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https://www.readbyqxmd.com/read/27905894/seroprevalence-of-bordetella-pertussis-specific-immunoglobulin-g-antibody-levels-among-asymptomatic-individuals-aged-4-to-24%C3%A2-years-a-descriptive-cross-sectional-study-from-sri-lanka
#1
Shamithra Sigera, Jennifer Perera, Jeyanthakumar Rasarathinam, Dulani Samaranayake, Dileepa Ediriweera
BACKGROUND: In Sri Lanka pertussis continues to circulate in the community and cases among adolescents and adults have been reported despite 95% coverage of the four dose pertussis vaccination during early childhood. Waning of immunity following natural infection or immunization may contribute to the persistent circulation. An adolescent booster dose is not included in the national immunization schedule of Sri Lanka, although this is routine practice in many countries. Therefore information on immunity to pertussis in the adolescent group is needed prior to considering vaccination schedule changes...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27905535/bordetella-pertussis-outer-membrane-vesicle-vaccine-confers-equal-efficacy-in-mice-with-milder-inflammatory-responses-compared-to-a-whole-cell-vaccine
#2
René H M Raeven, Jolanda Brummelman, Jeroen L A Pennings, Larissa van der Maas, Wichard Tilstra, Kina Helm, Elly van Riet, Wim Jiskoot, Cécile A C M van Els, Wanda G H Han, Gideon F A Kersten, Bernard Metz
The demand for improved pertussis vaccines is urgent due to the resurgence of whooping cough. A deeper understanding of the mode of action of pertussis vaccines is required to achieve this improvement. The vaccine-induced effects of a candidate outer membrane vesicle vaccine (omvPV) and a classical protective but reactogenic whole cell vaccine (wPV) were comprehensively compared in mice. The comparison revealed essential qualitative and quantitative differences with respect to immunogenicity and adverse effects for these vaccines...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27902326/caenimicrobium-hargitense-gen-nov-sp-nov-a-new-member-of-the-family-alcaligenaceae-betaproteobacteria-isolated-from-activated-sludge
#3
Tamas Felfoldi, Peter Schumann, Anikó Mentes, Zsuzsa Kéki, István Máthé, Erika Tóth
A new betaproteobacterium, CGII-59m2T, was isolated from an activated sludge bioreactor which treated landfill leachate. The 16S rRNA gene sequence analysis revealed that strain CGII-59m2T belonged to the family Alcaligenaceae and shared the highest pairwise similarity values with Parapusillimonas granuli LMG 24012T (97.7%), various Bordetella species (97.3-97.0%) and Candidimonas nitroreducens LMG 24812T (97.0%). Strain CGII-59m2T was rod-shaped, non-motile, oxidase and catalase positive. The predominant fatty acids were C16:1ω7c, C16:0, cycloC17:0 and C18:1ω7c, the major respiratory quinone was Q-8, and the main polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and an unknown phospholipid...
November 17, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902262/saccharedens-versatilis-gen-nov-sp-nov-a-sugar-degrading-member-of-the-burkholderiales-isolated-from-cephalotes-rohweri-ant-guts
#4
Jonathan Y Lin, William J Hobson, John T Wertz
Cephalotes "turtle" ants host a core group of gut-associated symbionts, but their potential contributions to ant nutrition and disease resistance remain uncharacterized in vitro. To gain a better understanding of the metabolic capability of core symbionts belonging to the Burkholderiales, we cultivated and characterized strain CAG32T, isolated from the guts of Cephalotes rohweri ants. Strain CAG32T was rod-shaped, Gram-negative, motile, and formed pale-white colonies on trypticase soy agar. Optimum growth occurred under an atmosphere of 20% O2 supplemented with 1% CO2...
November 9, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27886031/pertussis-in-north-central-and-northwestern-regions-of-algeria
#5
Nabila Benamrouche, Hassiba Tali Maamar, Malika Lazri, Sonia Hasnaoui, Abdelkarim Radoui, Ourida Lafer, Rachida Boukari, Chawki Kaddache, Zakia Arrada, Kheira Rahal
INTRODUCTION: Pertussis outbreaks continue to occur in many countries despite high vaccination coverage. Under-diagnosed cases in adolescents and adults may result in increased transmission to infants, who are at risk of severe pertussis. Additional measures to protect both groups should be considered. METHODOLOGY: Nasopharyngeal samples and sera were collected from patients and household contacts with clinically suspected pertussis. Diagnoses were confirmed by culture, real-time polymerase chain reaction (PCR), and serology...
November 24, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/27864475/il-17-producing-innate-and-pathogen-specific-tissue-resident-memory-%C3%AE-%C3%AE-t-cells-expand-in-the-lungs-of-bordetella-pertussis-infected-mice
#6
Alicja Misiak, Mieszko M Wilk, Mathilde Raverdeau, Kingston H G Mills
γδ T cells play a role in protective immunity to infection at mucosal surface, but also mediate pathology in certain autoimmune diseases through innate IL-17 production. Recent reports have suggested that γδ T cells can have memory analogous to conventional αβ T cells. In this study we have examined the role of γδ T cells in immunity to the respiratory pathogen Bordetella pertussis γδ T cells, predominantly Vγ4(-)γ1(-) cells, produced IL-17 in the lungs as early as 2 h after infection. The bacterial burden during primary infection was significantly enhanced and the induction of antimicrobial peptides was reduced in the absence of early IL-17...
November 18, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27860343/isolation-of-campylobacter-spp-from-client-owned-dogs-and-cats-and-retail-raw-meat-pet-food-in-the-manawatu-new-zealand
#7
K Bojanić, A C Midwinter, J C Marshall, L E Rogers, P J Biggs, E Acke
Campylobacter causes acute gastroenteritis in people worldwide and is frequently isolated from food, animals and the environment. The disease is predominately food-borne but many routes of transmission and sources of infection have been described, including contact with pets. The prevalence of Campylobacter spp. in dogs and cats varies widely, and data on New Zealand pets are limited. This study aimed to investigate the prevalence of Campylobacter spp. in dogs, cats and retail raw meat pet food products in New Zealand and to characterize Campylobacter jejuni isolates using multilocus sequence typing (MLST)...
November 12, 2016: Zoonoses and Public Health
https://www.readbyqxmd.com/read/27857241/hospital-costs-of-bordetella-pertussis-in-new-zealand-children
#8
Anusha Ganeshalingham, Peter Reed, Cameron Grant, Brian Anderson, Emma Best, John Beca
AIM: To estimate hospitalisation costs for children with pertussis in New Zealand. METHOD: All children less than 16 years of age and hospitalised with pertussis between 01/01/2003 and 31/12/2013 were identified from the National Minimum Data Set and the National Paediatric Intensive Care Unit database. The cost of hospital care was estimated by multiplying the diagnosis-related group cost-weight by the national price and inflating to 2013/2014 values. RESULTS: There were 1,456 children with pertussis admitted to hospital including 65 admissions to the paediatric intensive care unit...
November 18, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27854516/evasion-of-neutrophil-extracellular-traps-by-respiratory-pathogens
#9
Daniel M L Storisteanu, Joanna M Pocock, Andrew S Cowburn, Jatinder K Juss, Angalee Nadesalingam, Victor Nizet, Edwin R Chilvers
The release of neutrophil extracellular traps (NETs) is a major immune mechanism intended to capture pathogens. These histone and protease-coated DNA structures are released by neutrophils in response to a variety of stimuli, including respiratory pathogens, and have been identified in the airways of patients with respiratory infection, cystic fibrosis, acute lung injury, primary graft dysfunction and COPD. NET production has been demonstrated in the lungs of mice infected with Staphylococcus aureus, Klebsiella pneumoniae and Aspergillus fumigatus...
November 17, 2016: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/27849178/modulation-of-pertussis-and-adenylate-cyclase-toxins-by-sigma-factor-rpoe-in-bordetella-pertussis
#10
Mariette Barbier, Dylan Boehm, Emel Sen-Kiliç, Claire Bonnin, Theo Pinheiro, Casey Hoffman, Mary Gray, Erik Hewlett, F Heath Damron
Bordetella pertussis is a human pathogen that can infect the respiratory tract and cause the disease known as whooping cough. B. pertussis uses pertussis toxin (PT) and adenylate cyclase toxin (ACT) to kill and modulate host cells to allow the pathogen to survive and persist. B. pertussis encodes many uncharacterized transcription factors and very little is known about their functions. RpoE is a sigma factor which in other bacteria, responds to oxidative, heat, and other environmental stresses. RseA is a negative regulator of RpoE that sequesters the sigma factor to regulate gene expression based on conditions...
November 14, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27847501/chicken-igy-fc-linked-to-bordetella-avium-ompa-and-taishan-pinus-massoniana-pollen-polysaccharide-adjuvant-enhances-macrophage-function-and-specific-immune-responses
#11
Wenwen Dong, Hao Zhang, He Huang, Jianbo Zhou, Liping Hu, Ailing Lian, Lijun Zhu, Ningning Ma, Pingping Yang, Kai Wei, Ruiliang Zhu
Fc-fusion technologies, in which immunoglobulin Fc is genetically fused to an antigenic protein, have been developed to confer antibody-like properties to proteins and peptides. Mammalian IgG Fc fusion exhibits improved antigen-induced immune responses by providing aggregates with high avidity for the IgG Fc receptor and salvaging the antigenic portion from endosomal degradation. However, whether the linked chicken IgY Fc fragment shares similar characteristics to mammalian IgG Fc remains unclear. In this study, we linked the chicken IgY Fc gene to the outer membrane protein A (ompA) of Bordetella avium through overlapping PCR...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27815382/therapeutic-treatment-with-sphingosine-1-phosphate-receptor-1-ligands-reduces-pertussis-inflammatory-pathology-by-a-pertussis-toxin-insensitive-mechanism
#12
Ciaran Skerry, Karen Scanlon, Jeremy Ardanuy, Drew Roberts, Li Zhang, Hugh Rosen, Nicholas H Carbonetti
Recent data have demonstrated the potential of sphingosine-1-phosphate receptor (S1PR) agonism in the treatment of infectious diseases. Previously we used a murine model of Bordetella pertussis infection to demonstrate that treatment with the S1PR agonist AAL-R reduces pulmonary inflammation during infection. Here we show that this effect is mediated via the S1PR1 receptor on LysM+ (myeloid) cells. Signaling via this receptor results in reduced lung inflammation and cellular recruitment as well as reduced morbidity and mortality in a neonatal mouse model of disease...
November 3, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27811532/identifying-children-at-risk-of-malignant-bordetella-pertussis-infection
#13
Anusha Ganeshalingham, Brent McSharry, Brian Anderson, Cameron Grant, John Beca
OBJECTIVE: To identify factors associated with malignant pertussis. DESIGN: A retrospective case notes review from January 2003 to August 2013. Area under the receiver-operator characteristic curve was used to determine how well vital sign and white cell characteristics within 48 hours of hospital presentation identified children with malignant pertussis. SETTING: The national children's hospital in Auckland, New Zealand. PATIENTS: One hundred fifty-two children with pertussis...
November 1, 2016: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/27802485/modeling-the-effects-of-priming-with-the-whole-cell-bordetella-pertussis-vaccine-reply
#14
Haedi DeAngelis, Samuel V Scarpino, Benjamin M Althouse
No abstract text is available yet for this article.
October 31, 2016: JAMA Pediatrics
https://www.readbyqxmd.com/read/27802457/modeling-the-effects-of-priming-with-the-whole-cell-bordetella-pertussis-vaccine
#15
Thomas Snelling, Peter McIntyre
No abstract text is available yet for this article.
October 31, 2016: JAMA Pediatrics
https://www.readbyqxmd.com/read/27800148/prevalence-and-seasonal-distribution-of-respiratory-viruses-during-the-2014-2015-season-in-istanbul
#16
Safak Goktas, Mumtaz Cem Sirin
BACKGROUND: Acute respiratory tract infection (ARTI) is one of the most common infections worldwide, causing significant morbidity and mortality. OBJECTIVES: This study was conducted to determine the prevalence and seasonal distribution of respiratory viruses in our region, in children and adults with a pre-diagnosis of ARTI. METHODS: A total of 845 nasopharyngeal swab specimens were analyzed with the RespiFinder Smart 22 kit (PathoFinder BV, Netherlands) and the Rotor-Gene 6000 real-time PCR system...
September 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27795250/complete-genome-sequences-of-four-different-bordetella-sp-isolates-causing-human-respiratory-infections
#17
Michael R Weigand, Yanhui Peng, Vladimir Loparev, Dhwani Batra, Katherine E Bowden, Pamela K Cassiday, Jamie K Davis, Taccara Johnson, Phalasy Juieng, Christine E Miner, Lori Rowe, Mili Sheth, M Lucia Tondella, Margaret M Williams
Species of the genus Bordetella associate with various animal hosts, frequently causing respiratory disease. Bordetella pertussis is the primary agent of whooping cough and other Bordetella species can cause similar cough illness. Here, we report four complete genome sequences from isolates of different Bordetella species recovered from human respiratory infections.
October 6, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27790866/identification-of-active-constraints-in-dynamic-flux-balance-analysis
#18
Ali Nikdel, Hector Budman
This study deals with the calibration of dynamic metabolic flux models that are formulated as the maximization of an objective subject to constraints. Two approaches was applied for identifying the constraints from data. In the first approach a minimal active number of limiting constraints is found based on data that are assumed to be bounded within sets whereas, in the second approach, the limiting constraints are found based on parametric sensitivity analysis. The ability of these approaches to finding the active limiting constraints was verified through their application to two case studies: an in-silico (simulated) data based study describing the growth of E...
October 28, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27783449/essential-role-of-bordetella-nadc-in-a-quinolinate-salvage-pathway-for-nad-biosynthesis
#19
Timothy J Brickman, Ryan J Suhadolc, Pamela J McKelvey, Sandra K Armstrong
NAD is produced via de novo biosynthesis pathways and by salvage or recycling routes. The classical Bordetella bacterial species are known to be auxotrophic for nicotinamide or nicotinic acid. This study confirmed that Bordetella bronchiseptica, Bordetella pertussis, and Bordetella parapertussis have the recycling/salvage pathway genes pncA and pncB, for use of nicotinamide or nicotinic acid, respectively, for NAD synthesis. Although these Bordetellae lack the nadA and nadB genes needed for de novo NAD biosynthesis, remarkably, they have one de novo pathway gene, nadC, encoding quinolinate phosphoribosyltransferase...
October 26, 2016: Molecular Microbiology
https://www.readbyqxmd.com/read/27780002/bordetella-pseudohinzii-as-a-confounding-organism-in-murine-models-of-pulmonary-disease
#20
Sarah E Clark, Jeanette E Purcell, Saad Sammani, Earl K Steffen, Marcus J Crim, Robert S Livingston, Cynthia Besch-Williford, Jeffrey D Fortman
A group studying acute lung injury observed an increased percentage of neutrophils in the bronchoalveolar lavage (BAL) fluid of mice. BAL was performed, and lung samples were collected sterilely from 5 C57BL/6 mice that had been bred inhouse. Pure colonies of bacteria, initially identified as Bordetella hinzii were cultured from 2 of the 5 mice which had the highest percentages of neutrophils (21% and 26%) in the BAL fluid. Subsequent sequencing of a portion of the ompA gene from this isolate demonstrated 100% homology with the published B...
2016: Comparative Medicine
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