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Leptospira; bacterial antigens; bacterial proteins; bioinformatics; genes; germplasm conservation; hydrophilicity; hydrophobicity; leptospirosis; lipoproteins; models; outer membrane proteins; protein secondary structure; protein tertiary structure; signal peptide; virulent strains; zoonoses
Abstract:
... Leptospirosis is a widespread zoonotic disease caused by pathogenic Leptospira species (Leptospiraceae). LipL32 is a highly abundant lipoprotein from the outer membrane proteins (OMPs) group, which highly conserved among pathogenic and intermediate Leptospira species. Several studies used LipL32 as a specific gene to identify the presence of leptospires. This research was aimed to study on the cha ...
... Leptospirosis is an important zoonotic disease with several maintenance host species including swine. A cross sectional survey was undertaken between January to October 2020 to investigate the prevalence of leptospirosis in farmed swine in the Hong Kong Special Administrative Region (HKSAR) of China. Serum samples were collected from swine on seven farms (15 swine per farm; ten multiparous sows an ...
... Polymyxin B (PX) forms complexes with the O-antigenic lipopolysaccharide (LPS) of Salmonella typhimurium which are stable in aqueous 0.14 ᴍ sodium chloride at neutral pH. PX can be quantitatively recovered from the complex by changing the pH from 7 to 1, or by treatment with the cationic detergent cetylpyridinium chloride. This proves that complex formation does not involve covalent linkages, but ...
... Aeromonas salmonicida subsp. salmonicida (A. salmonicida) is a highly pathogenic bacterium for turbot culture, which represents a great threat in fish farming. In this study, gross and histological lesions in turbot experimentally inoculated with A. salmonicida were analysed. In addition, the distribution of the bacterial antigen in tissues was investigated by using an immunohistochemical method s ...
... Passive transfer of antibodies from hen to egg has value to both the producer of commercial polyclonal egg antibody and the producer of hatching eggs. Water-in-oil emulsions are commonly amended with immune stimulants such as Mycobacteria (e.g., Freund complete adjuvant; FCA) to increase antibody production to soluble protein antigens (SPA). Recent discoveries of the mechanisms by which microbial ...
... Defining the function and protective capacity of mycobacterial antigens is crucial for progression of tuberculosis (TB) vaccine candidates to clinical trials. The Ag85B protein is expressed by all pathogenic mycobacteria and is a component of multiple TB vaccines under evaluation in humans. In this report we examined the role of the BCG Ag85B protein in host cell interaction and vaccine-induced pr ...
... Transgenic lettuce plants (Lactuca sativa L.) with genes coding the synthesis of tuberculous antigens were obtained using the Agrobacterium-mediated transformation procedure. Cotyledonary leaves of in vitro lettuce seedlings (cvs. Eralash, Snezhinka, and Rubinovoe Kruzhevo) were transformed with plasmids containing nptII, a selective neomycin phosphotransferase II gene, and ESAT6, Ag85B (-TMD), an ...
... Bacterial vaccines have been widely used to prevent infectious diseases, especially in veterinary medicine. Although there are many reports on bacterin adjuvants, only a few contain innovations in bacterin adjuvants. Taking this into consideration, in this study we designed and synthesized a new aluminum (oxy) hydroxide (AlOOH) nanorod (Al-NR) with a diameter of 200 ± 80 nm and a length of 1.1 ± 0 ...
Koo, Hye Cheong; Park, Yong Ho; Hamilton, Mary Jo; Barrington, George M.; Davies, Christopher J.; Kim, Jong Bae; Dahl, John L.; Waters, W. Ray; Davis, William C.
... Johne's disease of cattle is widespread and causes significant economic loss to producers. Control has been hindered by limited understanding of the immune response to the causative agent, Mycobacterium avium subsp. paratuberculosis, and lack of an effective vaccine and sensitive specific diagnostic assays. The present study was conducted to gain insight into factors affecting the immune response ...
Karine M. De Amicis; Samar Freschi de Barros; Raquel E. Alencar; Edilberto Postól; Carlo de Oliveira Martins; Helen Andrade Arcuri; Cibelly Goulart; Jorge Kalil; Luiza Guilherme
... Streptococcus pyogenes is responsible for infections as pharyngitis, sepsis, necrotizing fasciitis and streptococcal toxic shock syndrome. The M protein is the major bacterial antigen and consists of both polymorphic N-terminal portion and a conserved region. In the present study, we analyzed the in vitro ability of StreptInCor a C-terminal candidate vaccine against S. pyogenes to induce antibodie ...
... Contagious bovine pleuropneumonia (CBPP) caused by Mycoplasma mycoides subsp. mycoides small colony type (MmmSC) has been eradicated in the developed world, but it is still present in many countries of sub-Saharan Africa. After initially successful control measures in the 1960s it has been spreading due to a lack of money, fragmentation of veterinary services, uncontrolled cattle movement, insuffi ...
... Control of blood-borne infections is dependent on antigen-specific effector and memory T cells and high-affinity IgG responses. In chronic infections characterized by a high antigen load, it has been shown that antigen-specific T and B cells are vulnerable to downregulation and apoptosis. Anaplasma marginale is a persistent infection of cattle characterized by acute and chronic high-load bacteremi ...
Sutten, Eric L.; Norimine, Junzo; Beare, Paul A.; Heinzen, Robert A.; Lopez, Job E.; Morse, Kaitlyn; Brayton, Kelly A.; Gillespie, Joseph J.; Brown, Wendy C.
... Anaplasma and related Ehrlichia spp. are important tick-borne, Gram-negative bacterial pathogens of livestock and humans that cause acute infection and disease and can persist. Immunization of cattle with an Anaplasma marginale fraction enriched in outer membranes (OM) can provide complete protection against disease and persistent infection. Serological responses of OM vaccinees to the OM proteome ...
... Enterotoxigenic Escherichia coli (ETEC) strains that produce K88 (F4)+ fimbria are important causes of diarrhea and post-diarrheal septicemia in swine. ETEC O8:K87, a serotype represented by a number of these strains, is typically serum resistant. Strain-specific antibodies are known to activate alternative C pathway-mediated killing of other serum-resistant E. coli [Hill, A.W., Shears, A.L., Hibb ...
... IgY, the egg yolk immunoglobulin, equivalent to the IgG from mammals, has been used in veterinary practice for passive immunisation against bacterial or viral infectious diseases. Enteropathogenic Escherichia coli (EPEC) is the main etiological agent of infantile diarrhoea in Brazil and other developing countries. Our aims were to isolate immunoglobulin IgY from egg yolk laid by EPEC -immunised Le ...
Garmory, Helen S.; Leckenby, Matthew W.; Griffin, Kate F.; Elvin, Stephen J.; Taylor, Rosa R.; Hartley, M. Gill; Hanak, Julian A. J.; Williamson, E. Diane; Cranenburgh, Rocky M.
... Live, attenuated bacteria are effective vectors for heterologous antigen delivery. However, loss of heterologous gene-bearing plasmids is problematic, and antibiotics and their resistance genes are not desirable for in vivo DNA vaccine delivery due to biosafety and regulatory concerns. To solve this problem, we engineered the first vaccine delivery strain that has no requirement for antibiotics or ...