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https://www.readbyqxmd.com/read/29122476/efficacy-of-leptospiral-commercial-vaccines-on-the-protection-against-an-autochtonous-strain-recovered-in-brazil
#1
Rafael Bazaglia Sonada, Sérgio Santos de Azevedo, Francisco Rafael Martins Soto, Diego Figueiredo da Costa, Zenaide Maria de Morais, Gisele Oliveira de Souza, Amane Paldês Gonçales, Fabiana Miraglia, Sílvio Arruda Vasconcellos
In swine and bovines, leptospirosis prevention and control is carried out via vaccination of susceptible animals using bacterins. However, the efficiency of leptospirosis vaccines has been questioned. This work aimed to investigate the potency of five leptospirosis vaccines sold commercially in Brazil, challenging the animals with one autochthonous strain of Leptospira, Canicola serovar, denoted LO4, isolated from swine. The standard protocol was followed, and renal carriers of Leptospira were identified among the surviving animals by culture and PCR...
October 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29103697/antigenic-characterization-of-moraxella-bovis-moraxella-bovoculi-and-moraxella-ovis-strains-with-potential-use-in-vaccines
#2
Ananda Paula Kowalski, Grazieli Maboni, Letícia Trevisan Gressler, Julia Pires Espíndola, Cláudia Balzan, Caiane Tasca, João Antônio Guizzo, Fabricio Rochedo Conceição, Rafael Frandoloso, Agueda Castagna de Vargas
Moraxella bovis is historically known as the primary agent of infectious bovine keratoconjunctivitis (IBK). However, Moraxella bovoculi and Moraxella ovis are also reported to be involved in the pathogenesis of IBK, therefore, these three species should be included in the development of a new vaccine with a broad-spectrum protection against the disease natural challenge. In this study we investigated the antigenic properties of clinical isolates and reference strains of M. bovis, M. bovoculi and M. ovis using a novel in vitro approach for vaccine evaluation based on two techniques, flow cytometry and western blotting (WB)...
October 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29097324/effect-of-oral-booster-vaccination-of-rainbow-trout-against-yersinia-ruckeri-depends-on-type-of-primary-immunization
#3
Rzgar M Jaafar, Azmi Al-Jubury, Inger Dalsgaard, Asma MohammadKarami, Per W Kania, Kurt Buchmann
Vaccination of rainbow trout against Enteric Redmouth Disease (ERM) caused by Yersinia ruckeri can be successfully performed by administering vaccine (a bacterin consisting of formalin killed bacteria) by immersion, bath or injection. Booster immunization is known to increase the protection of fish already primed by one of these vaccination methods. Oral vaccination of trout (administering vaccine in feed) is an even more convenient way of presenting antigen to the fish but the effect of an oral booster has not previously been described in detail...
October 30, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29079106/induction-of-a-balanced-igg1-igg2-immune-response-to-an-experimental-challenge-with-mycoplasma-bovis-antigens-following-a-vaccine-composed-of-emulsigen%C3%A2-idr-peptide1002-and-poly-i-c
#4
Tracy Prysliak, Teresia Maina, Lu Yu, Muhammad Suleman, Steve Jimbo, Jose Perez-Casal
Prevention and or control of Mycoplasma bovis infections in cattle have relied on the treatment of animals with antibiotics; herd management including separation and or culling infected animals; and the use of vaccines with limited protection. Due to the negative reactions and incomplete protection observed after vaccination with some bacterin-based vaccines, there is a need to put more efforts in the development of recombinant-based vaccines. However, the arsenal of antigens that may be suitable for a fully protective vaccine is rather limited at this point...
October 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28983933/effect-of-orally-administered-vibrio-bacterin-on-immunity-survival-and-growth-in-tiger-shrimp-penaeus-monodon-grow-out-culture-ponds
#5
A K Ray, C Gopal, H G Solanki, T Ravisankar, P K Patil
Vibriosis is one of the important diseases causing economic loss to the shrimp industry worldwide. The present study reports field observations on the immune stimulatory effect of vibrio bacterin in commercial tiger shrimp (Penaeus monodon) grow-out culture ponds (n = 62) which were grouped under three stocking densities; low (6-8 nos per m(2) ), medium (9-11 nos per m(2) ) and high (12-14 nos per m(2) ). The bacterin was administered in feed as a top dressing at final concentration equivalent to 2 × 10(8) CFU per kilogram feed twice a week throughout the culture period...
October 6, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28882798/modulatory-in%C3%A2-vitro-effect-of-stress-hormones-on-the-cytokine-response-of-rainbow-trout-and-gilthead-sea-bream-head-kidney-stimulated-with-vibrio-anguillarum-bacterin
#6
Ali Reza Khansari, David Parra, Felipe E Reyes-López, Lluís Tort
In fish, the stress response and their consequences in the immune system have been widely described. Recently, a differential cytokine regulation between rainbow trout (Oncorhynchus mykiss) and gilthead sea bream (Sparus aurata) was reported after treatment with stress hormones together with their receptor antagonists. Nevertheless, there is no evidence of whether antagonists for stress hormone receptors may influence the interaction between hormones and cytokines after bacterial administration. Thus, the aim of our study was to evaluate the cytokine expression in the presence of stress hormones (cortisol, ACTH, adrenaline), hormone receptor antagonists and inactivated Vibrio anguillarum bacterin in rainbow trout and gilthead sea bream head kidney primary cell culture (HKPCC)...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28844720/development-and-standardization-of-an-in-house-indirect-elisa-for-detection-of-duck-antibody-to-fowl-cholera
#7
Pichayanut Poolperm, Thanya Varinrak, Yasushi Kataoka, Khajornsak Tragoolpua, Takuo Sawada, Nattawooti Sthitmatee
Serological tests, such as agglutination and indirect hemagglutination assay (IHA), have been used to identify antibodies against Pasteurella multocida in poultry sera, but none are highly sensitive. An enzyme-linked immunosorbent assays (ELISA) has been used with varying degrees of success in attempts to monitor seroconversion in vaccinated poultry, but are not suitable for diagnosis. Commercial ELISA kits are available for chickens and turkeys, but not for ducks. The present study reports development and standardization of an in-house indirect ELISA for detection of duck antibody to fowl cholera...
November 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28828973/be-aware-of-immunogenic-but-not-protective-antigens-the-actinobacillus-pleuropneumoniae-pala-as-an-example
#8
Caihong Liu, Yurou Cao, Jihong Yang, Haobin Zhao, Kashif Rafiq Zahid, Jin Zhao, Chao Qi, Jinlin Liu
Identification of immunogenic antigens is an important step for the vaccine improvement of infectious diseases. Previous studies indicated that Actinobacillus pleuropneumoniae PalA is homologous to a Haemophilus influenzae protective antigen Hi-PAL (P6) protein. However, PalA protein adversely affects the Apx toxin-based subunit vaccine. In this study, we confirmed that recombinant PalA is immunogenic in animals. Mice immunized with bacterin and PalA (BacPal) showed significantly less antibodies against Apx toxins, relative to that of animals immunized with bacterin alone (Bac) before challenge...
August 22, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28757198/dissecting-the-immune-pathways-stimulated-following-injection-vaccination-of-rainbow-trout-oncorhynchus-mykiss-against-enteric-redmouth-disease-erm
#9
Eakapol Wangkahart, Christopher J Secombes, Tiehui Wang
Enteric redmouth disease (ERM or yersiniosis) is one of the most important diseases of salmonids and leads to significant economic losses. It is caused by the Gram-negative bacterium Yersinia ruckeri but can be controlled by bacterin vaccination. The first commercial ERM vaccine was licenced in 1976 and is one of the most significant and successful health practices within the aquaculture industry. Although ERM vaccination provides complete protection, knowledge of the host immune response to the vaccine and the molecular mechanisms that underpin the protection elicited is limited...
July 27, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28736920/obtainment-and-evaluation-of-adjuvant-effect-of-the-aromatic-geranyl-derivative-filifolinone-in-bacterin-of-piscirickettsia-salmonis
#10
M Parra, B Valenzuela, M Imarai, B Modak
No abstract text is available yet for this article.
July 24, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28724973/alternatives-to-mineral-oil-adjuvants-in-vaccines-against-aeromonas-salmonicida-subsp-salmonicida-in-rainbow-trout-offer-reductions-in-adverse-effects
#11
Kasper Rømer Villumsen, Erling Olaf Koppang, Dennis Christensen, Anders Miki Bojesen
In an effort to reduce the frequency and severity of adverse reactions seen from the use of mineral oil adjuvants in salmonid fish, the effects of two alternative adjuvants were assessed, focusing on the induction of adverse effects as well as protection. Using rainbow trout (Oncorhynchus mykiss) as recipients, injection vaccines based on formalin-inactivated Aeromonas salmonicida subspecies salmonicida were formulated with CpG oligodeoxynucleotides, the liposomal cationic adjuvant formulation 01 (CAF01) or with Freund's incomplete adjuvant and administered intraperitoneally...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707702/secondary-immune-response-of-rainbow-trout-following-repeated-immersion-vaccination
#12
R M Jaafar, A Al-Jubury, J K Chettri, I Dalsgaard, P W Kania, K Buchmann
Teleosts are able to raise a protective immune response, comprising both innate and adaptive elements, against various pathogens. This is the basis for a widespread use of vaccines, administered as injection or immersion, in the aquaculture industry. It has been described that repeated injection vaccination of fish raises a secondary immune response, consisting of rapid, accelerated and increased antibody reaction. This study reports how rainbow trout responds to repeated immersion vaccination against yersiniosis (ERM) caused by the bacterial pathogen Yersinia ruckeri...
July 14, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28668566/vaccination-of-horses-with-lyme-vaccines-for-dogs-induces-short-lasting-antibody-responses
#13
Cassandra Guarino, Sanda Asbie, Jennifer Rohde, Amy Glaser, Bettina Wagner
Borrelia burgdorferi can induce Lyme disease. Approved Lyme vaccines for horses are currently not available. In an effort to protect horses, veterinarians are using Lyme vaccines licensed for dogs. However, data to assess the response of horses to, or determine the efficacy of this off-label vaccine use are missing. Here, antibodies against outer surface protein A (OspA), OspC, and OspF were quantified in diagnostic serum submissions from horses with a history of vaccination with canine Lyme vaccines. The results suggested that many horses respond with low and often short-lasting antibody responses...
July 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28648038/-effects-of-na-h-exchanger-1-inhibitor-on-intestinal-injury-of-rats-with-burn-sepsis-and-the-mechanism
#14
W P Li, G Y Zhao, X K Yang
Objective: To observe the effects of Na(+) /H(+) exchanger 1 (NHE1) inhibitor on intestinal injury of rats with burn sepsis, and to explore the possible mechanism preliminarily. Methods: Ninety SD rats were divided into control group, pure sepsis group, and NHE1 inhibitor group according to the random number table, with 30 rats in each group. Full-thickness scald (hereinafter referred to as burn) model with 20% total body surface area were reproduced on the back of rats in pure sepsis and NHE1 inhibitor groups, and then 50 μL liquid of Pseudomonas aeruginosa ATCC 27853 (2×10(5) colony forming unit/mL) were injected into the center of wounds on the back...
June 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28624468/fish-mass-immunization-against-virus-with-recombinant-spiny-bacterins
#15
Julio Coll
Bacterins obtained from recombinant bacteria displaying heterologous antigens in its surface coded by prokaryotic rather than eukaryotic expression plasmids (here called "spiny" bacterins or spinycterins), have been used to increase fish immunogenicity of recombinant viral protein fragments. To explore their immunogenicity, five bacterial-specific membrane anchor-motifs characterized in the literature (Nmistic, Mistic, NTD, YAIN and YBEL) were genetically fused to the immunorelevant cystein-free 117 amino acid fragment II from the ORF149 of cyprinid herpes virus 3 (frgIICyHV3)...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28622574/analysis-of-adipose-tissue-immune-gene-expression-after-vaccination-of-rainbow-trout-with-adjuvanted-bacterins-reveals-an-association-with-side-effects
#16
Kimberly A Veenstra, Tiehui Wang, Ayham Alnabulsi, Alex Douglas, K Spencer Russell, Lincoln Tubbs, Juliette Ben Arous, Christopher J Secombes
Most existing fish vaccines are presented in the form of oil-based emulsions delivered by intraperitoneal injection. Whilst very effective they are frequently associated with inflammatory responses that can result in clinically significant side-effects often involving the adipose tissue that is in direct contact with the vaccine. To explore the potential of immune gene expression changes in the adipose tissue of fish to be markers of vaccination efficacy or development of side-effects we have studied the response to a bacterial (Aeromonas salmonicida) vaccine administered with two different adjuvants...
August 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28588575/gut-associated-lymphoid-tissue-a-key-tissue-inside-the-mucosal-immune-system-of-hens-immunized-with-escherichia-coli-f4
#17
Maria F Peralta, Alejandra Magnoli, Fabrisio Alustiza, Armando Nilson, Raúl Miazzo, Adriana Vivas
Immunoglobulin Y (IgY) is the predominant antibody found in hen's (Gallus domesticus) egg yolk. This antibody, developed against several microorganisms in hen egg yolk, has been successfully used as an alternative to immunoglobulins from mammals for use in immunodiagnostics and immunotherapy. Enteropathogenic Escherichia coli (E.coli) F4 is the main etiological agent associated with swine neonatal diarrhea, and it causes notable economic losses in swine production. The aim of the present study was to evaluate the relationship between humoral immune response and the activation of gut-associated lymphoid tissue (GALT) in laying hens intramuscularly immunized with E...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28548700/efficacy-testing-of-35-year-old-commercially-produced-erm-bacterin-reveals-the-remarkable-stability-of-this-product
#18
T J Welch, T D Goodrich, S E LaPatra
No abstract text is available yet for this article.
May 26, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28522991/brachyspira-hyodysenteriae-and-b-pilosicoli-proteins-recognized-by-sera-of-challenged-pigs
#19
Vanessa Casas, Arantza Rodríguez-Asiain, Roberto Pinto-Llorente, Santiago Vadillo, Montserrat Carrascal, Joaquin Abian
The spirochetes Brachyspira hyodysenteriae and B. pilosicoli are pig intestinal pathogens that are the causative agents of swine dysentery (SD) and porcine intestinal spirochaetosis (PIS), respectively. Although some inactivated bacterin and recombinant vaccines have been explored as prophylactic treatments against these species, no effective vaccine is yet available. Immunoproteomics approaches hold the potential for the identification of new, suitable candidates for subunit vaccines against SD and PIS. These strategies take into account the gene products actually expressed and present in the cells, and thus susceptible of being targets of immune recognition...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28496441/discovery-of-novel-leptospirosis-vaccine-candidates-using-reverse-and-structural-vaccinology
#20
André Alex Grassmann, Frederico Schmitt Kremer, Júlia Cougo Dos Santos, Jéssica Dias Souza, Luciano da Silva Pinto, Alan John Alexander McBride
Leptospira spp. are diderm (two membranes) bacteria that infect mammals causing leptospirosis, a public health problem with global implications. Thousands of people die every year due to leptospirosis, especially in developing countries with tropical climates. Prophylaxis is difficult due to multiple factors, including the large number of asymptomatic hosts that transmit the bacteria, poor sanitation, increasing numbers of slum dwellers, and the lack of an effective vaccine. Several leptospiral recombinant antigens were evaluated as a replacement for the inactivated (bacterin) vaccine; however, success has been limited...
2017: Frontiers in Immunology
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