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https://www.readbyqxmd.com/read/28099463/the-differential-effects-of-anesthetics-on-bacterial-behaviors
#1
Matthew Chamberlain, Sophia Koutsogiannaki, Matthew Schaefers, Hasan Babazada, Renyu Liu, Koichi Yuki
Volatile anesthetics have been in clinical use for a long period of time and are considered to be promiscuous by presumably interacting with several ion channels in the central nervous system to produce anesthesia. Because ion channels and their existing evolutionary analogues, ion transporters, are very important in various organisms, it is possible that volatile anesthetics may affect some bacteria. In this study, we hypothesized that volatile anesthetics could affect bacterial behaviors. We evaluated the impact of anesthetics on bacterial growth, motility (swimming and gliding) and biofilm formation of four common bacterial pathogens in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28091804/baseline-results-from-the-uk-signify-study-a-whole-body-mri-screening-study-in-tp53-mutation-carriers-and-matched-controls
#2
Sibel Saya, Emma Killick, Sarah Thomas, Natalie Taylor, Elizabeth K Bancroft, Jeanette Rothwell, Sarah Benafif, Alexander Dias, Christos Mikropoulos, Jenny Pope, Anthony Chamberlain, Ranga Gunapala, Louise Izatt, Lucy Side, Lisa Walker, Susan Tomkins, Jackie Cook, Julian Barwell, Vicki Wiles, Lauren Limb, Diana Eccles, Martin O Leach, Susan Shanley, Fiona J Gilbert, Helen Hanson, David Gallagher, Bala Rajashanker, Richard W Whitehouse, Dow-Mu Koh, S Aslam Sohaib, D Gareth Evans, Rosalind A Eeles
In the United Kingdom, current screening guidelines for TP53 germline mutation carriers solely recommends annual breast MRI, despite the wide spectrum of malignancies typically seen in this group. This study sought to investigate the role of one-off non-contrast whole-body MRI (WB MRI) in the screening of asymptomatic TP53 mutation carriers. 44 TP53 mutation carriers and 44 population controls were recruited. Scans were read by radiologists blinded to participant carrier status. The incidence of malignancies diagnosed in TP53 mutation carriers against general population controls was calculated...
January 16, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28077619/relative-importance-of-%C3%AE-cyto-and-%C3%AE-cyto-actin-in-primary-mouse-embryonic-fibroblasts
#3
Xiaobai Patrinostro, Allison R O'Rourke, Christopher M Chamberlain, Branden S Moriarity, Benjamin J Perrin, James M Ervasti
The highly homologous beta (βcyto) and gamma (γcyto) cytoplasmic actins are hypothesized to carry out both redundant and unique essential functions, but studies using targeted gene knockout and siRNA mediated transcript knockdown to examine βcyto- and γcyto-isoform specific functions in various cell types have yielded conflicting data. Here, we quantitatively characterized actin transcript and protein levels as well as cellular phenotypes in both gene- and transcript-targeted primary mouse embryonic fibroblasts...
January 11, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28075593/formation-of-nickel-clusters-wrapped-in-carbon-cages-toward-new-endohedral-metallofullerene-synthesis
#4
Alexander S Sinitsa, Thomas W Chamberlain, Thilo Zoberbier, Irina V Lebedeva, Andrey M Popov, Andrey A Knizhnik, Robert L McSweeney, Johannes Biskupek, Ute Kaiser, Andrei N Khlobystov
Despite the high potential of endohedral metallofullerenes (EMFs) for application in biology, medicine and molecular electronics, and recent efforts in EMF synthesis, the variety of EMFs accessible by conventional synthetic methods remains limited and does not include, for example, EMFs of late transition metals. We propose a method in which EMF formation is initiated by electron irradiation in aberration-corrected high-resolution transmission electron spectroscopy (AC-HRTEM) of a metal cluster surrounded by amorphous carbon inside a carbon nanotube serving as a nanoreactor and apply this method for synthesis of nickel EMFs...
January 18, 2017: Nano Letters
https://www.readbyqxmd.com/read/28069926/creatine-enhances-mitochondrial-mediated-oligodendrocyte-survival-following-demyelinating-injury
#5
Kelly A Chamberlain, Kristen S Chapey, Sonia E Nanescu, Jeffrey K Huang
: Chronic oligodendrocyte loss, which occurs in the demyelinating disorder multiple sclerosis (MS), contributes to axonal dysfunction and neurodegeneration. Current therapies are able to reduce MS severity, but do not prevent transition into the progressive phase of the disease, which is characterized by chronic neurodegeneration. Therefore, pharmacological compounds that promote oligodendrocyte survival could be beneficial for neuroprotection in MS. Here, we investigated the role of creatine, an organic acid involved in ATP buffering, in oligodendrocyte function...
January 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28069825/intravenous-anesthetic-propofol-binds-to-5-lipoxygenase-and-attenuates-leukotriene-b4-production
#6
Toshiaki Okuno, Sophia Koutsogiannaki, Mai Ohba, Matthew Chamberlain, Weiming Bu, Fu-Yan Lin, Roderic G Eckenhoff, Takehiko Yokomizo, Koichi Yuki
Propofol is an intravenous anesthetic that produces its anesthetic effect, largely via the GABAA receptor in the CNS, and also reduces the N-formyl-methionyl-leucyl-phenylalanine (fMLP)-induced neutrophil respiratory burst. Because fMLP-stimulated neutrophils produce leukotriene (LT)B4, we examined the effect of propofol on LTB4 production in vivo and in vitro Cecal ligation and puncture surgery was performed in mice, with or without exposure to propofol. Propofol attenuated the production of 5-lipoxygenase (5-LOX)-related arachidonic acid (AA) derivatives in the peritoneal fluid...
January 9, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28063396/cold-pressor-pain-in-skin-picking-disorder
#7
Jon E Grant, Sarah A Redden, Samuel R Chamberlain
Excoriation (skin-picking) disorder (SPD) is a disabling, under-recognized condition in which individuals repeatedly pick at their skin, leading to noticeable tissue damage. There has been no examination as to whether individuals with SPD have different pain thresholds or pain tolerances compared to healthy counterparts. Adults with SPD were examined on a variety of clinical measures including symptom severity and functioning. All participants underwent the cold pressor test. Heart rate, blood pressure, and self-reported pain were compared between SPD participants (n=14) and healthy controls (n=14)...
December 31, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/28057799/prospective-study-of-oral-anticoagulants-and-risk-of-liver-injury-in-patients-with-atrial-fibrillation
#8
Alvaro Alonso, Richard F MacLehose, Lin Y Chen, Lindsay Gs Bengtson, Alanna M Chamberlain, Faye L Norby, Pamela L Lutsey
OBJECTIVE: To assess the risk of liver injury hospitalisation in patients with atrial fibrillation (AF) after initiation of direct oral anticoagulants (DOACs) or warfarin and to determine predictors of liver injury hospitalisation in this population. METHODS: We studied 113 717 patients (mean age 70, 39% women) with AF included in the MarketScan Commercial and Medicare Supplemental databases with a first prescription for oral anticoagulation after 4 November 2011, followed through 31 December 2014...
January 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28046342/su-f-sps-09-parallel-mc-kernel-calculations-for-vmat-plan-improvement
#9
S Chamberlain, S French, D Nazareth
PURPOSE: Adding kernels (small perturbations in leaf positions) to the existing apertures of VMAT control points may improve plan quality. We investigate the calculation of kernel doses using a parallelized Monte Carlo (MC) method. METHODS: A clinical prostate VMAT DICOM plan was exported from Eclipse. An arbitrary control point and leaf were chosen, and a modified MLC file was created, corresponding to the leaf position offset by 0.5cm. The additional dose produced by this 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28039364/leptomeningeal-metastases-a-rano-proposal-for-response-criteria
#10
REVIEW
Marc Chamberlain, Larry Junck, Dieta Brandsma, Riccardo Soffietti, Roberta Rudà, Jeffrey Raizer, Willem Boogerd, Sophie Taillibert, Morris D Groves, Emilie Le Rhun, Julie Walker, Martin van den Bent, Patrick Y Wen, Kurt A Jaeckle
Leptomeningeal metastases (LM) currently lack standardization with respect to response assessment. A Response Assessment in Neuro-Oncology (RANO) working group with expertise in LM developed a consensus proposal for evaluating patients treated for this disease. Three basic elements in assessing response in LM are proposed: a standardized neurological examination, cerebral spinal fluid (CSF) cytology or flow cytometry, and radiographic evaluation. The group recommends that all patients enrolling in clinical trials undergo CSF analysis (cytology in all cancers; flow cytometry in hematologic cancers), complete contrast-enhanced neuraxis MRI, and in instances of planned intra-CSF therapy, radioisotope CSF flow studies...
December 29, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/28034943/dr-ben-franklin-and-an-unusual-modern-day-cure-for-recurrent-pleuritis
#11
Mikaela I Poling, Craig R Dufresne, Robert L Chamberlain
No abstract text is available yet for this article.
January 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28031389/systemic-therapy-of-brain-metastases-non-small-cell-lung-cancer-breast-cancer-and-melanoma
#12
REVIEW
Marc C Chamberlain, Christina S Baik, Vijayakrishna K Gadi, Shailender Bhatia, Laura Q M Chow
Brain metastases (BM) occur frequently in many cancers, particularly non-small cell lung cancer (NSCLC), breast cancer, and melanoma. The development of BM is associated with poor prognosis and has an adverse impact on survival and quality of life. Commonly used therapies for BM such as surgery or radiotherapy are associated with only modest benefits. However, recent advances in systemic therapy of many cancers have generated considerable interest in exploration of those therapies for treatment of intracranial metastases...
January 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28025229/malpractice-criminality-and-medical-regulation-reforming-the-role-of-the-gmc-in-fitness-to-practise-panels
#13
John Martyn Chamberlain
A recent Law Commission Review emphasised that medical fitness to practise panels (also called medical practitioners tribunals) are an important legal mechanism for ensuring that public trust in medical regulation is maintained when a complaint is made against a doctor. This article examines trends over time in panel outcomes to identify their effectiveness in ensuring public protection. Although a rise in complaints, and a change from the criminal to civil standard of proof, has not led to more doctors being struck off the medical register, increasingly action is being taken to provide advice, issue warnings, and agree rehabilitative forms of action with doctors...
December 26, 2016: Medical Law Review
https://www.readbyqxmd.com/read/28018708/clinical-outcomes-of-descemet-membrane-endothelial-keratoplasty-during-the-surgeon-learning-curve-versus-descemet-stripping-endothelial-keratoplasty-performed-at-the-same-time
#14
Jennifer Rose-Nussbaumer, Shashi Alloju, Winston Chamberlain
PURPOSE: To compare outcomes after Descemet Membrane Endothelial Keratoplasty (DMEK) and traditional Descemet Stripping Endothelial Keratoplasty (DSEK) during the surgeon's DMEK learning curve in a prospective, non-randomized, consecutive, interventional case series. METHODS: Consecutive patients presenting to the university eye clinics and undergoing endothelial keratoplasty were included. Data including patient demographics, visual acuity, endothelial cell counts and complications were recorded at baseline, as well as 3 and 6 months post-operatively...
October 2016: Journal of Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28008355/distinguishing-between-those-dying-suddenly-or-not-suddenly-from-coronary-heart-disease-long-term-prospective-results-from-the-northwick-park-heart-study
#15
Tom Meade, Tim Clayton, Douglas Chamberlain
AIM: To establish whether ECG findings are associated with subsequent risk of sudden death from coronary heart disease (CHD). METHODS AND RESULTS: Potential risk factors for CHD were measured at entry to the first Northwick Park Heart Study of 2167 men. ECG findings were coded as high or low risk for CHD according to definitions in the Minnesota code. Sudden or non-sudden deaths were defined as occurring in less than or more than 24 hours, respectively. The only factor independently associated with sudden death among the 262 men dying of CHD was high-risk ECG...
2016: Open Heart
https://www.readbyqxmd.com/read/28002495/space-use-and-habitat-selection-by-resident-and-transient-red-wolves-canis-rufus
#16
Joseph W Hinton, Christine Proctor, Marcella J Kelly, Frank T van Manen, Michael R Vaughan, Michael J Chamberlain
Recovery of large carnivores remains a challenge because complex spatial dynamics that facilitate population persistence are poorly understood. In particular, recovery of the critically endangered red wolf (Canis rufus) has been challenging because of its vulnerability to extinction via human-caused mortality and hybridization with coyotes (Canis latrans). Therefore, understanding red wolf space use and habitat selection is important to assist recovery because key aspects of wolf ecology such as interspecific competition, foraging, and habitat selection are well-known to influence population dynamics and persistence...
2016: PloS One
https://www.readbyqxmd.com/read/27994474/probiotics-improve-the-efficacy-of-standard-triple-therapy-in-the-eradication-of-helicobacter-pylori-a-meta-analysis
#17
Christine S M Lau, Amanda Ward, Ronald S Chamberlain
INTRODUCTION: Helicobacter pylori colonization is present in half of the world's population and can lead to numerous gastrointestinal diseases if left untreated, including peptic ulcer disease and gastric cancer. Although concurrent triple therapy remains the recommended treatment regimen for H. pylori eradication, its success rate and efficacy have been declining. Recent studies have shown that the addition of probiotics can significantly increase eradication rates by up to 50%. This meta-analysis examines the impact of probiotic supplementation on the efficacy of standard triple therapy in eradicating H...
2016: Infection and Drug Resistance
https://www.readbyqxmd.com/read/27993793/vemurafenib-in-metastatic-melanoma-patients-with-brain-metastases-an-open-label-single-arm-phase-2-multicentre-study
#18
G A McArthur, M Maio, A Arance, P Nathan, C Blank, M-F Avril, C Garbe, A Hauschild, D Schadendorf, O Hamid, M Fluck, M Thebeau, J Schachter, R Kefford, M Chamberlain, M Makrutzki, S Robson, R Gonzalez, K Margolin
BACKGROUND: Vemurafenib has shown activity in patients with BRAF(V600) mutated melanoma with brain metastases (BM). This phase 2 study evaluated vemurafenib in patients with/without prior treatment for BM. METHODS: Patients with BRAF(V600) mutated melanoma with BM were enrolled into cohort 1 (previously untreated BM) and cohort 2 (previously treated BM) and received vemurafenib (960 mg BID) until disease progression (PD) or intolerance. Primary endpoint was best overall response rate (BORR) in the brain in cohort 1 that was evaluated using modified RECIST 1...
December 19, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/27993335/the-oregon-model-of-behavior-family-therapy-from-intervention-design-to-promoting-large-scale-system-change
#19
Thomas Dishion, Marion Forgatch, Patricia Chamberlain, William E Pelham
This paper reviews the evolution of the Oregon model of family behavior therapy over the past four decades. Inspired by basic research on family interaction and innovation in behavior change theory, a set of intervention strategies were developed that were effective for reducing multiple forms of problem behavior in children (e.g., Patterson, Chamberlain, & Reid, 1982). Over the ensuing decades, the behavior family therapy principles were applied and adapted to promote children's adjustment to address family formation and adaptation (Family Check-Up model), family disruption and maladaptation (Parent Management Training-Oregon model), and family attenuation and dissolution (Treatment Foster Care-Oregon model)...
November 2016: Behavior Therapy
https://www.readbyqxmd.com/read/27993334/a-comparative-evaluation-of-a-parent-training-program-republished-article
#20
Gerald R Patterson, Patricia Chamberlain, John B Reid
This report is one of a series of outcome evaluation studies for parent-training procedures tailored specifically to families of preadolescent antisocial children. Referred families were screened to identify 19 problem children who were observed in their homes to be high-rate social aggressors. Cases were randomly assigned to the parent-training procedures or to a waiting-list comparison group. All but one of the latter accepted a referral for treatment elsewhere in the community. After an average of 17hours of therapy time, the cases in the experimental group were terminated...
November 2016: Behavior Therapy
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