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https://www.readbyqxmd.com/read/28525340/detection-of-bordetella-avium-by-taqman-real-time-pcr-in-tracheal-swabs-from-wildlife-birds
#1
T Stenzel, D Pestka, B Tykałowski, M Śmiałek, A Koncicki, A Bancerz-Kisiel
Bordetella avium, the causing agent of bordetellosis, a highly contagious infection of the respiratory tract in young poultry, causes significant losses in poultry farming throughout the world. Wildlife birds can be a reservoir of various pathogens that infect farm animals. For this reason the studies were conducted to estimate the prevalence of Bordetella avium in wildlife birds in Poland. Tracheal swab samples were collected from 650 birds representing 27 species. The bacterial DNA was isolated directly from the swabs and screened for Bordetella avium by TaqMan real-time PCR...
March 28, 2017: Polish Journal of Veterinary Sciences
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
#2
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
#3
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/28513461/the-importance-of-bordetella-pertussis-strains-which-do-not-produce-virulence-factors-in-the-epidemiology-of-pertussis
#4
Maciej Polak, Anna Lutyńska
Bordetella pertussis strains, which have lost the ability to produce antigens, such as pertactin - Prn, pertussis toxin - Ptx, filamentous haemagglutinin - FHA, fimbriae type 2 and 3 - Fim 2 and 3, tracheal colonization factor - TcfA, have recently been isolated in countries with a high vaccination coverage. The emergence of such isolates might have resulted from B. pertussis natural evolution course or adaptive mechanisms, allowing increased circulation of the pathogen in vaccinated populations. So far, the majority of described mutants were deficient in the Prn production...
May 9, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
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/28511667/epidemiology-of-pertussis-in-casablanca-morocco-contribution-of-conventional-and-molecular-diagnosis-tools
#6
Khalid Katfy, Nicole Guiso, Idrissa Diawara, Khalid Zerouali, Bouchra Slaoui, Zineb Jouhadi, Abdelhadi Zineddine, Houria Belabbes, Naima Elmdaghri
BACKGROUND: Pertussis, a vaccine preventable disease, is still responsible of significant morbidity and mortality around the world, mostly in newborns. The aim of the present study was (1) to introduce pertussis surveillance in the major pediatric hospital of Casablanca (2) to analyze the prevalence of pertussis among children under 14 years of age and their entourage in Casablanca, Morocco. METHODS: This is a prospective and non-case controlled study, including children suspected of Pertussis admitted at the Abderrahim Harouchi Pediatric Hospital in Casablanca, from January 2013 to June 2015...
May 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28507245/conformational-changes-of-inter-domain-linker-mediate-mechanical-signal-transmission-in-sensor-kinase-bvgs
#7
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/28500733/bordetella-effector-bopn-is-translocated-into-host-cells-via-its-n-terminal-residues
#8
Akio Abe, Ryutaro Nishimura, Asaomi Kuwae
Bordetella bronchiseptica infects a wide variety of mammals, and the type III secretion system (T3SS) is involved in the long-term colonization of Bordetella in the trachea and lung. The T3SS translocates virulence factors (commonly referred to as effectors) into host cells, leading to alteration of the host physiological function. The Bordetella effectors BopN and BteA are known to have roles in the up-regulation of IL-10 and the cytotoxicity, respectively. Nevertheless, the mechanism by which BopN is translocated into host cells has not been examined in sufficient detail...
May 13, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28493897/characterization-of-a-bvg-regulated-fatty-acid-methyl-transferase-in-bordetella-pertussis
#9
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/28490424/waning-immunity-and-microbial-vaccines-workshop-of-the-national-institute-of-allergy-and-infectious-diseases
#10
Xin-Xing Gu, Stanley A Plotkin, Kathryn M Edwards, Alessandro Sette, Kingston H G Mills, Ofer Levy, Andrea J Sant, Annie Mo, William Alexander, Kristina T Lu, Christopher E Taylor
Since the middle of the 20th century, vaccines have made a significant public health impact controlling infectious diseases globally. Although long-term protection has been achieved with some vaccines, immunity wanes over time with others, resulting in outbreaks or epidemics of infectious diseases. Long-term protection against infectious agents with complex life cycles and antigenic variation remains a key challenge. Novel strategies to characterize the short and long-term immune responses to vaccines, and to induce immune responses that mimic natural infection have recently emerged...
May 10, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28484063/clinical-diagnosis-of-bordetella-pertussis-infection-a-systematic-review
#11
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/28476731/erratum-for-carbonetti-et-al-highlights-of-the-11th-international-bordetella-symposium-from-basic-biology-to-vaccine-development
#12
Nicholas H Carbonetti, Carl Heinz Wirsing von König, Ruiting Lan, Francoise Jacob-Dubuisson, Peggy A Cotter, Rajendar Deora, Tod J Merkel, Cécile A van Els, Camille Locht, Daniela Hozbor, Maria E Rodriguez
No abstract text is available yet for this article.
May 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28469433/using-spatial-analysis-to-inform-community-immunization-strategies
#13
REVIEW
Moises E Maravi, Lauren E Snyder, L Dean McEwen, Kathryn DeYoung, Arthur J Davidson
INTRODUCTION: Recent pertussis outbreaks in the United States suggest our response to local disease outbreaks (eg, vaccine-preventable Bordetella pertussis) may benefit from understanding and applying spatial analytical methods that use data from immunization information systems at a subcounty level. METHODS: A 2012 study on Denver, CO, residents less than 19 years of age confirmed pertussis cases and immunization information system records were geocoded and aggregated to the census tract (CT) level...
2017: Biomedical Informatics Insights
https://www.readbyqxmd.com/read/28463965/ancient-bacteria-amoeba-relationships-and-pathogenic-animal-bacteria
#14
Joan E Strassmann, Longfei Shu
Long before bacteria infected humans, they infected amoebas, which remain a potentially important reservoir for human disease. Diverse soil amoebas including Dictyostelium and Acanthamoeba can host intracellular bacteria. Though the internal environment of free-living amoebas is similar in many ways to that of mammalian macrophages, they differ in a number of important ways, including temperature. A new study in PLOS Biology by Taylor-Mulneix et al. demonstrates that Bordetella bronchiseptica has two different gene suites that are activated depending on whether the bacterium finds itself in a hot mammalian or cool amoeba host environment...
May 2017: PLoS Biology
https://www.readbyqxmd.com/read/28452085/use-of-chimeric-type-iv-secretion-systems-to-define-contributions-of-outer-membrane-subassemblies-for-contact-dependent-translocation
#15
Jay E Gordon, Tiago R D Costa, Roosheel S Patel, Christian Gonzalez-Rivera, Mayukh K Sarkar, Elena V Orlova, Gabriel Waksman, Peter J Christie
Recent studies have shown that conjugation systems of Gram-negative bacteria are composed of distinct inner and outer membrane core complexes (IMCs and OMCCs, respectively). Here, we functionally characterized the OMCC, focusing first on a cap domain that forms a channel across the outer membrane. Strikingly, the OMCC caps of the Escherichia coli pKM101 Tra and Agrobacterium tumefaciens VirB/VirD4 systems are completely dispensable for substrate transfer, but required for formation of conjugative pili. The pKM101 OMCC cap and extended pilus also are dispensable for activation of a Pseudomonas aeruginosa type VI secretion system (T6SS)...
April 27, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28450511/complete-genome-sequence-of-bordetella-pertussis-pelita-iii-the-production-strain-for-an-indonesian-whole-cell-pertussis-vaccine
#16
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/28403204/improving-specificity-of-bordetella-pertussis-detection-using-a-four-target-real-time-pcr
#17
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/28403138/bordetella-bronchiseptica-exploits-the-complex-life-cycle-of-dictyostelium-discoideum-as-an-amplifying-transmission-vector
#18
Dawn L Taylor-Mulneix, Liron Bendor, Bodo Linz, Israel Rivera, Valerie E Ryman, Kalyan K Dewan, Shannon M Wagner, Emily F Wilson, Lindsay J Hilburger, Laura E Cuff, Christopher M West, Eric T Harvill
Multiple lines of evidence suggest that Bordetella species have a significant life stage outside of the mammalian respiratory tract that has yet to be defined. The Bordetella virulence gene (BvgAS) two-component system, a paradigm for a global virulence regulon, controls the expression of many "virulence factors" expressed in the Bvg positive (Bvg+) phase that are necessary for successful respiratory tract infection. A similarly large set of highly conserved genes are expressed under Bvg negative (Bvg-) phase growth conditions; however, these appear to be primarily expressed outside of the host and are thus hypothesized to be important in an undefined extrahost reservoir...
April 2017: PLoS Biology
https://www.readbyqxmd.com/read/28403055/immunogenicity-and-safety-of-10-valent-pneumococcal-nontypeable-haemophilus-influenzae-protein-d-conjugate-vaccine-phid-cv-administered-to-children-with-sickle-cell-disease-between-8-weeks-and-2-years-of-age-a-phase-iii-open-controlled-study
#19
Sodiomon B Sirima, Alfred Tiono, Zakaria Gansané, Mohamadou Siribié, Angèle Zongo, Alphonse Ouédraogo, Nancy François, Ana Strezova, Kurt Dobbelaere, Dorota Borys
BACKGROUND: Immunogenicity, safety and reactogenicity of the 10-valent pneumococcal nontypeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) were evaluated in children with sickle cell disease (SCD), who are at increased risk for infections. METHODS: In this phase III, open-label, single-center, controlled study in Burkina Faso (NCT01175083), children with SCD (S) or without SCD (NS) were assigned to 6 groups (N = 300): children 8-11 weeks of age (<6 months; <6S and <6NS groups) received 3 primary doses and a booster dose of PHiD-CV coadministered with routine childhood vaccines; children 7-11 months of age (7-11S and 7-11NS groups) received 2 primary doses and a booster dose of PHiD-CV; children 12-23 months of age (12-23S and 12-23NS groups) received 2 catch-up doses of PHiD-CV...
May 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28397465/variation-of-housekeeping-genes-in-clinical-isolates-and-vaccine-strains-of-bordetella-pertussis
#20
Masoumeh Fathi, Faezeh Haghighi, Fereshteh Shahcheraghi, Ebrahim Abbasi, Seyed Saeed Eshraghi, Sedighe Ghourchian, Hojjat Zeraati, Mehdi Yaseri, Masoumeh Douraghi, Fazel Shokri
BACKGROUND: Bordetella pertussis causes serious contagious infections, primarily in childhood. A whole-cell vaccine, diphtheria-tetanus-whole cell pertussis (DTwP), has been used to protect against pertussis in children in Iran, but the pertussis cases have been increasing during recent years. We determined the allelic variation level of housekeeping genes in isolates recovered from pertussis patients and vaccine strains used in national vaccination program. METHODS: Five clinical isolates, 2 vaccine strains and a Tohama I strain were studied through multilocus sequence typing (MLST) of housekeeping genes...
April 1, 2017: Clinical Laboratory
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