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https://www.readbyqxmd.com/read/29778191/antimicrobial-susceptibility-and-genetic-relatedness-of-respiratory-tract-pathogens-in-weaner-pigs-over-a-12-month-period
#1
Lisa Niemann, Petra Müller, Jasmin Brauns, Rolf Nathaus, Franziska Schäkel, Kerstin Kipschull, Doris Höltig, Michael Wendt, Stefan Schwarz, Kristina Kadlec
The collaboration project VASIB aims at reducing the antibiotic consumption in pig production by integrating information from consulting expertise in clinical inspection, hygiene, epidemiology, microbiology and pharmacology. In this VASIB subproject, we investigated the antimicrobial susceptibility and relatedness of porcine respiratory tract pathogens. Bordetella bronchiseptica (n = 47), Pasteurella multocida (n = 18) and Streptococcus suis (n = 58) were obtained from weaner pigs at two farms. Antimicrobial susceptibility testing was performed by broth microdilution according to CLSI standards...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29776433/bordetella-pertussis-in-children-hospitalized-with-a-respiratory-infection-clinical-characteristics-and-pathogen-detection-in-household-contacts
#2
Juana Del Valle-Mendoza, Wilmer Silva-Caso, Miguel Angel Aguilar-Luis, Cristina Del Valle-Vargas, Erico Cieza-Mora, Johanna Martins-Luna, Ronald Aquino-Ortega, Andrea Silva-Vásquez, Jorge Bazán-Mayra, Pablo Weilg
OBJECTIVE: Describe the prevalence of Bordetella pertussis via PCR in children under 5 years old hospitalized as probable cases of pertussis and report the most common clinical features among them. RESULTS: A positive PCR result for B. pertussis was observed in 20.5% of our samples (18/88), one-third of them were from infants between 2 and 3 months old. The most common symptoms were paroxysms of coughing (88.9%), difficulty breathing (72.2%), cyanosis (77.8%) and fever (50%)...
May 18, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29774847/genomic-sequencing-of-bordetella-pertussis-for-epidemiology-and-global-surveillance-of-whooping-cough
#3
Valérie Bouchez, Julien Guglielmini, Mélody Dazas, Annie Landier, Julie Toubiana, Sophie Guillot, Alexis Criscuolo, Sylvain Brisse
Bordetella pertussis causes whooping cough, a highly contagious respiratory disease that is reemerging in many world regions. The spread of antigen-deficient strains may threaten acellular vaccine efficacy. Dynamics of strain transmission are poorly defined because of shortcomings in current strain genotyping methods. Our objective was to develop a whole-genome genotyping strategy with sufficient resolution for local epidemiologic questions and sufficient reproducibility to enable international comparisons of clinical isolates...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29771235/bordetella-pertussis-population-dynamics-and-phylogeny-in-japan-after-adoption-of-acellular-pertussis-vaccines
#4
Aldert Zomer, Nao Otsuka, Yukihiro Hiramatsu, Kazunari Kamachi, Naoko Nishimura, Takao Ozaki, Jan Poolman, Jeroen Geurtsen
Bordetella pertussis, the causative agent of whooping cough, has experienced a resurgence in the past 15 years, despite the existence of both whole-cell and acellular vaccines. Here, we performed whole genome sequencing analysis of 149 clinical strains, provided by the National Institute of Infectious Diseases (NIID), Japan, isolated in 1982-2014, after Japan became the first country to adopt acellular vaccines against B. pertussis. Additionally, we sequenced 39 strains provided by the Konan Kosei Hospital in Aichi prefecture, Japan, isolated in 2008-2013...
May 17, 2018: Microbial Genomics
https://www.readbyqxmd.com/read/29765373/compartmentalized-cyclic-amp-production-by-the-bordetella-pertussis-and-bacillus-anthracis-adenylate-cyclase-toxins-differentially-affects-the-immune-synapse-in-t-lymphocytes
#5
Vijay B Arumugham, Cristina Ulivieri, Anna Onnis, Francesca Finetti, Fiorella Tonello, Daniel Ladant, Cosima T Baldari
A central feature of the immune synapse (IS) is the tight compartmentalization of membrane receptors and signaling mediators that is functional for its ability to coordinate T cell activation. Second messengers centrally implicated in this process, such as Ca2+ and diacyl glycerol, also undergo compartmentalization at the IS. Current evidence suggests a more complex scenario for cyclic AMP (cAMP), which acts both as positive and as negative regulator of T-cell antigen receptor (TCR) signaling and which, as such, must be subjected to a tight spatiotemporal control to allow for signaling at the IS...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29751196/the-significance-role-of-regulatory-t-cells-in-the-persistence-of-infections-by-intracellular-bacteria
#6
REVIEW
Parisa Sabbagh, Ahmad Karkhah, Hamid Reza Nouri, Mostafa Javanian, Soheil Ebrahimpour
Regulatory T cells (Treg cells), are considered as effective immune cells playing a key role in immune response during cancers, autoimmune and infectious diseases. Regulatory T lymphocytes are divided into two main subgroups: natural Treg cells that generated during maturation in the thymus and have the suppressive activity that is critical for the establishment and maintenance of homeostasis in the body and induced Treg cells (iTreg) that are originated from naive T cells following the self-antigen recognition...
May 8, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29739922/bordetella-pertussis-isolates-vary-in-their-interactions-with-human-complement-components
#7
Charlotte Brookes, Irene Freire-Martin, Breeze Cavell, Frances Alexander, Stephen Taylor, Ruby Persaud, Norman Fry, Andrew Preston, Dimitri Diavatopoulos, Andrew Gorringe
Whooping cough is a re-emerging respiratory tract infection. It has become clear that there is a need for better understanding of protective immune responses and variation between Bordetella pertussis strains to aid the development of improved vaccines. In order to survive in the host, B. pertussis has evolved mechanisms to evade complement-mediated killing, including the ability to bind complement-regulatory proteins. Here we evaluate the variation in interactions with the complement system among recently isolated strains...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29738814/mucosal-and-systemic-immune-responses-elicited-by-recombinant-lactococcus-lactis-expressing-a-fusion-protein-composed-of-pertussis-toxin-and-filamentous-hemagglutinin-from-bordetella-pertussis
#8
Ali Torkashvand, Fariborz Bahrami, Minoo Adib, Soheila Ajdary
We constructed a food-grade expression system harboring a F1S1 fusion protein of Bordetella pertussis to be produced in Lactococcus lactis NZ3900 as a new oral vaccine model against whooping cough, caused by B. pertussis. F1S1 was composed of N-terminally truncated S1 subunit of pertussis toxin and type I immunodominant domain of filamentous hemagglutinin which are both known as protective immunogens against pertussis. The recombinant L. lactis was administered via oral or intranasal routes to BALB/c mice and the related specific systemic and mucosal immune responses were then evaluated...
May 5, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29738264/the-prevalence-of-pcr-confirmed-pertussis-cases-in-palestine-from-archived-nasopharyngeal-samples
#9
Kamal Dumaidi, Amer Al-Jawabreh
BACKGROUND: Pertussis caused by Bordetella pertussis is a vaccine-preventable disease causing whooping cough in humans of all ages. This study reports infection rate of pertussis in Palestine between the years 2004-2008 from archived nasopharyngeal samples collected from clinically- suspected cases. METHODS: A convenience archived DNA samples collected from 267 clinically-suspected pertussis cases were investigated for B. pertussis. Laboratory diagnosis was done by examining all DNA samples using polymerase chain reaction (PCR)...
May 1, 2018: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/29728062/robust-sub-nanomolar-library-preparation-for-high-throughput-next-generation-sequencing
#10
Wells W Wu, Je-Nie Phue, Chun-Ting Lee, Changyi Lin, Lai Xu, Rong Wang, Yaqin Zhang, Rong-Fong Shen
BACKGROUND: Current library preparation protocols for Illumina HiSeq and MiSeq DNA sequencers require ≥2 nM initial library for subsequent loading of denatured cDNA onto flow cells. Such amounts are not always attainable from samples having a relatively low DNA or RNA input; or those for which a limited number of PCR amplification cycles is preferred (less PCR bias and/or more even coverage). A well-tested sub-nanomolar library preparation protocol for Illumina sequencers has however not been reported...
May 4, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29723951/pharmacological-cyclophilin-inhibitors-prevent-intoxication-of-mammalian-cells-with-bordetella-pertussis-toxin
#11
Katharina Ernst, Nina Eberhardt, Ann-Katrin Mittler, Michael Sonnabend, Anna Anastasia, Simon Freisinger, Cordelia Schiene-Fischer, Miroslav Malešević, Holger Barth
The Bordetella pertussis toxin (PT) is one important virulence factor causing the severe childhood disease whooping cough which still accounted for approximately 63,000 deaths worldwide in children in 2013. PT consists of PTS1, the enzymatically active (A) subunit and a non-covalently linked pentameric binding/transport (B) subunit. After endocytosis, PT takes a retrograde route to the endoplasmic reticulum (ER), where PTS1 is released into the cytosol. In the cytosol, PTS1 ADP-ribosylates inhibitory alpha subunits of trimeric GTP-binding proteins (Giα) leading to increased cAMP levels and disturbed signalling...
May 1, 2018: Toxins
https://www.readbyqxmd.com/read/29716967/-bordetella-pertussis-pertussis
#12
Heather L Daniels, Camille Sabella
No abstract text is available yet for this article.
May 2018: Pediatrics in Review
https://www.readbyqxmd.com/read/29703836/-bordetella-bronchiseptica-pneumonia-beware-of-the-dog
#13
Jamie Clements, Christopher McGrath, Charlie McAllister
We report the case of a 35-year-old quadriplegic male with confirmed Bordetella bronchiseptica pneumonia, manifesting with acute hypoxic respiratory failure on a background of chronic hypercarbia requiring mechanical ventilation in intensive care. B. bronchiseptica are known to colonise the upper respiratory tracts of many mammals but are very rarely responsible for acute respiratory tract infections in humans.A review of the literature suggests preponderance for immunocompromised or immunoincompetent patients who have experienced environmental exposure to colonised animals...
April 27, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29703037/fatal-malignant-pertussis-with-hyperleukocytosis-in-a-chinese-infant-a-case-report-and-literature-review
#14
Shu-Feng Tian, Hong-Mei Wang, Ji-Kui Deng
RATIONALE: Pertussis has re-emerged on a global scale and is an ongoing public health problem, even in countries with high rates of vaccination. Hyperleukocytosis [white blood cell (WBC) count >100 × 10/L] is a rare complication that strongly predicts mortality in cases of severe pertussis. PATIENT CONCERNS: We report a case of severe pertussis in an infant who initially presented with persistent cyanotic cough, tachypnea, and grunting. The infant's condition deteriorated rapidly, and she was transferred to the pediatric intensive care unit (PICU) during her third hour of hospitalization...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29693570/pharmacists-attitudes-and-practices-regarding-tetanus-diphtheria-and-pertussis-tdap-vaccination-in-pregnancy-and-surrounding-newborns
#15
Christine A Echtenkamp, Stacie J Lampkin, Amany K Hassan
BACKGROUND: Bordetella pertussis or whooping cough is a serious and vaccine-preventable illness. Despite widespread vaccination in the pediatric population, pertussis still infects approximately 100,000 infants each year in the United States. The purpose of this study was to determine gaps in pharmacists’ understanding, attitudes, practices, and barriers surrounding the tetanus, diphtheria, and pertussis (Tdap) vaccination recommendation for patients who are pregnant or planning to come in close contact with infants...
April 25, 2018: Pharmacy (Basel, Switzerland)
https://www.readbyqxmd.com/read/29689428/a-prospective-multinational-serosurveillance-study-of-bordetella-pertussis-infection-among-10-18-years-old-asian-children-and-adolescents
#16
Sohee Son, Visanu Thamlikitkul, Kulkanya Chokephaibulkit, Jennifer Perera, Kushlani Jayatilleke, Po-Ren Hsueh, Chun-Yi Lu, Veeraraghavan Balaji, Hiroyuki Moriuchi, Yumiko Nakashima, Min Lu, Yonghong Yang, Kaihu Yao, So Hyun Kim, Jae Hoon Song, Seonwoo Kim, Min-Ji Kim, Ulrich Heininger, Cheng-Hsun Chiu, Yae-Jean Kim
OBJECTIVE: Bordetella pertussis continues to cause outbreaks worldwide. To assess the role of children and adolescent in transmission of pertussis in Asia, we performed a multinational serosurveillance study. METHODS: From July 2013 to June 2016, individuals aged 10-18 years who had not received any pertussis-containing vaccine within the prior year were recruited in 10 centers in Asia. Serum anti-pertussis toxin (PT) IgG was measured by ELISA. Demographic data and medical histories were obtained...
April 21, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29684093/pgab-orthologues-contain-a-glycoside-hydrolase-domain-that-cleaves-deacetylated-poly-%C3%AE-1-6-n-acetylglucosamine-and-can-disrupt-bacterial-biofilms
#17
Dustin J Little, Roland Pfoh, François Le Mauff, Natalie C Bamford, Christina Notte, Perrin Baker, Manita Guragain, Howard Robinson, Gerald B Pier, Mark Nitz, Rajendar Deora, Donald C Sheppard, P Lynne Howell
Poly-β(1,6)-N-acetyl-D-glucosamine (PNAG) is a major biofilm component of many pathogenic bacteria. The production, modification, and export of PNAG in Escherichia coli and Bordetella species require the protein products encoded by the pgaABCD operon. PgaB is a two-domain periplasmic protein that contains an N-terminal deacetylase domain and a C-terminal PNAG binding domain that is critical for export. However, the exact function of the PgaB C-terminal domain remains unclear. Herein, we show that the C-terminal domains of Bordetella bronchiseptica PgaB (PgaBBb) and E...
April 23, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29683387/primary-transcriptome-analysis-reveals-importance-of-is-elements-for-the-shaping-of-the-transcriptional-landscape-of-bordetella-pertussis
#18
Fabian Amman, Alexandre D'Halluin, Rudy Antoine, Ludovic Huot, Ilona Bibova, Kristina Keidel, Stéphanie Slupek, Peggy Bouquet, Loïc Coutte, Ségolène Caboche, Camille Locht, Branislav Vecerek, David Hot
Bordetella pertussis is the causative agent of whooping cough, a respiratory disease still considered as a major public health threat and for which recent re-emergence has been observed. Constant reshuffling of Bordetella pertussis genome organization was observed during evolution. These rearrangements are essentially mediated by Insertion Sequences (IS), a mobile genetic elements present in more than 230 copies in the genome, which are supposed to be one of the driving forces enabling the pathogen to escape from vaccine-induced immunity...
April 23, 2018: RNA Biology
https://www.readbyqxmd.com/read/29672738/evaluation-of-propolis-extract-as-a-disinfectant-of-japanese-quail-coturnix-coturnix-japonica-hatching-eggs
#19
Justyna Batkowska, Karrar I A Al-Shammari, Wlazlo Lukasz, Bozena Nowakowicz-Debek, Magdalena Gryzinska
This study was carried out to evaluate the effectiveness of an alcoholic propolis extract (15%) as a disinfectant for Japanese quail (Coturnix coturnix japonica) hatching eggs. A total of 600 eggs were randomly divided into four experimental groups: 1) negative control (NC), without disinfection, 2) control (C), fumigated with formaldehyde gas, 3) (A), sprayed with 96% alcohol, and 4) (P), sprayed with 15% alcoholic propolis extract. The eggs were incubated artificially in a BIOS hatching apparatus under standard conditions...
April 17, 2018: Poultry Science
https://www.readbyqxmd.com/read/29667925/massive-over-representation-of-solute-binding-proteins-sbps-from-the-tripartite-tricarboxylate-transporter-ttt-family-in-the-genome-of-the-%C3%AE-proteobacterium-rhodoplanes-sp-z2-yc6860
#20
Leonardo T Rosa, Vicki Springthorpe, Matheus E Bianconi, Gavin H Thomas, David J Kelly
Lineage-specific expansion (LSE) of protein families is a widespread phenomenon in many eukaryotic genomes, but is generally more limited in bacterial genomes. Here, we report the presence of 434 genes encoding solute-binding proteins (SBPs) from the tripartite tricarboxylate transporter (TTT) family, within the 8.2 Mb genome of the α-proteobacterium Rhodoplanes sp. Z2-YC6860, a gene family over-representation of unprecedented abundance in prokaryotes. Representing over 6 % of the total number of coding sequences, the SBP genes are distributed across the whole genome but are found rarely in low-GC islands, where the gene density for this family is much lower...
April 18, 2018: Microbial Genomics
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