Generation of IFN-γ-producing cells that recognize the major piroplasm surface protein in Theileria orientalis-infected bovines

2010 ◽  
Vol 171 (3-4) ◽  
pp. 207-215 ◽  
Author(s):  
Takashi Yamaguchi ◽  
Masahiro Yamanaka ◽  
Sanae Ikehara ◽  
Katsuya Kida ◽  
Noritaka Kuboki ◽  
...  
Keyword(s):  
Surface Protein ◽  
Theileria Orientalis ◽  
Ifn Γ ◽  
Major Piroplasm Surface Protein

scholarly journals Pathogenic genotype of major piroplasm surface protein associated with anemia in Theileria orientalis infection in cattle

2017 ◽  
Vol 59 (1) ◽  
Author(s):  
Suhee Kim ◽  
Do-Hyeon Yu ◽  
Jeong-Byoung Chae ◽  
Kyoung-Seong Choi ◽  
Hyeon-Cheol Kim ◽  
...  
Keyword(s):  
Surface Protein ◽  
Theileria Orientalis ◽  
Major Piroplasm Surface Protein

scholarly journals Genetic Diversity of Bovine Hemoprotozoa in South Korea

Pathogens ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 768
Author(s):  
Dongmi Kwak ◽  
Min-Goo Seo
Keyword(s):  
South Korea ◽  
Clinical Symptoms ◽  
Surface Protein ◽  
18S Rrna Gene ◽  
Rrna Gene ◽  
Theileria Orientalis ◽  
Bovine Theileriosis ◽  
Major Piroplasm Surface Protein ◽  
Theileria Spp ◽  
Epidemiological Information

Tick-borne pathogens cause economically significant diseases in cattle. Theileria spp. are parasitic protozoa and the causative agent of bovine theileriosis. Here we report the distribution and risk factors of bovine Theileria using blood samples taken between 2018 and 2019. Of 737 tested cattle, nine animals (1.2%) were positive for Theileria orientalis infection by 18S rRNA gene amplification. Further analysis of the infected samples using the T. orientalis major piroplasm surface protein (MPSP) gene revealed five different genotypes circulating in the population: Types 1, 2, 3, 7, and N3. To the best of our knowledge, this is the first research to describe the existence of the T. orientalis MPSP genotype N3 in South Korea. Although the prevalence of bovine T. orientalis was low, our study offers data on the geographical distribution and prevalence of bovine Theileria spp. in South Korea. Further studies are warranted to determine the correlation of clinical symptoms with parasite MPSP genotypes. Our data provide epidemiological information to help control bovine theileriosis in South Korea.

An outbreak of oriental theileriosis in dairy cattle imported to Vietnam from Australia

Parasitology ◽  
2016 ◽  
Vol 144 (6) ◽  
pp. 738-746 ◽  
Author(s):  
HAGOS GEBREKIDAN ◽  
LINDA NELSON ◽  
GREG SMITH ◽  
ROBIN B. GASSER ◽  
ABDUL JABBAR
Keyword(s):  
Dairy Cattle ◽  
Phylogenetic Analyses ◽  
Surface Protein ◽  
Theileria Orientalis ◽  
Group 3 ◽  
Cattle Blood ◽  
The Difference ◽  
Group 2 ◽  
Major Piroplasm Surface Protein ◽  
Group 1

SUMMARYThis study reports an outbreak of oriental theileriosis in dairy cattle imported to Vietnam from Australia. Following clinical and pathological diagnoses, a total of 112 cattle blood samples were divided into three groups and tested using multiplexed tandem PCR. Group 1 were from aborted heifers in Vietnam; group 2 were from cattle before shipment from group 1 cattle and group 3 were from the same batch of cattle but transported to Taiwan. Theileria orientalis DNA was detected in 72·3% cattle. The prevalences of T. orientalis in groups 1, 2 and 3 were 77·6, 86·9 and 57·5%, respectively, and the difference in prevalence was significant between groups 1 and 3 (P < 0·0001). The infection intensities of genotypes chitose and ikeda of T. orientalis were higher in groups 1 (57 721 and 33 709, respectively) and 3 (5897 and 61 766, respectively) than those in group 2 (2071 and 6331, respectively). Phylogenetic analyses of the major piroplasm surface protein sequences revealed that genotypes chitose and ikeda determined herein were closely related to those previously reported from Australia. This first report of an outbreak of oriental theileriosis in imported cattle emphasizes improved measures for the export and import of cattle infected with T. orientalis.

scholarly journals Genotypic Analysis of Piroplasms and Associated Pathogens from Ticks Infesting Cattle in Korea

2020 ◽  
Vol 8 (5) ◽  
pp. 728 ◽  
Author(s):  
Min-Goo Seo ◽  
Oh-Deog Kwon ◽  
Dongmi Kwak
Keyword(s):  
Surface Protein ◽  
Molecular Characteristics ◽  
Haemaphysalis Longicornis ◽  
Theileria Orientalis ◽  
Cattle Ticks ◽  
Genotypic Analysis ◽  
Clinical Complexity ◽  
Tropical Areas ◽  
Anaplasma Bovis ◽  
Major Piroplasm Surface Protein

Tick-borne pathogens (TBPs) impose an important limitation to livestock production worldwide, especially in subtropical and tropical areas. Earlier studies in Korea have examined TBPs residing in ticks and animals; however, information on multiple TBPs in ticks infesting cattle is lacking. This study assessed the prevalence of TBPs in ticks parasitizing cattle. A total of 576 ticks, including 340 adults and 236 nymphs, were collected from cattle in Korea between 2014 and 2018. All ticks collected were identified as Haemaphysalis longicornis based on their morphological and molecular characteristics. Among piroplasms and other tick-associated pathogens, seven TBP genes, namely Theileria orientalis (5.0%), Anaplasma bovis (2.3%), Anaplasma capra (4.7%), Anaplasma phagocytophilum-like Anaplasma spp. (APL) clades A (1.9%) and B (0.5%), Ehrlichia canis (1.6%), and Candidatus Rickettsia longicornii (17.5%), were detected. Bartonella spp. and severe fever with thrombocytopenia syndrome virus were not found. To our knowledge, this is the first study to report the presence of the pathogens T. orientalis major piroplasm surface protein genotypes 3 and 7, A. capra, and APL in ticks from Korea. Cattle ticks may be maintenance hosts for many TBPs, and veterinary and medical clinicians should be aware of their high probability of infection and clinical complexity in humans.

scholarly journals CD4+ T Lymphocytes from Calves Immunized withAnaplasma marginale Major Surface Protein 1 (MSP1), a Heteromeric Complex of MSP1a and MSP1b, Preferentially Recognize the MSP1a Carboxyl Terminus That Is Conserved among Strains

2001 ◽  
Vol 69 (11) ◽  
pp. 6853-6862 ◽  
Author(s):  
Wendy C. Brown ◽  
Guy H. Palmer ◽  
Harris A. Lewin ◽  
Travis C. McGuire
Keyword(s):  
T Lymphocytes ◽  
T Lymphocyte ◽  
Protective Immunity ◽  
B Lymphocyte ◽  
Surface Protein ◽  
Specific Response ◽  
Major Surface Protein ◽  
Ifn Γ ◽  
Major Surface ◽  
Lymphocyte Responses

ABSTRACT Native major surface protein 1 (MSP1) of the ehrlichial pathogenAnaplasma marginale induces protective immunity in calves challenged with homologous and heterologous strains. MSP1 is a heteromeric complex of a single MSP1a protein covalently associated with MSP1b polypeptides, of which at least two (designated MSP1F1 and MSP1F3) in the Florida strain are expressed. Immunization with recombinant MSP1a and MSP1b alone or in combination fails to provide protection. The protective immunity in calves immunized with native MSP1 is associated with the development of opsonizing and neutralizing antibodies, but CD4+ T-lymphocyte responses have not been evaluated. CD4+ T lymphocytes participate in protective immunity to ehrlichial pathogens through production of gamma interferon (IFN-γ), which promotes switching to high-affinity immunoglobulin G (IgG) and activation of phagocytic cells to produce nitric oxide. Thus, an effective vaccine for A. marginaleand related organisms should contain both T- and B-lymphocyte epitopes that induce a strong memory response that can be recalled upon challenge with homologous and heterologous strains. This study was designed to determine the relative contributions of MSP1a and MSP1b proteins, which contain both variant and conserved amino acid sequences, in stimulating memory CD4+ T-lymphocyte responses in calves immunized with native MSP1. Peripheral blood mononuclear cells and CD4+ T-cell lines from MSP1-immunized calves proliferated vigorously in response to the immunizing strain (Florida) and heterologous strains of A. marginale. The conserved MSP1-specific response was preferentially directed to the carboxyl-terminal region of MSP1a, which stimulated high levels of IFN-γ production by CD4+ T cells. In contrast, there was either weak or no recognition of MSP1b proteins. Paradoxically, all calves developed high titers of IgG antibodies to both MSP1a and MSP1b polypeptides. These findings suggest that in calves immunized with MSP1 heteromeric complex, MSP1a-specific T lymphocytes may provide help to MSP1b-specific B lymphocytes. The data provide a basis for determining whether selected MSP1a CD4+ T-lymphocyte epitopes and selected MSP1a and MSP1b B-lymphocyte epitopes presented on the same molecule can stimulate a protective immune response.

scholarly journals Promiscuous T-cell epitopes of Plasmodium merozoite surface protein 9 (PvMSP9) induces IFN-γ and IL-4 responses in individuals naturally exposed to malaria in the Brazilian Amazon

Vaccine ◽  
2010 ◽  
Vol 28 (18) ◽  
pp. 3185-3191 ◽  
Author(s):  
J.C. Lima-Junior ◽  
D.M. Banic ◽  
T.M. Tran ◽  
V.S.E. Meyer ◽  
S.G. De-Simone ◽  
...  
Keyword(s):  
T Cell ◽  
Surface Protein ◽  
Brazilian Amazon ◽  
Merozoite Surface Protein ◽  
T Cell Epitopes ◽  
Ifn Γ

scholarly journals Interleukin-12 as an Adjuvant Promotes Immunoglobulin G and Type 1 Cytokine Recall Responses to Major Surface Protein 2 of the Ehrlichial Pathogen Anaplasma marginale

2000 ◽  
Vol 68 (1) ◽  
pp. 270-280 ◽  
Author(s):  
Wenbin Tuo ◽  
Guy H. Palmer ◽  
Travis C. McGuire ◽  
Daming Zhu ◽  
Wendy C. Brown
Keyword(s):  
Protective Immunity ◽  
Mononuclear Cells ◽  
Surface Protein ◽  
Anaplasma Marginale ◽  
Interleukin 12 ◽  
Major Surface Protein ◽  
Ifn Γ ◽  
Major Surface ◽  
Type 1 Cytokine

ABSTRACT Anaplasma marginale is a tick-transmitted pathogen of cattle closely related to the human ehrlichiae, Ehrlichia chaffeensis and the agent of human granulocytic ehrlichiosis (HGE). These pathogens have in common a structurally conserved outer membrane protein (OMP) designated the major surface protein 2 (MSP-2) in A. marginale and HGE and OMP-1 in E. chaffeensis. Protective immunity against ehrlichial pathogens is believed to require induction of gamma interferon (IFN-γ) and opsonizing immunoglobulin (Ig) subclasses directed against OMP epitopes that, in concert, activate macrophages for phagocytosis and killing. Because interleukin-12 (IL-12) acts as an adjuvant for protein immunization to induce IFN-γ and protective immunity against intracellular pathogens, we hypothesized that as an adjuvant with MSP-2, IL-12 would augment type 1 recall responses to A. marginale. IL-12 was coadsorbed with MSP-2 to alum and shown to significantly enhance IFN-γ production by lymph node cells (LNC) and LNC-derived CD4+ T-cell lines from immunized calves following recall stimulation with A. marginale. LNC proliferation and IL-2 production were also enhanced in IL-12-treated calves. Elevated recall proliferative responses by peripheral blood mononuclear cells were still evident 9 months after immunization. Serum IgG levels were consistently increased in IL-12 immunized calves, predominantly due to higher IgG1 responses. The results support the use of IL-12 coadsorbed with OMP of ehrlichial pathogens in alum to amplify both antibody and type-1 cytokine responses important for protective immunity.

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