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neisseria meningitidis

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https://www.readbyqxmd.com/read/29337653/safety-and-immunogenicity-of-a-meningococcal-b-recombinant-vaccine-when-administered-with-routine-vaccines-to-healthy-infants-in-taiwan-a-phase-3-open-label-randomized-study
#1
Nan-Chang Chiu, Li-Min Huang, Arnold Willemsen, Chiranjiwi Bhusal, Ashwani Kumar Arora, Zenaida Reynoso Mojares, Daniela Toneatto
Neisseria meningitidis is associated with high mortality and morbidity in infants and children worldwide. This phase 3 study (NCT02173704) evaluated safety and immunogenicity of a 4-component serogroup B recombinant meningococcal vaccine (4CMenB) co-administered with routine vaccines in Taiwanese infants. In total, 225 healthy infants were randomized (2:1) to receive 4CMenB and routine vaccines (4CMenB+Routine) or routine vaccines only (Routine group) at 2, 4, 6 and 12 months of age. Routine vaccines were diphtheria-tetanus-acellular pertussis-inactivated poliovirus-Haemophilus influenzae type b, 13-valent pneumococcal, hepatitis B, measles-mumps-rubella and varicella vaccines...
January 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29330894/structure-function-and-evolution-of-the-hemerythrin-like-domain-superfamily
#2
Claudia Alvarez-Carreño, Vikram Alva, Arturo Becerra, Antonio Lazcano
Hemerythrin-like proteins have generally been studied for their ability to reversibly bind oxygen through their binuclear non-heme iron centers. However, in recent years, it has become increasingly evident that some members of the hemerythrin-like superfamily also participate in many other biological processes. For instance, the binuclear non-heme iron site of YtfE, a hemerythrin-like protein involved in the repair of iron centers in Escherichia coli, catalyzes the reduction of nitric oxide to nitrous oxide, and the human F-box/LRR-repeat protein 5, which contains a hemerythrin-like domain, is involved in intracellular iron homeostasis...
January 13, 2018: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29329168/immune-responses-to-booster-vaccination-with-meningococcal-abcwy-vaccine-following-primary-vaccination-with-either-investigational-or-licensed-vaccines-a-phase-2-randomized-study
#3
Leszek Szenborn, Stan L Block, Teresa Jackowska, Ryszard Konior, Diego DʼAgostino, Igor Smolenov, Daniela Toneatto, Jo Anne Welsch
BACKGROUND: Current meningococcal prime-boost vaccination schedules include separate vaccines for serogroups ACWY and B. An investigational combined serogroups ABCWY vaccine (MenABCWY) was developed to protect against clinically important Neisseria meningitidis serogroups. METHODS: In this phase 2, randomized, observer-blind, extension study (NCT01272180), participants aged 10-25 years received 1 booster dose of MenABCWY vaccine at 24 months (M) post-primary series of either MenABCWY (2 doses), 4CMenB (2 doses) or MenACWY-CRM vaccine (1 dose)...
January 11, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29321195/whole-genome-sequencing-of-the-emerging-invasive-neisseria-meningitidis-serogroup-w-in-sweden
#4
Lorraine Eriksson, Sara Thulin Hedberg, Susanne Jacobsson, Hans Fredlund, Paula Mölling, Bianca Stenmark
Invasive disease caused by Neisseria meningitidis serogroup W (MenW) has historically had a low incidence in Sweden with an average incidence of 0.03/100,000 population from 1995 to 2014. In recent years, a significant increase in incidence of MenW has been noted in Sweden to an average incidence of 0.15/100,000 population in 2015-2016. In June 2017 33% (7/21) of IMD cases were caused by MenW. In the present study, all invasive MenW isolates from Sweden collected from 1995 to June 2017 (n=86), were whole genome sequenced to determine the population structure and to compare isolates from Sweden to historical and international cases...
January 10, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29313733/whole-blood-incubation-with-the-neisseria-meningitidis-lpxl1-mutant-induces-less-pro-inflammatory-cytokines-than-the-wild-type-and-il-10-reduces-the-myd88-dependent-cytokines
#5
Hans Christian D Aass, Marit Hellum, Anne-Marie Siebke Trøseid, Petter Brandtzaeg, Jens Petter Berg, Reidun Øvstebø, Carola Elisabeth Henriksson
Levels of bacterial LPS, pro-inflammatory cytokines and IL-10 are related to the severity of meningococcal septicaemia. Patients infected with a Neisseria meninigitidis lpxL1 mutant ( Nm-mutant) with penta-acylated lipid A present with a milder meningococcal disease than those infected with hexa-acylated Nm wild type ( Nm-wt). The aim was to compare the pro-inflammatory responses after ex vivo incubation with the heat-inactivated Nm-wt or the Nm-mutant in citrated whole blood, and the modulating effects of IL-10...
January 1, 2018: Innate Immunity
https://www.readbyqxmd.com/read/29306437/covalent-probes-for-carbohydrate-active-enzymes-from-glycosidases-to-glycosyltransferases
#6
Yong Xu, Najib Uddin, Gerd K Wagner
Covalent probes for glycosidases and glycosyltransferases are of great interest as tool compounds for chemical biology. For glycosidases, a sizable number of such probes have been developed from covalent glycosidase inhibitors. We review selected recent examples and highlight different design strategies, including probes based on photoaffinity labels and mechanism-based inhibitors, as well as their applications in biology and for activity-based protein profiling. In contrast to glycosidases, only a limited number of covalent probes have been reported to date for glycosyltransferases...
2018: Methods in Enzymology
https://www.readbyqxmd.com/read/29287682/development-of-an-fhbp-ctb-holotoxin-like-chimera-and-the-elicitation-of-bactericidal-antibodies-against-serogroup-b-neisseria-meningitidis
#7
Gregory A Price, Margaret C Bash
The Neisseria meningitidis factor H binding protein (FHbp) is an important virulence factor and vaccine antigen contained in both USA licensed serogroup B meningococcal vaccines. Recent studies in human factor H (hFH) transgenic mice suggest that hFH-FHbp interactions lower FHbp-elicited immunogenicity. To provide tools with which to characterize and potentially improve FHbp immunogenicity, we developed an FHbp-cholera holotoxin-like chimera vaccine expression system in Escherichia coli that utilizes cholera toxin B (CTB) as both a scaffold and adjuvant for FHbp...
December 26, 2017: Vaccine
https://www.readbyqxmd.com/read/29275971/-monoarthritis-in-neisseria-meningitidis-what-instructions-for-contact-people
#8
Laure Pouliquen, Anne Daoudal, Valérie Rabier, Sylvette Marleix, Gregory Lucas, Bernard Fraisse, Philippe Violas
No abstract text is available yet for this article.
December 21, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/29261797/correction-identifying-optimal-vaccination-strategies-for-serogroup-a-neisseria-meningitidis-conjugate-vaccine-in-the-african-meningitis-belt
#9
Sara Tartof, Amanda Cohn, Félix Tarbangdo, Mamoudou H Djingarey, Nancy Messonnier, Thomas A Clark, Jean Ludovic Kambou, Ryan Novak, Fabien V K Diomandé, Isaïe Medah, Michael L Jackson
[This corrects the article DOI: 10.1371/journal.pone.0063605.].
2017: PloS One
https://www.readbyqxmd.com/read/29247204/antibacterial-activity-of-ceramide-and-ceramide-analogs-against-pathogenic-neisseria
#10
Jérôme Becam, Tim Walter, Anne Burgert, Jan Schlegel, Markus Sauer, Jürgen Seibel, Alexandra Schubert-Unkmeir
Certain fatty acids and sphingoid bases found at mucosal surfaces are known to have antibacterial activity and are thought to play a more direct role in innate immunity against bacterial infections. Herein, we analysed the antibacterial activity of sphingolipids, including the sphingoid base sphingosine as well as short-chain C6 and long-chain C16-ceramides and azido-functionalized ceramide analogs against pathogenic Neisseriae. Determination of the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) demonstrated that short-chain ceramides and a ω-azido-functionalized C6-ceramide were active against Neisseria meningitidis and N...
December 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29240724/large-outbreak-of-neisseria-meningitidis-serogroup-c-nigeria-december-2016-june-2017
#11
Chimeremma Nnadi, John Oladejo, Sebastian Yennan, Adesola Ogunleye, Chidinma Agbai, Lawal Bakare, Mohammed Abdulaziz, Amina Mohammed, Mary Stephens, Kyadindi Sumaili, Olivier Ronveaux, Helen Maguire, Debra Karch, Mahmood Dalhat, Martin Antonio, Andre Bita, Ifeanyi Okudo, Patrick Nguku, Ryan Novak, Omotayo Bolu, Faisal Shuaib, Chikwe Ihekweazu
On February 16, 2017, the Ministry of Health in Zamfara State, in northwestern Nigeria, notified the Nigeria Centre for Disease Control (NCDC) of an increased number of suspected cerebrospinal meningitis (meningitis) cases reported from four local government areas (LGAs). Meningitis cases were subsequently also reported from Katsina, Kebbi, Niger, and Sokoto states, all of which share borders with Zamfara State, and from Yobe State in northeastern Nigeria. On April 3, 2017, NCDC activated an Emergency Operations Center (EOC) to coordinate rapid development and implementation of a national meningitis emergency outbreak response plan...
December 15, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29237374/maze-antitoxin-of-toxin-antitoxin-system-and-fbpa-as-reliable-targets-to-eradication-of-neisseria-meningitidis
#12
Abbas Maleki, Sobhan Ghafourian, Iraj Pakzad, Behzad Badakhsh, Nourkhoda Sadeghifard
BACKGROUND: Neisseria meningitidis is ‎considered as a dangerous pathogen ‎threaten human health. Now a day, the new drug target is focused. Toxin antitoxin (TA) system recently identified as an antimicrobial drug target. Also, in N. meningitidis iron-uptake system could be an interesting target for drug discovery. METHODS: Therefore, in this study fbpA and mazE genes were chosen as new antimicrobial targets and treated with antisense peptide nucleic ‎acid (PNA)...
December 12, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29233459/invasive-meningococcal-disease-due-to-ciprofloxacin-resistant-neisseria-meningitidis-sequence-type-4821-the-first-case-in-japan
#13
Yu Kawasaki, Kousaku Matsubara, Hideyuki Takahashi, Masatomo Morita, Makoto Ohnishi, Masayuki Hori, Kenichi Isome, Aya Iwata, Hiroyuki Nigami, Mami Ikemachi, Go Yamamoto, Kiyofumi Ohkusu
We present a 4-year-old girl who developed invasive meningococcal disease (IMD) caused by Neisseria meningitidis serogroup C sequence type (ST)-4821. She was hospitalized due to fever, vomiting, rash and altered consciousness. Serogroup C N. meningitidis was isolated from blood culture taken on admission and was confirmed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry, a biochemical test, and molecular microbiological analysis. The patient was successfully treated with 50 mg/kg ceftriaxone every 12 hours for 7 days without any complications...
December 7, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29228283/interaction-of-neisseria-meningitidis-group-x-n-acetylglucosamine-1-phosphotransferase-with-its-donor-substrate
#14
Shonoi A Ming, Ebony Cottman-Thomas, Natalee C Black, Yi Chen, Vamsee Veeramachineni, Dwight C Peterson, Xi Chen, Lauren M Tedaldi, Gerd K Wagner, Chao Cai, Robert J Linhardt, Willie F Vann
Neisseria meningitidis Group X is an emerging cause of bacterial meningitis in the Sub-Saharan Africa. The capsular polysaccharide of Group X is a homopolymer of N-acetylglucosamine α(1-4) phosphate and is a vaccine target for prevention of disease associated with this meningococcal serogroup. We have demonstrated previously that the formation of the polymer is catalyzed by a phosphotransferase which transfers N- acetylglucosamine-1-phosphate from UDP-N-acetylglucosamine to the 4- hydroxyl of the N-acetylglucosamine on the non-reducing end of the growing chain...
December 8, 2017: Glycobiology
https://www.readbyqxmd.com/read/29219762/establishing-the-critical-role-of-peripheral-blood-vessel-colonisation-by-neisseria-meningitidis-in-invasive-meningococcal-disease
#15
Ronan F O'Toole
In this issue of Virulence, Capel and colleagues describe the use of a unique humanised mouse model to elucidate specific interactions between Neisseria meningitidis and human endothelial cells during blood-borne infection in vivo. Here, a number of the key findings from their study and their implications for our understanding of invasive meningococcal disease are explored.
December 8, 2017: Virulence
https://www.readbyqxmd.com/read/29216588/nmr-study-of-mutations-of-glycine-52-of-the-catalytic-domain-of-diphtheria-toxin
#16
Simon Sauvé, Geneviève Gingras, Yves Aubin
Cross-reacting-material 197 (CRM197) is a naturally occurring non-toxic mutant of diphtheria toxin (DT) that is one of the few carrier protein used in the manufacture of polysaccharide vaccines targeting bacterial pathogens such as Neisseria meningitidis, Streptococcus pneumaniae and Haemophilus influenzae. A detailed explanation in structural terms for the lack of toxicity has started to emerge with the report of the X-ray structure of CRM197. Here, we present an NMR spectroscopy study of the wild-type catalytic domain of diphtheria toxin and the effects of mutations at residue 52 on its conformation...
December 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29208200/-primary-septic-arthritis-is-a-rare-atypical-manifestation-of-invasive-meningococcal-disease
#17
Anne Katrine Bisgaard, Steen Kåre Fagerberg, Ulla Hjort
We present a case report of a 50-year-old man diagnosed with a primary septic arthritis with invasive Neisseria meningitidis serogroup W (MenW) clonal complex 11 identified with culture in blood and synovial fluid. The patient recovered from rapidly instituted relevant antibiotics and synovectomy, but there may be a risk of fatal delayed diagnosis and treatment by an atypical manifestation of invasive meningococcal disease. Invasive MenW disease has been increasing in recent years and has been described with atypical presentations...
November 27, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/29207945/meningococcal-arthritis-and-myopericarditis-a-case-report
#18
Lloyd Steele, Katie Bechman, Eoghan De Barra, Charles Mackworth-Young
BACKGROUND: We report the first adult case of Neisseria meningitidis W-135 presenting with meningococcal arthritis and myopericarditis concomitantly, without other classical features of meningococcal disease. CASE PRESENTATION: A 67-year-old Caucasian man presented with acute-onset polyarthralgia, myalgia, and fever. On examination he had polyarticular synovitis. An electrocardiogram (ECG) demonstrated ST-elevation in leads I, II, III, aVF, and V2-V6 without reciprocal depression, and a high-sensitivity troponin level was significantly elevated...
December 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29207725/rapid-and-accurate-diagnosis-of-acute-pyogenic-meningitis-due-to-streptococcus-pneumoniae-haemophilus-influenzae-type-b-and-neisseria-meningitidis-using-a-multiplex-pcr-assay
#19
Rajeev Seth, Peela Sree Ramchandra Murthy, Sujatha Sistla, Mahadevan Subramanian, Kadhiravan Tamilarasu
Introduction: Acute bacterial meningitis is one of the major causes of morbidity and mortality in children and geriatric population, especially in developing countries. Methods of identification are standard culture and other phenotypic tests in many resource poor settings. Aim: To use molecular methods for the improvement of aetiological diagnosis of acute pyogenic meningitis in patients. Materials and Methods: CSF samples of 125 patients were included for the study...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29203096/meningococcal-disease-a-clinical-and-epidemiological-review
#20
REVIEW
Rodrigo Siqueira Batista, Andréia Patrícia Gomes, Jorge Luiz Dutra Gazineo, Paulo Sérgio Balbino Miguel, Luiz Alberto Santana, Lisa Oliveira, Mauro Geller
Meningococcal disease is the acute infection caused by Neisseria meningitidis, which has humans as the only natural host. The disease is widespread around the globe and is known for its epidemical potential and high rates of lethality and morbidity. The highest number of cases of the disease is registered in the semi-arid regions of sub-Saharan Africa. In Brazil, it is endemic with occasional outbreaks, epidemics and sporadic cases occurring throughout the year, especially in the winter. The major epidemics of the disease occurred in Brazil in the 70's caused by serogroups A and C...
November 2017: Asian Pacific Journal of Tropical Medicine
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