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Monica S Vavilala, Silvia B Lujan, Qian Qiu, Michael J Bell, Nicolás M Ballarini, Nahuel Guadagnoli, María Alejandra Depetris, Gabriela A Faguaga, Gloria M Baggio, Leonardo O Busso, Mirta E García, Osvaldo R González Carrillo, Paula L Medici, Silvia S Sáenz, Elida E Vanella, Carly K Farr, Gustavo J Petroni
OBJECTIVE: Little is known about the critical care management of children with traumatic brain injury (TBI) in low middle income countries. We aimed to identify indicators of intensive care unit (ICU) treatments associated with favorable outcomes in Argentine children with severe TBI. METHODS: We conducted a secondary analysis of data from patients previously enrolled in a prospective seven center study of children with severe TBI who were admitted to an ICU in one of the seven study centers...
2017: PloS One
Mattias Pettersson, Jean Pettersson, Margareta Molin Thorén, Anders Johansson
In the present study, amount of titanium (Ti) released into the surrounding bone during placement of implants with different surface structure was investigated. Quantification of Ti released during insertion from three different implants was performed in this ex vivo study. Jaw bone from pigs was used as model for installation of the implants and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) was used for analysis of the released Ti. Implant surface were examined with scanning electron microscopy (SEM), before and after the placement into the bone...
2017: Acta Biomaterialia Odontologica Scandinavica
Jie Ren, Yang-Guo Xie, Yi-Gong Guo, Sheng-Lan Zhu, Hui-Zi Jin, Wei-Dong Zhang
One unusual metal complex of cadinane sesquiterpene alkaloid (1), one new cadinane sesquiterpene alkaloid (2) and two new neolignan glycosides (3-4) along with six known cadinane sesquiterpene derivatives (5-10), nineteen known phenolic glycosides (11-29) were isolated from the aerial parts of Alangium alpinum. Structures of new crystals of metal complex were characterized by X-Ray diffraction and ICP-AES analysis. Other new compounds were elucidated by combined use and detailed analysis of HR-ESIMS, 1D and 2D NMR and CD spectroscopic method...
December 11, 2017: Fitoterapia
Frederick Adam Zeiler, Joseph Donnelly, Peter Smieleweski, David Menon, Peter John Hutchinson, Marek Czosnyka
To compare ICP derived cerebrovascular reactivity indices in their ability to predict 6-month outcome, and to determine/compare critical thresholds related to outcome for each index, in adult non-craniectomized traumatic brain injury (TBI). Using a retrospective cohort of non-decompressive craniectomy (non-DC) TBI patients, we performed univariate and multivariate binary logistic regression outcome analysis of: pressure reactivity index (PRx), pulse amplitude index (PAx) and a newly described index calculated as the Regression coefficient between intracranial pressure (ICP) waveform Amplitude and Cerebral perfusion pressure RAC (CPP)...
December 14, 2017: Journal of Neurotrauma
Alejandro Yopasá Arenas, Gustavo de Souza Pessôa, Marco Aurélio Zezzi Arruda, Anne Hélène Fostier
Experiments in saturated soil columns were performed to investigate the transport and retention of 25 nm and 75 nm silver nanoparticles stabilized with polyvinylpyrrolidone (PVP-AgNPs) in two Brazilian soils (sandy and sandy-clay). The normalized concentration of the PVP-AgNPs was obtained through a flow injection analysis method based on the surface plasmon ressonance effect of the metallic nanoparticles. The use of the ultraviolet-visible spectroscopy (UV-Vis) allows a rapid and low-cost analysis. The obtained breakthrough curves (BCs) were modeled with a deterministic model of solute transport in steady conditions of water flow and considering two regions of non-physical equilibrium; this model allowed the determination of the hydrodynamic parameters...
December 5, 2017: Chemosphere
Cherith M Campbell-Bell, Anthony A Birch, Dario Vignali, Diederik O Bulters, Robert J Marchbanks
OBJECTIVE Evoked tympanic membrane displacement (TMD) is a non-invasive technique for assessing intracranial pressure (ICP). The aim of this study was to define reference intervals (RIs) in the healthy population. Approach Measurements were made in 154 healthy adults. Results were quantified by Vm which is the most frequently described TMD measurement. Distributions were determined for sitting and supine posture. Differences between right and left ears were explored using a Wilcoxon signed-rank test...
December 14, 2017: Physiological Measurement
Jie Yu, Zhichao Zhang, Quanfang Lu, Duixiong Sun, Shuwen Zhu, Xiaomin Zhang, Xing Wang, Wu Yang
An atomic emission spectrometer (AES) based on a novel atmospheric pressure liquid cathode glow discharge (LCGD) as one of the most promising miniaturized excitation sources has been developed, in which the glow discharge is produced between a needle-like Pt anode and the electrolyte (as cathode) overflowing from a quartz capillary. Lower energy consumption (<50 W) and higher excitation efficiency can be realized by point discharge of the needle-like Pt. The miniaturized LCGD seems particularly well suited to rapid and high-sensitivity determination of K, Ca, Na, and Mg in salt mines samples...
2017: Journal of Analytical Methods in Chemistry
Teodor Svedung Wettervik, Samuel Lenell, Lena Nyholm, Tim Howells, Anders Lewén, Per Enblad
BACKGROUND: Two randomised controlled trials (RCTs) of decompressive craniectomy (DC) in traumatic brain injury (TBI) have shown poor outcome, but there are considerations of how these protocols relate to real practice. The aims of this study were to evaluate usage and outcome of DC and thiopental in a single centre. METHOD: The study included all TBI patients treated at the neurointensive care unit, Akademiska sjukhuset, Uppsala, Sweden, between 2008 and 2014. Of 609 patients aged 16 years or older, 35 treated with DC and 23 treated with thiopental only were studied in particular...
December 12, 2017: Acta Neurochirurgica
YaRu Zheng, LiFang Huang, YiPing Zhao, JunJie Wang, XiaoBo Zheng, Wei Huang, Brendan Geraghty, QinMei Wang, ShiHao Chen, FangJun Bao, Ahmed Elsheikh
To assess repeatability of corneal tomography in successive measurements by Pentacam in keratoconus (KC) and normal eyes based on the Iterative Closest Point (ICP) algorithm. The study involved 143 keratoconic and 143 matched normal eyes. ICP algorithm was used to estimate six single and combined misalignment (CM) parameters, the root mean square (RMS) of the difference in elevation data pre (PreICP-RMS) and post (PosICP-RMS) tomography matching. Corneal keratometry, expressed in the form of M, J0 and J45 (power vector analysis parameters), was used to evaluate the effect of misalignment on corneal curvature measurements...
December 12, 2017: Scientific Reports
Bijayalakshmi Devi Nongmaithem, Peter Mouatt, Joshua Smith, David Rudd, Michael Russell, Caroline Sullivan, Kirsten Benkendorff
Muricidae molluscs are the source of a valuable purple dye that was traded as a luxury item in the Mediterranean region and by the late Byzantine was reserved for royalty and priests. Less well known is the use of muricid opercula in sacred incense and traditional medicines, although they are still used as rare ingredients today. This study provides the first chemical assessment of opercula from Muricidae, based on several traditional preparation procedures. Chemical analysis of opercula smoke revealed aromatic phenols, which act as fragrance stabilisers and produce a "medicinal" odour...
December 12, 2017: Scientific Reports
Michael Levi, Camilla Hjelm, Florencia Harari, Marie Vahter
No abstract text is available yet for this article.
December 9, 2017: Clinical Biochemistry
Naoto Hieda, Mariko Nagatoshi, Yoshihiro Ikeuchi, Yoshinori Iga, Tetsuhisa Goto
AOAC Official Method2015.06 is not applicable for infant formula without selenium addition because of lack of sensitivity. In addition, Method 2015.06 specifies hydrogen gas as the cell gas of inductively coupled plasma (ICP)-MS instruments. There are only a few manufacturers who have formally adopted hydrogen gas. To expand the applicability of Method 2015.06 for infant formulas with lower selenium content and for ICP-MS instruments that do not use hydrogen gas as the cell gas, we modified the conditions of Method 2015...
December 13, 2017: Journal of AOAC International
Nadiye Koroglu, Ahmet Tayyar, Esra Nur Tola, Gonca Yetkin Yildirim, Ilkbal Temel Yuksel, Berna Aslan Cetin, Ismail Dag, Deniz Kanber Acar
OBJECTIVES: To investigate liver-derived plasma protein fetuin B levels in healthy pregnant women and pregnant women with intrahepatic cholestasis of pregnancy (ICP). MATERIALS AND METHODS: Forty women with ICP and 40 healthy pregnant women were included in this cross-sectional study. The serum fetuin B levels of these patients were analyzed. The patients were followed up to delivery. RESULTS: Maternal age, gravida, parity, BMI at assessment, and gestational age at blood sampling were similar between the ICP and control groups (p > ...
December 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
Monica Khurana, Ellen B Fung, Elliott P Vichinsky, Elizabeth C Theil
Transfusion-independent patients with thalassemia intermedia (TI) develop fatal iron overload from excessive iron absorption triggered by ineffective erythropoiesis. More information about iron pharmacokinetics and nonheme, dietary iron absorption in such patients is needed to optimize management. To obtain more information, different forms of supplemental nonheme iron sources (ferritin and ferrous sulfate) were compared in 4 TI (hemoglobin <9 g/dL) and 6 control (hemoglobin 12-16 g/dL) patients. Serial serum iron concentrations were measured during the 24 hours following consumption of 1 mg/kg of elemental iron as ferritin or ferrous sulfate...
December 12, 2017: Pediatric Hematology and Oncology
Martin Wiemann, Antje Vennemann, Franziska Blaske, Michael Sperling, Uwe Karst
The distribution of silver (Ag) into remote organs secondary to the application of Ag nanoparticles (Ag-NP) to the lung is still incompletely understood and was investigated in the rat with imaging methods. Dose-finding experiments were carried out with 50 nm- or 200 nm-sized polyvinyl pyrrolidine (PVP)-coated Ag-NP using alveolar macrophages in vitro and female rats, which received Ag-NP via intratracheal instillation. In the main study, we administered 37.5-300 µg per rat lung of the more toxic Ag50-PVP and assessed the broncho-alveolar lavage fluid (BALF) for inflammatory cells, total protein and fibronectin after three and 21 days...
December 12, 2017: Nanomaterials
Nozomi Tatsuta, Kunihiko Nakai, Miyuki Iwai-Shimada, Futoshi Mizutani, Katsuyuki Murata, Yoichi Chisaki, Hiroshi Satoh
BACKGROUND: Neuropsychological effects of considerably low levels of lead exposure are observed in children, and a reliable and possibly painless technique that can detect such levels is required for the assessment of such exposure. We examined whether the blood lead (BPb) concentrations obtained from the earlobe were as valid and useful as those from the median cubital vein. METHODS: Paired blood samples were collected from the earlobe and cubital vein of 112 Japanese participants occupationally unexposed to lead, and the BPb levels were determined using ICP-MS...
December 11, 2017: Environmental Health and Preventive Medicine
Michael J Moore, Joshua Wofford, Andrew Dancis, Paul Alan Lindahl
Mrs3 and Mrs4 are mitochondrial inner membrane proteins that deliver an unidentified cytosolic iron species into the matrix for use in iron-sulfur-cluster (ISC) and heme biosynthesis. The Mrs3/4 double-deletion strain (ΔΔ) grew slowly in iron-deficient glycerol/ethanol medium but recovered to WT rates in iron-sufficient medium. ΔΔ cells grown under both iron-deficient and iron-sufficient respiring conditions accumulated large amounts of iron relative to WT cells, indicating iron homeostatic dysregulation regardless of nutrient iron status...
December 11, 2017: Biochemistry
Alexander Haosi Sun, John A Persing
BACKGROUND: Craniosynostosis, or a premature fusion of 1 or more cranial vault sutures, results in characteristic head shape deformities. In previous reports, an osseous prominence at the anterior fontanelle has been suggestive of adjacent suture fusion and local elevation in intracranial pressure (ICP). This prominence has been termed the "volcano" sign, and has been described in the anterior fusion of the sagittal suture and serves as an indication for surgery. METHODS: Two patients presented for head shape evaluation with mild metopic ridging and anterior fontanellar osseous convexities consistent with the volcano sign...
December 7, 2017: Journal of Craniofacial Surgery
Wenqing Shi, Yuhan Zeng, Cheng Zhu, Yucheng Xiao, Theodore R Cummins, Jianghui Hou, Lane A Baker
Integration of dual-barrel membrane patch-ion channel probes (MP-ICPs) to scanning ion conductance microscopy (SICM) holds promise of providing a revolutionized approach of spatially resolved chemical sensing. A series of experiments are performed to further the understanding of the system and to answer some fundamental questions, in preparation for future developments of this approach. First, MP-ICPs are constructed that contain different types of ion channels including transient receptor potential vanilloid 1 and large conductance Ca2+ -activated K+ channels to establish the generalizability of the methods...
December 11, 2017: Small
Hojat Veisi, Seyed Ahmad Mirshokraie, Hossein Ahmadian
This study includes the procedure performed for the Pd@PS-Met preparation as a novel polymeric nanocatalyst, in which to entrapped palladium nanoparticles (Pd NPs) without agglomeration, metformine groups are applied (as linkers). The obtained catalyst could be evaluated using transmission electron microscopy (TEM), wavelength-dispersive X-ray spectroscopy (WDX), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), inductively coupled plasma (ICP), fourier transform infrared (FTIR), and Energy-dispersive X-ray spectroscopy (EDS)...
December 7, 2017: International Journal of Biological Macromolecules
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