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Pertussis

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https://www.readbyqxmd.com/read/28101779/randomized-controlled-trial-of-topical-emla-and-vapocoolant-spray-for-reducing-pain-during-wdpt-vaccination
#1
Navratan Kumar Gupta, Amit Upadhyay, Ajeet Kumar Dwivedi, Astha Agarwal, Vijay Jaiswal, Abhishek Singh
BACKGROUND: Intramuscular vaccination is among the most common source of iatrogenic pain in infants. Vapocoolant sprays are rapid-acting alternative to topical anesthetics. They provide transient anesthesia via evaporation induced skin cooling, and reduce pain due to vaccine injection in children and adults. The objective was to compare the synergistic analgesic effect of eutectic mixture of local anesthetics (EMLA) with breastfeeding (EB group) and vapocoolant spay with breastfeeding (VB group) to that of only breastfeeding (BO group) during whole cell diptheria, pertussis and tetanus (wDPT) vaccination...
January 19, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28100502/rack1-regulates-angiotensin-ii-induced-contractions-of-shr-preglomerular-vascular-smooth-muscle-cells
#2
Xiao Zhu, Edwin K Jackson
The preglomerular microcirculation of spontaneously hypertensive rats (SHR) is hypersensitive to angiotensin II, and studies show that this is likely due to enhanced convergent signaling between G-protein subunits αq (Gαq; released by angiotensin II) and G-protein subunits βγ (Gβγ; released by Gi-coupled receptors) to active phospholipase C (PLC). Here we investigated the molecular basis for the enhanced convergent signaling between Gβγ and Gαq in SHR preglomerular vascular smooth muscle cells (PGVSMCs)...
January 18, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28097085/interaction-with-adenylate-cyclase-toxin-from-bordetella-pertussis-affects-the-metal-binding-properties-of-calmodulin
#3
Tzvia I Springer, Corey C Emerson, Christian W Johns, Natosha L Finley
Adenylate cyclase toxin domain (CyaA-ACD) is a calmodulin (CaM)-dependent adenylate cyclase involved in Bordetella pertussis pathogenesis. Calcium (Ca(2+)) and magnesium (Mg(2+)) concentrations impact CaM-dependent CyaA-ACD activation, but the structural mechanisms remain unclear. In this study, NMR, dynamic light scattering, and native PAGE were used to probe Mg(2+)-induced transitions in CaM's conformation in the presence of CyaA-ACD. Mg(2+) binding was localized to sites I and II, while sites III and IV remained Ca(2+) loaded when CaM was bound to CyaA-ACD...
January 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28095485/bordetella-parapertussis-circumvents-neutrophil-extracellular-bactericidal-mechanisms
#4
Juan Gorgojo, Emilia Scharrig, Ricardo M Gómez, Eric T Harvill, Maria Eugenia Rodríguez
B. parapertussis is a whooping cough etiological agent with the ability to evade the immune response induced by pertussis vaccines. We previously demonstrated that in the absence of opsonic antibodies B. parapertussis hampers phagocytosis by neutrophils and macrophages and, when phagocytosed, blocks intracellular killing by interfering with phagolysosomal fusion. But neutrophils can kill and/or immobilize extracellular bacteria through non-phagocytic mechanisms such as degranulation and neutrophil extracellular traps (NETs)...
2017: PloS One
https://www.readbyqxmd.com/read/28094831/barnvaccinationsprogrammet-%C3%A2-effektivt-men-otillr%C3%A3-ckligt-erfarenheter-fr%C3%A3-n-astrid-lindgrens-barnsjukhus-2008%C3%A2-2013
#5
Åsa Laestadius, Anna Nilsson, Rutger Bennet, Gordana Bogdanovic, Margareta Eriksson
The national Swedish immunisation programme includes vaccine against diphtheria, tetanus, polio, pertussis, Haemophilus influenzae type B, Pneumococcus as well as measles, mumps and rubella. Data were collected on hospital admissions for children 0- 17 years of age of vaccine-preventable diseases during 2008-2013 at Astrid Lindgren Children's Hospital, Stockholm. Patients were identified by discharge diagnosis codes as well as from the clinical microbiology laboratory. There were rare cases of measles and mumps, and only a few cases of invasive bacterial diseases...
January 16, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28093690/knowledge-attitudes-and-perceptions-about-routine-childhood-vaccinations-among-jewish-ultra-orthodox-mothers-residing-in-communities-with-low-vaccination-coverage-in-the-jerusalem-district
#6
Chen Stein Zamir, Avi Israeli
Background and aims Childhood vaccinations are an important component of primary prevention. Maternal and Child Health (MCH) clinics in Israel provide routine vaccinations without charge. Several vaccine-preventable-diseases outbreaks (measles, mumps) emerged in Jerusalem in the past decade. We aimed to study attitudes and knowledge on vaccinations among mothers, in communities with low immunization coverage. Methods A qualitative study including focus groups and semi-structured interviews. Results Low immunization coverage was defined below the district's mean (age 2 years, 2013) for measles-mumps-rubella-varicella 1st dose (MMR1\MMRV1) and diphtheria-tetanus-pertussis 4th dose (DTaP4), 96 and 89%, respectively...
January 16, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28091579/impact-of-age-and-vaccination-history-on-long-term-serological-responses-after-symptomatic-b-pertussis-infection-a-high-dimensional-data-analysis
#7
Inonge van Twillert, Axel A Bonačić Marinović, Betsy Kuipers, Jacqueline A M van Gaans-van den Brink, Elisabeth A M Sanders, Cécile A C M van Els
Capturing the complexity and waning patterns of co-occurring immunoglobulin (Ig) responses after clinical B. pertussis infection may help understand how the human host gradually loses protection against whooping cough. We applied bi-exponential modelling to characterise and compare B. pertussis specific serological dynamics in a comprehensive database of IgG, IgG subclass and IgA responses to Ptx, FHA, Prn, Fim2/3 and OMV antigens of (ex-) symptomatic pertussis cases across all age groups. The decay model revealed that antigen type and age group were major factors determining differences in levels and kinetics of Ig (sub) classes...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091337/assessing-the-social-and-environmental-determinants-of-pertussis-epidemics-in-queensland-australia-a-bayesian-spatio-temporal-analysis
#8
X Huang, S Lambert, C Lau, R J Soares Magalhaes, J Marquess, M Rajmokan, G Milinovich, W Hu
Pertussis epidemics have displayed substantial spatial heterogeneity in countries with high socioeconomic conditions and high vaccine coverage. This study aims to investigate the relationship between pertussis risk and socio-environmental factors on the spatio-temporal variation underlying pertussis infection. We obtained daily case numbers of pertussis notifications from Queensland Health, Australia by postal area, for the period January 2006 to December 2012. A Bayesian spatio-temporal model was used to quantify the relationship between monthly pertussis incidence and socio-environmental factors...
January 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28089363/pertussis-toxin-targets-the-innate-immunity-through-dap12-fcr%C3%AE-and-myd88-adaptor-proteins
#9
Vongsavanh Phongsisay, Ei'ichi Iizasa, Hiromitsu Hara, Hiroki Yoshida
Activation of the innate immunity by adjuvants, such as pertussis toxin (PTX), in the presence of autoreactive lymphocytes and antigen mimicry is sufficient to trigger autoimmunity. Toll-like, C-type lectin, and immunglobulin-like receptors play an important role in the innate immunity by sensing a variety of microbial products through several adaptor proteins, including MyD88, DAP12, and FcRγ. This study investigated the interaction between PTX and innate immune components. The direct interactions between coated PTX and receptor-fusion proteins were examined using ELISA-based binding assays...
December 30, 2016: Immunobiology
https://www.readbyqxmd.com/read/28088399/the-timing-of-pertussis-cases-in-unvaccinated-children-in-an-outbreak-year-oregon-2012
#10
Steve G Robison, Juventila Liko
OBJECTIVE: To assess whether, during a 2012 pertussis outbreak, unvaccinated and poorly vaccinated cases occurred earlier on a community level. STUDY DESIGN: Pediatric pertussis among children 2 months to 10 years of age in the Oregon Sentinel Surveillance region during an epidemic starting at the beginning of 2012 were stratified by immunization status, age, zip code, and calendar date of disease onset. Differences in median onset as days between fully or mostly vaccinated, poorly vaccinated, and unvaccinated cases were examined overall and within local zip code areas...
January 11, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28080049/modeling-diversity-in-structures-of-bacterial-outer-membrane-lipids
#11
Huilin Ma, Daniel D Cummins, Natalie Brooke Edelstein, Jerry Gomez, Aliza Khan, Masud Dikita Llewellyn, Tara Picudella, Sarah Rose Willsey, Shikha Nangia
Lipopolysaccharides are vital components of the outer membrane of gram-negative bacteria, and they act as extremely strong stimulators of innate immunity in diverse eukaryotic species. The primary immunostimulatory center of the LPS molecule is lipid A-a disaccharide-bound lipophilic domain. Considering the broad diversity in bacterial species, there are variations in the lipid A structure and their immunogenic potency. In this work, we model the lipid A structures of eight commensal or human pathogenic bacterial species: Helicobacter pylori, Porphyromonas gingivalis, Bacteroides fragilis, Bordetella pertussis, Chlamydia trachomatis, Campylobacter jejuni, Neisseria meningitidis, and Salmonella minnesota...
January 12, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28079006/a-new-vaccine-delivery-vehicle-and-adjuvant-candidate-bordetella-pertussis-inactivated-whole-cells-entrapped-in-alginate-microspheres
#12
Naser Mohammadpour Dounighi, Fereshteh Shahcheraghi, Mehdi Razzaghi-Abyaneh, Mojtaba Nofeli, Hossein Zolfagharian
There is no doubt about whole cell pertussis vaccine efficacy, but it is necessary to improve the vaccine quality specially to decreasing its toxicity by obtaining good immunogenicity with low bacteria number content. In this work, under optimum condition inactivated B. pertussis bacteria cells entrapped alginate microparticles were fabricated and in vivo immunogenicity and potency of new microparticle based vaccine evaluated in mice. Microspheres loaded inactive B. pertussis bacterium cells were prepared via an emulsification method and analyzed for morphology, size, polydispersity index, loading efficiency, loading capacity, release profile and in vivo potency...
January 12, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28076445/emerging-bordetella-pertussis-strains-induce-enhanced-signaling-of-human-pattern-recognition-receptors-tlr2-nod2-and-secretion-of-il-10-by-dendritic-cells
#13
Elise S Hovingh, Marjolein van Gent, Hendrik-Jan Hamstra, Marc Demkes, Frits R Mooi, Elena Pinelli
Vaccines against pertussis have been available for more than 60 years. Nonetheless, this highly contagious disease is reemerging even in countries with high vaccination coverage. Genetic changes of Bordetella pertussis over time have been suggested to contribute to the resurgence of pertussis, as these changes may favor escape from vaccine-induced immunity. Nonetheless, studies on the effects of these bacterial changes on the immune response are limited. Here, we characterize innate immune recognition and activation by a collection of genetically diverse B...
2017: PloS One
https://www.readbyqxmd.com/read/28073985/population-based-pertussis-incidence-and-risk-factors-in-infants-less-than-6-months-in-nepal
#14
Michelle M Hughes, Janet A Englund, Jane Kuypers, James M Tielsch, Subarna K Khatry, Laxman Shrestha, Steven C LeClerq, Mark Steinhoff, Joanne Katz
BACKGROUND: Pertussis is estimated to cause 2 percent of childhood deaths globally and is a growing public health problem in developed countries despite high vaccination coverage. Infants are at greatest risk of morbidity and mortality. Maternal vaccination during pregnancy may be effective to prevent pertussis in young infants, but population-based estimates of disease burden in infants are lacking, particularly in low-income countries. The objective of this study was to estimate the incidence of pertussis in infants less than 6 months of age in Sarlahi District, Nepal...
January 10, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28072958/-investigation-on-immunization-program-coverage-rate-and-its-safety-in-children-with-tuberous-sclerosis
#15
Y Gao, L P Zou, M N Zhang, L Y Pang, Y Y Wang, S F Ma, L L Huang
Objective: To investigate the status of immunization of National Immunization Program (NIP) and its adverse reaction rate in children with tuberous sclerosis. Method: Questionnaire survey was adopted to identify the vaccination coverage and its adverse events; 72 cases of children with tuberous sclerosis and 78 normal controls (healthy children completing age-appropriate NIP) admitted to Chinese People's Liberation Army General Hospital from December 2014 to November 2015 were involved into this study. Result: The age-appropriate NIP coverage rate of tuberous sclerosis was 36%(26/72)...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28069828/lpa1-receptor-mediated-thromboxane-a2-release-is-responsible-for-lysophosphatidic-acid-induced-vascular-smooth-muscle-contraction
#16
Péter Tibor Dancs, Éva Ruisanchez, Andrea Balogh, Cecília Rita Panta, Zsuzsanna Miklós, Rolf M Nüsing, Junken Aoki, Jerold Chun, Stefan Offermanns, Gábor Tigyi, Zoltán Benyó
Lysophosphatidic acid (LPA) has been recognized recently as an endothelium-dependent vasodilator, but several lines of evidence indicate that it may also stimulate vascular smooth muscle cells (VSMCs), thereby contributing to vasoregulation and remodeling. In the present study, mRNA expression of all 6 LPA receptor genes was detected in murine aortic VSMCs, with the highest levels of LPA1, LPA2, LPA4, and LPA6 In endothelium-denuded thoracic aorta (TA) and abdominal aorta (AA) segments, 1-oleoyl-LPA and the LPA1-3 agonist VPC31143 induced dose-dependent vasoconstriction...
January 9, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28067718/immunogenicity-and-safety-of-a-booster-injection-of-dtap-ipv-hib-pentaxim%C3%A2-administered-concomitantly-with-tetravalent-dengue-vaccine-in-healthy-toddlers-aged-15-to-18-months-in-mexico-a-randomized-trial
#17
Flor Irene Rodriguez Melo, José Juan Renteria Morales, Abiel Homero Mascareñas De Los Santos, Enrique Rivas, Claire Vigne, Fernando Noriega
BACKGROUND: The live, attenuated, tetravalent dengue vaccine (CYD-TDV) is licensed in a number of dengue endemic countries for individuals ≥9 years old. Before integration of any vaccine into childhood vaccination schedules, a lack of immune interference and acceptable safety when co-administered with other recommended vaccines should be demonstrated. METHODS: This randomized, multi-center, Phase III trial was conducted in Mexico. Healthy toddlers (n=732) received a booster dose of a licensed pentavalent combination vaccine (diphtheria, tetanus, acellular pertussis, inactivated polio vaccine, and Haemophilus influenzae type b [DTaP-IPV//Hib]) either concomitantly or sequentially with the second dose of CYD-TDV administered as a 3-dose schedule...
January 6, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28067717/risk-of-pertussis-in-relation-to-degree-of-prematurity-in-children-2-years-of-age
#18
Øystein Rolandsen Riise, Ida Laake, Didrik Vestrheim, Elmira Flem, Dag Moster, Marianne Adeleide Riise Bergsaker, Jann Storsæter
BACKGROUND: A few previous studies reported increased risk of pertussis in children with birth weight < 2500g. The risk of pertussis by degree of prematurity has not been determined in a cohort study. The vaccine effectiveness (VE) against reported pertussis in preterm infants is unknown. METHODS: Data were obtained from the Medical Birth Registry of Norway (1998-2010) and linked to other national registries. In total, 713,166 children were included in our study and followed until 2 years of age...
January 6, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28065204/risk-factors-for-pertussis-in-adults-and-teenagers-in-england
#19
A Wensley, G J Hughes, H Campbell, G Amirthalingam, N Andrews, N Young, L Coole
Pertussis is a vaccine-preventable respiratory infection caused by Bordetella pertussis which can be fatal in infants. Although high vaccine coverage led to prolonged disease control in England, a national outbreak of pertussis in 2011 led to the largest increase in over two decades, including a marked increase in cases aged ⩾15 years. A case-control study in four regions of England was undertaken to investigate risk factors for pertussis in adolescents and adults, specifically employment type and professional and household contact with children...
January 9, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28063725/despite-awareness-of-recommendations-why-do-health-care-workers-not-immunize-pregnant-women
#20
Anat Gesser-Edelsburg, Yaffa Shir-Raz, Samah Hayek, Sharon Aassaraf, Lior Lowenstein
Studies indicate uncertainty surrounding vaccination safety and efficacy for pregnant women, causing a central problem for health authorities. In this study, approximately 26% of participants do not recommend the tetanus, diphtheria, and acellular pertussis and influenza vaccines to their patients, although being aware of the health ministry recommendations. We found significant statistical discrepancies between the knowledge about the recommendations and their actual implementation, revealing the concerns of health care workers regarding vaccine safety...
January 4, 2017: American Journal of Infection Control
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