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https://www.readbyqxmd.com/read/28441004/insights-into-the-mechanisms-by-which-clostridial-neurotoxins-discriminate-between-gangliosides
#1
Joshua R Burns, Gregory S Lambert, Michael R Baldwin
Botulinum neurotoxins (BoNTs) and Tetanus neurotoxin (TeNT) are the causative agents of the paralytic diseases botulism and tetanus, respectively. Entry of toxins into neurons is mediated through initial interactions with gangliosides, followed by binding to a protein co-receptor. Herein we aimed to understand the mechanism through which individual neurotoxins recognize the carbohydrate motif of gangliosides. Using cell-based and in vitro binding assays, in conjunction with structure-driven site directed mutagenesis, a conserved hydrophobic residue within the BoNTs that contributes to both affinity and specificity towards Sia5-containing gangliosides was identified...
April 25, 2017: Biochemistry
https://www.readbyqxmd.com/read/28438448/should-we-use-the-tetanus-quick-stick-in-the-emergency-department
#2
Je Hyeok Oh
No abstract text is available yet for this article.
April 21, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28433705/maternal-immunisation-collaborating-with-mother-nature
#3
REVIEW
Arnaud Marchant, Manish Sadarangani, Mathieu Garand, Nicolas Dauby, Valerie Verhasselt, Lenore Pereira, Gordean Bjornson, Christine E Jones, Scott A Halperin, Kathryn M Edwards, Paul Heath, Peter J Openshaw, David W Scheifele, Tobias R Kollmann
Maternal immunisation has the potential to substantially reduce morbidity and mortality from infectious diseases after birth. The success of tetanus, influenza, and pertussis immunisation during pregnancy has led to consideration of additional maternal immunisation strategies to prevent group B streptococcus and respiratory syncytial virus infections, among others. However, many gaps in knowledge regarding the immunobiology of maternal immunisation prevent the optimal design and application of this successful public health intervention...
April 19, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28433704/pertussis-and-influenza-immunisation-during-pregnancy-a-landscape-review
#4
REVIEW
Bahaa Abu Raya, Kathryn M Edwards, David W Scheifele, Scott A Halperin
Immunisation during pregnancy is a relatively new strategy, and is currently limited to tetanus, pertussis, and influenza vaccines. None of these vaccines were developed specifically for use in pregnancy, but they provide an effective method of protecting mothers and young infants. In response to increases in pertussis morbidity and mortality among young infants, several countries have recommended universal tetanus, diphtheria, and acellular pertussis immunisation during pregnancy. Similarly, many countries recommend influenza immunisation during pregnancy to reduce the risk of disease for mother and infant...
April 19, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28431124/childhood-vaccinations-and-risk-of-acute-lymphoblastic-leukaemia-in-children
#5
Signe Holst Søegaard, Klaus Rostgaard, Kjeld Schmiegelow, Mads Kamper-Jørgensen, Marie Hargreave, Henrik Hjalgrim, Anders Hviid
Background: It has been proposed that childhood vaccinations protect against acute lymphoblastic leukaemia (ALL) in children by modulation of future responses to common infections in childhood. However, the available studies provide inconsistent findings, and population-based cohort studies with longitudinal information on vaccinations are lacking. Methods: In a register-based cohort of all children born in Denmark from 1 January 1990 to 31 December 2008, followed up until age 15 years or 31 December 2009 ( n  = 1 225 404), we evaluated exposure to childhood vaccination and risk of childhood ALL, including information on ALL subtypes...
April 19, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28430750/elevated-immune-response-among-children-4-years-of-age-with-pronounced-local-adverse-events-after-the-fifth-dtap-vaccination
#6
Saskia van der Lee, Jeanet M Kemmeren, Lia G H de Rond, Kemal Öztürk, Anneke Westerhof, Hester E de Melker, Elisabeth A M Sanders, Guy A M Berbers, Nicoline A T van der Maas, Hans C Rümke, Anne-Marie Buisman
BACKGROUND: In the Netherlands, acellular pertussis vaccines replaced the more reactogenic whole-cell pertussis vaccines. This replacement in the primary immunization schedule of infants coincided with a significant increase in pronounced local adverse events (AEs) in 4 years old children shortly after the administration of a fifth diphtheria, tetanus, acellular pertussis and inactivated polio (DTaP-IPV) vaccine. The objective of this study was to investigate possible differences in vaccine antigen-specific immune responses between children with and without a pronounced local AE after the fifth DTaP-IPV vaccination...
April 19, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28430538/biophysical-comparison-of-diphtheria-and-tetanus-toxins-with-the-formaldehyde-detoxified-toxoids-the-main-components-of-diphtheria-and-tetanus-vaccines
#7
Husam Alsarraf, Emil Dedic, Morten J Bjerrum, Ole Østergaard, Max Per Kristensen, Jesper W Petersen, René Jørgensen
No abstract text is available yet for this article.
April 21, 2017: Virulence
https://www.readbyqxmd.com/read/28429891/comparison-of-immunization-rates-of-adults-ages-65-years-and-older-managed-within-two-nurse-practitioner-owned-clinics-with-national-immunization-rates
#8
Wendy L Wright, Elise Morrell, Jennie Lee, Norma Graciela Cuellar, Patricia White
BACKGROUND AND PURPOSE: Adults ages ≥65 years are at increased risk for infectious diseases. Ensuring these individuals are fully vaccinated is imperative. The purpose of this study was to assess the immunization rates of adults ages ≥65 years managed by nurse practitioners (NPs) and compare the results with national immunization rates and Healthy People 2020 goals. METHODS: A convenience sample of adults ages ≥65 years was obtained from two NP-managed clinics...
April 21, 2017: Journal of the American Association of Nurse Practitioners
https://www.readbyqxmd.com/read/28429619/addressing-parental-health-in-pediatrics-physician-perceptions-of-relevance-and-responsibility
#9
Maya Venkataramani, Tina L Cheng, Barry S Solomon, Craig Evan Pollack
Pediatric guidelines recommend that providers address a range of parental health issues; however, adherence to these guidelines has been suboptimal. Drawing on a nationally-representative sample of children's primary care physicians, we examined whether providers view parental issues as relevant to child health and whether they believe it is their personal responsibility to address them. Issues included maternal depression, tobacco use, intimate partner violence, Tdap (tetanus, diphtheria, and acellular pertussis) immunization, family planning, and health insurance...
April 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28429116/dutch-national-immunization-schedule-compliance-and-associated-characteristics-for-the-primary-series
#10
Elsemieke D Scheepers, Alies van Lier, Ingrid H Drijfhout, Guy Berbers, Nicoline A T van der Maas, Hester E de Melker, Mirjam J Knol
In the Netherlands, the recommended priming immunization schedule for diphtheria, tetanus, pertussis and polio (DTaP-IPV) is at 2, 3 and 4 months of age. We evaluated the compliance with the recommended schedule, as well as its characteristics. We included all infants born between 2007 and 2012 who received minimally one DTaP-IPV vaccination (n = 1,061,578). Infants complied with the schedule if they received the first vaccination between 6 and 9 weeks of age, and the second and third vaccination 2-6 weeks after the first and second vaccination...
April 20, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28427847/tetanus-vaccines-who-position-paper-february-2017-recommendations
#11
(no author information available yet)
This article presents the World Health Organization's (WHO) recommendations on the use of tetanus toxoid (TT) vaccines excerpted from the WHO position paper on tetanus vaccines - February 2017, published in the Weekly Epidemiological Record [1]. This position paper replaces the May 2006 WHO position paper on tetanus vaccines (Tetanus vaccines: WHO position paper, 2006). The position paper summarizes the recent developments in the field of tetanus prevention and provides revised guidance on the optimal timing of recommended tetanus vaccine booster doses...
April 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28411163/development-of-a-multi-epitope-peptide-vaccine-inducing-robust-t-cell-responses-against-brucellosis-using-immunoinformatics-based-approaches
#12
Mahdiye Saadi, Ahmad Karkhah, Hamid Reza Nouri
Current investigations have demonstrated that a multi-epitope peptide vaccine targeting multiple antigens could be considered as an ideal approach for prevention and treatment of brucellosis. According to the latest findings, the most effective immunogenic antigens of brucella to induce immune responses are included Omp31, BP26, BLS, DnaK and L7-L12. Therefore, in the present study, an in silico approach was used to design a novel multi-epitope vaccine to elicit a desirable immune response against brucellosis...
April 11, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28410154/current-status-of-a-unique-vaccine-preventing-pregnancy
#13
Gursaran P Talwar, Kripa N Nand, Jagdish C Gupta, Atmaram H Bandivdekar, Radhey S Sharma, Nirmal Kumar Lohiya
The ability of a vaccine linking beta hCG to a carrier to generate antibodies against hCG, its reversibility and safety was established by Phase I clinical trials conducted in India, Finland, Sweden, Chile and Brazil. Employing a hetero-species dimer (beta hCG-αoLH) linked to tetanus toxoid further improved the immunogenicity of the vaccine. Phase II clinical trials showed that anti-hCG titres above 50 ng/ml prevented pregnancy of sexually active fertile women without derangement of ovulation and menstrual regularity...
June 1, 2017: Frontiers in Bioscience (Elite Edition)
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
#14
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/28402808/eliminating-maternal-and-neonatal-tetanus-and-closing-the-immunity-gap
#15
Craig Burgess, Francois Gasse, Robert Steinglass, Ahmadu Yakubu, Azhar Abid Raza, Kari Johansen
No abstract text is available yet for this article.
April 8, 2017: Lancet
https://www.readbyqxmd.com/read/28399054/pneumococcal-immune-response-in-infants-whose-mothers-received-tdap-vaccination-during-pregnancy
#16
Kirsten Maertens, Polly Burbidge, Pierre Van Damme, David Goldblatt, Elke Leuridan
BACKGROUND: Maternal immunization with a tetanus, diphtheria and acellular pertussis (Tdap) vaccine may blunt infant pneumococcal immune responses after a primary series of vaccines. METHODS: As part of a prospective controlled cohort trial of Tdap (Boostrix®, GSK Biologicals) vaccination in pregnancy, infants born to vaccinated mothers and controls were immunized at 8 and 16 weeks and 12 months of age with 13-valent pneumococcal conjugate vaccine (Prevenar13®, Pfizer)...
April 10, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28398678/maternal-immunization
#17
Helen Y Chu, Janet A Englund
Pregnant women, neonates, and infants are at higher risk for severe infections due to vaccine-preventable diseases. Very young infants rarely respond well to vaccination due to poor immunogenicity and interference from maternal antibody. Maternal immunization protects the mother and fetus from disease and protects the infant through transplacental antibody transfer through the first 6 months of life. Currently, immunizations routinely recommended during pregnancy include inactivated influenza, tetanus toxoid, and acellular pertussis vaccines...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28397465/variation-of-housekeeping-genes-in-clinical-isolates-and-vaccine-strains-of-bordetella-pertussis
#18
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
https://www.readbyqxmd.com/read/28392142/memory-b-cell-response-to-a-pcv-13-booster-in-3-5year-old-children-primed-with-either-pcv-7-or-pcv-13
#19
Johannes Trück, Amber Thompson, Begonia Morales-Aza, Elizabeth A Clutterbuck, Merryn Voysey, Ed Clarke, Matthew D Snape, Dominic F Kelly, Adam Finn, Andrew J Pollard
Pneumococcal protein-polysaccharide conjugate vaccines provide direct protection against Streptococcus pneumoniae through the induction of persistent anti-polysaccharide antibodies, and by priming for a rapid secondary antibody response. Memory B cells (BMEM) generated during an initial immune response are responsible for both the more rapid and quantitatively greater secondary antibody response and are also thought to contribute to the ongoing production of plasma cells providing long-term antibody persistence...
May 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28391591/syrian-hamster-neuroplasticity-mechanisms-fail-as-temperature-declines-to-15%C3%A2-%C3%A2-c-but-histaminergic-neuromodulation-persists
#20
Jock S Hamilton, Sat M Chau, Kevin J Malins, Giancarlo G Ibanez, John M Horowitz, Barbara A Horwitz
Previous research suggests that hippocampal neurons in mammalian hibernators shift their major function from memory formation at euthermic brain temperatures (T b = ~37 °C) to modulation of hibernation bout duration as T b decreases. This role of hippocampal neurons during torpor is based in part on in vivo studies showing that histamine (HA) infused into ground squirrel hippocampi lengthened torpor bouts by ~50%. However, it was unclear if HA acted directly on hippocampal neurons or on downstream brain regions via HA spillover into lateral ventricles...
April 9, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
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