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https://www.readbyqxmd.com/read/29035980/incidence-of-symptomatic-pulmonary-embolus-and-deep-vein-thrombosis-after-knee-arthroscopy-in-the-pediatric-and-adolescent-population
#1
Brian C Lau, Jason Jagodzinski, Nirav K Pandya
OBJECTIVE: The incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) after pediatric knee arthroscopy is unknown. The purpose of this study was to determine the incidence of venous thromboembolism (VTE) after knee arthroscopy in the pediatric and adolescent population in a high-volume center. DESIGN: Retrospective cohort study. SETTING: Tertiary care children's hospital. PATIENTS: All patients who underwent arthroscopy of the knee for a sports-related injury by 2 surgeons were reviewed...
October 10, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29035783/radiotracer-investigation-on-the-measurement-of-residence-time-distribution-in-an-ethyl-acetate-reactor-system-with-a-large-recycle-ratio
#2
Arghya Datta, Raj Kumar Gupta, Sunil Goswami, Vijay Kumar Sharma, Haripada Bhunia, Damandeep Singh, Harish Jagat Pant
A radiotracer investigation was carried out on the measurement of residence time distribution (RTD) of process fluid in an industrial-scale ethyl acetate reactor system, which consists of two independent reactors with recirculation and connected in series with each other. Bromine-82 as ammonium bromide was used as the radiotracer for the RTD experiments at different operating conditions. The individual reactors and the overall reactor system were modelled using physically representative phenomenological models comprising of continuously stirred tank reactors (CSTRs)...
September 25, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29035265/hydrothermal-impacts-on-trace-element-and-isotope-ocean-biogeochemistry
#3
C R German, K A Casciotti, J-C Dutay, L E Heimbürger, W J Jenkins, C I Measures, R A Mills, H Obata, R Schlitzer, A Tagliabue, D R Turner, H Whitby
Hydrothermal activity occurs in all ocean basins, releasing high concentrations of key trace elements and isotopes (TEIs) into the oceans. Importantly, the calculated rate of entrainment of the entire ocean volume through turbulently mixing buoyant hydrothermal plumes is so vigorous as to be comparable to that of deep-ocean thermohaline circulation. Consequently, biogeochemical processes active within deep-ocean hydrothermal plumes have long been known to have the potential to impact global-scale biogeochemical cycles...
November 28, 2016: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29035127/healing-potential-of-nanohydroxyapatite-gelatin-and-fibrin-platelet-glue-combination-as-tissue-engineered-scaffolds-in-radial-bone-defects-of-rats
#4
Abdolhamid Meimandi-Parizi, Ahmad Oryan, Hojjat Gholipour
Different biomaterials have been used in orthopedic surgery. Evaluation of biomaterials for bone healing promotion has been a wide area of research of the orthopedic field. Sixty critical size defects of 5 mm long were bilaterally created in the radial diaphysis of 30 rats. The animals were randomly divided into six equal groups as empty defect, autograft, nanohydroxyapatite (nHA), Gelatin (Gel)-nHA, Fibrin-platelet glue (FPG)-nHA and Gel-FPG-nHA groups (n = 10 in each group). Radiographs of each forelimb were taken postoperatively on the 1(st) day and then at the 28(th) and 56(th) days post injury...
October 16, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/29034775/risk-factors-of-early-recurrence-after-curative-hepatectomy-in-hepatocellular-carcinoma
#5
Young Mi Hong, Mong Cho, Ki Tae Yoon, Chong Woo Chu, Kwang Ho Yang, Yong Mok Park, Je Ho Rhu
Early recurrence is common after curative hepatectomy for hepatocellular carcinoma and is associated with poor prognosis. This study aimed to identify risk factors of early recurrence after curative hepatectomy in hepatocellular carcinoma. Overall, 63 patients who underwent curative hepatectomy for hepatocellular carcinoma were enrolled. Patients were divided into the early recurrence group, who developed recurrence within 12 months after hepatectomy (n = 10), and the non-early recurrence group (n = 53)...
October 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29034755/the-alliance-with-expanding-blood-volume-and-correcting-anemia-is-an-effective-therapeutic-measure-for-the-adult-anemia-patients-of-acute-cerebral-infarction
#6
Zunyu Ke, Yu Zhao, Chuanling Wang, Zhiyou Cai
Anemia is closely associated with the occurrence and development of ischemic stroke. However, the clinical association between anemia and ischemic stroke remains unclear. We evaluated the clinical features of adult patients of acute cerebral infarction with anemia, and to provide a reference in the treatment of the anemia patients of acute cerebral infarction, and seek a better treatment different from the other non-anemia causes. We found that anemia has rendered valuable service to neuronal damage and subsequent deterioration of acute cerebral infarction in the adults...
October 15, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29034167/characterization-of-lens-based-photoacoustic-imaging-system
#7
Kalloor Joseph Francis, Bhargava Chinni, Sumohana S Channappayya, Rajalakshmi Pachamuthu, Vikram S Dogra, Navalgund Rao
Some of the challenges in translating photoacoustic (PA) imaging to clinical applications includes limited view of the target tissue, low signal to noise ratio and the high cost of developing real-time systems. Acoustic lens based PA imaging systems, also known as PA cameras are a potential alternative to conventional imaging systems in these scenarios. The 3D focusing action of lens enables real-time C-scan imaging with a 2D transducer array. In this paper, we model the underlying physics in a PA camera in the mathematical framework of an imaging system and derive a closed form expression for the point spread function (PSF)...
December 2017: Photoacoustics
https://www.readbyqxmd.com/read/29031900/resveratrol-improved-detrusor-fibrosis-induced-by-mast-cells-during-progression-of-chronic-prostatitis-in-rats
#8
Yi He, Huizhi Zeng, Yang Yu, Jiashu Zhang, Qi Liu, Bo Yang
To investigate the detrusor fibrosis and urinary dysfunction in chronic prostatitis (CP), and to investigate whether resveratrol can improve the urinary dysfunction and the underlying molecular mechanism. After rat model of CP is established by subcutaneously injecting DPT vaccine, rats are treated with resveratrol. Experiments of bladder pressure and volume test in rats are used to investigate the effect of resveratrol on urinary dysfunction in CP rats. To assess tissue fibrosis, picrosirius red staining is performed...
October 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29031304/coupling-of-the-ring-oven-based-preconcentration-technique-and-surface-enhanced-raman-spectroscopy-application-for-the-determination-of-purine-bases-in-dna
#9
Javier E L Villa, Celio Pasquini, Ronei J Poppi
In this paper, we present the advantages and limitations of the coupling of a ring-oven-based preconcentration technique and surface-enhanced Raman spectroscopy (SERS). Three different methods to promote analyte adsorption on gold nanoparticles using crystal violet as a probe molecule were assessed. The results showed significant improvements in sampling process, selectivity, sensitivity, repeatability (less than ± 10%), and detection limits (nanomolar level) using a sample volume as small as 300 μL. Finally, the standard addition method was successfully applied to the quantitative SERS detection of adenine and guanine in calf thymus DNA after ring-oven preconcentration with a calculated value of (G + C)/(A + T) close to the literature value...
October 23, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29029693/what-can-google-and-wikipedia-can-tell-us-about-a-disease-big-data-trends-analysis-in-systemic-lupus-erythematosus
#10
Savino Sciascia, Massimo Radin
OBJECTIVE: To investigate trends of Internet search volumes linked to Systemic Lupus Erythematosus (SLE), on-going clinical trials and research developments associated to the disease, using Big Data monitoring and data mining. METHODS: We performed a longitudinal analysis based on the large amount of data generated by Google Trends, scientific search tools (SCOPUS, Medline/Pubmed/ClinicalTrails.gov) considering 'SLE', and 'lupus' in a 5-year web-based research. Wikipedia page views were also analysed using WikiTrends and the results were compared with the search volumes generated by Google Trends...
November 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29028291/reproductive-biology-of-aechmea-bracteata-sw-griseb-bromelioideae-bromeliaceae
#11
Manuel Pool-Chalé, Ivón Ramírez-Morillo, Germán Carnevali Fernández-Concha, Claudia T Hornung-Leoni
Individuals of Aechmea bracteata show inflorescences with red scape bracts and odorless, yellow, tubular, diurnal flowers, with closely-arranged sexual organs, producing a large amount of fruits. In order to investigate the reproductive system of this species, a suite of characters were assessed: phenology, floral morphology and biology, nectar production dynamics, and fruit and seed production and germination, as a result of controlled pollination crosses. The study was conducted during two flowering seasons in wild populations in Yucatán, Mexico...
October 13, 2017: Plant Biology
https://www.readbyqxmd.com/read/29021168/functional-ultrasound-imaging-of-brain-activity-in-human-newborns
#12
Charlie Demene, Jérome Baranger, Miguel Bernal, Catherine Delanoe, Stéphane Auvin, Valérie Biran, Marianne Alison, Jérome Mairesse, Elisabeth Harribaud, Mathieu Pernot, Mickael Tanter, Olivier Baud
Functional neuroimaging modalities are crucial for understanding brain function, but their clinical use is challenging. Recently, the use of ultrasonic plane waves transmitted at ultrafast frame rates was shown to allow for the spatiotemporal identification of brain activation through neurovascular coupling in rodents. Using a customized flexible and noninvasive headmount, we demonstrate in human neonates that real-time functional ultrasound imaging (fUSI) is feasible by combining simultaneous continuous video-electroencephalography (EEG) recording and ultrafast Doppler (UfD) imaging of the brain microvasculature...
October 11, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28994464/dosimetric-consequences-of-gold-nanoparticle-clustering-during-photon-irradiation
#13
Charles Kirkby, Brandon Koger, Natalka Suchowerska, David R McKenzie
PURPOSE: The radiation dose enhancement caused by introducing gold nanoparticles (GNP) into cells can increase the dose locally absorbed. A disconnect between experimentally determined survival and dose enhancements predicted by Monte Carlo simulations on macroscopic scales, suggests small-scale energy deposition patterns play an important role in GNP dose enhancement. Clustering of the GNPs could potentially alter small scale energy deposition patterns. Here we use Monte Carlo simulations to quantify energy deposition patterns in the presence of clustered GNPs and address the question of whether clustering of the nanoparticles affects the energy deposition patterns and ultimately cellular response...
October 10, 2017: Medical Physics
https://www.readbyqxmd.com/read/28991824/the-%C3%AE-blocker-esmolol-restores-the-vascular-waterfall-phenomenon-after-acute-endotoxemia
#14
Wei Du, Dawei Liu, Yun Long, Xiaoting Wang
BACKGROUND: A vascular waterfall occurs when the critical closing pressure is greater than the mean systemic filling pressure. Because the waterfall phenomenon likely exists in the microcirculation, β1-receptor blockers such as esmolol could have some effect on microcirculation and vascular waterfall. OBJECTIVES: To determine whether a vascular waterfall exists during septic shock and to assess the effects of vasopressors and β-blockers on vascular waterfall. DESIGN: Sixteen mongrel dogs were mounted with ultrasonic flow probes to measure renal blood flow...
October 6, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28989807/red-blood-cell-distribution-width-and-ischaemic-stroke
#15
REVIEW
Gang-Hua Feng, Hai-Peng Li, Qiu-Li Li, Ying Fu, Ren-Bin Huang
The red blood cell distribution width (RDW) is a measure of red blood cell (RBC) size heterogeneity, which is easily calculated by dividing the SD of erythrocyte volumes for the mean corpuscular volume. Recent reporter suggested that, besides haematological diseases and anaemia, many human disorders may be closely associated with the elevated RDW. A literature review has revealed the RDW may be closely related to the development of ischaemic stroke, carotid artery atherosclerosis and cerebral embolism. Higher RDW could independently predict adverse outcomes in patients in these conditions...
September 2017: Stroke and Vascular Neurology
https://www.readbyqxmd.com/read/28989762/adsorption-and-movement-of-water-by-skin-of-the-australian-thorny-devil-agamidae-moloch-horridus
#16
Philipp Comanns, Falk J Esser, Peter H Kappel, Werner Baumgartner, Jeremy Shaw, Philip C Withers
Moisture-harvesting lizards, such as the Australian thorny devil Moloch horridus, have remarkable adaptations for inhabiting arid regions. Their microstructured skin surface, with channels in between overlapping scales, enables them to collect water by capillarity and passively transport it to the mouth for ingestion. We characterized this capillary water transport for live thorny devils using high-speed video analyses. Comparison with preserved specimens showed that live lizards are required for detailed studies of skin water transport...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28989304/the-problem-of-camouflaging-via-mirror-reflections
#17
Alexander Plakhov
This work is related to billiards and their applications in geometric optics. It is known that perfectly invisible bodies with mirror surface do not exist. It is, therefore, natural to search for bodies that are, in a sense, close to invisible. We introduce a visibility index of a body measuring the mean angle of deviation of incident light rays, and derive a lower estimate for this index. This estimate is a function of the body's volume and of the minimal radius of a ball containing the body. This result is far from being final and opens a possibility for further research...
September 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28989237/lipofilling-effects-after-breast-cancer-surgery-in-post-radiation-patients-an-analysis-of-results-and-algorithm-proposal
#18
Manuel Debald, Thomas Pech, Christina Kaiser, Mignon-Denise Keyver-Paik, Gisela Walgenbach-Bruenagel, Joerg C Kalff, Walther Kuhn, Klaus J Walgenbach
BACKGROUND: Lipofilling or autologous fat transfer is an established technique in plastic surgery. Herein, we describe the lipofilling effects after implant-based breast reconstruction in post-radiation patients and propose an algorithm for indication of lipofilling. METHODS: Forty patients with a history of breast cancer were included in this retrospective analysis. Patients had undergone either breast conserving therapy or mastectomy. Twenty-six patients underwent additional radiation therapy...
2017: European Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28988519/effect-of-unilateral-nephrectomy-on-urinary-angiotensinogen-levels-in-living-kidney-donors-1-year-follow-up-study
#19
Zeynep Kendi Celebi, Ahmet Peker, Sim Kutlay, Senem Kocak, Acar Tuzuner, Sehsuvar Erturk, Kenan Keven, Sule Sengul
BACKGROUND: Urinary angiotensinogen (uAGT) has recently been proposed as a marker of kidney injury and activated intrarenal renin-angiotensin system. We investigated the effects of living donor nephrectomy on uAGT levels, blood pressure, estimated glomerular filtration rate, proteinuria and compensatory hypertrophy in the remaining kidney of living kidney donors. METHODS: Twenty living kidney donors were included in the study and followed for 1 year. uAGT levels were measured with enzyme-linked immunosorbent assay preoperatively and postoperatively at the 15th day, 1, 6 and 12 months...
October 2017: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28987568/short-term-effects-of-various-ozone-metrics-on-cardiopulmonary-function-in-chronic-obstructive-pulmonary-disease-patients-results-from-a-panel-study-in-beijing-china
#20
Hongyu Li, Shaowei Wu, Lu Pan, Junhui Xu, Jiao Shan, Xuan Yang, Wei Dong, Furong Deng, Yahong Chen, Masayuki Shima, Xinbiao Guo
BACKGROUND: Short-term exposure to ambient air pollution has been associated with lower pulmonary function and higher blood pressure (BP). However, controversy remains regarding the relationship between ambient multiple daily ozone (O3) metrics and cardiopulmonary health outcomes, especially in the developing countries. OBJECTIVES: To investigate and compare the short-term effects of various O3 metrics on pulmonary function, fractional exhaled nitric oxide (FeNO) and BP in a panel study of COPD patients...
October 5, 2017: Environmental Pollution
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