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Rungaroon Pimparu, Sira Nitiyanontakit, Manuel Miró, Pakorn Varanusupakul
The concept of dynamic single-interface hollow fiber membrane liquid-phase microextraction (HF-LPME), where the target analyte was extracted on-line and eluted inside the lumen of the HF membrane, was explored. An ionic liquid containing supported liquid membrane was used for the trace determination of Cr(VI) as a model compound. Since the extraction took place on-line inside the hollow fiber membrane, the mass transfer behavior was described and discussed in comparison with the conventional HF-LPME. The extraction efficiency was improved by a recirculation configuration of the sample solution at relatively high sampling flow rates as a result of the increased effective contact area...
December 1, 2016: Talanta
Sira Carrasco García de León, José Manuel Flores Barragán, Natalia Villasanti Rivas
Sacrococcygeal chordoma is a malignant tumour originating from remnants of the notochord. Chordomas are slow-growing tumours whose symptoms develop insidiously. We present the case of a 72-year-old woman with a 6-month history of genital pain radiating to the perianal area and exacerbating when she was in a sitting position. MRI and PET studies revealed a large mass in the sacrococcygeal region causing bone destruction and invasion of neurovascular structures. The immunohistochemical study of the surgical specimen determined it to be chordoma...
May 2016: Case Reports in Neurology
Shiri Shinar, Gustavo Malinger, Zvi Leibovitz, Liat Ben-Sira, Esther Leshinsky-Silver, Liat Gindes, Tally Lerman-Sagie, Dvora Kidron, Dorit Lev
INTRODUCTION: We report the rare finding of recurrent periventricular pseudocysts (PVPC) in consecutive pregnancies in 4 families and their postnatal outcome. MATERIALS AND METHODS: We reviewed the databases of 3 large ultrasound units searching for the diagnosis of PVPC in 2 pregnancies of the same patient. RESULTS: The first case of recurrent PVPC was diagnosed in 2011 and since then 3 additional families were diagnosed (8 cases of PVPC all in all)...
October 7, 2016: Fetal Diagnosis and Therapy
Serajus Salaheen, Ekta Jaiswal, Jungsoo Joo, Mengfei Peng, Ryan Ho, Danielle OConnor, Katrina Adlerz, Jose Helim Aranda-Espinoza, Debabrata Biswas
The aim of this study was to evaluate the phenotypic and genotypic properties of Salmonella enterica serovar Typhimurium (ST) in the presence of lethal and sublethal concentrations (SLC2LOG) of blackberry (Rubus fruticosus) and blueberry (Vaccinium corymbosum) pomace extracts. Antimicrobial susceptibility, physicochemical properties, motility, biofilm formation ability, virulence gene expression patterns, and the ability of ST to colonize in chick cecum were evaluated in the presence of these bioactive extracts...
November 21, 2016: International Journal of Food Microbiology
Morten M Callesen, Martin F Berthelsen, Sira Lund, Annette C Füchtbauer, Ernst-Martin Füchtbauer, Jannik E Jakobsen
Recombinase mediated cassette exchange (RMCE) is a powerful tool for targeted insertion of transgenes. Here we describe non-proprietary 'RMCE-in' cell lines as an alternative to the 'Flp-in' system and cell lines. RMCE-in cell lines offer a number of advantages including increased efficiency of integration of the genetic element of interest (GEI) at a single docking site, lack of bacterial backbone at the docking site both before and after GEI integration, removal of selection and visual markers initially present at the docking site upon GEI integration and the possibility to validate GEI integration by loss of a red fluorescence reporter...
2016: PloS One
Sira M Karvinen, Mika Silvennoinen, Hongqiang Ma, Timo Törmäkangas, Timo Rantalainen, Rita Rinnankoski-Tuikka, Sanna Lensu, Lauren G Koch, Steven L Britton, Heikki Kainulainen
The production of heat, i.e., thermogenesis, is a significant component of the metabolic rate, which in turn affects weight gain and health. Thermogenesis is linked to physical activity (PA) level. However, it is not known whether intrinsic exercise capacity, aging, and long-term voluntary running affect core body temperature. Here we use rat models selectively bred to differ in maximal treadmill endurance running capacity (Low capacity runners, LCR and High capacity Runners, HCR), that as adults are divergent for aerobic exercise capacity, aging, and metabolic disease risk to study the connection between PA and body temperature...
2016: Frontiers in Physiology
Yi Duan, Jack D Huey, Jennifer K Herman
DNA replication and chromosome segregation must be carefully regulated to ensure reproductive success. During Bacillus subtilis sporulation, chromosome copy number is reduced to two, and cells divide asymmetrically to produce the future spore (forespore) compartment. For successful sporulation, oriC must be captured in the forespore. New rounds of DNA replication are prevented in part by SirA, a protein that utilizes residues in its N-terminus to directly target Domain I of the bacterial initiator, DnaA. Using a quantitative forespore chromosome organization assay, we show that SirA also acts in the same pathway as another DnaA regulator, Soj, to promote oriC capture in the forespore...
November 2016: Molecular Microbiology
Sira Sriswasdi, Masako Takashima, Ri-Ichiroh Manabe, Moriya Ohkuma, Takashi Sugita, Wataru Iwasaki
Polyploidization events such as whole-genome duplication and inter-species hybridization are major evolutionary forces that shape genomes. Although long-term effects of polyploidization have been well-characterized, early molecular evolutionary consequences of polyploidization remain largely unexplored. Here, we report the discovery of two recent and independent genome hybridizations within a single clade of a fungal genus, Trichosporon Comparative genomic analyses revealed that redundant genes are experiencing decelerations, not accelerations, of evolutionary rates...
August 2016: Genome Research
C A Merrick, C Wardrope, J E Paget, S D Colloms, S J Rosser
Metabolic pathway engineering in microbial hosts for heterologous biosynthesis of commodity compounds and fine chemicals offers a cheaper, greener, and more reliable method of production than does chemical synthesis. However, engineering metabolic pathways within a microbe is a complicated process: levels of gene expression, protein stability, enzyme activity, and metabolic flux must be balanced for high productivity without compromising host cell viability. A major rate-limiting step in engineering microbes for optimum biosynthesis of a target compound is DNA assembly, as current methods can be cumbersome and costly...
2016: Methods in Enzymology
Moran S Saghiv, Michel S Sagiv, David Ben-Sira
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Roser Garcia-Armengol, Sira Domenech, Carlos Botella-Campos, Francisco Javier Goncalves, Belén Menéndez, Pilar Teixidor, Lucia Muñoz-Narbona, Jordi Rimbau
BACKGROUND: To compare the prognostic value of pulse amplitude on intracranial pressure (ICP) monitoring and disproportionately enlarged subarachnoid space hydrocephalus (DESH) on magnetic resonance imaging (MRI) for predicting surgical benefit after shunt placement in idiopathic normal pressure hydrocephalus (iNPH). METHOD: Patients with suspected iNPH were prospectively recruited from a single centre. All patients received preoperative MRI and ICP monitoring. Patients were classified as shunt responders if they had an improvement of one point or more on the NPH score at 1 year post-surgery...
June 27, 2016: Acta Neurochirurgica
Sira Sansuk, Somkiat Srijaranai, Supalax Srijaranai
A conceptually new approach for an efficient removal of anionic organic dyes from wastewater using layered double hydroxides (LDHs) through their formation is presented. Acid yellow 25 (AY25) was used as anionic organic dye model molecules. As a result of the electrostatic induction, the removal mechanism involved a concurrent incorporation of AY25 molecules into the interlayer of LDHs during their structural arrangement, where Mg(2+) and Al(3+) ions were utilized to construct the base of LDHs in an alkaline solution...
June 21, 2016: Environmental Science & Technology
Esteban Pacheco, José Luis Llorente, Alejandro López-Hernández, Cristina García-Inclán, María Costales, Sira Potes Ares, Fernando López, Blanca Vivanco, Mario A Hermsen
INTRODUCTION: Chromosomal translocations at 2p23 cause overexpression of anaplastic lymphoma kinase (ALK), a receptor tyrosine kinase involved in signalling pathways that regulate cell proliferation. This translocation occurs in 5% of lung adenocarcinoma and has been demonstrated to be useful as a therapeutic target for crizotinib. sinonasal adenocarcinomas (SNAC) are histologically similar to lung adenocarcinomas; the aim of this study was to evaluate the presence of ALK alterations in SNAC...
May 13, 2016: Acta Otorrinolaringológica Española
Claire Murphy, Sira Nanthapisal, Kimberly Gilmour, Sue Laurent, Felice D'Arco, Cheryl Hemingway, Paul Brogan, Despina Eleftheriou
No abstract text is available yet for this article.
May 31, 2016: Neurology
Behairy El-Sayed Behairy, Mostafa Mohamed Sira, Khaled Refat Zalata, El-Sayed Ebrahem Salama, Mohamed Ahmed Abd-Allah
AIM: To evaluate transient elastography (TE) as a noninvasive tool in staging liver fibrosis compared with liver biopsy and morphometry in children with different chronic liver diseases. METHODS: A total of 90 children [50 with chronic hepatitis C virus (HCV), 20 with autoimmune hepatitis (AIH) and 20 with Wilson disease] were included in the study and underwent liver stiffness measurement (LSM) using TE. Liver biopsies were evaluated for fibrosis, qualitatively, by Ishak score and quantitatively by fibrosis area fraction (FAF) using digital image analysis (morphometry)...
April 28, 2016: World Journal of Gastroenterology: WJG
Hotaka Atarashi, Shinji Kawasaki, Yoichi Niimura, Naoto Tanaka, Sanae Okada, Yuh Shiwa, Akihito Endo, Junichi Nakagawa
Sirtuin is a protein with an enzymatic activity of NAD(+)-dependent protein deacetylation. It was first identified in yeast and its homologous genes have been widely found in various organisms. In bacteria, sirtuin gene was first described as cobB, encoding a cobalamin processing enzyme; and later its potential involvement in regulating acetylation levels of metabolic enzymes, transcription factors, chemotactic proteins and others have been reported. In order to study its physiological relevance in probiotic lactic acid bacteria, we analyzed the whole genome of three L...
2016: Journal of General and Applied Microbiology
Maya Weinstein, Liat Ben Sira, Artzi Moran, Irit Berger, Ronella Marom, Ronny Geva, Varda Gross-Tsur, Yael Leitner, Dafna Ben Bashat
Knowledge regarding the association between functional connectivity and white-matter (WM) maturation of motor and visual networks in preterm infants at term equivalent age (TEA) and their association with behavioral outcome is currently limited. Thirty-two preterm infants born<34 weeks gestational-age without major brain abnormalities were included in this study, underwent resting-state fMRI at TEA. Thirteen infants also underwent diffusion tensor imaging (DTI). Neurobehavioral assessments were performed at one and two years corrected age using the Griffiths Mental Developmental Scales...
April 23, 2016: Brain Research
Sira Defaus, Manuel Avilés, David Andreu, Ricardo Gutiérrez-Gallego
Glycan-protein interactions play a key role in mammalian fertilization, but data on the composition and identities of protein complexes involved in fertilization events are scarce, with the added complication that the glycans in such interactions tend to differ among species. In this study we have used a bovine model to detect, characterize and identify sperm lectins relevant in fertilization. Given the complexity of the sperm-toward-egg journey, two important aspects of the process, both primarily mediated by protein-sugar interactions, have been addressed: (1) formation of the sperm reservoir in the oviductal epithelium, and (2) gamete recognition (oocyte-sperm interaction)...
July 2016: Molecular & Cellular Proteomics: MCP
Sira Nanthapisal, Claire Murphy, Ebun Omoyinmi, Ying Hong, Ariane Standing, Stefan Berg, Maria Ekelund, Stephen Jolles, Lorraine Harper, Taryn Youngstein, Kimberly Gilmour, Nigel J Klein, Despina Eleftheriou, Paul A Brogan
OBJECTIVE: To describe the clinical features, genotype, and treatment in a series of subjects with confirmed adenosine deaminase 2 (ADA2) deficiency. METHODS: All symptomatic subjects were referred for genetic testing for suspected ADA2 deficiency; relatives of index cases were also screened. Demographic, clinical, and laboratory characteristics and treatments were recorded. Genetic analyses included whole-exome sequencing in 4 subjects and Sanger sequencing of CECR1 (the gene for cat eye syndrome chromosome region candidate 1) in all subjects...
September 2016: Arthritis & Rheumatology
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