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https://www.readbyqxmd.com/read/29022099/defibrotide-for-the-treatment-of-sinusoidal-obstruction-syndrome-evaluation-of-response-to-therapy-and-patient-outcomes
#1
John Coutsouvelis, Sharon Avery, Michael Dooley, Carl Kirkpatrick, Andrew Spencer
PURPOSE: Defibrotide is an agent used to treat sinusoidal obstruction syndrome (SOS/VOD) in patients undergoing haemopoietic stem cell transplantation. The aim of this study was to evaluate the effectiveness of defibrotide used within institutional guidelines for the treatment of SOS/VOD in patients undergoing haemopoietic stem cell transplantation (HSCT). METHODS: Data for 23 patients was retrospectively reviewed to evaluate the effectiveness of defibrotide and the utility of response criteria to direct therapy as specified within institution guidelines...
October 11, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29020633/erasure-of-tet-oxidized-5-methylcytosine-by-a-srap-nuclease
#2
Soo-Mi Kweon, Bing Zhu, Yibu Chen, L Aravind, Shuang-Yong Xu, Douglas E Feldman
Enzymatic oxidation of 5-methylcytosine (5mC) in DNA by the Tet dioxygenases reprograms genome function in embryogenesis and postnatal development. Tet-oxidized derivatives of 5mC such as 5-hydroxymethylcytosine (5hmC) act as transient intermediates in DNA demethylation or persist as durable marks, yet how these alternative fates are specified at individual CpGs is not understood. Here, we report that the SOS response-associated peptidase (SRAP) domain protein Srap1, the mammalian ortholog of an ancient protein superfamily associated with DNA damage response operons in bacteria, binds to Tet-oxidized forms of 5mC in DNA and catalyzes turnover of these bases to unmodified cytosine by an autopeptidase-coupled nuclease...
October 10, 2017: Cell Reports
https://www.readbyqxmd.com/read/29018116/quinolone-resistance-reversion-by-targeting-the-sos-response
#3
E Recacha, J Machuca, P Díaz de Alba, M Ramos-Güelfo, F Docobo-Pérez, J Rodriguez-Beltrán, J Blázquez, A Pascual, J M Rodríguez-Martínez
Suppression of the SOS response has been postulated as a therapeutic strategy for potentiating antimicrobial agents. We aimed to evaluate the impact of its suppression on reversing resistance using a model of isogenic strains of Escherichia coli representing multiple levels of quinolone resistance. E. coli mutants exhibiting a spectrum of SOS activity were constructed from isogenic strains carrying quinolone resistance mechanisms with susceptible and resistant phenotypes. Changes in susceptibility were evaluated by static (MICs) and dynamic (killing curves or flow cytometry) methodologies...
October 10, 2017: MBio
https://www.readbyqxmd.com/read/28992704/mutants-of-the-flavoprotein-ilov-as-prospective-red-shifted-fluorescent-markers
#4
Maria G Khrenova, Yulia I Meteleshko, Alexander V Nemukhin
We report on novel variants of the flavin-based fluorescent protein iLOV with absorption and emission optical bands shifted to the longer wavelengths relative to their precursor. First attempts [J. Phys. Chem. B 2015, 119, 5176; 2016, 120, 3344] to improve spectral properties of iLOV, a fluorescent marker in living cells, showed that single point mutation Q489K could lead to a promising variant, but its realization was not successful due to unfavorable conformation of the flexible lysine side chain pointing away from the chromophore...
October 9, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28988766/estimation-of-the-future-remnant-liver-function-is-a-better-tool-to-predict-post-hepatectomy-liver-failure-than-platelet-based-liver-scores
#5
T Chapelle, B Op de Beeck, A Driessen, G Roeyen, B Bracke, V Hartman, I Huyghe, S Morrison, D Ysebaert, S Francque
INTRODUCTION: Recently, there has been increasing interest in the preoperative prediction and prevention of post-hepatectomy liver failure (PHLF). This is a particular concern in colorectal liver metastases (CRLM), when surgery follows potentially hepatotoxic chemotherapy. Platelet-based liver scores (PBLS) such as APRI and FIB-4 are predictive of chemotherapy-associated liver injury (CALI) and PHLF. Estimation of the future liver remnant function (eFLRF) by combining (99m)Tc-Mebrofenin Hepatobiliary Scintigraphy (HBS(BSA)) with future liver remnant volume ratio (FLRV%), is predictive of PHLF and related mortality...
September 4, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28983495/effect-of-fatigue-on-reading-computed-tomography-examination-of-the-multiply-injured-patient
#6
Elizabeth A Krupinski, Kevin M Schartz, Mark S Van Tassell, Mark T Madsen, Robert T Caldwell, Kevin S Berbaum
Our goal was to ascertain how fatigue affects performance in reading computed tomography (CT) examinations of patients with multiple injuries. CT images with multiple fractures from a previous study of satisfaction of search (SOS) were read by radiologists after a day of clinical work. Performance in this study with fatigued readers was compared to a previous study in which readers were not fatigued. Detection accuracy for obvious injuries was not affected by fatigue, but accuracy for subtle fractures was reduced ([Formula: see text])...
July 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28981222/-abused-child-or-suspected-abused-child-caregiving
#7
B Vanthournout
Optimal care for abused children and their families can only be achieved through joint and committed endeavours from scientists, social workers and judiciary. The topic of child abuse and neglect will be introduced by a short account of the evolution of the status of the child in Western society. This clinic will be approached in its systemic dimension and will examine the place of the child in the family system and society in general. Clinical intervention intricacy as well as widely varying factors to be taken into account such as protection, ethics, therapy, way of life etc...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28977128/bone-mass-by-quantitative-ultrasound-of-finger-phalanges-in-young-karate-practitioners
#8
Camila Justino de Oliveira Barbeta, Ezequiel Moreira Gonçalves, Keila Donassolo Santos Ribeiro, Roberto Ribeiro, Everton Paulo Roman, Gil Guerra-Júnior
OBJECTIVE: To evaluate bone mass by quantitative ultrasound of the phalanges in young karate practitioners compared to a control group. METHODS: Sample composed of 162 karate practitioners (52 females) and 326 healthy controls (110 females) aged 6 to 16 years old, in Western Paraná (Southern Brazil). Weight, height, BMI, amplitude-dependent speed of sound (AD-SoS) and bone transmission time (BTT) were evaluated. BMI, AD-SoS and BTT values were converted to Z scores...
September 21, 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28972659/fib-fabricated-complex-shaped-3d-chiral-photonic-silicon-nanostructures
#9
O Y Rogov, V V Artemov, M V Gorkunov, A A Ezhov, D N Khmelenin
Technologies capable of fabricating complex shaped silicon metasurfaces attract increasing attention. The focused ion beam fabrication technique is considered traditionally as causing thick damaged layers in silicon resulting in a significant rise of the optical absorption loss. We examine the structure of the FIB-fabricated nanostructures on the silicon-on-sapphire (SOS) platform and its optical characteristics before and after thermal oxidation. We show that being thermally oxidised the FIB-patterned silicon subwavelength nanostructure tends to regain its chiral optical features...
October 3, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28971634/bone-age-assessments-by-quantitative-ultrasound-sonicbone-and-hand-x-ray-based-methods-are-comparable
#10
Marianna Rachmiel, Larisa Naugolni, Kineret Mazor-Aronovitch, Nira Koren-Morag, Tzvi Bistritzer
BACKGROUND: Bone maturation is currently assessed by subjective and automated radiography. OBJECTIVES: To evaluate the concordance and reproducibility of a quantitative ultrasound (QUS) based device versus X-ray based methods. METHODS: The study population comprised 150 children, 76 males, 4-17 years of age. X-ray scans were evaluated according to wrist, carpal and phalanx areas for bone age. QUS was performed by the the BAUS™ device (SonicBone, Rishon Lezion, Israel), using speed-of-sound (SOS) and distance attenuation factor (ATN) in similar areas...
September 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28971298/inpatient-choledocholithiasis-requiring-ercp-and-cholecystectomy-outcomes-of-a-combined-single-inpatient-procedure-versus-separate-session-procedures
#11
Monica Passi, Sumant Inamdar, David Hersch, Oonagh Dowling, Divyesh V Sejpal, Arvind J Trindade
OBJECTIVES: Separate-session endoscopic retrograde cholangiography (ERCP) and laparoscopic cholecystectomy (LC) is the usual method for management of inpatient choledocholithiasis. Our goal was to compare single operative-session LC and ERCP to a multi-session approach for both the same hospitalization and within 30 days after; there is limited data comparing the three groups. METHODS: A retrospective review on inpatients with choledocholithiasis that underwent ERCP and LC was performed...
October 2, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28971276/spatial-temporal-variations-in-the-thermal-growing-degree-days-and-season-under-climate-warming-in-china-during-1960-2011
#12
Yunhe Yin, Haoyu Deng, Shaohong Wu
Vegetation growth and phenology are largely regulated by base temperature (T b) and thermal accumulation. Hence, the growing degree-days (GDD) and growing season (GS) calculated based on T b have primary effects on terrestrial ecosystems, and could be changed by the significant warming during the last century. By choosing 0, 5, and 10 °C, three key T b for vegetation growth, the GDD and GS in China during 1960-2011 were developed based on 536 meteorological stations with homogenized daily mean temperatures...
October 2, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28969441/the-effect-of-a-single-dose-of-intravenous-ketamine-on-suicidal-ideation-a-systematic-review-and-individual-participant-data-meta-analysis
#13
Samuel T Wilkinson, Elizabeth D Ballard, Michael H Bloch, Sanjay J Mathew, James W Murrough, Adriana Feder, Peter Sos, Gang Wang, Carlos A Zarate, Gerard Sanacora
OBJECTIVE: Suicide is a public health crisis with limited treatment options. The authors conducted a systematic review and individual participant data meta-analysis examining the effects of a single dose of ketamine on suicidal ideation. METHOD: Individual participant data were obtained from 10 of 11 identified comparison intervention studies that used either saline or midazolam as a control treatment. The analysis included only participants who had suicidal ideation at baseline (N=167)...
October 3, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28964616/quantitative-ultrasonography-measurements-of-the-phalanges-in-adolescents-a-mixed-longitudinal-study
#14
Anderson M de Moraes, Humberto M Carvalho, Ezequiel M Gonçalves, Gil Guerra-Júnior
This study examined the effect of pubertal development on Amplitude Dependent Speed of Sound (AD-SoS), accounting for the growth in stature among adolescents. A mixed-longitudinal design with 3 assessments across a 15-mo period in 439 adolescents (girls: 215; boys: 224) aged 9-16 y was used. Bayesian multilevel models were used to describe gender-specific AD-SoS variations among participants during pubertal years. Substantial increments in AD-SoS during pubertal years were observed in both genders. AD-SoS changes were positively related to stature, and the rate of stature growth per year...
September 27, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28960683/prevalence-of-tooth-forms-and-their-gender-correlation
#15
Eduardo Mahn, Stephanie Walls, Gilbert Jorquera, Ana María Valdés, Alejandra Val, Camila S Sampaio
OBJECTIVE: This study evaluated different tooth shapes from female and male genders, matching them with the firstly proposed pure basic forms, and proposed different hybrid shapes; it also evaluated the percentage of correct gender identification of lay people, dentists and dental students. MATERIALS AND METHODS: Standardized digital photos were taken from 460 people and analyzed by 3 experts regarding genders and tooth forms: pure basic forms-oval (O), triangular (T), square (S) and rectangular (R); and combined hybrid forms-oval-rectangular (OR), triangular-rectangular (TR), triangular-oval (TO), square-oval with flat lateral incisors (SOF), and square-oval with scalloped lateral incisors (SOS)...
September 29, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28960464/pde3-inhibitor-attenuates-rat-sinusoidal-obstruction-syndrome-through-inhibition-of-platelet-aggregation-in-disse-s-space
#16
Takashi Miyata, Hidehiro Tajima, Miki Hirata, Shin-Ichi Nakanuma, Isamu Makino, Hironori Hayashi, Katsunobu Oyama, Tomoharu Miyashita, Hiroyuki Takamura, Itasu Ninomiya, Sachio Fushida, Shoichi Iseki, Shin-Ichi Harada, Tomohiko Wakayama, Tetsuo Ohta
BACKGROUND AND AIM: Sinusoidal obstruction syndrome (SOS) is a serious drug-induced liver injury. However, the pathophysiology of the disease remains unclear. This study investigated the effects of cilostazol (CZ), a phosphodiesterase III inhibitor, in a monocrotaline (MCT)-induced rat model of SOS. METHODS: Male Wistar rats were administrated MCT to induce SOS. Rats were divided into control, MCT, and MCT+CZ groups. In the MCT+CZ group, CZ was administered at 48 h, 24 h, and 30 min prior to and 8 h and 24 h after MCT administration...
September 28, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28954836/impact-of-qtc-formulae-in-the-prevalence-of-short-corrected-qt-interval-and-impact-on-probability-and-diagnosis-of-short-qt-syndrome
#17
Rui Providência, Nabeela Karim, Neil Srinivasan, Shohreh Honarbakhsh, Maria João Vidigal Ferreira, Lino Gonçalves, Eloi Marijon, Pier D Lambiase
OBJECTIVE: To assess the prevalence of short corrected QT (QTc) intervals and its impact on short QT syndrome (SQTS) diagnosis using different QT correction formulae. METHODS: Observational study. The prevalence of short QTc intervals was estimated using four different QT correction formulae in 14 662 young adults from the 'Sudden Cardiac Death Screening of Risk FactOrS' (SCD-SOS) cohort. Then, using data from this cohort and the pooled-cohort analysed by Gollob et al, comprising 61 patients with SQTS, we assessed the impact of the different QTc correction formulae on SQTS probability and diagnosis based on the Expert Consensus recommendations (QTc ≤330 ms or QTc 330-360 ms+1 additional risk feature)...
September 27, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28947673/phenotypes-of-dnaxe145a-mutant-cells-indicate-that-the-escherichia-coli-clamp-loader-has-a-role-in-the-restart-of-stalled-replication-forks
#18
Ingvild Flåtten, Emily Helgesen, Ida Benedikte Pedersen, Torsten Waldminghaus, Christiane Rothe, Riikka Taipale, Line Johnsen, Kirsten Skarstad
The E. coli dnaXE145A mutation was discovered in connection with a screen for multicopy suppressors of the temperature sensitive Topoisomerase IV mutation parE10 The gene for the clamp loader subunits τ and γ, dnaX, but not the mutant dnaXE145A , was found to suppress parE10 (Ts) when over-expressed. Purified mutant protein was found to be functional in vitro, and few phenotypes were found in vivo apart from problems with partitioning of DNA in rich medium. We show here that a large number of the replication forks that initiate at oriC never reach the terminus in dnaXE145A mutant cells...
September 25, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28943390/the-e-coli-s30-lysate-proteome-a-prototype-for-cell-free-protein-production
#19
Daniel Foshag, Erik Henrich, Ekkehard Hiller, Miriam Schäfer, Christian Kerger, Anke Burger-Kentischer, Irene Diaz-Moreno, Sofía M García-Mauriño, Volker Dötsch, Steffen Rupp, Frank Bernhard
Protein production using processed cell lysates is a core technology in synthetic biology and these systems are excellent to produce difficult toxins or membrane proteins. However, the composition of the central lysate of cell-free systems is still a "black box". Escherichia coli lysates are most productive for cell-free expression, yielding several mgs of protein per ml of reaction. Their preparation implies proteome fractionation, resulting in strongly biased and yet unknown lysate compositions. Many metabolic pathways are expected to be truncated or completely removed...
September 21, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28943183/quantitative-ultrasound-of-the-mandible-as-a-novel-screening-approach-for-osteoporosis
#20
Anna Beattie, Seán Cournane, Ciarán Finucane, J Bernard Walsh, Leo F A Stassen
This study used an axial transmission quantitative ultrasound (QUS) device to assess mandibular bone strength. The aim of the study was first to establish the precision and repeatability of the axial transmission QUS measurement for a range of mandibular anatomic sites, and second to investigate the ability of the modality to differentiate between osteoporotic subjects and a control group. Three groups of adult Caucasian women were recruited: (1) healthy premenopausal women (n = 26), (2) healthy postmenopausal women (n = 48), and (3) women with osteoporosis (n = 53)...
September 21, 2017: Journal of Clinical Densitometry
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