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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
#1
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/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
#2
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/28719287/phase-1-randomized-study-of-a-tetravalent-dengue-purified-inactivated-vaccine-in-healthy-adults-in-the-united-states
#3
Alexander C Schmidt, Leyi Lin, Luis J Martinez, Richard C Ruck, Kenneth H Eckels, Alix Collard, Rafael De La Barrera, Kristopher M Paolino, Jean-François Toussaint, Edith Lepine, Bruce L Innis, Richard G Jarman, Stephen J Thomas
AbstractThe safety and immunogenicity of four formulations of an investigational tetravalent dengue purified inactivated vaccine (DPIV), formulated at 1 or 4 μg with aluminum hydroxide (alum) or at 1 μg with an adjuvant system (AS01E or AS03B), were evaluated in a first-time-in-human, placebo-controlled, randomized, observer-blind, phase 1 trial in the continental United States. Two doses of vaccine or placebo were administered intramuscularly 4 weeks apart to 100 healthy adults 18-39 years of age, randomized 1:1:1:1:1 to receive one of four DPIV formulations or saline placebo...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719220/egfr-targeted-cationic-polymeric-mixed-micelles-for-co-delivery-of-gemcitabine-and-mir-205-for-treating-advanced-pancreatic-cancer
#4
Goutam Mondal, Saud Almawash, Amit Kumar Chaudhary, Ram I Mahato
Gemcitabine (GEM), a first-line chemotherapy for pancreatic cancer undergoes rapid metabolism and develops chemoresistance after repeated administration. We previously demonstrated that the combination of GEM and miR-205 provides an effective therapeutic strategy to sensitize GEM-resistant pancreatic cancer cells. Since epidermal growth factor receptor (EGFR) is overexpressed in pancreatic cancer cells, in this study, we aimed to deliver mixed micelles containing GEM and miR-205 decorated with EGFR-targeting cetuximab (C225) monoclonal antibody for targeted therapy...
July 18, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28718065/structure-function-relationships-of-protein-lipopeptide-complexes-and-influence-on-immunogenicity
#5
Acep R Wijayadikusumah, Lucy C Sullivan, David C Jackson, Brendon Y Chua
The lipopeptide, R4Pam2Cys, associates electrostatically with soluble protein antigens and significantly enhances their ability to induce protective humoral and cell-mediated responses. We demonstrate that antibody titers elicited by the antigen ovalbumin (OVA) associated with R4Pam2Cys are higher than those elicited by OVA in the presence of alum and comparable to those elicited by OVA formulated with complete Freund's adjuvant (CFA). The hierarchy of anti-OVA antibody avidities was CFA > R4Pam2Cys = alum...
July 17, 2017: Amino Acids
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
#6
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/28713172/poxylation-as-an-alternative-stealth-coating-for-biomedical-applications
#7
Herdis Bludau, Anna E Czapar, Andrzej S Pitek, Sourabh Shukla, Rainer Jordan, Nicole F Steinmetz
Polyethylene glycol (PEG) polymers are currently used in a variety of medical formulations to reduce toxicity, minimize immune interactions and improve pharmacokinetics. Despite its widespread use however, the presence of anti-PEG antibodies indicates that this polymer has the potential to be immunogenic and antigenic. Here we present an alternative polymer, poly(2-oxazoline) (POx) for stealth applications, specifically shielding of a proteinaceous nanoparticle from recognition by the immune system. Tobacco mosaic virus (TMV) was used as our testbed due to its potential for use as a nanocarrier for drug delivery and molecular imaging applications...
March 2017: European Polymer Journal
https://www.readbyqxmd.com/read/28713027/an-on-matrix-digestion-procedure-for-ap-ms-experiments-dissects-the-interplay-between-complex-conserved-and-serotype-specific-reactivities-in-dengue-virus-human-plasma-interactome
#8
Yassel Ramos, Vivian Huerta, Dayron Martín, Sucel Palomares, Alexis Yero, Dianne Pupo, Sebastien Gallien, Alejandro M Martín, Yasset Pérez-Riverol, Mónica Sarría, Osmany Guirola, Glay Chinea, Bruno Domon, Luis Javier González
The interactions between the four Dengue virus (DENV) serotypes and plasma proteins are crucial in the initial steps of viral infection to humans. Affinity purification combined with quantitative mass spectrometry analysis, has become one of the most powerful tools for the investigation on novel protein-protein interactions. Using this approach, we report here that a significant number of bait-interacting proteins do not dissociate under standard elution conditions, i.e. acid pH and chaotropic agents, and that this problem can be circumvented by using the "on-matrix" digestion procedure described here...
July 13, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28712326/calcium-phosphate-nanoparticles-as-a-new-generation-vaccine-adjuvant
#9
Yahua Lin, Xin Wang, Xiaofen Huang, Jun Zhang, Ningshao Xia, Qinjian Zhao
Adjuvants are essential components in vaccine formulations to induce robust immunity against pathogens. The most widely used adjuvants in human vaccines are aluminum salts, that can effectively elicit a T helper type-2 (Th2)-biased humoral immune response for producing a high antibody titer but with a limited cellular immune response. Biocompatible calcium phosphate nanoparticles (CaP-NPs) with tunable characteristics have potentials to function as adjuvants for inducing more balanced T helper type-1 (Th1) and Th2 immune responses...
July 17, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28701762/different-repeat-annual-influenza-vaccinations-improve-the-antibody-response-to-drifted-influenza-strains
#10
Ewan P Plant, Lucy J Fredell, Blake A Hatcher, Xing Li, Meng-Jung Chiang, Martina Kosikova, Hang Xie, Olga Zoueva, Angelia A Cost, Zhiping Ye, Michael J Cooper
Seasonal influenza vaccine formulas change almost every year yet information about how this affects the antibody repertoire of vaccine recipients is inadequate. New vaccine virus strains are selected, replacing older strains to better match the currently circulating strains. But even while the vaccine is being manufactured the circulating strains can evolve. The ideal response to a seasonal vaccine would maintain antibodies toward existing strains that might continue to circulate, and to generate cross-reactive antibodies, particularly towards conserved influenza epitopes, potentially limiting infections caused by newly evolving strains...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28699823/the-gmz2-malaria-vaccine-from-concept-to-efficacy-in-humans
#11
Michael Theisen, Bright Adu, Benjamin Mordmüller, Subhash Singh
GMZ2 is a recombinant protein consisting of conserved domains of GLURP and MSP3, two asexual blood-stage antigens of Plasmodium falciparum, and is designed with the aim of mimicking naturally acquired anti-malarial immunity. The rationale for combining these two antigens is based on a series of immune epidemiological studies from geographically diverse malaria endemic regions; functional in vitro studies; and pre-clinical studies in rodents and New World monkeys. GMZ2 adjuvanted with alhydrogel® (alum) was well tolerated and immunogenic in three phase 1 studies...
July 12, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28698120/effectiveness-of-formalin-killed-vaccines-containing-cpg-oligodeoxynucleotide-1668-adjuvants-against-vibrio-harveyi-in-orange-spotted-grouper
#12
Hai Trong Nguyen, Thuy Thi Thu Nguyen, Yi-Ting Wang, Pei-Chyi Wang, Shih-Chu Chen
Vibrio harveyi is a major bacterial pathogen that causes serious vibriosis in cultured groupers, leading to massive deaths. In this study, we evaluated the immune responses and protective efficacy of vaccines containing V. harveyi formalin-killed cells (FKC) formulated with CpG ODN 1668-enriched plasmids (p30CpG and p60CpG) in the orange-spotted grouper. Results indicated that antibody titres were remarkably increased in vaccinated fish 2 weeks post-immunisation. Expression level of major histocompatibility complex (MHC) class II, CD 8, and toll-like receptor 9 was significantly upregulated in the spleen of fish immunised with CpG ODN 1668-adjuvanted vaccines, as recorded at 6 weeks after immunisation...
July 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28690199/high-concentration-protein-formulations-how-high-is-high
#13
Patrick Garidel, Alexander B Kuhn, Lars V Schäfer, Anne R Karow-Zwick, Michaela Blech
High-concentration protein formulation (HCPF) is a term that is used to describe protein formulations, mostly monoclonal antibody (mAb) drugs, at high protein concentration. The concentration is rarely defined, with typical ranges varying between 50 and 150 mg/ml for mAbs. The term HCPF is meant to include and express specific solution properties of formulations that are prone to appear at high protein concentrations such as high viscosity, high opalescence, phase separation, gel formation or the increased propensity for protein particle formation...
July 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28689435/effect-of-molecular-weight-and-ratio-of-poly-ethylene-glycols-derivatives-in-combination-with-trehalose-on-stability-of-freeze-dried-igg
#14
Amir Hossein Mohammad Zadeh, Abdolhosein Rouholamini Najafabadi, Alireza Vatanara, Homa Faghihi, Kambiz Gilani
The influence of PEG (poly ethylene glycol) at different molecular weights and ratios was studied on the stability of freeze- dried IgG (immune globulin G). PEGs (600 to 4000 Dalton) at concentrations of 0.5 and 5% W/V were applied in the presence of 40 and 60% W/W of trehalose to prepare freeze- dried IgG formulations. Size- exclusion chromatography, Infra- red spectroscopy, Differential scanning calorimetery and Gel electrophoresis were performed to characterize lyophilized samples. Pure IgG demonstrated the highest aggregation of 5...
July 10, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28688779/formulation-stabilisation-and-encapsulation-of-bacteriophage-for-phage-therapy
#15
REVIEW
Danish J Malik, Ilya J Sokolov, Gurinder K Vinner, Francesco Mancuso, Salvatore Cinquerrui, Goran T Vladisavljevic, Martha R J Clokie, Natalie J Garton, Andrew G F Stapley, Anna Kirpichnikova
Against a backdrop of global antibiotic resistance and increasing awareness of the importance of the human microbiota, there has been resurgent interest in the potential use of bacteriophages for therapeutic purposes, known as phage therapy. A number of phage therapy phase I and II clinical trials have concluded, and shown phages don't present significant adverse safety concerns. These clinical trials used simple phage suspensions without any formulation and phage stability was of secondary concern. Phages have a limited stability in solution, and undergo a significant drop in phage titre during processing and storage which is unacceptable if phages are to become regulated pharmaceuticals, where stable dosage and well defined pharmacokinetics and pharmacodynamics are de rigueur...
May 14, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28687406/comparative-efficacy-and-toxicity-of-two-vaccine-candidates-against-sporothrix-schenckii-using-either-montanide%C3%A2-pet-gel-a-or-aluminum-hydroxide-adjuvants-in-mice
#16
Deivys Leandro Portuondo, Alexander Batista-Duharte, Lucas Souza Ferreira, Cleverton Roberto de Andrade, Camila Quinello, Damiana Téllez-Martínez, Maria Luiza de Aguiar Loesch, Iracilda Zeppone Carlos
Sporotrichosis is an important zoonosis in Brazil and the most frequent subcutaneous mycosis in Latin America, caused by different Sporothrix species. Currently, there is no effective vaccine available to prevent this disease. In this study, the efficacy and toxicity of the adjuvant Montanide™ Pet Gel A (PGA) formulated with S. schenckii cell wall proteins (ssCWP) was evaluated and compared with that of aluminum hydroxide (AH). Balb/c mice received two subcutaneous doses (1st and 14th days) of either the unadjuvanted or adjuvanted vaccine candidates...
July 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28683596/reslizumab-in-the-treatment-of-inadequately-controlled-asthma-in-adults-and-adolescents-with-elevated-blood-eosinophils-clinical-trial-evidence-and-future-prospects
#17
Jorge Máspero
Eosinophils have long been implicated as playing a central role in the pathophysiology of asthma in many patients, and eosinophilic asthma is now recognized as an important asthma endotype. Eosinophil differentiation, maturation, migration, and survival are primarily under the control of interleukin-5 (IL-5). Reslizumab is a humanized monoclonal (immunoglobulin G4/κ) antibody that binds with high affinity to circulating human IL-5 and downregulates the IL-5 signaling pathway, potentially disrupting the maturation and survival of eosinophils...
July 1, 2017: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/28681128/role-of-vital-trace-elements-in-nanocurcumin-centered-formulation-a-novel-approach-to-resuscitate-the-immune-system
#18
Mahendra Kumar Trivedi, Mayank Gangwar, Sambhu Charan Mondal, Snehasis Jana
The present paper described the immunomodulatory potential of novel nanocurcumin-based formulation enriched with trace elements and vitamins on cyclophosphamide-induced immunosuppression in rat model. Major immune-related assays were monitored such as hemagglutination assay, delayed-type hypersensitivity (DTH) reaction, cellular immune response, IgG, IgE, IgM, cerebrospinal fluid biomarkers, hematological study, antioxidant profile, and lipid biomarkers. Chemical characterization of novel formulation showed retention time (R t ) 18...
July 5, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28679495/dose-selection-for-an-adjuvanted-respiratory-syncytial-virus-f-protein-vaccine-for-older-adults-based-on-humoral-and-cellular-immune-responses
#19
Judith Falloon, Keipp Talbot, Craig Curtis, John Ervin, Diane Krieger, Filip Dubovsky, Therese Takas, Jing Yu, Li Yu, Stacie L Lambert, Tonya Villafana, Mark T Esser
This is the second phase 1 study of a respiratory syncytial virus (RSV) vaccine containing RSV fusion protein (sF) adjuvanted with glucopyranosyl lipid A in 2% stable emulsion (GLA-SE). In this randomized, double-blind study (NCT02289820, clinicaltrials.gov), 261 subjects aged ≥60 years received inactivated influenza vaccine (IIV) or a vaccine containing 120 μg sF with escalating doses of GLA (1, 2.5, or 5 μg) in SE or a vaccine containing 80 μg sF with 2.5 μg GLA in SE. Subjects receiving 120 μg sF with 2...
July 5, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28674665/local-application-of-osteoprotegerin-chitosan-gel-in-critical-sized-defects-in-a-rabbit-model
#20
Soher N Jayash, Najihah M Hashim, Misni Misran, N A Baharuddin
BACKGROUND: Osteoprotegerin (OPG) is used for the systemic treatment of bone diseases, although it has many side effects. The aim of this study was to investigate a newly formulated OPG-chitosan gel for local application to repair bone defects. Recent studies have reported that immunodetection of osteopontin (OPN) and osteocalcin (OC) can be used to characterise osteogenesis and new bone formation. METHODS: The osteogenic potential of the OPG-chitosan gel was evaluated in rabbits...
2017: PeerJ
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