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Pneumococcal meningitis

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https://www.readbyqxmd.com/read/28523054/acute-bacterial-meningitis-in-children-presenting-to-the-children-s-hospital-lahore-before-and-after-pneumococcal-vaccine-in-pakistan-national-immunization-program-a-comparison
#1
Attia Bari, Fatima Zeeshan, Aizza Zafar, Hasan Ejaz, Uzma Jabeen, Ahsan Waheed Rathore
OBJECTIVE: To describe bacteriological profile, morbidity and mortality of acute bacterial meningitis (ABM) in children and to compare these parameters before and after the introduction of Pneumococcal vaccine in Pakistan National Immunization Program. METHODS: The present descriptive study was conducted at the Department of Paediatric Medicine of The Children's Hospital Lahore from January 2012 to December 2015. A total of 503 children one month to five years of age admitted with diagnosis of meningitis were included...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28516066/the-alpha-tocopherol-form-of-vitamin-e-boosts-elastase-activity-of-human-pmns-and-their-ability-to-kill-streptococcus-pneumoniae
#2
Elsa N Bou Ghanem, James N Lee, Basma H Joma, Simin N Meydani, John M Leong, Alexander Panda
Despite the availability of vaccines, Streptococcus pneumoniae remains a leading cause of life-threatening infections, such as pneumonia, bacteremia and meningitis. Polymorphonuclear leukocytes (PMNs) are a key determinant of disease course, because optimal host defense requires an initial robust pulmonary PMN response to control bacterial numbers followed by modulation of this response later in infection. The elderly, who manifest a general decline in immune function and higher basal levels of inflammation, are at increased risk of developing pneumococcal pneumonia...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28515075/pigr-and-pecam-1-bind-to-pneumococcal-adhesins-rrga-and-pspc-mediating-bacterial-brain-invasion
#3
Federico Iovino, Joo-Yeon Engelen-Lee, Matthijs Brouwer, Diederik van de Beek, Arie van der Ende, Merche Valls Seron, Peter Mellroth, Sandra Muschiol, Jan Bergstrand, Jerker Widengren, Birgitta Henriques-Normark
Streptococcus pneumoniae is the main cause of bacterial meningitis, a life-threating disease with a high case fatality rate despite treatment with antibiotics. Pneumococci cause meningitis by invading the blood and penetrating the blood-brain barrier (BBB). Using stimulated emission depletion (STED) super-resolution microscopy of brain biopsies from patients who died of pneumococcal meningitis, we observe that pneumococci colocalize with the two BBB endothelial receptors: polymeric immunoglobulin receptor (pIgR) and platelet endothelial cell adhesion molecule (PECAM-1)...
May 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28508419/case-control-study-shows-that-neonatal-pneumococcal-meningitis-cannot-be-distinguished-from-group-b-streptococcus-cases
#4
Alexandra Arfi, Robert Cohen, Emmanuelle Varon, Stéphane Béchet, Stéphane Bonacorsi, Corinne Levy
AIM: Streptococcus pneumoniae (S. pneumoniae) is sometimes implicated in neonatal bacterial meningitis. This study described the demographic, clinical and biological features of neonatal S. pneumoniae meningitis and compared pneumococcal and group B streptococcal (GBS) neonatal meningitis. METHODS: We conducted a case-control study that compared neonates, aged one to 28 days with S. pneumoniae meningitis or GBS meningitis. Each case with S. pneumoniae was randomly matched to four control patients with GBS by age group and study year...
May 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28489958/zinc-metalloproteinase-zmpc-suppresses-experimental-pneumococcal-meningitis-by-inhibiting-bacterial-invasion-of-central-nervous-systems
#5
Masaya Yamaguchi, Masanobu Nakata, Ryuichi Sumioka, Yujiro Hirose, Satoshi Wada, Yukihiro Akeda, Tomoko Sumitomo, Shigetada Kawabata
Streptococcus pneumoniae is a leading cause of bacterial meningitis. Here, we investigated whether pneumococcal paralogous zinc metalloproteases contribute to meningitis onset. Findings of codon-based phylogenetic analyses indicated three major clusters in the Zmp family; ZmpA, ZmpC, and ZmpB, with ZmpD as a subgroup. In vitro invasion assays of human brain microvascular endothelial cells (hBMECs) showed that deletion of the zmpC gene in S. pneumoniae strain TIGR4 significantly increased bacterial invasion into hBMECs, whereas deletion of either zmpA or zmpB had no effect...
May 10, 2017: Virulence
https://www.readbyqxmd.com/read/28487240/analysis-of-tlr2-tlr4-and-tlr9-single-nucleotide-polymorphisms-in-children-with-bacterial-meningitis-and-their-healthy-family-members
#6
Ewelina Gowin, Bogna Świątek-Kościelna, Ewelina Kałużna, Jerzy Nowak, Michał Michalak, Jacek Wysocki, Danuta Januszkiewicz-Lewandowska
BACKGROUND: The aim was to analyse TLR2 rs5743708, TLR2 rs4696480, TLR4 rs4986790, TLR9 rs5743836, and TLR9 rs352140 single nucleotide polymorphisms (SNPs) in children with pneumococcal and meningococcal meningitis and their family members. METHODS: The study group consisted of 39 children with bacterial meningitis (25 with meningococcal meningitis and 14 with pneumococcal meningitis) and 49 family members. Laboratory test results and the course of the diseases were analyzed...
May 6, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28469431/opportunities-and-challenges-of-adolescent-and-adult-vaccination-administration-within-pharmacies-in-the-united-states
#7
REVIEW
Jessica Y Islam, Joann F Gruber, Alexandre Lockhart, Manju Kunwar, Spencer Wilson, Sara B Smith, Noel T Brewer, Jennifer S Smith
Pharmacies have been endorsed as alternative vaccine delivery sites to improve vaccination rates through increased access to services. Our objective was to identify challenges and facilitators to adolescent and adult vaccination provision in pharmacy settings in the United States. We recruited 40 licensed pharmacists in states with different pharmacy vaccination laws. Eligible pharmacists previously administered or were currently administering human papillomavirus (HPV); tetanus, diphtheria, and pertussis (TDAP); or meningitis (meningococcal conjugate vaccine [MCV4]) vaccines to adolescents aged 9 to 17 years...
2017: Biomedical Informatics Insights
https://www.readbyqxmd.com/read/28460251/streptococcus-pneumoniae-induced-ototoxicity-in-organ-of-corti-explant-cultures
#8
Michael Perny, Magdalena Solyga, Denis Grandgirard, Marta Roccio, Stephen L Leib, Pascal Senn
Hearing loss remains the most common long-term complication of pneumococcal meningitis (PM) reported in up to 30% of survivors. Streptococcus pneumoniae have been shown to possess different ototoxic properties. Here we present a novel ex vivo experimental setup to examine in detail the pattern of hair cell loss upon exposure to different S. pneumoniae strains, therefore recapitulating pathogen derived aspects of PM-induced hearing loss. Our results show a higher susceptibility towards S. pneumoniae-induced cochlear damage for outer hair cells (OHC) compared to inner hair cells (IHC), which is consistent with in vivo data...
April 25, 2017: Hearing Research
https://www.readbyqxmd.com/read/28456490/pediatric-bacterial-meningitis-in-japan-2013-2015-3-5-years-after-the-wide-use-of-haemophilus-influenzae-type-b-and-streptococcus-pneumoniae-conjugated-vaccines
#9
Masayoshi Shinjoh, Yoshio Yamaguchi, Satoshi Iwata
BACKGROUND: Haemophilus influenzae type b (Hib) vaccine and pneumococcal conjugated vaccine (PCV) have been widely used since 2010 in Japan when both vaccines were supported by the regional governments, and they were covered as routine recommended vaccines in 2013. The incidence of bacterial meningitis due to these organisms decreased in 2011 and 2012, but meningitis due to Streptococcus agalactiae and Escherichia coli remained unchanged. OBJECTIVES: We planned to confirm whether the incidence also decreased in subsequent years...
April 26, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28451868/juglone-alleviates-pneumolysin-induced-human-alveolar-epithelial-cell-injury-via-inhibiting-the-hemolytic-activity-of-pneumolysin
#10
Meng Song, Gejin Lu, Meng Li, Xuming Deng, Jianfeng Wang
Streptococcus pneumoniae (the pneumococcus) is an opportunistic pathogen responsible for several human diseases, including acute otitis media, pneumonia, sepsis and bacterial meningitis, and possesses numerous virulence factors associated with pneumococcal infection and pathogenesis. With the capacity to form pores in cholesterol-rich membranes, pneumolysin (PLY) is a key virulence factor of S. pneumoniae and causes severe tissue damage during pneumococcal infection. Juglone (JG), a natural 1,4-naphthoquinone widely found in the roots, leaves, woods and fruits of Juglandaceae walnut trees, inhibits PLY-induced hemolysis via inhibition of the oligomerization of PLY and exhibits minimal anti-S...
April 27, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28450902/role-of-neural-barriers-in-the-pathogenesis-and-outcome-of-streptococcus-pneumoniae-meningitis
#11
Ofer Prager, Alon Friedman, Yaffa Mizrachi Nebenzahl
Bacterial meningitis is an inflammatory disease of the meninges of the central nervous system (CNS). Streptococcus pneumoniae (S. pneumoniae), Neisseria meningitidis, and Haemophilus influenzae are the major bacterial pathogens causing meningitis with S. pneumoniae being responsible for two thirds of meningitis cases in the developed world. To reach the CNS following nasopharyngeal colonization and bacteraemia, the bacteria traverse from the circulation across the blood brain barrier (BBB) and choroid plexus...
March 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28449971/indirect-herd-protection-following-pneumococcal-conjugated-vaccines-introduction-a-systematic-review-of-the-literature
#12
REVIEW
Gal Tsaban, Shalom Ben-Shimol
BACKGROUND: Pneumococcal diseases are major causes of morbidity among adults, especially those over 50years of age. While pneumococcal conjugated vaccines (PCV's) impact on pneumococcal disease rates among children is well established, the extent of its impact on adult pneumococcal related illness remains unclear. The aim of this systematic literature review was to describe the impact of PCV introduction to childhood national immunization programs worldwide on PCV-naive adult population...
May 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28438705/tigr4-strain-causes-more-severe-disease-than-wu2-strain-in-a-mouse-model-of-streptococcus-pneumoniae-meningitis-a-common-pathogenic-role-for-interferon-%C3%AE
#13
Belinda Yau, Lay Khoon Too, Helen J Ball, Nicholas H Hunt
Streptococcus pneumoniae (S. pneumoniae) meningitis causes debilitating neurological symptoms and acute fatalities in patients, and long-term neurological sequelae in some survivors. Current vaccines do not protect against all 94 known S. pneumoniae capsular serotypes, many of which are capable of causing pneumococcal meningitis (PM). We here compare the pathogenic outcomes of two clinically virulent isolates of S. pneumoniae, serotype 3 strain WU2 and serotype 4 strain TIGR4, in a murine model of PM. At an identical infectious dosage of 10(3) CFU administered via the intracerebroventricular route, significantly greater mortality, interleukin (IL)1β and IL6 production, and blood-brain barrier dysfunction occurred in TIGR4-induced PM compared to PM caused by WU2...
April 22, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28433849/clinical-significance-of-long-term-follow-up-of-children-with-posttraumatic-skull-base-fracture
#14
Sharon Leibu, Guy Rosenthal, Yigal Shoshan, Mony Benifla
BACKGROUND: To assess in children with skull base fractures, incidences of cerebrospinal fluid (CSF) leak, meningitis, and the need for prophylactic antibiotics, anti-pneumococcal vaccination, and surgical interventions. METHODS: We reviewed the records of children with skull base fractures who were admitted to our tertiary care center during 2009-2014. RESULTS: 196 children (153 male) were hospitalized with skull base fractures, aged 1 month to 18 years (mean 6 ± 4 years)...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28424565/invasive-pneumococcal-disease-still-lots-to-learn-and-a-need-for-standardized-data-collection-instruments
#15
T J Marrie, G J Tyrrell, Sumit R Majumdar, Dean T Eurich
Background. Large studies of invasive pneumococcal disease (IPD) are frequently lacking detailed clinical information. Methods. A population-based 15-year study of IPD in Northern Alberta. Results. 2435 patients with a mean age of 54.2 years formed the study group. Males outnumbered females and Aboriginal and homeless persons were overrepresented. High rates of smoking, excessive alcohol use, and illicit drug use were seen. Almost all (87%) had a major comorbidity and 15% had functional limitations prior to admission...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28419350/epidemiology-of-meningitis-and-encephalitis-in-the-united-states-from-2011-2014
#16
Rodrigo Hasbun, Ning Rosenthal, J M Balada-Llasat, Jessica Chung, Steve Duff, Samuel Bozzette, Louise Zimmer, Christine C Ginocchio
Background: Large epidemiological studies evaluating the etiologies, management decisions and outcomes of adults with meningitis and encephalitis in the United States (US) are lacking. Methods: Adult patients (≥18 years) with meningitis or encephalitis by ICD-9 codes available in the Premier Healthcare Database during 2011-2014 were analyzed. Results: A total of 26,429 patients with meningitis or encephalitis were identified. The median age was 43 years; 53% were female...
April 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28419005/clinical-utility-of-polymerase-chain-reaction-testing-for-streptococcus-pneumoniae-in-pediatric-cerebrospinal-fluid-samples-a-diagnostic-accuracy-study-of-more-than-2000-samples-from-2004-2015
#17
Abdullah Alqayoudhi, Maryke Nielsen, Nicola O'Sullivan, Mary Corcoran, Patrick J Gavin, Karina M Butler, Robert Cunney, Richard J Drew
The aim of this retrospective study was to review the diagnostic accuracy of real-time polymerase chain reaction (PCR) testing of cerebrospinal fluid (CSF) samples for Streptococcus pneumoniae DNA in comparison with traditional bacterial culture. The hypothesis was that PCR is more sensitive than culture and would detect more cases of pneumococcal meningitis, particularly in children treated with antimicrobials before CSF sampling occurred. Patients younger than 16 years who had a CSF sample tested for S.pneumoniae DNA by PCR between 2004 and 2015 were included...
April 17, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28403047/risk-factors-in-children-older-than-5-years-with-pneumococcal-meningitis-data-from-a-national-network
#18
Fanny Hénaff, Corinne Levy, Robert Cohen, Capucine Picard, Emmanuelle Varon, Christèle Gras Le Guen, Elise Launay
BACKGROUND: The occurrence of meningitis in children >5 years old may be associated with specific predisposing factors that can be anatomic, such as cerebrospinal fluid fistula or breach, or related to genetic susceptibility or N inborn or acquired immunologic defect. This study aimed to assess the anatomical and immunologic risk factors in children >5 years old with pneumococcal meningitis and prospectively enrolled in the French national meningitis network. METHODS: We analyzed all data for children who were 5-15 years old with a diagnosis of pneumococcal meningitis between 2001 and 2013...
May 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28385159/erratum-to-mannose-binding-lectin-associated-serine-protease-2-masp-2-contributes-to-poor-disease-outcome-in-humans-and-mice-with-pneumococcal-meningitis
#19
E Soemirien Kasanmoentalib, Mercedes Valls Seron, Bart Ferwerda, Michael W Tanck, Aeilko H Zwinderman, Frank Baas, Arie van der Ende, William J Schwaeble, Matthijs C Brouwer, Diederik van de Beek
No abstract text is available yet for this article.
April 6, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28349737/pediatric-acute-otitis-media-in-the-era-of-pneumococcal-vaccination
#20
Kareem O Tawfik, Stacey L Ishman, Mekibib Altaye, Jareen Meinzen-Derr, Daniel I Choo
Objectives (1) Describe longitudinal trends in annual prevalence of hospital admission for pediatric acute otitis media (AOM) and complications of AOM (CAOM) since introduction of pneumococcal vaccination in 2000 and (2) describe the longitudinal trend of prevalence of hospital admission for pneumococcal meningitis in children with AOM-related diagnoses in the postvaccination era. Study Design Retrospective analysis of Kids' Inpatient Database from 2000 to 2012. Setting Community, nonrehabilitation hospitals...
March 1, 2017: Otolaryngology—Head and Neck Surgery
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