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Pneumococcal meningitis

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https://www.readbyqxmd.com/read/29149266/association-between-prior-antibiotic-therapy-and-subsequent-risk-of-community-acquired-infections-a-systematic-review
#1
Umer Malik, David Armstrong, Mark Ashworth, Alex Dregan, Veline L'Esperance, Lucy McDonnell, Mariam Molokhia, Patrick White
Background: Antibiotic use can have negative unintended consequences including disruption of the human microbiota, which is thought to protect against pathogen overgrowth. We conducted a systematic review to assess whether there is an association between exposure to antibiotics and subsequent risk of community-acquired infections. Methods: We searched MEDLINE, EMBASE and Web of Science for studies published before 30 June 2017, examining the association between antibiotic use and subsequent community-acquired infection...
November 14, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29119707/impaired-expression-of-cxcl5-and-matrix-metalloproteinases-in-the-lungs-of-mice-with-high-susceptibility-to-streptococcus-pneumoniae-infection
#2
Rubia I Mancuso, Eliane N Miyaji, Cristiane C F Silva, Fernanda V Portaro, Alessandra Soares-Schanoski, Orlando G Ribeiro, Maria Leonor S Oliveira
INTRODUCTION: Streptococcus pneumoniae colonizes the nasopharynx of healthy individuals establishing a commensal relationship with the host. In some conditions, bacteria invade the lower respiratory tract and innate immune responses are crucial to avoid diseases such as pneumonia, sepsis, or meningitis. METHODS: Here, we compared the susceptibility to pneumococcal respiratory infection of two outbred mouse lines, AIRmin and AIRmax, selected for low or high acute inflammatory responses, respectively...
November 9, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29104430/pitfalls-in-the-diagnosis-and-management-of-invasive-pneumococcal-meningoencephalitis-what-we-can-learn-from-a-case
#3
Pascale S Grzonka, Raoul Sutter
Invasive pneumococcal meningitis is a life-threatening infectious disease affecting the central nervous system. It continues to be the most common type of community-acquired acute bacterial meningitides. Despite advances in neuro-critical care, the case fatality rate remains high. Rapid diagnosis and initiation of antibiotic therapy precludes mortality and long-term neurological sequelae in survivors. However, not all cases are easily recognised, and unanticipated complications may impede optimal course and outcome...
2017: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/29096648/inhibition-of-damp-signaling-as-an-effective-adjunctive-treatment-strategy-in-pneumococcal-meningitis
#4
Ilias Masouris, Matthias Klein, Susanne Dyckhoff, Barbara Angele, H W Pfister, Uwe Koedel
BACKGROUND: Pneumococcal meningitis remains a potentially lethal and debilitating disease, mainly due to brain damage from sustained inflammation. The release of danger-associated molecular patterns (DAMPs), like myeloid-related protein 14 (MRP14) and high mobility group box 1 protein (HMGB1), plays a major role in persistence of inflammation. In this study, we evaluated if paquinimod, an MRP14-inhibitor, and an anti-HMGB1 antibody can improve clinical outcome as adjunctive therapeutics in pneumococcal meningitis...
November 2, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29095719/novel-and-preclinical-treatment-strategies-in-pneumococcal-meningitis
#5
Jan P Bewersdorf, Denis Grandgirard, Uwe Koedel, Stephen L Leib
PURPOSE OF REVIEW: Pneumococcal meningitis is the most frequent form of bacterial meningitis in Europe and the United States. Although early antimicrobial and adjuvant therapy with dexamethasone have helped to improve disease outcome in adults, mortality and morbidity rates remain unsatisfactorily high, emphasizing the need for additional treatment options. Promising targets for adjuvant therapy have been identified recently and will be the focus of this review. RECENT FINDINGS: Brain disease in pneumococcal meningitis is caused by direct bacterial toxicity and excessive meningeal inflammation...
November 1, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29081366/central-nervous-system-infections-in-the-absence-of-cerebrospinal-fluid-pleocytosis
#6
Hakan Erdem, Derya Ozturk-Engin, Yasemin Cag, Seniha Senbayrak, Asuman Inan, Esra Kazak, Umit Savasci, Nazif Elaldi, Haluk Vahaboglu, Rodrigo Hasbun
Previous multicenter/multinational studies were evaluated to determine the frequency of the absence of cerebrospinal fluid pleocytosis in patients with central nervous system infections, as well as the clinical impact of this condition. It was found that 18% of neurosyphilis, 7.9% of herpetic meningoencephalitis, 3% of tuberculous meningitis, 1.7% of Brucella meningitis, and 0.2% of pneumococcal meningitis cases did not display cerebrospinal fluid pleocytosis. Most patients were not immunosuppressed. Patients without pleocytosis had a high rate of unfavorable outcomes and thus this condition should not be underestimated...
November 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29068749/combined-effect-of-pcv10-and-meningococcal-c-conjugate-vaccination-on-meningitis-mortality-among-children-under-five-years-of-age-in-brazil
#7
Ana Luiza Bierrenbach, Ruth Minamisava, Airlane Pereira Alencar, Gizelton Pereira Alencar, Ana Lucia Andrade
The 10-valent pneumococcal conjugate vaccine (PCV10) was introduced in the Brazilian National Immunization Program in March 2010, scheduled at 2, 4, and 6 months, with a booster at 12-15 months of age. The meningococcal C conjugate vaccine (MCC) was introduced in November 2010, scheduled at 3 and 5 months, with a booster dose at 12-15 months of age and no catch-up for older age groups. In this interrupted time-series analysis study, we used Brazilian mortality data from 2005 to 2015 for children under five years of age (excluding data from the state of Bahia) to assess the combined impact of these vaccines on the overall burden of meningitis mortality among children aged 0-23 months and 2-4 years, as defined using meningitis and meningococcemia specific International Classification of Diseases - tenth revision codes...
October 25, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29064356/expansion-of-vaccination-services-and-strengthening-vaccine-preventable-diseases-surveillance-in-haiti-2010-2016
#8
Rania A Tohme, Jeannot Francois, Kathleen F Cavallaro, Gilson Paluku, Idrissa Yalcouye, Ernsley Jackson, Tracie Wright, Paul Adrien, Mark A Katz, Terri B Hyde, Pape Faye, Francine Kimanuka, Vance Dietz, John Vertefeuille, David Lowrance, Benjamin Dahl, Roopal Patel
Following the 2010 earthquake, Haiti was at heightened risk for vaccine-preventable diseases (VPDs) outbreaks due to the exacerbation of long-standing gaps in the vaccination program and subsequent risk of VPD importation from other countries. Therefore, partners supported the Haitian Ministry of Health and Population to improve vaccination services and VPD surveillance. During 2010-2016, three polio, measles, and rubella vaccination campaigns were implemented, achieving a coverage > 90% among children and maintaining Haiti free of those VPDs...
October 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29062896/copper-chaperone-cupa-and-zinc-control-copy-regulation-of-the-pneumococcal-cop-operon
#9
Miranda J Neubert, Elizabeth A Dahlmann, Andrew Ambrose, Michael D L Johnson
Any metal in excess can be toxic; therefore, metal homeostasis is critical to bacterial survival. Bacteria have developed specialized metal import and export systems for this purpose. For broadly toxic metals such as copper, bacteria have evolved only export systems. The copper export system (cop operon) usually consists of the operon repressor, the copper chaperone, and the copper exporter. In Streptococcus pneumoniae, the causative agent of pneumonia, otitis media, sepsis, and meningitis, little is known about operon regulation...
September 2017: MSphere
https://www.readbyqxmd.com/read/29029129/a-visual-review-of-the-human-pathogen-streptococcus-pneumoniae
#10
Ditte Høyer Engholm, Mogens Kilian, David S Goodsell, Ebbe Sloth Andersen, Rikke Schmidt Kjærgaard
Being the principal causative agent of bacterial pneumonia, otitis media, meningitis and septicemia, the bacterium Streptococcus pneumoniae is a major global health problem. To highlight the molecular basis of this problem, we have portrayed essential biological processes of the pneumococcal life cycle in eight watercolor paintings. The paintings are done to a consistent nanometer scale based on currently available data from structural biology and proteomics. In this review article, the paintings are used to provide a visual review of protein synthesis, carbohydrate metabolism, cell wall synthesis, cell division, teichoic acid synthesis, virulence, transformation and pilus synthesis based on the available scientific literature within the field of pneumococcal biology...
November 1, 2017: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/28992391/four-years-of-case-based-surveillance-of-meningitis-following-the-introduction-of-menafrivac-in-moissala-chad-lessons-learned
#11
Anne-Laure Page, Matthew E Coldiron, Kadidja Gamougam, Mahmaat Ali Acyl, Mbaihol Tamadji, Céline Lastrucci, Northan Hurtado, François-Charles Tehoua, Florence Fermon, Dominique A Caugant, Klaudia Porten
OBJECTIVE: Case-based surveillance of bacterial meningitis in sentinel districts has been recommended after the introduction of the conjugated vaccine against Neisseria meningitidis serogroup A (NmA), MenAfriVac, in the African meningitis belt. Here we report data and lessons learnt from four years of surveillance in the district of Moissala, Chad. METHODS: All suspected cases of meningitis were referred free of charge to the district hospital for lumbar puncture and treatment...
October 9, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28972486/levels-of-neurospecific-markers-in-cerebrospinal-fluid-of-adult-patients-with-bacterial-meningitis
#12
A Sokhan, Y Zots, A Gavrylov, K Iurko, A Solomennik, A Kuznietsova
At present, the great attention is given to the neurospecific markers as their elevated level in the cerebrospinal fluid corresponds to the degree of destruction of relevant CNS cells. Therefore, actual direction of the studies of the pathogenesis and diagnosis of CNS diseases is to determine levels of neurospecific markers in the cerebrospinal fluid (CSF). The purpose of the study was to evaluate the diagnostic and prognostic role of NSE, S-100 protein, GFAP and MBP levels in CSF of patients with acute bacterial meningitis...
September 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28968148/successful-african-introduction-of-a-new-group-a-meningococcal-conjugate-vaccine-future-challenges-and-next-steps
#13
F Marc LaForce, Mamoudou Djingarey, Simonetta Viviani, Marie-Pierre Preziosi
The introduction of a new Group A meningococcal conjugate vaccine, MenAfriVac(R), has been a important public health success. Group A meningococcal meningitis has disappeared in all countries where the new Men A conjugate vaccine has been used at public health scale. However, continued control of Group A disease in sub-Saharan Africa will require that community immunity against Group A meningococci be maintained. Modeling studies have shown that unless herd immunity is maintained Group A meningococcal disease will return...
October 2, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28968016/-molecular-characterization-of-non-vaccine-streptococcus-pneumoniae-serotypes-11a-15-b-c-and-23a-recovered-from-invasive-isolates-in-colombia
#14
Paola Andrea Palacios, Carolina Duarte, Olga Sanabria, Jaime Moreno
INTRODUCTION: A total of 192 invasive Streptococcus pneumoniae isolates, from serotypes 11A, 15B/C and 23A (not included in the conjugated vaccines), were collected in Colombia between 1994 and 2014 as part of the activities of the Network surveillance system for the causative agents of pneumonia and meningitis (SIREVA II). OBJECTIVE: To determine the molecular characteristics of invasive S. pneumoniae isolates from serotypes 11A, 15B/C and 23A in Colombia from 1994 to 2014...
September 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28956537/epidemiology-and-treatment-of-the-commonest-form-of-listeriosis-meningitis-and-bacteraemia
#15
Pasquale Pagliano, Ferhat Arslan, Tiziana Ascione
Listeria monocytogenes is a Gram-positive bacillus and facultative intracellular bacterium whose transmission occurs mainly through the consumption of contaminated food. Listeriosis has an incidence estimated at around three-six cases per million per year and the most common forms of the infection are neurolisteriosis, bacteraemia, and maternal-neonatal infection. Those affected by listeriosis are at the extremes age of the life or report specific risk factors, such as malignancies, causing a defect of cellular immunity...
September 1, 2017: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28951086/trends-in-pneumococcal-meningitis-hospitalizations-following-the-introduction-of-the-13-valent-pneumococcal-conjugate-vaccine-in-the-united-states
#16
David M Jacobs, Francine Yung, Emily Hart, Melanie N H Nguyen, Amy Shaver
BACKGROUND: The 13-valent pneumococcal conjugate vaccine (PCV13) was introduced in 2010 in the U.S. and its impact on pneumococcal meningitis (PM) is unknown. We assessed the impact of PCV13 on PM hospitalization rates 4years after the vaccine was introduced. METHODS: This was a retrospective analysis of the National Inpatient Sample from 2008-2014. Patients with an ICD-9-CM code for PM (320.1) were identified and rates calculated using US Census data as the denominator...
October 27, 2017: Vaccine
https://www.readbyqxmd.com/read/28941358/rates-of-vaccination-against-streptococcus-pneumoniae-in-cochlear-implant-patients
#17
Anna Piotrowska, Iwona Paradowska-Stankiewicz, Henryk Skarżyński
BACKGROUND Streptococcus pneumoniae can cause life-threatening illness, with invasive pneumococcal diseases (IPD) like meningitis, sepsis, bacteremic pneumonia, and bacteremia being major causes of morbidity and mortality. Studies have shown that patients who have had a cochlear implant, particularly children, have an increased risk of bacterial (pneumococcal) meningitis. Vaccination in patients with cochlear implants is important and recommended universally. The World Health Organization recommends the use of pneumococcal conjugate vaccines in all countries and considers their use to be a priority in all national immunization programs...
September 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28931649/sequencing-of-the-variable-region-of-rpsb-to-discriminate-between-streptococcus-pneumoniae-and-other-streptococcal-species
#18
Anne L Wyllie, Yvonne Pannekoek, Sandra Bovenkerk, Jody van Engelsdorp Gastelaars, Bart Ferwerda, Diederik van de Beek, Elisabeth A M Sanders, Krzysztof Trzciński, Arie van der Ende
The vast majority of streptococci colonizing the human upper respiratory tract are commensals, only sporadically implicated in disease. Of these, the most pathogenic is Mitis group member, Streptococcus pneumoniae Phenotypic and genetic similarities between streptococci can cause difficulties in species identification. Using ribosomal S2-gene sequences extracted from whole-genome sequences published from 501 streptococci, we developed a method to identify streptococcal species. We validated this method on non-pneumococcal isolates cultured from cases of severe streptococcal disease (n = 101) and from carriage (n = 103), and on non-typeable pneumococci from asymptomatic individuals (n = 17) and on whole-genome sequences of 1157 pneumococcal isolates from meningitis in the Netherlands...
September 2017: Open Biology
https://www.readbyqxmd.com/read/28922054/economic-burden-of-pneumococcal-infections-in-children-under-5%C3%A2-years-of-age
#19
Mehmet Ceyhan, Yasemin Ozsurekci, Kubra Aykac, Basak Hacibedel, Egemen Ozbilgili
The present study aimed to determine the cost of childhood pneumococcal infections under 5 years of age and to provide further data for future health economy studies. Electronic medical records of children diagnosed with meningitis caused by S. pneumoniae and all-cause pneumonia, and acute otitis media (AOM) between January 2013-April 2014 were retrospectively evaluated. Direct costs for the treatments of hospitalized patients (pneumonia and pneumococcal meningitis) including costs of healthcare services consisted of costs of hospital bed, examination, laboratory analyses, scanning methods, consultation, vascular access procedures, and infusion and intravenous treatments...
September 18, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28915816/cramp-deficiency-leads-to-a-pro-inflammatory-phenotype-and-impaired-phagocytosis-after-exposure-to-bacterial-meningitis-pathogens
#20
Eugenia Kress, Julika Merres, Lea-Jessica Albrecht, Sven Hammerschmidt, Thomas Pufe, Simone C Tauber, Lars-Ove Brandenburg
BACKGROUND: Antimicrobial peptides are important components of the host defence with a broad range of functions including direct antimicrobial activity and modulation of inflammation. Lack of cathelin-related antimicrobial peptide (CRAMP) was associated with higher mortality and bacterial burden and impaired neutrophil granulocyte infiltration in a model of pneumococcal meningitis. The present study was designed to characterize the effects of CRAMP deficiency on glial response and phagocytosis after exposure to bacterial stimuli...
September 16, 2017: Cell Communication and Signaling: CCS
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