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Vengesai A, Muleya V, Midzi H, Tinago TV, Chipako I, Manuwa M, Naicker T, Mduluza T. Diagnostic performances of Schistosoma haematobium and Schistosoma mansoni recombinant proteins, peptides and chimeric proteins antibody based tests. Systematic scoping review. PLoS One 2023; 18:e0282233. [PMID: 36862712 PMCID: PMC9980832 DOI: 10.1371/journal.pone.0282233] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/11/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Traditional diagnostic tests for schistosome infections are suboptimal, particularly when the parasite burden is low. In the present review we sought to identify recombinant proteins, peptides, and chimeric proteins with potential to be used as sensitive and specific diagnostic tools for schistosomiasis. METHODS The review was guided by PRISMA-ScR guidelines, Arksey and O'Malley's framework, and guidelines from the Joanna Briggs Institute. Five databases were searched: Cochrane library, PubMed, EMBASE, PsycInfo and CINAHL, alongside preprints. Identified literature were assessed by two reviewers for inclusion. A narrative summary was used to interpret the tabulated results. RESULTS Diagnostic performances were reported as specificities, sensitivities, and AUC. The AUC for S. haematobium recombinant antigens ranged from 0.65 to 0.98, and 0.69 to 0.96 for urine IgG ELISA. S. mansoni recombinant antigens had sensitivities ranging from 65.3% to 100% and specificities ranging from 57.4% to 100%. Except for 4 peptides which had poor diagnostic performances, most peptides had sensitivities ranging from 67.71% to 96.15% and specificities ranging from 69.23% to 100%. S. mansoni chimeric protein was reported to have a sensitivity of 86.8% and a specificity of 94.2%. CONCLUSION The tetraspanin CD63 antigen had the best diagnostic performance for S. haematobium. The tetraspanin CD63 antigen Serum IgG POC-ICTs had a sensitivity of 89% and a specificity of 100%. Peptide Smp_150390.1 (216-230) serum based IgG ELISA had the best diagnostic performance for S. mansoni with a sensitivity of 96.15% and a specificity of 100%. Peptides were reported to demonstrate good to excellent diagnostic performances. S. mansoni multi-peptide chimeric protein further improved the diagnostic accuracy of synthetic peptides. Together with the advantages associated with urine sampling technique, we recommend development of multi-peptide chimeric proteins urine based point of care tools.
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Affiliation(s)
- Arthur Vengesai
- Department of Biochemistry, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
- * E-mail:
| | - Victor Muleya
- Department of Biochemistry, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
| | - Herald Midzi
- Department of Biochemistry, University of Zimbabwe, Mt Pleasant, Harare, Zimbabwe
| | | | - Isaac Chipako
- Aravas Pharmaceuticals Pvt LTD, Prospect Industrial Area, Harare, Zimbabwe
| | - Marble Manuwa
- Department of Biochemistry, University of Zimbabwe, Mt Pleasant, Harare, Zimbabwe
| | - Thajasvarie Naicker
- Discipline of Optics and Imaging, Doris Duke Medical Research Institute, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Takafira Mduluza
- Department of Biochemistry, University of Zimbabwe, Mt Pleasant, Harare, Zimbabwe
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Tanaka M, Kildemoes AO, Chadeka EA, Cheruiyot BN, Sassa M, Moriyasu T, Nakamura R, Kikuchi M, Fujii Y, de Dood CJ, Corstjens PLAM, Kaneko S, Maruyama H, Njenga SM, de Vrueh R, Hokke CH, Hamano S. Potential of antibody test using Schistosoma mansoni recombinant serpin and RP26 to detect light-intensity infections in endemic areas. Parasitol Int 2021; 83:102346. [PMID: 33857597 DOI: 10.1016/j.parint.2021.102346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/31/2021] [Accepted: 04/08/2021] [Indexed: 11/24/2022]
Abstract
Schistosomiasis remains a worldwide public health problem, especially in sub-Saharan Africa. The World Health Organization targets the goal for its elimination as a public health problem in the 2030 Neglected Tropical Diseases (NTDs) Roadmap. Concerted action and agile responses to challenges will be necessary to achieve the targets. Better diagnostic tests can accelerate progress towards the elimination by monitoring disease trends and evaluating the effectiveness of interventions; however, current examinations such as Kato-Katz technique are of limited power to detect light-intensity infections. The point-of-care circulating cathodic antigen (POC-CCA) test shows a higher sensitivity compared to the reference standard, Kato-Katz technique, but it still lacks sufficient sensitivity with low infection intensity. In this study, we examined antibody reactions against recombinant protein antigens; Schistosoma mansoni serine protease-inhibitor (SmSerpin) and RP26, by enzyme-linked immunosorbent assay (ELISA) in plasma samples with light-intensity infection. The sensitivity using the cocktail antigen of recombinant SmSerpin and RP26 showed 83.7%. The sensitivity using S. mansoni soluble egg antigen (SmSEA) was 90.8%, but it showed poor specificity (29.7%), while the cocktail antigen presented improved specificity (61.4%). We conclude that antibody detection to the SmSerpin and RP26 protein antigens is effective to detect S. mansoni light-intensity infections. Our study indicates the potential of detecting antibody against recombinant protein antigens to monitor the transmission of schistosomiasis in low endemicity contexts.
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Affiliation(s)
- Mio Tanaka
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Anna O Kildemoes
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Evans Asena Chadeka
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
| | - Benard Ngetich Cheruiyot
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
| | - Miho Sassa
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Taeko Moriyasu
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya; Department of Eco-Epidemiology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Risa Nakamura
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Mihoko Kikuchi
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Department of Immunogenetics, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Yoshito Fujii
- Department of Medical Technology, Sanyo Women's College, Hatsukaichi, Japan
| | - Claudia J de Dood
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Paul L A M Corstjens
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Satoshi Kaneko
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya; Department of Eco-Epidemiology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Haruhiko Maruyama
- Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Sammy M Njenga
- Eastern and Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | | | - Cornelis H Hokke
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Shinjiro Hamano
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan; Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya.
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Silva-Moraes V, Shollenberger LM, Siqueira LMV, Castro-Borges W, Harn DA, Grenfell RFQE, Rabello ALT, Coelho PMZ. Diagnosis of Schistosoma mansoni infections: what are the choices in Brazilian low-endemic areas? Mem Inst Oswaldo Cruz 2019; 114:e180478. [PMID: 30942278 PMCID: PMC6440364 DOI: 10.1590/0074-02760180478] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/21/2019] [Indexed: 12/25/2022] Open
Abstract
The population of Brazil is currently characterised by many individuals harbouring low-intensity Schistosoma mansoni infections. The Kato-Katz technique is the diagnostic method recommended by the World Health Organization (WHO) to assess these infections, but this method is not sensitive enough in the context of low egg excretion. In this regard, potential alternatives are being employed to overcome the limits of the Kato-Katz technique. In the present review, we evaluated the performance of parasitological and immunological approaches adopted in Brazilian areas. Currently, the diagnostic choices involve a combination of strategies, including the utilisation of antibody methods to screen individuals and then subsequent confirmation of positive cases by intensive parasitological investigations.
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Affiliation(s)
- Vanessa Silva-Moraes
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Biologia do Schistosoma mansoni e sua interação com o hospedeiro, Belo Horizonte, MG, Brasil
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, United States of America
| | - Lisa M Shollenberger
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Biologia do Schistosoma mansoni e sua interação com o hospedeiro, Belo Horizonte, MG, Brasil
- Old Dominion University, Department of Biological Sciences, Norfolk, VA, United States of America
| | - Liliane Maria Vidal Siqueira
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Biologia do Schistosoma mansoni e sua interação com o hospedeiro, Belo Horizonte, MG, Brasil
| | - William Castro-Borges
- Universidade Federal de Ouro Preto, Laboratório de Enzimologia e Proteômica, Ouro Preto, MG, Brasil
| | - Donald A Harn
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, United States of America
| | - Rafaella Fortini Queiroz e Grenfell
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Biologia do Schistosoma mansoni e sua interação com o hospedeiro, Belo Horizonte, MG, Brasil
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, United States of America
| | - Ana Lucia Teles Rabello
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Pesquisas Clínicas e Políticas Públicas em Doenças Infecciosas e Parasitárias, Belo Horizonte, MG, Brasil
| | - Paulo Marcos Zech Coelho
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Biologia do Schistosoma mansoni e sua interação com o hospedeiro, Belo Horizonte, MG, Brasil
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Hinz R, Schwarz NG, Hahn A, Frickmann H. Serological approaches for the diagnosis of schistosomiasis - A review. Mol Cell Probes 2016; 31:2-21. [PMID: 27986555 DOI: 10.1016/j.mcp.2016.12.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 11/28/2016] [Accepted: 12/12/2016] [Indexed: 01/14/2023]
Abstract
Schistosomiasis is a common disease in endemic areas of Sub-Saharan Africa, South America and Asia. It is rare in Europe, mainly imported from endemic countries due to travelling or human migration. Available methods for the diagnosis of schistosomiasis comprise microscopic, molecular and serological approaches, with the latter detecting antigens or antibodies associated with Schistosoma spp. infection. The serological approach is a valuable screening tool in low-endemicity settings and for travel medicine, though the interpretation of any diagnostic results requires knowledge of test characteristics and a patient's history. Specific antibody detection by most currently used assays is only possible in a relatively late stage of infection and does not allow for the differentiation of acute from previous infections for therapeutic control or the discrimination between persisting infection and re-infection. Throughout the last decades, new target antigens have been identified, and assays with improved performance and suitability for use in the field have been developed. For numerous assays, large-scale studies are still required to reliably characterise assay characteristics alone and in association with other available methods for the diagnosis of schistosomiasis. Apart from S. mansoni, S. haematobium and S. japonicum, for which most available tests were developed, other species of Schistosoma that occur less frequently need to be taken into account. This narrative review describes and critically discusses the results of published studies on the evaluation of serological assays that detect antibodies against different Schistosoma species of humans. It provides insights into the diagnostic performance and an overview of available assays and their suitability for large-scale use or individual diagnosis, and thus sets the scene for serological diagnosis of schistosomiasis and the interpretation of results.
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Affiliation(s)
- Rebecca Hinz
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Germany; Department of Tropical Medicine at the Bernhard Nocht Institute, German Armed Forces Hospital Hamburg, Germany.
| | | | - Andreas Hahn
- Takeda Pharma Vertrieb GmbH & Co. KG, Berlin, Germany
| | - Hagen Frickmann
- Department of Tropical Medicine at the Bernhard Nocht Institute, German Armed Forces Hospital Hamburg, Germany; Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Germany
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Tanigawa C, Fujii Y, Miura M, Nzou SM, Mwangi AW, Nagi S, Hamano S, Njenga SM, Mbanefo EC, Hirayama K, Mwau M, Kaneko S. Species-Specific Serological Detection for Schistosomiasis by Serine Protease Inhibitor (SERPIN) in Multiplex Assay. PLoS Negl Trop Dis 2015; 9:e0004021. [PMID: 26291988 PMCID: PMC4546333 DOI: 10.1371/journal.pntd.0004021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 07/30/2015] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Both Schistosoma mansoni and Schistosoma haematobium cause schistosomiasis in sub-Saharan Africa. We assessed the diagnostic value of selected Schistosoma antigens for the development of a multiplex serological immunoassay for sero-epidemiological surveillance. METHODOLOGY/PRINCIPAL FINDINGS Diagnostic ability of recombinant antigens from S. mansoni and S. haematobium was assessed by Luminex multiplex immunoassay using plasma from school children in two areas of Kenya, endemic for different species of schistosomiasis. S. mansoni serine protease inhibitor (SERPIN) and Sm-RP26 showed significantly higher reactivity to patient plasma as compared to the control group. Sm-Filamin, Sm-GAPDH, Sm-GST, Sm-LAP1, Sm-LAP2, Sm-Sm31, Sm-Sm32 and Sm-Tropomyosin did not show difference in reactivity between S. mansoni infected and uninfected pupils. Sm-RP26 was cross-reactive to plasma from S. haematobium patients, whereas Sm-SERPIN was species-specific. Sh-SEPRIN was partially cross-reactive to S. mansoni infected patients. ROC analysis for Sm-RP26, Sm-SERPIN and Sh-SERPIN showed AUC values of 0.833, 0.888 and 0.947, respectively. Using Spearman's rank correlation coefficient analysis, we also found significant positive correlation between the number of excreted eggs and median fluorescence intensity (MFI) from the multiplex immunoassays for Sm-SERPIN (ρ = 0.430, p-value = 0.003) and Sh-SERPIN (ρ = 0.433, p-value = 0.006). CONCLUSIONS/SIGNIFICANCE Sm-SERPIN is a promising species-specific diagnostic antigen. Sh-SEPRIN was partially cross-reactive to S. mansoni infected patients. SERPINs showed correlation with the number of excreted eggs. These indicate prospects for inclusion of SERPINs in the multiplex serological immunoassay system.
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Affiliation(s)
- Chihiro Tanigawa
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Yoshito Fujii
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- * E-mail:
| | - Masashi Miura
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Samson Muuo Nzou
- Nagasaki University Institute of Tropical Medicine—Kenya Medical Research Institute Project, Nairobi, Kenya
- Centre for Infectious and Parasitic Diseases Control Research, Kenya Medical Research Institute, Busia, Kenya
| | | | - Sachiyo Nagi
- Department of Parasitology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Shinjiro Hamano
- Nagasaki University Institute of Tropical Medicine—Kenya Medical Research Institute Project, Nairobi, Kenya
- Department of Parasitology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Sammy M. Njenga
- Eastern & Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute, Nairobi, Kenya
| | | | - Kenji Hirayama
- Department of Immunogenetics, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Matilu Mwau
- Centre for Infectious and Parasitic Diseases Control Research, Kenya Medical Research Institute, Busia, Kenya
- Consortium for National Health Research (CNHR), Nairobi, Kenya
| | - Satoshi Kaneko
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Nagasaki University Institute of Tropical Medicine—Kenya Medical Research Institute Project, Nairobi, Kenya
- Graduate School of International Health Development, Nagasaki University, Nagasaki, Japan
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Rezende CM, Silva MR, Santos ÍG, Silva GA, Gomes DA, Goes AM. Immunization with rP22 induces protective immunity against Schistosoma mansoni: Effects on granuloma down-modulation and cytokine production. Immunol Lett 2011; 141:123-33. [DOI: 10.1016/j.imlet.2011.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 08/22/2011] [Accepted: 09/09/2011] [Indexed: 12/17/2022]
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Zhou XH, Wu JY, Huang XQ, Kunnon SP, Zhu XQ, Chen XG. Identification and characterization of Schistosoma japonicum Sjp40, a potential antigen candidate for the early diagnosis of schistosomiasis. Diagn Microbiol Infect Dis 2010; 67:337-45. [DOI: 10.1016/j.diagmicrobio.2010.03.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 03/06/2010] [Accepted: 03/12/2010] [Indexed: 11/25/2022]
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Mapping of the conserved antigenic domains shared between potato apyrase and parasite ATP diphosphohydrolases: potential application in human parasitic diseases. Parasitology 2008; 135:943-53. [DOI: 10.1017/s0031182008004538] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
SUMMARYEvolutionary and closer structural relationships are demonstrated by phylogenetic analysis, peptide prediction and molecular modelling betweenSolanum tuberosumapyrase,Schistosoma mansoniSmATPase 2 andLeishmania braziliensisNDPase. Specific protein domains are suggested to be potentially involved in the immune response, and also seem to be conserved during host and parasite co-evolution. Significant IgG antibody reactivity was observed in sera from patients with American cutaneous leishmaniasis (ACL) and schistosomiasis using potato apyrase as antigen in ELISA.S. mansoniadult worm or egg,L. braziliensispromastigote (Lb) andTrypanosoma cruziepimastigote (EPI) have ATP diphosphohydrolases, and antigenic preparations of them were evaluated. In ACL patients, IgG seropositivity was about 43% and 90% for Lb and potato apyrase, respectively, while IgM was lower (<19%) for both. In schistosomiasis patients IgM (>40%) or IgG (100%) seropositivity for both soluble egg (SEA) and adult worm (SWAP) antigens was higher than that found for potato apyrase (IgM=10%; IgG=39%). In Chagas disease, IgG seropositivity for EPI and potato apyrase was 97% and 17%, respectively, while the IgM was low (3%) for both antigens. The study of the conserved domains from both parasite proteins and potato apyrase could lead to the development of new drug targets or molecular markers.
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Protective effect and granuloma down-modulation promoted by RP44 antigen a fructose 1,6 bisphosphate aldolase of Schistosoma mansoni. Immunobiology 2008; 213:437-46. [DOI: 10.1016/j.imbio.2007.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2007] [Revised: 09/11/2007] [Accepted: 10/15/2007] [Indexed: 11/20/2022]
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Makarova E, Goes TS, Leite MF, Goes AM. Detection of IgG binding to Schistosoma mansoni recombinant protein RP26 is a sensitive and specific method for acute schistosomiasis diagnosis. Parasitol Int 2005; 54:69-74. [PMID: 15710554 DOI: 10.1016/j.parint.2004.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Accepted: 12/17/2004] [Indexed: 11/21/2022]
Abstract
We recently described the first recombinant Schistosoma mansoni protein RP26, which was capable of acute infection diagnosis. The aim of the present work was to further characterize the RP26 diagnostic properties in immunoblot and enzyme-linked immunosorbent (ELISA) assays. Testing sera from uninfected donors and sera from patients with acute or chronic Schistosoma infection by Western blot immunoassay revealed 100% specificity and 100% sensitivity for acute infection identification. Sera from uninfected, acute, and chronic schistosomiasis were also probed for IgG, IgG4, IgA, and IgM reactivity to RP26 plus soluble egg antigens (SEA) in ELISA. The mean IgG reactivity to RP26 by sera from acute schistosomiasis patients was significantly higher than the chronic ones. The IgG4, IgA, and IgM reactivities to RP26 were low and similar in both infected groups. The mean IgA and IgM reactivities to SEA were significantly higher in the group of acute compared to chronic group, whereas mean IgG4 reactivity was higher in chronic group. To estimate the specificity of Schistosoma infection diagnosis sera from patients infected with other different parasites were tested to detect IgG reactivity to RP26 and IgA and IgM reactivity to SEA. For IgA against SEA detection, 72% of sera were positive and 48% of sera were positive for IgM detection. Based on these results we can suggest that detection of sera IgG binding to RP26 is a sensitive and specific method for acute schistosomiasis diagnosis. Therefore, RP26 is a candidate for immunodiagnostic kit development.
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Affiliation(s)
- E Makarova
- Laboratory of Molecular Biology, Institute of Biochemistry, Russian Academy of Medical Sciences, Novosibirsk, Russia
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