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https://www.readbyqxmd.com/read/28526787/development-of-multi-well-plate-methods-using-pure-cultures-of-methanogens-to-identify-new-inhibitors-for-suppressing-ruminant-methane-emissions
#1
M R Weimar, J Cheung, D Dey, C McSweeney, M Morrison, Y Kobayashi, W B Whitman, V Carbone, L R Schofield, R S Ronimus, G M Cook
Hydrogenotrophic methanogens typically require strictly anaerobic culturing conditions in glass tubes with overpressures of H2 and CO2 that are both time-consuming and costly. To increase the throughput for screening chemical compound libraries, 96-well microtiter plate methods for the growth of a marine (environmental) methanogen Methanococcus maripaludis strain S2 and the rumen methanogen Methanobrevibacter species AbM4 were developed. A number of key parameters (inoculum size, reducing agents for media preparation, duration of assay, inhibitor solvents and culture volume) were optimised to achieve robust and reproducible growth in a high-throughput microtiter plate format...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28526640/zero-profile-spacer-versus-cage-plate-construct-in-anterior-cervical-discectomy-and-fusion-for-multilevel-cervical-spondylotic-myelopathy-a-systematic-review-and-meta-analysis
#2
Min-Ji Tong, Guang-Heng Xiang, Zi-Li He, De-Heng Chen, Qian Tang, Hua-Zi Xu, Nai-Feng Tian
BACKGROUD: Anterior cervical discectomy and fusion (ACDF) with plate-screw construct has been gradually applied for multilevel cervical spondylotic myelopathy (CSM) in recent years. However, long cervical plate was associated with complications including breakage or loosening of plate and screws, trachea-esophageal injury, neurovascular injury, and postoperative dysphagia. To reduce these complications, the zero-profile spacer has been introduced. This meta-analysis was performed to compared the clinical and radiological outcomes of zero-profile spacer versus cage-plate construct for the treatment of multilevel cervical spondylotic myelopathy...
May 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526551/assessment-of-vertical-ridge-augmentation-in-anterior-aesthetic-zone-using-onlay-xenografts-with-titanium-mesh-versus-the-inlay-bone-grafting-technique-a-randomized-clinical-trial
#3
M Mounir, S Mounir, A A Elfetouh, M A Shaker
The aim of this study was to evaluate the final vertical gain at the deficient anterior maxillary alveolar ridges using onlay bone grafts with titanium mesh versus inlay bone grafting. This was a single institutional randomized comparative clinical trial. The study population included 16 patients, with edentulous anterior maxillary alveolar ridges (40 implant sites) who were presented and treated at the Faculty of Oral and Dental Medicine in Cairo University from September 2013 to August 2015. Selected patients were randomly divided into two equal groups...
May 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28526527/cellular-scale-model-of-growth-plate-an-in-silico-model-of-chondrocyte-hypertrophy
#4
H A Castro-Abril, J M Guevara, M A Moncayo, S J Shefelbine, L A Barrera, D A Garzón-Alvarado
The growth plate is the responsible for longitudinal bone growth. It is a cartilaginous structure formed by chondrocytes that are continuously undergoing a differentiation process that starts with a highly proliferative state, followed by cellular hypertrophy, and finally tissue ossification. Within the growth plate chondrocytes display a characteristic columnar organization that potentiates longitudinal growth. Both chondrocyte organization and hypertrophy are highly regulated processes influenced by biochemical and mechanical stimuli...
May 16, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28526422/temporary-ipsilateral-stiff-shoulder-after-operative-fixation-of-distal-radial-fractures
#5
Soo Min Cha, Hyun Dae Shin, Sung Jin Hwang
BACKGROUND: This study was conducted to identify variables affecting the development of temporary stiff shoulder after operative fixation for distal radial fractures (DRF). MATERIALS AND METHODS: The study retrospectively analyzed 167 patients who had undergone internal fixation using volar locking plate for DRF between 2010 and 2013. Group 1 was denoted as the "normal group," and group 2 was denoted as the "stiff shoulder group." Basic demographic factors evaluated included age, sex, bone mineral density (BMD), and the dominancy...
June 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28526307/risk-factors-of-cardiac-device-infection-glove-contamination-during-device-procedures
#6
Isabella Kozon, Sam Riahi, Søren Lundbye-Christensen, Anna Margrethe Thøgersen, Tove Ejlertsen, Dorthe Aaen, Kirsten I Paulsen, Søren Hjortshøj
BACKGROUND: Infections in cardiac implantable electronic devices (CIEDs) constitute a serious complication. We sought to identify contamination of gloves before handling the device in primary and replacement CIED procedures. METHODS: Two groups of 30 patients underwent primary CIED implantation or replacement. Before the device entered the surgical field, surgeon and assistant imprinted their outer gloves on aerobe and anaerobe agar plates, and a wound swab was performed...
May 16, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28526120/a-new-species-of-gambierdiscus-dinophyceae-from-the-south-west-pacific-gambierdiscus-honu-sp-nov
#7
Lesley Rhodes, Kirsty F Smith, Arjun Verma, Belinda G Curley, D Tim Harwood, Sam Murray, Gurjeet S Kohli, Dorothy Solomona, Teina Rongo, Rex Munday, Shauna A Murray
Two isolates of a new tropical, epiphytic dinoflagellate species, Gambierdiscus honu sp. nov., were obtained from macroalgae sampled in Rarotonga, Cook Islands, and from North Meyer Island, Kermadec Islands. Gambierdiscus honu sp. nov. had the common Gambierdiscus Kofoidian plate formula: Po, 3', 6″, 6C?, 6 or 7S, 5‴, 1p and 2⁗. The characteristic morphological features of this species were its relatively small short dorsoventral length and width and the shape of individual plates, in particular the combination of the hatchet-shaped 2' and pentagonal 3' plates and the length to width ratio of the antapical 1p plate...
May 2017: Harmful Algae
https://www.readbyqxmd.com/read/28526115/different-life-cycle-strategies-of-the-dinoflagellates-fragilidium-duplocampanaeforme-and-its-prey-dinophysis-acuminata-may-explain-their-different-susceptibilities-to-the-infection-by-the-parasite-parvilucifera-infectans
#8
Bora Lee, Myung Gil Park
Some marine dinoflagellates form ecdysal cyst (=temporary cysts) as part of their life cycle or under unfavorable growth conditions. Whether the dinoflagellates form ecdysal cysts or not may influence susceptibility to parasitism. In this study, parasite prevalence relative to inoculum size of the parasitoid Parvilucifera infectans zoospores for two dinoflagellate hosts (i.e., Fragilidium duplocampanaeforme and Dinophysis acuminata), which have different life cycle strategies, was examined. Further, susceptibility of cysts to parasitism, encystment signal, duration of encystments, and effects of induced encystment on diel periodicity, using ecdysal cyst-forming F...
May 2017: Harmful Algae
https://www.readbyqxmd.com/read/28525823/development-and-validation-of-a-reversed-phase-hplc-method-for-analysis-of-radiochemical-purity-in-123-i-ibzm
#9
Shiou-Shiow Farn, Yuen-Han Yeh, Chang-Chin Li, Ching-Shiuann Yang, Jenn-Tzong Chen, Chung-Shan Yu, Wuu-Jyh Lin
[(123)I]IBZM is used widely for in vivo imaging of D2 receptors in human brain and shows relatively fast kinetics and a greater susceptibility to synaptic dopamine release than other single-photon emission computed tomography (SPECT) radioligands. A reliable and reversed-phase HPLC method using UV/VIS and radiometric detectors has been developed for qualitative analysis of BZM and IBZM and radiochemical purity in [(123)I]IBZM preparations. The method uses gradient elution on a Zorbax XDB C-18 column with a mobile phase that consists of 10mM 3,3-dimethylglutaric acid (DMGA), pH 7...
April 15, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28525761/impact-of-bioactive-packaging-systems-based-on-evoh-films-and-essential-oils-in-the-control-of-aflatoxigenic-fungi-and-aflatoxin-production-in-maize
#10
Eva M Mateo, José V Gómez, Irene Domínguez, Jose V Gimeno-Adelantado, Rufino Mateo-Castro, Rafael Gavara, Misericordia Jiménez
Aspergillus flavus and A. parasiticus are the most common fungal species associated with aflatoxin (AF) contamination of cereals, especially maize, and other agricultural commodities. AFB1, the most frequent and toxic metabolite, is a powerful hepatotoxic, teratogenic and mutagenic compound. Effective strategies to control these fungal species and AFs in food and feed are required. Active packaging film containing essential oils (EO) is one of the most innovative food packaging concepts. In this study, ethylene-vinyl alcohol (EVOH) copolymer films incorporating EO from Origanum vulgare (ORE), Cinnamomum zeylanicum (CIN) or their major active constituents, carvacrol (CAR) and cinnamaldehyde (CINHO), respectively, were developed and assayed to control growth of A...
May 11, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28525654/molecular-detection-by-analysis-of-the-16s-rrna-gene-of-fecal-coliform-bacteria-from-the-two-korean-apodemus-species-apodemus-agrarius-and-a-peninsulae
#11
M M Rahman, K B Yoon, S J Lim, M G Jeon, H J Kim, H Y Kim, J Y Cho, H M Chae, Y C Park
Wild mouse feces can disseminate zoonotic microorganisms throughout a farm, which is a great threat to human health and can lead to economic loss through contaminated agricultural produce. To assess the microbial communities, especially fecal coliform bacteria, we used two methods. First, we isolated bacterial colonies onto the common media LB (lactose broth) agar, TSA (tryptic soy agar), and MRS (de Man, Rogosa, and Sharpe) agar, and then randomly select colonies from each plate and stocked them to the mother plate for genomic DNA isolation...
May 18, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28525489/minimum-5-year-follow-up-results-for-occipitocervical-fusion-using-the-screw-rod-system-in-craniocervical-instability
#12
Kei Ando, Shiro Imagama, Zenya Ito, Kazuyoshi Kobayashi, Hideki Yagi, Ryuichi Shinjo, Tetsuro Hida, Kenyu Ito, Yoshimoto Ishikawa, Naoki Ishiguro
STUDY DESIGN: Retrospective clinical study. OBJECTIVE: To evaluate the clinical outcome of patients who had undergone occipitocervical (OC) fusion using pedicle screws and rods over a minimum 5-year follow-up. SUMMARY OF BACKGROUND DATA: Few studies have evaluated occipitocervical (OC) fusion using pedicle screws and rods for long-term follow-up. METHODS: Twenty-seven consecutive patients treated underwent posterior OC fusion using pedicle screws and rods over a minimum 5-year follow-up...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525472/a-comparison-of-implants-used-in-open-door-laminoplasty-structural-rib-allografts-versus-metallic-miniplates
#13
Ehsan Tabaraee, Praveen Mummaneni, Amir Abdul-Jabbar, David Shearer, Esha Roy, Beejal Amin, Christopher Ames, Shane Burch, Vedat Deviren, Sigurd Berven, Serena Hu, Dean Chou, Bobby K Tay
STUDY DESIGN: A retrospective case-controlled study. SUMMARY OF BACKGROUND DATA: Open-door laminoplasty has been successfully used to address cervical spondylotic myelopathy and ossification of the posterior longitudinal ligament. Two common implants include rib allograft struts and metallic miniplates. OBJECTIVE: The goals of this study were to compare outcomes, complications, and costs associated with these 2 implants. METHODS: A retrospective review was done on 51 patients with allograft struts and 55 patients with miniplates...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525408/rebound-deformity-after-growth-modulation-in-patients-with-coronal-plane-angular-deformities-about-the-knee-who-gets-it-and-how-much
#14
Lise A Leveille, Ozan Razi, Charles E Johnston
BACKGROUND: With observed success and increased popularity of growth modulation techniques, there has been a trend toward use in progressively younger patients. Younger age at growth modulation increases the likelihood of complete deformity correction and need for implant removal before skeletal maturity introducing the risk of rebound deformity. The purpose of this study was to quantify magnitude and identify risk factors for rebound deformity after growth modulation. METHODS: We performed a retrospective review of all patients undergoing growth modulation with a tension band plate for coronal plane deformity about the knee with subsequent implant removal...
May 18, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28525313/a-tunable-three-dimensional-in-vitro-culture-model-of-growth-plate-cartilage-using-alginate-hydrogel-scaffolds
#15
Alek G Erickson, Taylor D Laughlin, Sarah M Romereim, Catherine N Sargus-Patino, Angela K Pannier, Andrew T Dudley
Defining the final size and geometry of engineered tissues through precise control of the scalar and vector components of tissue growth is a necessary benchmark for regenerative medicine, but it has proved to be a significant challenge for tissue engineers. The growth plate cartilage that promotes elongation of the long bones is a good model system for studying morphogenetic mechanisms because cartilage is composed of a single cell type, the chondrocyte; chondrocytes are readily maintained in culture; and growth trajectory is predominately in a single vector...
May 18, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28525289/high-throughput-phenotyping-of-human-induced-pluripotent-stem-cell-derived-cardiomyocytes-and-neurons-using-electric-field-stimulation-and-high-speed-fluorescence-imaging
#16
Neil J Daily, Zhong-Wei Du, Tetsuro Wakatsuki
Electrophysiology of excitable cells, including muscle cells and neurons, has been measured by making direct contact with a single cell using a micropipette electrode. To increase the assay throughput, optical devices such as microscopes and microplate readers have been used to analyze electrophysiology of multiple cells. We have established a high-throughput (HTP) analysis of action potentials (APs) in highly enriched motor neurons and cardiomyocytes (CMs) that are differentiated from human induced pluripotent stem cells (iPSCs)...
May 19, 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28525285/development-of-plasmonic-cu2o-cu-composite-arrays-as-visible-and-near-infrared-light-driven-plasmonic-photocatalysts
#17
Kosuke Sugawa, Natsumi Tsunenari, Hideyuki Takeda, Saki Fujiwara, Tsuyoshi Akiyama, Jotaro Honda, Shuto Igari, Kyo Tokuda, Naoto Takeshima, Yasuhiro Watanuki, Satoshi Tsukahara, Kouichi Takase, Tetsuo Umegaki, Yoshiyuki Kojima, Nobuyuki Nishimiya, Nobuko Fukuda, Yasuyuki Kusaka, Hirobumi Ushijima, Joe Otsuki
We describe efficient visible- and near-infrared (Vis/NIR) light-driven photocatalytic properties of hybrids of Cu2O and plasmonic Cu arrays. The Cu2O/Cu arrays were prepared simply by allowing to stand a Cu half-shell array in oxygen atmosphere for 3 h, which were prepared by depositing Cu on two-dimensional colloidal crystals with diameters of 543 or 224 nm. The localized surface plasmon resonances (LSPRs) of the arrays were strongly excited at 866 and 626 nm, respectively at which the imaginary part of the dielectric function of Cu is small...
May 19, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28525265/thioarsenate-toxicity-and-tolerance-in-the-model-system-arabidopsis-thaliana
#18
Britta Planer-Friedrich, Tanja Kühnlenz, Dipti Halder, Regina Lohmayer, Nathaniel Wilson, Colleen Rafferty, Stephan Clemens
Thioarsenates form from arsenite under sulfate-reducing conditions, e.g. in rice paddy soils, and are structural analogues to arsenate. Even though rice is one of the most important sources of human arsenic (As) intake, nothing is published about uptake, toxicity, or tolerance of thioarsenates in plants. Experiments using the model system Arabidopsis thaliana showed that monothioarsenate is less toxic than arsenite, but more toxic than arsenate at concentrations >= 25 µM As, reflected in stronger seedlings growth inhibition on agar plates...
May 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28524814/genotoxic-and-cytotoxic-effects-in-exfoliated-buccal-and-nasal-cells-of-chromium-and-cobalt-exposed-electroplaters
#19
Georg Wultsch, Armen Nersesyan, Michael Kundi, Miroslav Mišík, Tahereh Setayesh, Monika Waldherr, Pavel Vodicka, Ludmila Vodickova, Siegfried Knasmüller
Results of a number of studies indicate that electroplaters have increased cancer risks as a consequence of exposure to genotoxic metals such as chromium (VI) and nickel. These effects may be due to induction of damage of the genetic material which plays a key role in the etiology of cancer, and it was found that workers in galvanization factories exhibited increased levels of DNA damage. The aim of the present study was to investigate genetic stability in workers of a bright plating factory who are exposed to chromium (Cr) and cobalt (Co)...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28524771/mercury-levels-in-parturient-and-newborns-from-aveiro-region-portugal
#20
Ana Catarina Alves, Marta S Monteiro, Ana Luísa Machado, Mário Oliveira, Ana Bóia, Ana Correia, Nuno Oliveira, Amadeu M V M Soares, Susana Loureiro
Since the outbreak of methylmercury (MeHg) poisoning in Japan and Iraq, mercury (Hg) is classified as well-established teratogen. The Portuguese region of Aveiro faced some decades ago an environmental Hg contamination due to activities from a chlor-alkali plant. Until now, no apparent evaluation was conducted regarding prenatal exposure to Hg in this area. The main objectives of this study were to: i) assess maternal and fetal exposure to Hg in the Aveiro region using noninvasive biological matrices; ii) examine the influence of variables that may contribute to Hg exposure during pregnancy; and iii) improve knowledge regarding metal accumulation and distribution over the maternal-fetal-placental unit...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
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