keyword
MENU ▼
Read by QxMD icon Read
search

Neutralizing antibodies

keyword
https://www.readbyqxmd.com/read/28723925/immunologic-response-to-vaccine-challenge-in-pregnant-ptpn22-r620w-carriers-and-non-carriers
#1
Shelly H Tien, Juliet N Crabtree, Heather L Gray, Erik J Peterson
OBJECTIVES: Influenza infection is a significant cause of respiratory morbidity among pregnant women. Seasonal influenza vaccination engages innate immune receptors to promote protective immunity. A coding polymorphism (R620W) in PTPN22 imparts elevated risk for human infection and autoimmune disease, predisposes to diminished innate immune responses, and associates with reduced immunization responses. We sought to quantify the effects of PTPN22-R620W on humoral and cell-mediated immune responses to the inactivated influenza vaccine among healthy pregnant women...
2017: PloS One
https://www.readbyqxmd.com/read/28722020/a-critical-role-of-gas6-axl-signal-in-allergic-airway-responses-during-rsv-vaccine-enhanced-disease
#2
Takehiko Shibata, Manabu Ato
Respiratory syncytial virus (RSV) is a common virus that causes lower respiratory infections across a wide range of ages. A licensed RSV vaccine is not available because vaccination with formalin-inactivated RSV (FI-RSV) and the subsequent RSV infection cause not only insufficient induction of neutralizing antibodies but also severe allergic airway responses, termed FI-RSV vaccine enhanced disease (FI-RSV VED). However, the underlying mechanism has not been identified, although a Th2-biased immune response is known to be a hallmark of this disease...
July 19, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28721397/hivis-dna-or-hivisopt-dna-priming-followed-by-cmdr-vaccinia-based-boosts-induce-both-humoral-and-cellular-murine-immune-responses-to-hiv
#3
J Hinkula, S Petkov, K Ljungberg, D Hallengärd, A Bråve, M Isaguliants, T Falkeborn, S Sharma, V Liakina, M Robb, M Eller, B Moss, G Biberfeld, E Sandström, C Nilsson, K Markland, P Blomberg, B Wahren
BACKGROUND: In order to develop a more effective prophylactic HIV-1 vaccine it is important optimize the components, improve Envelope glycoprotein immunogenicity as well as to explore prime-boost immunization schedules. It is also valuable to include several HIV-1 subtype antigens representing the world-wide epidemic. METHODS: HIVIS-DNA plasmids which include Env genes of subtypes A, B and C together with Gag subtypes A and B and RTmut/Rev of subtype B were modified as follows: the Envelope sequences were shortened, codon optimized, provided with an FT4 sequence and an immunodominant region mutated...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28720888/bivalent-dna-vaccine-induces-significant-immune-responses-against-infectious-hematopoietic-necrosis-virus-and-infectious-pancreatic-necrosis-virus-in-rainbow-trout
#4
Liming Xu, Jingzhuang Zhao, Miao Liu, Guangming Ren, Feng Jian, Jiasheng Yin, Ji Feng, Hongbai Liu, Tongyan Lu
Infectious hematopoietic necrosis virus (IHNV) and infectious pancreatic necrosis virus (IPNV) are important pathogens of salmon and trout. An active bivalent DNA vaccine was constructed with the glycoprotein gene of Chinese IHNV isolate Sn1203 and VP2-VP3 gene of Chinese IPNV isolate ChRtm213. Rainbow trout (5 g) were vaccinated by intramuscular injection with 1.0 µg of the bivalent DNA vaccine and then challenged with an intraperitoneal injection of IHNV, IPNV, or both, at 30 and 60 days post-vaccination (d...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720851/microneedle-patch-delivery-of-influenza-vaccine-during-pregnancy-enhances-maternal-immune-responses-promoting-survival-and-long-lasting-passive-immunity-to-offspring
#5
E Stein Esser, Joanna A Pulit-Penaloza, Haripriya Kalluri, Devin McAllister, Elena V Vassilieva, Elizabeth Q Littauer, Nadia Lelutiu, Mark R Prausnitz, Richard W Compans, Ioanna Skountzou
Influenza virus causes life-threatening infections in pregnant women and their newborns. Immunization during pregnancy is the most effective means of preventing maternal and infant mortality/morbidity; however, influenza vaccination rates of pregnant women remain under 50%. Furthermore, the availability of vaccines in low-resource populations is limited. Skin immunization with microneedle patches (MN) is a novel and safe vaccination platform featuring thermostable vaccine formulations. Cold-chain independence and the potential for self-administration can expand influenza vaccination coverage in developing countries...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720506/arecoline-activates-latent-transforming-growth-factor-%C3%AE-1-via-mitochondrial-reactive-oxygen-species-in-buccal-fibroblasts-suppression-by-epigallocatechin-3-gallate
#6
Yu-Ping Hsieh, King-Jean Wu, Hsin-Ming Chen, Yi-Ting Deng
BACKGROUND/PURPOSE: Oral submucous fibrosis (OSF) is a premalignant condition caused by the chewing of areca nut (AN). Transforming growth factor β (TGFβ) plays a central role in the pathogenesis of OSF. Connective tissue growth factor (CTGF or CCN2) and early growth response-1 (Egr-1) are important mediators in the fibrotic response to TGFβ in several fibrotic disorders including OSF. Arecoline, a major AN alkaloid, induced the synthesis of CCN2 and Egr-1 in human buccal mucosal fibroblast (BMFs)...
July 15, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28720468/production-of-a-chikungunya-vaccine-using-a-cho-cell-and-attenuated-viral-based-platform-technology
#7
Preethi Eldi, Tamara H Cooper, Liang Liu, Natalie A Prow, Kerrilyn R Diener, Paul M Howley, Andreas Suhrbier, John D Hayball
Vaccinia-based systems have been extensively explored for the development of recombinant vaccines. Herein we describe an innovative vaccinia virus (VACV)-derived vaccine platform technology termed Sementis Copenhagen Vector (SCV), which was rendered multiplication-defective by targeted deletion of the essential viral assembly gene D13L. A SCV cell substrate line was developed for SCV vaccine production by engineering CHO cells to express D13 and the VACV host-range factor CP77, because CHO cells are routinely used for manufacture of biologics...
July 15, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28720462/a-novel-trivalent-hpv-16-18-58-vaccine-with-anti-hpv-16-and-18-neutralizing-antibody-responses-comparable-to-those-induced-by-the-gardasil-quadrivalent-vaccine-in-rhesus-macaque-model
#8
Fei Yin, Yajun Wang, Na Chen, Dunquan Jiang, Yefeng Qiu, Yan Wang, Mei Yan, Jianping Chen, Haijiang Zhang, Yongjiang Liu
Persistent infection with human papillomavirus (HPV) is a key factor in the development of precancerous lesions and invasive cervical cancer. Prophylactic vaccines to immunize against HPV are an effective approach to reducing HPV related disease burden. In this study, we investigated the immunogenicity and dosage effect of a trivalent HPV 16/18/58 vaccine (3vHPV) produced in Escherichia coli (E.coli), with Gardasil quadrivalent vaccine (4vHPV, Merck & Co.) as a positive control. Sera collected from rhesus macaques vaccinated with three dosage formulations of 3vHPV (termed low-, mid-, and high-dosage formulations, respectively), and the 4vHPV vaccine were analyzed by both Pseudovirus-Based Neutralization Assay (PBNA) and Enzyme-Linked Immunosorbent Assay (ELISA)...
June 2017: Papillomavirus Research
https://www.readbyqxmd.com/read/28720142/comparison-of-serological-assays-to-titrate-hantaan-and-seoul-hantavirus-specific-antibodies
#9
Weihong Li, Shouchun Cao, Quanfu Zhang, Jiandong Li, Shuo Zhang, Wei Wu, Jing Qu, Chuan Li, Mifang Liang, Dexin Li
BACKGROUND: Hantaan and Seoul viruses, in the Hantavirus genus, are known to cause hemorrhagic fever with renal syndrome (HFRS). The plaque reduction neutralization test (PRNT), as conventional neutralization test for hantaviruses, is laborious and time-consuming. Alternatives to PRNT for hantaviruses are required. METHODS: In this study, the methods for Hantaan and Seoul viruses serological typing including microneutralization test (MNT), pseudoparticle neutralization test (PPNT) and immunofluorescence assay based on viral glycoproteins (IFA-GP) were developed and compared with PRNT using a panel of 74 sera including 44 convalescent sera of laboratory confirmed HFRS patients and 30 patients sera of non-hantavirus infection...
July 18, 2017: Virology Journal
https://www.readbyqxmd.com/read/28719950/isolation-and-characterization-of-vaccine-candidate-genes-including-csp-and-msp1-in-plasmodium-yoelii
#10
Seon-Hee Kim, Young-An Bae, Ju-Young Seoh, Hyun-Jong Yang
Malaria is an infectious disease affecting humans, which is transmitted by the bite of Anopheles mosquitoes harboring sporozoites of parasitic protozoans belonging to the genus Plasmodium. Despite past achievements to control the protozoan disease, malaria still remains a significant health threat up to now. In this study, we cloned and characterized the full-unit Plasmodium yoelii genes encoding merozoite surface protein 1 (MSP1), circumsporozoite protein (CSP), and Duffy-binding protein (DBP), each of which can be applied for investigations to obtain potent protective vaccines in the rodent malaria model, due to their specific expression patterns during the parasite life cycle...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28719632/viscum-album-neutralizes-tumor-induced-immunosuppression-in-a-human-in-vitro-cell-model
#11
Carmen Steinborn, Amy Marisa Klemd, Ann-Sophie Sanchez-Campillo, Sophie Rieger, Marieke Scheffen, Barbara Sauer, Manuel Garcia-Käufer, Konrad Urech, Marie Follo, Annekathrin Ücker, Gunver Sophia Kienle, Roman Huber, Carsten Gründemann
Tumor cells have the capacity to secrete immunosuppressive substances in order to diminish dendritic cell (DC) activity and thereby escape from immune responses. The impact of mistletoe (Viscum album) extracts (VAE), which are frequently used as an additive anti-cancer therapy to stimulate the immune response, is still unknown. Using a human cellular system, the impact of two different VAE (VAEA + VAEI) on the maturation of human dendritic cells and on T cell function has been investigated using flow cytometry, automated fluorescence microscopy and cytokine bead array assays...
2017: PloS One
https://www.readbyqxmd.com/read/28719027/marker-of-coxsackievirus-b4-infection-in-saliva-of-patients-with-type-1-diabetes
#12
F Badia-Boungou, F Sane, E K Alidjinou, M Ternois, P A Opoko, J Haddad, C Stukens, C Lefevre, I Gueorguieva, M Hamze, M Ismail, J Weill, H G Monabéka, E Bouenizabila, D Moukassa, A A Abena, D Hober
BACKGROUND: Coxsackieviruses B (CV-B) are enteroviruses that have been reported to play a role in the pathogenesis of type 1 diabetes. Enteroviral RNA was detected in the gut mucosa of patients. The mucosal immunity is an interconnected network, therefore the response to enteroviruses possibly present in the gastrointestinal mucosa can be reflected by specific antibodies in the saliva. In the present study the anti-CV-B neutralizing activity of saliva samples from patients with type 1 diabetes was investigated...
July 18, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28718923/using-homology-modeling-to-interrogate-binding-affinity-in-neutralization-of-ricin-toxin-by-a-family-of-single-domain-antibodies
#13
Andrea Bazzoli, David J Vance, Michael J Rudolph, Yinghui Rong, Siva Krishna Angalakurthi, Ronald T Toth, C Russell Middaugh, David B Volkin, David D Weis, John Karanicolas, Nicholas J Mantis
In this report we investigated, within a group of closely related single domain camelid antibodies (VH Hs), the relationship between binding affinity and neutralizing activity as it pertains to ricin, a fast-acting toxin and biothreat agent. The V1C7-like VH Hs (V1C7, V2B9, V2E8, and V5C1) are similar in amino acid sequence, but differ in their binding affinities and toxin-neutralizing activities. Using the X-ray crystal structure of V1C7 in complex with ricin's enzymatic subunit (RTA) as a template, Rosetta-based homology modeling coupled with energetic decomposition led us to predict that a single pairwise interaction between Arg29 on V5C1 and Glu67 on RTA was responsible for the difference in ricin toxin binding affinity between V1C7, a weak neutralizer, and V5C1, a moderate neutralizer...
July 18, 2017: Proteins
https://www.readbyqxmd.com/read/28718891/mk-reduces-inhaled-chlorine-triggered-ahr-and-airway-inflammation-in-the-mouse
#14
Yoichiro Hamamoto, Satoshi Ano, Benoit Allard, Michael O'Sullivan, Toby K McGovern, James G Martin
BACKGROUND AND PURPOSE: Cysteinyl leukotrienes (CysLTs) are pro-inflammatory lipid mediators that exacerbate disease state in several asthma phenotypes including asthma induced by allergen, virus and exercise. However, the role of CysLTs in irritant-induced airway disease is not well characterized. The purpose of the current study was to investigate the effect of montelukast (MK), a CysLT1R antagonist, on parameters of irritant-induced asthma (IIA) induced by inhalation of chlorine (Cl2 ) in the mouse...
July 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28716893/which-dengue-vaccine-approach-is-the-most-promising-and-should-we-be-concerned-about-enhanced-disease-after-vaccination-there-is-only-one-true-winner
#15
Scott B Halstead
The scientific community now possesses information obtained directly from human beings that makes it possible to understand why breakthrough-enhanced dengue virus (DENV) infections occurred in children receiving Sanofi Pasteur's Dengvaxia tetravalent live attenuated vaccine and to predict the possibility of breakthrough-enhanced DENV infections following immunization with two other tetravalent live attenuated vaccines now in phase III testing. Based upon recent research, Dengvaxia, lacking DENV nonstructural protein antigens, did not protect seronegatives because it failed to raise a competent T-cell response and/or antibodies to NS1...
July 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28716884/which-dengue-vaccine-approach-is-the-most-promising-and-should-we-be-concerned-about-enhanced-disease-after-vaccination-the-challenges-of-a-dengue-vaccine
#16
Gavin Screaton, Juthathip Mongkolsapaya
A dengue vaccine has been pursued for more than 50 years and, unlike other flaviviral vaccines such as that against yellow fever, progress has been slow. In this review, we describe progress toward the first licensed dengue vaccine Dengvaxia, which does not give complete protection against disease. The antibody response to the dengue virion is reviewed, highlighting immunodominant yet poorly neutralizing responses in the context of a highly dynamic structurally flexible dengue virus particle. Finally, we review recent evidence for cross-reactivity between antibody responses to Zika and dengue viruses, which may further complicate the development of broadly protective dengue virus vaccines...
July 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28716554/calcium-phosphate-nanoparticle-capnp-for-dose-sparing-of-inactivated-whole-virus-pandemic-influenza-a-h1n1-2009-vaccine-in-mice
#17
Tülin Morçӧl, Brett L Hurst, E Bart Tarbet
The emergence of pandemic influenza strains, particularly the reemergence of the swine-derived influenza A (H1N1) in 2009, is reaffirmation that influenza viruses are very adaptable and influenza remains as a significant global public health treat. As recommended by the World Health Organization (WHO), the use of adjuvants is an attractive approach to improve vaccine efficacy and allow dose-sparing during an influenza emergency. In this study, we utilized CaPtivate Pharmaceutical's proprietary calcium phosphate nanoparticles (CaPNP) vaccine adjuvant and delivery platform to formulate an inactivated whole virus influenza A/CA/04/2009 (H1N1pdm) vaccine as a potential dose-sparing strategy...
July 14, 2017: Vaccine
https://www.readbyqxmd.com/read/28713576/seroprevalence-and-risk-factor-analysis-for-exposure-to-equine-encephalosis-virus-in-israel-palestine-and-jordan
#18
Sharon Tirosh-Levy, Boris Gelman, Doni Zivotofsky, Lara Quraan, Evgeny Khinich, Abdelmajeed Nasereddin, Ziad Abdeen, Amir Steinman
Equine encephalosis virus (EEV) is an orbivirus transmitted by Culicoides species. Most infected horses show mild clinical signs and mortality is usually very low. EEV is closely related and similarly transmitted to other, more pathogenic and economically important, orbiviruses such as African horse sickness virus (AHSV), bluetongue virus (BTV) and epizootic haemorrhagic disease viruses (EHDV), and may serve as an indicator for possible transmission of the latter. Israel has been reported to be endemic for EEV since 2001...
May 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/28713388/exploiting-natural-cross-reactivity-between-human-immunodeficiency-virus-hiv-1-p17-protein-and-anti-gp41-2f5-antibody-to-induce-hiv-1-neutralizing-responses-in-vivo
#19
Bernard Verrier, Stéphane Paul, Céline Terrat, Liza Bastide, Agathe Ensinas, Capucine Phelip, Blandine Chanut, Laura Bulens-Grassigny, Fabienne Jospin, Christophe Guillon
Anti-p17 antibodies are able to neutralize human immunodeficiency virus (HIV) entry in a mouse model. In this study, we identified a region of sequence similarity between the epitopes of anti-p17 neutralizing antibodies and anti-gp41 neutralizing 2F5 antibody and verified cross-reactivity between p17 and 2F5 in vitro. The p17 sequence was modified to increase sequence identity between the p17 and 2F5 epitopes, which resulted in enhanced cross-reactivity in vitro. Immunogenicity of wild-type and modified p17 was characterized in a rabbit model...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28713371/regulation-of-subunit-specific-germinal-center-b-cell-responses-to-the-hiv-1-envelope-glycoproteins-by-antibody-mediated-feedback
#20
Mattias N E Forsell, Linda Kvastad, Saikiran K Sedimbi, John Andersson, Mikael C I Karlsson
The regulation of germinal center (GC) B cell responses to single epitopes is well investigated. How monoclonal B cells are regulated within the polyclonal B cell response to protein antigens is less so. Here, we investigate the primary GC B cell response after injection of mice with HIV-1 envelope glycoproteins. We demonstrate that single GCs are seeded by a diverse number of B cell clones shortly after a single immunization and that the presence of Env-specific antibodies can inhibit the development of early GC B cells...
2017: Frontiers in Immunology
keyword
keyword
52519
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"