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https://www.readbyqxmd.com/read/28535276/live-attenuated-pertussis-vaccine-bpze1-protects-baboons-against-b-pertussis-disease-and-infection
#1
Camille Locht, James F Papin, Sophie Lecher, Anne-Sophie Debrie, Marcel Thalen, Ken Solovay, Keith Rubin, Nathalie Mielcarek
Evidence suggests that the resurgence of pertussis in many industrialized countries may result from the failure of current vaccines to prevent nasopharyngeal colonization by Bordetella pertussis, the principal causative agent of whooping cough. Here, we used a baboon model to test the protective potential of the novel, live attenuated pertussis vaccine candidate BPZE1. A single intranasal/intratracheal inoculation of juvenile baboons with BPZE1 resulted in transient nasopharyngeal colonization and induction of IgG and IgA to all antigens tested, while causing no adverse symptoms or leukocytosis...
May 23, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28529467/radiotherapy-for-pertussis-an-historical-assessment
#2
Edward J Calabrese, Gaurav Dhawan, Rachna Kapoor
X-ray therapy was used to treat pertussis/whooping cough during a 13-year period from 1923 to 1936 in North America and Europe. Twenty studies from clinicians in the United States reported that approximately 1500 cases of pertussis were treated by X-ray therapy usually with less than 0.5 erythema dose. Young children (<3 years) comprised about 70% to 80% of the cases, with the age of cases ranging from as young as 1 month to 50 years. In general, symptoms of severe coughing, vomiting episodes, and spasms were significantly relieved in about 85% of cases following up to 3 treatments, while about 15% of the cases showed nearly full relief after only 1 treatment...
April 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28524084/bordetella-holmesii-lipid-a-structures-and-corresponding-genomic-sequences-comparison-in-three-clinical-isolates-and-the-reference-strain-atcc-51541
#3
Valérie Bouchez, Sami AlBitar-Nehmé, Alexey Novikov, Nicole Guiso, Martine Caroff
Bordetella holmesii can cause invasive infections but can also be isolated from the respiratory tract of patients with whooping-cough like symptoms. For the first time, we describe the lipid A structure of B. holmesii reference strain ATCC 51541 (alias NCTC12912 or CIP104394) and those of three French B. holmesii clinical isolates originating from blood (Bho1) or from respiratory samples (FR4020 and FR4101). They were investigated using chemical analyses, gas chromatography-mass spectrometry (GC-MS), and matrix-assisted laser desorption ionization-mass spectrometry (MALDI-MS)...
May 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28514288/bordetella-parapertussis-outbreak-in-southeastern-minnesota-and-the-united-states-2014
#4
Vytas P Karalius, Stefanea L Rucinski, Jayawant N Mandrekar, Robin Patel
Whooping cough is traditionally ascribed to Bordetella pertussis; however, Bordetella parapertussis can cause a similar clinical syndrome. This study describes an outbreak of B. parapertussis in Southeastern Minnesota and the United States (US) in 2014. This was a retrospective analysis of Mayo Clinic and Mayo Medical Laboratories patients who tested positive for B. parapertussis from 2012 to 2014. The medical records of Mayo Clinic patients who tested positive in 2014 were reviewed for demographic information, presenting symptoms, disease course, and vaccination history...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28511929/clinical-characteristics-of-pertussis-associated-cough-in-adults-and-children-a-diagnostic-systematic-review-and-meta-analysis
#5
Abigail Moore, Helen F Ashdown, Bethany Shinkins, Nia W Roberts, Cameron C Grant, Daniel S Lasserson, Anthony Harnden
BACKGROUND: Pertussis (whooping cough) is a highly infective cause of cough that causes significant morbidity and mortality. Existing case definitions include paroxysmal cough, whooping and post-tussive vomiting but diagnosis can be difficult. We determined the diagnostic accuracy of clinical characteristics of pertussis-associated cough. METHODS: We systematically searched CINAHL, Embase, Medline and SCI-EXPANDED/CPCI-S up to June 2016. Eligible studies compared clinical characteristics in those positive and negative for Bordetella pertussis infection, confirmed by laboratory investigations...
May 13, 2017: Chest
https://www.readbyqxmd.com/read/28507245/conformational-changes-of-inter-domain-linker-mediate-mechanical-signal-transmission-in-sensor-kinase-bvgs
#6
Elodie Lesne, Elian Dupré, Camille Locht, Rudy Antoine, Françoise Jacob-Dubuisson
The whooping cough agent, Bordetella pertussis, controls the expression of its large virulence regulon in a coordinated manner through the two-component system BvgAS. BvgS is a dimeric, multi-domain sensor-kinase. Each monomer comprises in succession tandem periplasmic Venus flytrap (VFT) domains, a transmembrane segment, a cytoplasmic Per-ArnT-Sim (PAS) domain, a kinase module and additional phosphorelay domains. BvgS shifts between kinase and phosphatase modes of activity in response to chemical modulators that modify the clamshell motions of the VFT domains...
May 15, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28500407/phytochemical-profile-and-free-radical-nitric-oxide-no-scavenging-activity-of-averrhoa-bilimbi-l-fruit-extract
#7
Jagadish Kumar Suluvoy, V M Berlin Grace
Averrhoa bilimbi L. belongs to family Oxalidaceae. Traditionally, people use this plant (root, bark, leaves and fruits) for treating several illnesses include itches, boils, syphilis, whooping cough, hypertension, fever and inflammation. The aim of the study was to evaluate the nitric oxide (NO) scavenging activity and GC-MS analysis of A. bilimbi L. fruit extract. Averrhoa bilimbi L. fruits were collected for the preliminary phytochemical analysis, antioxidant scavenging activity and biologically important compounds were identified by GC-MS analysis...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28493897/characterization-of-a-bvg-regulated-fatty-acid-methyl-transferase-in-bordetella-pertussis
#8
Alex Rivera-Millot, Elodie Lesne, Luis Solans, Loic Coutte, Justine Bertrand-Michel, Philippe Froguel, Véronique Dhennin, David Hot, Camille Locht, Rudy Antoine, Françoise Jacob-Dubuisson
The whooping cough agent Bordetella pertussis controls the expression of its large virulence regulon in a coordinated manner through the two-component signal transduction system BvgAS. In addition to the genes coding for bona fide virulence factors, the Bvg regulon comprises genes of unknown function. In this work, we characterized a new Bvg-activated gene called BP2936. Homologs of BP2936 are found in other pathogenic Bordetellae and in several other species, including plant pathogens and environmental bacteria...
2017: PloS One
https://www.readbyqxmd.com/read/28484063/clinical-diagnosis-of-bordetella-pertussis-infection-a-systematic-review
#9
Mark H Ebell, Christian Marchello, Maria Callahan
BACKGROUND: Bordetella pertussis (BP) is a common cause of prolonged cough. Our objective was to perform an updated systematic review of the clinical diagnosis of BP without restriction by patient age. METHODS: We identified prospective cohort studies of patients with cough or suspected pertussis and assessed study quality using QUADAS-2. We performed bivariate meta-analysis to calculate summary estimates of accuracy and created summary receiver operating characteristic curves to explore heterogeneity by vaccination status and age...
May 2017: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/28473731/a-disability-act-the-vaccine-damage-payments-act-1979-and-the-british-government-s-response-to-the-pertussis-vaccine-scare
#10
Gareth Millward
The Vaccine Damage Payments Act 1979 provided a lump-sum social security benefit to children who had become severely disabled as a result of vaccination. It came in the wake of a scare over the safety of the whooping cough (pertussis) vaccine. Yet very little has been written about it. Existing literature focuses more on the public health and medical aspects of both the Act and the scare. This article uses material from the archives of disability organisations and official documents to show that this Act should be seen as part of the history of post-war British disability policy...
May 2017: Social History of Medicine: the Journal of the Society for the Social History of Medicine
https://www.readbyqxmd.com/read/28450511/complete-genome-sequence-of-bordetella-pertussis-pelita-iii-the-production-strain-for-an-indonesian-whole-cell-pertussis-vaccine
#11
Yusuf Sofyan Efendi, Dwi Susanti, Erman Tritama, Michelle Lueders Pasier, Gilang Nadia Niwan Putri, Sugeng Raharso, Iskandar, Pingkan Aditiawati, Ernawati Arifin Giri-Rachman, Biswarup Mukhopadhyay, Endang Purwantini
PT Bio Farma, the sole World Health Organization-approved Indonesian vaccine producer, manufactures a whole-cell whooping cough vaccine (wP) that, as part of a pentavalent diphtheria-tetanus-pertussis/hepatitis B/Haemophilus influenzae b (DTP/HB/Hib) vaccine, is used in Indonesia and many other countries. We report here the whole-genome sequence for Bordetella pertussis Pelita III, PT Bio Farma's wP production strain.
April 27, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28449735/maternal-pertussis-immunisation-clinical-gains-and-epidemiological-legacy
#12
Ana I Bento, Aaron A King, Pejman Rohani
The increase in whooping cough (pertussis) incidence in many countries with high routine vaccination coverage is alarming, with incidence in the US reaching almost 50,000 reported cases per year, reflecting incidence levels not seen since the 1950s. While the potential explanations for this resurgence remain debated, we face an urgent need to protect newborns, especially during the time window between birth and the first routine vaccination dose. Maternal immunisation has been proposed as an effective strategy for protecting neonates, who are at higher risk of severe pertussis disease and mortality...
April 13, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28403204/improving-specificity-of-bordetella-pertussis-detection-using-a-four-target-real-time-pcr
#13
Helena Martini, Liselot Detemmerman, Oriane Soetens, Erlangga Yusuf, Denis Piérard
The incidence of whooping cough, a contagious respiratory disease caused by Bordetella pertussis, is on the rise despite existing vaccination programmes. Similar, though usually milder, respiratory symptoms may be caused by other members of the Bordetella genus: B. parapertussis, B. holmesii, and B. bronchiseptica. Pertussis diagnosis is mostly done using PCR, but the use of multiple targets is necessary in order to differentiate the different Bordetella spp. with sufficient sensitivity and specificity. In this study we evaluate a multiplex PCR assay for the differentiation of B...
2017: PloS One
https://www.readbyqxmd.com/read/28396322/camp-elevating-capacity-of-the-adenylate-cyclase-toxin-hemolysin-is-sufficient-for-lung-infection-but-not-for-full-virulence-of-bordetella-pertussis
#14
Karolina Skopova, Barbora Tomalova, Ivan Kanchev, Pavel Rossmann, Martina Svedova, Irena Adkins, Ilona Bibova, Jakub Tomala, Jiri Masin, Nicole Guiso, Radim Osicka, Radislav Sedlacek, Marek Kovar, Peter Sebo
The adenylate cyclase toxin-hemolysin (CyaA, ACT or AC-Hly) of Bordetella pertussis targets phagocytic cells expressing the complement receptor 3 (CR3, Mac-1, αMβ2 integrin or CD11b/CD18). CyaA delivers into cells an N-terminal adenylyl cyclase (AC) enzyme domain that is activated by cytosolic calmodulin and catalyzes unregulated conversion of cellular ATP into cAMP, a key second messenger subverting bactericidal activities of phagocytes. In parallel, the hemolysin (Hly) moiety of CyaA forms cation-selective hemolytic pores that permeabilize target cell membranes...
April 10, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28396321/albumin-in-the-presence-of-calcium-elicits-a-massive-increase-in-extracellular-bordetella-adenylate-cyclase-toxin
#15
Laura A Gonyar, Mary C Gray, Gregory J Christianson, Borna Mehrad, Erik L Hewlett
Pertussis (whooping cough), caused by Bordetella pertussis (Bp), is resurging in the United States and worldwide. Adenylate cyclase toxin (ACT) is a critical factor in establishing infection with Bp and acts by specifically inhibiting the response of myeloid leukocytes to the pathogen. We report here that serum components, as discovered during growth in fetal bovine serum (FBS), elicit a robust increase in the amount of ACT, and ≥90% of this ACT is localized to the supernatant, unlike growth without FBS in which ≥90% is associated with the bacterium...
April 10, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28381398/whooping-cough-booster-in-pregnancy-is-highly-protective-for-newborns-study-finds
#16
Jacqui Wise
No abstract text is available yet for this article.
April 4, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28376739/seroprevalence-of-bordetella-pertussis-antibodies-in-adults-in-hungary-results-of-an-epidemiological-cross-sectional-study
#17
Péter Torzsa, Raghavendra Devadiga, Monica Tafalla
BACKGROUND: Pertussis (whooping cough) is well known to be underreported, particularly among adults, who can act as an infectious reservoir, potentially putting susceptible newborns at risk of serious illness. The purpose of this study was to estimate the seroprevalence of pertussis in adults in Hungary. METHODS: This epidemiological, cross-sectional study was conducted in adults in five general practitioners' practices in Hungary. Serum anti-pertussis toxin immunoglobulin G (anti-PT IgG) antibody levels were analyzed using enzyme-linked immunosorbent assay...
April 4, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28288596/needles-jabs-and-jags-a-qualitative-exploration-of-barriers-and-facilitators-to-child-and-adult-immunisation-uptake-among-gypsies-travellers-and-roma
#18
Cath Jackson, Helen Bedford, Francine M Cheater, Louise Condon, Carol Emslie, Lana Ireland, Philippa Kemsley, Susan Kerr, Helen J Lewis, Julie Mytton, Karen Overend, Sarah Redsell, Zoe Richardson, Christine Shepherd, Lesley Smith, Lisa Dyson
BACKGROUND: Gypsies, Travellers and Roma (referred to as Travellers) are less likely to access health services including immunisation. To improve immunisation rates, it is necessary to understand what helps and hinders individuals in these communities in taking up immunisations. This study had two aims. 1. Investigate the views of Travellers in the UK on the barriers and facilitators to acceptability and uptake of immunisations and explore their ideas for improving immunisation uptake; 2...
March 14, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28283011/-investigation-of-seropositivity-of-bordetella-pertussis-in-adults-in-a-university-hospital
#19
Lütfiye Öksüz, Nezahat Gürler, Ali Ağaçfidan
Whooping cough is a vaccine-preventable infectious diseases caused by Bordetella pertussis/parapertussis. Despite of routine immunization programs in the world, pertussis still remains endemic. Recently unvaccinated or partially immunized infants have infected with this pathogen and also increase of incidence was observed in adolescents and adults. The source of pertussis in newborns are attributed to household, especially due to the family members. Theaim of this study was to determine B.pertussis IgG antibody positivity by ELISA method in adults...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28186111/stability-structural-and-functional-properties-of-a-monomeric-calcium-loaded-adenylate-cyclase-toxin-cyaa-from-bordetella-pertussis
#20
Sara E Cannella, Véronique Yvette Ntsogo Enguéné, Marilyne Davi, Christian Malosse, Ana Cristina Sotomayor Pérez, Julia Chamot-Rooke, Patrice Vachette, Dominique Durand, Daniel Ladant, Alexandre Chenal
Bordetella pertussis, the causative agent of whooping cough, secretes an adenylate cyclase toxin, CyaA, which invades eukaryotic cells and alters their physiology by cAMP overproduction. Calcium is an essential cofactor of CyaA, as it is the case for most members of the Repeat-in-ToXins (RTX) family. We show that the calcium-bound, monomeric form of CyaA, hCyaAm, conserves its permeabilization and haemolytic activities, even in a fully calcium-free environment. In contrast, hCyaAm requires sub-millimolar calcium in solution for cell invasion, indicating that free calcium in solution is involved in the CyaA toxin translocation process...
February 10, 2017: Scientific Reports
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