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Ahn CS, Kim JG, Huh S, Kang I, Kong Y. Advances in Serological Diagnosis of Taenia solium Neurocysticercosis in Korea. Genomics Inform 2019; 17:e7. [PMID: 30929408 PMCID: PMC6459165 DOI: 10.5808/gi.2019.17.1.e7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/07/2019] [Indexed: 12/04/2022] Open
Abstract
Cysticercosis, a parasitic disease caused by Taenia solium metacestode (TsM), has a major global public health impact in terms of disability-adjusted life years. The parasite preferentially infects subcutaneous tissue, but may invade the central nervous system, resulting in neurocysticercosis (NC). NC is an important neglected tropical disease and an emerging disease in industrialized countries due to immigration from endemic areas. The prevalence of taeniasis in Korea declined from 0.3%–12.7% during the 1970s to below 0.02% since the 2000s. A survey conducted from 1993 to 2006 revealed that the percentage of tested samples with high levels of specific anti-TsM antibody declined from 8.3% to 2.2%, suggesting the continuing occurrence of NC in Korea. Modern imaging modalities have substantially improved the diagnostic accuracy of NC, and recent advances in the molecular biochemical characterization of the TsM cyst fluid proteome also significantly strengthened NC serodiagnosis. Two glycoproteins of 150 and 120 kDa that induce strong antibody responses against sera from patients with active-stage NC have been elucidated. The 150 kDa protein showed hydrophobic-ligand binding activities and might be critically involved in the acquisition of host-derived lipid molecules. Fasciclin and endophilin B1, both of which play roles in the homeostatic functions of TsM, showed fairly high antibody responses against calcified NC cases. NC is now controllable and manageable. Further studies should focus on controlling late-onset intractable seizures and serological diagnosis of NC patients infected with few worms. This article briefly overviews diagnostic approaches and discusses current issues relating to NC serodiagnosis.
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Affiliation(s)
- Chun-Seob Ahn
- Department of Molecular Parasitology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Jeong-Geun Kim
- Department of Molecular Parasitology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
| | - Sun Huh
- Department of Parasitology and Institute of Medical Education, Hallym University College of Medicine, Chuncheon 24252, Korea
| | - Insug Kang
- Department of Biochemistry and Molecular Biology, Kyung Hee University College of Medicine, Seoul 02447, Korea
| | - Yoon Kong
- Department of Molecular Parasitology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
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Wu HW, Ito A, Ai L, Zhou XN, Acosta LP, Lee Willingham A. Cysticercosis/taeniasis endemicity in Southeast Asia: Current status and control measures. Acta Trop 2017; 165:121-132. [PMID: 26802488 DOI: 10.1016/j.actatropica.2016.01.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 11/02/2015] [Accepted: 01/10/2016] [Indexed: 12/26/2022]
Abstract
The parasitic zoonoses cysticercosis/taeniasis is among the 17 major Neglected Tropical Diseases (NTDs) identified by the WHO as a focus for research and control. It is caused by a larval stage (cysticercus) infection of Taenia solium tapeworm in both humans and pigs. Cysticercosis occurs in many resource-poor countries, especially those with warm and mild climates in the regions of Latin America (LA), Asia and Sub-Saharan Africa (SSA). The prevalence of human cysticercosis is marked in those areas where individuals are traditionally keen to consume raw or insufficiently cooked pork and/or where the husbandry of pigs is improper. The worldwide burden of cysticercosis is unclear and notably, large-scale control initiatives are lacking in all regions. This review focuses on the current endemic status of cysticercosis caused by T. solium infection in both humans and pigs living in 13 Southeast Asian countries. We will also emphasize epidemiological data as well as prevention and control of human neurocysticercosis.
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Affiliation(s)
- Hai-Wei Wu
- Center for International Health Research, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA; Department of Pediatrics, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA.
| | - Akira Ito
- Department of Parasitology and Neglected Tropical Diseases Research Laboratory, Asahikawa Medical University, Asahikawa, Japan
| | - Lin Ai
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Luz P Acosta
- Department of Immunology, Research Institute for Tropical Medicine, Alabang, Muntinlupa, Philippines
| | - Arve Lee Willingham
- One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, St. Kitts, West Indies
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Ferrer E, Sánchez J, Milano A, Alvarez S, La Rosa R, Lares M, González LM, Cortéz MM, Dávila I, Harrison LJS, Parkhouse RME, Gárate T. Diagnostic epitope variability within Taenia solium 8 kDa antigen family: implications for cysticercosis immunodetection. Exp Parasitol 2011; 130:78-85. [PMID: 22075212 DOI: 10.1016/j.exppara.2011.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 07/30/2011] [Accepted: 10/10/2011] [Indexed: 10/15/2022]
Abstract
To study diagnostic epitopes within the Taenia solium 8 kDa antigen family, six overlapping synthetic peptides from an 8 kDa family member (Ts8B2) were synthesized and evaluated by ELISA and MABA with sera from patients with neurocysticercosis (NCC), from infected pigs and from rabbits immunized with recombinant Ts8B2 protein. The pre-immune rabbit sera and the Ts8B2 recombinant protein served as negative and positive controls, respectively. A similar analysis was done with the already described antigenic peptides from another member of the 8 kDa family, highly similar to Ts8B2, the CyDA antigen. Surprisingly, neither the Ts8B2 peptides nor the CyDA peptides were recognized by infected human and porcine sera. However, the entire Ts8B2 recombinant, as well as amino and carboxy-terminal halves were recognized by the positive serum samples. The observed lack of recognition of linear Ts8B2 peptides suggests that the principal serological response to the Ts8B2 family is focused on conformational epitopes in contrast to the previously observed antigenicity of the CyDA peptides. This differential antigenicity of 8 kDa family peptides could be related with parasite antigenic variability. The fact that rabbits experimentally immunized with Ts8B2 did make anti-peptide antibodies to peptides Ts8B2-6 and CyDA-6, located in the carboxy-terminal region demonstrated that the Ts8B2 peptides are not intrinsically non-immunogenic.
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Affiliation(s)
- Elizabeth Ferrer
- Instituto de Investigaciones Biomédicas, Universidad de Carabobo Sede Aragua, Maracay, Venezuela
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Update on eosinophilic meningoencephalitis and its clinical relevance. Clin Microbiol Rev 2009; 22:322-48, Table of Contents. [PMID: 19366917 DOI: 10.1128/cmr.00044-08] [Citation(s) in RCA: 190] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Eosinophilic meningoencephalitis is caused by a variety of helminthic infections. These worm-specific infections are named after the causative worm genera, the most common being angiostrongyliasis, gnathostomiasis, toxocariasis, cysticercosis, schistosomiasis, baylisascariasis, and paragonimiasis. Worm parasites enter an organism through ingestion of contaminated water or an intermediate host and can eventually affect the central nervous system (CNS). These infections are potentially serious events leading to sequelae or death, and diagnosis depends on currently limited molecular methods. Identification of parasites in fluids and tissues is rarely possible, while images and clinical examinations do not lead to a definitive diagnosis. Treatment usually requires the concomitant administration of corticoids and anthelminthic drugs, yet new compounds and their extensive and detailed clinical evaluation are much needed. Eosinophilia in fluids may be detected in other infectious and noninfectious conditions, such as neoplastic disease, drug use, and prosthesis reactions. Thus, distinctive identification of eosinophils in fluids is a necessary component in the etiologic diagnosis of CNS infections.
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Bae YA, Jeong YT, Chung JY, Kim SH, Mahanta J, Feng Z, Chong CK, Kim TS, Kong Y. A recombinant chimeric antigen toward a standardized serodiagnosis of Taenia solium neurocysticercosis. Proteomics Clin Appl 2008; 2:1596-610. [PMID: 21136810 DOI: 10.1002/prca.200800084] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Indexed: 11/07/2022]
Abstract
Neurocysticercosis (NC) invokes formidable neurological problems worldwide. Previous proteomic analyses revealed most of the low-molecular-weight proteins might derive from two macromolecules of 120 kDa (consisting of 14-38 kDa subunits) and 150 kDa (7-15 kDa subunits) of Taenia solium metacestode (TsM) cyst fluid (CF). We characterized serological properties of these two proteins and established an immunopotent chimera. The 120 and 150 kDa proteins harbored 54-81 and 94-98% of the antibody-binding activity of the crude CF with minimal antigenic cross-reactivity to each other. The expression and immune recognition of the 150 kDa subunits were relatively constant, regardless of the different geographical origins of the CF collected, while those of the 120 kDa subunits varied by their origins (Asia vs. America). We cloned four representative proteins (one from the 120 kDa and three from the 150 kDa) that showed different epitope specificities, generated a chimera, and demonstrated that this regimen may bolster serodiagnostic reliability. Overall sensitivity and specificity, against sera from active-/mixed-stage NC and those from other infections, and healthy-controls, were determined to be 97.5% (156/160 samples) and 97.8% (265/271 cases). Patient sera from adult taeniases, sparganosis, and fascioliasis showed weak cross-reactions. Micro-ELISA showed similar results. This chimera may prove useful in the construction of standardized platform for NC serodiagnosis.
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Affiliation(s)
- Young-An Bae
- Department of Molecular Parasitology, Sungkyunkwan University School of Medicine and Center for Molecular Medicine, Samsung Biomedical Research Institute, Suwon, Korea
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Lee EG, Kim SH, Bae YA, Chung JY, Suh M, Na BK, Kim TS, Kang I, Ma L, Kong Y. A hydrophobic ligand-binding protein of the Taenia solium metacestode mediates uptake of the host lipid: implication for the maintenance of parasitic cellular homeostasis. Proteomics 2008; 7:4016-30. [PMID: 17960733 DOI: 10.1002/pmic.200700332] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Parasitic organisms are incapable of de novo fatty acid synthesis due to a down-regulated expression of enzymes involved in the oxygen-dependent pathway. We investigated the uptake of host lipids by a 150-kDa hydrophobic ligand-binding protein (HLBP) of Taenia solium metacestode, an agent causative of neurocysticercosis. The protein was found to be a hetero-oligomeric complex consisting of multiple subunits (M(r) 7, 10, and 15 kDa within pH 8.0-9.7), which may originate from four unique genes of 7- and 10-kDa gene families with 2-3 polymorphic alleles/paralogs. The 15-kDa protein represented glycosylated forms of the 10-kDa. With high binding affinity to lipid analogs, these subunits evidenced high-level sequence identity with other cestode HLBPs and form a novel clade associated with excretory-secretory type HLBP. In vitro experiments with viable worms suggested that the excreted 150-kDa protein might bind to lipids, and participate in the translocation of host lipids across the syncytial membrane. This process was substantially inhibited by the specific anti-150 kDa antibodies. The protein was localized in the parasite syncytium and in the lipid droplets within host granuloma wall, where significant lipase activity was expressed. HLBP-mediated uptake of the host lipid may be critical for the parasite survival and thus could be targeted by chemotherapeutics and/or vaccine.
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Affiliation(s)
- Eung-Goo Lee
- Department of Molecular Parasitology, Sungkyunkwan University School of Medicine, Suwon, Korea
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Sciutto E, Chavarria A, Fragoso G, Fleury A, Larralde C. The immune response in Taenia solium cysticercosis: protection and injury. Parasite Immunol 2008; 29:621-36. [PMID: 18042169 DOI: 10.1111/j.1365-3024.2007.00967.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This article reviews current knowledge on the innate and acquired immune responses in human Taenia solium neurocysticercosis, highlighting the conditions that appear to be favourable for the survival or destruction of the parasite and for the benefit or injury to its host.
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Affiliation(s)
- E Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, UNAM, México DF, Mexico.
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Oliveira HB, Machado GA, Cabral DD, Costa-Cruz JM. Application of Taenia saginata metacestodes as an alternative antigen for the serological diagnosis of human neurocysticercosis. Parasitol Res 2007; 101:1007-13. [PMID: 17510761 DOI: 10.1007/s00436-007-0578-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 05/03/2007] [Indexed: 11/08/2022]
Abstract
Serological tests are an important tool for the diagnosis of neurocysticercosis (NCC), the disease caused by Taenia solium metacestodes. The aim of the present research was to test the application of Taenia saginata metacestodes as an alternative antigen for use in the immunofluorescence antibody test (IFAT), enzyme-linked immunosorbent assay (ELISA), and Western blotting (WB) tests compared with the metacestodes antigen of T. solium in serum samples. The samples were obtained from 130 individuals: 20 from patients with definitive NCC, Group 1; 18 from individuals infected by Taenia sp., Group 2; 40 from individuals infected by various parasites, Group 3; and 40 from healthy individuals, Group 4. The sensitivity of IFAT, ELISA, and WB using antigen obtained from T. solium applied to the patients of Group 1 yielded results of 85, 95, and 95%, respectively, for the three tests. When the tests were conducted using T. saginata metacestodes, results were 75, 80, and 85%, respectively. The specificity of IFAT, ELISA, and WB using antigen obtained from T. solium yielded results of 94.9, 88.8, and 93.9%. When the tests were conducted using T. saginata metacestodes, results were 95.9, 88.8, and 93.6%, respectively. No statistical differences for sensitivity or specificity among the antigens were found. In conclusion, the results indicated that T. saginata metacestodes can be used as an alternative antigen for NCC diagnosis.
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Affiliation(s)
- Heliana B Oliveira
- Laboratório de Parasitologia, Departamento de Imunologia, Microbiologia e Parasitologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Avenida Pará 1720, CEP 38400-902 Uberlândia, Minas Gerais, Brazil
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Barcelos ISDC, Ferreira MS, Moura LPD, Biondi GF, Costa-Cruz JM. Use of the paired samples (cerebrospinal fluid and serum) in immunodiagnostic of active and inactive human neurocysticercosis. Mem Inst Oswaldo Cruz 2005; 100:427-9. [PMID: 16113892 DOI: 10.1590/s0074-02762005000400014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Paired samples of cerebrospinal fluid (CSF) and serum of 30 patients--10 with active, 10 with inactive neurocysticercosis (NCC), and 10 control subjects--were evaluated by enzyme-linked immunosorbent assay (ELISA) using two Taenia crassiceps metacestode extracts as antigen in order to detect IgG antibodies. In active NCC, high levels of IgG were detected (p < 0.05). The CSF samples showed 80% (CI 72-88) of reactivity in the saline extract (S) and 90% (CI 84-95) in sodium dodecyl sulphate (SDS) and the serum samples were reactive in 90% (CI 84-95) and 100% (CI 98-100) in the S and SDS antigenic extracts, respectively. The use of the paired samples of CSF and serum in active NCC showed equivalent results suggesting that the serum samples could be used as a screening in those patients whose CSF puncture is counter-indicated.
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Chung JY, Kho WG, Hwang SY, Je EY, Chung YT, Kim TS, Eom KS, Sohn WM, Cho SY, Kong Y. Molecular determination of the origin of acephalic cysticercus. Parasitology 2004; 130:239-46. [PMID: 15727073 DOI: 10.1017/s0031182004006262] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Acephalic cysticercus (Ac), a rarely developed multilobulated and nonencysted form of larvalTaenia, causes hydrocephalus or adhesive arachnoiditis in the ventricles and subarachnoidal space that often lead to fatal outcome in affected patients. Ac has been proposed to originate fromT. soliumon the basis of morphological features, while no molecular data supporting the presumption have been available. In the present study, we investigated the immunological properties as well as molecular characteristics of Ac that was obtained surgically from 6 patients. Immunoblotting of the cyst fluid from Ac samples demonstrated the constitutive expression of aT. soliummetacestode (TsM) 10 kDa protein. Specific antibodies against the truncated 10 kDa protein, which appears to be species specific for TsM cysticercosis, were detected in both serum and cerebrospinal fluid samples of Ac patients. Nucleotide sequences of mitochondrial cytochromecoxidase subunit I (COI) and NADH dehydrogenase subunit 1 (ND1) genes of Ac were almost identical to those ofT. soliumbut differed substantially from those of the otherTaeniaspecies. In phylogenetic analysis, Ac clustered withT. soliumin a well-supported clade. Our results strongly suggest that Ac may have originated fromT. solium.
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Affiliation(s)
- J Y Chung
- Department of Parasitology, College of Medicine, Inje University, Busan 614-735, Korea
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Yang HJ. Immunoblot findings of calcareous corpuscles binding proteins in cyst fluid of Taenia solium metacestodes. THE KOREAN JOURNAL OF PARASITOLOGY 2004; 42:141-3. [PMID: 15381863 PMCID: PMC2717365 DOI: 10.3347/kjp.2004.42.3.141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
After collecting calcareous corpuscles from plerocercoid of Spirometra mansoni (sparganum), we evaluated the antigenic values of calcareous corpuscles binding proteins obtained from the cyst fluid of Taenia solium metacestodes. Immunoblot analysis revealed that cysticercosis patient sera strongly recognized 10 and 95 kDa calcareous corpuscles binding proteins. This result demonstrated that calcareous corpuscles are bound with major secretory antigenic proteins, which is possibly involved in the secretory pathways of the 10 and 95 kDa proteins presenting in the cyst fluid of T. solium metacestodes.
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Affiliation(s)
- Hyun-Jong Yang
- Department of Parasitology, College of Medicine, Ewha Womans University, Seoul 158-710, Repubic of Korea.
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Yang HJ, Chung YB. Immunolocalization of the 150 kDa protein in cyst fluid of Taenia solium metacestodes. THE KOREAN JOURNAL OF PARASITOLOGY 2004; 42:81-4. [PMID: 15181349 PMCID: PMC2717347 DOI: 10.3347/kjp.2004.42.2.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
The 150 kDa protein of cyst fluid (CF) of Taenia solium metacestodes was purified by ammonium sulfate fractionation and Superose 6 HR gel filtration chromatography. The purified protein consisted of three subunits (15, 10 and 7 kDa proteins), which were analyzed with the use of a 7.5-15% gradient sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Immunofluorescence study was carried out by using immunize specific polyclonal antibody. Positive reactions were noticed at bladder walls, calcareous corpuscles, granules of cyst fluid and some host tissue surrounding the bladder wall of the metacestodes. These results suggest that the 150 kDa protein was secreted into host tissues, inducing immune responses in the host, and it may play important roles in the cellular physiology of the parasites.
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Affiliation(s)
- Hyun Jong Yang
- Department of Parasitology, College of Medicine, Ewha Womans University, Seoul 158-710, Korea
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Ito A, Wandra T, Yamasaki H, Nakao M, Sako Y, Nakaya K, Margono SS, Suroso T, Gauci C, Lightowlers MW. Cysticercosis/Taeniasis in Asia and the Pacific. Vector Borne Zoonotic Dis 2004; 4:95-107. [PMID: 15228810 DOI: 10.1089/1530366041210756] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Three taeniid tapeworms infect humans in Asia and the Pacific: Taenia solim, Taenia saginata, and Taenia asiatica. Although there is continuing debate about the definition of a new species, phylogenetic analyses of these parasites have provided multiple lines of evidence that T. asiatica is an independent species and the sister species of T. saginata. Here we review briefly the morphology, pathology, molecular biology, distribution and control options of taeniasis/cysticercosis in Asia and the Pacific and comment on the potential role which dogs may play in the transmission of T. solium. Special attention is focused on Indonesia: taeniasis caused by T. asiatica in North Sumatra, taeniasis/cysticercosis of T. solium and taeniasis of T. saginata in Bali, and taeniasis/cysticercosis of T. solium in Papua (formerly Irian Jaya). Issues relating to the spread of taeniasis/cysticercosis caused by T. solium in Papua New Guinea are highlighted, since serological evidence suggests that cysticercosis occurs among the local residents. The use of modern techniques for detection of taeniasis in humans and cysticercosis in humans, pigs and dogs, with the possible adoption of new control measures will provide a better understanding of the epidemiology of taeniasis/cysticercosis in Asia and the Pacific and lead to improved control of zoonotic and simultaneously meat-borne disease transmission.
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Affiliation(s)
- Akira Ito
- Department of Parasitology, Asahikawa Medical College, Japan.
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Ito A, Craig PS. Response to Dorny et al.: Immunodiagnostic approaches for detecting Taenia solium. Trends Parasitol 2004. [DOI: 10.1016/j.pt.2004.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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