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https://www.readbyqxmd.com/read/28938449/tsh-igf-1-receptor-cross-talk-rapidly-activates-extracellular-signal-regulated-kinases-in-multiple-cell-types
#1
Christine C Krieger, Joseph D Perry, Sarah J Morgan, George J Kahaly, Marvin C Gershengorn
We previously showed that TSH/IGF-1 receptor cross-talk appears to be involved in Graves' orbitopathy (GO) pathogenesis and up-regulation of thyroid-specific genes in human thyrocytes. In orbital fibroblasts from GO patients (GOFs), co-administration of TSH and IGF-1 induces synergistic increases in hyaluronan secretion. In human thyrocytes, TSH plus IGF-1 synergistically increased expression of sodium-iodide symporter that appeared to involve ERK1/2 activation. However, the details of ERK1/2 activation were not known nor whether ERK1/2 was involved in this synergism in other cell types...
August 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28934133/understanding-the-mechanism-of-translocation-of-adenylate-cyclase-toxin-across-biological-membranes
#2
REVIEW
Helena Ostolaza, César Martín, David González-Bullón, Kepa B Uribe, Asier Etxaniz
Adenylate cyclase toxin (ACT) is one of the principal virulence factors secreted by the whooping cough causative bacterium Bordetella pertussis, and it has a critical role in colonization of the respiratory tract and establishment of the disease. ACT targets phagocytes via binding to the CD11b/CD18 integrin and delivers its N-terminal adenylate cyclase (AC) domain directly to the cell cytosol, where it catalyzes unregulated conversion of cytosolic ATP into cAMP upon activation by binding to cellular calmodulin...
September 21, 2017: Toxins
https://www.readbyqxmd.com/read/28934122/invasion-of-dendritic-cells-macrophages-and-neutrophils-by-the-bordetella-adenylate-cyclase-toxin-a-subversive-move-to-fool-host-immunity
#3
REVIEW
Giorgio Fedele, Ilaria Schiavoni, Irena Adkins, Nela Klimova, Peter Sebo
Adenylate cyclase toxin (CyaA) is released in the course of B. pertussis infection in the host's respiratory tract in order to suppress its early innate and subsequent adaptive immune defense. CD11b-expressing dendritic cells (DC), macrophages and neutrophils are professional phagocytes and key players of the innate immune system that provide a first line of defense against invading pathogens. Recent findings revealed the capacity of B. pertussis CyaA to intoxicate DC with high concentrations of 3',5'-cyclic adenosine monophosphate (cAMP), which ultimately skews the host immune response towards the expansion of Th17 cells and regulatory T cells...
September 21, 2017: Toxins
https://www.readbyqxmd.com/read/28932228/pertussis-maternal-immunization-narrowing-the-knowledge-gaps-on-the-duration-of-transferred-protective-immunity-and-on-vaccination-frequency
#4
María Emilia Gaillard, Daniela Bottero, María Eugenia Zurita, Francisco Carriquiriborde, Pablo Martin Aispuro, Erika Bartel, David Sabater-Martínez, María Sol Bravo, Celina Castuma, Daniela Flavia Hozbor
Maternal safety through pertussis vaccination and subsequent maternal-fetal-antibody transfer are well documented, but information on infant protection from pertussis by such antibodies and by subsequent vaccinations is scarce. Since mice are used extensively for maternal-vaccination studies, we adopted that model to narrow those gaps in our understanding of maternal pertussis immunization. Accordingly, we vaccinated female mice with commercial acellular pertussis (aP) vaccine and measured offspring protection against Bordetella pertussis challenge and specific-antibody levels with or without revaccination...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28930529/a-protocol-for-investigating-the-association-of-vaccination-and-anti-nmda-receptor-encephalitis
#5
Hsiuying Wang
Anti-N-methyl-D-aspartate (Anti-NMDA) receptor encephalitis is an acute autoimmune neurological disorder that can be triggered by virus, H1N1/tetanus/diphtheria/pertussis and polio vaccines or by presence of a tumor. The association between anti-NMDA receptor encephalitis and Japanese encephalitis vaccination was examined and a general protocol of phylogenetic method which details the steps and code and an example of its utility is provided. The approach used here is potentially useful for analyzing the relationship between vaccines and diseases...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28930286/molecular-and-cellular-signatures-underlying-superior-immunity-against-bordetella-pertussis-upon-pulmonary-vaccination
#6
R Hm Raeven, J Brummelman, J LA Pennings, L van der Maas, K Helm, W Tilstra, A van der Ark, A Sloots, P van der Ley, W van Eden, W Jiskoot, E van Riet, C Acm van Els, G Fa Kersten, W Gh Han, B Metz
Mucosal immunity is often required for protection against respiratory pathogens but the underlying cellular and molecular mechanisms of induction remain poorly understood. Here, systems vaccinology was used to identify immune signatures after pulmonary or subcutaneous immunization of mice with pertussis outer membrane vesicles. Pulmonary immunization led to improved protection, exclusively induced mucosal immunoglobulin A (IgA) and T helper type 17 (Th17) responses, and in addition evoked elevated systemic immunoglobulin G (IgG) antibody levels, IgG-producing plasma cells, memory B cells, and Th17 cells...
September 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28928960/the-relationship-between-mucosal-immunity-nasopharyngeal-carriage-asymptomatic-transmission-and-the-resurgence-of-bordetella-pertussis
#7
REVIEW
Christopher Gill, Pejman Rohani, Donald M Thea
The incidence of whooping cough in the US has been rising slowly since the 1970s, but the pace of this has accelerated sharply since acellular pertussis vaccines replaced the earlier whole cell vaccines in the late 1990s. A similar trend occurred in many other countries, including the UK, Canada, Australia, Ireland, and Spain, following the switch to acellular vaccines. The key question is why. Two leading theories (short duration of protective immunologic persistence and evolutionary shifts in the pathogen to evade the vaccine) explain some but not all of these shifts, suggesting that other factors may also be important...
2017: F1000Research
https://www.readbyqxmd.com/read/28926974/block-v-rtx-domain-of-adenylate-cyclase-from-bordetella-pertussis-a-conformationally-dynamic-scaffold-for-protein-engineering-applications
#8
REVIEW
Beyza Bulutoglu, Scott Banta
The isolated Block V repeats-in-toxin (RTX) peptide domain of adenylate cyclase (CyaA) from Bordetella pertussis reversibly folds into a β-roll secondary structure upon calcium binding. In this review, we discuss how the conformationally dynamic nature of the peptide is being engineered and employed as a switching mechanism to mediate different protein functions and protein-protein interactions. The peptide has been used as a scaffold for diverse applications including: a precipitation tag for bioseparations, a cross-linking domain for protein hydrogel formation and as an alternative scaffold for biomolecular recognition applications...
September 17, 2017: Toxins
https://www.readbyqxmd.com/read/28923422/a-novel-measles-outbreak-control-strategy-in-the-netherlands-in-2013-2014-using-a-national-electronic-immunization-register-a-study-of-early-mmr-uptake-and-its-determinants
#9
Laura M Nic Lochlainn, Tom Woudenberg, Alies van Lier, Irmgard Zonnenberg, Marvin Philippi, Hester E de Melker, Susan J M Hahné
BACKGROUND: During a large measles outbreak in the Netherlands in 2013-2014, infants aged 6-14months living in municipalities with low (<90%) measles-mumps-rubella (MMR) coverage were individually invited for an early MMR using the national electronic immunization register, Præventis. We estimated uptake of early MMR prior to and during the 2013-2014 outbreak and assessed determinants for early MMR vaccination. METHODS: We obtained vaccination records from Præventis, and defined early MMR as vaccination before 415days (13months) of age...
September 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28922318/vaccination-during-pregnancy-first-line-of-defense-for-expecting-mothers-and-vulnerable-young-infants
#10
Casidhe-Nicole Bethancourt, Tiffany L Wang, Joseph A Bocchini
PURPOSE OF REVIEW: Maternal vaccination is a well-tolerated and effective way to protect mothers, their developing fetuses, and their young infants from infectious diseases. Although influenza vaccine and diphtheria, tetanus, and acellular pertussis (Tdap) vaccine are recommended for all pregnant women, uptake rates in the United States remain low. This review will focus on the rationale, scientific evidence, and perceptions of vaccination during pregnancy. RECENT FINDINGS: Recent studies show that administration of influenza and Tdap vaccines during pregnancy is well tolerated and provides protection to the pregnant woman, her fetus, and young infant...
September 16, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28918379/infanrix-hexa-and-sudden-death-a-review-of-the-periodic-safety-update-reports-submitted-to-the-european-medicines-agency
#11
Jacob Puliyel, C Sathyamala
There have been a number of spontaneous reports of sudden unexpected death soon after the administration of Infanrix hexa (combined diphtheria, tetanus, acellular pertussis, hepatitis B, inactivated poliomyelitis and Haemophilus influenza type B vaccine). The manufacturer, GlaxoSmithKline (GSK), submits confidential periodic safety update reports (PSURs) on Infanrix hexa to the European Medicines Agency (EMA). The latest is the PSUR 19. Each PSUR contains an analysis of observed/expected sudden deaths, which shows that the number of observed deaths soon after immunisation is lower than that expected by chance...
September 5, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/28916245/tetanus-diphtheria-and-acellular-pertussis-vaccination-during-pregnancy-and-reduced-risk-of-infant-acute-respiratory-infections
#12
Zeina G Khodr, Anna T Bukowinski, Gia R Gumbs, Ava Marie S Conlin
BACKGROUND: To protect infants from pertussis infection, the Advisory Committee on Immunization Practices (ACIP) recommends women receive the tetanus toxoid, reduced diphtheria toxoid, acellular pertussis (Tdap) vaccine between 27 and 36weeks of pregnancy. Here, we assessed the association between timing of maternal Tdap vaccination during pregnancy and acute respiratory infection (ARI) in infants <2months of age. METHODS: This retrospective cohort study included 99,434 infants born to active duty military women in the Department of Defense Birth and Infant Health Registry from 2006 through 2013...
September 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28915813/the-relationship-between-burden-of-childhood-disease-and-foreign-aid-for-child-health
#13
J Clay Bavinger, Paul Wise, Eran Bendavid
BACKGROUND: We sought to examine the relationship between child specific health aid (CHA) and burden of disease. Based on existing evidence, we hypothesized that foreign aid for child health would not be proportional to burden of disease. METHODS: In order to examine CHA and burden of disease, we obtained estimates of these parameters from established sources. Estimates of disability adjusted life years (DALYs) in children (0-5 years) were obtained from the World Health Organization for 2000 and 2012...
September 15, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28912323/complete-genome-sequences-of-bordetella-pertussis-isolates-with-novel-pertactin-deficient-deletions
#14
Michael R Weigand, Yanhui Peng, Pamela K Cassiday, Vladimir N Loparev, Taccara Johnson, Phalasy Juieng, Elizabeth J Nazarian, Keeley Weening, M Lucia Tondella, Margaret M Williams
Clinical isolates of the respiratory pathogen Bordetella pertussis in the United States have become predominantly deficient for the acellular vaccine immunogen pertactin through various independent mutations. Here, we report the complete genome sequences for four B. pertussis isolates that harbor novel deletions responsible for pertactin deficiency.
September 14, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28912160/dopamine-d2-receptors-modulate-pyramidal-neurons-in-mouse-medial-prefrontal-cortex-through-a-stimulatory-g-protein-pathway
#15
Sarah E Robinson, Vikaas S Sohal
Dopaminergic modulation of prefrontal cortex is believed to play key roles in many cognitive functions and to be disrupted in pathological conditions such as schizophrenia. We have previously described a phenomenon whereby dopamine D2 receptor (D2R) activation elicits afterdepolarizations (ADPs) in subcortically-projecting (SC) pyramidal neurons within L5 of the prefrontal cortex. These D2R-induced ADPs only occur following synaptic input which activates NMDA receptors (NMDARs) even when the delay between the synaptic input and afterdepolarizations is relatively long, e...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28906022/identification-and-characterization-of-a-brilliant-yellow-pigment-produced-by-bordetella-pertussis
#16
Keita Odanaka, Masato Iwatsuki, Tomomitsu Satho, Mineo Watanabe
Culture supernatant of Bordetella pertussis has a brilliant yellow color; however, the structure and biological role of the pigment have not been investigated. We extracted the brilliant yellow-colored fraction from the culture supernatant of B. pertussis and analyzed it by HPLC. UV-visible spectral analysis and mass spectrometry identified the brilliant yellow pigment as riboflavin. Riboflavin production was high in lag and early log phases and riboflavin enhanced the growth of B. pertussis in low-density cultures...
September 14, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28904864/a-g-protein-coupled-%C3%AE-7-nicotinic-receptor-regulates-signaling-and-tnf-%C3%AE-release-in-microglia
#17
Justin R King, Trudy C Gillevet, Nadine Kabbani
Acetylcholine activation of α7 nicotinic acetylcholine receptors (α7 nAChRs) in microglia attenuates neuroinflammation and regulates TNF-α release. We used lipopolysaccharide to model inflammation in the microglial cell line EOC20 and examined signaling by the α7 nAChR. Co-immunoprecipitation experiments confirm that α7 nAChRs bind heterotrimeric G proteins in EOC20 cells. Interaction with Gαi mediates α7 nAChR signaling via enhanced intracellular calcium release and a decrease in cAMP, p38 phosphorylation, and TNF-α release...
September 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28900351/an-overview-of-different-health-indicators-used-in-the-european-health-systems
#18
REVIEW
M Gaeta, F Campanella, L Capasso, G M Schifino, L Gentile, G Banfi, G Pelissero, C Ricci
INTRODUCTION: In the European Union three different health systems could be defined according to service delivery, financing, and economic policies: Beveridge, Bismarck and Mixed system. Although health systems are hardly to compare, various organizations are developing methods assessing performance. In the present work the performance of the three systems were evaluated using European Community Health Indicators according to Organization for Economic Cooperation and Development. METHODS: The study has been conducted among the 28 states of the European Union using the following indicators: Standardized death rate for diseases of the circulatory system, standardized death rate of malignant neoplasms, road traffic accidents with injury, life expectancy at birth, incidence of Human Immunodeficiency Virus (HIV), infant deaths, pure alcohol consumption, infants vaccinated against Diphtheria Tetanus Pertussis (DTP), public and total expenditure on health over the period 2001-2010...
June 2017: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/28893915/hyperbiofilm-formation-by-bordetella-pertussis-strains-correlates-with-enhanced-virulence-traits
#19
Natalia Cattelan, Jamie Jennings-Gee, Purnima Dubey, Osvaldo M Yantorno, Rajendar Deora
Pertussis or whooping cough caused by the obligate human pathogen Bordetella pertussis is undergoing a world-wide resurgence. Majority of studies with this pathogen are conducted with laboratory-adapted strains which may not be representative of the species as a whole. Biofilm formation by B. pertussis plays an important role in its pathogenesis. We conducted a side-by side comparison of the biofilm forming ability of the prototype laboratory strains with currently circulating isolates from two countries with different vaccination programs...
September 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28893741/prevention-and-assessment-of-infectious-diseases-among-children-and-adult-migrants-arriving-to-the-european-union-european-economic-association-a-protocol-for-a-suite-of-systematic-reviews-for-public-health-and-health-systems
#20
Kevin Pottie, Alain D Mayhew, Rachael L Morton, Christina Greenaway, Elie A Akl, Prinon Rahman, Dominik Zenner, Manish Pareek, Peter Tugwell, Vivian Welch, Joerg Meerpohl, Pablo Alonso-Coello, Charles Hui, Beverley-Ann Biggs, Ana Requena-Méndez, Eric Agbata, Teymur Noori, Holger J Schünemann
INTRODUCTION: The European Centre for Disease Prevention and Control is developing evidence-based guidance for voluntary screening, treatment and vaccine prevention of infectious diseases for newly arriving migrants to the European Union/European Economic Area. The objective of this systematic review protocol is to guide the identification, appraisal and synthesis of the best available evidence on prevention and assessment of the following priority infectious diseases: tuberculosis, HIV, hepatitis B, hepatitis C, measles, mumps, rubella, diphtheria, tetanus, pertussis, poliomyelitis (polio), Haemophilus influenza disease, strongyloidiasis and schistosomiasis...
September 11, 2017: BMJ Open
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