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https://www.readbyqxmd.com/read/28645528/long-term-sustainable-dendritic-cell-specific-depletion-murine-model-for-periodontitis-research
#1
Amanda Finger Stadler, Mitulkumar Patel, Rafal Pacholczyk, Christopher W Cutler, Roger M Arce
Dendritic cells (DCs) are specialized antigen-presenting cells that play a pivotal role in the pathogenesis of periodontitis. The use of animal models to study the role of DCs in periodontitis has been limited by lack of a method for sustained depletion of DCs. Hence, the objectives of this study were to validate the zDC-DTR knockin mouse model of conventional DCs (cDCs) depletion, as well as to investigate whether this depletion could be sustained long enough to induce alveolar bone loss in this model. zDC-DTR mice were treated with different dose regimens of diphtheria toxin (DT) to determine survival rate...
June 20, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28628446/diphtheria-in-mayotte-2007-2015
#2
Emmanuel Belchior, Sabine Henry, Edgar Badell, Louis Collet, Thierry Benoit-Cattin, Anne-Marie de Montera, Nicole Guiso, Olivier Patey, Daniel Levy-Bruhl, Laurent Filleul, Francois Chieze, Sophie Olivier
Epidemiology of diphtheria in the southwestern Indian Ocean is poorly documented. We analyzed 14 cases of infection with toxigenic Corynebacterium diphtheriae reported during 2007-2015 in Mayotte, a French department located in this region. Local control of diphtheria is needed to minimize the risk for importation of the bacterium into disease-free areas.
July 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28625884/lack-of-evidence-for-post-vaccine-onset-of-autoimmune-lymphoproliferative-disorders-during-a-nine-month-follow-up-in-multiply-vaccinated-italian-military
#3
Claudia Ferlito, Vincenzo Barnaba, Sergio Abrignani, Mauro Bombaci, Alessandro Sette, John Sidney, Roberto Biselli, Enrico Tomao, Maria Sofia Cattaruzza, Valentina Germano, Michela Ileen Biondo, Gerardo Salerno, Patrizia Lulli, Sara Caporuscio, Andrea Picchianti Diamanti, Mirella Falco, Valentina Biselli, Patrizia Cardelli, Alberto Autore, Elena Lucertini, Donato Pompeo De Cesare, Mario Stefano Peragallo, Florigio Lista, Carmela Martire, Simonetta Salemi, Roberto Nisini, Raffaele D'Amelio
Anecdotal case reports, amplified by mass media and internet-based opinion groups, have recently indicated vaccinations as possibly responsible for autoimmunity/lymphoproliferation development. Multiply vaccinated Italian military personnel (group 1, operating in Italy, group 2, operating in Lebanon) were followed-up for nine months to monitor possible post-vaccine autoimmunity/lymphoproliferation onset. No serious adverse event was noticed in both groups. Multivariate analysis of intergroup differences only showed a significant association between lymphocyte increase and tetanus/diphtheria vaccine administration...
June 15, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28621647/timeliness-and-completeness-of-routine-childhood-vaccinations-in-children-by-two-years-of-age-in-alberta-canada
#4
Vineet Saini, Shannon E MacDonald, Deborah A McNeil, Sheila W McDonald, James D Kellner, Sarah A Edwards, Victoria Stagg, Suzanne Tough
OBJECTIVES: Assessing timeliness and completeness of vaccine administration is important for evaluating the effectiveness of immunization programs. Few studies have reported timeliness, particularly in Canada. The objective of this study was to examine timeliness of the receipt of vaccination for each routine childhood recommended vaccine by 24 months of age among children in a community-based pregnancy cohort in Calgary, Alberta. METHODS: Survey data from a community-based pregnancy cohort in Alberta were linked to Public Health vaccination records of children (n = 2763)...
June 16, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/28619415/international-travelers-sociodemographic-health-and-travel-characteristics-an-italian-study
#5
Gianmarco Troiano, Astrid Mercone, Alessandra Bagnoli, Nicola Nante
BACKGROUND: Approximately the 8% of travelers requires medical care, with the diagnosis of a vaccine-preventable disease. The aim of our study was to analyze the socio-demographic, health and travel characteristics of the Italian international travelers. METHODS: We conducted a cross sectional study from January 2015 to June 2016, at the Travel Medicine Clinic of Siena, asking the doctor to interview patients who attended the Clinic, recording socio-demographic and travel information, malaria prophylaxis, vaccinations...
March 2017: Annals of Global Health
https://www.readbyqxmd.com/read/28617860/increasing-prevalence-of-infectious-diseases-in-asylum-seekers-at-a-tertiary-care-hospital-in-switzerland
#6
Constantine Bloch-Infanger, Veronika Bättig, Jürg Kremo, Andreas F Widmer, Adrian Egli, Roland Bingisser, Manuel Battegay, Stefan Erb
OBJECTIVE: The increasing number of refugees seeking asylum in Europe in recent years poses new challenges for the healthcare systems in the destination countries. The goal of the study was to describe the evolution of medical problems of asylum seekers at a tertiary care centre in Switzerland. METHODS: At the University Hospital Basel, we compared all asylum seekers during two 1-year time periods in 2004/05 and 2014/15 concerning demographic characteristics and reasons for referrals and hospitalizations...
2017: PloS One
https://www.readbyqxmd.com/read/28611629/cutaneous-corynebacterium-infection-presenting-with-disseminated-skin-nodules-and-ulceration
#7
Antonios G A Kolios, Antonio Cozzio, Annelies S Zinkernagel, Lars E French, Thomas M Kündig
In the context of the European migrant crisis, more and more cases of cutaneous diphtheria are seen. A typical presentation includes painful cutaneous ulcerations with grayish-whitish pseudomembranes. Here we present 2 male Eritrean patients suffering from cutaneous nontoxigenic Corynebacterium diphtheriae (patient 1) and Corynebacterium striatum (patient 2) infection.
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28608671/conformational-control-of-udp-galactopyranose-mutase-inhibition
#8
Kittikhun Wangkanont, Valerie J Winton, Katrina T Forest, Laura L Kiessling
UDP-galactopyranose mutase (Glf or UGM) catalyzes the formation of uridine 5'-diphosphate-α-D-galactofuranose (UDP-Galf) from UDP-galactopyranose (UDP-Galp). The enzyme is required for the production of Galf-containing glycans. UGM is absent in mammals, but members of the Corynebacterineae suborder require UGM for cell envelope biosynthesis. The need for UGM in some pathogens has prompted the search for inhibitors that could serve as antibiotic leads. Optimizing inhibitor potency, however, has been challenging...
June 13, 2017: Biochemistry
https://www.readbyqxmd.com/read/28606182/microglia-limit-the-expansion-of-%C3%AE-amyloid-plaques-in-a-mouse-model-of-alzheimer-s-disease
#9
Ruohe Zhao, Wanling Hu, Julia Tsai, Wei Li, Wen-Biao Gan
BACKGROUND: Microglia are known as resident immune cells in the brain. β-amyloid (Aβ) plaques in the brain of Alzheimer's disease (AD) are surrounded by microglia, but whether and how microglia affect the formation and maintenance of plaques remains controversial. METHODS: We depleted microglia by injecting diphtheria toxin (DT) in CX 3 CR1 (CreER/+) :R26 (DTR/+) (CX 3 CR1-iDTR) mice crossed with APPswe/PSEN1dE9 (APP/PS1) mice. Intravital time-lapse imaging was performed to examine changes in the number and size of Congo Red-labeled amyloid plaques over 1-2 weeks...
June 12, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28604067/resveratrol-improves-cell-cycle-arrest-in-chronic-prostatitis-rats-by-c-kit-scf-suppression
#10
Yi He, Huizhi Zeng, Yang Yu, Jiashu Zhang, Xiaona Zeng, Fengtao Gong, Qi Liu, Bo Yang
Chronic prostatitis (CP) with complex pathogenesis is difficult for treatment. c-kit has been associated with the control of cell proliferation of prostate cells. This study aims to evaluate the role of resveratrol, an activator of Sirt1, in regulating the expression of c-kit in CP and investigate the consequent effects on cell cycle. Rat model of CP was established through subcutaneous injections of diphtheria-pertussis-tetanus vaccine and subsequently treated with resveratrol. Hematoxylin and eosin staining was performed to identify the histopathological changes in prostates...
June 12, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28602605/vaccination-in-newly-arrived-immigrants-to-the-european-union
#11
Roman Prymula, Jana Shaw, Roman Chlibek, Ingrid Urbancikova, Karolina Prymulova
The challenge of assimilating millions of immigrants in the European region each year presents significant socioeconomic issues. Among them is the threat of vaccine preventable diseases (VPDs) disease transmission within immigrant groups and the broader population given the permeability of nation state borders. A total of 3.8 million people immigrated to the European Union (EU) in 2014, among those were 1.6 million non-EU nationals. While vaccines have markedly reduced the transmission of disease, clusters of under-vaccinated individuals potentiate the rapid transmission of once-eradicated or controlled diseases...
June 8, 2017: Vaccine
https://www.readbyqxmd.com/read/28601852/diphtheria-revisited
#12
Surendra B Mathur, Sharmila B Mukherjee
No abstract text is available yet for this article.
May 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28599793/a-cross-reacting-material-crm197-conjugate-vaccine-induces-diphtheria-toxin-neutralizing-antibody-response-in-children-and-adolescents-infected-or-not-with-hiv
#13
Giselle P Silva, Rafaela S Santos, Wânia F Pereira-Manfro, Bianca Ferreira, Daniella M Barreto, Ana Cristina C Frota, Cristina B Hofer, Lucimar G Milagres
Anti-diphtheria antibody levels decrease with aging, and frequent booster vaccinations are required to maintain herd immunity. We analyzed the diphtheria toxin neutralizing antibody (DT-Nab) response induced by a conjugate vaccine (meningococcal C polysaccharide-CRM197) in HIV-vertically infected (HI) children and adolescents and healthy controls (HC) with matched age. We report the association of DT-Nab with the bactericidal antibodies to serogroup C meningococcus (MenC). Before vaccination, 21 HI patients (50%) had no protection against diphtheria (≤0...
June 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28599215/mathematical-modeling-of-diphtheria-transmission-in-thailand
#14
Kan Sornbundit, Wannapong Triampo, Charin Modchang
In this work, a mathematical model for describing diphtheria transmission in Thailand is proposed. Based on the course of diphtheria infection, the population is divided into 8 epidemiological classes, namely, susceptible, symptomatic infectious, asymptomatic infectious, carrier with full natural-acquired immunity, carrier with partial natural-acquired immunity, individual with full vaccine-induced immunity, and individual with partial vaccine-induced immunity. Parameter values in the model were either directly obtained from the literature, estimated from available data, or estimated by means of sensitivity analysis...
June 2, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28598302/multi-locus-variable-number-tandem-repeat-analysis-of-bordetella-pertussis-isolates-circulating-in-poland-in-the-period-1959-2013
#15
Ewa Mosiej, Katarzyna Krysztopa-Grzybowska, Maciej Polak, Marta Prygiel, Anna Lutyńska
PURPOSE: Despite the long history of pertussis vaccination and high vaccination coverage in Poland and many other developed countries, pertussis incidence rates have increased substantially, making whooping cough one of the most prevalent vaccine-preventable diseases. Among the factors potentially involved in pertussis resurgence, the adaptation of the Bordetella pertussis population to country-specific vaccine-induced immunity through selection of non-vaccine-type strains still needs detailed studies...
June 9, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28596049/modern-science-for-better-quality-control-of-medicinal-products-towards-global-harmonization-of-3rs-in-biologicals-the-report-of-an-epaa-workshop
#16
Katrin Schutte, Anna Szczepanska, Marlies Halder, Klaus Cussler, Ursula G Sauer, Catrina Stirling, Sylvie Uhlrich, Iwona Wilk-Zasadna, David John, Martin Bopst, Joerg Garbe, Harrie L Glansbeek, Robin Levis, Pieter-Jan Serreyn, Dean Smith, Paul Stickings
This article summarizes the outcome of an international workshop organized by the European Partnership for Alternative Approaches to Animal Testing (EPAA) on Modern science for better quality control of medicinal products: Towards global harmonization of 3Rs in biologicals. As regards the safety testing of biologicals, the workshop participants agreed to actively encourage the deletion of abnormal toxicity tests and target animal batch safety tests from all relevant legal requirements and guidance documents (country-specific guidelines, pharmacopoeia monographs, WHO recommendations)...
June 5, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28591046/immunogenicity-study-to-investigate-the-interchangeability-among-three-different-types-of-polio-vaccine-a-cohort-study-in-japan
#17
Satoko Ohfuji, Kazuya Ito, Motoki Ishibashi, Shizuo Shindo, Yoshio Takasaki, Takashi Yokoyama, Takato Yokoyama, Yuji Yamashita, Keigo Shibao, Takashi Nakano, Tomomi Tsuru, Shin Irie, Yoshio Hirota
In Japan, the routine immunization program with oral polio vaccine (OPV) has been suspended since September 2012, when a program with 4 doses of inactivated monovalent polio vaccine (IPV) or quadrivalent vaccine against diphtheria, pertussis, and tetanus with IPV (DTaP-IPV) was introduced. The aim of this study was to examine the interchangeability among these 3 types of polio vaccines.We conducted a prospective cohort study at 5 pediatric clinics in Japan. A total of 153 infants were assigned to 1 of the 4 groups by considering the vaccination history of OPV and trivalent vaccine against DTaP...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28585776/comparison-of-adverse-events-following-pentavalent-and-diphtheria-tetanus-pertussis-vaccines-among-nigerian-children
#18
Ayebo Evawere Sadoh, Damian Uchechukwu Nwaneri, Bamidele Charity Ogboghodo, Wilson Ehidiamen Sadoh
INTRODUCTION: Adverse events following immunization (AEFI) may follow the use of any vaccine. There is thus a need for documentation of the types and prevalence of AEFIs for each vaccine and early identification of new events or those occurring at rates higher than expected. When one vaccine replaces another, it is important to document the safety of the new vaccine as well as compare to that of the old. In this study, we aimed to document the AEFIs following the use of pentavalent vaccine recently introduced into the National Programme on Immunization and compare with those of diphtheria-tetanus-pertussis (DTwP) vaccine which it replaced...
June 6, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28583305/immunogenicity-and-safety-of-a-new-hexavalent-vaccine-dtap5-ipv-hb-hib-administered-in-a-mixed-primary-series-schedule-with-a-pentavalent-vaccine-dtap5-ipv-hib
#19
Federico Martinón-Torres, Florence Boisnard, Stéphane Thomas, Christine Sadorge, Ray Borrow
DTaP5-IPV-HB-Hib vaccine is a fully-liquid, combination hexavalent vaccine. This phase III, open-label, multicentre study conducted in Spain, evaluated the immune response to all DTaP5-IPV-HB-Hib antigens when the vaccine was used in a mixed hexa/penta/hexa primary series. Infants (who had received one dose of hepatitis B vaccine at birth) received a mixed schedule including DTaP5-IPV-HB-Hib (PRP-OMP conjugate) at 2 and 6months of age, DTaP5-IPV-Hib at 4months, meningococcal serogroup C conjugate (MCC) vaccine at 2 and 4months, and routine rotavirus and pneumococcal vaccination...
June 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28579170/vaccination-coverage-in-a-cohort-of-hiv-infected-patients-receiving-care-at-an-aids-outpatient-clinic-in-esp%C3%A3-rito-santo-brazil
#20
Lauro Ferreira da Silva Pinto Neto, Julia Vescovi Vieira, Nathália Rossoni Ronchi
This cross-sectional study assessed the immunization status of human immune deficiency virus (HIV)-infected patients receiving care at an outpatient clinic in Brazil. The sociodemographic characteristics, CD4 count and HIV viral load of 281 out of 612 adult outpatients were analyzed. A total of 331 patients were excluded because of no availability of vaccination cards. Chi-square or Fisher's exact test were used. Immunization coverage was higher for diphtheria/tetanus (59.79%) and hepatitis B (56.7%), and lowest for hepatitis A (6...
June 1, 2017: Brazilian Journal of Infectious Diseases
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