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https://www.readbyqxmd.com/read/28448512/suppression-of-the-escherichia-coli-dnaa46-mutation-by-changes-in-the-activities-of-the-pyruvate-acetate-node-links-dna-replication-regulation-to-central-carbon-metabolism
#1
Joanna Tymecka-Mulik, Lidia Boss, Monika Maciąg-Dorszyńska, João F Matias Rodrigues, Lidia Gaffke, Anna Wosinski, Grzegorz M Cech, Agnieszka Szalewska-Pałasz, Grzegorz Węgrzyn, Monika Glinkowska
To ensure faithful transmission of genetic material to progeny cells, DNA replication is tightly regulated, mainly at the initiation step. Escherichia coli cells regulate the frequency of initiation according to growth conditions. Results of the classical, as well as the latest studies, suggest that the DNA replication in E. coli starts at a predefined, constant cell volume per chromosome but the mechanisms coordinating DNA replication with cell growth are still not fully understood. Results of recent investigations have revealed a role of metabolic pathway proteins in the control of cell division and a direct link between metabolism and DNA replication has also been suggested both in Bacillus subtilis and E...
2017: PloS One
https://www.readbyqxmd.com/read/28447627/short-term-blood-pressure-variability-and-long-term-blood-pressure-variability-which-one-is-a-reliable-predictor-for-recurrent-stroke
#2
Y Tao, J Xu, B Song, X Xie, H Gu, Q Liu, L Zhao, Y Wang, Y Xu, Y Wang
The relationship between blood pressure variability (BPV) and stroke recurrence is controversial. This study aimed to evaluate the predictive value of short-term and long-term BPV for stroke recurrence. The data from blood pressure and clinical outcome in TIA or ischemic stroke (BOSS) study included participants with acute ischemic stroke or transient ischemic attack (TIA) within 7 days after onset. Short-term BPV was measured by 24-h ambulatory BP measurement during hospitalisation. Long-term BPV, based on home blood pressure measurement, was measured by patients or their families from discharge to 90 days after qualifying events onset (twice daily)...
April 27, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28446881/assessment-of-airway-distensibility-by-the-forced-oscillation-technique-reproducible-and-potentially-simplifiable
#3
Samuel Mailhot-Larouche, Mélanie Lachance, Michela Bullone, Cyndi Henry, Ronald J Dandurand, Louis-Philippe Boulet, Michel Laviolette, Gregory G King, Claude S Farah, Ynuk Bossé
A non-invasive index of airway distensibility is required to track airway remodeling over time. The forced oscillation technique (FOT) provides such an index by measuring the change in respiratory system conductance at 5 Hz over the corresponding change in lung volume (ΔGrs5/ΔVL). To become useful clinically, this method has to be reproducible and easy to perform. The series of breathing maneuvers required to measure distensibility would be greatly facilitated if the difficulty of breathing below functional residual capacity (FRC) could be precluded and the number of maneuvers could be reduced...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28438922/surgeons-say-they-expressed-safety-concerns-to-hospital-bosses-before-child-s-death
#4
(no author information available yet)
No abstract text is available yet for this article.
April 24, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28438322/water-fat-dixon-sequences-in-the-evaluation-of-breast-implants-proposal-of-a-time-effective-rapid-approach-in-the-clinical-practice
#5
M Marcon, A S Becker, E J Ulbrich, T Frauenfelder, A Boss
AIM: To evaluate the diagnostic accuracy achieved from a fat-water Dixon sequence alone compared to a combination of a silicone-specific magnetic resonance imaging (MRI) sequence and a water-specific MRI sequence in the assessment of breast implants. MATERIALS AND METHODS: In this institutional review board (IRB)-approved study the integrity of breast implants was assessed retrospectively in 27 patients undergoing breast MRI at 3 T. A qualitative evaluation of (set 1) a silicon-selective water-saturated short tau inversion recovery (STIR) sequence in combination with a water-only Dixon dataset (total acquisition time 7 minutes 17 seconds), and of (set 2) fat-only and water-only Dixon datasets (4 minutes 8 seconds) was performed by two readers independently evaluating the following features: margin definition of the implant, water suppression homogeneity, image quality, presence of artefacts and their effects on the imaging interpretation, and diagnostic confidence...
April 21, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28437917/vector-radiative-transfer-model-for-coupled-atmosphere-and-ocean-systems-including-inelastic-sources-in-ocean-waters
#6
Peng-Wang Zhai, Yongxiang Hu, David M Winker, Bryan A Franz, Jeremy Werdell, Emmanuel Boss
Inelastic scattering plays an important role in ocean optics. The main inelastic scattering mechanisms include Raman scattering, fluorescence by colored dissolved organic matter (FDOM), and fluorescence by chlorophyll. This paper reports an implementation of all three inelastic scattering mechanisms in the exact vector radiative transfer model for coupled atmosphere and ocean Systems (CAOS). Simulation shows that FDOM contributes to the water radiation field in the broad visible spectral region, while chlorophyll fluorescence is limited in a narrow band centered at 685 nm...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28434406/efavirenz-based-simplification-after-successful-early-lopinavir-boosted-ritonavir-based-therapy-in-hiv-infected-children-in-burkina-faso-and-c%C3%A3-te-d-ivoire-the-monod-anrs-12206-non-inferiority-randomised-trial
#7
Désiré Lucien Dahourou, Madeleine Amorissani-Folquet, Karen Malateste, Clarisse Amani-Bosse, Malik Coulibaly, Carole Seguin-Devaux, Thomas Toni, Rasmata Ouédraogo, Stéphane Blanche, Caroline Yonaba, François Eboua, Philippe Lepage, Divine Avit, Sylvie Ouédraogo, Philippe Van de Perre, Sylvie N'Gbeche, Angèle Kalmogho, Roger Salamon, Nicolas Meda, Marguerite Timité-Konan, Valériane Leroy
BACKGROUND: The 2016 World Health Organization guidelines recommend all children <3 years start antiretroviral therapy (ART) on protease inhibitor-based regimens. But lopinavir/ritonavir (LPV/r) syrup has many challenges in low-income countries, including limited availability, requires refrigeration, interactions with anti-tuberculous drugs, twice-daily dosing, poor palatability in young children, and higher cost than non-nucleoside reverse transcriptase inhibitor (NNRTI) drugs. Successfully initiating LPV/r-based ART in HIV-infected children aged <2 years raises operational challenges that could be simplified by switching to a protease inhibitor-sparing therapy based on efavirenz (EFV), although, to date, EFV is not recommended in children <3 years...
April 24, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28432801/weight-loss-in-obese-girls-with-polycystic-ovarian-syndrome-is-associated-with-a-decrease-of-anti-muellerian-hormone-concentrations
#8
Thomas Reinehr, Alexandra Kulle, Juliane Rothermel, Caroline Knop, Nina Lass, Christina Bosse, Paul-Martin Holterhus
OBJECTIVE: The Anti- Muellerian Hormone (AMH) has been reported as surrogate marker of antral follicles, which are the origins of hyperandrogenism in polycystic ovarian syndrome (PCOS). Therefore, AMH may be useful for the diagnosis of PCOS. The objective was to study the longitudinal changes in AMH concentrations in girls with and without PCOS. DESIGN: This is a longitudinal study of obese girls participating in a 1-year lifestyle intervention. PATIENTS: Forty obese girls aged 13-16 years (50% with PCOS) were included in the study...
April 22, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28429620/physician-perspectives-on-decision-making-for-treatment-of-pediatric-sleep-disordered-breathing
#9
Emily F Boss, Anne R Links, Ron Saxton, Tina L Cheng, Mary Catherine Beach
Sleep-disordered breathing (SDB) is prevalent in children and most commonly treated by surgery with adenotonsillectomy. We aimed to learn physician perspectives of social and communication factors that influence decision making for treatment of pediatric SDB. Purposive sampling identified 10 physician key informants across disciplines and practice settings, who participated in semistructured interviews regarding SDB care experiences and communication with parents. Interviews were analyzed using directed qualitative content analysis...
April 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28424422/limited-impact-of-intratumour-heterogeneity-on-molecular-risk-assignment-in-endometrial-cancer
#10
Manouk van Esterik, Inge C Van Gool, Cor D de Kroon, Remi A Nout, Carien L Creutzberg, Vincent T H B M Smit, Tjalling Bosse, Ellen Stelloo
INTRODUCTION: Individual prediction of tumour behaviour based on molecular markers may refine adjuvant treatment strategies in endometrial cancer (EC). As these molecular alterations are determined in a small tumour fraction, high intratumour heterogeneity may interfere with correct risk prediction. This study aimed to investigate to which extent intratumour heterogeneity exists for molecular markers and whether it affects the molecular risk assignment in EC. METHODS: Forty-nine ECs (three tumour blocks/case) were selected with alterations in POLE (n=10), CTNNB1 (n=8), p53 (n=10), mismatch repair (n=11), L1CAM (n=10), and ECs without any of these markers (n=9)...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421854/reduction-of-bold-interference-in-pseudo-continuous-arterial-spin-labeling-towards-quantitative-fmri
#11
Geoffrey Warnock, Pinar S Özbay, Felix P Kuhn, Daniel Nanz, Alfred Buck, Andreas Boss, Cristina Rossi
Fluctuations in blood-oxygenation level dependent (BOLD) signal and perfusion affect the quantification of changes in cerebral blood flow (CBF), coupled to neuronal activity, in arterial spin labeling (ASL). Subtraction methods for control and labeled MR images (i.e. pair-wise, surround subtraction, and subtraction of sinc-interpolated images), postulated to mitigate this interference in pseudo-continuous ASL (pCASL), were evaluated by comparison with quantitative (15)O-water PET. At rest, a good agreement in the CBF values was found between PET and MRI for each of the subtraction methods...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28416275/cisplatin-analogs-confer-protection-against-cyanide-poisoning
#12
Anjali K Nath, Xu Shi, Devin L Harrison, Jordan E Morningstar, Sari Mahon, Adriano Chan, Patrick Sips, Jangwoen Lee, Calum A MacRae, Gerry R Boss, Matthew Brenner, Robert E Gerszten, Randall T Peterson
Cisplatin holds an illustrious position in the history of chemistry most notably for its role in the virtual cure of testicular cancer. Here we describe a role for this small molecule in cyanide detoxification in vivo. Cyanide kills organisms as diverse as insects, fish, and humans within seconds to hours. Current antidotes exhibit limited efficacy and are not amenable to mass distribution requiring the development of new classes of antidotes. The binding affinity of the cyanide anion for the positively charged metal platinum is known to create an extremely stable complex in vitro...
April 7, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28410744/rapid-liver-volume-increase-induced-by-associating-liver-partition-with-portal-vein-ligation-for-staged-hepatectomy-alpps-is-it-edema-steatosis-or-true-proliferation
#13
Dilmurodjon Eshmuminov, Christoph Tschuor, Dimitri Aristotle Raptis, Andreas Boss, Moritz C Wurnig, Gregory Sergeant, Erik Schadde, Pierre-Alain Clavien
No abstract text is available yet for this article.
April 12, 2017: Surgery
https://www.readbyqxmd.com/read/28403321/depression-anxiety-hopelessness-and-quality-of-life-in-users-of-cocaine-crack-in-outpatient-treatment
#14
Camila Bosse Paiva, Isadora Borne Ferreira, Vera Lúcia Bosa, Joana Corrêa de Magalhães Narvaez
Objective: To identify symptoms of anxiety, depression, and feelings of hopelessness in patients in outpatient treatment for substance dependency and to test for correlations with various aspects of their quality of life. Methods: A cross-sectional study of a sample of 25 men in recuperation from substance dependency, selected by convenience. We assessed symptoms of depression (Beck Depression Inventory-II), anxiety (Beck Anxiety Inventory), hopelessness (Beck Hopelessness Scale), and quality of life (World Health Organization Quality of Life instrument-Abbreviated version [WHOQOL-Bref]), and also analyzed sociodemographic profile, substance abuse, and family history...
January 2017: Trends in Psychiatry and Psychotherapy
https://www.readbyqxmd.com/read/28393573/persistence-with-rapid-acting-insulin-and-its-association-with-a1c-level-and-severe-hypoglycemia-among-elderly-patients-with-type-2-diabetes
#15
Usha Sambamoorthi, Rahul Garg, Arijita Deb, Tao Fan, Anders Boss
OBJECTIVE: To examine the persistence with rapid-acting insulin (RAI) and its association with clinical outcomes among elderly patients with type 2 diabetes (T2D). METHODS: This observational, retrospective cohort study analyzed RAI persistence and its association with change in A1C and risk of severe hypoglycemia among elderly (≥65 years) Medicare beneficiaries with T2D who added RAI to their basal insulin regimen. RESULTS: Among T2D patients with >1 RAI prescriptions (n = 3,927), only 21% were persistent...
April 10, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28389461/surgeons-say-they-expressed-safety-concerns-to-hospital-bosses-before-child-s-death
#16
Clare Dyer
No abstract text is available yet for this article.
April 7, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28387359/expression-functional-characterization-and-solid-state-nmr-investigation-of-the-g-protein-coupled-ghs-receptor-in-bilayer-membranes
#17
Stefanie Schrottke, Anette Kaiser, Gerrit Vortmeier, Sylvia Els-Heindl, Dennis Worm, Mathias Bosse, Peter Schmidt, Holger A Scheidt, Annette G Beck-Sickinger, Daniel Huster
The expression, functional reconstitution and first NMR characterization of the human growth hormone secretagogue (GHS) receptor reconstituted into either DMPC or POPC membranes is described. The receptor was expressed in E. coli. refolded, and reconstituted into bilayer membranes. The molecule was characterized by (15)N and (13)C solid-state NMR spectroscopy in the absence and in the presence of its natural agonist ghrelin or an inverse agonist. Static (15)N NMR spectra of the uniformly labeled receptor are indicative of axially symmetric rotational diffusion of the G protein-coupled receptor in the membrane...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382852/cardiorespiratory-fitness-cognition-and-brain-structure-after-tia-or-minor-ischemic-stroke
#18
H Myrthe Boss, Sander M Van Schaik, Theo D Witkamp, Mirjam I Geerlings, Henry C Weinstein, Renske M Van den Berg-Vos
Background It is not known whether cardiorespiratory fitness is associated with better cognitive performance and brain structure in patients with a TIA or minor ischemic stroke. Aims To examine the association between cardiorespiratory fitness, cognition and brain structure in patients with a TIA and minor stroke. Methods The study population consisted of patients with a TIA or minor stroke with a baseline measurement of the peak oxygen consumption, a MRI scan of brain and neuropsychological assessment. Composite z-scores were calculated for the cognitive domains attention, memory and executive functioning...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28377582/nociceptive-drg-neurons-express-muscle-lim-protein-upon-axonal-injury
#19
Evgeny Levin, Anastasia Andreadaki, Philipp Gobrecht, Frank Bosse, Dietmar Fischer
Muscle lim protein (MLP) has long been regarded as a cytosolic and nuclear muscular protein. Here, we show that MLP is also expressed in a subpopulation of adult rat dorsal root ganglia (DRG) neurons in response to axonal injury, while the protein was not detectable in naïve cells. Detailed immunohistochemical analysis of L4/L5 DRG revealed ~3% of MLP-positive neurons 2 days after complete sciatic nerve crush and maximum ~10% after 4-14 days. Similarly, in mixed cultures from cervical, thoracic, lumbar and sacral DRG ~6% of neurons were MLP-positive after 2 days and maximal 17% after 3 days...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28373932/endoscopic-resection-of-dorsal-boss-of-the-second-and-third-tarsometatarsal-joints
#20
Tun Hing Lui
Dorsal boss of the foot also known as "tarsal boss," "dorsal exostosis," and "humped bone" is a bone spur that grows from one of the intertarsal or tarsometatarsal joints. It can occur with or without arthritis of the underlying joints. Surgery is indicated if the symptoms do not respond to conservative treatment. Excision of the dorsal boss with or without fusion of the underlying joint is the operative treatment of choice. We report an arthroscopic approach of resection of the dorsal exostosis. Arthroscopic arthrodesis if indicated can be performed through the same portals...
February 2017: Arthroscopy Techniques
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