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https://www.readbyqxmd.com/read/29158272/combination-antibiotic-exposure-selectively-alters-the-development-of-vancomycin-intermediate-resistance-in-staphylococcus-aureus
#1
Xuting Zheng, Andrew D Berti, Sue McCrone, Melanie Roch, Adriana E Rosato, Warren E Rose, Baiyi Chen
Invasive methicillin-resistant Staphylococcus aureus (MRSA) treated with vancomycin (VAN) is associated with reduced VAN susceptibility and treatment failure. VAN combination therapy is one strategy to improve response, but comprehensive assessments of combinations to prevent resistance are limited. This study identifies optimal combinations to prevent the emergence of VAN-intermediate Staphylococcus aureus (VISA). Two standard MRSA and two heterogeneous VISA (hVISA) strains were exposed for 28 days in vitro to VAN alone, VAN with cefazolin (CFZ), fosfomycin (FOF), gentamicin (GEN), meropenem (MEM), rifampin (RIF), piperacillin-tazobactam (TZP) or trimethoprim-sulfamethoxazole (SXT)...
November 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29155878/irhom2-is-essential-for-innate-immunity-to-rna-virus-by-antagonizing-er-and-mitochondria-associated-degradation-of-visa
#2
Wei-Wei Luo, Shu Li, Chen Li, Zhou-Qin Zheng, Pan Cao, Zhen Tong, Huan Lian, Su-Yun Wang, Hong-Bing Shu, Yan-Yi Wang
VISA (also known as MAVS, IPS-1 and Cardif) is an essential adaptor protein in innate immune response to RNA virus. The protein level of VISA is delicately regulated before and after viral infection to ensure the optimal activation and timely termination of innate antiviral response. It has been reported that several E3 ubiquitin ligases can mediate the degradation of VISA, but how the stability of VISA is maintained before and after viral infection remains enigmatic. In this study, we found that the ER-associated inactive rhomboid protein 2 (iRhom2) plays an essential role in mounting an efficient innate immune response to RNA virus by maintaining the stability of VISA through distinct mechanisms...
November 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29145175/antimicrobial-activity-of-galangin-and-its-effects-on-murein-hydrolases-of-vancomycin-intermediate-staphylococcus-aureus-visa-strain-mu50
#3
Jing Ouyang, Fengjun Sun, Wei Feng, Yonghong Xie, Lijuan Ren, Yongchuan Chen
Backgroud: Antibiotic treatment for infections caused by vancomycin-intermediate Staphylococcus aureus (VISA) strains is challenging, and only a few effective and curative methods have been developed to combat these strains. This study aimed to investigate the antimicrobial activity of galangin against S. aureus and its effects on the murein hydrolases of VISA strain Mu50. This is the first report on these effects of galangin, and it may help to improve the treatment for VISA infections by demonstrating the effective use of galangin...
November 17, 2017: Chemotherapy
https://www.readbyqxmd.com/read/29141629/the-potential-impact-of-brexit-and-immigration-policies-on-the-gp-workforce-in-england-a-cross-sectional-observational-study-of-gp-qualification-region-and-the-characteristics-of-the-areas-and-population-they-served-in-september-2016
#4
Aneez Esmail, Maria Panagioti, Evangelos Kontopantelis
BACKGROUND: The UK is dependent on international doctors, with a greater proportion of non-UK qualified doctors working in its universal health care system than in any other European country, except Ireland and Norway. The terms of the UK exit from the European Union can reduce the ability of European Economic Area (EEA) qualified doctors to work in the UK, while new visa requirements will significantly restrict the influx of non-EEA doctors. We aimed to explore the implications of policy restrictions on immigration, by regionally and spatially describing the characteristics of general practitioners (GPs) by region of medical qualification and the characteristics of the populations they serve...
November 16, 2017: BMC Medicine
https://www.readbyqxmd.com/read/29126733/allicin-inspired-pyridyl-disulfides-as-antimicrobial-agents-for-multidrug-resistant-staphylococcus-aureus
#5
Jordan G Sheppard, Jeremy P McAleer, Pushkar Saralkar, Werner J Geldenhuys, Timothy E Long
A chemical library comprised of nineteen synthesized pyridyl disulfides that emulate the chemical reactivity of allicin (garlic) was evaluated for antimicrobial activity against a panel of pathogenic bacteria. Gram-positive species including vancomycin-intermediate and vancomycin-resistant Staphylococcus aureus (VISA, VRSA) demonstrated the highest level of susceptibility toward analogs with S-alkyl chains of 7-9 carbons in length. Further biological studies revealed that the disulfides display synergy with vancomycin against VRSA, cause dispersal of S...
October 12, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29109158/metabolic-mitigation-of-staphylococcus-aureus-vancomycin-intermediate-level-susceptibility
#6
Stewart G Gardner, Darrell D Marshall, Robert S Daum, Robert Powers, Greg A Somerville
Staphylococcus aureus is a major human pathogen whose infections are increasingly difficult to treat due to increased antibiotic resistance, including resistance to vancomycin. Vancomycin intermediate-level susceptibility S. aureus (VISA) strains develop resistance to vancomycin through adaptive changes that are incompletely understood. Central to this adaptation are metabolic changes that permit growth in the presence of vancomycin. To define the metabolic changes associated with adaptive resistance to vancomycin in S...
November 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29074131/grouper-mavs-functions-as-a-crucial-antiviral-molecule-against-nervous-necrosis-virus-infection
#7
Youhua Huang, Jingcheng Zhang, Zhengliang Ouyang, Jiaxin Liu, Ya Zhang, Yin Hu, Xiaohong Huang, Qiwei Qin
Mitochondrial antiviral signaling protein (MAVS), also known as IPS-1, VISA, and Cardif, has been well studied for its crucial roles in the mammalian interferon immune response. To better understand the actions of MAVS in fish immune response, a MAVS homolog from orange spotted grouper (Epinephelus coioides) (EcMAVS) was cloned and characterized in this study. EcMAVS encoded a 563-amino acid peptide which showed 64% and 20% identity to rock bream (Oplegnathus fasciatus) and human (Homo sapiens), respectively...
October 23, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29069173/solidarity-an-innovative-perspective-in-the-management-and-organization-of-sanitary-surveillance-actions
#8
Cristian Oliveira Benevides Sanches Leal, Carmen Fontes de Souza Teixeira
This is a theoretical essay about the development of the concept of solidarity, a word used in the regulatory framework and in political proposals to reorient the Brazilian Unified Health System (SUS). The methodology consisted of mapping authors addressing human action aspects related to this theme from Durkheim's tradition, linking them to his followers, like Marcel Mauss and authors from the "anti-utilitarianism" movement in social sciences. Solidarity is one way to express a "gift" and appears as a multidimensional action, where duty and freedom, instrumental interest and disinterest interpose and interlace...
October 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/29027161/considerations-on-experimental-design-and-data-analysis-of-chromatin-immunoprecipitation-experiments
#9
Antonio Jordán-Pla, Neus Visa
Arguably one of the most valuable techniques to study chromatin organization, ChIP is the method of choice to map the contacts established between proteins and genomic DNA. Ever since its inception, more than 30 years ago, ChIP has been constantly evolving, improving, and expanding its capabilities and reach. Despite its widespread use by many laboratories across a wide variety of disciplines, ChIP assays can be sometimes challenging to design, and are often sensitive to variations in practical implementation...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29027160/chip-and-chip-related-techniques-expanding-the-fields-of-application-and-improving-chip-performance
#10
Neus Visa, Antonio Jordán-Pla
Protein-DNA interactions in vivo can be detected and quantified by chromatin immunoprecipitation (ChIP). ChIP has been instrumental for the advancement of epigenetics and has set the groundwork for the development of a number of ChIP-related techniques that have provided valuable information about the organization and function of genomes. Here, we provide an introduction to ChIP and discuss the applications of ChIP in different research areas. We also review some of the strategies that have been devised to improve ChIP performance...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29025807/examination-outcomes-and-work-locations-of-international-medical-graduate-family-medicine-residents-in-canada
#11
Maria Mathews, Rima Kandar, Steve Slade, Yanqing Yi, Sue Beardall, Ivy Bourgeault
OBJECTIVE: To describe the postgraduate medical education (PGME) examination outcomes and work locations of international medical graduates (IMGs); and to identify differences between Canadians studying abroad (CSAs) and non-CSAs. DESIGN: Cohort study using data from the National IMG Database and Scott's Medical Database. SETTING: Canada. PARTICIPANTS: All IMGs who had first entered a family medicine residency program between 2005 and 2009, with the exclusion of US graduates, visa trainees, and fellowship trainees...
October 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28977226/prevention-of-chronic-complications-of-diabetes-mellitus-according-to-complexity
#12
Maria Aparecida Salci, Betina Hörner Schlindwein Meirelles, Denise Maria Vieira Guerreiro da Silva
Objective: To assess the prevention by primary health care providers of chronic complications of diabetes mellitus according to the complex thinking theoretical approach. Method: Evaluative research based on the complex thinking theoretical approach. The following techniques for data collection were used: interviews with 38 participants; observation in collective and individual appointments; and analysis of medical records of people with diabetes. The triangulation applied for data analysis was the ATLAS...
September 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28973612/h-1b-visa-applications-for-physicians-reply
#13
LETTER
Peter A Kahn, Tova M Gardin
No abstract text is available yet for this article.
September 26, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28973609/h-1b-visa-applications-for-physicians
#14
LETTER
Nkemakolam Iroegbu, Marko Jachtorowycz, Mike Sherman
No abstract text is available yet for this article.
September 26, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28954329/-a-comparative-study-of-the-calcaneal-closing-wedge-calcaneal-osteotomy-versus-posterior-superior-prominence-removal-in-both-sides-with-haglund-syndrome
#15
C Lin, L Ma, W Chen, X Tao, C S Yuan, B H Zhou, K L Tang
Objective: To compare the clinical outcome of removal of calcaneal posterior-superior prominence and that of calcaneal closing-wedge osteotomy for Haglund syndrome. Methods: From February 2009 to July 2014, 36 patients with Haglund syndrome were included.They were divided into two groups, and each group included 18 patients and underwent removal of calcaneal posterior-superior prominence and calcaneal closing-wedge osteotomy respectively.They were evaluated preoperatively and after 6 , 12 months and 24 months postoperatively by American Orthopedic Foot & Ankle Society (AOFAS) score, VAS score, VISA-A questionnaire and Maryland Foot Score...
September 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28951486/unintentional-injuries-among-refugee-and-immigrant-children-and-youth-in-ontario-canada-a-population-based-cross-sectional-study
#16
Natasha Ruth Saunders, Alison Macpherson, Jun Guan, Astrid Guttmann
BACKGROUND: Unintentional injuries are a leading reason for seeking emergency care. Refugees face vulnerabilities that may contribute to injury risk. We aimed to compare the rates of unintentional injuries in immigrant children and youth by visa class and region of origin. METHODS: Population-based, cross-sectional study of children and youth (0-24 years) from immigrant families residing in Ontario, Canada, from 2011 to 2012. Multiple linked health and administrative databases were used to describe unintentional injuries by immigration visa class and region of origin...
September 25, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28946725/hand-surgery-fellowship-selection-criteria-a-national-fellowship-director-survey
#17
Francesco M Egro, Sai K Vangala, Vu T Nguyen, Alexander M Spiess
BACKGROUND: Candidate characteristics for hand surgery fellowship training remains unknown, as very little data is available in the literature. This study aims to provide information on the criteria that are employed to select candidates for the hand surgery fellowship match. METHODS: A 38-question survey was sent in April 2015 to all Accreditation Council for Graduate Medical Education recognized hand surgery fellowship program directors (n=81) involved in the U...
September 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28934360/pkacs-attenuate-innate-antiviral-response-by-phosphorylating-visa-and-priming-it-for-march5-mediated-degradation
#18
Bing-Ru Yan, Lu Zhou, Ming-Ming Hu, Mi Li, Heng Lin, Yan Yang, Yan-Yi Wang, Hong-Bing Shu
Sensing of viral RNA by RIG-I-like receptors initiates innate antiviral response, which is mediated by the central adaptor VISA. How the RIG-I-VISA-mediated antiviral response is terminated at the late phase of infection is enigmatic. Here we identified the protein kinase A catalytic (PKAC) subunits α and β as negative regulators of RNA virus-triggered signaling in a redundant manner. Viral infection up-regulated cellular cAMP levels and activated PKACs, which then phosphorylated VISA at T54. This phosphorylation abrogated virus-induced aggregation of VISA and primed it for K48-linked polyubiquitination and degradation by the E3 ligase MARCH5, leading to attenuation of virus-triggered induction of downstream antiviral genes...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28899514/citral-a-monoterpenoid-aldehyde-interacts-synergistically-with-norfloxacin-against-methicillin-resistant-staphylococcus-aureus
#19
Priyanka Gupta, Dinesh Kumar Patel, Vivek Kumar Gupta, Anirban Pal, Sudeep Tandon, M P Darokar
BACKGROUND: Staphylococcus aureus (SA), is a major human pathogen causing wide range of clinical infections, which has been further complicated by drug resistance like methicillin resistant S. aureus (MRSA), vancomycin intermediate S. aureus (VISA)/vancomycin resistant S. aureus (VRSA), etc. The present study was aimed at determining anti-staphylococcal potential of citral against drug resistant clinical isolates alone and in combination with antibiotics. PURPOSE: To assess the potential of citral in combination with norfloxacin in treating drug resistant infections of SA...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28890239/self-help-organisations-as-patient-representatives-in-health-care-and-policy-decision-making
#20
Daniela Rojatz, Rudolf Forster
A crucial question about participation is who is legitimised, willing and capable of representing particular collectives. Social insurance health care systems tend to focus on representation by patient organisations. Self-help organisations (SHOs), as one type of 'health consumer and patient organisation', often take over this role. Research findings indicate that participation by SHOs is accompanied by high expectations, but also by concerns about the risks of instrumental abuse, overload and professionalisation...
October 2017: Health Policy
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