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https://www.readbyqxmd.com/read/28194462/designing-an-efficient-multi-epitope-oral-vaccine-against-helicobacter-pylori-using-immunoinformatics-and-structural-vaccinology-approaches
#1
Navid Nezafat, Mahboobeh Eslami, Manica Negahdaripour, Mohammad Reza Rahbar, Younes Ghasemi
Helicobacter pylori is the cunning bacterium that can live in the stomachs of many people without any symptoms, but gradually can lead to gastric cancer. Due to various obstacles, which are related to anti-H. pylori antibiotic therapy, recently developing an anti-H. pylori vaccine has attracted more attention. In this study, different immunoinformatics and computational vaccinology approaches were employed to design an efficient multi-epitope oral vaccine against H. pylori. Our multi-epitope vaccine is composed of heat labile enterotoxin IIc B (LT-IIc) that is used as a mucosal adjuvant to enhance vaccine immunogenicity for oral immunization, cartilage oligomeric matrix protein (COMP) to increase vaccine stability in acidic pH of gut, one experimentally protective antigen, OipA, and two hypothetical protective antigens, HP0487 and HP0906, and "CTGKSC" peptide motif that target epithelial microfold cells (M cells) to enhance vaccine uptake from the gut barrier...
February 14, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28183153/effects-of-armillariella-tabescens-mycelia-on-the-growth-performance-and-intestinal-immune-response-and-microflora-of-early-weaned-pigs
#2
Wen-Bin Chen, Mao-Ji Cheng, Yun-Bo Tian, Qin-Hua Wang, Bing Wang, Mei-Jun Li, Re-Jun Fang
This study was performed to evaluate effects of Armillariella tabescens (A. tabescens) on the growth performance and intestinal immune response and microflora in early-weaned pigs when used as feed additive. A. tabescens mycelia were added to basal diets at concentrations of 0%, 0.1%, 0.3% or 0.9% (w/w). A total of 144 commercial cross-bred piglets were randomly allocated to one of these four diets and fed for 30 days. The growth performance of early-weaned piglets displayed improvement with diets containing 0...
February 9, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28151031/modulation-by-bovine-lactoferrin-of-parameters-associated-with-the-iga-response-in-the-proximal-and-distal-small-intestine-of-balb-c-mice
#3
Marycarmen Godínez-Victoria, Teresita Rocío Cruz-Hernández, Humberto Reyna-Garfias, Reyna Elizabeth Barbosa-Cabrera, Maria Elisa Drago-Serrano, María Cristina Sánchez-Gómez, Rafael Campos-Rodríguez
BACKGROUND: Secretory IgA (SIgA) and the polymeric immunoglobulin receptor (pIgR) have a pivotal role in gut homeostasis. Bovine lactoferrin (bLf) has been shown to modulate intestinal immunity and endogenous corticosterone. Considering the regionalization of the intestinal immune response, the aim of this work was to compare the impact of bLf on the IgA response in the proximal versus distal small intestine under physiological conditions. METHODS: Groups of healthy male BALB/c mice were orally treated with one daily dose of bLf (50, 500, or 5000 μg) or untreated (control) for 7 d, and then sacrificed...
February 2, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28149416/monitoring-salivary-immunoglobulin-a-responses-to-official-and-simulated-matches-in-elite-young-soccer-players
#4
Camila G Freitas, Marcelo S Aoki, Ademir F S Arruda, Clóvis Franciscon, Alexandre Moreira
The purpose of the present study was to examine SIgA responses (concentration [SIgAabs] and a secretion rate [SIgArate]) to official and simulated competitive matches in young soccer players. The sample was composed of 26 male soccer players (age 15.6 ± 1.1 yrs, stature 177.0 ± 6.1 cm, body mass 70.5 ± 5.7 kg). Four soccer matches (two simulated matches [SM] and two official matches [OM]) were conducted. The matches consisted of two halves of 35 min with a 10 min rest interval. Each assessed player participated in only one SM and one OM...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28137624/incorporation-of-a-bi-functional-protein-fimh-enhances-the-immunoprotection-of-chitosan-pvp1-vaccine-against-coxsackievirus-b3-induced-myocarditis
#5
Xiangmei Fan, Yan Yue, Sidong Xiong
Viral myocarditis is a common clinical cardiovascular disease mainly induced by coxsackievirus B3 (CVB3) with no effective therapeutic measures. Induction of efficient mucosal immune responses is very critical against CVB3-induced myocarditis. FimH is an Escherichia coli (E. coli)-derived protein, which possesses an M cell-targeting property and functions as a TLR4 agonist. In this study, we introduced the recombinant FimH protein, into our previously developed CVB3 mucosal vaccine chitosan (CS)-pVP1, aiming to provoke more efficient mucosal immune responses and immunoprotection against CVB3-induced myocarditis...
January 28, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28118501/immunoglobulin-a-and-nutrients-in-milk-from-great-apes-throughout-lactation
#6
Miriam Garcia, Michael L Power, Kasey M Moyes
: Differences in macronutrients between human and ape milks appear relatively small, but variation in other components such as immunoglobulins (Ig) may be greater. This study characterized the macronutrient and secretory (sIgA) profiles in milk from gorillas and orangutans throughout lactation. Fifty-three milk samples from four gorillas and three orangutans were collected throughout 48 and 22 months postpartum (MPP), respectively. Samples were grouped in five stages of lactation (0 to 6 months, more than 6 months to 12 months, more than 12 months to 18 months, more than 18 months to 36 months, and more than 36 months to 48 months)...
March 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28115360/saccharomyces-boulardii-administration-can-inhibit-the-formation-of-gastric-lymphoid-follicles-induced-by-helicobacter-suis-infection
#7
Lin Yang, Zi-Bin Tian, Ya-Nan Yu, Cui-Ping Zhang, Xiao-Yu Li, Tao Mao, Xue Jing, Wen-Jun Zhao, Xue-Li Ding, Ruo-Ming Yang, Shuai-Qing Zhang
Helicobacter suis has a greater tendency to induce gastric mucosa-associated lymphoid tissue (MALT) lymphoma compared with other Helicobacter species in humans and animals. Saccharomyces (S.) boulardii has been established as an adjunct to Helicobacter pylori eradication treatment, but the effect of S. boulardii administration alone on Helicobacter infection remains unclear. Here, we found that S. boulardii administration effectively decreased the bacterial load of Helicobacter suis and inhibited the formation of lymphoid follicles in the stomach post-infection...
January 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28066935/effects-of-corn-distillers-dried-grains-with-solubles-on-performance-oxidative-status-intestinal-immunity-and-meat-quality-of-chinese-yellow-broilers
#8
D Ruan, S Q Jiang, Y J Hu, F Y Ding, Q L Fan, F Chen, X J Lin, L Li, Y Wang
The study assessed the effects of different dietary levels of corn distillers dried grains with solubles (DDGS) on performance, oxidation status, intestinal immunity and meat quality in Chinese Yellow broilers aged from 1 to 63 days. Lingnan male hatchings (1440) were randomly assigned to six treatments, each consisting of six replicates of 40 birds. The basal diet (I) was a typical corn-soya bean ration while the experimental diets (II to VI) partially substituted corn DDGS for soya bean meal. The level of substitution in starter, grower and finisher diets was as follows: II, 2%, 4% then 6%; III, 4%, 8% then 12%; IV, 6%, 12% then 18%; V, 8%, 16% then 24%; VI, 10%, 20% then 30%...
January 8, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28061998/effects-of-mycoplasma-hyopneumoniae-on-porcine-nasal-cavity-dendritic-cells
#9
Yumeng Shen, Weiwei Hu, Yanna Wei, Zhixin Feng, Qian Yang
Mycoplasma hyopneumoniae (Mhp) is the primary etiological agent responsible for swine enzootic pneumonia (EP), a disease that cause tremendous economic losses all over the swine industry. Dendritic cells (DCs), the most effective antigen-presenting cells, are widely distributed beneath respiratory epithelium. DCs uptake and present antigens to T cells, to initiate protective immune responses or generate immune-mediated pathology in different infections. In this study, we investigated the changes in the different DCs subpopulations, T cells and SIgA positive cells counts in porcine nasal cavity after long time Mhp infection...
January 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28052136/intranasal-immunization-using-mannatide-as-a-novel-adjuvant-for-an-inactivated-influenza-vaccine-and-its-adjuvant-effect-compared-with-mf59
#10
Shu-Ting Ren, Xue-Mei Zhang, Peng-Fei Sun, Li-Juan Sun, Xue Guo, Tian Tian, Jian Zhang, Qi-Yuan Guo, Xue Li, Li-Jun Guo, Jin Che, Bing Wang, Hui Zhang
Intranasal vaccination is more potent than parenteral injection for the prevention of influenza. However, because the poor efficiency of antigen uptake across the nasal mucosa is a key issue, immunostimulatory adjuvants are essential for intranasal vaccines. The immunomodulator mannatide or polyactin (PA) has been used for the clinical treatment of impaired immunity in China, but its adjuvant effect on an inactivated trivalent influenza vaccine (ITIV) via intranasal vaccination is unclear. To explore the adjuvant effect of PA, an inactivated trivalent influenza virus with or without PA or MF59 was instilled intranasally once a week in BALB/c mice...
2017: PloS One
https://www.readbyqxmd.com/read/28018863/immunization-with-the-mipa-skp-or-etec_2479-antigens-confers-protection-against-enterotoxigenic-e-coli-strains-expressing-different-colonization-factors-in-a-mouse-pulmonary-challenge-model
#11
Michael P Hays, Amit Kumar, Francisco J Martinez-Becerra, Philip R Hardwidge
Achieving cross-protective efficacy against multiple bacterial strains or serotypes is an important goal of vaccine design. Enterotoxigenic Escherichia coli (ETEC) is an important cause of diarrheal disease in underdeveloped nations. We have been interested in identifying and characterizing ETEC antigens that generate protective immune responses independent of ETEC colonization factor (CF) expression. Our previous studies used proteomics to identify the ETEC MipA, Skp, and ETEC_2479 proteins as effective in protecting mice from homologous challenge with ETEC H10407 using a pulmonary inoculation model...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28017697/anti-inflammatory-and-antioxidant-effect-of-modified-bazhengsan-in-a-rat-model-of-chronic-bacterial-prostatitis
#12
Youyi Xiong, Xingtao Qiu, Weijing Shi, Hao Yu, Xiaolin Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Bazhengsan is a commonly used traditional Chinese prescription for the treatment of the urogenital system diseases for thousands of years, which decoction was first described in Prescriptions of the Bureau of Taiping People's Welfare Pharmacy in Song Dynasty. AIM OF THE STUDY: In this study, the potential of modified Bazhengsan (mBazhengsan) as a chronic bacterial prostate inflammation inhibitor was investigated in a rat model. MATERIALS AND METHODS: Rat prostates were injected with Escherichia coli to induce inflammation by the sterile operation...
December 22, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28009318/indicators-of-phagocytic-component-and-secretory-iga-in-children-with-bronchial-asthma-secondary-to-undifferentiated-connective-tissue-dysplasia
#13
V Semianchuk, L Haridzhuk, O Bobrykovych
Its aim is to improve the diagnostics and treatment of Bronchial Asthma. There were examined 93 children with bronchial asthma at the age of 6-10 years. All patients were diagnosed with partially controlled or uncontrolled clinical course of bronchial asthma and manifestations of undifferentiated connective tissue dysplasia. The control group included 21 practically healthy children of the same age. The diagnosis of bronchial asthma was made, and the clinical course was determined in accordance with the criteria approved by the Order of Ministry of Health of Ukraine of October 08, 2013 No 868 "Unified clinical protocol of primary, secondary (specialized) medical care "Bronchial Asthma in Children" and GINA criteria (updated in 2015)...
November 2016: Georgian Medical News
https://www.readbyqxmd.com/read/28005959/an-intranasal-proteosome-adjuvanted-trivalent-influenza-vaccine-is-safe-immunogenic-efficacious-in-the-human-viral-influenza-challenge-model-serum-igg-mucosal-iga-are-important-correlates-of-protection-against-illness-associated-with-infection
#14
Rob Lambkin-Williams, Colin Gelder, Richard Broughton, Corey P Mallett, Anthony S Gilbert, Alex Mann, David He, John S Oxford, David Burt
INTRODUCTION: A Proteosome-adjuvanted trivalent inactivated influenza vaccine (P-TIV) administered intra-nasally was shown to be safe, well tolerated and immunogenic in both systemic and mucosal compartments, and effective at preventing illness associated with evidence of influenza infection. METHODS: In two separate studies using the human viral challenge model, subjects were selected to be immunologically naive to A/Panama/2007/1999 (H3N2) virus and then dosed via nasal spray with one of three regimens of P-TIV or placebo...
2016: PloS One
https://www.readbyqxmd.com/read/27999701/an-unusual-laryngeal-foreign-body-in-adult
#15
Cire Ndiaye, Eric Joel Regonne, Houra Ahmed, Evelyne Siga Diom, Richard Edouard Alain Deguenonvo, Aminata Mbaye, Yilkal Zemene, Issa Cheikh Ndiaye
The accidental aspiration of a foreign body is a frequent domestic accident among children but a rare occurrence in adults. The laryngeal impaction of a coin is an unusual accident; only a few cases have been reported in the literature. Diagnosis is mostly achieved by clinicoradiological examinations. The authors report an uncommon case of laryngeal impaction of a coin in a 21-year-old patient, presenting with dysphonia without dyspnea or stridor. The extraction was performed by endoscopy.
2016: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/27933057/glutamine-induced-secretion-of-intestinal-secretory-immunoglobulin-a-a-mechanistic-perspective
#16
REVIEW
Wenkai Ren, Kai Wang, Jie Yin, Shuai Chen, Gang Liu, Bie Tan, Guoyao Wu, Fuller W Bazer, Yuanyi Peng, Yulong Yin
Secretory immunoglobulin A (SIgA) is one important line of defense in the intestinal mucosal surface to protect the intestinal epithelium from enteric toxins and pathogenic microorganisms. Multiple factors, such as intestinal microbiota, intestinal cytokines, and nutrients are highly involved in production of SIgA in the intestine. Recently, glutamine has been shown to affect intestinal SIgA production; however, the underlying mechanism by which glutamine stimulates secretion of intestinal SIgA is unknown. Here, we review current knowledge regarding glutamine in intestinal immunity and show that glutamine-enhanced secretion of SIgA in the intestine may involve intestinal microbiota, intestinal antigen sampling and presentation, induction pathways for SIgA production by plasma cells (both T-dependent and T-independent pathway), and even transport of SIgA...
2016: Frontiers in Immunology
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
#17
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/27927058/immunoadjuvant-potential-of-cross-linked-dextran-microspheres-mixed-with-chitosan-nanospheres-encapsulated-with-tetanus-toxoid
#18
Haniyeh Pirouzmand, Bahman Khameneh, Mohsen Tafaghodi
CONTEXT: Nasal mucosa is a desirable route for mucosal vaccine delivery. Mucosal co-administration of chitosan nanoparticles with absorption enhancers such as cross-linked dextran microspheres (CDM, Sephadex(®)) is a promising antigen delivery system. OBJECTIVE: In the current study, the chitosan nanospheres loaded with tetanus toxoid (CHT:TT NPs) was prepared and characterized. The immune responses against tetanus toxoid after nasal administration of CHT:TT NPs alone or mixed with CDM were also determined...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27921401/effects-of-soybean-isoflavone-on-intestinal-antioxidant-capacity-and-cytokines-in-young-piglets-fed-oxidized-fish-oil
#19
Lin Huang, Xian-Yong Ma, Zong-Yong Jiang, You-Jun Hu, Chun-Tian Zheng, Xue-Fen Yang, Li Wang, Kai-Guo Gao
To investigate the effect of glycitein, a synthetic soybean isoflavone (ISF), on the intestinal antioxidant capacity, morphology, and cytokine content in young piglets fed oxidized fish oil, 72 4-d-old male piglets were assigned to three treatments. The control group was fed a basal diet containing fresh fish oil, and the other two groups received the same diet except for the substitution with the same dosage of oxidized fish oil alone or with ISF (oxidized fish oil plus ISF). After 21 d of feeding, supplementation of oxidized fish oil increased the levels of malondialdehyde (MDA), oxidized glutathione (GSSG), interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), interleukin-2 (IL-2), nuclear factor κ B (NF-κB), inducible nitric oxide synthase (iNOS), NO, and Caspase-3 in jejunal mucosa, and decreased the villous height in duodenum and the levels of secretory immunoglobulin A (sIgA) and IL-4 in the jejunal mucosa compared with supplementation with fresh oil...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27916412/kinetics-of-antibody-secreting-cell-and-fecal-iga-responses-after-oral-cholera-vaccination-in-different-age-groups-in-a-cholera-endemic-country
#20
Marjahan Akhtar, Firdausi Qadri, Taufiqur R Bhuiyan, Sarmin Akter, Tanzeem A Rafique, Arifuzzaman Khan, Laila N Islam, Amit Saha, Ann-Mari Svennerholm, Anna Lundgren
Immune responses to oral enteric vaccines in children and infants may be influenced by factors such as age, previous priming with related microorganisms and breast feeding. In this study, we aimed to determine optimal time points to assess immune responses to oral enteric vaccines in different clinical specimens. This was done by investigating antibody secreting cell (ASC) and fecal antibody responses on different days after vaccination using the licensed oral cholera vaccine Dukoral, containing cholera toxin B-subunit (rCTB) and inactivated Vibrio cholerae bacteria, as a model vaccine...
January 5, 2017: Vaccine
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