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https://www.readbyqxmd.com/read/28441105/transcriptomic-dissection-of-the-horizontally-acquired-response-regulator-esrb-reveals-its-global-regulatory-roles-in-the-physiological-adaptation-and-activation-of-t3ss-and-the-cognate-effector-repertoire-in-edwardsiella-piscicida-during-infection-towards
#1
Yang Liu, Luyao Zhao, Minjun Yang, Kaiyu Yin, Xiaohui Zhou, Ka Yin Leung, Qin Liu, Yuanxing Zhang, Qiyao Wang
Edwardsiella piscicida is the leading pathogen threatening worldwide aquaculture industries. The two-component system (TCS) EsrA-EsrB is essential for the pathogenesis of this bacterium. However, little is known about the regulon and regulatory mechanism of EsrA-EsrB or about the factors that mediate the interaction of TCS with bacterial hosts. Here, our RNA-seq analysis indicated that EsrB strongly induces type III and type VI secretion systems (T3/T6SS) expression and that it modulates the expression of both physiology- and virulence-associated genes in E...
April 25, 2017: Virulence
https://www.readbyqxmd.com/read/28441062/measles-cases-among-adolescents-in-southern-pakistan-2012-2015-the-case-for-revisiting-vaccination-strategies
#2
Sadia Shakoor, Erum Khan, Muhammad Imran Rajput, Wali Muhammad Rahimoon
AIMS: Surveillance of adult measles in Pakistan is a challenge as it does not enjoy the status of a reportable disease unlike childhood cases and therefore cases remain undetected and unreported or misdiagnosed. Consequently no data or estimates of young adult cases, seroprevalence, or estimates of susceptible preadolescent or young adult population exist. We have presented both laboratory conformed and clinically suspected cases of measles occurring in adolescents and adults in the southern province of Sindh in Pakistan...
April 25, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28436064/the-changing-landscape-of-cervical-screening-what-does-the-future-hold-for-primary-care
#3
L Marlow, J Waller
The landscape of cervical cancer prevention is changing in many countries thanks to the introduction of vaccination against high-risk types of human papillomavirus (HPV) and the incorporation of HPV DNA testing into cervical screening algorithms. In addition to this, uptake of screening is falling year on year in the UK and elsewhere. These factors present challenges and opportunities for health professionals working in primary care-in terms of communicating programmatic changes to women; responding to questions about the meaning and implications of HPV test results; and delivering interventions to increase screening uptake...
April 23, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28434689/early-childhood-transmission-of-hepatitis-b-prior-to-the-first-hepatitis-b-vaccine-dose-is-rare-among-babies-born-to-hiv-infected-and-non-hiv-infected-mothers-in-gulu-uganda
#4
E Seremba, J P Van Geertruyden, R Ssenyonga, C K Opio, J M Kaducu, J B Sempa, R Colebunders, P Ocama
BACKGROUND: Hepatitis B (HBV) in sub-Saharan Africa is believed to be horizontally acquired. However, because of the high HBV prevalence in northern Uganda, no hepatitis B vaccination at birth and no access to HBV immunoglobulin, we hypothesize that vertical transmission also could also play an important role. We therefore investigated the incidence of HBV among babies presenting for their first HBV vaccine dose in Gulu, Uganda. METHODS: We recruited mothers and their babies (at least 6-week old) presenting for their postnatal care and first HBV vaccine dose respectively...
April 20, 2017: Vaccine
https://www.readbyqxmd.com/read/28425928/porcine-circoviruses-and-xenotransplantation
#5
REVIEW
Joachim Denner, Annette Mankertz
Allotransplantation and xenotransplantation may be associated with the transmission of pathogens from the donor to the recipient. Whereas in the case of allotransplantation the transmitted microorganisms and their pathogenic effect are well characterized, the possible influence of porcine microorganisms on humans is mostly unknown. Porcine circoviruses (PCVs) are common in pig breeds and they belong to porcine microorganisms that still have not been fully addressed in terms of evaluating the potential risk of xenotransplantation using pig cells, tissues, and organs...
April 20, 2017: Viruses
https://www.readbyqxmd.com/read/28421368/recombinant-foot-and-mouth-disease-virus-fmdv-non-structural-protein-3a-fused-to-enhanced-green-fluorescent-protein-egfp-as-a-candidate-probe-to-identify-fmdv-infected-cattle-in-serosurveys
#6
Cecilia M Lotufo, Ingrid E Bergmann, Nora M Mattion, Maximiliano Wilda, Pablo R Grigera
Recombinant protein 3A-EGFP, a fusion construct between foot-and-mouth disease virus (FMDV) non-structural protein 3A and the enhanced green fluorescent protein (EGFP) was expressed in BL21-DE3 cells. The identity of the partially purified protein 3A-EGFP was confirmed by its reactivity with sera from cattle infected with FMDV and with a monoclonal antibody specific for FMDV-3ABC (MAb3H7) in Western blot assays. No reactivity was observed with sera from uninfected vaccinated animals. The performance of 3A-EGFP as an antigen in an indirect enzyme-linked immunosorbent assay (ELISA) was assessed and compared with that of a previously developed and validated capture ELISA that uses a 3ABC recombinant antigen (3ABC ELISA) and has been widely applied for serological surveys in Argentina...
April 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28420056/treatment-with-belimumab-in-systemic-lupus-erythematosus-does-not-impair-antibody-response-to-13-valent-pneumococcal-conjugate-vaccine
#7
J Nagel, T Saxne, P Geborek, A A Bengtsson, S Jacobsen, C Svaerke Joergensen, J-Å Nilsson, L Skattum, A Jönsen, M C Kapetanovic
Background/purpose The objective of this study was to explore the impact of systemic lupus erythematosus and belimumab given in addition to standard of care therapy on 13-valent conjugated pneumococcal vaccine (PCV13) response. Methods Forty-seven systemic lupus erythematosus patients and 21 healthy controls were immunized with a single dose of 13-valent conjugated pneumococcal vaccine. Forty systemic lupus erythematosus patients were treated with traditional disease-modifying anti rheumatic drugs, 11 of those received belimumab in addition, and 32 patients were treated with concomitant prednisolone...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28416263/the-keys-to-conservative-treatment-of-early-stage-squamous-cell-carcinoma-of-the-tonsillar-region
#8
O Laccourreye, P Castelnau-Marchand, F Rubin, C Badoual, P Halimi, P Giraud
To analyze the medical literature devoted to work-up, epidemiology, local control, survival, complications and sequelae after conservative treatment for early-stage squamous cell carcinoma of the tonsillar region. An analysis of the PubMed (1975-2016) database was performed using the following keywords and associations: "tonsil/tonsillar region/oropharynx" AND "squamous cell carcinoma" AND "early-stage (I-II; T1-2N0M0)" AND "radiation therapy/radiotherapy" OR "conservative surgery/oropharyngectomy/transoral surgery/radical tonsillectomy"...
April 14, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28410940/stability-of-different-influenza-subtypes-how-can-high-hydrostatic-pressure-be-a-useful-tool-for-vaccine-development
#9
Carlos Henrique Dumard, Shana P C Barroso, Ana Clara V Santos, Nathalia S Alves, José Nelson S S Couceiro, Andre M O Gomes, Patricia S Santos, Jerson L Silva, Andréa C Oliveira
BACKGROUND: Avian influenza A viruses can cross naturally into mammals and cause severe diseases, as observed for H5N1. The high lethality of human infections causes major concerns about the real risk of a possible pandemic of severe diseases to which human susceptibility may be high and universal. High hydrostatic pressure (HHP) is a valuable tool for studies regarding the folding of proteins and the assembly of macromolecular structures such as viruses; furthermore, HHP has already been demonstrated to promote viral inactivation...
April 6, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/28404847/characterization-of-pre-f-gcn4t-a-modified-human-respiratory-syncytial-virus-fusion-protein-stabilized-in-a-non-cleaved-pre-fusion-conformation
#10
Normand Blais, Martin Gagné, Yoshitomo Hamuro, Patrick Rheault, Martine Boyer, Ann-Muriel Steff, Guy Baudoux, Vincent Dewar, Josée Demers, Jean-Louis Ruelle, Denis Martin
Human respiratory syncytial virus (hRSV) fusion protein (F) is considered a major target of the neutralizing antibody response to hRSV. This glycoprotein undergoes a major structural shift from pre- (pre-F) to post-fusion (post-F) state at the time of virus-host cell membrane fusion. Recent evidences suggest that the pre-F state may be a superior target for neutralizing antibodies than post-F. Therefore, for vaccine purposes, we have designed and characterized a recombinant hRSV F protein, called Pre-F-GCN4t, stabilized in a pre-F conformation...
April 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28402385/does-choice-of-influenza-vaccine-type-change-disease-burden-and-cost-effectiveness-in-the-united-states-an-agent-based-modeling-study
#11
Jay V DePasse, Kenneth J Smith, Jonathan M Raviotta, Eunha Shim, Mary Patricia Nowalk, Richard K Zimmerman, Shawn T Brown
Offering a choice of influenza vaccine type may increase vaccine coverage and reduce disease burden, but it is more costly. This study calculated the public health impact and cost-effectiveness of 4 strategies: no choice, pediatric choice, adult choice, or choice for both age groups. Using agent-based modeling, individuals were simulated as they interacted with others, and influenza was tracked as it spread through a population in Washington, DC. Influenza vaccination coverage derived from data from the Centers for Disease Control and Prevention was increased by 6...
April 10, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28399355/estimation-of-the-population-susceptibility-against-measles-in-slovakia
#12
Jana Zibolenová, Zuzana Chladná, Viera Švihrová, Tibor Baška, Iveta Waczulíková, Henrieta Hudečková
OBJECTIVE: In Slovakia, thanks to a highly effective vaccination programme, no domestic cases of measles have been reported since 1999. However, there are several outbreaks of measles currently hitting some countries in Europe. Difficulties in reaching the goal of measles elimination make it necessary to monitor the status of the population susceptibility to prevent similar outbreaks in the future. We hypothesize that immunity wanes overtime, which can substantially impact the population susceptibility...
March 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/28399059/rotavirus-vaccination-and-the-risk-of-celiac-disease-or-type-1-diabetes-in-finnish-children-at-early-life
#13
Vaarala Outi, Jokinen Jukka, Lahdenkari Mika, Leino Tuija
Rotavirus infection has been suggested as a trigger of type 1 diabetes (T1D) and celiac disease (CD) related autoimmunity. We carried out a nationwide population-based cohort study evaluating whether prevention of rotavirus infection with vaccination affects the risk of CD and T1D diagnosed during 2009-2014 in Finnish children by comparing vaccinated and unvaccinated children in a cohort born in 2009-2010. Nationwide rotavirus vaccination records were collected from health-care databases during 2009-2011 and validated for a sample of 495 children born 7/2009-12/2009...
April 10, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28398421/herpes-zoster-following-varicella-vaccination-in-children
#14
Darren J Guffey, Sarah B Koch, Leonora Bomar, William W Huang
Herpes zoster (HZ), or shingles, is commonly seen in older adults but does occur in children. Routine administration of the varicella vaccine started in 1995 in the United States; since then, the incidence of varicella and HZ has declined. We report a case of HZ in an otherwise healthy 19-month-old boy who had been vaccinated at 13 months of age and recovered fully after acyclovir treatment. We review previously reported cases of HZ in healthy vaccinated children.
March 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28396438/emerging-infectious-diseases-a-proactive-approach
#15
David E Bloom, Steven Black, Rino Rappuoli
Infectious diseases are now emerging or reemerging almost every year. This trend will continue because a number of factors, including the increased global population, aging, travel, urbanization, and climate change, favor the emergence, evolution, and spread of new pathogens. The approach used so far for emerging infectious diseases (EIDs) does not work from the technical point of view, and it is not sustainable. However, the advent of platform technologies offers vaccine manufacturers an opportunity to develop new vaccines faster and to reduce the investment to build manufacturing facilities, in addition to allowing for the possible streamlining of regulatory processes...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28396421/antigenicity-defined-conformations-of-an-extremely-neutralization-resistant-hiv-1-envelope-spike
#16
Yongfei Cai, Selen Karaca-Griffin, Jia Chen, Sai Tian, Nicholas Fredette, Christine E Linton, Sophia Rits-Volloch, Jianming Lu, Kshitij Wagh, James Theiler, Bette Korber, Michael S Seaman, Stephen C Harrison, Andrea Carfi, Bing Chen
The extraordinary genetic diversity of the HIV-1 envelope spike [Env; trimeric (gp160)3, cleaved to (gp120/gp41)3] poses challenges for vaccine development. Envs of different clinical isolates exhibit different sensitivities to antibody-mediated neutralization. Envs of difficult-to-neutralize viruses are thought to be more stable and conformationally homogeneous trimers than those of easy-to-neutralize viruses, thereby providing more effective concealment of conserved, functionally critical sites. In this study we have characterized the antigenic properties of an Env derived from one of the most neutralization-resistant HIV-1 isolates, CH120...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28376987/the-utility-of-continuous-temperature-monitoring-of-refrigerators-in-a-long-term-care-facility
#17
Chad Worz, Josh Postolski, Kevin Williams
BACKGROUND: It is the current practice in most long-term care facilities to use manual logs when documenting refrigerator temperatures. This process is commonly associated with poor or fabricated compliance, little oversight, and documentation errors, both because of overt omissions and unsubstantiated values. It is also well-established that medication storage requirements are mandated by the Centers for Medicare & Medicaid Services (CMS). This analysis demonstrates the potential risk of poor cold-chain management of medications and establishes the possible utility of digitally recorded continuous temperature monitoring over manual logs...
April 1, 2017: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28374129/dot-immunoassay-for-the-simultaneous-determination-of-postvaccination-immunity-against-pertussis-diphtheria-and-tetanus
#18
Pavel Khramtsov, Maria Bochkova, Valeria Timganova, Svetlana Zamorina, Mikhail Rayev
A dot immunoassay for simultaneous semiquantitative detection of IgG against tetanus toxoid (Ttx) and diphtheria toxoid (Dtx) and qualitative detection of anti-Bordetella pertussis IgGs in human blood serum using carbon nanoparticles functionalized with streptococcal protein G was developed. Inactivated B. pertussis cells in suspension form were used as an antigen in the immunoassay. Pertussis, tetanus, and diphtheria antigens were separately spotted onto nitrocellulose strips, and then the immunostrips were successively incubated with blood sera and a suspension of carbon nanoparticles...
April 3, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28368526/licensed-meningococcal-serogroup-b-vaccine-induced-immunity-against-invasive-disease-does-not-reflect-protection-against-nasal-colonization-in-a-humanized-mouse-model
#19
Carolyn M Buckwalter, Elissa G Currie, Raymond S W Tsang, Scott D Gray-Owen
Background: The 4CMenB vaccine is an outer membrane vesicle and recombinant protein-based vaccine recently licensed to protect against serogroup B meningococcal disease. It remains unknown whether this vaccine will prevent carriage or transmission, key aspects in long-term vaccine success and disease eradication. Methods: Employing a 'humanized' transgenic mouse model of nasal colonization, a systematic approach was taken to estimate the potential for carriage prevention against antigenically-diverse Neisseria meningitidis strains, and to compare this protection to an invasive meningococcal disease challenge model...
March 27, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28362642/assessment-of-virus-interference-in-a-test-negative-study-of-influenza-vaccine-effectiveness
#20
Shuo Feng, Ashley L Fowlkes, Andrea Steffens, Lyn Finelli, Benjamin J Cowling
BACKGROUND: The observational test-negative study design is used to estimate vaccine effectiveness against influenza virus infection. An important assumption of the test-negative design is that vaccination does not affect the risk of infection with another virus. If such virus interference occurred, detection of other respiratory viruses would be more common among influenza vaccine recipients and vaccine effectiveness estimates could differ. We evaluated the potential for virus interference using data from the Influenza Incidence Surveillance Project...
March 30, 2017: Epidemiology
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