014-15 (n=10). These data are the first report of the presence of EFRs in UK human milk. The most abundant EFR was β-tetrabromoethylcyclohexane (DBE-DBCH) (average=2.5ng/g lw; geometric mean=1.5ng/g lw), which is comparable to the concentrations of the most abundant LFRs i...
May 16, 2017: Environment International
https://www.readbyqxmd.com/read/28488923/the-effects-of-life-review-interventions-on-spiritual-well-being-psychological-distress-and-quality-of-life-in-patients-with-terminal-or-advanced-cancer-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#20
Chong-Wen Wang, Amy Ym Chow, Cecilia Lw Chan
BACKGROUND: Life review interventions have been used to alleviate psycho-spiritual distress in people near the end of life. However, their effectiveness remains inconclusive. AIM: To evaluate the effects of therapeutic life review on spiritual well-being, psychological distress, and quality of life in patients with terminal or advanced cancer. DESIGN: A systematic review according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology...
May 1, 2017: Palliative Medicine
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