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Philippe Hermand, Annick Vandercammen, Emmanuel Mertens, Emmanuel Di Paolo, Vincent Verlant, Philippe Denoël, Fabrice Godfroid
The use of protein antigens able to protect against the majority of Streptococcus pneumoniae serotypes is envisaged as stand-alone and/or complement to the current capsular polysaccharide-based pneumococcal vaccines. Pneumolysin (Ply) is a key virulence factor that is highly conserved in amino acid sequence across pneumococcal serotypes, and therefore may be considered as a vaccine target. However, native Ply cannot be used in vaccines due to its intrinsic cytolytic activity. In the present work a completely, irreversibly detoxified pneumolysin (dPly) has been generated using an optimized formaldehyde treatment...
October 21, 2016: Human Vaccines & Immunotherapeutics
Valentina Talarico, Monica Aloe, Alice Monzani, Roberto Miniero, Gianni Bona
Hemolytic uremic syndrome (HUS) is a thrombotic microangiopathy defined by thrombocytopenia, non-immune microangiopathic hemolytic anemia and acute renal failure. HUS is typically classified into two primary types: 1) HUS due to infections, often associated with diarrhea (D+HUS, Shiga toxin-producing Escherichia Coli-HUS), with the rare exception of HUS due to a severe disseminated infection caused by Streptococcus; 2) HUS related to complement, such HUS is also known as "atypical HUS" and is not diarrhea associated (D-HUS, aHUS); but recent studies have shown other forms of HUS, that can occur in the course of systemic diseases or physiopathological conditions such as pregnancy, after transplantation or after drug assumption...
December 2016: Minerva Pediatrica
Roger R Fan, Leigh M Howard, Marie R Griffin, Kathryn M Edwards, Yuwei Zhu, John V Williams, Jorge E Vidal, Keith P Klugman, Ana I Gil, Claudio F Lanata, Carlos G Grijalva
We examined nasopharyngeal pneumococcal colonization density patterns surrounding acute respiratory illnesses (ARI) in young children in Peru. Pneumococcal densities were dynamic, gradually increasing leading up to an ARI, peaking during the ARI, and decreasing after the ARI. Rhinovirus co-infection was associated with higher pneumococcal densities.
November 2016: Emerging Infectious Diseases
Khosro Adibkia, Golrokh Khorasani, Shahriar Payab, Farzaneh Lotfipour
Purpose: Bacterial pneumonia is a common lung infection caused by different types of bacteria. Azithromycin (AZI), an azalide antibiotic, is widely used to manage pneumococcal infections. Studies have shown that antibiotics in nanocarriers may lead to increased antibacterial activity and reduced toxicity. The aim of this work was to valuate in vitro antibacterial performance azithromycin-Eudragit RS100 nano-formulations against Streptococcus pneumoniae and Staphylococcus aureus. Methods: AZI-Eudragit RS100 nanoparticles were prepared via electrospinning technique and the in vitro antibacterial performance against S...
September 2016: Advanced Pharmaceutical Bulletin
Angel Vila-Córcoles, Olga Ochoa-Gondar
There are currently two anti-pneumococcal vaccines available for use in adults: the classical 23-valent polysaccharide pneumococcal vaccine (PPV23) and the new 13-valent pneumococcal conjugate vaccine (PCV13). The main advantage of the PCV13 is the potentially better immunogenicity, with its major disadvantages being the higher cost and the lower serotype-coverage than the PPV23. The currently available scientific evidence supports the following basic recommendations: (i)among adults with greatest risk (basically asplenia and immunocompromised), a dual vaccination (PCV13+PPV23) is recommended; (ii)among adults with increased risk (basically persons >65years-old and patients 15-64years with chronic pulmonary or heart disease, diabetes and/or alcoholism), a single vaccination with PPV23 is recommended (single dose in primo-vaccinated >65years; re-vaccination at 5-10years in those primo-vaccinated <65years-old); and (iii) in the rest of adults (risk normal/low) vaccination is not recommended...
October 17, 2016: Atencion Primaria
J E Isenor, N T Edwards, T A Alia, K L Slayter, D M MacDougall, S A McNeil, S K Bowles
BACKGROUND: Underutilization of vaccination programs remains a significant public health concern. Pharmacists serve as educators, facilitators, and in some jurisdictions, as administrators of vaccines. Though pharmacists have been involved with immunizations in various ways for many years, there has yet to be a systematic review assessing the impact of pharmacists as immunizers in these three roles. OBJECTIVE: To complete a systematic review of the literature on the impact of pharmacists as educators, facilitators, and administrators of vaccines on immunization rates...
October 17, 2016: Vaccine
Anagha Loharikar, Laure Dumolard, Susan Chu, Terri Hyde, Tracey Goodman, Carsten Mantel
Since the global Expanded Program on Immunization (EPI) was launched in 1974, vaccination against six diseases (tuberculosis, polio, diphtheria, tetanus, pertussis, and measles) has prevented millions of deaths and disabilities (1). Significant advances have been made in the development and introduction of vaccines, and licensed vaccines are now available to prevent 25 diseases (2,3). Historically, new vaccines only became available in low-income and middle-income countries decades after being introduced in high-income countries...
October 21, 2016: MMWR. Morbidity and Mortality Weekly Report
Madhu M Ouseph, Malorie Simons, Diana O Treaba, Evgeny Yakirevich, Peter H Green, Govind Bhagat, Steven F Moss, Shamlal Mangray
We present a 59-year-old male with poorly controlled celiac disease (CD) and fatal Streptococcus pneumoniae sepsis, describe the morphologic findings, and stress the need for monitoring splenic function and pneumococcal vaccination in these patients.
August 2016: ACG Case Reports Journal
Elizabeth M Todd, Julie Y Zhou, Taylor P Szasz, Lauren E Deady, June A D'Angelo, Matthew D Cheung, Alfred H J Kim, Sharon Celeste Morley
Alveolar macrophages are lung-resident sentinel cells that develop perinatally and protect against pulmonary infection. Molecular mechanisms controlling alveolar macrophage generation have not been fully defined. Here we show that the actin-bundling protein L-plastin (LPL) is required for the perinatal development of alveolar macrophages. Mice expressing a conditional allele of LPL (CD11c.Cre(pos)-LPL(fl/fl)) exhibited significant reductions in alveolar macrophages and failed to effectively clear pulmonary pneumococcal infection, showing that immunodeficiency results from reduced alveolar macrophage numbers...
October 6, 2016: Blood
Francesco Blasi, Murat Akova, Paolo Bonanni, Nathalie Dartois, Evelyne Sauty, Chris Webber, Antoni Torres
Pneumococcal pneumonia remains a clear unmet medical need for adults worldwide. Despite advances in vaccine technology, vaccination coverage remains low, putting many people at risk of significant morbidity and mortality. The herd effect seen with paediatric vaccination is not enough to protect all older and vulnerable people in the community, and more needs to be done to increase the uptake of pneumococcal vaccination in adults. Several key groups are at increased risk of contracting pneumococcal pneumonia, and eligible patients are being missed in clinical practice...
October 15, 2016: European Journal of Internal Medicine
Brenda Anna Kwambana-Adams, Franklin Asiedu-Bekoe, Badu Sarkodie, Osei Kuffour Afreh, George Khumalo Kuma, Godfred Owusu-Okyere, Ebenezer Foster-Nyarko, Sally-Ann Ohene, Charles Okot, Archibald Kwame Worwui, Catherine Okoi, Madikay Senghore, Jacob Kweku Otu, Chinelo Ebruke, Richard Bannerman, Kwame Amponsa-Achiano, David Opare, Gemma Kay, Timothy Letsa, Owen Kaluwa, Ebenezer Appiah-Denkyira, Victor Bampoe, Syed M A Zaman, Mark J Pallen, Umberto D'Alessandro, Jason M Mwenda, Martin Antonio
BACKGROUND: An outbreak of pneumococcal meningitis among non-infant children and adults occurred in the Brong-Ahafo region of Ghana between December 2015 and April 2016 despite the recent nationwide implementation of a vaccination programme for infants with the 13-valent pneumococcal conjugate vaccine (PCV13). METHODS: Cerebrospinal fluid (CSF) specimens were collected from patients with suspected meningitis in the Brong-Ahafo region. CSF specimens were subjected to Gram staining, culture and rapid antigen testing...
October 18, 2016: BMC Infectious Diseases
Richard K Zimmerman, Anthony E Brown, Valory N Pavlik, Krissy K Moehling, Jonathan M Raviotta, Chyongchiou J Lin, Song Zhang, Mary Hawk, Shakala Kyle, Suchita Patel, Faruque Ahmed, Mary Patricia Nowalk
OBJECTIVES: To test the effectiveness of a step-by step, evidence-based guide, the 4 Pillars Practice Transformation Program, to increase adult pneumococcal vaccination. DESIGN: Randomized controlled cluster trial (RCCT) in Year 1 (June 1, 2013 to May 31, 2014) and pre-post study in Year 2 (June 1, 2014 to January 31, 2015) with data analyzed in 2016. Baseline year was June 1, 2012, to May 31, 2013. Demographic and vaccination data were derived from deidentified electronic medical record extractions...
October 18, 2016: Journal of the American Geriatrics Society
Toon Braeye, Jan Verhaegen, Annick Mignon, Wim Flipse, Denis Pierard, Kris Huygen, Carole Schirvel, Niel Hens
[This corrects the article DOI: 10.1371/journal.pone.0159832.].
2016: PloS One
Erin E Shaughnessy, Erika L Stalets, Samir S Shah
PURPOSE OF REVIEW: This review covers the outpatient management of pediatric community-acquired pneumonia (CAP), discussing the changing microbiology of CAP since the introduction of the 13-valent pneumococcal conjugate vaccine in 2010, and providing an overview of national guideline recommendations for diagnostic evaluation and treatment. RECENT FINDINGS: Rates of invasive pneumococcal disease and pneumococcal antibiotic resistance have plummeted since widespread 13-valent pneumococcal conjugate vaccine immunization...
October 15, 2016: Current Opinion in Pediatrics
Tatsuhiko Azegami, Yoshikazu Yuki, Kaori Hayashi, Mari Nakamura, Akihito Hishikawa, Hiroshi Kiyono, Hiroshi Itoh
OBJECTIVE: Previous studies have shown that injectable vaccines against renin-angiotensin system may be effective for the treatment of hypertension, but these injectable vaccines often cause local skin reactions and soreness at the injection site. The aim of this study was to develop a new non-injectable vaccine against angiotensin II type 1 receptor (AT1R) and examine its effect on blood pressure. DESIGN AND METHOD: The peptide, seven-amino-acid sequence from second extracellular loop of rat AT1R was synthesized and then conjugated with pneumococcal surface protein A (PspA) as a carrier protein for the nasal vaccination...
September 2016: Journal of Hypertension
Xiuting Mo, Ruoyan Gai Tobe, Xiaoyan Liu, Rintaro Mori
BACKGROUND: Each year in China, approximately 700,000 children under 5 years old are diagnosed with pneumonia, and 30,000 die of the disease. Although 7-valent pneumococcal conjugate vaccine (PCV-7) and 23-valent pneumococcal polysaccharide vaccine (PPV-23) are available in China, the costs are borne by the consumer, resulting in low coverage for PCV-7. We aimed to conduct a simulation study to assess the cost-effectiveness and health benefits of PCV-7, 13-valent pneumococcal conjugate vaccine (PCV-13) and PPV-23 to prevent childhood pneumonia and other vaccine-preventive diseases in China...
November 2016: Pediatric Infectious Disease Journal
Bikas K Arya, Sangeeta Das Bhattacharya, Catherine G Sutcliffe, Swapan Kumar Niyogi, Subhasish Bhattacharyya, Sunil Hemram, William J Moss, Samiran Panda, Ranjan Saurav Das, Sutapa Mandal, Dennis Robert, Pampa Ray
BACKGROUND: In addition to reducing Haemophilus influenzae type b (Hib) disease in vaccinated individuals, the Hib conjugate vaccine (HibCV) has indirect effects; it reduces Hib disease in unvaccinated individuals by decreasing carriage. Human immunodeficiency virus (HIV)-infected children are at increased risk for Hib disease and live in families where multiple members may have HIV. The aim of this study is to look at the impact of 2 doses of the HibCV on nasopharyngeal carriage of Hib in HIV-infected Indian children (2-15 years) and the indirect impact on carriage in their parents...
November 2016: Pediatric Infectious Disease Journal
Julia L Marcus, Roger Baxter, Wendy A Leyden, Dharushana Muthulingam, Arnold Yee, Michael A Horberg, Daniel B Klein, William J Towner, Chun R Chao, Charles P Quesenberry, Michael J Silverberg
It is unclear whether HIV-infected individuals remain at higher risk of invasive pneumococcal disease (IPD) compared with HIV-uninfected individuals. We conducted a cohort study of HIV-infected and demographically matched HIV-uninfected adults within Kaiser Permanente Northern California during the period 1996-2011. We used Poisson models to obtain rate ratios (RRs) for incident IPD associated with HIV infection and other risk factors. Among 13,079 HIV-infected and 137,643 HIV-uninfected adults, the IPD rate per 100,000 person-years was 160 (n = 109 events) for HIV-infected and 8 (n = 75 events) for HIV-uninfected subjects, with an adjusted RR of 13...
October 2016: AIDS Patient Care and STDs
Virtu Solano-Collado, Mário Hüttener, Manuel Espinosa, Antonio Juárez, Alicia Bravo
Global regulators play an essential role in the adaptation of bacterial cells to specific niches. Bacterial pathogens thriving in the tissues and organs of their eukaryotic hosts are a well-studied example. Some of the proteins that recognize local DNA structures rather than specific nucleotide sequences act as global modulators in many bacteria, both Gram-negative and -positive. To this class of regulators belong the H-NS-like proteins, mainly identified in γ-Proteobacteria, and the MgaSpn-like proteins identified in Firmicutes...
2016: Frontiers in Molecular Biosciences
Marie-Odile Husson, Delphine Ley, Céline Portal, Madeleine Gottrand, Thomas Hueso, Jean-Luc Desseyn, Frédéric Gottrand
OBJECTIVES: Although n-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFAs) are used widely in the treatment of chronic inflammatory diseases, their effect in infectious disease requires a particular attention. METHODS: The present article discusses their anti-inflammatory and immune properties involved in the host defence and presents a systematic review of the effects of their oral administration on the prevention and outcome of experimental and clinical infections...
October 14, 2016: Journal of Infection
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