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Rotavirus immune response

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https://www.readbyqxmd.com/read/28077655/expression-of-ifnlr1-on-intestinal-epithelial-cells-is-critical-to-the-antiviral-effects-of-ifn-lambda-against-norovirus-and-reovirus
#1
Megan T Baldridge, Sanghyun Lee, Judy J Brown, Nicole McAllister, Kelly Urbanek, Terence S Dermody, Timothy J Nice, Herbert W Virgin
: Interferon-lambda (IFN-λ) has potent antiviral effects against multiple enteric viral pathogens, including norovirus and rotavirus, in both preventing and curing infection. Because the intestine includes a diverse array of cell types, however, the cell(s) upon which IFN-λ acts to exert its antiviral effects are unclear. Here, we sought to identify IFN-λ responsive cells by generation of mice with lineage-specific deletion of the receptor for IFN-λ, Ifnlr1 We found that expression of IFNLR1 on intestinal epithelial cells (IECs) in the small intestine and colon is required for enteric IFN-λ antiviral activity...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28059609/rotavirus-specific-maternal-antibodies-and-immune-response-to-rv3-bb-neonatal-rotavirus-vaccine-in-new-zealand
#2
Mee-Yew Chen, Carl D Kirkwood, Julie Bines, Daniel Cowley, Daniel Pavlic, Katherine J Lee, Francesca Orsini, Emma Watts, Graeme Barnes, Margaret Danchin
Background Maternal antibodies, acquired passively via placenta and/or breast milk, may contribute to the reduced efficacy of oral rotavirus vaccine observed in children in developing countries. This study aimed to investigate the effect of rotavirus specific maternal antibodies on the serum IgA response or stool excretion of vaccine virus after any dose of an oral rotavirus vaccine, RV3-BB, in parallel to a Phase IIa clinical trial conducted at Dunedin Hospital, New Zealand. At the time of the study rotavirus vaccines had not been introduced in New Zealand and the burden of rotavirus disease was evident...
January 6, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28042704/development-of-an-in-vitro-immunobiotic-evaluation-system-against-rotavirus-infection-in-bovine-intestinal-epitheliocytes
#3
H Kobayashi, P Kanmani, T Ishizuka, A Miyazaki, J Soma, L Albarracin, Y Suda, T Nochi, H Aso, N Iwabuchi, J-Z Xiao, T Saito, J Villena, H Kitazawa
The bovine intestinal epithelial cell line (BIE cells) expresses the Toll-like receptor (TLR)3 and is able to mount an antiviral immune response after the stimulation with poly(I:C). In the present study, we aimed to further characterise the antiviral defence mechanisms in BIE cells by evaluating the innate immune response triggered by rotavirus (RV) infection. In addition, we attempted to determine whether immunobiotic bifidobacteria are able to confer protection of BIE cells against RV infection by beneficially modulating the antiviral immune response...
January 2, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/27994593/intestinal-innate-antiviral-immunity-and-immunobiotics-beneficial-effects-against-rotavirus-infection
#4
REVIEW
Julio Villena, Maria Guadalupe Vizoso-Pinto, Haruki Kitazawa
The mucosal tissues of the gastrointestinal tract are the main portal entry of pathogens such as rotavirus (RV), which is a leading cause of death due to diarrhea among young children across the globe and a major cause of severe acute intestinal infection in livestock animals. The interactions between intestinal epithelial cells (IECs) and immune cells with RVs have been studied for several years, and now, it is known that the innate immune responses triggered by this virus can have both beneficial and detrimental effects for the host...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27977553/the-association-between-fecal-biomarkers-of-environmental-enteropathy-and-rotavirus-vaccine-response-in-nicaraguan-infants
#5
Sylvia Becker-Dreps, Samuel Vilchez, Filemon Bucardo, Erica Twitchell, Wan Suk Choi, Michael G Hudgens, Johan Perez, Lijuan Yuan
BACKGROUND: Environmental enteropathy (EE) is a common intestinal condition among children living in low and middle income countries and is associated with diminished enteric immunity to gastrointestinal pathogens, and possibly, to oral vaccine antigens. The goal of this study was to examine associations between biomarkers of EE and immunogenicity to the pentavalent rotavirus vaccine (RV5). METHODS: Infants were recruited one day before their first RV5 immunization in León, Nicaragua, from public health rosters...
December 12, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27939054/concomitant-administration-of-a-fully-liquid-ready-to-use-dtap-ipv-hb-prp-t-hexavalent-vaccine-with-a-meningococcal-serogroup-c-conjugate-vaccine-in-infants
#6
Timo Vesikari, Ray Borrow, Xavier Da Costa, Patrick Richard, Cécile Eymin, Florence Boisnard, Stephen Lockhart
DTaP-IPV-HB-PRP-T or hexavalent vaccines are indicated for primary and booster vaccination of infants and toddlers against diphtheria, tetanus, pertussis, hepatitis B, poliomyelitis and invasive diseases caused by Haemophilus influenzae type b (Hib). The present study evaluates the safety and immunogenicity of a ready-to-use hexavalent vaccine when co-administered with a meningococcal serogroup C conjugate (MenC) vaccine in infants. This was a phase III, open-label, randomised, multicentre study conducted in Finland...
January 11, 2017: Vaccine
https://www.readbyqxmd.com/read/27932206/detailed-analysis-of-balb-c-mice-challenged-with-wild-type-rotavirus-edim-provide-an-alternative-for-infection-model-of-rotavirus
#7
Jialiang Du, Zhiling Lan, Yueyue Liu, Yan Liu, Yanchao Li, Xiangming Li, Tai Guo
Mouse is one of the infection animal models for rotavirus. Since the optimal age of mouse sensitive to rotavirus infection thus far has not been unified, we elucidated clinical symptoms, immune responses and pathological changes of mice in different ages after challenged by murine rotavirus wild strain EDIM (Epidemic Diarrhea of Infant Mice) to provide data for the estimation. One-week-old, two-week-old, and three-week-old BALB/c mice were inoculated with EDIM in the challenge dose of 235 ID50, 470 ID50 and 705 ID50 respectively and were compared to mock-infected controls...
January 15, 2017: Virus Research
https://www.readbyqxmd.com/read/27860553/developing-an-inactivated-rotavirus-vaccine-and-evaluating-the-immunogenicity-against-a-commercially-available-attenuated-rotavirus-vaccine-using-a-mice-animal-model
#8
Ayaa S M Hashim, Khaled M A Aboshanab, Aly F M El-Sayed
There is a high demand for public immunization against Rotavirus (RV), especially in Africa. In Africa, the attenuated RV vaccination is contraindicated in patients with immune diseases and nutrition deficiency. Therefore, the inactivated RV vaccine (IRVV) could be an alternative. In this study, we aimed to develop a pentavalent-IRVV using the most circulating RV strains in Egypt and evaluate it against the commercially available Rotarix(®) vaccine. Trial-IRVV was developed with 5% sucrose, 2% polysorbate-80, and adsorbed on Alum to potentiate the vaccine immune response...
December 2016: Viral Immunology
https://www.readbyqxmd.com/read/27859498/the-srl-peptide-of-rhesus-rotavirus-vp4-protein-governs-cholangiocyte-infection-and-the-murine-model-of-biliary-atresia
#9
Sujit K Mohanty, Bryan Donnelly, Inna Lobeck, Ashley Walther, Phylicia Dupree, Abigail Coots, Jaroslaw Meller, Monica McNeal, Karol Sestak, Greg Tiao
: Biliary atresia (BA) is a neonatal obstructive cholangiopathy which progresses to end stage liver disease, often requiring transplantation. The murine model of BA, employing rhesus rotavirus (RRV), parallels human disease and has been used to elucidate mechanistic aspects of a virus induced biliary cholangiopathy. We previously reported that RRV VP4 gene plays an integral role in activating the immune system and induction of BA. Utilizing rotavirus binding and blocking assays, this study elucidated how RRV VP4 protein governs cholangiocyte susceptibility to infection both in vitro and in vivo in the murine model of BA...
November 17, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27849227/the-impact-of-rotavirus-vaccination-on-emergency-department-visits-and-hospital-admissions-for-acute-diarrhea-in-children-under-5-years
#10
Rodrigo Locatelli Pedro Paulo, André Broggin Dutra Rodrigues, Beatriz Marcondes Machado, Alfredo Elias Gilio
Introduction: Acute diarrheal disease is the second cause of death in children under 5 years. In Brazil, from 2003 to 2009, acute diarrhea was responsible for nearly 100,000 hospital admissions per year and 4% of the deaths in children under 5 years. Rotavirus is the leading cause of severe acute diarrhea worldwide. In 2006, the rotavirus monovalent vaccine (RV1) was added to the Brazilian National Immunization Program. Objectives: To analyze the impact of the RV1 on emergency department (ED) visits and hospital admissions for acute diarrhea...
September 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27847365/contribution-of-maternal-immunity-to-decreased-rotavirus-vaccine-performance-in-low-and-middle-income-countries
#11
Katayi Mwila, Roma Chilengi, Michelo Simuyandi, Sallie R Permar, Sylvia Becker-Dreps
The role of maternal immunity received by infants either transplacentally or orally from breast milk on rotavirus vaccine (RV) performance is evaluated. Breast feeding withholding has no effect on vaccine response, but higher levels of transplacental rotavirus-specific IgG antibody contribute to reduced vaccine seroconversion. The gaps in knowledge on the factors associated with low RV efficacy in low and middle income countries (LMIC) remain and further research is needed to shed more light on these issues...
November 9, 2016: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/27846058/lot-to-lot-consistency-safety-tolerability-and-immunogenicity-of-an-investigational-hexavalent-vaccine-in-us-infants
#12
Stanley L Block, Nicola P Klein, Kwabena Sarpong, Stephen Russell, John Fling, Maria Petrecz, Sheryl Flores, Jin Xu, Guanghan Liu, Jon E Stek, Ginamarie Foglia, Andrew W Lee
BACKGROUND: This multicenter Phase III study (NCT01340937) evaluated the consistency of immune responses to 3 separate lots of DTaP5-IPV-Hib-HepB, an investigational hexavalent vaccine (HV). METHODS: Healthy infants were randomized (2:2:2:1) to receive HV or Pentacel (Control). Groups 1, 2, and 3 received HV at 2, 4, and 6 months, and Control at 15 months. Group 4 received Control at 2, 4, 6, and 15 months, plus Recombivax HB (HepB) at 2 and 6 months. Concomitant Prevnar 13 (PCV13) was given to all groups at 2, 4, 6, and 15 months; pentavalent rotavirus vaccine (RV5) was given to all groups at 2, 4, and 6 months...
November 11, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27826359/modeling-human-enteric-dysbiosis-and-rotavirus-immunity-in-gnotobiotic-pigs
#13
Erica L Twitchell, Christine Tin, Ke Wen, Husen Zhang, Sylvia Becker-Dreps, M Andrea Azcarate-Peril, Samuel Vilchez, Guohua Li, Ashwin Ramesh, Mariah Weiss, Shaohua Lei, Tammy Bui, Xingdong Yang, Stacey Schultz-Cherry, Lijuan Yuan
BACKGROUND: Rotavirus vaccines have poor efficacy in infants from low- and middle-income countries. Gut microbiota is thought to influence the immune response to oral vaccines. Thus, we developed a gnotobiotic (Gn) pig model of enteric dysbiosis to study the effects of human gut microbiota (HGM) on immune responses to rotavirus vaccination, and the effects of rotavirus challenge on the HGM by colonizing Gn pigs with healthy HGM (HHGM) or unhealthy HGM (UHGM). The UHGM was from a Nicaraguan infant with a high enteropathy score (ES) and no seroconversion following administration of oral rotavirus vaccine, while the converse was characteristic of the HHGM...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27824918/skin-vaccination-against-rotavirus-using-microneedles-proof-of-concept-in-gnotobiotic-piglets
#14
Yuhuan Wang, Anastasia Vlasova, Daniel E Velasquez, Linda J Saif, Sukumar Kandasamy, Efrat Kochba, Yotam Levin, Baoming Jiang
Live-attenuated oral rotavirus (RV) vaccines have lower efficacy in low income countries, and additionally are associated with a rare but severe adverse event, intussusception. We have been pursuing the development of an inactivated rotavirus vaccine (IRV) using the human rotavirus strain CDC-9 (G1P[8]) through parenteral immunization and previously demonstrated dose sparing and enhanced immunogenicity of intradermal (ID) unadjuvanted IRV using a coated microneedle patch in comparison with intramuscular (IM) administration in mice...
2016: PloS One
https://www.readbyqxmd.com/read/27806915/predominance-of-unusual-rotavirus-g1p-6-strain-in-north-india-an-evidence-from-hospitalized-children-and-adult-diarrheal-patients
#15
Swapnil Jain, Nutan Thakur, Jitendraa Vashistt, Neelam Grover, Triveni Krishnan, Harish Changotra
Group A Rotavirus remains the leading cause of gastroenteritis in children and accounts for 0.2 million fatalities each year; out of which, approximately 47,100 deaths occur in India. In adults also, rotavirus is reported to be responsible for diarrhea severe enough to require hospitalizations. India has recently introduced rotavirus vaccine in the Universal Immunization Programme and Himachal Pradesh became the first Indian state to implement this project. This study is an attempt to provide the pre-vaccination data on rotavirus gastroenteritis burden and circulating genotypes in Himachal Pradesh, India...
December 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27727030/immunisation-practices-in-centres-caring-for-children-with-perinatally-acquired-hiv-a-call-for-harmonisation
#16
Alasdair Bamford, Emma C Manno, Maria Jose Mellado, Vana Spoulou, Laura Marques, Henriette J Scherpbier, Tim Niehues, Agnieszka Oldakowska, Paolo Rossi, Paolo Palma
BACKGROUND: Current national immunisation schedules differ between countries in terms of vaccine formulation, timing of vaccinations and immunisation programme funding and co-ordination. As a result, some HIV infected paediatric population may be left susceptible to vaccine preventable infections. Vaccines used in healthy population should be subjected to high quality ethical research and be explicitly validated for use in children with special vaccination needs such as those infected with HIV...
October 7, 2016: Vaccine
https://www.readbyqxmd.com/read/27669156/a-cross-sectional-vaccination-coverage-study-in-preschool-children-attending-nurseries-kindergartens-implications-on-economic-crisis-effect
#17
Theano Georgakopoulou, Damianos Menegas, Antonis Katsioulis, Maria Theodoridou, Jenny Kremastinou, Christos Hadjichristodoulou
Vaccination coverage studies are important in determining a population vaccination status and strategically adjusting national immunization programs. This study assessed full and timely vaccination coverage of preschool children aged 2-3 years attending nurseries-kindergartens (N-K) nationwide at the socioeconomic crisis onset. Geographically stratified cluster sampling was implemented considering prefectures as strata and N-K as clusters. The N-K were selected by simple random sampling from the sampling frame while their number was proportional to the stratum size...
September 26, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27663670/breastfeeding-linked-to-the-reduction-of-both-rotavirus-shedding-and-iga-levels-after-rotarix%C3%A2-immunization-in-mexican-infants
#18
Aurora Bautista-Marquez, Daniel E Velasquez, Marcelino Esparza-Aguilar, Maria Luna-Cruz, Tatiana Ruiz-Moran, Ken Sugata, Baoming Jiang, Umesh Parashar, Manish Patel, Vesta Richardson
We examined potential risk factors on vaccine virus shedding and antibody seroresponse to human rotavirus vaccine (Rotarix) in Mexican infants. Two doses of Rotarix were administered to infants during the first two visits for their routine childhood immunization (∼8 and 15weeks of age) in Mexico City. Infant's characteristics and socioeconomic indicators were obtained, including history of long-term feeding practices (exclusively/predominantly breastfed and exclusively/predominantly non-breastfed). Two serum specimens were collected, one during the second rotavirus vaccine visit and one 7weeks later...
October 17, 2016: Vaccine
https://www.readbyqxmd.com/read/27662551/safety-and-immunogenicity-of-a-live-attenuated-pentavalent-rotavirus-vaccine-in-hiv-exposed-infants-with-or-without-hiv-infection-in-africa
#19
Myron J Levin, Jane C Lindsey, Susan S Kaplan, Werner Schimana, Jody Lawrence, Monica M McNeal, Mutsa Bwakura-Dangarembizi, Anthony Ogwu, Evans M Mpabalwani, Paul Sato, George Siberry, Margaret Nelson, Darcy Hille, Geoffrey A Weinberg, Adriana Weinberg
OBJECTIVE: Although many HIV-infected (HIV+) and HIV-exposed but uninfected (HEU) infants have received live rotavirus vaccines since the WHO recommended universal administration of these vaccines to infants, there has been limited prospective information on their safety and immunogenicity in either group of infants. DESIGN/METHODS: We performed a randomized, double-blinded, placebo-controlled trial of the safety and immunogenicity of oral pentavalent rotavirus vaccine (RV5) administered to HIV+ and HEU infants in four African countries...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27641439/the-dendritic-cell-t-helper-17-macrophage-axis-controls-cholangiocyte-injury-and-disease-progression-in-murine-and-human-biliary-atresia
#20
Celine S Lages, Julia Simmons, Avery Maddox, Keaton Jones, Rebekah Karns, Rachel Sheridan, Shiva Kumar Shanmukhappa, Sujit Mohanty, Matthew Kofron, Pierre Russo, Yui-Hsi Wang, Claire Chougnet, Alexander G Miethke
: Biliary atresia (BA) is a fibroinflammatory obstruction of the extrahepatic biliary tree in neonates. While intrahepatic bile duct proliferation is universal at diagnosis, bile duct paucity develops later. We hypothesized that polarized T helper lymphocyte responses orchestrate progression of intrahepatic biliary injury in this disease. Interleukin 17A (IL-17A)-green fluorescent protein, cluster of differentiation 11c (CD11c)/diphtheria toxin receptor, and IL-17 receptor A(-/-) mice were used to examine T-lymphocyte polarization, inflammatory leukocyte recruitment, and biliary injury in rhesus rotavirus-induced BA...
January 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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