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https://www.readbyqxmd.com/read/28103277/protection-elicited-by-nasal-immunization-with-recombinant-pneumococcal-surface-protein-a-rpspa-adjuvanted-with-whole-cell-pertussis-vaccine-wp-against-co-colonization-of-mice-with-streptococcus-pneumoniae
#1
Rafaella O Tostes, Tasson C Rodrigues, Josefa B da Silva, Alessandra S Schanoski, Maria Leonor S Oliveira, Eliane N Miyaji
A promising alternative vaccine candidate to reduce the burden of pneumococcal diseases is the protein antigen PspA (Pneumococcal surface protein A). Since concomitant colonization with two or more pneumococcal strains is very common in children, we aimed to determine if immunization with PspA would be able to control co-colonization. We evaluated nasal immunization with recombinant PspA (rPspA) in a model of co-colonization with two strains expressing different PspAs. Mice were immunized intranasally with rPspAs from clades 1 to 4 (rPspA1, rPspA2, rPspA3 or rPspA4) using whole-cell pertussis vaccine (wP) as adjuvant...
2017: PloS One
https://www.readbyqxmd.com/read/28103262/serotype-distribution-and-antimicrobial-sensitivity-profile-of-streptococcus-pneumoniae-carried-in-healthy-toddlers-before-pcv13-introduction-in-niamey-niger
#2
Sani Ousmane, Bouli A Diallo, Rasmata Ouedraogo, Abdel-Kader A Sanda, Amadou M Soussou, Jean-Marc Collard
BACKGROUND: To mitigate the burden of pneumococcal infections in Niger, a 13-valent pneumococcal vaccine, PCV13, was introduced for routine child vaccination in July 2014. In order to provide pre-vaccine baseline data and allow appreciation of changes on carriage due to vaccination, we analyzed retrospectively pneumococcal isolates obtained from healthy, 0 to 2 year old children prior to the vaccine introduction. METHODS: From June 5, 2007, to May 26, 2008, 1200 nasopharyngeal swabs were collected from healthy 0 to 2 year old children and analyzed by standard microbiological methods...
2017: PloS One
https://www.readbyqxmd.com/read/28101913/nasopharyngeal-colonization-with-streptococcus%C3%A2-pneumoniae-triggers-dendritic-cell-dependent-antibody-responses-against-invasive-disease-in-mice
#3
Anne Dommaschk, Nadine Ding, Meritxell Tort Tarres, Lara F Bittersohl, Regina Maus, Jennifer Stolper, Danny Jonigk, Peter Braubach, Torsten Lippmann, Tobias Welte, Ulrich A Maus
Nasopharyngeal colonization with Streptococcus pneumoniae (Spn) is an important precondition for the development of pneumococcal pneumonia. At the same time, nasopharyngeal colonization with Spn has been shown to mount adaptive immune responses against Spn in mice and humans. Cellular responses of the nasopharyngeal compartment, including the nasal-associated lymphoid tissue (NALT), to pneumococcal colonization and their importance for developing adaptive immune responses are poorly defined. We show that nasopharyngeal colonization with S...
January 19, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28100596/genomic-epidemiology-of-penicillin-non-susceptible-pneumococci-with-non-vaccine-serotypes-causing-invasive-disease-in-the-usa
#4
Cheryl P Andam, Patrick K Mitchell, Alanna Callendrello, Qiuzhi Chang, Jukka Corander, Chrispin Chaguza, Lesley McGee, Bernard W Beall, William P Hanage
Conjugate vaccination against seven pneumococcal serotypes (PCV7) reduced disease prevalence due to antibiotic resistant strains throughout the 2000s; however, disease caused by resistant non-vaccine type (NVT) strains increased. Some of these emerging strains were derived from vaccine types (VT) that had changed their capsule by recombination. The introduction of vaccine targeting 13 serotypes (PCV13) in 2010 has led to concern that this scenario will repeat itself. We generated high quality draft genomes from 265 isolates of NVT pneumococci not susceptible to penicillin (PNSP) in 2009 and compared them with 581 isolates from 2012-2013, collected by the Active Bacterial Core surveillance (ABCs) of the Centers for Disease Control and Prevention (CDC)...
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28099668/developing-better-pneumococcal-vaccines-for-adults
#5
Daniel M Weinberger, Zitta B Harboe, Eugene D Shapiro
No abstract text is available yet for this article.
January 9, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28096486/phage-derived-protein-induces-increased-platelet-activation-and-is-associated-with-mortality-in-patients-with-invasive-pneumococcal-disease
#6
Rahajeng N Tunjungputri, Fredrick M Mobegi, Amelieke J Cremers, Christa E van der Gaast-de Jongh, Gerben Ferwerda, Jacques F Meis, Nel Roeleveld, Stephen D Bentley, Alexander S Pastura, Sacha A F T van Hijum, Andre J van der Ven, Quirijn de Mast, Aldert Zomer, Marien I de Jonge
: To improve our understanding about the severity of invasive pneumococcal disease (IPD), we investigated the association between the genotype of Streptococcus pneumoniae and disease outcomes for 349 bacteremic patients. A pneumococcal genome-wide association study (GWAS) demonstrated a strong correlation between 30-day mortality and the presence of the phage-derived gene pblB, encoding a platelet-binding protein whose effects on platelet activation were previously unknown. Platelets are increasingly recognized as key players of the innate immune system, and in sepsis, excessive platelet activation contributes to microvascular obstruction, tissue hypoperfusion, and finally multiorgan failure, leading to mortality...
January 17, 2017: MBio
https://www.readbyqxmd.com/read/28096183/pneumococcal-neuraminidase-a-nana-promotes-biofilm-formation-and-synergizes-with-influenza-a-virus-in-nasal-colonization-and-middle-ear-infection
#7
John T Wren, Lance K Blevins, Bing Pang, Ankita Basu Roy, Melissa B Oliver, Jennifer L Reimche, Jessie E Wozniak, Martha A Alexander-Miller, W Edward Swords
Even in the vaccine era, Streptococcus pneumoniae (pneumococcus) remains a leading cause of otitis media, a significant public health burden, in large because of its high prevalence of nasal colonization in children. The primary pneumococcal neuraminidase NanA, which is a sialidase that catalyzes the cleavage of terminal sialic acids from host glycoconjugates, is involved in both of these processes. Coinfection with influenza A virus, which also expresses a neuraminidase, exacerbates nasal colonization and disease by S...
January 17, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28095723/increased-long-term-mortality-after-survival-of-invasive-pneumococcal-disease-a-population-based-study
#8
Hans Kristian Floeystad, Are Holm, Leiv Sandvik, Didrik Frimann Vestrheim, Bjorn Brandsaeter, Dag Berild
OBJECTIVES: We studied if patients surviving hospitalization for invasive pneumococcal disease (IPD) have an increased long-term mortality. METHODS: In this population-based case-control study, we assessed adults discharged from Aker University Hospital in Oslo, Norway, from 1993 to 2008 after surviving IPD. Mortality among the study population was compared to the general Norwegian population using standardized mortality ratios (SMR). Median follow-up time was 7...
January 17, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28093834/seasonality-of-pathogens-causing-community-acquired-pneumonia
#9
Catia Cilloniz, Santiago Ewig, Albert Gabarrus, Miquel Ferrer, Jorge Puig de la Bella Casa, Josep Mensa, Antoni Torres
BACKGROUND AND OBJECTIVE: Seasonal distribution of microbial aetiology in patients with community-acquired pneumonia (CAP) may add important information both for epidemiologists and clinicians. We investigate the seasonal distribution of microbial aetiology in CAP. METHODS: This prospective observational study was carried out in the Hospital Clinic of Barcelona, Spain (January 2003-December 2014). RESULTS: We studied 4431 patients with CAP, of whom 2689 (61%) were males...
January 17, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28093269/invasive-disease-versus-urinary-antigen-confirmed-pneumococcal-community-acquired-pneumonia
#10
Adrian Ceccato, Antoni Torres, Catia Cilloniz, Rosanel Amaro, Albert Gabarrus, Eva Polverino, Elena Prina, Carolina Garcia-Vidal, Eva Muñoz-Conejero, Cristina Mendez, Isabel Cifuentes, Jorge Puig de la Bella Casa, Rosario Menendez, Michael S Niederman
OBJECTIVES: The burden of pneumococcal disease is measured only through patients with invasive pneumococcal disease. The urinary antigen test (UAT) for pneumococcus has exhibited a high sensitivity and specificity. We aimed to compare the pneumococcal pneumonias diagnosed as invasive disease with pneumococcal pneumonias defined by UAT. METHODS: Prospective observational study on consecutive non-immunosuppressed patients with community-acquired pneumonia from January 2000 to December 2014...
January 13, 2017: Chest
https://www.readbyqxmd.com/read/28088526/subcutaneous-immunization-with-streptococcus-pneumoniae-gapdh-confers-effective-protection-in-mice-via-tlr2-and-tlr4
#11
Xiaoyu Sun, Jichao Wang, Jie Zhou, Hong Wang, Xiaofang Wang, Jingwen Wu, Yujuan He, Yibing Yin, Xuemei Zhang, Wenchun Xu
The surface localized Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of Streptococcus pneumoniae is best known as housekeeping protein. Currently, GAPDH has been recognized as moonlighting protein and virulent factor. Therefore, we investigate whether GAPDH can act as a suitable vaccine candidate protein to prevent pneumococcal infection. In this study, mice received subcutaneous vaccination with recombinant GAPDH followed by challenge with D39 and 19F showing higher survival rate and lower bacterial loads in nasal washes and lung homogenates than control...
January 12, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28087317/acute-otitis-media-caused-by-streptococcus-pneumoniae-serotype-19a-st320-clone-epidemiological-and-clinical-characteristics
#12
Hsin Chi, Nan-Chang Chiu, Fu-Yuan Huang, Chyong-Hsin Hsu, Kuo-Sheng Lee, Li-Min Huang, Yu-Chia Hsieh
BACKGROUND: Streptococcus pneumoniae serotype 19A ST320, a highly multiresistant and virulent clone, has emerged as a common pathogen causing acute otitis media (AOM) in children. METHODS: Patients aged 0-18 years with AOM who presented at Mackay Memorial Hospital, Taipei, Taiwan were prospectively enrolled between December 1, 2009, and November 30, 2012. For each patient, a specimen of middle-ear fluid was obtained and cultured. S. pneumoniae isolates were tested by serotyping, antibiotic-resistance profiling, and multilocus sequence typing...
December 19, 2016: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28087148/immunogenicity-differences-of-a-15-valent-pneumococcal-polysaccharide-conjugate-vaccine-pcv15-based-on-vaccine-dose-route-of-immunization-and-mouse-strain
#13
REVIEW
Ivette Caro-Aguilar, Lani Indrawati, Robin M Kaufhold, Christine Gaunt, Yuhua Zhang, Denise K Nawrocki, Cecilia Giovarelli, Michael A Winters, William J Smith, Jon Heinrichs, Julie M Skinner
Pneumococcal disease continues to be a medical need even with very effective vaccines on the market. Globally, there are extensive research efforts to improve serotype coverage with novel vaccines; therefore, conducting preclinical studies in different animal models becomes essential. The work presented herein focuses on evaluating a 15-valent pneumococcal conjugate vaccine (PCV15) in mice. Initially we evaluated several doses of PCV15 in Balb/c mice. The optimal vaccine dose was determined to be 0.4μg per pneumococcal polysaccharide (PS) (0...
January 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28087146/pcv13-vaccinated-children-still-carrying-pcv13-additional-serotypes-show-similar-carriage-density-to-a-control-group-of-pcv7-vaccinated-children
#14
Ron Dagan, Christine Juergens, James Trammel, Scott Patterson, David Greenberg, Noga Givon-Lavi, Nurith Porat, William C Gruber, Daniel A Scott
BACKGROUND: In addition to reducing vaccine-type nasopharyngeal carriage rates, pneumococcal conjugate vaccines (PCVs) may decrease carriage density in vaccinated individuals still carrying vaccine serotypes. However, reduction of carriage density has not been systematically studied. This study compared the effect of PCV13 versus PCV7 on carriage density of the serotypes in PCV13 that are not included in PCV7. METHODS: This randomized, double-blind study was conducted in southern Israel and included Jewish and Bedouin subjects...
January 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28086930/mannose-binding-lectin-associated-serine-protease-2-masp-2-contributes-to-poor-disease-outcome-in-humans-and-mice-with-pneumococcal-meningitis
#15
E Soemirien Kasanmoentalib, Mercedes Valls Seron, Bart Ferwerda, Michael W Tanck, Aeilko H Zwinderman, Frank Baas, Arie van der Ende, Matthijs C Brouwer, Diederik van de Beek
BACKGROUND: Pneumococcal meningitis is the most common and severe form of bacterial meningitis. Fatality rates are substantial, and long-term sequelae develop in about half of survivors. Disease outcome has been related to the severity of the pro-inflammatory response in the subarachnoid space. The complement system, which mediates key inflammatory processes, has been implicated as a modulator of pneumococcal meningitis disease severity in animal studies. METHODS: We investigated mannose-binding lectin-associated serine protease (MASP-2) levels in cerebrospinal fluid (CSF) samples derived from the diagnostic lumbar puncture, which was available for 307 of 792 pneumococcal meningitis episodes included in our prospective nationwide cohort study (39%), and the association between these levels and clinical outcome...
January 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28079828/vaccination-with-10-valent-pneumococcal-conjugate-vaccine-in-infants-according-to-hiv-status
#16
Shabir A Madhi, Anthonet Koen, Lisa Jose, Nadia van Niekerk, Peter V Adrian, Clare Cutland, Nancy François, Javier Ruiz-Guiñazú, Juan-Pablo Yarzabal, Marta Moreira, Dorota Borys, Lode Schuerman
BACKGROUND: Phase III, open-label, single-center, controlled study in South Africa (ClinicalTrials.gov: NCT00829010) to evaluate immunogenicity, reactogenicity, and safety of the 10-valent pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) in human immunodeficiency virus (HIV)-infected (HIV+), HIV-exposed-uninfected (HEU), and HIV-unexposed-uninfected (HUU) children. METHODS: Children stratified by HIV status received PHiD-CV primary vaccination (age 6/10/14 weeks; coadministered with routine childhood vaccines) and booster dose (age 9-10 months)...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079621/effects-of-education-and-information-on-vaccination-behavior-in-patients-with-inflammatory-bowel-disease
#17
Sofie Coenen, Ellen Weyts, Cedric Jorissen, Paul De Munter, Maja Noman, Vera Ballet, Séverine Vermeire, Gert Van Assche, Marc Ferrante
BACKGROUND: Despite the existence of international guidelines, vaccination in patients with inflammatory bowel disease (IBD) has not been integrated optimally. We developed a thorough education program, and compared its influence on vaccination rates with routine clinical practice in a tertiary IBD center. METHODS: Between December 2014 and March 2015, we included 505 consecutive patients with IBD visiting our outpatient clinic (53% men, 72% Crohn's disease, median age 44 years)...
January 10, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28078756/infections-in-non-splenectomized-persistent-or-chronic-primary-immune-thrombocytopenia-adults-risk-factors-and-vaccination-effect
#18
Guillaume Moulis, Maryse Lapeyre-Mestre, Aurore Palmaro, Laurent Sailler
INTRODUCTION: Risk factors for infection and protective effect of vaccines in immune thrombocytopenia (ITP) patients in the era of rituximab therapy are unknown. OBJECTIVES: To assess the risk factors for serious and non-serious infections (respectively, SIs and NSIs) in non-splenectomized adults treated for persistent or chronic primary ITP, including the effect of pneumococcal and influenza vaccines. PATIENTS/METHODS: The population was the 2009-2012 FAITH cohort (n=1805), which is the cohort of all incident (newly diagnosed) primary ITP adults treated >3months in France built in the national health insurance database (SNIIRAM)...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28070732/the-clinical-and-laboratory-spectrum-of-dedicator-of-cytokinesis-8-immunodeficiency-syndrome-in-patients-with-a-unique-mutation
#19
Arnon Broides, Amarilla B Mandola, Jacov Levy, Baruch Yerushalmi, Vered Pinsk, Michal Eldan, George Shubinsky, Nurit Hadad, Rachel Levy, Amit Nahum, Miriam Ben-Harosh, Atar Lev, Amos Simon, Raz Somech
Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause a combined immunodeficiency usually diagnosed as autosomal recessive hyper IgE syndrome. We sought to reveal the varying manifestations in patients with a unique mutation in DOCK8 gene by a retrospective medical record review. Ten patients from five consanguineous families and three tribes were included. Seven patients were homozygous for the c.C5134A, p.S1711X mutation, and the remaining three patients were their siblings manifesting hyper IgE syndrome features without a genetic diagnosis...
January 10, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28070670/the-impact-of-pneumococcal-conjugate-vaccine-on-community-acquired-pneumonia-hospitalizations-in-children-with-comorbidity
#20
Ellinor Sterky, Rutger Bennet, Ann Lindstrand, Margareta Eriksson, Anna Nilsson
: The burden of community-acquired pneumonia (CAP) in high-income countries is still significant. The introduction of pneumococcal conjugate vaccines (PCV) has reduced the overall need for hospitalization for CAP. However, it is not clear whether children with underlying disease also have benefitted from the PCV immunization programme. Children 0 to <5 years of age hospitalized with CAP and discharged with an ICD-10 code of J13-J18.9 between November 1, 2005, and April 30, 2007 (pre-vaccination period), and November 1, 2010, and April 30, 2012 (post-vaccination period), were eligible for this study...
January 9, 2017: European Journal of Pediatrics
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