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To kill a piroplasm: genetic technologies to advance drug discovery and target identification in Babesia. Int J Parasitol 2019; 49:153-163. [DOI: 10.1016/j.ijpara.2018.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/07/2018] [Accepted: 09/19/2018] [Indexed: 12/26/2022]
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Krause PJ. Human babesiosis. Int J Parasitol 2019; 49:165-174. [PMID: 30690090 DOI: 10.1016/j.ijpara.2018.11.007] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/31/2018] [Accepted: 11/13/2018] [Indexed: 10/27/2022]
Abstract
Babesiosis is a worldwide emerging tick-borne disease that is increasing in frequency and geographic range. It imposes a significant health burden, especially on those who are immunocompromised and those who acquire the infection through blood transfusion. Death from babesiosis occurs in up to 20 percent of these groups. Diagnosis is confirmed with identification of typical intraerythrocytic parasites on a thin blood smear or Babesia DNA using PCR. Treatment consists of atovaquone and azithromycin or clindamycin and quinine, and exchange transfusion in severe cases. Personal and communal protective measures can limit the burden of infection but it is important to recognize that none of these measures are likely to prevent the continued expansion of Babesia into non-endemic areas.
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Affiliation(s)
- Peter J Krause
- Yale School of Public Health and Yale School of Medicine, New Haven, CT, USA.
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Yi W, Bao W, Rodriguez M, Liu Y, Singh M, Ramlall V, Cursino-Santos JR, Zhong H, Elton CM, Wright GJ, Mendelson A, An X, Lobo CA, Yazdanbakhsh K. Robust adaptive immune response against Babesia microti infection marked by low parasitemia in a murine model of sickle cell disease. Blood Adv 2018; 2:3462-3478. [PMID: 30518538 PMCID: PMC6290097 DOI: 10.1182/bloodadvances.2018026468] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/08/2018] [Indexed: 01/05/2023] Open
Abstract
The intraerythrocytic parasite Babesia microti is the number 1 cause of transfusion-transmitted infection and can induce serious, often life-threatening complications in immunocompromised individuals including transfusion-dependent patients with sickle cell disease (SCD). Despite the existence of strong long-lasting immunological protection against a second infection in mouse models, little is known about the cell types or the kinetics of protective adaptive immunity mounted following Babesia infection, especially in infection-prone SCD that are thought to have an impaired immune system. Here, we show, using a mouse B microti infection model, that infected wild-type (WT) mice mount a very strong adaptive immune response, characterized by (1) coordinated induction of a robust germinal center (GC) reaction; (2) development of follicular helper T (TFH) cells that comprise ∼30% of splenic CD4+ T cells at peak expansion by 10 days postinfection; and (3) high levels of effector T-cell cytokines, including interleukin 21 and interferon γ, with an increase in the secretion of antigen (Ag)-specific antibodies (Abs). Strikingly, the Townes SCD mouse model had significantly lower levels of parasitemia. Despite a highly disorganized splenic architecture before infection, these mice elicited a surprisingly robust adaptive immune response (including comparable levels of GC B cells, TFH cells, and effector cytokines as control and sickle trait mice), but higher immunoglobulin G responses against 2 Babesia-specific proteins, which may contain potential immunogenic epitopes. Together, these studies establish the robust emergence of adaptive immunity to Babesia even in immunologically compromised SCD mice. Identification of potentially immunogenic epitopes has implications to identify long-term carriers, and aid Ag-specific vaccine development.
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Affiliation(s)
| | - Weili Bao
- Laboratory of Complement Biology and
| | - Marilis Rodriguez
- Laboratory of Blood-Borne Parasites, New York Blood Center, New York, NY
| | | | - Manpreet Singh
- Laboratory of Blood-Borne Parasites, New York Blood Center, New York, NY
| | | | | | - Hui Zhong
- Laboratory of Complement Biology and
| | - Catherine M Elton
- Cell Surface Signalling Laboratory, Wellcome Trust Sanger Institute, Cambridge, United Kingdom; and
| | - Gavin J Wright
- Cell Surface Signalling Laboratory, Wellcome Trust Sanger Institute, Cambridge, United Kingdom; and
| | | | - Xiuli An
- Laboratory of Membrane Biology, New York Blood Center, New York, NY
| | - Cheryl A Lobo
- Laboratory of Blood-Borne Parasites, New York Blood Center, New York, NY
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Thekkiniath J, Mootien S, Lawres L, Perrin BA, Gewirtz M, Krause PJ, Williams S, Doggett JS, Ledizet M, Ben Mamoun C. BmGPAC, an Antigen Capture Assay for Detection of Active Babesia microti Infection. J Clin Microbiol 2018; 56:e00067-18. [PMID: 30093394 PMCID: PMC6156295 DOI: 10.1128/jcm.00067-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 07/14/2018] [Indexed: 11/20/2022] Open
Abstract
Human babesiosis is an emerging zoonotic infectious disease caused by intraerythrocytic protozoan parasites of the genus Babesia Most cases of human babesiosis are caused by Babesia microti and often manifest in individuals over the age of 50 years or in patients with a compromised immune system. Patients who develop symptomatic B. microti infections usually experience months of asymptomatic infection after the acute infection has resolved. About one-fifth of B. microti-infected adults never develop symptoms. These asymptomatically infected individuals sometimes donate blood and thus can transmit B. microti through blood transfusion. Current assays for detection of active B. microti infections can be used to screen donor blood prior to transfusion, but they rely primarily on microscopy or PCR methods, which have sensitivity and technical limitations. Here we report the development of an antigen capture enzyme-linked immunosorbent assay (BmGPAC) based on a major secreted immunodominant antigen of B. microti (BmGPI12/BmSA1), and we provide evidence that this assay is superior for detection of active B. microti infections, compared to available microscopy methods and serological assays. The assay has been evaluated using supernatants of B. microti-infected erythrocytes cultured in vitro, sera from B. microti-infected laboratory mice, and sera from wild mice and human patients. Our data suggest that the BmGPAC assay is a reliable assay for detection of active B. microti infections and is superior to real-time PCR and antibody assays for diagnosis of acute B. microti infections, screening of the blood supply, and epidemiological surveys of humans and animal reservoir hosts.
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Affiliation(s)
- Jose Thekkiniath
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Sara Mootien
- L2 Diagnostics, LLC, New Haven, Connecticut, USA
| | - Lauren Lawres
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Benjamin A Perrin
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Meital Gewirtz
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Peter J Krause
- Yale School of Public Health, New Haven, Connecticut, USA
| | - Scott Williams
- Connecticut Agricultural Experiment Station, New Haven, Connecticut, USA
| | | | | | - Choukri Ben Mamoun
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
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Jaimes-Dueñez J, Triana-Chávez O, Holguín-Rocha A, Tobon-Castaño A, Mejía-Jaramillo AM. Molecular surveillance and phylogenetic traits of Babesia bigemina and Babesia bovis in cattle (Bos taurus) and water buffaloes (Bubalus bubalis) from Colombia. Parasit Vectors 2018; 11:510. [PMID: 30208941 PMCID: PMC6136160 DOI: 10.1186/s13071-018-3091-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/31/2018] [Indexed: 12/05/2022] Open
Abstract
Background Babesia bigemina and B. bovis are two economically important hemoparasites affecting both cattle and buffaloes involved in dairy and beef production. In Colombia, although some parasitological and serological studies suggest an endemicity of these pathogens in areas under 1000 m, little is known about its molecular prevalence in different host. The objective of this study was to estimate the prevalence and molecular traits of these parasites in cattle and buffaloes from two Colombian regions. Methods Between 2014 and 2016, a three-point longitudinal survey was designed in farms from Caribbean and Orinoquia regions to evaluate the molecular prevalence of B. bigemina and B. bovis using a nested PCR (n-PCR) targeting hypothetical protein (hyp) and rhoptry-associated protein (RAP-1) genes, respectively. A total of 1432 cattle, 152 buffalo and 1439 Rhipicephalus microplus samples were analyzed. Moreover, phylogenetic relationship of isolates was analyzed using the 18S rRNA gene. Results A molecular prevalence of 31.6% (24.2% for B. bigemina and 14.4% for B. bovis), 23.6% (6.5% for B. bigemina and 17.7% for B. bovis) and 4.3% (3.5% for B. bigemina and 1.0% for B. bovis) was observed in cattle, buffaloes and Rhipicephalus microplus, respectively. Higher values of infection were observed during the wet season and late wet season; nevertheless, other variables such as age, production type, sex, breed and babesiosis control were also significantly associated with infection. Prevalence analysis showed that B. bovis infection was higher in cattle that coexist with buffaloes, when compared to those which did not. For each species, phylogenetic analyses revealed a high genetic diversity of isolates without clusters related to the isolation source. Conclusions To our knowledge, this is the first longitudinal survey that evaluates through molecular methods, the infection of B. bigemina and B. bovis in two important livestock regions from Colombia. This study reveals that the prevalence of infection by Babesia spp., in cattle and buffaloes are modulated by seasonal variations, host factors and vector traits. Our results provide new insights on the epidemiological aspects of infection of Babesia spp., in cattle and buffaloes, which must be taken into consideration when babesiosis control programs are implemented in the study area. Electronic supplementary material The online version of this article (10.1186/s13071-018-3091-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Omar Triana-Chávez
- Grupo BCEI, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Andrés Holguín-Rocha
- Grupo Malaria, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Alberto Tobon-Castaño
- Grupo Malaria, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
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Cai YC, Wu F, Hu W, Chen J, Chen SH, Xu B, Lu Y, Ai L, Yang CL, Zhao S. Molecular characterization of Babesia microti seroreactive antigen 5-1-1 and development of rapid detection methods for anti-B. microti antibodies in serum. Acta Trop 2018; 185:371-379. [PMID: 29559329 DOI: 10.1016/j.actatropica.2018.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 01/17/2023]
Abstract
Babesiosis has become a new global threat impacting human health, and most human babesiosis cases are caused by Babesia microti. Until now few antigens of B. microti have been described which can be used for the diagnosis of human babesiosis. In the present study, we report on the bioinformatic analysis, cloning and expression of the sequence encoding the B. microti seroreactive antigen 5-1-1 to investigate its potential incorporation in serologic diagnostic tools for babesiosis. Bioinformatic analysis and recombinant gene expression were performed to molecularly characterize seroreactive antigen 5-1-1. Enhanced chemiluminescence (ECL)-Western blot methods were used to detect specific antibodies in infected mice. Immunofluorescence antibody assays (IFA) were performed to detect the localization of BmSA5-1-1 in B. microti parasites. ELISA and immunochromatographic (ICT) tests were developed using recombinant BmSA5-1-1 to evaluate its potential use in rapid detection methods for B. microti antibodies and for the diagnosis of babesiosis. A recombinant expression plasmid was constructed by inserting the target gene fragment in the pET28a vector after double digestion with BamHI and XhoI restriction enzymes. The recombinant BmSA5-1-1 protein was expressed in Escherichia coli (rBmSA5-1-1) and purified by means of Ni-nitrilotriacetic acid (NTA) agarose columns. Polyclonal antibodies were generated against rBmSA5-1-1. Based on indirect immunofluorescence assay results, BmSA5-1-1 appeared to localize on the surface of B. microti. ELISA tests using the rBmSA5-1-1 antigen detected specific antibodies from infected mice as early as 4 days post-infection. Our results indicate that the two methods we developed can detect specific antibodies in mice at different stages of infection with sensitivities of 100% (rBmSA5-1-1 ELISA) and 90% (ICT). The specificity of the two methods was 100%. Sera of patients suffering from other closely related parasitic diseases, such as malaria and toxoplasmosis, produced negative results. In conclusion, seroreactive antigen 5-1-1, a member of the BMN1 protein family, is expressed on the outer surface of B. microti and is a promising candidate antigen for the early diagnosis of babesiosis. rBmSA5-1-1 ELISA and ICT methods show good potential for detecting specific antibodies in mice at different stages of infection.
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Discovery of a novel species, Theileria haneyi n. sp., infective to equids, highlights exceptional genomic diversity within the genus Theileria: implications for apicomplexan parasite surveillance. Int J Parasitol 2018; 48:679-690. [DOI: 10.1016/j.ijpara.2018.03.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 03/12/2018] [Accepted: 03/22/2018] [Indexed: 01/29/2023]
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Xu B, Liu XF, Cai YC, Huang JL, Zhang RX, Chen JH, Cheng XJ, Zhou X, Xu XN, Zhou Y, Zhang T, Chen SB, Li J, Wu QF, Sun CS, Fu YF, Chen JX, Zhou XN, Hu W. Screening for biomarkers reflecting the progression of Babesia microti infection. Parasit Vectors 2018; 11:379. [PMID: 29970143 PMCID: PMC6029176 DOI: 10.1186/s13071-018-2951-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/13/2018] [Indexed: 01/29/2023] Open
Abstract
Background Babesiosis is caused by the invasion of erythrocytes by parasites of the Babesia spp. Babesia microti is one of the primary causative agents of human babesiosis. To better understand the status of the disease, discovering key biomarkers of the different infection stages is crucial. Results This study investigated B. microti infection in the mouse model from 0 to 270 days post-infection (dpi), using blood smears, PCR assays and ELISA. PCR assays showed a higher sensitivity when compared to microscopic examination. Specific IgG antibodies could be detected from 7 days to 270 dpi. Two-dimensional electrophoresis was combined with western blotting and mass spectrometric analysis to screen for specific reactive antigens during both the peak parasitaemia period (7 dpi) and IgG antibody response peak period (30 dpi) by the infected mice plasma. The 87 positive reactive proteins were identified and then expressed with the wheat germ cell-free system. Protein microarrays of all 87 targeted proteins were produced and hybridized with the serial plasma of infected mice model. Based on the antigen reaction profile during the infection procedure, 6 antigens were selected and expressed in Escherichia coli. Due to an early response to IgM, lower immunoreactivity levels of IgG after two months and higher immunoreactivity level IgG during nine months, four recombinant proteins were selected for further characterization, namely rBm2D97(CCF75281.1), rBm2D33(CCF74637.1), rBm2D41(CCF75408.1) and rBm7(CCF73510.1). The diagnostic efficacy of the four recombinant protein candidates was evaluated in a clinical setting using babesiosis patient plasma. The rBm2D33 showed the highest sensitivity with a positive rate of 62.5%. Additional characterization of the two candidate proteins using a mouse vaccination assay, demonstrated that rBm2D41 could reduce peak parasitaemia by 37.4%, indicating its efficacy in preventing severe babesiosis. Conclusions The detection technologies of microscopic examination, PCR assays and antibody tests showed different sensitivities and accuracy during the different stages of B. microti infection. Antibody detection has a unique significance for B. microti infection in the asymptomatic stages. Using immunoreactivity profiles, biomarkers for disease progression were identified and represent useful information for future the diagnosis and vaccine development for this serious disease of public health significance. Electronic supplementary material The online version of this article (10.1186/s13071-018-2951-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bin Xu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Xiu-Feng Liu
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Yu-Chun Cai
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Ji-Lei Huang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Rui-Xiang Zhang
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Jun-Hu Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Xun-Jia Cheng
- Institute of Biomedical Sciences, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Xia Zhou
- Department of Parasitology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Xue-Nian Xu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Yan Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Ting Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Shen-Bo Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Jian Li
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Qun-Feng Wu
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Cheng-Song Sun
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Yong-Feng Fu
- Institute of Biomedical Sciences, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Jia-Xu Chen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China
| | - Wei Hu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, National Health and Family Planning Commission, Shanghai, People's Republic of China. .,Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China.
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Ascencio ME, Florin-Christensen M, Mamoun CB, Weir W, Shiels B, Schnittger L. Cysteine Proteinase C1A Paralog Profiles Correspond with Phylogenetic Lineages of Pathogenic Piroplasmids. Vet Sci 2018; 5:E41. [PMID: 29673170 PMCID: PMC6024612 DOI: 10.3390/vetsci5020041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/06/2018] [Accepted: 04/11/2018] [Indexed: 12/31/2022] Open
Abstract
Piroplasmid parasites comprising of Babesia, Theileria, and Cytauxzoon are transmitted by ticks to farm and pet animals and have a significant impact on livestock industries and animal health in tropical and subtropical regions worldwide. In addition, diverse Babesia spp. infect humans as opportunistic hosts. Molecular phylogeny has demonstrated at least six piroplasmid lineages exemplified by B. microti, B. duncani, C. felis, T. equi, Theileria sensu stricto (T. annulata, T. parva, and T. orientalis) and Babesia sensu stricto (B. bovis, B. bigemina, and B. ovis). C1A cysteine-proteinases (C1A-Cp) are papain-like enzymes implicated in pathogenic and vital steps of the parasite life cycle such as nutrition and host cell egress. An expansion of C1A-Cp of T. annulata and T. parva with respect to B. bovis and B. ovis was previously described. In the present work, C1A-Cp paralogs were identified in available genomes of species pertaining to each piroplasmid lineage. Phylogenetic analysis revealed eight C1A-Cp groups. The profile of C1A-Cp paralogs across these groups corroborates and defines the existence of six piroplasmid lineages. C. felis, T. equi and Theileria s.s. each showed characteristic expansions into extensive families of C1A-Cp paralogs in two of the eight groups. Underlying gene duplications have occurred as independent unique evolutionary events that allow distinguishing these three piroplasmid lineages. We hypothesize that C1A-Cp paralog families may be associated with the advent of the schizont stage. Differences in the invertebrate tick host specificity and/or mode of transmission in piroplasmid lineages might also be associated with the observed C1A-Cp paralog profiles.
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Affiliation(s)
- Mariano E Ascencio
- Instituto de Patobiología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), INTA-Castelar, Los Reseros y Nicolas Repetto s/n, Hurlingham 1686, Argentina.
- National Council of Scientific and Technological Research (CONICET), Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina.
| | - Monica Florin-Christensen
- Instituto de Patobiología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), INTA-Castelar, Los Reseros y Nicolas Repetto s/n, Hurlingham 1686, Argentina.
- National Council of Scientific and Technological Research (CONICET), Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina.
| | - Choukri B Mamoun
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT 06520, USA.
| | - William Weir
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, 464 Bearsden Road, Glasgow G61 1QH, UK.
| | - Brian Shiels
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, 464 Bearsden Road, Glasgow G61 1QH, UK.
| | - Leonhard Schnittger
- Instituto de Patobiología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), INTA-Castelar, Los Reseros y Nicolas Repetto s/n, Hurlingham 1686, Argentina.
- National Council of Scientific and Technological Research (CONICET), Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina.
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Stahl P, Poinsignon Y, Pouedras P, Ciubotaru V, Berry L, Emu B, Krause PJ, Ben Mamoun C, Cornillot E. Case report of the patient source of the Babesia microti R1 reference strain and implications for travelers. J Travel Med 2018; 25:4696553. [PMID: 29394381 PMCID: PMC6927858 DOI: 10.1093/jtm/tax073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 10/14/2017] [Indexed: 11/13/2022]
Abstract
BACKGROUND In 2002, a previously healthy 69-year-old man travelled to France from the United States and presented to our hospital with a febrile illness that subsequently was determined to be babesiosis. The blood isolated from this patient served as a source for propagation of the Babesia microti R1 strain with subsequent sequencing and annotation of the parasite genome. METHODS Upon admission, we obtained a medical history, performed a physical examination, and examined his blood for the presence of a blood borne pathogen by microscopy, PCR and indirect immunofluorescence antibody testing. Once the diagnosis of babesiosis was made, we reviewed the literature to assess the distribution of B. microti-associated babesiosis cases in immunocompetent patients from outside the USA. RESULTS The patient recalled a tick bite during the previous month on Cape Cod, Massachusetts. The diagnosis was confirmed by identification of Babesia-infected red blood cells on blood smears, amplification of B. microti DNA in blood by PCR and the presence of B. microti antibody in the serum. This strain was the first isolate of B. microti to be fully sequenced and its annotated genome serves as a reference for molecular and cell biology studies aimed at understanding B. microti pathophysiology and developing diagnostic tests and therapies. A review of babesiosis cases demonstrates a worldwide distribution of B. microti and identifies potential emerging endemic areas where travelers may be at risk of contracting B. microti infection. CONCLUSION This case provides clinical information about the patient infected with the R1 isolate and a review of travel risk, diagnosis and treatment of babesiosis in endemic and non-endemic areas.
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Affiliation(s)
- Philipp Stahl
- Institute of Virology, Parasitology Unit, University of Marburg, Marburg, Germany.,Department of Internal Medicine, Section of Gastroenterology and Infectious Diseases, University Hospital Gießen and Marburg, Marburg, Germany
| | - Yves Poinsignon
- Internal Medicine Department, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Pascal Pouedras
- Microbiology Department, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Vasilica Ciubotaru
- Internal Medicine Department, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Laurence Berry
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, Université Montpellier, Montpellier, France
| | - Brinda Emu
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, USA
| | - Peter J Krause
- Yale School of Public Health and Yale School of Medicine, 60 College St., New Haven, CT 06520, USA
| | - Choukri Ben Mamoun
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, USA
| | - Emmanuel Cornillot
- Institut de Biologie Computationnelle (IBC), Montpellier, France.,Institut de Recherche en Cancérologie de Montpellier (IRCM - INSERM U1194), Institut régional du Cancer Montpellier (ICM) & Université de Montpellier, France
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Mousa AA, Roche DB, Terkawi MA, Kameyama K, Kamyingkird K, Vudriko P, Salama A, Cao S, Orabi S, Khalifa H, Ahmed M, Attia M, Elkirdasy A, Nishikawa Y, Xuan X, Cornillot E. Human babesiosis: Indication of a molecular mimicry between thrombospondin domains from a novel Babesia microti BmP53 protein and host platelets molecules. PLoS One 2017; 12:e0185372. [PMID: 29040286 PMCID: PMC5644982 DOI: 10.1371/journal.pone.0185372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 09/12/2017] [Indexed: 01/11/2023] Open
Abstract
Human babesiosis is caused by the apicomplexan parasite Babesia microti, which is of major public health concern in the United States and elsewhere, resulting in malaise and fatigue, followed by a fever and hemolytic anemia. In this paper we focus on the characterization of a novel B. microti thrombospondin domain (TSP1)-containing protein (BmP53) from the new annotation of the B. microti genome (locus 'BmR1_04g09041'). This novel protein (BmP53) had a single TSP1 and a transmembrane domain, with a short cytoplasmic tail containing a sub-terminal glutamine residue, but no signal peptide and Von Willebrand factor type A domains (VWA), which are found in classical thrombospondin-related adhesive proteins (TRAP). Co-localization assays of BmP53 and Babesia microti secreted antigen 1 (BmSA1) suggested that BmP53 might be a non-secretory membranous protein. Molecular mimicry between the TSP1 domain from BmP53 and host platelets molecules was indicated through different measures of sequence homology, phylogenetic analysis, 3D structure and shared epitopes. Indeed, hamster isolated platelets cross-reacted with mouse anti-BmP53-TSP1. Molecular mimicry are used to help parasites to escape immune defenses, resulting in immune evasion or autoimmunity. Furthermore, specific host reactivity was also detected against the TSP1-free part of BmP53 in infected hamster sera. In conclusion, the TSP1 domain mimicry might help in studying the mechanisms of parasite-induced thrombocytopenia, with the TSP1-free truncate of the protein representing a potential safe candidate for future vaccine studies.
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Affiliation(s)
- Ahmed Abdelmoniem Mousa
- Institut de Biologie Computationnelle (IBC), LIRMM, CNRS, Université de Montpellier, Montpellier, France
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Daniel Barry Roche
- Institut de Biologie Computationnelle (IBC), LIRMM, CNRS, Université de Montpellier, Montpellier, France
- Centre de Recherche en Biologie cellulaire de Montpellier, CNRS-UMR 5237, Montpellier, France
| | - Mohamad Alaa Terkawi
- Institut de Biologie Computationnelle (IBC), LIRMM, CNRS, Université de Montpellier, Montpellier, France
| | - Kyohko Kameyama
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Ketsarin Kamyingkird
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
- Department of Parasitology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Patrick Vudriko
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Akram Salama
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Shinuo Cao
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Sahar Orabi
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Hanem Khalifa
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Mohamed Ahmed
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Mabrouk Attia
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Ahmed Elkirdasy
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Yoshifumi Nishikawa
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Xuenan Xuan
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menoufia, Egypt
- * E-mail: (EC); (XX)
| | - Emmanuel Cornillot
- Institut de Biologie Computationnelle (IBC), LIRMM, CNRS, Université de Montpellier, Montpellier, France
- Institut de Recherche en Cancérologie de Montpellier (IRCM-INSERM U1194), Institut régional du Cancer Montpellier (ICM) and Université de Montpellier, Montpellier, France
- * E-mail: (EC); (XX)
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Babesia microti: from Mice to Ticks to an Increasing Number of Highly Susceptible Humans. J Clin Microbiol 2017; 55:2903-2912. [PMID: 28747374 DOI: 10.1128/jcm.00504-17] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Babesia microti, a zoonotic intraerythrocytic parasite, is the primary etiological agent of human babesiosis in the United States. Human infections range from subclinical illness to severe disease resulting in death, with symptoms being related to host immune status. Despite advances in our understanding and management of B. microti, the incidence of infection in the United States has increased. Therefore, research focused on eradicating disease and optimizing clinical management is essential. Here we review this remarkable organism, with emphasis on the clinical, diagnostic, and therapeutic aspects of human disease.
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63
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Mareedu N, Schotthoefer AM, Tompkins J, Hall MC, Fritsche TR, Frost HM. Risk Factors for Severe Infection, Hospitalization, and Prolonged Antimicrobial Therapy in Patients with Babesiosis. Am J Trop Med Hyg 2017; 97:1218-1225. [PMID: 28722598 DOI: 10.4269/ajtmh.17-0146] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Babesiosis is an emerging tick-borne disease transmitted by the hard tick Ixodes scapularis, which also transmits Lyme disease. Better gradation of prognostic indicators are needed to determine which patients may develop serious complications requiring hospitalization, and to provide early guidance on appropriate therapy. In this study, we evaluated 128 patients with smear or real time polymerase chain reaction-confirmed Babesia microti infections over a period of 16 years. Patients with asplenia or immunocompromising conditions were more likely to have severe infection (P < 0.01), require hospitalization (P < 0.01), or receive prolonged courses of antimicrobials (P < 0.01). Nausea or vomiting (P < 0.01) and diarrhea (P < 0.01) along with hyperbilirubinemia (P < 0.01) were predictive of severe infection, hospitalization, and prolonged antimicrobial therapy. Patients with concurrent Lyme disease were less likely to require hospitalization and had similar severity of disease and length of antibiotic treatment compared with those without Lyme disease.
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Affiliation(s)
| | | | | | | | - Thomas R Fritsche
- University of Wisconsin, La Crosse, Wisconsin.,Marshfield Clinic Health System, Marshfield, Wisconsin
| | - Holly M Frost
- Marshfield Clinic Health System, Minocqua, Wisconsin.,Marshfield Clinic Research Institute, Marshfield, Wisconsin
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Carpi G, Walter KS, Mamoun CB, Krause PJ, Kitchen A, Lepore TJ, Dwivedi A, Cornillot E, Caccone A, Diuk-Wasser MA. Babesia microti from humans and ticks hold a genomic signature of strong population structure in the United States. BMC Genomics 2016; 17:888. [PMID: 27821055 PMCID: PMC5100190 DOI: 10.1186/s12864-016-3225-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 10/27/2016] [Indexed: 11/16/2022] Open
Abstract
Background Babesia microti is an emerging tick-borne apicomplexan parasite with increasing geographic range and incidence in the United States. The rapid expansion of B. microti into its current distribution in the northeastern USA has been due to the range expansion of the tick vector, Ixodes scapularis, upon which the causative agent is dependent for transmission to humans. Results To reconstruct the history of B. microti in the continental USA and clarify the evolutionary origin of human strains, we used multiplexed hybrid capture of 25 B. microti isolates obtained from I. scapularis and human blood. Despite low genomic variation compared with other Apicomplexa, B. microti was strongly structured into three highly differentiated genetic clusters in the northeastern USA. Bayesian analyses of the apicoplast genomes suggest that the origin of the current diversity of B. microti in northeastern USA dates back 46 thousand years with a signature of recent population expansion in the last 1000 years. Human-derived samples belonged to two rarely intermixing clusters, raising the possibility of highly divergent infectious phenotypes in humans. Conclusions Our results validate the multiplexed hybrid capture strategy for characterizing genome-wide diversity and relatedness of B. microti from ticks and humans. We find strong population structure in B. microti samples from the Northeast indicating potential barriers to gene flow. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3225-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Giovanna Carpi
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 06520, USA.,Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, 06520, USA.,Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Katharine S Walter
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 06520, USA
| | - Choukri Ben Mamoun
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Peter J Krause
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 06520, USA.,Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Andrew Kitchen
- Department of Anthropology, University of Iowa, Iowa City, IA, 52242, USA
| | | | - Ankit Dwivedi
- Institut de Biologie Computationnelle, University de Montpellier, 34095, Montpellier, Cedex 5, France
| | - Emmanuel Cornillot
- Institut de Biologie Computationnelle, University de Montpellier, 34095, Montpellier, Cedex 5, France
| | - Adalgisa Caccone
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 06520, USA.,Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, 06520, USA
| | - Maria A Diuk-Wasser
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, 06520, USA. .,Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, NY, 10027, USA.
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