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https://www.readbyqxmd.com/read/29050870/brugada-syndrome-is-associated-with-scar-and-endocardial-involvement-insights-from-high-density-mapping-with-the-rhythmia%C3%A2-mapping-system
#1
Rui Providência, Pedro Carmo, Francisco Moscoso Costa, Diogo Cavaco, Francisco Morgado, Mauricio Scanavacca, Pedro Adragão
The authors report the first catheter ablation of Brugada syndrome in the literature using the Rhythmia™ mapping system. Learning points include: (1) low voltage areas can be documented while mapping in some individuals, suggesting that Brugada syndrome may not be a pure ion channel disorder; (2) typical long fractionated potentials can also be identified in the endocardium, supporting the need to map the endocardium in all Brugada patients requiring ablation; (3) disappearance of the typical coved pattern following ablation does not necessarily predict cure, as the patient we present experienced ventricular fibrillation recurrence a few months later...
October 16, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29030447/housefly-musca-domestica-and-blow-fly-protophormia-terraenovae-as-vectors-of-colistin-resistance-genes-carrying-bacteria
#2
Jilei Zhang, Jiawei Wang, Li Chen, Afrah Kamal Yassin, Patrick Kelly, Patrick Butaye, Jing Li, Jiansen Gong, Russell Cattley, Kezong Qi, Chengming Wang
Flies have the capacity to transfer pathogens between different environments, acting as one of the most important vectors of human diseases worldwide. In this study, we trapped flies on a university campus and tested them for mobile resistance genes against colistin, a last-resort antibiotic in human medicine for treating clinical infections caused by multidrug-resistant Gram-negative bacteria. Quantitative PCRs we developed showed that 34.1% of Musca domestica (86/252) and 51.1% of Protophormia terraenovae (23/45) were positive for the mcr-1, 1...
October 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29025197/adenosine-versus-intravenous-calcium-channel-antagonists-for-supraventricular-tachycardia
#3
REVIEW
Samer Alabed, Ammar Sabouni, Rui Providencia, Edmond Atallah, Mohammed Qintar, Timothy Ja Chico
BACKGROUND: People with supraventricular tachycardia (SVT) frequently are symptomatic and present to the emergency department for treatment. Although vagal manoeuvres may terminate SVT, they often fail, and subsequently adenosine or calcium channel antagonists (CCAs) are administered. Both are known to be effective, but both have a significant side effect profile. This is an update of a Cochrane review previously published in 2006. OBJECTIVES: To review all randomised controlled trials (RCTs) that compare effects of adenosine versus CCAs in terminating SVT...
October 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29023055/isolation-of-potential-bacteria-as-inoculum-for-biofloc-formation-in-pacific-whiteleg-shrimp-litopenaeus-vannamei-culture-ponds
#4
Nor Azman Kasan, Nurarina Ayuni Ghazali, Mhd Ikhwanuddin, Zaharah Ibrahim
BACKGROUND AND OBJECTIVE: A new green technology to reduce environmental damages while optimizing production of Pacific Whiteleg shrimp, Litopenaeus vannamei was developed known as "Biofloc technology". Microbial communities in biofloc aggregates are responsible in eliminating water exchange and producing microbial proteins that can be used as supplemented feed for L. vannamei. This study aimed to isolate and identify potential bioflocculant-producing bacteria to be used as inoculum for rapid formation of biofloc...
2017: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/29018015/chronic-red-eye-a-masquerade-of-advanced-neoplastic-disease
#5
Joana Providência, Filipa Ponces, Guilherme Castela, Joaquim Murta
A 42-year-old woman presented with chronic history of left red eye for more than 12 months, treated with difference topical medication but without response. Ocular external examination demonstrated a firm palpable mass in the medial portion of the lower eyelid and slit-lamp evaluation of the lesion showed an ulcerated conjunctival nodule, keratin secretor. CT of the orbits revealed left-sided orbital mass located anteriorly, inferiorly and medially in the orbit, adjacent to the globe and orbit walls. Incisional biopsy of the lesion was consistent with invasive squamous cell carcinoma of the conjunctiva...
October 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29016796/empowerment-of-athletes-with-cardiac-disorders-a-new-paradigm
#6
Rui Providencia, Carina Teixeira, Oliver R Segal, Augustus Ullstein, Kim Mueser, Pier D Lambiase
Athletes with cardiac disorders frequently pose an ethical and medical dilemma to physicians assessing their eligibility to participate in sport. In recent decades, patient empowerment has been gaining increasing recognition in clinical decision-making. Empowerment is a process through which people are involved over the decisions and actions that affect their own lives. In the context of a cardiac disorder, empowerment means giving an athlete the chance to participate in the decision about whether or not to remain active in competition...
August 9, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29016772/do-women-benefit-equally-as-men-from-the-primary-prevention-implantable-cardioverter-defibrillator
#7
Sérgio Barra, Rui Providência, Serge Boveda, Kumar Narayanan, Munmohan Virdee, Eloi Marijon, Sharad Agarwal
Women traditionally have been and are still underrepresented in research in many important areas of cardiology, and guideline recommendations which also encompass women are mostly based on research conducted predominantly in men. However, there is plausible cause to believe that sex may have a potential influence on the benefit derived from the implantable cardioverter-defibrillators (ICD), alone or in association with cardiac resynchronization therapy. We assessed the possible relationship between sex and outcome with ICD implantation in the setting of primary prevention, by pooling the results of MUSTT, MADIT-II, DEFINITE, COMPANION, SCD-HeFT and DANISH trials in a meta-analysis...
July 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29016766/temporal-pattern-episode-duration-based-classification-of-atrial-fibrillation-as-paroxysmal-vs-persistent-is-it-time-to-develop-a-more-integrated-prognostic-score-to-optimize-management
#8
Matthew Hammond-Haley, Rui Providência, Pier D Lambiase
Atrial fibrillation (AF) is a clinically heterogeneous arrhythmia that is currently classified according to the variety of temporal rhythm based manifestations observed clinically, including 'first detected episode', 'paroxysmal', 'persistent', or 'permanent' AF. Despite being widely adopted by the most recent consensus guidelines, the utility of this classification system to stratify patients into distinct and clinically useful groups that have different outcomes including mortality, morbidity, specific cardiovascular outcomes, and quality of life (QoL), remains questionable...
July 11, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28988899/diabetic-choroidopathy-choroidal-vascular-density-and-volume-in-diabetic-retinopathy-with-swept-source-optical-coherence-tomography
#9
Jay C Wang, Inês Laíns, Joana Providência, Grayson W Armstrong, Ana R Santos, Pedro Gil, João Gil, Katherine E Talcott, João H Marques, João Figueira, Demetrios G Vavvas, Ivana K Kim, Joan W Miller, Deeba Husain, Rufino Silva, John B Miller
PURPOSE: To compare choroidal vascular density (CVD) and volume (CVV) in diabetic eyes and controls, using en face swept-source optical coherence tomography (SS-OCT). DESIGN: Prospective cross-sectional study. METHODS: ▪▪▪ SETTING: Multicenter PATIENT POPULATION: 143 diabetic eyes - 27 with no diabetic retinopathy (DR), 47 with nonproliferative DR (NPDR), 51 with NPDR and diabetic macular edema (DME), and 18 with proliferative DR (PDR), and 64 age-matched non-diabetic control eyes...
October 5, 2017: American Journal of Ophthalmology
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
#10
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/28949149/total-synthesis-of-repeating-unit-of-o-polysaccharide-of-providencia-alcalifaciens-o22-via-one-pot-glycosylation
#11
Ananda Rao Podilapu, Suvarn S Kulkarni
The first total synthesis of the phosphorylated trisaccharide repeating unit of Providencia alcalifaciens O22 is reported. The trisaccharide contains rare deoxyamino sugar AAT at the reducing end and d-glyceramide 2-phosphate at the other end. The efficient synthesis involves one-pot assembly of trisaccharide and late-stage phosphorylation as key steps.
October 6, 2017: Organic Letters
https://www.readbyqxmd.com/read/28939601/a-lytic-providencia-rettgeri-virus-of-potential-therapeutic-value-is-a-deep-branching-member-of-the-t5virus-genus
#12
Hugo Oliveira, Graça Pinto, Hanne Hendrix, Jean-Paul Noben, Jan Gawor, Andrew M Kropinski, Małgorzata Łobocka, Rob Lavigne, Joana Azeredo
Providencia rettgeri is emerging as a new opportunistic pathogen with high antibiotic resistance. The need to find alternative methods to control antibiotic resistant bacteria and the recent advances in phage therapy motivates the search of new phages able to infect Providencia spp.. This study describes the isolation and characterization of an obligatory lytic phage vB_PreS_PR1 (PR1) with therapeutic potential against drug-resistant P. rettgeri PR1 is a siphovirus. Its virion DNA size (118,537 bp), transcriptional organization, terminal repeats (10,461 bp) and nicks in the 3' -5' strand are similar to those of phage T5...
September 22, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28915476/microbial-remediation-of-fluoride-contaminated-water-via-a-novel-bacterium-providencia-vermicola-kx926492
#13
Shraboni Mukherjee, Priyanka Sahu, Gopinath Halder
The present study emphasizes on the isolation, identification and characterization of a fluoride-resistant bacteria from contaminated groundwater of a severely affected rural area. The isolate was investigated for its possible role towards bioremediation of fluoride. Bacterial growth was determined by various carbon and nitrogen sources. Influence of parameters like initial fluoride concentration (5-25 mg L(-1)), pH (3-9) and temperature (15-42 °C) on fluoride removal by Providencia sp. KX926492 were also examined...
December 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28890793/call-for-joint-informed-consent-in-athletes-with-inherited-cardiac-conditions
#14
REVIEW
Rui Providencia, Carina Teixeira, Oliver R Segal, Augustus Ullstein, Pier D Lambiase
Informed consent is of the utmost importance, especially in complex clinical situations where patients may be exposed to a life-threatening risk. A particularly complex example is the eligibility of competitive athletes with inherited cardiac conditions on medical grounds, especially when the risk is low or unquantifiable. The rationale and benefits of a joint informed consent for athletes to compete with potentially life-threatening cardiac conditions are discussed in this manuscript.
2017: Open Heart
https://www.readbyqxmd.com/read/28887556/biodegradation-of-gentamicin-by-bacterial-consortia-amqd4-in-synthetic-medium-and-raw-gentamicin-sewage
#15
Yuanwang Liu, Huiqing Chang, Zhaojun Li, Yao Feng, Dengmiao Cheng, Jianming Xue
Gentamicin, a broad spectrum antibiotic of the aminoglycoside class, is widely used for disease prevention of human beings as well as animals. Nowadays the environmental issue caused by the disposal of wastes containing gentamicin attracts increasing attention. In this study, a gentamicin degrading bacterial consortia named AMQD4, including Providencia vermicola, Brevundimonas diminuta, Alcaligenes sp. and Acinetobacter, was isolated from biosolids produced during gentamicin production for the removal of gentamicin in the environment...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28862787/panoramic-atrial-mapping-with-basket-catheters-a-quantitative-analysis-to-optimize-practice-patient-selection-and-catheter-choice
#16
Shohreh Honarbakhsh, Richard J Schilling, Rui Providência, Gurpreet Dhillon, Vinit Sawhney, Claire A Martin, Emily Keating, Malcolm Finlay, Syed Ahsan, Anthony Chow, Mark J Earley, Ross J Hunter
INTRODUCTION: Panoramic mapping with basket catheters has been used to map atrial fibrillation (AF). However, the limited tissue contact and coverage achieved has raised concerns. METHODS AND RESULTS: Patients undergoing catheter ablation for atrial tachycardia (AT) and persistent AF were recruited. Unipolar signals were recorded with the Constellation or FIRMap catheters. The proportion and distribution of anatomical coverage by the catheters was determined and tissue contact achieved measured...
September 1, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28854628/genomic-epidemiology-of-ndm-1-encoding-plasmids-in-latin-american-clinical-isolates-reveals-insights-into-the-evolution-of-multidrug-resistance
#17
Ricaurte Alejandro Marquez-Ortiz, Leanne Haggerty, Narda Olarte, Carolina Duarte, Ulises Garza-Ramos, Jesus Silva-Sanchez, Betsy E Castro, Eby M Sim, Mauricio Beltran, María V Moncada, Alberto Valderrama, Jaime E Castellanos, Ian G Charles, Natasha Vanegas, Javier Escobar-Perez, Nicola K Petty
Bacteria that produce the broad-spectrum Carbapenem antibiotic New Delhi Metallo-β-lactamase (NDM) place a burden on health care systems worldwide, due to the limited treatment options for infections caused by them and the rapid global spread of this antibiotic resistance mechanism. Although it is believed that the associated resistance gene blaNDM-1 originated in Acinetobacter spp., the role of Enterobacteriaceae in its dissemination remains unclear. In this study, we used whole genome sequencing to investigate the dissemination dynamics of blaNDM-1-positive plasmids in a set of 21 clinical NDM-1-positive isolates from Colombia and Mexico (Providencia rettgeri, Klebsiella pneumoniae, and Acinetobacter baumannii) as well as six representative NDM-1-positive Escherichia coli transconjugants...
June 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28843672/in-vitro-metal-catalyzed-oxidative-stress-in-dah7ps-methionine-modification-leads-to-structure-destabilization-and-induce-amorphous-aggregation
#18
Anchal Sharma, Vijay Kumar, Apurva Chatrath, Aditya Dev, Ramasare Prasad, Ashwani Kumar Sharma, Shailly Tomar, Pravindra Kumar
The first committed step of the shikimate pathway is catalyzed by a metalloenzyme 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase (DAH7PS), which exhibits vulnerability to the oxidative stress. DAH7PS undergoes inactivation in multiple ways in the presence of redox metal, H2O2, and superoxide. The molecular mechanism and susceptibility of its inactivation might differ in different organisms and are presently unclear. In the present work, we have cloned, expressed and purified a DAH7PS from Providencia alcalifaciens (PaDAH7PS)...
August 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28800828/culture-dependent-and-culture-independent-assessment-of-spoilage-community-growth-on-vp-lamb-meat-from-packaging-to-past-end-of-shelf-life
#19
Mandeep Kaur, Hongshan Shang, Mark Tamplin, Tom Ross, John P Bowman
Packaging and storage temperature are important factors that influence the shelf-life of vacuum packed (VP) meat. In this study the shelf-life of VP bone-in lamb hind shanks stored at 8 °C and -1.2 °C was determined in parallel to analyses of starting and eventual spoilage bacterial communities via Illumina MiSeq based 16S rRNA amplicon sequencing. The mean total viable counts (TVC) and lactic acid bacterial viable counts (LAB) were observed to increase to log 7.5 CFU/cm(2) and 7 CFU/cm(2) after 6 and 42 days at 8 °C and -1...
December 2017: Food Microbiology
https://www.readbyqxmd.com/read/28764161/providencia-rettgeri-an-emerging-nosocomial-uropathogen-in-an-indwelling-urinary-catheterised-patient
#20
Siddharth Sagar, Nagalakshmi Narasimhaswamy, Jessica D'Souza
Providencia rettgeri (P. rettgeri) is an ubiquitous organism but is seldom associated with human disease. We report the isolation of P. rettgeri from the urine sample of a 39-year-old male patient on prolonged Foley's catheterisation following a severe head injury. Identification of this organism was done by Matrix-Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry (MALDI-TOF) based systems. P. rettgeri is an emerging pathogen among long term catheterised patients. It reflects its ability to form biofilm on the surface of the indwelling catheter as well as the inherent urease producing property of the pathogen in question as a possible mechanism of pathogenesis...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
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